Initiual commit: AssetImporter source moved from ZFXCE repository to its own repository. PLease do not use the ZFXCE repo any more.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/JoinVerticesProcess.h

@@ -0,0 +1,65 @@
+/** @file Defines a post processing step to join identical vertices on all imported meshes.*/
+#ifndef AI_JOINVERTICESPROCESS_H_INC
+#define AI_CALCTANGENTSPROCESS_H_INC
+
+#include "BaseProcess.h"
+#include "../include/aiTypes.h"
+
+struct aiMesh;
+
+namespace Assimp
+{
+
+// ---------------------------------------------------------------------------
+/** The JoinVerticesProcess unites identical vertices in all imported meshes. 
+ * By default the importer returns meshes where each face addressed its own 
+ * set of vertices even if that means that identical vertices are stored multiple
+ * times. The JoinVerticesProcess finds these identical vertices and 
+ * erases all but one of the copies. This usually reduces the number of vertices
+ * in a mesh by a serious amount and is the standard form to render a mesh.
+ */
+class JoinVerticesProcess : public BaseProcess
+{
+	friend class Importer;
+
+protected:
+	/** Constructor to be privately used by Importer */
+	JoinVerticesProcess();
+
+	/** Destructor, private as well */
+	~JoinVerticesProcess();
+
+public:
+	// -------------------------------------------------------------------
+	/** Returns whether the processing step is present in the given flag field.
+	 * @param pFlags The processing flags the importer was called with. A bitwise
+	 *   combination of #aiPostProcessSteps.
+	 * @return true if the process is present in this flag fields, false if not.
+	*/
+	bool IsActive( unsigned int pFlags) const;
+
+	// -------------------------------------------------------------------
+	/** Executes the post processing step on the given imported data.
+	* At the moment a process is not supposed to fail.
+	* @param pScene The imported data to work at.
+	*/
+	void Execute( aiScene* pScene);
+
+protected:
+	// -------------------------------------------------------------------
+	/** Unites identical vertices in the given mesh.
+	 * @param pMesh The mesh to process.
+	 */
+	void ProcessMesh( aiMesh* pMesh);
+
+	/** Little helper function to calculate the quadratic difference of two colours. */
+	float GetColorDifference( const aiColor4D& pColor1, const aiColor4D& pColor2) const
+	{
+		aiColor4D c( pColor1.r - pColor2.r, pColor1.g - pColor2.g, pColor1.b - pColor2.b, pColor1.a - pColor2.a);
+		return c.r*c.r + c.g*c.g + c.b*c.b + c.a*c.a;
+	}
+};
+
+} // end of namespace Assimp
+
+#endif // AI_CALCTANGENTSPROCESS_H_INC