| 1 | // Copyright (C) 2012-2013 ChaosForge / Kornel Kisielewicz
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| 2 | // http://chaosforge.org/
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| 3 | //
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| 4 | // This file is part of NV Libraries.
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| 5 | // For conditions of distribution and use, see copyright notice in nv.hh
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| 6 |
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| 7 | #include "nv/formats/md5_loader.hh"
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| 8 |
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| 9 | #include <glm/gtc/constants.hpp>
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| 10 | #include <glm/gtx/string_cast.hpp>
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| 11 | #include "nv/logging.hh"
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| 12 | #include "nv/io/std_stream.hh"
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| 13 | #include <cstring>
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| 14 |
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| 15 | using namespace nv;
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| 16 |
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| 17 | // based on http://tfc.duke.free.fr/coding/md5-specs-en.html
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| 18 |
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| 19 | static void next_line( std::istream& stream )
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| 20 | {
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| 21 | stream.ignore( std::numeric_limits<std::streamsize>::max(), '\n' );
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| 22 | }
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| 23 |
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| 24 | static inline void discard( std::istream& stream, const std::string& token )
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| 25 | {
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| 26 | std::string discarded;
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| 27 | stream >> discarded;
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| 28 | assert( discarded == token );
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| 29 | }
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| 30 |
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| 31 |
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| 32 | static void remove_quotes( std::string& str )
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| 33 | {
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| 34 | size_t n;
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| 35 | while ( ( n = str.find('\"') ) != std::string::npos ) str.erase(n,1);
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| 36 | }
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| 37 |
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| 38 | void unit_quat_w( glm::quat& quat )
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| 39 | {
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| 40 | float t = 1.0f - ( quat.x * quat.x ) - ( quat.y * quat.y ) - ( quat.z * quat.z );
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| 41 | quat.w = ( t < 0.0f ? 0.0f : -sqrtf(t) );
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| 42 | }
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| 43 |
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| 44 | bool md5_loader::load( stream& source )
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| 45 | {
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| 46 | std_stream sstream( &source );
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| 47 | std::string command;
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| 48 |
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| 49 | sstream >> command;
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| 50 | while ( !sstream.eof() )
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| 51 | {
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| 52 | if ( command == "MD5Version" )
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| 53 | {
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| 54 | sstream >> m_md5_version;
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| 55 | assert( m_md5_version == 10 );
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| 56 | }
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| 57 | else if ( command == "commandline" )
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| 58 | {
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| 59 | next_line( sstream );
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| 60 | }
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| 61 | else if ( command == "numJoints" )
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| 62 | {
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| 63 | sstream >> m_num_joints;
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| 64 | m_joints.reserve( m_num_joints );
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| 65 | }
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| 66 | else if ( command == "numMeshes" )
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| 67 | {
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| 68 | sstream >> m_num_meshes;
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| 69 | m_meshes.reserve( m_num_meshes );
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| 70 | }
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| 71 | else if ( command == "joints" )
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| 72 | {
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| 73 | discard( sstream, "{" );
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| 74 | md5_joint joint;
