Consolidate primitive generators

[bentoogood]

currently 'Plane' is available from Scene->Source->Primitive->Plane and generates a scene graph.

'Sphere' is available from Cortex->Primitive->Sphere and generates an object that requires promotion to a scene entity.

consolidate the approach to primitive generation in some sensible way.

[bentoogood]

We need some primitives for the example scripts in the docs.

This would also provide a useful entry point for developing nodes.

So move up to next week.

Agreement is to add extra primitives alongside the plane we have currently and remove the cortex primitive ops from the gaffer install.

Primitives to add:

• sphere
• cube
• cone

[andrewkaufman]

Is the sphere meant to be a Cortex SpherePrimitive (single point with radius and theta) or a Mesh with controls for horizontal/vertical divisions?

[bentoogood]

B

[johnhaddon]

For now I think just a SpherePrimitive will do - that's what the node you're replacing did (the Cortex level one). Later I think it'd be nice for a "type" plug to specify whether it's a sphere-sphere, a mesh-sphere, a geodesic-sphere or a nurbs-sphere...