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How to animate a "solid" curve ?
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How to animate a "solid" curve ? // Archive: Tech Forum
Post by Emmanuel // Oct 20, 2007, 4:42am
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Emmanuel
Total Posts: 439
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I need to animate a curved plane (I mean with no thickness).
In a Flash-like program, we just draw a closed and filled curve, add a keyframe, move to an other frame, modify the handles of the curve, record the keyframe... and play.
In trueSpace, a curved shape is not rendered until you give it a thickness (extrude curve) and cap it. So, the problem is that you can animate the curve, but the cap stays at its first location...
Does anyone know the trick to animate a plain curve with its control points (handles) ? |
Post by jamesmc // Oct 20, 2007, 5:28am
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jamesmc
Total Posts: 2566
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One important ways of animating is missing in trueSpace, is morphing shapes, which includes lines/splines/etc.
One could probably do this in the LE if they are handy with scripts, but I am not. :) |
Post by Cthulhu // Oct 20, 2007, 5:49am
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Cthulhu
Total Posts: 48
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After creating the curve, use NURBS Extrude, then use the Cap tool to add a NURBS face. The new NURBS face will be a separate object glued to the extruded object. Just use the cursor keys to select the extruded object and delete, leaving the final NURBS face.
9023 |
Post by Emmanuel // Oct 20, 2007, 6:22am
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Emmanuel
Total Posts: 439
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After creating the curve, use NURBS Extrude, then use the Cap tool to add a NURBS face. The new NURBS face will be a separate object glued to the extruded object. Just use the cursor keys to select the extruded object and delete, leaving the final NURBS face.
Good idea Cthulhu ! Thank you.
It is a very elegant solution.
The square frame is somehow problematic though as it put limits to the curve animation. Too bad we cannot set a larger size for it. In the Cap Options panel, it is set as Cap Patch Extent value, and 1 is the max value.
If Simon reads this : note that Dribble renders all that frame. Not the curve only. |
Post by SiW // Oct 20, 2007, 8:57am
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SiW
Total Posts: 298
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Thanks for the heads-up, I'll look at this.
Yeah, it's a trim curve issue - in that dribble doesn't handle them at all. I'm going to look at it, but not until after 1.02 |
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