If the Geometry is a colletion of TriangleFan or GL_POLYGONS etc...
will this function again generate a distinct triangles from this
QUADS, POLYGONS and TRIANGLEFANs etc ?
2006/8/30, Don Burns <[EMAIL PROTECTED]>:
Hi Jeff,
An improvement would be to use a osg::Vec3Array instead of a
std::vector<float> m_VertexList. An osg::Vec3Array is, in essence, an
std::vector<osg::Vec3> ... . This keeps your triples together.
-don
On 8/29/06, Jeff Kershner <[EMAIL PROTECTED]> wrote:
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> I am using the TriangleFunctor like Robert suggested to get triangle
information. What I need is a vertex buffer that I can give to the physics
objects. Something is not working between OSG and ODE and I am not sure if
I am not getting the triangles correctly.
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> This is what I do:
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> struct Triangle
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> {
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> void operator() (const osg::Vec3& v1, const osg::Vec3& v2,
const osg::Vec3& v3, bool)
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> {
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> m_VertexList.push_back(v1[0]);
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> m_VertexList.push_back(v1[1]);
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> m_VertexList.push_back(v1[2]);
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> m_VertexList.push_back(v2[0]);
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> m_VertexList.push_back(v2[1]);
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> m_VertexList.push_back(v2[2]);
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> m_VertexList.push_back(v3[0]);
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> m_VertexList.push_back(v3[1]);
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> m_VertexList.push_back(v3[2]);
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> }
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> std::vector<float> m_VertexList;
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> };
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> …
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> osg::TriangleFunctor<Triangle> tf;
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> pGeometry->accept(tf);
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> So after this m_VertexList should be a list of all the vertices… correct?
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> Then to create a vertex array I am doing the following:
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> float* pVertexArray = new float[tf.m_VertexList.size()];
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> int c = 0;
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> for (vector<float>::iterator it = tf.m_VertexList.begin(); it !=
tf.VertexList.end(); it++)
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> pVertexBuffer[c++] = *it;
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>
>
> Is this a correct to create a Vertex Array?
>
> /jk
>
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>
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