innovationBot/Timeline.h at master · panGenerator/innovationBot · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164

//

typedef float (*KeyEasing)(float t, float b, float c, float d);

typedef struct _keyframe {
    float val;
    unsigned long dur;
    KeyEasing ease;
} Keyframe;


class Timeline {

  Keyframe* keyframes;
  int keyframeIndex = 0;
  int keyframeCount;

  float currentValue = 0.0;
  float initialValue = 0.0;
  float destinationValue = 0.0;
  float previousValue = 0.0;

  unsigned long timer;
  unsigned long duration;
  unsigned long keyDuration;

  bool running = false;
  bool finished = false;


  public:
  // ----------------------------------------------------

  void setup(){

  }

  void play( Keyframe* _key, int _keyCount ){

    play( _key, _keyCount, 0.0 );

  }

  void play( Keyframe* _key, int _keyCount, float _initialVal ){

    //Serial.println( "----- ANIM START -----" );

    keyframes = _key;
    keyframeCount = _keyCount;
    keyframeIndex = 0;

    initialValue = _initialVal;
    previousValue = initialValue;
    destinationValue = keyframes[ keyframeIndex ].val;
    keyDuration = keyframes[ keyframeIndex ].dur;

    timer = millis();
    running = true;
    finished = false;

  }

  void stop(){

    running = false;

  }

  void reset(){

    running = false;
    finished = false;
    keyframeIndex = 0;
    currentValue = 0;
    previousValue = initialValue;
    destinationValue = keyframes[ keyframeIndex ].val;
    keyDuration = keyframes[ keyframeIndex ].dur;

    //Serial.println( "----- ANIM STOPPED -----" );

  }

  void nextKeyframe(){

    currentValue = destinationValue; // HACK to avoid rounding erros;

    keyframeIndex ++;

    if( keyframeIndex < keyframeCount ){

      previousValue = currentValue;
      destinationValue = keyframes[ keyframeIndex ].val;
      keyDuration = keyframes[ keyframeIndex ].dur;

      timer = millis();

    }else{

      if( running ){
         //Serial.println( "----------- END --------------" );
         finished = true;
      }

      running = false;

    }

  }

  void update(){

    if( running ){

      double p = double(millis() - timer) / double( keyDuration );

      // DEBUG
//      Serial.print( keyframeIndex );
//      Serial.print( " " );
//      Serial.print( keyDuration );
//      Serial.print( " " );
//      Serial.print( previousValue );
//      Serial.print( " " );
//      Serial.print( destinationValue );
//      Serial.print( " " );
//      Serial.print( p );
//      Serial.print( " " );
//      Serial.println( currentValue );
      //

      if( millis() < timer + keyDuration ){

         currentValue = keyframes[ keyframeIndex ].ease( p, previousValue, destinationValue - previousValue, 1.0 );

      }else{

         nextKeyframe();

      }

      //

    }else{

      finished = false;

    }

  }

  float getCurrentValue() {
    return currentValue;
  }

  bool isRunning(){
    return running;
  }

  bool isFinished(){
    return finished;
  }


};