[Algorithms] LightWave Texture reference object mapping algorithm

[Davide P. <da...@pr...>]

Hi !

I'm trying to mapping the UV coordinates of a mesh with both surface panel
texturing
parameters and texture reference object.

All the stuff works fine, but the source code is somenthing like this :
(Example for a planar mapping)

---WithOut RefObject :

vertex -= texture center;

vertex.x = axis / texture center * .5
vertex.y = axis / texture center * .5

(ok... I don't remember exactly the code :-))) )

--- With RefObj

vertex -= (texture center + refObj.translate);
vertex.rotate(refObj.rotation);

vertex.x = axis / texture center*refObj.scaling * .5;
vertex.y = axis / texture center*refObj.scaling * .5;

(Hmmmmmm...Ok... I don't remember exactly the code :-))) ) (Again....)
:-))))

Well... I world like to know is there is a matrix version of the stuff
above.

Somenthing like this : MappedVertex = VertexCoordinates * MatrixOfMapping;

Davide Pirola

www.prograph.it
www.protonic.net