Monthly Archives: March 2010

To release or not to release…

By Zevan | March 31, 2010

So I have a QuickBox2D editor that I’ve had since the earliest version of QuickBox2D. It is really pretty buggy and imperfect. I’m wondering if I should release it even though it’s really buggy… my main issue is I won’t be able to guarantee that it is a safe editor to use for real projects.

Thoughts? Should I release it anyway?

Posted in QuickBox2D | Tagged , | 13 Comments

AS Quiz #18

By Zevan | March 30, 2010

Today’s quiz is about BitmapData and the Graphics class…

Number of Questions : 5
Difficulty : Medium
Topic : BitmapData, Graphics

True or False. Subpixel x and y coordinates for DisplayObjects are made possible by anti-aliasing.



Which of the following methods would you use to set a pixel with an alpha channel value?





Which of the following methods would you used if you wanted to boost performance when drawing to a BitmapData object?




True or False. Perlin Noise is built right into the BitmapData class.



Which of the following methods does not exist in the Graphics class?











Posted in Quiz | Tagged , , , | 8 Comments

Logistic Map Play

By Zevan | March 27, 2010
CLICK HERE TO COPY
Actionscript:
  1. var offX:Number = 100;
  2. var offY:Number = 300;
  3. var scalarX:Number = 6;
  4. var scalarY:Number = 200;
  5. addEventListener(Event.ENTER_FRAME, onLoop);
  6. function onLoop(evt:Event):void{
  7.     var r:Number = mouseY / 100;
  8.     var xn:Number = (mouseX - 100) / 650;
  9.     var xn1:Number = 0;
  10.     graphics.clear();
  11.     graphics.lineStyle(0,0);
  12.     for (var i:int = 0; i<100; i++){
  13.       xn1 = r * xn * (1 - xn);
  14.       xn = xn1;
  15.       if (i == 0){
  16.         graphics.moveTo(offX+i*scalarX,offY+xn1*scalarY);  
  17.       }else{
  18.         graphics.lineTo(offX+i*scalarX, offY+xn1*scalarY);
  19.       }
  20.     }
  21. }

Whenever I can't decide what kind of snippet to make, I simply go to wikipedia or mathworld for a bit and I always end up with something. I've messed with Logistic Maps before (when learning about strange attractors). This is a simple rendering where the x and y axis change the biotic potential (r) and the starting value for x.

Here is the link I used for reference.


Have a look at the swf (just move your mouse around).

Posted in Graphics, Math, misc | Tagged , , | 2 Comments

QuickBox2D Nodes

By Zevan | March 26, 2010

Been thinking about nonsense nodes recently so I created this with my QuickBox2D editor. I have yet to release the editor because its buggy, but it does work nicely for some things:


Have a look at the swf....


