[17562] | 1 | /** ---------------------------------------------------------------------------- |
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| 2 | * file : CanvasDraw.CommonClasses.js |
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| 3 | * file version : 1.0 |
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| 4 | * date : 2010-09-25 |
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| 5 | * ----------------------------------------------------------------------------- |
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| 6 | * author: grum at grum.fr |
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| 7 | * << May the Little SpaceFrog be with you >> |
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| 8 | * |
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| 9 | * This program is free software and is published under the terms of the GNU GPL |
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| 10 | * Please read CanvasDraw.ReadMe.txt file for more information |
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| 11 | * |
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| 12 | * ----------------------------------------------------------------------------- |
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| 13 | * |
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| 14 | * dependencies : none |
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| 15 | * |
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| 16 | * ----------------------------------------------------------------------------- |
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| 17 | * |
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| 18 | * provided classes : |
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| 19 | * - CDOrigin |
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| 20 | * . setX(value) |
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| 21 | * . setY(value) |
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| 22 | * . getX() |
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| 23 | * . getY() |
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| 24 | * |
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| 25 | * - CDPoint(x,y) |
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| 26 | * . x |
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| 27 | * . y |
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| 28 | * |
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| 29 | * - CDBoundBox() |
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| 30 | * . xMin |
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| 31 | * . yMin |
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| 32 | * . xMax |
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| 33 | * . yMax |
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| 34 | * . width |
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| 35 | * . height |
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| 36 | * |
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| 37 | * - CDRPoint(x,y,r) |
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| 38 | * . x |
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| 39 | * . y |
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| 40 | * . r |
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| 41 | * |
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| 42 | * - CDGradientStep(step, color) |
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| 43 | * . step |
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| 44 | * . color |
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| 45 | * |
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| 46 | * - CDTransformMatrix() |
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| 47 | * . get |
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| 48 | * . rotation(angle) |
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| 49 | * . scale(scaleX,scaleY) |
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| 50 | * . translation(x,y) |
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| 51 | * . identity |
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| 52 | * . apply |
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| 53 | * |
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| 54 | * ----------------------------------------------------------------------------- |
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| 55 | */ |
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| 56 | |
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| 57 | |
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| 58 | |
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| 59 | /** |
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| 60 | * The CDOrigin class give methods to manage origin values on abscissa an ordinate |
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| 61 | * It's used to determinate objects origin when positionning them |
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| 62 | |
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| 63 | * |
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| 64 | * |
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| 65 | * Object public properties |
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| 66 | * - x : String "left" | "middle" | "right" |
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| 67 | * origin on the abscissa |
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| 68 | * default "left" |
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| 69 | * |
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| 70 | * - y : String "top" | "middle" | "bottom" |
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| 71 | * origin on the ordinate |
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| 72 | * default "top" |
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| 73 | * |
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| 74 | * |
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| 75 | * Object public functions & methods |
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| 76 | * This object don't have any public functions & methods |
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| 77 | */ |
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| 78 | function CDOrigin () { |
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| 79 | |
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| 80 | this.properties = { |
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| 81 | x:"left", |
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| 82 | y:"top" |
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| 83 | } |
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| 84 | |
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| 85 | this.setX = function(value) |
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| 86 | { |
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| 87 | if((value=="left")||(value=="right")||(value=="middle")) this.properties.x = value; |
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| 88 | return(this.properties.x); |
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| 89 | } |
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| 90 | |
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| 91 | |
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| 92 | this.setY = function (value) |
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| 93 | { |
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| 94 | if((value=="top")||(value=="bottom")||(value=="middle")) this.properties.y = value; |
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| 95 | return(this.properties.y); |
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| 96 | } |
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| 97 | } |
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| 98 | |
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| 99 | /** |
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| 100 | * this CDPoint is used to define a coordinate |
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| 101 | */ |
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| 102 | function CDPoint (x,y) { |
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| 103 | this.x=x; |
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| 104 | this.y=y; |
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| 105 | } |
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| 106 | |
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| 107 | /** |
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| 108 | * this CDBoundBox is used to define a bound box |
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| 109 | */ |
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| 110 | function CDBoundBox () { |
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| 111 | this.properties = { |
