Hi,
I have a strange problem. Runing the following code will cause
StateSetManipulator doesn't work. That is I can't enble/ disable texture by
clicking key "T" (And the Lighting, CyclePolygonMode).
I've tried. If keep only one geom->addPrimitiveSet of the first two POLYGONs,
remove the Tessellator part and other PrimitiveSets, the StateSetManipulator
would work.
I was using OSG 2.9.15. It occurs on windows 32-bit and linux 64-bit release.
On windows 32-bit debug and 64-bit release it works fine.
I saw StateSetManipulator::handle() run.
The problem is so strange to me. Do you have the answer to this?
Thank you!
Cheers,
Su
[code]
osg::ref_ptr<osg::Vec3Array> new3DPolygonVertexArray = new osg::Vec3Array;
... get new3DPolygonVertexArray ...
osg::Geode *new3dGeode = create3dShapeFrom2dPolygon(new3DPolygonVertexArray,
m_ZThreshold3d, m_baseShapeColor, m_shapeFileDepthTest);
// destSwitch->addChild(new3dGeode); // 即使不 addChild， StateSetManipulator 也不起作用
osg::Geode *create3dShapeFrom2dPolygon (osg::Vec3Array
*new3DPolygonVertexArray, float zThreshold3d, osg::Vec4 colour, bool depthTest)
{
osg::Geode* boxGeode = new osg::Geode();
osg::ref_ptr<osg::Geometry> geom = new osg::Geometry();
geom->setUseVertexBufferObjects( true );
float min = 0.0;
float max = 0.0;
// Some times begin = end.
if (*(new3DPolygonVertexArray->begin()) !=
*(new3DPolygonVertexArray->end() -1))
{
new3DPolygonVertexArray->push_back(*(new3DPolygonVertexArray->begin()));
}
osg::ref_ptr<osg::Vec3Array> tmpArray = new osg::Vec3Array;
geom->setVertexArray(tmpArray.get());
// Ignore the last point.
for (osg::Vec3Array::iterator iter = new3DPolygonVertexArray->begin();
iter < new3DPolygonVertexArray->end() -1; iter++)
{
tmpArray->push_back(osg::Vec3(iter->x(), iter->y(), min));
// Top
}
for (osg::Vec3Array::iterator iter = new3DPolygonVertexArray->begin();
iter < new3DPolygonVertexArray->end() -1; iter++)
{
tmpArray->push_back(osg::Vec3(iter->x(), iter->y(), max));
// Bottom
}
unsigned int numTopPoints = (tmpArray->size())/2;
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::POLYGON,
0, numTopPoints)); // Top
//geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::POLYGON,
numTopPoints, numTopPoints)); // Bottom
{
osg::ref_ptr<osgUtil::Tessellator> tscx=new
osgUtil::Tessellator;
tscx->setTessellationType(osgUtil::Tessellator::TESS_TYPE_POLYGONS);
tscx->setBoundaryOnly(false);
tscx->setWindingType( osgUtil::Tessellator::TESS_WINDING_ODD);
tscx->retessellatePolygons(*(geom.get()));
}
numTopPoints = (tmpArray->size())/2;
unsigned int numQUAD_STRIP = new3DPolygonVertexArray->size()
-1;//(numPointsAfterTessellate - numPoints*2)/2;
for (osg::Vec3Array::iterator iter = new3DPolygonVertexArray->begin();
iter < new3DPolygonVertexArray->end(); iter++)
{
tmpArray->push_back(osg::Vec3(iter->x(), iter->y(), min));
// Sides
tmpArray->push_back(osg::Vec3(iter->x(), iter->y(), max));
}
for (unsigned int i = 0; i< numQUAD_STRIP; i++)
{
geom->addPrimitiveSet(new
osg::DrawArrays(osg::PrimitiveSet::QUAD_STRIP, numTopPoints *2 + 2*i, 4));//
Sides
}
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINE_LOOP,
0, numTopPoints));
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINE_LOOP,
numTopPoints, numTopPoints));
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES,
numTopPoints*2, numQUAD_STRIP*2));
boxGeode->addDrawable(geom.get());
return boxGeode;
}[/code]
------------------
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http://forum.openscenegraph.org/viewtopic.php?p=46400#46400
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