Mad thought - clones and paths
Hi, Here's a situation: You have an original path, say a seagull. You make a clone for someplace else. But, you need that clone to *act* more like an actual path than a clone. Say you want it to punch-out (subtract) from some other path. Now you could use the original seagull path, but that can be dangerous because it's your master drawing. To punch out some other path, you would have to *move* the 'master' to the precise position and then make a copy and fiddle with z-order and then do the subtraction op. And, say you are doing this many times - adjusting as you go.
Now, if I could make a "path clone" and use it like a tool, that would solve the problem. I alter the master, the path-clone changes. I re-punch the other path. Loop until satisfied.
There are other situations I have found where I wish a clone could be a path and still be a clone, I just can't recall them.
Would there be some way to drive this by Python? I could point a path at a clone (or the master) and say 'take this shape' (i.e. an update of the path to match the source). It would be great if the two could remain linked and auto-update as the source changes shape.
\d
Hi,
Note: Speculation follows...
Situations like this should be handled well by SVG's Vector Effects once we implement them. It will allow faux subtraction and union with objects. Given that you can apply different Filter Effects to clones, it would make sense that the Vector Effects will work in the same way (though I do not see any specific mention in the proposed spec). No, there is no current ETA to implementing them yet. :)
Cheers, Josh
On Fri, Apr 15, 2011 at 12:57 AM, donn <donn.ingle@...155...> wrote:
Hi, Here's a situation: You have an original path, say a seagull. You make a clone for someplace else. But, you need that clone to *act* more like an actual path than a clone. Say you want it to punch-out (subtract) from some other path. Now you could use the original seagull path, but that can be dangerous because it's your master drawing. To punch out some other path, you would have to *move* the 'master' to the precise position and then make a copy and fiddle with z-order and then do the subtraction op. And, say you are doing this many times - adjusting as you go.
Now, if I could make a "path clone" and use it like a tool, that would solve the problem. I alter the master, the path-clone changes. I re-punch the other path. Loop until satisfied.
There are other situations I have found where I wish a clone could be a path and still be a clone, I just can't recall them.
Would there be some way to drive this by Python? I could point a path at a clone (or the master) and say 'take this shape' (i.e. an update of the path to match the source). It would be great if the two could remain linked and auto-update as the source changes shape.
\d
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On 15-4-2011 9:57, donn wrote:
Hi, Here's a situation: You have an original path, say a seagull. You make a clone for someplace else. But, you need that clone to *act* more like an actual path than a clone. Say you want it to punch-out (subtract) from some other path. Now you could use the original seagull path, but that can be dangerous because it's your master drawing. To punch out some other path, you would have to *move* the 'master' to the precise position and then make a copy and fiddle with z-order and then do the subtraction op. And, say you are doing this many times - adjusting as you go.
Now, if I could make a "path clone" and use it like a tool, that would solve the problem. I alter the master, the path-clone changes. I re-punch the other path. Loop until satisfied.
There are other situations I have found where I wish a clone could be a path and still be a clone, I just can't recall them.
Would there be some way to drive this by Python? I could point a path at a clone (or the master) and say 'take this shape' (i.e. an update of the path to match the source). It would be great if the two could remain linked and auto-update as the source changes shape.
I understand only half of what you are writing. But perhaps this will help you: a more "path-like" clone can be obtained by drawing a straight horizontal line, applying Pattern along path LPE, then as pattern path *link* it to your master path (select master path, ctrl+c, select 'path-like-clone' and click 'link to path'. You then a somewhat of a clone. But you can set the fill and stroke regardless of the masterpath's fill and stroke (unlike a normal clone).
Ciao, Johan
On Fri, Apr 15, 2011 at 11:28 AM, Johan Engelen <jbc.engelen@...2829...>wrote:
On 15-4-2011 9:57, donn wrote:
Hi, Here's a situation: You have an original path, say a seagull. You make a clone for someplace else. But, you need that clone to *act* more like an actual path than a clone. Say you want it to punch-out (subtract) from some other path. Now you could use the original seagull path, but that can be dangerous because it's your master drawing. To punch out some other path, you would have to *move* the 'master' to the precise position and then make a copy and fiddle with z-order and then do the subtraction op. And, say you are doing this many times - adjusting as you go.
Now, if I could make a "path clone" and use it like a tool, that would solve the problem. I alter the master, the path-clone changes. I re-punch the other path. Loop until satisfied.
There are other situations I have found where I wish a clone could be a path and still be a clone, I just can't recall them.
Would there be some way to drive this by Python? I could point a path at a clone (or the master) and say 'take this shape' (i.e. an update of the path to match the source). It would be great if the two could remain linked and auto-update as the source changes shape.
I understand only half of what you are writing. But perhaps this will help you: a more "path-like" clone can be obtained by drawing a straight horizontal line, applying Pattern along path LPE, then as pattern path *link* it to your master path (select master path, ctrl+c, select 'path-like-clone' and click 'link to path'. You then a somewhat of a clone. But you can set the fill and stroke regardless of the masterpath's fill and stroke (unlike a normal clone).
Ciao, Johan
Johan,
http://dev.w3.org/SVG/modules/vectoreffects/master/SVGVectorEffectsPrimer.ht...
I believe the veIntersect element would do what he wants to achieve. Basically, it's a more useful type of clipping in some circumstances. If the image they showed wanted a better demo, they would have used a stroke on the larger object, because the inner "hole" that gets created would be stroked too.
I will email you off-list with a screenshot.
Cheers, Josh
On 15/04/2011 22:04, Josh Andler wrote:
http://dev.w3.org/SVG/modules/vectoreffects/master/SVGVectorEffectsPrimer.ht... I believe the veIntersect element would do ..
This makes your earlier post clear. Thanks. It's nice to see SVG getting more sophisticated.
\d
On 15/04/2011 20:28, Johan Engelen wrote:
I understand only half of what you are writing.
Ha. That makes two of us :)
But perhaps this will help you: a more "path-like" clone can be obtained by drawing a straight horizontal line, applying Pattern along path LPE, then as pattern path*link* it to your master path (select master path, ctrl+c, select 'path-like-clone' and click 'link to path'. You then a somewhat of a clone. But you can set the fill and stroke regardless of the masterpath's fill and stroke (unlike a normal clone).
Dude! The magnificence of this is beyond words. Good one. Thanks.
\d
. But you can set the fill and stroke regardless of
the masterpath's fill and stroke (unlike a normal clone).
Dude! The magnificence of this is beyond words. Good one. Thanks.
\d
If the original's fill and stroke are UNSET then you can change the clone stroke and fill without all the extra steps and LFE stuff mentioned.
-Rob A>
participants (4)
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donn -
Johan Engelen -
Josh Andler -
Rob Antonishen