cap arbitrary shapes

[Martin Schan]

I have been fiddling around with generating procedural caps for the past two days. The Polycap and Divide SOP work well for a simple cap of one outline. But i want to cap more complex shapes from several illustrator curves. So basically I have a bigger outline and several inner curves within that outline.

 

The only solution I came up with for now is to polyknit the pieces on one end, to generate a large connected geometry, hand-pick the loop and finally polycap it with that loop group. But that is all useless when I wan't to be flexible with the resolution of the curves.

 

So I'm looking for a more procedural way for this problem. I'm grateful for any ideas.

 

I made up an example with simplified setup.

caps_for_arbitrary_shapes.hipnc

[konstantin magnus]

if its 2-dimensional shapes you can use the geometry node in cop context and the trace node back on geo level (see attachment).

caps_for_arbitrary_shapes_cop.hipnc

Edited July 24, 2015 by konstantin magnus

[acey195]

or poly cap your larger shapes and then use a "hole" sop

note that the hole sop is a 2d node and requires the inner shape to be more or less on the larger primitive

[konstantin magnus]

good one! does not handle overlappings well though..

 

how do you join overlapping curves procedurally? curvesect forces you to choose between odd- and even-numbered pieces : (

caps_for_arbitrary_02.hipnc

caps_for_arbitrary_curvesect.hipnc

Edited July 24, 2015 by konstantin magnus

[acey195]

You could try something like a 2dtriangulate node, some geometry cleaning and a divide node with remove unshared edges enabled.

 

Or you could write your own curvesect node...