Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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There are a couple of things.
All the paths are drawn clockwise. If you run Union on each ring before executing Difference you will get a different result. Not necessrilt better!
If however you break apart the each ring and reverse the direction of one component path from each pair, and then combine, before running Difference you will I think get the result you are looking for.
-u
---- On Sun, 24 Apr 2016 14:19:27 +0000 Brynn <brynn@...3089...> wrote ----
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Thanks U. I will try it!
All best, brynn ______________________________ From: ugajin Sent: Sunday, April 24, 2016 9:09 AM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
There are a couple of things.
All the paths are drawn clockwise. If you run Union on each ring before executing Difference you will get a different result. Not necessrilt better!
If however you break apart the each ring and reverse the direction of one component path from each pair, and then combine, before running Difference you will I think get the result you are looking for.
-u
---- On Sun, 24 Apr 2016 14:19:27 +0000 Brynn <brynn@...3089...> wrote ----
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
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Thanks C R.
Unfortunately, simply erasing the overlap, or deleting the rings behind won't fix it for me. Also, the problem isn't just the overlap that I've shown. There is also some distortion of the curves that I didn't show. Or at least there seems to be....
I'm trying to make 2 linked rings. So that after I Difference them, I need to go back and close one of the gaps. So to make sure I maintain the proper curve, I was using a duplicate of the original ring behind it. Then after I close the paths, I can adjust the handles, with the ring behind to match the curves. That's how I noticed that something was "off".
But if it's just a positioning error, maybe I just need to make sure they just have the same x and y position?
Ok, I will report it. Is it ok if I quote from your reply? That will give a hint for whoever might be interested, since I don't have the technical understanding to give any hints.
After I make the report, I'll reply to this thread again, with a link to it.
Thanks again, brynn __________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z____________________... Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again!
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again!
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
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Thanks, that is interesting. I don't know if that's the source of the problem I've seen, or not. But it sounds like it could be.
All best :-)
___________________ From: ugajin Sent: Friday, May 13, 2016 5:02 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: [Inkscape-user] Difference difference
I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again! brynn
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
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Perhaps you can provide an example?
-u
---- On Sat, 14 May 2016 03:46:23 +0000 Brynn <brynn@...3089...> wrote ----
Thanks, that is interesting. I don't know if that's the source of the problem I've seen, or not. But it sounds like it could be.
All best :-)
___________________ From: ugajin Sent: Friday, May 13, 2016 5:02 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: [Inkscape-user] Difference difference
I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again! brynn
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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Hi, I appreciate your interest. But now we're talking about a different problem than what I originally posted. And it's not something that I need a solution for, currently. However, if you have some special interest, see Comments #28 through #33 of this bug report: https://bugs.launchpad.net/inkscape/+bug/521988
All best, brynn ____________________ From: ugajin Sent: Thursday, May 26, 2016 9:22 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: Re: [Inkscape-user] Difference difference
Perhaps you can provide an example?
-u
---- On Sat, 14 May 2016 03:46:23 +0000 Brynn <brynn@...3089...> wrote ----
Thanks, that is interesting. I don't know if that's the source of the problem I've seen, or not. But it sounds like it could be.
All best :-)
___________________ From: ugajin Sent: Friday, May 13, 2016 5:02 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: [Inkscape-user] Difference difference
I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again! brynn
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
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I was referring to your comment about snap, and rounding errors.
-u
---- On Sat, 28 May 2016 10:38:02 +0000 Brynn <brynn@...3089...> wrote ----
Hi, I appreciate your interest. But now we're talking about a different problem than what I originally posted. And it's not something that I need a solution for, currently. However, if you have some special interest, see Comments #28 through #33 of this bug report: https://bugs.launchpad.net/inkscape/+bug/521988
All best, brynn ____________________ From: ugajin Sent: Thursday, May 26, 2016 9:22 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: Re: [Inkscape-user] Difference difference
Perhaps you can provide an example?
-u
---- On Sat, 14 May 2016 03:46:23 +0000 Brynn <brynn@...3089...> wrote ----
Thanks, that is interesting. I don't know if that's the source of the problem I've seen, or not. But it sounds like it could be.
All best :-)
___________________ From: ugajin Sent: Friday, May 13, 2016 5:02 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: [Inkscape-user] Difference difference
I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again! brynn
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z
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Yes, I used snapping in that file, to connect the pattern "units" together. I always thought that snapping was entirely precise. But apparently, those nodes do not precisely overlap each other (and that's why the extension doesn't work). The nodes are 0.00001 or 0.00002 or 0.00003 or 0.00004 px distance apart.
So it was in my questions about that extension, that I learned that snapping isn't perfectly precise. I've seen discussion about "rounding errors" in the mailing list, so I thought maybe it was rounding errors that cause the node placements to be off by those miniscule distance. But I don't really know.
brynn
_______________________ From: ugajin Sent: Sunday, May 29, 2016 5:39 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: Re: Re: [Inkscape-user] Difference difference
I was referring to your comment about snap, and rounding errors.
-u
---- On Sat, 28 May 2016 10:38:02 +0000 Brynn <brynn@...3089...> wrote ----
Hi, I appreciate your interest. But now we're talking about a different problem than what I originally posted. And it's not something that I need a solution for, currently. However, if you have some special interest, see Comments #28 through #33 of this bug report: https://bugs.launchpad.net/inkscape/+bug/521988
All best, brynn ____________________ From: ugajin Sent: Thursday, May 26, 2016 9:22 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: Re: [Inkscape-user] Difference difference
Perhaps you can provide an example?