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| 112 | min:new CDPoint(NaN,NaN), |
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| 113 | max:new CDPoint(NaN,NaN), |
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| 114 | size:new CDPoint(NaN,NaN) |
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| 115 | }; |
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| 116 | |
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| 117 | this.destroy = function () |
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| 118 | { |
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| 119 | delete this.properties.min; |
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| 120 | delete this.properties.max; |
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| 121 | delete this.properties.size; |
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| 122 | delete this.properties; |
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| 123 | } |
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| 124 | |
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| 125 | this.reset = function (value) |
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| 126 | { |
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| 127 | this.properties.min.x=NaN; |
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| 128 | this.properties.min.y=NaN; |
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| 129 | this.properties.max.x=NaN; |
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| 130 | this.properties.max.y=NaN; |
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| 131 | this.properties.size.x=NaN; |
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| 132 | this.properties.size.y=NaN; |
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| 133 | } |
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| 134 | |
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| 135 | this.copy = function (value) |
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| 136 | { |
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| 137 | if(value instanceof CDBoundBox) |
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| 138 | { |
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| 139 | this.properties.min.x=value.properties.min.x; |
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| 140 | this.properties.min.y=value.properties.min.y; |
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| 141 | this.properties.max.x=value.properties.max.x; |
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| 142 | this.properties.max.y=value.properties.max.y; |
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| 143 | this.properties.size.x=value.properties.size.x; |
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| 144 | this.properties.size.y=value.properties.size.y; |
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| 145 | } |
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| 146 | } |
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| 147 | |
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| 148 | this.applyTransformMatrix = function (value) |
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| 149 | { |
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| 150 | var tmpPt=[new CDPoint(), new CDPoint(), new CDPoint(), new CDPoint()], |
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| 151 | tmpPos=new CDPoint(); |
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| 152 | if(value instanceof CDTransformMatrix) |
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| 153 | { |
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| 154 | |
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| 155 | tmpPt[0].x=this.properties.min.x; |
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| 156 | tmpPt[0].y=this.properties.min.y; |
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| 157 | tmpPt[1].x=this.properties.max.x; |
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| 158 | tmpPt[1].y=this.properties.max.y; |
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| 159 | tmpPt[2].x=this.properties.min.x; |
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| 160 | tmpPt[2].y=this.properties.max.y; |
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| 161 | tmpPt[3].x=this.properties.max.x; |
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| 162 | tmpPt[3].y=this.properties.min.y; |
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| 163 | /* |
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| 164 | value.translation(this.properties.min.x, this.properties.min.y); |
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| 165 | tmpPos.x=this.properties.min.x; |
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| 166 | tmpPos.y=this.properties.min.y; |
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| 167 | tmpPt[0].x=0; |
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| 168 | tmpPt[0].y=0; |
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| 169 | tmpPt[1].x=this.properties.size.x; |
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| 170 | tmpPt[1].y=this.properties.size.y; |
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| 171 | tmpPt[2].x=0; |
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| 172 | tmpPt[2].y=this.properties.size.y; |
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| 173 | tmpPt[3].x=this.properties.size.x; |
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| 174 | tmpPt[3].y=0; |
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| 175 | */ |
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| 176 | |
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| 177 | this.reset(); |
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| 178 | for(var i=0;i<4;i++) |
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| 179 | { |
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| 180 | tmpPt[i]=value.apply(tmpPt[i]); |
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| 181 | this.setX(tmpPt[i].x); |
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| 182 | this.setY(tmpPt[i].y); |
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| 183 | } |
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| 184 | |
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| 185 | } |
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| 186 | } |
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| 187 | |
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| 188 | this.isNull = function () |
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| 189 | { |
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| 190 | return( |
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| 191 | (isNaN(this.properties.size.x)) || |
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| 192 | (isNaN(this.properties.size.y)) || |
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| 193 | ((this.properties.size.x+this.properties.size.y)==0) |
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| 194 | ); |
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| 195 | } |
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| 196 | |
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| 197 | this.setX = function (value) |
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| 198 | { |
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| 199 | if(isNaN(this.properties.min.x) && isNaN(this.properties.max.x)) |
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| 200 | { |
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| 201 | this.setXMin(value); |
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| 202 | this.setXMax(value); |
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| 203 | } |
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| 204 | else if(value<this.properties.min.x) |
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| 205 | this.setXMin(value) |
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| 206 | else if(value>this.properties.max.x) |
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| 207 | this.setXMax(value); |
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| 208 | } |
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| 209 | |
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| 210 | this.setXMin = function (value) |
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| 211 | { |
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| 212 | if(value<this.properties.min.x || this.properties.min.x==this.properties.max.x || isNaN(this.properties.min.x)) |
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| 213 | { |
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| 214 | this.properties.min.x=value; |
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| 215 | if(this.properties.max.x<this.properties.min.x || isNaN(this.properties.max.x)) this.properties.max.x=this.properties.min.x; |
