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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 20 | reyssat | 1 | /* |
| 2 | DynAPI Distribution |
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| 3 | Glide Animation Extension |
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| 4 | |||
| 5 | The DynAPI Distribution is distributed under the terms of the GNU LGPL license. |
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| 6 | |||
| 7 | requires: dynapi.fx.Thread |
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| 8 | */ |
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| 9 | |||
| 10 | function GlideAnimation(x1,y1,x2,y2,angleinc,startSpeed,endSpeed) { |
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| 11 | if (x2==null) x2 = x1; |
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| 12 | if (y2==null) y2 = y1; |
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| 13 | |||
| 14 | var normAngle = dynapi.functions.getNormalizedAngle(x1,y1,x2,y2); |
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| 15 | var distx = x2-x1; |
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| 16 | var disty = y2-y1; |
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| 17 | var distance = Math.sqrt(Math.pow(distx,2) + Math.pow(disty,2)); |
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| 18 | angleinc = (angleinc==null)? 7 : Math.abs(angleinc); |
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| 19 | |||
| 20 | // a terrible mess but it works |
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| 21 | var r = 1; |
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| 22 | if (startSpeed == "fast") { |
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| 23 | var centerX = x1; |
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| 24 | var centerY = y1; |
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| 25 | var centerX2 = x2; |
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| 26 | var centerY2 = y2; |
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| 27 | startAngle = 0; |
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| 28 | endAngle = 90; |
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| 29 | if (endSpeed=="fast") distance = distance/2; |
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| 30 | } |
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| 31 | else { |
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| 32 | startAngle = -90; |
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| 33 | endAngle = 0; |
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| 34 | if (endSpeed == "fast") { |
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| 35 | var centerX = x1+distx; |
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| 36 | var centerY = y1+disty; |
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| 37 | } |
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| 38 | else { // default slow,slow |
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| 39 | var centerX2 = x2-distx/2; |
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| 40 | var centerY2 = y2-disty/2; |
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| 41 | distance = distance/2; |
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| 42 | var centerX = x1+distx/2; |
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| 43 | var centerY = y1+disty/2; |
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| 44 | r = -1; |
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| 45 | } |
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| 46 | } |
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| 47 | |||
| 48 | var i,d,x,y,dx,dy,path=[]; |
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| 49 | for (var a=startAngle; a<endAngle; a+=angleinc) { |
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| 50 | i = path.length; |
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| 51 | d = distance*Math.sin(a*Math.PI/180); |
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| 52 | path[i] = Math.round(centerX + d*Math.cos(normAngle)); |
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| 53 | path[i+1] = Math.round(centerY - d*Math.sin(normAngle)); |
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| 54 | } |
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| 55 | if (startSpeed==endSpeed) { |
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| 56 | for (var a=endAngle; a<endAngle+90; a+=angleinc) { |
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| 57 | i = path.length; |
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| 58 | d = distance*Math.sin(a*Math.PI/180); |
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| 59 | path[i] = Math.round(centerX2 - r*d*Math.cos(normAngle)); |
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| 60 | path[i+1] = Math.round(centerY2 + r*d*Math.sin(normAngle)); |
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| 61 | } |
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| 62 | } |
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| 63 | |||
| 64 | var l = path.length; |
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| 65 | if (path[l-2] != x2 && path[l-1]!=y2) { |
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| 66 | path[l] = x2; |
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| 67 | path[l+1] = y2; |
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| 68 | } |
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| 69 | return path; |
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| 70 | }; |
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| 71 | |||
| 72 | DynLayer.prototype.glideStop = function () { |
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| 73 | if (this._thread) this._thread.stop(); |
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| 74 | }; |
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| 75 | DynLayer.prototype.glideTo = function(x2,y2,angleinc,ms,startSpeed,endSpeed) { |
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| 76 | if (this.x!=x2 || this.y!=y2) { |
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| 77 | if (!this._thread) this._thread = new Thread(this); |
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| 78 | if (ms) this._thread.interval = ms; |
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| 79 | this._thread.play(GlideAnimation(this.x,this.y,x2,y2,angleinc,startSpeed,endSpeed) ); |
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| 80 | } |
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| 81 | }; |