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IMeshManipulator::transform can now also normalize normals

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Also only update normals now using inner 3x3 matrix (same result usually as last column is 0,0,0 but faster)
And adding some comments.

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6419 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
cutealien
2022-08-26 14:09:04 +00:00
parent 662001566b
commit eafbe063be
3 changed files with 54 additions and 10 deletions
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26
include/SVertexManipulator.h
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@ -277,6 +277,32 @@ namespace scene
core::matrix4 Transformation;
};
//! Vertex manipulator which transforms the normal of the vertex with the rotate/scale part of the given matrix (inner 3x3)
class SVertexNormalRotateScaleManipulator : public IVertexManipulator
{
public:
SVertexNormalRotateScaleManipulator(const core::matrix4& m) : Transformation(m) {}
template <typename VType>
void operator()(VType& vertex) const
{
Transformation.rotateVect(vertex.Normal);
}
private:
core::matrix4 Transformation;
};
//! Vertex manipulator which normalizes the normal of the vertex
class SVertexNormalizeNormalManipulator : public IVertexManipulator
{
public:
SVertexNormalizeNormalManipulator() {}
template <typename VType>
void operator()(VType& vertex) const
{
vertex.Normal.normalize();
}
};
//! Vertex manipulator which scales the TCoords of the vertex
class SVertexTCoordsScaleManipulator : public IVertexManipulator
{