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annotate CollidoscopeApp/include/Wave.h @ 2:dd889fff8423

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added some comments
author Fiore Martin <f.martin@qmul.ac.uk>
date Mon, 11 Jul 2016 17:03:40 +0200
parents 02467299402e
children 7fb593d53361
rev   line source
f@0 1 #pragma once
f@0 2
f@0 3
f@0 4 #include "cinder/app/App.h"
f@0 5 #include "cinder/gl/gl.h"
f@0 6 #include "cinder/gl/Batch.h"
f@0 7
f@0 8
f@0 9 #include "Chunk.h"
f@0 10 #include "DrawInfo.h"
f@0 11
f@0 12 #ifdef USE_PARTICLES
f@0 13 #include "ParticleController.h"
f@0 14 #endif
f@0 15
f@0 16 #include "cinder/Color.h"
f@0 17 #include "cinder/PolyLine.h"
f@0 18 #include "cinder/Rand.h"
f@0 19
f@0 20 #include <vector>
f@0 21 #include <map>
f@0 22
f@0 23
f@0 24 class DrawInfo;
f@0 25 typedef int SynthID;
f@0 26
f@0 27
f@0 28 using ci::ivec2;
f@0 29 using ci::vec2;
f@0 30 using ci::Color;
f@0 31 using ci::ColorA;
f@0 32
f@0 33 struct Cursor {
f@0 34 static const int kNoPosition = -100;
f@0 35 int pos;
f@0 36 double lastUpdate;
f@0 37 };
f@0 38
f@0 39
f@0 40 class Wave
f@0 41 {
f@0 42 friend class ParticleController;
f@0 43
f@0 44 public:
f@0 45
f@0 46 class Selection {
f@0 47
f@0 48 public:
f@0 49
f@0 50 Selection( Wave * w, Color color );
f@0 51
f@0 52 void setStart( size_t start );
f@0 53
f@0 54 void setSize( size_t size );
f@0 55
f@0 56 void inline setParticleSpread( float spread ){
f@0 57 mParticleSpread = spread;
f@0 58 }
f@0 59
f@0 60 size_t getStart(void) const { return mSelectionStart; }
f@0 61
f@0 62 size_t getEnd(void) const { return mSelectionEnd; }
f@0 63
f@0 64 size_t inline getSize(void) const {
f@0 65 if (mNull)
f@0 66 return 0;
f@0 67 else
f@0 68 return 1 + mSelectionEnd - mSelectionStart;
f@0 69 }
f@0 70
f@0 71 float inline getParticleSpread() const { return mParticleSpread; }
f@0 72
f@0 73 inline void setToNull(){
f@0 74 mParticleSpread = 1.0f;
f@0 75 mNull = true;
f@0 76 }
f@0 77
f@0 78 inline bool isNull() const{
f@0 79 return mNull;
f@0 80 }
f@0 81
f@0 82 inline const Color & getColor() const{
f@0 83 return mColor;
f@0 84 }
f@0 85
f@0 86 private:
f@0 87
f@0 88 size_t mSelectionStart;
f@0 89
f@0 90 size_t mSelectionEnd;
f@0 91
f@0 92 float mParticleSpread;
f@0 93
f@0 94 bool mNull = true;
f@0 95
f@0 96 Color mColor;
f@0 97
f@0 98 Wave * mWave;
f@0 99
f@0 100 }; // class Selection
f@0 101
f@0 102
f@0 103
f@0 104 #ifdef USE_PARTICLES
f@0 105 ParticleController mParticleController;
f@0 106 #endif
f@0 107
f@0 108
f@0 109
f@0 110 /* there is one cursor for each Synth being played */
f@0 111 std::map < SynthID, Cursor > mCursors;
f@0 112 std::vector<int> mCursorsPos;
f@0 113
f@0 114 public:
f@0 115
f@0 116 // note used to identify the loop for cursor position
f@0 117 static const int kLoopNote = -1;
f@0 118 static const cinder::Color CURSOR_CLR;