CLICK HERE TO COPY
Actionscript:
  1. import com.actionsnippet.qbox.*;
  2.  
  3. stage.quality="medium";
  4. var sim:QuickBox2D = new QuickBox2D(this, {gravityY:0.2});
  5.  
  6. sim.setDefault({fillColor:0xEFEFEF, fillAlpha:0.5, lineColor:0x666666});
  7.  
  8.  
  9. var auto4:QuickObject = sim.addBox({x:9.33, y:4.67, width:1.33, height:1.33, angle: 0, density:1});
  10. var auto5:QuickObject = sim.addBox({x:11, y:4.67, width:1.33, height:1.33, angle: 0, density:1});
  11. var auto6:QuickObject = sim.addBox({x:12.67, y:4.67, width:1.33, height:1.33, angle: 0, density:1});
  12. var auto7:QuickObject = sim.addCircle({x:11, y:3, radius:0.67, density:1});
  13. var auto11:QuickObject = sim.addBox({x:9, y:6, width:0.67, height:0.67, angle: 0, density:1});
  14. var auto13:QuickObject = sim.addBox({x:9, y:7, width:0.67, height:0.67, angle: 0, density:1});
  15. var auto15:QuickObject = sim.addBox({x:11, y:6.33, width:1.33, height:1.33, angle: 0, density:1});
  16. var auto17:QuickObject = sim.addBox({x:14, y:4.33, width:0.67, height:0.67, angle: 0, density:1});
  17. var auto18:QuickObject = sim.addBox({x:15, y:4.33, width:0.67, height:0.67, angle: 0, density:1});
  18. var auto19:QuickObject = sim.addBox({x:14, y:3, width:0.67, height:0.67, angle: 0, density:1});
  19. var auto25:QuickObject = sim.addBox({x:12.17, y:6.33, width:0.33, height:1.33, angle: 0, density:1});
  20. var auto26:QuickObject = sim.addBox({x:13.17, y:6.33, width:0.33, height:1.33, angle: 0, density:1});
  21. var auto29:QuickObject = sim.addBox({x:13.67, y:7.67, width:3.33, height:0.67, angle: 0, density:1});
  22. var auto32:QuickObject = sim.addBox({x:10.67, y:7.67, width:0.67, height:0.67, angle: 0, density:1});
  23. var auto35:QuickObject = sim.addBox({x:9, y:8, width:0.67, height:0.67, angle: 0, density:1});
  24. var auto37:QuickObject = sim.addBox({x:9, y:9, width:0.67, height:0.67, angle: 0, density:1});
  25. var auto38:QuickObject = sim.addBox({x:10.33, y:9.33, width:1.33, height:1.33, angle: 0, density:1});
  26. var auto39:QuickObject = sim.addBox({x:11.67, y:9, width:0.67, height:0.67, angle: 0, density:1});
  27. var auto40:QuickObject = sim.addBox({x:12.67, y:9.67, width:0.67, height:0.67, angle: 0, density:1});
  28. var auto41:QuickObject = sim.addBox({x:13.67, y:9.67, width:0.67, height:0.67, angle: 0, density:1});
  29. var auto42:QuickObject = sim.addBox({x:15, y:9.33, width:1.33, height:1.33, angle: 0, density:1});
  30. var auto43:QuickObject = sim.addBox({x:11.67, y:10, width:0.67, height:0.67, angle: 0, density:1});
  31. var auto44:QuickObject = sim.addBox({x:11.67, y:11, width:0.67, height:0.67, angle: 0, density:1});
  32. var auto45:QuickObject = sim.addBox({x:15, y:10.67, width:1.33, height:0.67, angle: 0, density:1});
  33. var auto46:QuickObject = sim.addBox({x:9, y:10, width:0.67, height:0.67, angle: 0, density:1});
  34. var auto62:QuickObject = sim.addCircle({x:12.67, y:1, radius:0.33, density:0});
  35. // joints:
  36. sim.setDefault({frequencyHz:0.7, lineColor:0x666666});
  37. var auto8:QuickObject = sim.addJoint({a:auto7.body, b:auto4.body, x1:11, y1:3, x2:9.33, y2:4.33});
  38. var auto9:QuickObject = sim.addJoint({a:auto7.body, b:auto5.body, x1:11, y1:3, x2:11, y2:4.33});
  39. var auto10:QuickObject = sim.addJoint({a:auto7.body, b:auto6.body, x1:11, y1:3, x2:12.67, y2:4.33});
  40. var auto12:QuickObject = sim.addJoint({a:auto11.body, b:auto4.body, x1:9, y1:6, x2:9, y2:5});
  41. var auto14:QuickObject = sim.addJoint({a:auto11.body, b:auto13.body, x1:9, y1:6, x2:9, y2:7});