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| 75 | for ( size_t i = 0; i < m_num_joints; ++i )
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| 76 | {
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| 77 | sstream >> joint.name >> joint.parent_id;
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| 78 | discard( sstream, "(" );
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| 79 | sstream >> joint.pos.x >> joint.pos.y >> joint.pos.z;
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| 80 | discard( sstream, ")" );
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| 81 | discard( sstream, "(" );
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| 82 | sstream >> joint.orient.x >> joint.orient.y >> joint.orient.z;
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| 83 | remove_quotes( joint.name );
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| 84 | unit_quat_w( joint.orient );
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| 85 | m_joints.push_back( joint );
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| 86 | next_line( sstream );
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| 87 | }
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| 88 | discard( sstream, "}" );
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| 89 | }
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| 90 | else if ( command == "mesh" )
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| 91 | {
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| 92 | // TODO : efficiency dammit
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| 93 | md5_mesh mesh;
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| 94 | int num_verts, num_tris, num_weights;
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| 95 |
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| 96 | discard( sstream, "{" );
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| 97 | sstream >> command;
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| 98 | while ( command != "}" )
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| 99 | {
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| 100 | if ( command == "shader" )
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| 101 | {
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| 102 | sstream >> mesh.shader;
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| 103 | remove_quotes( mesh.shader );
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| 104 | // texturePath.replace_extension( ".tga" );
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| 105 | next_line( sstream );
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| 106 | }
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| 107 | else if ( command == "numverts")
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| 108 | {
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| 109 | sstream >> num_verts;
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| 110 | next_line( sstream );
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| 111 | for ( int i = 0; i < num_verts; ++i )
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| 112 | {
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| 113 | md5_vertex vert;
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| 114 | std::string ignore;
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| 115 | discard( sstream, "vert" );
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| 116 | sstream >> ignore;
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| 117 | discard( sstream, "(" );
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| 118 | sstream >> vert.texcoord.x >> vert.texcoord.y;
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| 119 | discard( sstream, ")" );
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| 120 | sstream >> vert.start_weight >> vert.weight_count;
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| 121 | next_line( sstream );
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| 122 |
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| 123 | mesh.verts.push_back(vert);
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| 124 | mesh.texcoord_buffer.push_back( vert.texcoord );
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| 125 | }
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| 126 | }
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| 127 | else if ( command == "numtris" )
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| 128 | {
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| 129 | sstream >> num_tris;
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| 130 | next_line( sstream );
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| 131 | for ( int i = 0; i < num_tris; ++i )
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| 132 | {
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| 133 | md5_triangle tri;
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| 134 | std::string ignore;
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| 135 | discard( sstream, "tri" );
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| 136 | sstream >> ignore >> tri.indices[0] >> tri.indices[1] >> tri.indices[2];
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| 137 | next_line( sstream );
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| 138 |
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| 139 | mesh.tris.push_back( tri );
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| 140 | mesh.index_buffer.push_back( (uint32)tri.indices[0] );
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| 141 | mesh.index_buffer.push_back( (uint32)tri.indices[1] );
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| 142 | mesh.index_buffer.push_back( (uint32)tri.indices[2] );
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| 143 | }
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| 144 | }
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| 145 | else if ( command == "numweights" )
