Finish camera constructors, start ray class
set viewDirecton for camera
basic camera, ray done, stubbed out shape
return ray from computeRay, bug fixes in perspectiveCamera computeray
progress on xml parser
working on ray intersection and xmp parsing
make cameras for scene class, scene replaces scene_container_creator
simple test shader
computeRay method takes reference to ray, because memory usage.
finish implementing constructor, dest.
use HitInfo to store intersection information
Use an epsilon value in place of 0.0
add shaders to shapes
finish xml parsing for shapes, cameras
support new scene class
more debugging, add run script
SPHERE INTERSECTIONS WORKING!!!!!!!
Merge branch 'dev'