-u
---- On Sat, 14 May 2016 03:46:23 +0000 Brynn <brynn@...3089...> wrote ----
Thanks, that is interesting. I don't know if that's the source of the problem I've seen, or not. But it sounds like it could be.
All best :-)
___________________ From: ugajin Sent: Friday, May 13, 2016 5:02 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: Re: [Inkscape-user] Difference difference
I am not certain that I understand your last comment, but perhaps the following may be of interest: https://docs.python.org/2/faq/design.html?highlight=self#why-are-floating-po... https://docs.python.org/2/tutorial/floatingpoint.html#tut-fp-issues
-u
---- On Sat, 07 May 2016 21:41:20 +0000 Brynn <brynn@...3089...> wrote ----
Interesting! Yes, there are several situations where you can make Inkscape perform a little better by adding extra nodes ;-)
Well, in this case, I didn't need absolute precision. I would have liked it. But that was good enough for this project. (I just use Inkscape as a hobby.)
This is another subject, but I recently learned that snapping is somewhat less than precise. Apparently snapping can be off by 0.00001 to 0.0001. Maybe it's what I've seen referred to as "rounding errors", I'm not sure.
Anyway, thanks again! brynn
___________________ From: ugajin Sent: Saturday, May 07, 2016 4:29 AM To: Brynn Cc: Inkscape User Community Subject: Re: Re: [Inkscape-user] Difference difference
I am surprised, you were satisfied with the work around. The 'answer' turns out to be one those things that seem obvious after the fact. If you double the number of node you get a better result! Stricly speaking you only need to double the node count for the intersecting segments. Also, it may or may not not surprise you, but you need to add nodes to both objects.
See grab, as proof of concept.
-u
---- On Sat, 07 May 2016 04:07:19 +0000 Brynn <brynn@...3089...> wrote ----
Hi u, No, I don't need a solution for the Difference problem. I already made it work using your first idea. But, I'm always interested to learn new things! What did you find?
brynn _________________________ From: ugajin Sent: Wednesday, May 04, 2016 4:53 PM To: Inkscape User Community Cc: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Finally found an answer to this. Do you still need a solution?
-u
---- On Sun, 24 Apr 2016 20:33:31 +0000 ugajin <ugajin@...3218...> wrote ----
I hadn't noticed the small remaining overlap as it was hidden by the stacking order.
-u
---- On Sun, 24 Apr 2016 17:58:39 +0000 Brynn<brynn@...3089...> wrote ----
Hi C R, I just realized something. I use a custom default doc with landscape orientation. Could this be related to the transform attribute issues? I was one second away from posting the bug report when I thought of it. Do you think it should still be posted, given the new info about custom default doc? Or would that explain it?
Btw, ugajin is right about reversing the subpaths. It improves the situation, resulting in less overlap. But there's still a tiny bit of overlap.
(And C R, in my previous message about positioning, I think I probably misunderstood you. Both rings still sit at the same x and y coordinates as before the Difference. So nevermind about that comment :-))
Thanks, brynn _____________________________ From: C R Sent: Sunday, April 24, 2016 9:27 AM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Heh, interesting! I'm getting a new and different offset error in inkscape trunk. It does not appear to be a problem with the difference boolean op, (fortunately) but rather the position of the result is off by a little.
I'm not sure what causes this, but I suspect it's a roundoff error to do with the precision. To fix, simply erase the shapes directly behind your result, or use snapping to snap the
It is a bug though. Whether it's one that can be easily fixed, I have no idea. :)
I say file a bug report for it.
My 2p. -C
On Sun, Apr 24, 2016 at 3:19 PM, Brynn <brynn@...3089...> wrote:
Thanks C R.
That was the first thing I thought too, at first. The bottom object must have a stroke. But as I said, they are both filled with no stroke.
Here's link to SVG file: http://inkscapecommunity.com/jd/imgs/diff-diff.svg . It has the rings already duplicated. So to reproduce, select the top green and top gold rings, and do Difference.
Thanks again :-) brynn
___________________________________ From: C R Sent: Saturday, April 23, 2016 12:05 PM To: Inkscape User Community Subject: Re: [Inkscape-user] Difference difference
Could not duplicate the error, however if you have a stroke applied to your shapes that is the same colour as your fill, that may explain what we are seeing here. :)
Boolean shape ops are done to fills only, and do not take into account line thickness on the resulting paths (this is intentional).
-C
On Sat, Apr 23, 2016 at 6:21 PM, Brynn <brynn@...3089...> wrote:
Hi Friends, It seems like I should know the answer to this. But I don't recall hearing about it. Starting with these 2 rings, which have fill and no stroke: http://inkscapecommunity.com/jd/ss/diff1.png I duplicate both, and then Difference. At 100% zoom they look ok. But zoom in (in this case, all the way, for best view) and you can see that the Difference wasn't correct. http://inkscapecommunity.com/jd/ss/diff2.png It's not a huge amount, but I would expect there shouldn't be any difference at all. This on Windows 7, 64-bit, sp1, Inkscape 0.91, 32-bit, exe installer. Is that a bug? Or is there some reason it's expected not to be precise?
Thanks for your help :-) brynn
------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! https://ad.doubleclick.net/ddm/clk/302982198;130105516;z _______________________________________________ Inkscape-user mailing list Inkscape-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/inkscape-user
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participants (3)
-
Brynn -
C R -
ugajin