461 lines
12 KiB
C++
461 lines
12 KiB
C++
/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2012, assimp 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 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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/** @file MD5Parser.h
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* @brief Definition of the .MD5 parser class.
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* http://www.modwiki.net/wiki/MD5_(file_format)
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*/
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#ifndef AI_MD5PARSER_H_INCLUDED
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#define AI_MD5PARSER_H_INCLUDED
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#include "../include/assimp/types.h"
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#include "ParsingUtils.h"
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struct aiFace;
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namespace Assimp {
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namespace MD5 {
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// ---------------------------------------------------------------------------
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/** Represents a single element in a MD5 file
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*
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* Elements are always contained in sections.
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*/
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struct Element
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{
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//! Points to the starting point of the element
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//! Whitespace at the beginning and at the end have been removed,
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//! Elements are terminated with \0
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char* szStart;
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//! Original line number (can be used in error messages
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//! if a parsing error occurs)
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unsigned int iLineNumber;
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};
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typedef std::vector< Element > ElementList;
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// ---------------------------------------------------------------------------
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/** Represents a section of a MD5 file (such as the mesh or the joints section)
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*
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* A section is always enclosed in { and } brackets.
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*/
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struct Section
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{
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//! Original line number (can be used in error messages
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//! if a parsing error occurs)
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unsigned int iLineNumber;
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//! List of all elements which have been parsed in this section.
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ElementList mElements;
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//! Name of the section
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std::string mName;
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//! For global elements: the value of the element as string
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//! Iif !length() the section is not a global element
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std::string mGlobalValue;
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};
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typedef std::vector< Section> SectionList;
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// ---------------------------------------------------------------------------
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/** Basic information about a joint
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*/
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struct BaseJointDescription
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{
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//! Name of the bone
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aiString mName;
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//! Parent index of the bone
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int mParentIndex;
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};
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// ---------------------------------------------------------------------------
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/** Represents a bone (joint) descriptor in a MD5Mesh file
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*/
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struct BoneDesc : BaseJointDescription
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{
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//! Absolute position of the bone
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aiVector3D mPositionXYZ;
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//! Absolute rotation of the bone
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aiVector3D mRotationQuat;
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aiQuaternion mRotationQuatConverted;
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//! Absolute transformation of the bone
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//! (temporary)
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aiMatrix4x4 mTransform;
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//! Inverse transformation of the bone
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//! (temporary)
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aiMatrix4x4 mInvTransform;
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//! Internal
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unsigned int mMap;
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};
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typedef std::vector< BoneDesc > BoneList;
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// ---------------------------------------------------------------------------
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/** Represents a bone (joint) descriptor in a MD5Anim file
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*/
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struct AnimBoneDesc : BaseJointDescription
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{
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//! Flags (AI_MD5_ANIMATION_FLAG_xxx)
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unsigned int iFlags;
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//! Index of the first key that corresponds to this anim bone
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unsigned int iFirstKeyIndex;
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};
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typedef std::vector< AnimBoneDesc > AnimBoneList;
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// ---------------------------------------------------------------------------
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/** Represents a base frame descriptor in a MD5Anim file
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*/
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struct BaseFrameDesc
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{
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aiVector3D vPositionXYZ;
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aiVector3D vRotationQuat;
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};
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typedef std::vector< BaseFrameDesc > BaseFrameList;
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// ---------------------------------------------------------------------------
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/** Represents a camera animation frame in a MDCamera file
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*/
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struct CameraAnimFrameDesc : BaseFrameDesc
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{
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float fFOV;
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};
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typedef std::vector< CameraAnimFrameDesc > CameraFrameList;
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// ---------------------------------------------------------------------------
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/** Represents a frame descriptor in a MD5Anim file
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*/
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struct FrameDesc
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{
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//! Index of the frame
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unsigned int iIndex;
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//! Animation keyframes - a large blob of data at first
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std::vector< float > mValues;
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};
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typedef std::vector< FrameDesc > FrameList;
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// ---------------------------------------------------------------------------
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/** Represents a vertex descriptor in a MD5 file
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*/
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struct VertexDesc
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{
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VertexDesc()
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: mFirstWeight (0)
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, mNumWeights (0)
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{}
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//! UV cordinate of the vertex
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aiVector2D mUV;
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//! Index of the first weight of the vertex in
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//! the vertex weight list
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unsigned int mFirstWeight;
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//! Number of weights assigned to this vertex
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unsigned int mNumWeights;
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};
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typedef std::vector< VertexDesc > VertexList;
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// ---------------------------------------------------------------------------
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/** Represents a vertex weight descriptor in a MD5 file
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*/
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struct WeightDesc
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{
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//! Index of the bone to which this weight refers
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unsigned int mBone;
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//! The weight value
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float mWeight;
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//! The offset position of this weight
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// ! (in the coordinate system defined by the parent bone)
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aiVector3D vOffsetPosition;
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};
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typedef std::vector< WeightDesc > WeightList;
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typedef std::vector< aiFace > FaceList;
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// ---------------------------------------------------------------------------
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/** Represents a mesh in a MD5 file
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*/
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struct MeshDesc
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{
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//! Weights of the mesh
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WeightList mWeights;
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//! Vertices of the mesh
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VertexList mVertices;
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//! Faces of the mesh
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FaceList mFaces;
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//! Name of the shader (=texture) to be assigned to the mesh
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aiString mShader;
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};
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typedef std::vector< MeshDesc > MeshList;
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// ---------------------------------------------------------------------------
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// Convert a quaternion to its usual representation
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inline void ConvertQuaternion (const aiVector3D& in, aiQuaternion& out) {
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out.x = in.x;
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out.y = in.y;
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out.z = in.z;
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const float t = 1.0f - (in.x*in.x) - (in.y*in.y) - (in.z*in.z);
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if (t < 0.0f)
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out.w = 0.0f;
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else out.w = sqrt (t);
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}
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// ---------------------------------------------------------------------------
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/** Parses the data sections of a MD5 mesh file
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*/
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class MD5MeshParser
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{
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public:
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// -------------------------------------------------------------------
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/** Constructs a new MD5MeshParser instance from an existing
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* preparsed list of file sections.
