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Skip to number with ease/tween

[1 Reply]
- 25-Mar-2013 02:22 AM
- Forum: Programming Questions
Hello there dear people of Processing.

I'm now at my 4th day of learning Processing.

After a few brainbusters I've come to a point where I need your help.

I'm currently working on a test model of an idea that I have.

My goal is is have a step motor turning, with 8 magnets or rfid chips on the side.

This will be read by a sensor. This sensor will tell the software at what degrees (0, 45, 90, 135 etc) the step motor is.

The software will then adjust the movie to to right frame, according to the degrees of the step motor.

I've copy and pasted serval examples together and I've achieved some parts of it.

For now, the hardware part is just a press of the keyboard.

And instead of the movie, I have a timer.

But here's my problem. When the magnet passed the sensor (keyPressed),

the current frame will be skipped to the right number.

So you will have a cut in the movie(which is a timer for now).

I want to achieve a speed up or slow down to adjust to the correct frame.

I think this is possible by tweening or easing, but I don't know how to implement this.

Underneath is my code. I hope this and my question makes any sense to you. If not, tell me.

If you have any tips on making this work, please let me know.

El Bucho
2. ///////////////////
3. ///ElBucho////////
4. //////////////////
7. int actualSecs; //actual seconds elapsed since start
8. int startSec = 0 ; //used to reset seconds shown on screen to 0
9. int scrnSecs; //seconds displayed on screen (will be 0-360)
10. int restartSecs; //number of seconds elapsed at last click or 360 sec interval
11. int totalSec = 360; // total seconds
13. void setup() {
14. size(600, 500);
16. smooth();
17. PFont font;
18. font = createFont("Arial", 72); // Arial, 16 point, anti-aliasing on
19. textFont(font, 72);
20. }
22. void draw() {
23. background(0);
25. ////////////////////////////////////
26. //*this section is the "mathy" part*//
27. ////////////////////////////////////
28. actualSecs = millis()/50; //converts to timer.
29. scrnSecs = actualSecs - restartSecs; //seconds to be shown on screen
31. //the skip part
32. if ((scrnSecs) >= 338 && (scrnSecs) <= 359 ||(scrnSecs) >= 0 && (scrnSecs) <= 22) { //range 1 skip to 0 degrees
33. if (keyPressed) {
34. restartSecs = actualSecs - 0;
35. scrnSecs = 0;
36. }
37. }
38. if ((scrnSecs) >= 23 && (scrnSecs) <= 67) { //range 2 skip to 45 degrees
39. if (keyPressed) {
40. restartSecs = actualSecs - 45;
41. scrnSecs = 45;
42. }
43. }
44. if ((scrnSecs) >= 68 && (scrnSecs) <= 112) { //range 3 skip to 90 degrees
45. if (keyPressed) {
46. restartSecs = actualSecs - 90;
47. scrnSecs = 90;
48. }
49. }
50. if ((scrnSecs) >= 113 && (scrnSecs) <= 157) { //range 4 skip to 135 degrees
51. if (keyPressed) {
52. restartSecs = actualSecs - 135;
53. scrnSecs = 135;
54. }
55. }
56. if ((scrnSecs) >= 158 && (scrnSecs) <= 202) { //range 5 skip to 180 degrees
57. if (keyPressed) {
58. restartSecs = actualSecs - 180;
59. scrnSecs = 180;
60. }
61. }
62. if ((scrnSecs) >= 203 && (scrnSecs) <= 247) { //range 6 skip to 225 degrees
63. if (keyPressed) {
64. restartSecs = actualSecs - 225;
65. scrnSecs = 225;
66. }
67. }
68. if ((scrnSecs) >= 248 && (scrnSecs) <= 292) { //range 7 skip to 270 degrees
69. if (keyPressed) {
70. restartSecs = actualSecs - 270;
71. scrnSecs = 270;
72. }
73. }
74. if ((scrnSecs) >= 293 && (scrnSecs) <= 337) { //range 8 skip to 315 degrees
75. if (keyPressed) {
76. restartSecs = actualSecs - 315;
77. scrnSecs = 315;
78. }
79. }
81. // the text part
83. if ((scrnSecs) >= 0 && (scrnSecs) <= 22) { //range 1 skip to 0 degrees
84. text("1, 0-22 0*", width/2,height/4);
85. }
86. if ((scrnSecs) >= 23 && (scrnSecs) <= 67) { //range 2 skip to 45 degrees
87. text("2, 23-67 45*", width/2,height/4);
88. }
89. if ((scrnSecs) >= 68 && (scrnSecs) <= 112) { //range 3 skip to 90 degrees
90. text("3, 68-112 90*", width/2,height/4);
91. }
92. if ((scrnSecs) >= 113 && (scrnSecs) <= 157) { //range 4 skip to 135 degrees
93. text("4, 113-157 135*", width/2,height/4);
94. }
95. if ((scrnSecs) >= 158 && (scrnSecs) <= 202) { //range 5 skip to 180 degrees
96. text("5, 158-202 180*", width/2,height/4);
97. }
98. if ((scrnSecs) >= 203 && (scrnSecs) <= 247) { //range 6 skip to 225 degrees
99. text("6, 203-247 225*", width/2,height/4);
100. }
101. if ((scrnSecs) >= 248 && (scrnSecs) <= 292) { //range 7 skip to 270 degrees
102. text("7, 248-292 270*", width/2,height/4);
103. }
104. if ((scrnSecs) >= 293 && (scrnSecs) <= 337) { //range 8 skip to 315 degrees
105. text("8, 293-337 315*", width/2,height/4);
106. }
107. if ((scrnSecs) >= 338 && (scrnSecs) <= 359) { //range 9(1) skip to 0 degrees
108. text("9, 338-359 360*", width/2,height/4);
109. }
112. //if (keyPressed) { //if any key is pressed, restart timer
113. //restartSecs = actualSecs - skipSec ; //stores elapsed SECONDS
114. //scrnSecs = skipSec; //restart screen timer
115. //}
117. if (scrnSecs == totalSec) { //after 360 secs, restart second timer
118. restartSecs = actualSecs; //placeholder for this second in time
119. scrnSecs = startSec; //reset to zero
120. }
122. println(scrnSecs); //print timer to console (secs)
124. //displays time on screen
125. textAlign(CENTER);
126. fill(255);
127. text(nf(scrnSecs, 2), width/2, height/2);
128. }

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