2008-06-01 12:46:17 +00:00
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/*
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Open Asset Import Library (ASSIMP)
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----------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the ASSIMP Development Team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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2008-11-16 21:56:45 +00:00
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/** @file Definition of a helper step that processes texture transformations */
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2008-06-01 12:46:17 +00:00
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#ifndef AI_TEXTURE_TRANSFORM_H_INCLUDED
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#define AI_TEXTURE_TRANSFORM_H_INCLUDED
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#include "BaseImporter.h"
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2008-11-16 21:56:45 +00:00
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#include "BaseProcess.h"
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2008-06-01 12:46:17 +00:00
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struct aiNode;
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2008-11-16 21:56:45 +00:00
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namespace Assimp {
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#define AI_TT_UV_IDX_LOCK_TBD 0xffffffff
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#define AI_TT_UV_IDX_LOCK_NONE 0xeeeeeeee
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#define AI_TT_ROTATION_EPSILON ((float)AI_DEG_TO_RAD(0.5))
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// ---------------------------------------------------------------------------
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/** Small helper structure representing a shortcut into the material list
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* to be able to update some values quickly.
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*/
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struct TTUpdateInfo
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{
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TTUpdateInfo()
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: mat (NULL)
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, directShortcut (NULL)
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, semantic (0)
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, index (0)
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{}
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//! Direct shortcut, if available
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unsigned int* directShortcut;
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//! Material
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MaterialHelper* mat;
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//! Texture type and index
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unsigned int semantic, index;
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};
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2008-06-01 12:46:17 +00:00
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// ---------------------------------------------------------------------------
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/** Helper class representing texture coordinate transformations
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*/
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2008-11-16 21:56:45 +00:00
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struct STransformVecInfo : public aiUVTransform
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{
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2008-06-03 21:50:53 +00:00
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STransformVecInfo()
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: uvIndex (0)
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, mapU (aiTextureMapMode_Wrap)
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, mapV (aiTextureMapMode_Wrap)
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, lockedPos (AI_TT_UV_IDX_LOCK_NONE)
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{}
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//! Source texture coordinate index
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unsigned int uvIndex;
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//! Texture mapping mode in the u, v direction
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aiTextureMapMode mapU,mapV;
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//! Locked destination UV index
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//! AI_TT_UV_IDX_LOCK_TBD - to be determined
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//! AI_TT_UV_IDX_LOCK_NONE - none (default)
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unsigned int lockedPos;
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//! Update info - shortcuts into all materials
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//! that are referencing this transform setup
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std::list<TTUpdateInfo> updateList;
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// -------------------------------------------------------------------
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/** Compare two transform setups
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*/
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inline bool operator== (const STransformVecInfo& other) const
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{
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// We use a small epsilon here
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const float epsilon = 0.05f;
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if (fabs( mTranslation.x - other.mTranslation.x ) > epsilon ||
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fabs( mTranslation.y - other.mTranslation.y ) > epsilon)
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{
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return false;
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}
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if (fabs( mScaling.x - other.mScaling.x ) > epsilon ||
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fabs( mScaling.y - other.mScaling.y ) > epsilon)
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{
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return false;
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}
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if (fabs( mRotation - other.mRotation) > epsilon)
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{
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return false;
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}
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return true;
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}
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inline bool operator!= (const STransformVecInfo& other) const
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{
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return !(*this == other);
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}
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2008-06-03 21:50:53 +00:00
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// -------------------------------------------------------------------
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/** Returns whether this is an untransformed texture coordinate set
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*/
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inline bool IsUntransformed() const
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{
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return (1.0f == mScaling.x && 1.f == mScaling.y &&
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!mTranslation.x && !mTranslation.y &&
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mRotation < AI_TT_ROTATION_EPSILON);
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}
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2008-06-01 12:46:17 +00:00
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// -------------------------------------------------------------------
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/** Build a 3x3 matrix from the transformations
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*/
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inline void GetMatrix(aiMatrix3x3& mOut)
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{
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mOut = aiMatrix3x3();
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if (1.0f != mScaling.x || 1.0f != mScaling.y)
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{
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aiMatrix3x3 mScale;
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mScale.a1 = mScaling.x;
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mScale.b2 = mScaling.y;
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mOut = mScale;
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}
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if (mRotation)
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{
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aiMatrix3x3 mRot;
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mRot.a1 = mRot.b2 = cos(mRotation);
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mRot.a2 = mRot.b1 = sin(mRotation);
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mRot.a2 = -mRot.a2;
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mOut *= mRot;
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}
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if (mTranslation.x || mTranslation.y)
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{
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aiMatrix3x3 mTrans;
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mTrans.a3 = mTranslation.x;
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mTrans.b3 = mTranslation.y;
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mOut *= mTrans;
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}
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}
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};
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// ---------------------------------------------------------------------------
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2008-11-16 21:56:45 +00:00
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/** Helper step to compute final UV coordinate sets if there are scalings
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* or rotations in the original data read from the file.
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*/
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class ASSIMP_API TextureTransformStep : public BaseProcess
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{
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public:
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2008-11-16 21:56:45 +00:00
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TextureTransformStep();
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~TextureTransformStep();
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// -------------------------------------------------------------------
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bool IsActive( unsigned int pFlags) const;
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// -------------------------------------------------------------------
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void Execute( aiScene* pScene);
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// -------------------------------------------------------------------
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void SetupProperties(const Importer* pImp);
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protected:
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// -------------------------------------------------------------------
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/** Preprocess a specific UV transformation setup
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*
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* @param info Transformation setup to be preprocessed.
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*/
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void PreProcessUVTransform(STransformVecInfo& info);
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private:
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unsigned int configFlags;
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};
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2008-08-17 15:04:10 +00:00
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}
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2008-08-17 15:04:10 +00:00
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#endif //! AI_TEXTURE_TRANSFORM_H_INCLUDED
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