132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
/*
|
|
---------------------------------------------------------------------------
|
|
Free 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.
|
|
---------------------------------------------------------------------------
|
|
*/
|
|
|
|
#if (!defined AV_MESH_RENDERER_H_INCLUDED)
|
|
#define AV_MESH_RENDERER_H_INCLUDED
|
|
|
|
|
|
#define AI_VIEW_ALPHA_SORT_DELTA 3
|
|
|
|
//-------------------------------------------------------------------------------
|
|
/* Helper class tp render meshes
|
|
*/
|
|
//-------------------------------------------------------------------------------
|
|
class CMeshRenderer
|
|
{
|
|
private:
|
|
|
|
// default constructor
|
|
CMeshRenderer()
|
|
: m_bRotationChanged(true),
|
|
m_iFrameCount(AI_VIEW_ALPHA_SORT_DELTA-1)
|
|
{
|
|
// no other members to initialize
|
|
}
|
|
|
|
public:
|
|
|
|
//------------------------------------------------------------------
|
|
// Singleton accessors
|
|
static CMeshRenderer s_cInstance;
|
|
inline static CMeshRenderer& Instance ()
|
|
{
|
|
return s_cInstance;
|
|
}
|
|
|
|
|
|
//------------------------------------------------------------------
|
|
// Draw a mesh in the global mesh list using the current pipeline state
|
|
// iIndex Index of the mesh to be drawn
|
|
//
|
|
// The function draws all faces in order, regardless of their distance
|
|
int DrawUnsorted(unsigned int iIndex);
|
|
|
|
//------------------------------------------------------------------
|
|
// Draw a mesh in the global mesh list using the current pipeline state
|
|
// iIndex Index of the mesh to be drawn
|
|
//
|
|
// The method sorts all vertices by their distance (back to front)
|
|
//
|
|
// mWorld World matrix for the node
|
|
int DrawSorted(unsigned int iIndex,
|
|
const aiMatrix4x4& mWorld);
|
|
|
|
|
|
//------------------------------------------------------------------
|
|
// Indicate that the rotation of the object or the camera has
|
|
// been changed, thus the alpha order tree must be updated
|
|
inline void SetRotationChangedFlag()
|
|
{
|
|
this->m_bRotationChanged = true;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Reset the state of the class
|
|
// Called whenever a new asset is loaded
|
|
inline void Reset()
|
|
{
|
|
this->m_bRotationChanged = true;
|
|
this->m_iFrameCount = 2;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
// Called at the beginning of the frame. Reset the state
|
|
// of the instance
|
|
inline void OnBeginFrame()
|
|
{
|
|
if (0 == this->m_iFrameCount)
|
|
{
|
|
this->m_bRotationChanged = false;
|
|
}
|
|
}
|
|
|
|
private:
|
|
|
|
// true if the rotation of the object or camera has changed
|
|
// in the last frame. If there were no changes it should
|
|
// not be necessary to update the alpha ordering tree
|
|
bool m_bRotationChanged;
|
|
|
|
// only update the alpha order each AI_VIEW_ALPHA_SORT_DELTA frames
|
|
unsigned int m_iFrameCount;
|
|
};
|
|
|
|
#endif //!! include guard
|