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1 #pragma once
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2
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3 #include "cinder/Area.h"
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4
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5 class DrawInfo
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6 {
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7 public:
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8
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9 DrawInfo( size_t waveIndex ):
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10 mWaveIndex( waveIndex ),
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11 mWindowWidth(0),
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12 mWindowHeight(0),
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13 mSelectionBarHeight(0),
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14 mShrinkFactor(1)
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15 {}
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16
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17 void reset( const ci::Area &bounds, float shrinkFactor )
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18 {
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19 mWindowWidth = bounds.getWidth();
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20 mWindowHeight = bounds.getHeight();
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21 mSelectionBarHeight = mWindowHeight / NUM_WAVES;
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22 mShrinkFactor = shrinkFactor;
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23 }
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24
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25 float audioToHeigt(float audioSample) const {
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26 /* clip into range [-1.1] */
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27 if (audioSample < -1.0f) {
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28 audioSample = -1.0f;
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29 }
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30 else if ( audioSample > 1.0f ){
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31 audioSample = 1.0f;
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32 }
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33
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34 /* map from [-1,1] to [0,1] */
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35 float ratio = (audioSample - (-1.0f)) * 0.5f; // 2 = 1 - (-1)
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36
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37 /* get bottom and add the scaled height */
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38 return ratio * mSelectionBarHeight; //remove bounds.getY1() bound only needed for size of tier
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39 }
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40
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41 float getMaxChunkHeight() const
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42 {
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43 return mSelectionBarHeight * mShrinkFactor;
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44 }
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45
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46 float getSelectionBarHeight() const
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47 {
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48 return mSelectionBarHeight;
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49 }
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50
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51 int32_t getWaveCenterY() const
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52 {
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53 if ( mWaveIndex == 0 )
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54 return mWindowHeight * 0.75f + 1;
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55 else
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56 return mWindowHeight / (NUM_WAVES * 2);
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57 }
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58
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59 int flipY(int y) const
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60 {
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61 if ( mWaveIndex == 0)
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62 return mWindowHeight - y /*+ 24*/;
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63 else
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64 return y /*- 24*/;
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65 }
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66
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67 int flipX(int x) const
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68 {
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69 return x;
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70 }
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71
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72
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73 // how much the wave is shrunk on the y axis with respect to the wave's tier
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74 float getShrinkFactor() const
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75 {
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76 return mShrinkFactor;
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77 }
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78
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79 int32_t getWindowWidth() const
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80 {
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81 return mWindowWidth;
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82 }
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83
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84 int32_t getWindowHeight() const
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85 {
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86 return mWindowHeight;
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87 }
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88
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89 DrawInfo( const DrawInfo &original ) = delete;
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90 DrawInfo & operator=( const DrawInfo &original ) = delete;
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91
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92 private:
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93 const size_t mWaveIndex;
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94
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95 int32_t mWindowHeight;
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96 int32_t mWindowWidth;
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97 int32_t mSelectionBarHeight;
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98
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99 float mShrinkFactor;
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100
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101 };
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