This removes a lot of code and will make it easier to migrate into a new
library with Java bindings, etc.
- The clipping planes and projection matrix were unused, removed them.
- In split view mode, our demos were using only 2 of the 3 manipulators,
removed one.
- Instead of callbacks and update methods, users can simply ask for the
current matrix at every frame.
- The manipulator's job is to consume mouse events and maintain an
"look at" basis, there is no need to store a reference to a Filament
Camera.
These two functions expect a vector of the same size as the
matrix's storage vectors (float4 for a mat4f for instance) which
has two major issues:
- The vector must end with 1 for homogeneous coordinates to work
- Passing a single scalar (mat4f::scale(0.5)) creates a matrix
whose diagonal is set to that scalar, thus breaking homogeneous
coordinates
With this change scale and translate expect a vector who dimensionality
is 1 less that of the matrix's underlying storage vectors. i.e. a float3
for mat4f.
