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From Farshid Lashkari, " small update to TangentSpaceGenerator to support QUAD_STRIP primitive types."

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This commit is contained in:
Robert Osfield 2013-05-25 10:09:23 +00:00
parent 0eb95f01d8
commit f3d21bd285
1 changed files with 26 additions and 0 deletions
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26
src/osgUtil/TangentSpaceGenerator.cpp
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@ -103,6 +103,32 @@ void TangentSpaceGenerator::generate(osg::Geometry *geo, int normal_map_tex_unit
}
break;
case osg::PrimitiveSet::QUAD_STRIP:
if (pset->getType() == osg::PrimitiveSet::DrawArrayLengthsPrimitiveType) {
osg::DrawArrayLengths *dal = static_cast<osg::DrawArrayLengths *>(pset);
unsigned int j = 0;
for (osg::DrawArrayLengths::const_iterator pi=dal->begin(); pi!=dal->end(); ++pi) {
unsigned int iN = static_cast<unsigned int>(*pi-2);
for (i=0; i<iN; ++i, ++j) {
if ((i%2) == 0) {
compute(pset, vx, nx, tx, j, j+2, j+1);
} else {
compute(pset, vx, nx, tx, j, j+1, j+2);
}
}
j += 2;
}
} else {
for (i=0; i<N-2; ++i) {
if ((i%2) == 0) {
compute(pset, vx, nx, tx, i, i+2, i+1);
} else {
compute(pset, vx, nx, tx, i, i+1, i+2);
}
}
}
break;
case osg::PrimitiveSet::TRIANGLE_FAN:
case osg::PrimitiveSet::POLYGON:
if (pset->getType() == osg::PrimitiveSet::DrawArrayLengthsPrimitiveType) {