114 lines
4.4 KiB
C++
114 lines
4.4 KiB
C++
/*
|
|
Open Asset Import Library (ASSIMP)
|
|
----------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006-2008, ASSIMP Development Team
|
|
All rights reserved.
|
|
|
|
Redistribution and use of this software in source and binary forms,
|
|
with or without modification, are permitted provided that the
|
|
following conditions are met:
|
|
|
|
* Redistributions of source code must retain the above
|
|
copyright notice, this list of conditions and the
|
|
following disclaimer.
|
|
|
|
* Redistributions in binary form must reproduce the above
|
|
copyright notice, this list of conditions and the
|
|
following disclaimer in the documentation and/or other
|
|
materials provided with the distribution.
|
|
|
|
* Neither the name of the ASSIMP team, nor the names of its
|
|
contributors may be used to endorse or promote products
|
|
derived from this software without specific prior
|
|
written permission of the ASSIMP Development Team.
|
|
|
|
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
----------------------------------------------------------------------
|
|
*/
|
|
|
|
/** @file Defines a post processing step to join identical vertices
|
|
on all imported meshes.*/
|
|
#ifndef AI_JOINVERTICESPROCESS_H_INC
|
|
#define AI_JOINVERTICESPROCESS_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 ASSIMP_API 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.
|
|
* @param meshIndex Index of the mesh to process
|
|
*/
|
|
int ProcessMesh( aiMesh* pMesh, unsigned int meshIndex);
|
|
|
|
// -------------------------------------------------------------------
|
|
/** Little helper function to calculate the quadratic difference
|
|
* of two colours.
|
|
* @param pColor1 First color
|
|
* @param pColor2 second color
|
|
* @return Quadratic color difference
|
|
*/
|
|
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
|