Hi,
what's wrong in the following code?
Code:
osg::Geometry* createPyramid(const osg::Matrixd& iTransform, const osg::Vec4&
iColor)
{
osg::Geometry* geom = new osg::Geometry;
osg::Vec3Array* vertices = new osg::Vec3Array(5+2);
(*vertices)[0].set(iTransform.preMult(osg::Vec3d(8.0f, 0.0f, 0.0f)));
(*vertices)[1].set(iTransform.preMult(osg::Vec3d(0.0f, 8.0f, 0.0f)));
(*vertices)[2].set(iTransform.preMult(osg::Vec3d(-8.0f, 0.0f, 0.0f)));
(*vertices)[3].set(iTransform.preMult(osg::Vec3d(0.0f, -8.0f, 0.0f)));
(*vertices)[4].set(iTransform.preMult(osg::Vec3d(0.0f, 0.0f, 25.0f)));
(*vertices)[5].set(iTransform.preMult(osg::Vec3d(0.0f, 0.0f, 25.0f)));
//4line
(*vertices)[6].set(iTransform.preMult(osg::Vec3d(0.0f, 0.0f, -50.0f)));
//4line
osg::UByteArray* indices = new osg::UByteArray(18);
(*indices)[0]=0; (*indices)[1]=1; (*indices)[2]=4;
(*indices)[3]=1; (*indices)[4]=2; (*indices)[5]=4;
(*indices)[6]=2; (*indices)[7]=3; (*indices)[8]=4;
(*indices)[9]=3; (*indices)[10]=0; (*indices)[11]=4;
(*indices)[12]=1; (*indices)[13]=0; (*indices)[14]=3;
(*indices)[15]=2; (*indices)[16]=1; (*indices)[17]=3;
geom->setVertexArray(vertices);
geom->setVertexIndices(indices);
osg::Vec4Array* colors = new osg::Vec4Array;
colors->push_back(iColor);
geom->setColorArray(colors);
geom->setColorBinding(osg::Geometry::BIND_OVERALL);
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::TRIANGLES, 0,
indices->size()));
geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::LINES, 5, 2));
//4line
return geom;
}
I added the three "//4line" lines of code to explain my problem. In this case I
would add a line starting from the top of the pyramid downwards but I just see
the pyramid instead.
Regards
Gianni
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=29322#29322
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