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| 146 | {
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| 147 | sstream >> num_weights;
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| 148 | next_line( sstream );
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| 149 | for ( int i = 0; i < num_weights; ++i )
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| 150 | {
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| 151 | md5_weight weight;
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| 152 | std::string ignore;
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| 153 | discard( sstream, "weight" );
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| 154 | sstream >> ignore >> weight.joint_id >> weight.bias;
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| 155 | discard( sstream, "(" );
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| 156 | sstream >> weight.pos.x >> weight.pos.y >> weight.pos.z;
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| 157 | discard( sstream, ")" );
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| 158 | next_line( sstream );
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| 159 | mesh.weights.push_back(weight);
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| 160 | }
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| 161 | }
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| 162 | else
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| 163 | {
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| 164 | next_line( sstream );
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| 165 | }
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| 166 |
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| 167 | sstream >> command;
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| 168 | }
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| 169 |
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| 170 | prepare_mesh( mesh );
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| 171 | prepare_normals( mesh );
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| 172 |
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| 173 | m_meshes.push_back(mesh);
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| 174 | }
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| 175 | sstream >> command;
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| 176 | }
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| 177 |
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| 178 | assert( m_joints.size() == m_num_joints );
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| 179 | assert( m_meshes.size() == m_num_meshes );
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| 180 | return true;
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| 181 | }
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| 182 |
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| 183 | bool md5_loader::prepare_mesh( md5_mesh& mesh )
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| 184 | {
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| 185 | mesh.position_buffer.clear();
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| 186 | mesh.texcoord_buffer.clear();
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| 187 |
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| 188 | for ( uint32 i = 0; i < mesh.verts.size(); ++i )
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| 189 | {
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| 190 | md5_vertex& vert = mesh.verts[i];
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| 191 |
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| 192 | vert.position = glm::vec3(0);
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| 193 | vert.normal = glm::vec3(0);
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| 194 | vert.tangent = glm::vec3(0);
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| 195 |
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| 196 | for ( int j = 0; j < vert.weight_count; ++j )
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| 197 | {
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| 198 | md5_weight& weight = mesh.weights[vert.start_weight + j];
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| 199 | md5_joint& joint = m_joints[weight.joint_id];
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| 200 |
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| 201 | glm::vec3 rot_pos = joint.orient * weight.pos;
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| 202 |
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| 203 | vert.position += ( joint.pos + rot_pos ) * weight.bias;
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| 204 | }
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| 205 |
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| 206 | mesh.position_buffer.push_back(vert.position);
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| 207 | mesh.texcoord_buffer.push_back(vert.texcoord);
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| 208 | }
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| 209 |
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| 210 | return true;
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| 211 | }
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| 212 |
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| 213 | bool md5_loader::prepare_normals( md5_mesh& mesh )
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| 214 | {
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| 215 | mesh.normal_buffer.clear();
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| 216 |
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| 217 | for ( unsigned int i = 0; i < mesh.tris.size(); ++i )
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| 218 | {
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| 219 | const md5_triangle& tri = mesh.tris[i];
