scene-graph

How do i indicate differences in this situation?

I am building code for a 2D scene graph and i have a single abstract class, Node that will be used to indicate that a type of item can be used in a scene graph. However, classes that implement from this are of different types such as leaf nodes and transformation nodes. How would i indicate these differences? would i use attributes, othe...

How do I define and standardize units in my 3D app?

I'm starting to design my object graph for an OpenGL ES 1.1 app on Android. What's advisable when it comes to actually drawing my triangles and controlling their size? Should I store all the vertices in units relative to each other and then multiply them by a value I pass during a draw(GL10 gl)? Would this approach have any impact whe...