  42. var auto16:QuickObject = sim.addJoint({a:auto5.body, b:auto15.body, x1:11, y1:5, x2:11, y2:6});
  43. var auto20:QuickObject = sim.addJoint({a:auto6.body, b:auto19.body, x1:12.67, y1:4.33, x2:14, y2:3});
  44. var auto21:QuickObject = sim.addJoint({a:auto19.body, b:auto17.body, x1:14, y1:3, x2:14, y2:4.33});
  45. var auto22:QuickObject = sim.addJoint({a:auto17.body, b:auto18.body, x1:14, y1:4.33, x2:15, y2:4.33});
  46. var auto23:QuickObject = sim.addJoint({a:auto17.body, b:auto6.body, x1:14, y1:4.33, x2:13, y2:4.33});
  47. var auto24:QuickObject = sim.addJoint({a:auto7.body, b:auto19.body, x1:11, y1:3, x2:14, y2:3});
  48. var auto27:QuickObject = sim.addJoint({a:auto6.body, b:auto25.body, x1:12.17, y1:5.1, x2:12.17, y2:5.97});
  49. var auto28:QuickObject = sim.addJoint({a:auto6.body, b:auto26.body, x1:13.2, y1:5.1, x2:13.23, y2:6.1});
  50. var auto30:QuickObject = sim.addJoint({a:auto18.body, b:auto29.body, x1:15, y1:4.33, x2:15, y2:7.67});
  51. var auto31:QuickObject = sim.addJoint({a:auto17.body, b:auto29.body, x1:14, y1:4.33, x2:15, y2:7.67});
  52. var auto33:QuickObject = sim.addJoint({a:auto15.body, b:auto32.body, x1:11, y1:6.33, x2:10.67, y2:7.67});
  53. var auto34:QuickObject = sim.addJoint({a:auto32.body, b:auto29.body, x1:10.67, y1:7.67, x2:12.33, y2:7.67});
  54. var auto36:QuickObject = sim.addJoint({a:auto13.body, b:auto35.body, x1:9, y1:7, x2:9, y2:8});
  55. var auto47:QuickObject = sim.addJoint({a:auto35.body, b:auto37.body, x1:9, y1:8, x2:9, y2:9});
  56. var auto48:QuickObject = sim.addJoint({a:auto46.body, b:auto37.body, x1:9, y1:10, x2:9, y2:9});
  57. var auto49:QuickObject = sim.addJoint({a:auto37.body, b:auto38.body, x1:9, y1:9, x2:10.33, y2:9.33});
  58. var auto50:QuickObject = sim.addJoint({a:auto46.body, b:auto38.body, x1:9, y1:10, x2:10.33, y2:9.33});
  59. var auto51:QuickObject = sim.addJoint({a:auto38.body, b:auto39.body, x1:10.33, y1:9.33, x2:11.67, y2:9});
  60. var auto52:QuickObject = sim.addJoint({a:auto38.body, b:auto43.body, x1:10.33, y1:9.33, x2:11.67, y2:10});
  61. var auto53:QuickObject = sim.addJoint({a:auto38.body, b:auto44.body, x1:10.33, y1:9.33, x2:11.67, y2:11});
  62. var auto54:QuickObject = sim.addJoint({a:auto39.body, b:auto40.body, x1:11.67, y1:9, x2:12.67, y2:9.67});
  63. var auto55:QuickObject = sim.addJoint({a:auto43.body, b:auto40.body, x1:11.67, y1:10, x2:12.67, y2:9.67});
  64. var auto56:QuickObject = sim.addJoint({a:auto44.body, b:auto40.body, x1:11.67, y1:11, x2:12.67, y2:9.67});
  65. var auto57:QuickObject = sim.addJoint({a:auto41.body, b:auto40.body, x1:13.67, y1:9.67, x2:12.67, y2:9.67});
  66. var auto58:QuickObject = sim.addJoint({a:auto41.body, b:auto42.body, x1:13.67, y1:9.67, x2:14.67, y2:9.67});
  67. var auto59:QuickObject = sim.addJoint({a:auto42.body, b:auto29.body, x1:14.67, y1:9, x2:15, y2:7.67});
  68. var auto60:QuickObject = sim.addJoint({a:auto42.body, b:auto29.body, x1:15.33, y1:9, x2:15, y2:7.67});
  69. var auto61:QuickObject = sim.addJoint({a:auto42.body, b:auto45.body, x1:15, y1:9.33, x2:15, y2:10.67});
  70. var auto63:QuickObject = sim.addJoint({a:auto62.body, b:auto7.body, x1:12.67, y1:1, x2:11, y2:3});
  71. var auto64:QuickObject = sim.addJoint({a:auto62.body, b:auto19.body, x1:12.67, y1:1, x2:14, y2:3});
  72. var auto65:QuickObject = sim.addJoint({a:auto25.body, b:auto29.body, x1:12.17, y1:6.8, x2:12.27, y2:7.67});
  73. var auto66:QuickObject = sim.addJoint({a:auto26.body, b:auto29.body, x1:13.2, y1:6.8, x2:13.2, y2:7.6});
  74.  
  75. sim.start();
  76. sim.mouseDrag();

Posted in Uncategorized | 6 Comments