if (hullEdgesSet.add(e)) {
}
}
for (int j = 0; j < vertices.length; j++) {
HullVertex v = vertices[j];
Vector4 worldPos = Vector4.createPoint3D(v.x(), v.y(), v.z());
Vector4 screenPos = prj.project(worldPos);
PointData p = new PointData(worldPos, screenPos, v);
if (isVisible) {
visibleVerticesSet.add(p);