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| 216 | this.properties.size.x=this.properties.max.x-this.properties.min.x; |
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| 217 | } |
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| 218 | } |
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| 219 | |
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| 220 | this.setXMax = function (value) |
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| 221 | { |
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| 222 | if(value>this.properties.max.x || this.properties.min.x==this.properties.max.x || isNaN(this.properties.max.x)) |
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| 223 | { |
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| 224 | this.properties.max.x=value; |
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| 225 | if(this.properties.min.x>this.properties.max.x || isNaN(this.properties.min.x)) this.properties.min.x=this.properties.max.x; |
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| 226 | this.properties.size.x=this.properties.max.x-this.properties.min.x; |
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| 227 | } |
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| 228 | } |
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| 229 | |
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| 230 | this.setWidth = function (value) |
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| 231 | { |
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| 232 | if(value>0 && value>this.properties.size.x) |
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| 233 | { |
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| 234 | this.properties.size.x=value; |
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| 235 | this.properties.max.x=this.properties.min.x+value; |
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| 236 | } |
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| 237 | } |
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| 238 | |
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| 239 | this.setY = function (value) |
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| 240 | { |
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| 241 | if(isNaN(this.properties.min.y) && isNaN(this.properties.max.y)) |
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| 242 | { |
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| 243 | this.setYMin(value); |
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| 244 | this.setYMax(value); |
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| 245 | } |
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| 246 | else if(value<this.properties.min.y) |
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| 247 | this.setYMin(value) |
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| 248 | else if(value>this.properties.max.y) |
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| 249 | this.setYMax(value); |
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| 250 | } |
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| 251 | |
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| 252 | this.setYMin = function (value) |
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| 253 | { |
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| 254 | if(value<this.properties.min.y || this.properties.min.y==this.properties.max.y || isNaN(this.properties.min.y)) |
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| 255 | { |
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| 256 | this.properties.min.y=value; |
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| 257 | if(this.properties.max.y<this.properties.min.y || isNaN(this.properties.max.y)) this.properties.max.y=this.properties.min.y; |
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| 258 | this.properties.size.y=this.properties.max.y-this.properties.min.y; |
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| 259 | } |
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| 260 | } |
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| 261 | |
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| 262 | this.setYMax = function (value) |
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| 263 | { |
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| 264 | if(value>this.properties.max.y || this.properties.min.y==this.properties.max.y || isNaN(this.properties.max.y)) |
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| 265 | { |
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| 266 | this.properties.max.y=value; |
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| 267 | if(this.properties.min.y>this.properties.max.y || isNaN(this.properties.min.y)) this.properties.min.y=this.properties.max.y; |
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| 268 | this.properties.size.y=this.properties.max.y-this.properties.min.y; |
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| 269 | } |
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| 270 | } |
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| 271 | |
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| 272 | this.setHeight = function (value) |
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| 273 | { |
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| 274 | if(value>0 && value>this.properties.size.y) |
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| 275 | { |
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| 276 | this.properties.size.y=value; |
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| 277 | this.properties.max.y=this.properties.min.y+value; |
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| 278 | } |
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| 279 | } |
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| 280 | } |
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| 281 | |
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| 282 | |
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| 283 | /** |
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| 284 | * this CDRPoint is used to define a radial coordinate (for radial gradient) |
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| 285 | */ |
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| 286 | function CDRPoint (x,y,r) { |
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| 287 | this.x=x; |
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| 288 | this.y=y; |
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| 289 | this.r=r; |
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| 290 | } |
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| 291 | |
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| 292 | /** |
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| 293 | * this CDGradientStep is used to defined a gradient step |
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| 294 | */ |
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| 295 | function CDGradientStep (step,color) { |
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| 296 | this.step=step; |
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| 297 | this.color=color; |
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| 298 | } |
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| 299 | |
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| 300 | |
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| 301 | |
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| 302 | |
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| 303 | /** |
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| 304 | * returns an object {r:RR, g:GG, b:BB} from a color string #RRGGBB |
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| 305 | * |
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| 306 | * if the given color is not a color, return r:0, g:0, b:0 |
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| 307 | * |
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| 308 | * @param String value : color value |
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| 309 | */ |
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| 310 | function colorHexToRGBInt(value) { |
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| 311 | returned={r:0, g:0, b:0} |
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| 312 | |
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| 313 | re=/#([0-9A-F][0-9A-F])([0-9A-F][0-9A-F])([0-9A-F][0-9A-F])/i; |
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| 314 | rgb=re.exec(value); |
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| 315 | if(rgb!=null) |
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| 316 | { |
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| 317 | returned.r=parseInt('0x'+rgb[1]); |
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| 318 | returned.g=parseInt('0x'+rgb[2]); |
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| 319 | returned.b=parseInt('0x'+rgb[3]); |
