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Initial work on progressive mesh generation. Currently based on Stan Melax's PolyChop.

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This commit is contained in:
David Williams
2009-10-20 22:02:58 +00:00
parent 5eb538e925
commit c695a7bc86
16 changed files with 1006 additions and 26 deletions
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44
examples/OpenGL/OpenGLWidget.cpp
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@@ -16,7 +16,7 @@ OpenGLWidget::OpenGLWidget(QWidget *parent)
{
m_xRotation = 0;
m_yRotation = 0;
m_uRegionSideLength = 32.0f;
m_uRegionSideLength = 32;
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(update()));
@@ -72,18 +72,23 @@ void OpenGLWidget::setVolume(PolyVox::Volume<PolyVox::uint8_t>* volData)
//isp->smooth(0.3f);
//ispCurrent->generateAveragedFaceNormals(true);
if(isp->m_vecTriangleIndices.size() > 0)
{
isp->makeProgressiveMesh();
Vector3DUint8 v3dRegPos(uRegionX,uRegionY,uRegionZ);
if(m_bUseOpenGLVertexBufferObjects)
{
OpenGLSurfacePatch openGLSurfacePatch = BuildOpenGLSurfacePatch(*(isp.get()));
m_mapOpenGLSurfacePatches.insert(make_pair(v3dRegPos, openGLSurfacePatch));
Vector3DUint8 v3dRegPos(uRegionX,uRegionY,uRegionZ);
if(m_bUseOpenGLVertexBufferObjects)
{
OpenGLSurfacePatch openGLSurfacePatch = BuildOpenGLSurfacePatch(*(isp.get()));
m_mapOpenGLSurfacePatches.insert(make_pair(v3dRegPos, openGLSurfacePatch));
}
//else
//{
m_mapIndexedSurfacePatches.insert(make_pair(v3dRegPos, isp));
//}
//delete ispCurrent;
}
else
{
m_mapIndexedSurfacePatches.insert(make_pair(v3dRegPos, isp));
}
//delete ispCurrent;
}
}
}
@@ -161,15 +166,18 @@ void OpenGLWidget::paintGL()
for(PolyVox::uint16_t uRegionX = 0; uRegionX < m_uVolumeWidthInRegions; ++uRegionX)
{
Vector3DUint8 v3dRegPos(uRegionX,uRegionY,uRegionZ);
if(m_bUseOpenGLVertexBufferObjects)
{
renderRegionVertexBufferObject(m_mapOpenGLSurfacePatches[v3dRegPos]);
}
else
if(m_mapIndexedSurfacePatches.find(v3dRegPos) != m_mapIndexedSurfacePatches.end())
{
POLYVOX_SHARED_PTR<IndexedSurfacePatch> ispCurrent = m_mapIndexedSurfacePatches[v3dRegPos];
renderRegionImmediateMode(*ispCurrent);
unsigned int uLodLevel = 0; //ispCurrent->m_vecLodRecords.size() - 1;
if(m_bUseOpenGLVertexBufferObjects)
{
renderRegionVertexBufferObject(m_mapOpenGLSurfacePatches[v3dRegPos], uLodLevel);
}
else
{
renderRegionImmediateMode(*ispCurrent, uLodLevel);
}
}
}
}