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43 lines
985 B
JavaScript
43 lines
985 B
JavaScript
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/*
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DynAPI Distribution
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Slide Animation Extension
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The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
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requires: dynapi.fx.Thread
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*/
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// Generates a path between 2 points, stepping inc pixels at a time
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function SlideAnimation(x1,y1,x2,y2,inc) {
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var n,dx,dy,lx,ly,p=[];
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if (x2==null) x2 = x1;
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if (y2==null) y2 = y1;
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lx = x2-x1;
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ly = y2-y1;
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n = Math.sqrt(Math.pow(lx,2) + Math.pow(ly,2))/(inc||10);
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dx = lx/n;
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dy = ly/n;
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for (var i=0;i<n;i++) {
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p[i*2] = x1 + Math.round(dx*i);
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p[i*2+1] = y1 + Math.round(dy*i);
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}
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if (p[i*2-2] != x2 || p[i*2-1] != y2) {
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p[i*2] = x2;
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p[i*2+1] = y2;
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}
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return p;
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};
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DynLayer.prototype.slideTo = function(x2,y2,inc,ms) {
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if (this.x!=x2 || this.y!=y2) {
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if (!this._thread) this._thread = new Thread(this);
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if (ms) this._thread.interval = ms;
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this._thread.play(SlideAnimation(this.x,this.y,x2,y2,inc));
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}
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};
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DynLayer.prototype.slideStop = function () {
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if (this._thread) this._thread.stop();
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};
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