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From A. Botorabi, "slightly modified osgUtil's TangentSpaceGenerator class to allow the

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option for using or not using geom's indices for tangent space vectors
generation. now, Ruben's code is also used (it was disabled before). in
order to keep backward compatibility, the compute method behaves as before
in default case."
This commit is contained in:
Robert Osfield
2005-09-28 13:53:54 +00:00
parent 9e5eed280d
commit 52dea86a3e
2 changed files with 513 additions and 456 deletions
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71
include/osgUtil/TangentSpaceGenerator
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@@ -40,7 +40,7 @@ public:
TangentSpaceGenerator();
TangentSpaceGenerator(const TangentSpaceGenerator &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY);
void generate(osg::Geometry *geo, int normal_map_tex_unit = 0);
void generate(osg::Geometry *geo, int normal_map_tex_unit = 0, bool use_indices = false);
inline osg::Vec4Array *getTangentArray() { return T_.get(); }
inline const osg::Vec4Array *getTangentArray() const { return T_.get(); }
@@ -55,18 +55,71 @@ public:
inline void setBinormalArray(osg::Vec4Array *array) { B_ = array; }
inline osg::IndexArray *getIndices() { return indices_.get(); }
protected:
virtual ~TangentSpaceGenerator() {}
TangentSpaceGenerator &operator=(const TangentSpaceGenerator &) { return *this; }
void compute_basis_vectors(osg::PrimitiveSet *pset,
const osg::Array *vx,
const osg::Array *nx,
const osg::Array *tx,
const osg::IndexArray *vix,
const osg::IndexArray *nix,
const osg::IndexArray *tix,
int iA, int iB, int iC);
// Base class for computing basis vectors
class BasisVectorsComputer : public osg::Referenced
{
public:
explicit BasisVectorsComputer(TangentSpaceGenerator* base) : base_( base ) {}
virtual void compute(osg::PrimitiveSet *pset,
const osg::Array *vx,
const osg::Array *nx,
const osg::Array *tx,
const osg::IndexArray *vix,
const osg::IndexArray *nix,
const osg::IndexArray *tix,
int iA, int iB, int iC) = 0;
protected:
virtual ~BasisVectorsComputer() {}
BasisVectorsComputer(const TangentSpaceGenerator &copy, const osg::CopyOp &copyop);
TangentSpaceGenerator* base_;
};
// Class for computing basis vectors without using indices
class VectorsComputerNoIndices : public BasisVectorsComputer
{
public:
explicit VectorsComputerNoIndices(TangentSpaceGenerator* base) : BasisVectorsComputer( base ) {}
void compute(osg::PrimitiveSet *pset,
const osg::Array *vx,
const osg::Array *nx,
const osg::Array *tx,
const osg::IndexArray *vix,
const osg::IndexArray *nix,
const osg::IndexArray *tix,
int iA, int iB, int iC);
protected:
virtual ~VectorsComputerNoIndices() {}
};
// Class for computing basis vectors using indices
class VectorsComputerUsingIndices : public BasisVectorsComputer
{
public:
explicit VectorsComputerUsingIndices(TangentSpaceGenerator* base) : BasisVectorsComputer( base ) {}
void compute(osg::PrimitiveSet *pset,
const osg::Array *vx,
const osg::Array *nx,
const osg::Array *tx,
const osg::IndexArray *vix,
const osg::IndexArray *nix,
const osg::IndexArray *tix,
int iA, int iB, int iC);
protected:
virtual ~VectorsComputerUsingIndices() {}
};
private:
osg::ref_ptr<osg::Vec4Array> T_;