How to color triangles in mesh (toxiclibs)

sergiobd

Hi, I am trying to color a mesh taken from a Kinect using toxiclibs. I cant find the way for coloring each triangle independently. Using fill before adding each face doesnt work, and i have not fount the way for adding a color to a face.

Here is part of my code:

int[]   depthMap = context.userMap();
  PVector p00;
  PVector p01;
  PVector p10;
  PVector p11;

  mesh = new TriangleMesh();
  for (int i = 0 ; i < wk - stepX  ; i += stepX ) { 
    for (int j = 0 ; j < hk - stepY ; j += stepY ) {

      int index00 = j*wk + i;
      int index01 = j*wk + i + stepX;
      int index10 = (j + stepY)*wk + i;
      int index11 = (j + stepY)*wk + i + stepX;

      if (depthMap[index00] > 0) {
        p00 = context.depthMapRealWorld()[index00];
        p01 = context.depthMapRealWorld()[index01]; 
        p10 = context.depthMapRealWorld()[index10];
        p11 = context.depthMapRealWorld()[index11];

        p00.mult( scaleFactor ); // probably a bad a idea
        p01.mult( scaleFactor );
        p10.mult( scaleFactor );
        p11.mult( scaleFactor );


        if (p00.z > 0 && p01.z > 0 && p10.z > 0 && p11.z > 0) {
          if (abs(p00.z - p01.z) < meshThreshold && abs(p00.z - p10.z) < meshThreshold) {

            fill( 255*noise( noiseScaleX * p00.x));//, noiseScaleY * p00.y ) ); // DOESNT WORK
            //fill(random(255)); // DOESNT WORK EITHER

            mesh.addFace(  toxiVec(p10) , toxiVec(p01), toxiVec(p00) ); 
            mesh.addFace( toxiVec(p11), toxiVec(p10), toxiVec(p01) );
          }
        }
      }
     }
    }
gfx.mesh(mesh);

amnon

TriangleMesh does not support colored faces. You have to either extend the class or store this information externally and then draw each face individually with it's connected color.

sergiobd

Thanks Amnon! Maybe another library may support it? Perhaps GLGraphics?

amnon

Hemesh has recently added native color support for meshes.