[Sommaire] [Imprimer]

   1  /*
   2      DynAPI Distribution
   3      CircleAnimation Class
   4  
   5      The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
   6  
   7      requires: dynapi.functions.Math,dynapi.fx.Thread
   8  */
   9  
  10  function CircleAnimation(dlyr) {
  11      this.Thread = Thread;
  12      this.Thread(dlyr);
  13  
  14      this.offsetX = 0;
  15      this.offsetY = 0;
  16      this.playing = false;
  17      this.radius = 100;
  18      this.angle = 0;
  19      this.setAngleIncrement(10);
  20  };
  21  var p = dynapi.setPrototype('CircleAnimation','Thread');
  22  p.setRadius = function (r) {
  23      this.hradius = this.vradius = r;
  24  };
  25  p.setHRadius = function (r) {
  26      this.hradius = r;
  27  };
  28  p.setVRadius = function (r) {
  29      this.vradius = r;
  30  };
  31  p.setAngle = function (a) {
  32      this.angle = dynapi.functions.degreeToRadian(a);
  33  };
  34  p.setAngleIncrement = function (inc) {
  35      this.angleinc = dynapi.functions.degreeToRadian(inc);
  36  };
  37  p.playAnimation = function () {
  38      this.playing = true;
  39      if (this.dlyr!=null) {
  40          this.offsetX = this.hradius*Math.cos(this.angle);
  41          this.offsetY = -this.vradius*Math.sin(this.angle);
  42          this.baseX = this.dlyr.x-this.offsetX;
  43          this.baseY = this.dlyr.y+this.offsetY;
  44          this.dlyr.invokeEvent("circlestart");
  45      }
  46      this.start();
  47  };
  48  p.stopAnimation = function () {
  49      this.playing = false;
  50      this.stop();
  51      if (this.dlyr!=null) this.dlyr.invokeEvent("circlestop");
  52  };
  53  p.run = function () {
  54      if (!this.playing || this.dlyr==null) return;    
  55      this.angle += this.angleinc;
  56      this.offsetX = this.hradius*Math.cos(this.angle);
  57      this.offsetY = -this.vradius*Math.sin(this.angle);
  58  
  59      if (this.dlyr!=null) {
  60          this.dlyr.invokeEvent("circlerun");
  61          this.dlyr.setLocation(this.baseX+this.offsetX,this.baseY+this.offsetY);
  62      }
  63  };
  64  p.reset = function () {
  65      this.angle = this.offsetX = this.offsetY = 0;
  66  };
  67  p.generatePath = function(centerX,centerY) {
  68      if (centerX==null) centerX = this.dlyr!=null? this.dlyr.x : 0;
  69      if (centerY==null) centerY = this.dlyr!=null? this.dlyr.y : 0;
  70      var path = [];
  71      var i = 0;
  72  /*    for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
  73          path[i] = Math.round(centerX + this.hradius*Math.cos(a));
  74          path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
  75          i+=2;
  76      }*/
  77  
  78      if (this.angleinc>0)
  79          for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
  80              path[i] = Math.round(centerX + this.hradius*Math.cos(a));
  81              path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
  82              i+=2;
  83          }
  84      else
  85          for (var a=this.angle;a>=this.angle-Math.PI*2;a+=this.angleinc) {
  86              path[i] = Math.round(centerX + this.hradius*Math.cos(a));
  87              path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
  88              i+=2;
  89          }
  90      return path;
  91  };