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| 320 | } |
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| 321 | return(returned); |
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| 322 | } |
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| 323 | |
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| 324 | |
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| 325 | /** |
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| 326 | * returns a rgba() color |
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| 327 | * |
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| 328 | * @param String color : a #rrggbb color value |
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| 329 | * @param Float opacity : the opacity |
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| 330 | * @return String : |
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| 331 | */ |
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| 332 | function toRGBA(color, opacity) { |
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| 333 | rgb=colorHexToRGBInt(color); |
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| 334 | return('rgba('+rgb.r+', '+rgb.g+', '+rgb.b+', '+opacity+')'); |
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| 335 | } |
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| 336 | |
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| 337 | |
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| 338 | |
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| 339 | /** |
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| 340 | * returns true if given color is a valid color string #rrggbb |
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| 341 | * |
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| 342 | * @param String value : color value |
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| 343 | */ |
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| 344 | function isValidColor(value) { |
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| 345 | re=/#([0-9A-F][0-9A-F])([0-9A-F][0-9A-F])([0-9A-F][0-9A-F])/i; |
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| 346 | if(re.exec(value)!=null) return(true); |
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| 347 | return(false); |
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| 348 | } |
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| 349 | |
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| 350 | /** |
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| 351 | * returns true if given opacity is valid |
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| 352 | * |
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| 353 | * @param Float value : color value |
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| 354 | */ |
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| 355 | function isValidOpacity(value) { |
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| 356 | if((value>=0)&&(value<=1)) return(true); |
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| 357 | return(false); |
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| 358 | } |
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| 359 | |
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| 360 | |
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| 361 | /** |
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| 362 | * matrix usage |
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| 363 | */ |
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| 364 | function CDTransformMatrix() |
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| 365 | { |
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| 366 | this.matrix=[]; |
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| 367 | |
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| 368 | this.identity = function () |
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| 369 | { |
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| 370 | // matrix[y][x] |
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| 371 | this.matrix= [ |
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| 372 | [1,0,0], |
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| 373 | [0,1,0] |
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| 374 | ]; |
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| 375 | }; |
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| 376 | |
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| 377 | this.get = function () |
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| 378 | { |
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| 379 | return(this.matrix); |
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| 380 | } |
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| 381 | |
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| 382 | this.rotation = function (angle) |
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| 383 | { |
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| 384 | var angleRad=angle*Math.PI/180, |
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| 385 | sinus=Math.sin(angleRad), |
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| 386 | cosinus=Math.cos(angleRad), |
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| 387 | returned=[[0,0],[0,0]]; |
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| 388 | |
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| 389 | returned[0][0]=this.matrix[0][0]*cosinus+this.matrix[1][0]*sinus; |
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| 390 | returned[1][0]=-this.matrix[0][0]*sinus+this.matrix[1][0]*cosinus; |
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| 391 | returned[0][1]=this.matrix[0][1]*cosinus+this.matrix[1][1]*sinus; |
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| 392 | returned[1][1]=-this.matrix[0][1]*sinus+this.matrix[1][1]*cosinus; |
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| 393 | |
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| 394 | this.matrix[0][0]=returned[0][0]; |
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| 395 | this.matrix[0][1]=returned[0][1]; |
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| 396 | this.matrix[1][0]=returned[1][0]; |
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| 397 | this.matrix[1][1]=returned[1][1]; |
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| 398 | } |
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| 399 | |
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| 400 | this.scale = function (scaleX, scaleY) |
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| 401 | { |
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| 402 | this.matrix[0][0]*=scaleX; |
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| 403 | this.matrix[1][1]*=scaleY; |
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| 404 | |
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| 405 | this.matrix[0][2]*=scaleX; |
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| 406 | this.matrix[1][2]*=scaleY; |
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| 407 | } |
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| 408 | |
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| 409 | this.translation = function (x, y) |
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| 410 | { |
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| 411 | this.matrix[0][2]+=x; |
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| 412 | this.matrix[1][2]+=y; |
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| 413 | } |
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| 414 | |
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| 415 | this.apply = function (point) |
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| 416 | { |
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| 417 | var returned=new CDPoint(); |
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| 418 | |
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| 419 | if(point instanceof CDPoint) |
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| 420 | { |
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| 421 | returned.x=(point.x * this.matrix[0][0] + point.y * this.matrix[0][1])+this.matrix[0][2]; |
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| 422 | returned.y=(point.x * this.matrix[1][0] + point.y * this.matrix[1][1])+this.matrix[1][2]; |
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| 423 | } |
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| 424 | |
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| 425 | return(returned); |
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| 426 | } |
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| 427 | |
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| 428 | this.identity(); |
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| 429 | } |
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