f@0 119 /* must be in sync with supercollider durationFactor ControlSpec max */
f@0 120 static const int MAX_DURATION = 8;
f@0 121 #ifdef USE_PARTICLES
f@0 122 static const int PARTICLESIZE_COEFF = 40;
f@0 123 #endif
f@0 124
f@0 125 void reset(bool onlyChunks);
f@0 126
f@0 127 void setChunk(size_t index, float bottom, float top);
f@0 128
f@0 129 const Chunk & getChunk(size_t index);
f@0 130
f@0 131 inline void setCursorPos( SynthID id, int pos, const DrawInfo& di ){
f@0 132
f@0 133 Cursor & cursor = mCursors[id];
f@0 134 cursor.pos = pos;
f@0 135 cursor.lastUpdate = ci::app::getElapsedSeconds();
f@0 136
f@0 137 #ifdef USE_PARTICLES
f@0 138 /* if the duration is greater than 1.0 carry on the cursor as a particle
f@0 139 the smaller the selection the more particles
f@0 140 the bigger the duration the more particles */
f@0 141 if (mSelection.getParticleSpread() > 1.0f){
f@0 142 /* amountCoeff ranges from 1/8 to 1 */
f@0 143 const float amountCoeff = (mSelection.getParticleSpread() / MAX_DURATION);
f@0 144
f@0 145 /* get radom point within seleciton as center of the particle */
f@0 146 vec2 centrePoint; // was former getRandomPoint
f@0 147 const int randomChunkIndex = ci::Rand::randInt(mSelection.getStart(), mSelection.getEnd() );
f@0 148
f@0 149 centrePoint.x = di.flipX( 1 + (randomChunkIndex * (2 + Chunk::kWidth)) + Chunk::kWidth / 2 );
f@0 150 centrePoint.y = di.flipY( di.audioToHeigt(0.0) );
f@0 151
f@0 152 const float wavePixelLen = mNumChunks * ( 2 + Chunk::kWidth);
f@0 153 centrePoint.x *= float(di.getWindowWidth()) / wavePixelLen;
f@0 154
f@0 155 mParticleController.addParticles(
f@0 156 std::max( 1, (int)(amountCoeff * ParticleController::kMaxParticleAdd * mFilterCoeff) ), // amount of particles to add
f@0 157 centrePoint,
f@0 158 mSelection.getParticleSpread() * PARTICLESIZE_COEFF // size of the cloud
f@0 159 );
f@0 160 }
f@0 161 #endif
f@0 162
f@0 163
f@0 164 }
f@0 165
f@0 166 void update( double secondsPerChunk, const DrawInfo& di );
f@0 167
f@0 168 void removeCursor( SynthID id ) { mCursors.erase( id ); }
f@0 169
f@0 170 // parameter ranges from 0 to 1
f@0 171 inline void setselectionAlpha(float alpha){ mFilterCoeff = alpha;}
f@0 172
f@0 173 void draw( const DrawInfo& di );
f@0 174
f@0 175 Selection& getSelection() { return mSelection; };
f@0 176
f@0 177 size_t getSize() const{ return mChunks.size(); }
f@0 178
f@0 179 void setScopePoint(int index, float audioVal);
f@0 180
f@0 181 Wave( size_t numChunks, Color selectionColor );
f@0 182
f@0 183 // no copies
f@0 184 Wave( const Wave &copy ) = delete;
f@0 185 Wave & operator=(const Wave &copy) = delete;
f@0 186
f@0 187
f@0 188 private:
f@0 189
f@0 190 const size_t mNumChunks;
f@0 191
f@0 192 std::vector<Chunk> mChunks;
f@0 193
f@0 194 Selection mSelection;
f@0 195
f@0 196 cinder::Color mColor;
f@0 197
f@0 198 float mFilterCoeff;
f@0 199
f@0 200 ci::gl::BatchRef mChunkBatch;
f@0 201
f@0 202 };
f@0 203