| 1 | #include "particles.h"
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| 2 |
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| 3 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 4 | namespace OgreMayaExporter
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| 5 | {
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| 6 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 7 | const float FP_2PI = 6.28318531f;
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| 8 | static float FP_MINDELTA = 0.005f;
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| 9 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 10 | inline float ToRadians( float fD ) { return fD * ( FP_2PI / 360.f ); }
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| 11 | inline float ToDegrees( float fR ) { return fR * ( 360.f / FP_2PI ); }
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| 12 | template<class T> void DropSame( const std::vector<T> &values, int nBeginTime, TKeyTrack<T> *pRes );
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| 13 | template<class T> void MakeLinearSpline( const std::vector<T> &values, int nBeginTime, float fEpsilon, TKeyTrack<T> *pRes );
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| 14 | template<class T> void writeTrackToXML( std::ofstream &outStream, const TKeyTrack<T> &dataTrack, const std::string &name );
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| 15 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 16 | // Particles
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| 17 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 18 | Particles::Particles():
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| 19 | nFrames(0)
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| 20 | {
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| 21 | }
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| 22 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 23 | Particles::~Particles()
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| 24 | {
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| 25 | clear();
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| 26 | }
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| 27 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 28 | MStatus Particles::load( MDagPath& dagPath, ParamList& params )
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| 29 | {
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| 30 | int nMaxFrame, nMinFrame;
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| 31 | MGlobal::executeCommand( "playbackOptions -q -max", nMaxFrame );
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| 32 | MGlobal::executeCommand( "playbackOptions -q -min", nMinFrame );
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| 33 | if ( nMinFrame > 0 )
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| 34 | nMinFrame = 0;
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| 35 |
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| 36 | for ( int nFrame = nMinFrame; nFrame <= nMaxFrame; ++nFrame )
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| 37 | ExportFrame( dagPath, nFrame );
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| 38 |
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| 39 | FinalizeData( nMinFrame, nMaxFrame );
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| 40 | return MS::kSuccess;
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| 41 | }
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| 42 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 43 | MStatus Particles::writeToXML( ParamList& params )
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| 44 | {
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| 45 | params.outParticles << "<particles frames=\"" << nFrames << "\" tracks=\"" << particleTracks.size() << "\" >\n";
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| 46 | for ( uint nTemp = 0; nTemp < particleTracks.size(); ++nTemp )
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| 47 | {
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| 48 | const SParticle &particle = particleTracks[nTemp];
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| 49 | params.outParticles << "\t<particle startFrame=\"" << particle.nStartTime << "\" endFrame=\"" << particle.nEndTime << "\" >\n";
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| 50 | writeTrackToXML( params.outParticles, particle.pos, "position" );
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| 51 | writeTrackToXML( params.outParticles, particle.rotation, "rotation" );
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| 52 | writeTrackToXML( params.outParticles, particle.scale, "scale" );
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| 53 | writeTrackToXML( params.outParticles, particle.color, "color" );
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| 54 | writeTrackToXML( params.outParticles, particle.sprite, "sprite" );
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| 55 | params.outParticles << "\t</particle>\n";
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| 56 | }
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| 57 | params.outParticles << "</particles>\n";
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| 58 | return MS::kSuccess;
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| 59 | }
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| 60 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 61 | void Particles::clear()
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| 62 | {
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| 63 | }
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| 64 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 65 | MStatus Particles::ExportFrame( MDagPath &dagPath, int nFrame )
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| 66 | {
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| 67 | MGlobal::viewFrame( nFrame );
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| 68 |
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| 69 | MStatus retStatus;
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| 70 | MFnDagNode dagNode( dagPath );
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| 71 | ////
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| 72 | int nParticles = 0;
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| 73 | MPlug countPlug = dagNode.findPlug( MString( "count" ), &retStatus );
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| 74 | retStatus = countPlug.getValue( nParticles );
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| 75 | if ( nParticles <= 0 )
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| 76 | return MS::kFailure;
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| 77 | ////
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| 78 | std::vector<int> idIndex( nParticles );
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| 79 | std::vector<int> sortedId( nParticles );
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| 80 | std::vector<SParticleData> particlesFrame( nParticles );
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| 81 | ////
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| 82 | MObject tempObj;
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| 83 | MPlug mappingPlug = dagNode.findPlug( MString( "idMapping" ), &retStatus );
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| 84 | ////
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| 85 | MPlug idPlug = mappingPlug.child( 0 );
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| 86 | retStatus = idPlug.getValue( tempObj );
