/*
DynAPI Distribution
CircleAnimation Class
The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
requires: dynapi.functions.Math,dynapi.fx.Thread
*/
function CircleAnimation(dlyr) {
this.Thread = Thread;
this.Thread(dlyr);
this.offsetX = 0;
this.offsetY = 0;
this.playing = false;
this.radius = 100;
this.angle = 0;
this.setAngleIncrement(10);
};
var p = dynapi.setPrototype('CircleAnimation','Thread');
p.setRadius = function (r) {
this.hradius = this.vradius = r;
};
p.setHRadius = function (r) {
this.hradius = r;
};
p.setVRadius = function (r) {
this.vradius = r;
};
p.setAngle = function (a) {
this.angle = dynapi.functions.degreeToRadian(a);
};
p.setAngleIncrement = function (inc) {
this.angleinc = dynapi.functions.degreeToRadian(inc);
};
p.playAnimation = function () {
this.playing = true;
if (this.dlyr!=null) {
this.offsetX = this.hradius*Math.cos(this.angle);
this.offsetY = -this.vradius*Math.sin(this.angle);
this.baseX = this.dlyr.x-this.offsetX;
this.baseY = this.dlyr.y+this.offsetY;
this.dlyr.invokeEvent("circlestart");
}
this.start();
};
p.stopAnimation = function () {
this.playing = false;
this.stop();
if (this.dlyr!=null) this.dlyr.invokeEvent("circlestop");
};
p.run = function () {
if (!this.playing || this.dlyr==null) return;
this.angle += this.angleinc;
this.offsetX = this.hradius*Math.cos(this.angle);
this.offsetY = -this.vradius*Math.sin(this.angle);
if (this.dlyr!=null) {
this.dlyr.invokeEvent("circlerun");
this.dlyr.setLocation(this.baseX+this.offsetX,this.baseY+this.offsetY);
}
};
p.reset = function () {
this.angle = this.offsetX = this.offsetY = 0;
};
p.generatePath = function(centerX,centerY) {
if (centerX==null) centerX = this.dlyr!=null? this.dlyr.x : 0;
if (centerY==null) centerY = this.dlyr!=null? this.dlyr.y : 0;
var path = [];
var i = 0;
/* for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
path[i] = Math.round(centerX + this.hradius*Math.cos(a));
path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
i+=2;
}*/
if (this.angleinc>0)
for (var a=this.angle;a<=this.angle+Math.PI*2;a+=this.angleinc) {
path[i] = Math.round(centerX + this.hradius*Math.cos(a));
path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
i+=2;
}
else
for (var a=this.angle;a>=this.angle-Math.PI*2;a+=this.angleinc) {
path[i] = Math.round(centerX + this.hradius*Math.cos(a));
path[i+1] = Math.round(centerY - this.vradius*Math.sin(a));
i+=2;
}
return path;
};