Well, what about using a ready made 3d font... :) ;) ?

-----Original Message----- From: inkscape-user-bounces@lists.sourceforge.net [mailto:inkscape-user-bounces@lists.sourceforge.net] On Behalf Of ryan lerch Sent: 5. juli 2007 02:38 To: Inkscape User Community Subject: Re: [Inkscape-user] 3d type effect.

im not too sure what you are aiming for, but the extrude effect may be what you are after....

see this link: http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Effects-GenerateFromPath.ht ml#Effects-Extrude

cheers,

ryanlerch

On 7/5/07, John R. Culleton <john@...1668...> wrote:

It is well known how to create drop shadow effects in various tools including inkscape. What I am asking about is a true 3d effect, such as you see in the opening credits of movies in the 1930's and 1940's. I can see how one can do it manually, with two representations of each

character overlapping and lines drawn by hand between corresponding vertices. But is there a less tedious way?

-- John Culleton

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ryan lerch wrote:

im not too sure what you are aiming for, but the extrude effect may be what you are after....

see this link: http://tavmjong.free.fr/INKSCAPE/MANUAL/html/Effects-GenerateFromPath.html#E...

The extrusion produces a 3d-like effect but the lines are parallel not converging. What I'd like to see is some way of distorting shapes so that the lines converge towards a vanishing point, i.e. give a true 3d.

For example, suppose I have some text ("hello", for example) and I want it to appear as if suspended vertically in the air, with a perspective shadow cast onto the ground from it. The shadow needs to be distorted so that its verticals (which are "horizontal" on the ground because of the projection) are converging towards a point on the imaginary horizon.

Any ideas? Rick

Perhaps a useful addition would be new control lines on paths. What I envisage is that it would be possible to attach two lines (e.g. vertically) at either side of a shape. One end of each line would touch the shape and the other would point upwards. When I grab the control handle (using the node tool perhaps) at the top end of one of the control lines, all the nodes in the path would move horizontally in proportion to their distance from the moving line. This would allow the shape to be distorted. So simply by distorting towards an imagined vanishing point, it would be possible to get quite convincing 3d warping of any shape.

Being slightly more specific, the two control lines would form a pair, one of which is the invariant and the other the control line. The lines would initially be parallel and could point in any direction the user chooses (probably by moving the 'invariant' line). When the control line is moved, the all the points on the path move along normals to the invariant line. The distance they move is a linear function of their distance between the control line and the invariant line.

It would be necessary to be able to extend or shorten the control lines - they'd probably both extend or shorten together. However, this would be for practical reasons and wouldn't itself actually alter the shape in question.

To retain the ability to make further edits of the shape, it may be necessary to store the positions of the control lines in the document model (using Inkscape extensions because I don't think this could be represented in SVG). Obviously the SVG would show the distortion via the position of the shape's nodes.

I'd really like someone to implement this in Inkscape, although I'm afraid I'm not able to offer to do so myself.

Rick