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| 220 | glm::vec3 v1 = mesh.verts[ tri.indices[0] ].position;
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| 221 | glm::vec3 v2 = mesh.verts[ tri.indices[1] ].position;
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| 222 | glm::vec3 v3 = mesh.verts[ tri.indices[2] ].position;
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| 223 | glm::vec3 xyz1 = v3 - v1;
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| 224 | glm::vec3 xyz2 = v2 - v1;
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| 225 |
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| 226 | glm::vec3 normal = glm::cross( xyz1, xyz2 );
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| 227 |
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| 228 | mesh.verts[ tri.indices[0] ].normal += normal;
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| 229 | mesh.verts[ tri.indices[1] ].normal += normal;
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| 230 | mesh.verts[ tri.indices[2] ].normal += normal;
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| 231 |
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| 232 | const vec2& w1 = mesh.verts[ tri.indices[0] ].texcoord;
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| 233 | const vec2& w2 = mesh.verts[ tri.indices[1] ].texcoord;
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| 234 | const vec2& w3 = mesh.verts[ tri.indices[2] ].texcoord;
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| 235 |
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| 236 | vec2 st1 = w3 - w1;
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| 237 | vec2 st2 = w2 - w1;
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| 238 |
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| 239 | float coef = 1.0f / (st1.x * st2.y - st2.x * st1.y);
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| 240 |
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| 241 | vec3 tangent = (( xyz1 * st2.y ) - ( xyz2 * st1.y )) * coef;
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| 242 |
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| 243 | mesh.verts[ tri.indices[0] ].tangent += tangent;
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| 244 | mesh.verts[ tri.indices[1] ].tangent += tangent;
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| 245 | mesh.verts[ tri.indices[2] ].tangent += tangent;
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| 246 | }
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| 247 |
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| 248 | for ( unsigned int i = 0; i < mesh.verts.size(); ++i )
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| 249 | {
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| 250 | md5_vertex& vert = mesh.verts[i];
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| 251 |
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| 252 | glm::vec3 normal = glm::normalize( vert.normal );
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| 253 | glm::vec3 tangent = glm::normalize( vert.tangent );
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| 254 | mesh.normal_buffer.push_back( normal );
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| 255 | mesh.tangent_buffer.push_back( tangent );
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| 256 |
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| 257 | vert.normal = glm::vec3(0);
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| 258 | vert.tangent = glm::vec3(0);
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| 259 |
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| 260 | for ( int j = 0; j < vert.weight_count; ++j )
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| 261 | {
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| 262 | const md5_weight& weight = mesh.weights[vert.start_weight + j];
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| 263 | const md5_joint& joint = m_joints[weight.joint_id];
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| 264 | vert.normal += ( normal * joint.orient ) * weight.bias;
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| 265 | vert.tangent += ( tangent * joint.orient ) * weight.bias;
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| 266 | }
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| 267 | }
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| 268 |
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| 269 | return true;
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| 270 | }
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| 271 |
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| 272 | mesh* md5_loader::release_mesh()
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| 273 | {
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| 274 | mesh* m = new mesh();
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| 275 | auto position = m->add_attribute< vec3 >( "nv_position" );
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| 276 | auto normal = m->add_attribute< vec3 >( "nv_normal" );
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| 277 | auto texcoord = m->add_attribute< vec2 >( "nv_texcoord" );
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| 278 | auto tangent = m->add_attribute< vec3 >( "nv_tangent" );
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| 279 | auto indices = m->add_indices< uint32 >();
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| 280 |
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| 281 | position->get().assign( m_meshes[0].position_buffer.begin(), m_meshes[0].position_buffer.end() );
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| 282 | normal ->get().assign( m_meshes[0].normal_buffer.begin(), m_meshes[0].normal_buffer.end() );
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| 283 | texcoord->get().assign( m_meshes[0].texcoord_buffer.begin(), m_meshes[0].texcoord_buffer.end() );
