Method tessellate

core/src/processing/opengl/PShapeOpenGL.java:3586–3616

()

  protected void tessellate() {
    if (root == this && parent == null) { // Root shape
      boolean initAttr = false;
      if (polyAttribs == null) {
        polyAttribs = PGraphicsOpenGL.newAttributeMap();
        initAttr = true;
      }

      if (tessGeo == null) {
        tessGeo = PGraphicsOpenGL.newTessGeometry(pg, polyAttribs, PGraphicsOpenGL.RETAINED,
                                                  PGL.bufferStreamingRetained);
      }
      tessGeo.clear();

      if (initAttr) {
        collectPolyAttribs();
      }

      for (int i = 0; i < polyAttribs.size(); i++) {
        VertexAttribute attrib = polyAttribs.get(i);
        tessGeo.initAttrib(attrib);
      }

      tessellateImpl();

      // Tessellated arrays are trimmed since they are expanded
      // by doubling their old size, which might lead to arrays
      // larger than the vertex counts.
      tessGeo.trim();
    }
  }


  protected void collectPolyAttribs() {