rename MSAAPass -> ManualMSAARenderPass.  Remove 32 sample pattern (leads to rounding errors), simplify the shader.

sort MSAA samples from closest to center to furthest, to use backbuffer precision for those closest.  Random order may also work.

* When an object child is a THREE.Line parse and output to obj file.

* Handles separate cases of type Line and type LineSegment.

* When an object child is a THREE.Line parse and output to obj file.

* Handles separate cases of type Line and type LineSegment

remove nbVertex; it is not needed