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| 284 | tangent ->get().assign( m_meshes[0].tangent_buffer.begin(), m_meshes[0].tangent_buffer.end() );
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| 285 | indices ->get().assign( m_meshes[0].index_buffer.begin(), m_meshes[0].index_buffer.end() );
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| 286 |
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| 287 | m_size = m_meshes[0].index_buffer.size();
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| 288 | return m;
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| 289 | }
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| 290 |
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| 291 | md5_animation::md5_animation()
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| 292 | : m_md5_version( 0 )
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| 293 | , m_num_frames( 0 )
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| 294 | , m_num_joints( 0 )
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| 295 | , m_frame_rate( 0 )
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| 296 | , m_num_animated_components( 0 )
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| 297 | , m_anim_duration( 0 )
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| 298 | , m_frame_duration( 0 )
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| 299 | , m_anim_time( 0 )
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| 300 | {
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| 301 |
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| 302 | }
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| 303 |
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| 304 | md5_animation::~md5_animation()
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| 305 | {
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| 306 |
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| 307 | }
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| 308 |
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| 309 | bool md5_animation::load_animation( stream& source )
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| 310 | {
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| 311 | m_joint_infos.clear();
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| 312 | m_bounds.clear();
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| 313 | m_base_frames.clear();
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| 314 | m_frames.clear();
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| 315 | m_animated_skeleton.joints.clear();
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| 316 | m_num_frames = 0;
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| 317 |
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| 318 | std_stream sstream( &source );
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| 319 | std::string command;
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| 320 |
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| 321 | sstream >> command;
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| 322 | while ( !sstream.eof() )
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| 323 | {
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| 324 | if ( command == "MD5Version" )
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| 325 | {
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| 326 | sstream >> m_md5_version;
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| 327 | assert( m_md5_version == 10 );
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| 328 | }
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| 329 | else if ( command == "commandline" )
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| 330 | {
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| 331 | next_line( sstream );
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| 332 | }
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| 333 | else if ( command == "numFrames" )
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| 334 | {
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| 335 | sstream >> m_num_frames;
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| 336 | next_line( sstream );
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| 337 | }
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| 338 | else if ( command == "numJoints" )
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| 339 | {
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| 340 | sstream >> m_num_joints;
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| 341 | next_line( sstream );
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| 342 | }
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| 343 | else if ( command == "frameRate" )
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| 344 | {
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| 345 | sstream >> m_frame_rate;
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| 346 | next_line( sstream );
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| 347 | }
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| 348 | else if ( command == "numAnimatedComponents" )
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| 349 | {
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| 350 | sstream >> m_num_animated_components;
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| 351 | next_line( sstream );
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| 352 | }
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| 353 | else if ( command == "hierarchy" )
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| 354 | {
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| 355 | discard( sstream, "{" );
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| 356 | for ( int i = 0; i < m_num_joints; ++i )
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| 357 | {
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| 358 | md5_joint_info joint;
