FGFS-4.1/OpenSceneGraph
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Improvements to handling of winding of polygons.

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This commit is contained in:
Robert Osfield
2004-08-26 16:20:26 +00:00
parent 71149635fc
commit b5c2d85962
3 changed files with 44 additions and 5 deletions
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8
src/osgPlugins/obj/ReaderWriterOBJ.cpp
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@@ -268,8 +268,6 @@ osg::Geometry* ReaderWriterOBJ::convertElementListToGeometry(obj::Model& model,
}
bool reverseWinding = true;
if (numPolygonElements>0)
{
unsigned int startPos = vertices->size();
@@ -284,7 +282,7 @@ osg::Geometry* ReaderWriterOBJ::convertElementListToGeometry(obj::Model& model,
{
drawArrayLengths->push_back(element.vertexIndices.size());
if (reverseWinding)
if (model.needReverse(element))
{
// need to reverse so add to OSG arrays in same order as in OBJ, as OSG assume anticlockwise ordering.
for(obj::Element::IndexList::reverse_iterator index_itr = element.vertexIndices.rbegin();
@@ -319,7 +317,7 @@ osg::Geometry* ReaderWriterOBJ::convertElementListToGeometry(obj::Model& model,
index_itr != element.vertexIndices.end();
++index_itr)
{
vertices->push_back(model.vertices[*index_itr]);
vertices->push_back(transformVertex(model.vertices[*index_itr]));
}
if (numNormalIndices)
{
@@ -327,7 +325,7 @@ osg::Geometry* ReaderWriterOBJ::convertElementListToGeometry(obj::Model& model,
index_itr != element.normalIndices.end();
++index_itr)
{
normals->push_back(model.normals[*index_itr]);
normals->push_back(transformNormal(model.normals[*index_itr]));
}
}
if (numTexCoordIndices)