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| 87 | MFnIntArrayData sSortedIDArray( tempObj, &retStatus );
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| 88 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 89 | sortedId[nTemp] = sSortedIDArray[nTemp];
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| 90 | ////
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| 91 | MPlug indexPlug = mappingPlug.child( 1 );
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| 92 | retStatus = indexPlug.getValue( tempObj );
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| 93 | MFnIntArrayData idIndexArray( tempObj, &retStatus );
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| 94 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 95 | idIndex[nTemp] = idIndexArray[nTemp];
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| 96 | //// Position
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| 97 | MPlug posPlug = dagNode.findPlug( MString( "worldPosition" ), &retStatus );
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| 98 | retStatus = posPlug.getValue( tempObj );
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| 99 | MFnVectorArrayData posData( tempObj, &retStatus );
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| 100 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 101 | {
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| 102 | SParticleData &particle = particlesFrame[nTemp];
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| 103 | particle.nFrame = nFrame;
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| 104 | particle.pos.x = (float)posData[idIndex[nTemp]].x;
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| 105 | particle.pos.y = (float)posData[idIndex[nTemp]].y;
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| 106 | particle.pos.z = (float)posData[idIndex[nTemp]].z;
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| 107 | }
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| 108 | //// Rotation
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| 109 | MPlug rotPlug = dagNode.findPlug( MString( "spriteTwistPP" ), &retStatus );
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| 110 | if ( retStatus == MS::kSuccess )
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| 111 | {
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| 112 | retStatus = rotPlug.getValue( tempObj );
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| 113 | MFnDoubleArrayData rotPlug( tempObj, &retStatus );
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| 114 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 115 | particlesFrame[nTemp].fRotation = ToRadians( (float)rotPlug[idIndex[nTemp]] );
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| 116 | }
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| 117 | //// ScaleX
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| 118 | MPlug scaleXPlug = dagNode.findPlug( MString( "spriteScaleXPP" ), &retStatus );
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| 119 | if ( retStatus == MS::kSuccess )
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| 120 | {
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| 121 | retStatus = scaleXPlug.getValue( tempObj );
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| 122 | MFnDoubleArrayData scaleX( tempObj, &retStatus );
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| 123 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 124 | particlesFrame[nTemp].scale.x = float( scaleX[idIndex[nTemp]] );
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| 125 | }
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| 126 | //// ScaleY
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| 127 | MPlug scaleYPlug = dagNode.findPlug( MString( "spriteScaleYPP" ), &retStatus );
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| 128 | if ( retStatus == MS::kSuccess )
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| 129 | {
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| 130 | retStatus = scaleYPlug.getValue( tempObj );
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| 131 | MFnDoubleArrayData scaleY( tempObj, &retStatus );
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| 132 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 133 | particlesFrame[nTemp].scale.y = float( scaleY[idIndex[nTemp]] );
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| 134 | }
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| 135 | //// Sprite
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| 136 | MPlug spritePlug = dagNode.findPlug( MString( "spriteNumPP" ), &retStatus );
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| 137 | if ( retStatus == MS::kSuccess )
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| 138 | {
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| 139 | retStatus = spritePlug.getValue( tempObj );
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| 140 | MFnDoubleArrayData sprite( tempObj, &retStatus );
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| 141 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 142 | particlesFrame[nTemp].nSprite = int( sprite[idIndex[nTemp]] - 1 );
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| 143 | }
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| 144 | //// Color
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| 145 | MPlug colorPlug = dagNode.findPlug( MString( "rgbPP" ), &retStatus );
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| 146 | if ( retStatus == MS::kSuccess )
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| 147 | {
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| 148 | retStatus = colorPlug.getValue( tempObj );
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| 149 | MFnVectorArrayData rgbData( tempObj, &retStatus );
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| 150 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 151 | {
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| 152 | particlesFrame[nTemp].color.r = float( rgbData[idIndex[nTemp]].x );
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| 153 | particlesFrame[nTemp].color.g = float( rgbData[idIndex[nTemp]].y );
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| 154 | particlesFrame[nTemp].color.b = float( rgbData[idIndex[nTemp]].z );
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| 155 | }
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| 156 | }
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| 157 | //// Opacity
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| 158 | MPlug alphaPlug = dagNode.findPlug( MString( "opacityPP" ), &retStatus );
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| 159 | if ( retStatus == MS::kSuccess )
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| 160 | {
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| 161 | retStatus = alphaPlug.getValue( tempObj );
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| 162 | MFnDoubleArrayData alphaData( tempObj, &retStatus );
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| 163 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 164 | particlesFrame[nTemp].color.a = float( alphaData[idIndex[nTemp]] );
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| 165 | }
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| 166 |
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| 167 | for ( int nTemp = 0; nTemp < nParticles; ++nTemp )
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| 168 | data[sortedId[nTemp]].push_back( particlesFrame[nTemp] );
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| 169 |