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| 359 | sstream >> joint.name >> joint.parent_id >> joint.flags >> joint.start_index;
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| 360 | remove_quotes( joint.name );
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| 361 | m_joint_infos.push_back( joint );
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| 362 | next_line( sstream );
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| 363 | }
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| 364 | discard( sstream, "}" );
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| 365 | }
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| 366 | else if ( command == "bounds" )
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| 367 | {
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| 368 | discard( sstream, "{" );
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| 369 | next_line( sstream );
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| 370 | for ( int i = 0; i < m_num_frames; ++i )
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| 371 | {
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| 372 | md5_bound bound;
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| 373 | discard( sstream, "(" );
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| 374 | sstream >> bound.min.x >> bound.min.y >> bound.min.z;
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| 375 | discard( sstream, ")" );
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| 376 | discard( sstream, "(" );
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| 377 | sstream >> bound.max.x >> bound.max.y >> bound.max.z;
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| 378 |
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| 379 | m_bounds.push_back( bound );
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| 380 |
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| 381 | next_line( sstream );
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| 382 | }
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| 383 |
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| 384 | discard( sstream, "}" );
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| 385 | next_line( sstream );
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| 386 | }
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| 387 | else if ( command == "baseframe" )
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| 388 | {
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| 389 | discard( sstream, "{" );
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| 390 | next_line( sstream );
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| 391 |
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| 392 | for ( int i = 0; i < m_num_joints; ++i )
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| 393 | {
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| 394 | md5_base_frame base_frame;
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| 395 | discard( sstream, "(" );
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| 396 | sstream >> base_frame.pos.x >> base_frame.pos.y >> base_frame.pos.z;
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| 397 | discard( sstream, ")" );
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| 398 | discard( sstream, "(" );
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| 399 | sstream >> base_frame.orient.x >> base_frame.orient.y >> base_frame.orient.z;
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| 400 | next_line( sstream );
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| 401 |
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| 402 | m_base_frames.push_back( base_frame );
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| 403 | }
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| 404 | discard( sstream, "}" );
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| 405 | next_line( sstream );
|
|---|
| 406 | }
|
|---|
| 407 | else if ( command == "frame" )
|
|---|
| 408 | {
|
|---|
| 409 | md5_frame_data frame;
|
|---|
| 410 | sstream >> frame.frame_id;
|
|---|
| 411 | discard( sstream, "{" );
|
|---|
| 412 | next_line( sstream );
|
|---|
| 413 |
|
|---|
| 414 | for ( int i = 0; i < m_num_animated_components; ++i )
|
|---|
| 415 | {
|
|---|
| 416 | float frameData;
|
|---|
| 417 | sstream >> frameData;
|
|---|
| 418 | frame.frame_data.push_back(frameData);
|
|---|
| 419 | }
|
|---|
| 420 |
|
|---|
| 421 | m_frames.push_back(frame);
|
|---|
| 422 |
|
|---|
| 423 | build_frame_skeleton( m_skeletons, m_joint_infos, m_base_frames, frame );
|
|---|
| 424 |
|
|---|
| 425 | discard( sstream, "}" );
|
|---|
| 426 | next_line( sstream );
|
|---|
| 427 | }
|
|---|
| 428 |
|
|---|
| 429 | sstream >> command;
|
|---|
| 430 | }
|
|---|
| 431 |
|
|---|
| 432 | m_animated_skeleton.joints.assign( m_num_joints, md5_skeleton_joint() );
|
|---|
| 433 |
|
|---|
| 434 | m_frame_duration = 1.0f / (float)m_frame_rate;
|
|---|
| 435 | m_anim_duration = ( m_frame_duration * (float)m_num_frames );
|
|---|
| 436 | m_anim_time = 0.0f;
|
|---|
| 437 |
|
|---|
| 438 | assert( m_joint_infos.size() == (size_t)m_num_joints );
|
|---|
| 439 | assert( m_bounds.size() == (size_t)m_num_frames );
|
|---|
| 440 | assert( m_base_frames.size() == (size_t)m_num_joints );
|
|---|
| 441 | assert( m_frames.size() == (size_t)m_num_frames );
|
|---|
| 442 | assert( m_skeletons.size() == (size_t)m_num_frames );
|
|---|
| 443 |
|
|---|
| 444 | return true;
|
|---|
| 445 | }
|
|---|
| 446 |
|
|---|
| 447 | void md5_animation::update( float delta_time )
|
|---|
| 448 | {
|
|---|
| 449 | if ( m_num_frames < 1 ) return;
|
|---|
| 450 |
|
|---|
| 451 | m_anim_time += delta_time;
|
|---|
| 452 |
|
|---|
| 453 | while ( m_anim_time > m_anim_duration ) m_anim_time -= m_anim_duration;
|
|---|
| 454 | while ( m_anim_time < 0.0f ) m_anim_time += m_anim_duration;
|
|---|
| 455 |
|
|---|