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*
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* @param mSections List of file sections (output of MD5Parser)
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*/
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MD5MeshParser(SectionList& mSections);
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//! List of all meshes
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MeshList mMeshes;
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//! List of all joints
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BoneList mJoints;
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};
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// remove this flag if you need to the bounding box data
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#define AI_MD5_PARSE_NO_BOUNDS
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// ---------------------------------------------------------------------------
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/** Parses the data sections of a MD5 animation file
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*/
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class MD5AnimParser
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{
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public:
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// -------------------------------------------------------------------
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/** Constructs a new MD5AnimParser instance from an existing
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* preparsed list of file sections.
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*
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* @param mSections List of file sections (output of MD5Parser)
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*/
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MD5AnimParser(SectionList& mSections);
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//! Output frame rate
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float fFrameRate;
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//! List of animation bones
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AnimBoneList mAnimatedBones;
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//! List of base frames
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BaseFrameList mBaseFrames;
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//! List of animation frames
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FrameList mFrames;
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//! Number of animated components
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unsigned int mNumAnimatedComponents;
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};
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// ---------------------------------------------------------------------------
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/** Parses the data sections of a MD5 camera animation file
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*/
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class MD5CameraParser
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{
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public:
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// -------------------------------------------------------------------
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/** Constructs a new MD5CameraParser instance from an existing
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* preparsed list of file sections.
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*
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* @param mSections List of file sections (output of MD5Parser)
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*/
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MD5CameraParser(SectionList& mSections);
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//! Output frame rate
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float fFrameRate;
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//! List of cuts
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std::vector<unsigned int> cuts;
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//! Frames
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CameraFrameList frames;
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};
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// ---------------------------------------------------------------------------
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/** Parses the block structure of MD5MESH and MD5ANIM files (but does no
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* further processing)
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*/
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class MD5Parser
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{
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public:
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// -------------------------------------------------------------------
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/** Constructs a new MD5Parser instance from an existing buffer.
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*
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* @param buffer File buffer
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* @param fileSize Length of the file in bytes (excluding a terminal 0)
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*/
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MD5Parser(char* buffer, unsigned int fileSize);
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// -------------------------------------------------------------------
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/** Report a specific error message and throw an exception
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* @param error Error message to be reported
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* @param line Index of the line where the error occured
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*/
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static void ReportError (const char* error, unsigned int line);
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// -------------------------------------------------------------------
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/** Report a specific warning
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* @param warn Warn message to be reported
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* @param line Index of the line where the error occured
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*/
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static void ReportWarning (const char* warn, unsigned int line);
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void ReportError (const char* error) {
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return ReportError(error, lineNumber);
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}
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void ReportWarning (const char* warn) {
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return ReportWarning(warn, lineNumber);
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}
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public:
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//! List of all sections which have been read
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SectionList mSections;
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private:
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// -------------------------------------------------------------------
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/** Parses a file section. The current file pointer must be outside
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* of a section.
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* @param out Receives the section data
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* @return true if the end of the file has been reached
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* @throws ImportErrorException if an error occurs
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*/
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bool ParseSection(Section& out);
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// -------------------------------------------------------------------
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/** Parses the file header
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* @throws ImportErrorException if an error occurs
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*/
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void ParseHeader();
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// override these functions to make sure the line counter gets incremented
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// -------------------------------------------------------------------
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bool SkipLine( const char* in, const char** out)
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{
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++lineNumber;
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return Assimp::SkipLine(in,out);
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}
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// -------------------------------------------------------------------
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bool SkipLine( )
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{
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return SkipLine(buffer,(const char**)&buffer);
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}
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// -------------------------------------------------------------------
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bool SkipSpacesAndLineEnd( const char* in, const char** out)
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{
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bool bHad = false;
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bool running = true;
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while (running) {
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if( *in == '\r' || *in == '\n') {
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// we open files in binary mode, so there could be \r\n sequences ...
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if (!bHad) {
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bHad = true;
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++lineNumber;
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}
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}
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else if (*in == '\t' || *in == ' ')bHad = false;
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else break;
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in++;
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}
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*out = in;
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return *in != '\0';
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}
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// -------------------------------------------------------------------
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bool SkipSpacesAndLineEnd( )
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{
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return SkipSpacesAndLineEnd(buffer,(const char**)&buffer);
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}
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// -------------------------------------------------------------------
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bool SkipSpaces( )
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{
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return Assimp::SkipSpaces((const char**)&buffer);
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}
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char* buffer;
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unsigned int fileSize;
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unsigned int lineNumber;
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};
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}}
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#endif // AI_MD5PARSER_H_INCLUDED
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