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| 170 | return MS::kSuccess;
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| 171 | }
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| 172 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 173 | MStatus Particles::FinalizeData( int nMinFrame, int nMaxFrame )
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| 174 | {
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| 175 | nFrames = nMaxFrame - nMinFrame + 1;
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| 176 | particleTracks.resize( data.size() );
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| 177 |
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| 178 | int nTemp = 0;
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| 179 | for ( CParticlesData::const_iterator iTemp = data.begin(); iTemp != data.end(); ++iTemp, ++nTemp )
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| 180 | {
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| 181 | SParticle &particle = particleTracks[nTemp];
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| 182 | ////
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| 183 | const CParticlesTrack &particlesTrack = iTemp->second;
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| 184 | int nEndFrame = particlesTrack.back().nFrame;
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| 185 | int nStartFrame = particlesTrack.front().nFrame;
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| 186 | int nFrames = nEndFrame - nStartFrame + 1;
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| 187 | ////
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| 188 | if ( nFrames != particlesTrack.size() )
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| 189 | {
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| 190 | std::cout << "ERROR: particle dosn't exist in some frames (unsupported)!\n";
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| 191 | return MS::kFailure;
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| 192 | }
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| 193 | ////
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| 194 | int nBeginTime = nStartFrame;
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| 195 | particle.nEndTime = nEndFrame;
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| 196 | particle.nStartTime = nStartFrame;
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| 197 | ////
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| 198 | std::vector<SPos> tmpPos( nFrames );
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| 199 | for ( int nTemp = 0; nTemp < nFrames; ++nTemp )
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| 200 | tmpPos[nTemp] = particlesTrack[nTemp].pos;
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| 201 | MakeLinearSpline( tmpPos, nBeginTime, FP_MINDELTA, &particle.pos );
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| 202 | ////
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| 203 | std::vector<float> tmpRot( nFrames );
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| 204 | for ( int nTemp = 0; nTemp < nFrames; ++nTemp )
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| 205 | tmpRot[nTemp] = particlesTrack[nTemp].fRotation;
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| 206 | MakeLinearSpline( tmpRot, nBeginTime, FP_MINDELTA, &particle.rotation );
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| 207 | ////
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| 208 | std::vector<SScale> tmpScale( nFrames );
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| 209 | for ( int nTemp = 0; nTemp < nFrames; ++nTemp )
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| 210 | tmpScale[nTemp] = particlesTrack[nTemp].scale;
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| 211 | MakeLinearSpline( tmpScale, nBeginTime, FP_MINDELTA, &particle.scale );
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| 212 | ////
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| 213 | std::vector<SColor> tmpColor( nFrames );
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| 214 | for ( int nTemp = 0; nTemp < nFrames; ++nTemp )
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| 215 | tmpColor[nTemp] = particlesTrack[nTemp].color;
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| 216 | MakeLinearSpline( tmpColor, nBeginTime, FP_MINDELTA, &particle.color );
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| 217 | ////
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| 218 | std::vector<int> tmpSprite( nFrames );
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| 219 | for ( int nTemp = 0; nTemp < nFrames; ++nTemp )
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| 220 | tmpSprite[nTemp] = particlesTrack[nTemp].nSprite;
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| 221 | DropSame( tmpSprite, nBeginTime, &particle.sprite );
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| 222 | }
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| 223 |
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| 224 | return MS::kSuccess;
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| 225 | }
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| 226 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 227 | template<class T>
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| 228 | bool CanDropValue( const T &value, const T &prevVal, const T &nextVal, int nDelta, int nRange, float fEpsilon )
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| 229 | {
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| 230 | T resVal;
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| 231 | float fCoeff = float( nDelta ) / nRange;
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| 232 | Interpolate( prevVal, nextVal, fCoeff, &resVal );
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| 233 | if ( fabs( resVal - value ) < fEpsilon )
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| 234 | return true;
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| 235 | ////
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| 236 | return false;
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| 237 | }
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| 238 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 239 | template<class T>
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| 240 | void MakeLinearSpline( const std::vector<T> &values, int nBeginTime, float fEpsilon, TKeyTrack<T> *pRes )
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| 241 | {
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| 242 | if ( values.size() == 0 )
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| 243 | return;
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| 244 | ////
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| 245 | TKey<T> startKey;
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| 246 | startKey.nTime = nBeginTime;
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| 247 | startKey.value = values.front();
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| 248 | pRes->keys.push_back( startKey );
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| 249 | if ( values.size() == 1 )
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| 250 | return;
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| 251 | ////
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| 252 | uint nIndex = 0;
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| 253 | uint nPrevIndex = 0;
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| 254 | while( nIndex < values.size() - 1 )