| 456 | float frame_num = m_anim_time * (float)m_frame_rate;
|
|---|
| 457 | int frame0 = (int)floorf( frame_num );
|
|---|
| 458 | int frame1 = (int)ceilf( frame_num );
|
|---|
| 459 | frame0 = frame0 % m_num_frames;
|
|---|
| 460 | frame1 = frame1 % m_num_frames;
|
|---|
| 461 |
|
|---|
| 462 | float interpolate = fmodf( m_anim_time, m_frame_duration ) / m_frame_duration;
|
|---|
| 463 |
|
|---|
| 464 | interpolate_skeletons( m_animated_skeleton, m_skeletons[frame0], m_skeletons[frame1], interpolate );
|
|---|
| 465 | }
|
|---|
| 466 |
|
|---|
| 467 | void md5_animation::build_frame_skeleton( md5_frame_skeleton_list& skeletons, const md5_joint_info_list& joint_infos, const md5_base_frame_list& base_frames, const md5_frame_data& frame_data )
|
|---|
| 468 | {
|
|---|
| 469 | md5_frame_skeleton skeleton;
|
|---|
| 470 |
|
|---|
| 471 | for ( unsigned int i = 0; i < joint_infos.size(); ++i )
|
|---|
| 472 | {
|
|---|
| 473 | unsigned int j = 0;
|
|---|
| 474 |
|
|---|
| 475 | const md5_joint_info& jinfo = joint_infos[i];
|
|---|
| 476 | md5_skeleton_joint animated_joint = base_frames[i];
|
|---|
| 477 |
|
|---|
| 478 | animated_joint.parent = jinfo.parent_id;
|
|---|
| 479 |
|
|---|
| 480 | if ( jinfo.flags & 1 ) animated_joint.pos.x = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 481 | if ( jinfo.flags & 2 ) animated_joint.pos.y = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 482 | if ( jinfo.flags & 4 ) animated_joint.pos.z = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 483 | if ( jinfo.flags & 8 ) animated_joint.orient.x = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 484 | if ( jinfo.flags & 16 ) animated_joint.orient.y = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 485 | if ( jinfo.flags & 32 ) animated_joint.orient.z = frame_data.frame_data[ jinfo.start_index + j++ ];
|
|---|
| 486 |
|
|---|
| 487 | unit_quat_w( animated_joint.orient );
|
|---|
| 488 |
|
|---|
| 489 | if ( animated_joint.parent >= 0 ) // Has a parent joint
|
|---|
| 490 | {
|
|---|
| 491 | md5_skeleton_joint& pjoint = skeleton.joints[animated_joint.parent];
|
|---|
| 492 | glm::vec3 rot_pos = pjoint.orient * animated_joint.pos;
|
|---|
| 493 |
|
|---|
| 494 | animated_joint.pos = pjoint.pos + rot_pos;
|
|---|
| 495 | animated_joint.orient = pjoint.orient * animated_joint.orient;
|
|---|
| 496 |
|
|---|
| 497 | animated_joint.orient = glm::normalize( animated_joint.orient );
|
|---|
| 498 | }
|
|---|
| 499 |
|
|---|
| 500 | skeleton.joints.push_back( animated_joint );
|
|---|
| 501 | }
|
|---|
| 502 |
|
|---|
| 503 | skeletons.push_back( skeleton );
|
|---|
| 504 | }
|
|---|
| 505 |
|
|---|
| 506 | void md5_animation::interpolate_skeletons( md5_frame_skeleton& final_skeleton, const md5_frame_skeleton& skeleton0, const md5_frame_skeleton& skeleton1, float interpolate )
|
|---|
| 507 | {
|
|---|
| 508 | for ( int i = 0; i < m_num_joints; ++i )
|
|---|
| 509 | {
|
|---|
| 510 | md5_skeleton_joint& final_joint = final_skeleton.joints[i];
|
|---|
| 511 | const md5_skeleton_joint& joint0 = skeleton0.joints[i];
|
|---|
| 512 | const md5_skeleton_joint& joint1 = skeleton1.joints[i];
|
|---|
| 513 |
|
|---|
| 514 | final_joint.parent = joint0.parent;
|
|---|
| 515 |
|
|---|
| 516 | final_joint.orient = glm::slerp( joint0.orient, joint1.orient, interpolate );
|
|---|
| 517 | final_joint.pos = glm::mix( joint0.pos, joint1.pos, interpolate );
|
|---|
| 518 | }
|
|---|
| 519 | }
|
|---|
| 520 |
|
|---|
| 521 | bool md5_loader::check_animation( const md5_animation& animation ) const
|
|---|
| 522 | {
|
|---|
| 523 | if ( m_num_joints != animation.get_num_joints() )
|
|---|
| 524 | {
|
|---|
| 525 | return false;
|
|---|
| 526 | }
|
|---|
| 527 |
|
|---|
| 528 | for ( uint32 i = 0; i < m_joints.size(); ++i )
|
|---|
| 529 | {
|
|---|
| 530 | const md5_joint& mjoint = m_joints[i];
|
|---|
| 531 | const md5_animation::md5_joint_info& ajoint = animation.get_joint_info( i );
|
|---|
| 532 |
|
|---|
| 533 | if ( mjoint.name != ajoint.name || mjoint.parent_id != ajoint.parent_id )
|
|---|
| 534 | {
|
|---|
| 535 | return false;
|
|---|
| 536 | }
|
|---|
| 537 | }
|
|---|
| 538 |
|
|---|
| 539 | return true;
|
|---|
| 540 | }
|
|---|
| 541 |
|
|---|
| 542 | bool md5_loader::prepare_animated_mesh( md5_mesh& mesh, const md5_animation::md5_frame_skeleton& skel )
|
|---|
| 543 | {
|
|---|
| 544 | for ( unsigned int i = 0; i < mesh.verts.size(); ++i )
|
|---|
| 545 | {
|
|---|
| 546 | const md5_vertex& vert = mesh.verts[i];
|
|---|
| 547 | glm::vec3& pos = mesh.position_buffer[i];
|
|---|
| 548 | glm::vec3& normal = mesh.normal_buffer[i];
|
|---|
| 549 | glm::vec3& tangent = mesh.tangent_buffer[i];
|
|---|
| 550 |
|
|---|
| 551 | pos = glm::vec3(0);
|
|---|
| 552 | normal = glm::vec3(0);
|
|---|
| 553 | tangent = glm::vec3(0);
|
|---|
| 554 |
|
|---|
| 555 | for ( int j = 0; j < vert.weight_count; ++j )
|
|---|
| 556 | {
|
|---|
| 557 | const md5_weight& weight = mesh.weights[vert.start_weight + j];
|
|---|
| 558 | const md5_animation::md5_skeleton_joint& joint = skel.joints[weight.joint_id];
|
|---|
| 559 |
|
|---|
| 560 | glm::vec3 rot_pos = joint.orient * weight.pos;
|
|---|
| 561 | pos += ( joint.pos + rot_pos ) * weight.bias;
|
|---|
| 562 |
|
|---|
| 563 | normal += ( joint.orient * vert.normal ) * weight.bias;
|
|---|
| 564 | tangent += ( joint.orient * vert.tangent ) * weight.bias;
|
|---|
| 565 | }
|
|---|
| 566 | }
|
|---|
| 567 | return true;
|
|---|
| 568 | }
|
|---|
| 569 |
|
|---|
| 570 | void md5_loader::apply( const md5_animation& animation )
|
|---|
| 571 | {
|
|---|
| 572 | const md5_animation::md5_frame_skeleton& skeleton = animation.get_skeleton();
|
|---|
| 573 |
|
|---|
| 574 | for ( unsigned int i = 0; i < m_meshes.size(); ++i )
|
|---|
| 575 | {
|
|---|
| 576 | prepare_animated_mesh( m_meshes[i], skeleton );
|
|---|
| 577 | }
|
|---|
| 578 | }
|
|---|
| 579 |
|
|---|
| 580 | size_t nv::md5_loader::get_size()
|
|---|
| 581 | {
|
|---|
| 582 | return m_size;
|
|---|
| 583 | }
|
|---|
