Triangulation:

- FEATURE: Concave polygons are now triangulated correctly.
 - internal face order is ccw now, flipwinding part of converttolh flag
 - added test files for the various formats supporting such polygons

FindDegenerates: 
 - improved behaviour when processing polygons, more tolerant.

Obj: 
 - material files are now properly read using the given IOSystem 
 - redirecting some std::cerr calls to our logger 
 - spaces and tabs are now allowed at the beginning of a line 

Viewer: 
 - max smoothing angle for normals is set to 90 deg now

vc9-workspace 
 - added assimp_cmd, renamed some virtual folders to be sexier.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@374 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

test/unit/utTriangulate.cpp

@@ -13,6 +13,7 @@ void TriangulateProcessTest :: setUp (void)
 
 	pcMesh->mNumFaces = 1000;
 	pcMesh->mFaces = new aiFace[1000];
+	pcMesh->mVertices = new aiVector3D[10000];
 
 	pcMesh->mPrimitiveTypes = aiPrimitiveType_POINT | aiPrimitiveType_LINE | 
 		aiPrimitiveType_LINE | aiPrimitiveType_POLYGON;
@@ -32,7 +33,13 @@ void TriangulateProcessTest :: setUp (void)
 		face.mIndices = new unsigned int[face.mNumIndices];
 		for (unsigned int p = 0; p < face.mNumIndices; ++p)
 		{
-			face.mIndices[p] = pcMesh->mNumVertices++;
+			face.mIndices[p] = pcMesh->mNumVertices;
+
+			// construct fully convex input data in ccw winding, xy plane
+			aiVector3D& v = pcMesh->mVertices[pcMesh->mNumVertices++];
+			v.z = 0.f;
+			v.x = cos (p * AI_MATH_TWO_PI/face.mNumIndices);
+			v.y = sin (p * AI_MATH_TWO_PI/face.mNumIndices);
 		}
 	}
 }
@@ -86,4 +93,7 @@ void  TriangulateProcessTest :: testTriangulation (void)
 			}
 		}
 	}
+
+	// we should have no valid normal vectors now necause we aren't a pure polygon mesh
+	CPPUNIT_ASSERT(pcMesh->mNormals == NULL);
 }