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| 255 | {
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| 256 | if ( !CanDropValue<T>( values[nIndex], values[nPrevIndex], values[nIndex + 1], nIndex - nPrevIndex, nIndex - nPrevIndex + 1, fEpsilon ) )
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| 257 | {
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| 258 | nPrevIndex = nIndex;
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| 259 | TKey<T> resKey;
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| 260 | resKey.nTime = nBeginTime + nIndex;
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| 261 | resKey.value = values[nIndex];
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| 262 | pRes->keys.push_back( resKey );
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| 263 | }
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| 264 | ////
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| 265 | nIndex++;
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| 266 | }
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| 267 | ////
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| 268 | TKey<T> endKey;
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| 269 | endKey.nTime = nBeginTime + values.size() - 1;
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| 270 | endKey.value = values.back();
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| 271 | pRes->keys.push_back( endKey );
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| 272 | }
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| 273 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 274 | template<class T>
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| 275 | void DropSame( const std::vector<T> &values, int nBeginTime, TKeyTrack<T> *pRes )
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| 276 | {
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| 277 | if ( values.size() == 0 )
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| 278 | return;
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| 279 | ////
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| 280 | TKey<T> startKey;
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| 281 | startKey.nTime = nBeginTime;
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| 282 | startKey.value = values.front();
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| 283 | pRes->keys.push_back( startKey );
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| 284 | if ( values.size() == 1 )
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| 285 | return;
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| 286 | ////
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| 287 | T nCurrent = values.front();
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| 288 | TKey<T> curKey;
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| 289 | for ( uint nTemp = 1; nTemp < values.size() - 1; ++nTemp )
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| 290 | {
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| 291 | if ( values[nTemp] != nCurrent )
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| 292 | {
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| 293 | curKey.nTime = nBeginTime + nTemp;
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| 294 | curKey.value = values[nTemp];
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| 295 | pRes->keys.push_back( curKey );
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| 296 | ////
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| 297 | nCurrent = values[nTemp];
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| 298 | }
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| 299 | }
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| 300 | ////
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| 301 | TKey<T> endKey;
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| 302 | endKey.nTime = nBeginTime + values.size() - 1;
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| 303 | endKey.value = values.back();
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| 304 | pRes->keys.push_back( endKey );
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| 305 | }
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| 306 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 307 | template<class T>
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| 308 | void writeKeyToXML( std::ofstream &outStream, const TKey<T> &data )
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| 309 | {
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| 310 | outStream << "\t\t\t<key time=\"" << data.nTime << "\" value=\"" << data.value << "\"/>\n";
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| 311 | }
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| 312 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 313 | void writeKeyToXML( std::ofstream &outStream, const TKey<SPos> &data )
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| 314 | {
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| 315 | outStream << "\t\t\t<key time=\"" << data.nTime << "\" x=\"" << data.value.x << "\" y=\"" << data.value.y << "\" z=\"" << data.value.z << "\"/>\n";
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| 316 | }
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| 317 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 318 | void writeKeyToXML( std::ofstream &outStream, const TKey<SColor> &data )
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| 319 | {
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| 320 | outStream << "\t\t\t<key time=\"" << data.nTime << "\" r=\"" << data.value.x << "\" g=\"" << data.value.y << "\" b=\"" << data.value.z << "\" a=\"" << data.value.a << "\"/>\n";
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| 321 | }
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| 322 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 323 | void writeKeyToXML( std::ofstream &outStream, const TKey<SScale> &data )
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| 324 | {
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| 325 | outStream << "\t\t\t<key time=\"" << data.nTime << "\" x=\"" << data.value.x << "\" y=\"" << data.value.y << "\"/>\n";
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| 326 | }
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| 327 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 328 | template<class T>
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| 329 | void writeTrackToXML( std::ofstream &outStream, const TKeyTrack<T> &dataTrack, const std::string &name )
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| 330 | {
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| 331 | outStream << "\t\t<" << name.c_str() << " keys=\"" << dataTrack.keys.size() << "\" >\n";
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| 332 | for ( uint nTemp = 0; nTemp < dataTrack.keys.size(); ++nTemp )
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| 333 | writeKeyToXML( outStream, dataTrack.keys[nTemp] );
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| 334 | outStream << "\t\t</" << name.c_str() << ">\n";
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| 335 | }
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| 336 | ////////////////////////////////////////////////////////////////////////////////////////////////////
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| 337 | } // NAMESPACE
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| 338 | //////////////////////////////////////////////////////////////////////////////////////////////////// |
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