implemented toArray()

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>
implemented axis2d

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>
refactored two clip(***) functions

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>
added Vec3D class

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>
added Axis3D class

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>
added barebones of AABB

Signed-off-by: Marcel Schwittlick <marzzzel@gmail.com>