Hi.

I'm having problems with triangulation (or tessellation, or whatever it's called) while working in OpenGL or P3D. I get incompletely filled shapes. No problems when switching back to 2D. I'm working with contour coordinates coming off-the-fly from OpenCV, so I can't solve the problem at the source.

I've already read through these bug reports:

#97 (http://dev.processing.org/bugs/show_bug.cgi?id=97)

#111 (http://dev.processing.org/bugs/show_bug.cgi?id=111)

#547 (http://dev.processing.org/bugs/show_bug.cgi?id=547)

While all of these cover this problem, none of their solutions work. Setting z=0 doesn't seem to work, nor does slightly offsetting the z-coordinates, etc. There was also the following thread discussing the same topic:

http://processing.org/discourse/yabb_beta/YaBB.cgi?board=SoftwareBugs;action=display;num=1114158993

Here's the smallest shape I could record to shows the problem. Note how the background peeks through if you're in OpenGL, but doesn't if you're not.

Code:

import processing.opengl.*;

float[] points = { 
  277.5, 247.91666, 277.5, 249.99998, 272.5, 254.16666, 265.0, 254.16666, 272.5, 254.16666, 275.0, 252.08333, 280.0, 252.08333, 285.0, 256.25, 280.0, 260.41666, 275.0, 260.41666, 272.5, 262.5, 267.5, 262.5, 265.0, 264.5833, 262.5, 264.5833, 262.5, 266.66666, 260.0, 268.75, 257.5, 268.75, 262.5, 268.75, 265.0, 270.8333, 260.0, 275.0, 257.5, 275.0, 252.5, 270.8333, 250.0, 270.8333, 252.5, 272.91666, 250.0, 275.0, 250.0, 287.5, 252.5, 289.5833, 250.0, 291.66666, 252.5, 293.75, 252.5, 295.8333, 255.0, 297.91666, 255.0, 302.0833, 257.5, 302.0833, 260.0, 304.16666, 260.0, 310.41666, 262.5, 312.5, 262.5, 318.75, 262.5, 316.66666, 267.5, 312.5, 267.5, 308.3333, 275.0, 302.0833, 277.5, 304.16666, 280.0, 304.16666, 282.5, 302.0833, 282.5, 291.66666, 280.0, 289.5833, 280.0, 277.0833, 282.5, 275.0, 282.5, 270.8333, 285.0, 268.75, 285.0, 266.66666, 287.5, 264.5833, 282.5, 260.41666, 282.5, 258.3333, 285.0, 256.25, 287.5, 256.25, 290.0, 254.16666, 292.5, 254.16666, 295.0, 252.08333, 292.5, 249.99998, 290.0, 249.99998, 287.5, 252.08333, 285.0, 252.08333, 282.5, 249.99998, 280.0, 252.08333, 277.5, 249.99998};

//size(600,600);
size(600,400,OPENGL);

beginShape(POLYGON);
for(int i=0; i<points.length; i+=2) {
  vertex(points[i], points[i+1]);
}
endShape();