PShape, .obj-file, Vertex transformation

skagla

Hey, when I load an .obj - file as a PShape; is there any way to manipulate the vertices manually? PShape.getVertexCount() returns 0.

codeanticode

This is probably because an obj model typically consists of child shapes contained inside a root shape. Calling getVertexCount() on the root shape will give you 0 because it doesn't hold any vertices, you should access the child shapes by doing:

PShape obj = loadShape("model.obj");
for (int i = 0; i < obj.getChildCount(); i++) {
  PShape child = obj.getChild(i);
  println(child.getVertexCount());
}

PShape also has a getChildren() method that returns all the child shapes in an array. Also, a child shape could also be a group containing further children.

skagla

thank you for the quick replay, I'll test it.