site/j2s/java/awt/geom/FlatteningPathIterator.js

   1 Clazz.declarePackage ("java.awt.geom");
   2 Clazz.load (["java.awt.geom.PathIterator"], "java.awt.geom.FlatteningPathIterator", ["java.lang.IllegalArgumentException", "java.util.NoSuchElementException", "java.awt.geom.CubicCurve2D", "$.QuadCurve2D"], function () {
   3 c$ = Clazz.decorateAsClass (function () {
   4 this.src = null;
   5 this.squareflat = 0;
   6 this.limit = 0;
   7 this.hold = null;
   8 this.curx = 0;
   9 this.cury = 0;
  10 this.movx = 0;
  11 this.movy = 0;
  12 this.holdType = 0;
  13 this.holdEnd = 0;
  14 this.holdIndex = 0;
  15 this.levels = null;
  16 this.levelIndex = 0;
  17 this.done = false;
  18 Clazz.instantialize (this, arguments);
  19 }, java.awt.geom, "FlatteningPathIterator", null, java.awt.geom.PathIterator);
  20 Clazz.prepareFields (c$, function () {
  21 this.hold =  Clazz.newDoubleArray (14, 0);
  22 });
  23 Clazz.makeConstructor (c$,
  24 function (src, flatness) {
  25 this.construct (src, flatness, 10);
  26 }, "java.awt.geom.PathIterator,~N");
  27 Clazz.makeConstructor (c$,
  28 function (src, flatness, limit) {
  29 if (flatness < 0.0) {
  30 throw  new IllegalArgumentException ("flatness must be >= 0");
  31 }if (limit < 0) {
  32 throw  new IllegalArgumentException ("limit must be >= 0");
  33 }this.src = src;
  34 this.squareflat = flatness * flatness;
  35 this.limit = limit;
  36 this.levels =  Clazz.newIntArray (limit + 1, 0);
  37 this.next (false);
  38 }, "java.awt.geom.PathIterator,~N,~N");
  39 Clazz.defineMethod (c$, "getFlatness",
  40 function () {
  41 return Math.sqrt (this.squareflat);
  42 });
  43 Clazz.defineMethod (c$, "getRecursionLimit",
  44 function () {
  45 return this.limit;
  46 });
  47 Clazz.defineMethod (c$, "getWindingRule",
  48 function () {
  49 return this.src.getWindingRule ();
  50 });
  51 Clazz.defineMethod (c$, "isDone",
  52 function () {
  53 return this.done;
  54 });
  55 Clazz.defineMethod (c$, "ensureHoldCapacity",
  56 function (want) {
  57 if (this.holdIndex - want < 0) {
  58 var have = this.hold.length - this.holdIndex;
  59 var newsize = this.hold.length + 24;
  60 var newhold =  Clazz.newDoubleArray (newsize, 0);
  61 System.arraycopy (this.hold, this.holdIndex, newhold, this.holdIndex + 24, have);
  62 this.hold = newhold;
  63 this.holdIndex += 24;
  64 this.holdEnd += 24;
  65 }}, "~N");
  66 Clazz.defineMethod (c$, "next",
  67 function () {
  68 this.next (true);
  69 });
  70 Clazz.defineMethod (c$, "next",
  71  function (doNext) {
  72 var level;
  73 if (this.holdIndex >= this.holdEnd) {
  74 if (doNext) {
  75 this.src.next ();
  76 }if (this.src.isDone ()) {
  77 this.done = true;
  78 return;
  79 }this.holdType = this.src.currentSegment (this.hold);
  80 this.levelIndex = 0;
  81 this.levels[0] = 0;
  82 }switch (this.holdType) {
  83 case 0:
  84 case 1:
  85 this.curx = this.hold[0];
  86 this.cury = this.hold[1];
  87 if (this.holdType == 0) {
  88 this.movx = this.curx;
  89 this.movy = this.cury;
  90 }this.holdIndex = 0;
  91 this.holdEnd = 0;
  92 break;
  93 case 4:
  94 this.curx = this.movx;
  95 this.cury = this.movy;
  96 this.holdIndex = 0;
  97 this.holdEnd = 0;
  98 break;
  99 case 2:
 100 if (this.holdIndex >= this.holdEnd) {
 101 this.holdIndex = this.hold.length - 6;
 102 this.holdEnd = this.hold.length - 2;
 103 this.hold[this.holdIndex + 0] = this.curx;
 104 this.hold[this.holdIndex + 1] = this.cury;
 105 this.hold[this.holdIndex + 2] = this.hold[0];
 106 this.hold[this.holdIndex + 3] = this.hold[1];
 107 this.hold[this.holdIndex + 4] = this.curx = this.hold[2];
 108 this.hold[this.holdIndex + 5] = this.cury = this.hold[3];
 109 }level = this.levels[this.levelIndex];
 110 while (level < this.limit) {
 111 if (java.awt.geom.QuadCurve2D.getFlatnessSq (this.hold, this.holdIndex) < this.squareflat) {
 112 break;
 113 }this.ensureHoldCapacity (4);
 114 java.awt.geom.QuadCurve2D.subdivide (this.hold, this.holdIndex, this.hold, this.holdIndex - 4, this.hold, this.holdIndex);
 115 this.holdIndex -= 4;
 116 level++;
 117 this.levels[this.levelIndex] = level;
 118 this.levelIndex++;
 119 this.levels[this.levelIndex] = level;
 120 }
 121 this.holdIndex += 4;
 122 this.levelIndex--;
 123 break;
 124 case 3:
 125 if (this.holdIndex >= this.holdEnd) {
 126 this.holdIndex = this.hold.length - 8;
 127 this.holdEnd = this.hold.length - 2;
 128 this.hold[this.holdIndex + 0] = this.curx;
 129 this.hold[this.holdIndex + 1] = this.cury;
 130 this.hold[this.holdIndex + 2] = this.hold[0];
 131 this.hold[this.holdIndex + 3] = this.hold[1];
 132 this.hold[this.holdIndex + 4] = this.hold[2];
 133 this.hold[this.holdIndex + 5] = this.hold[3];
 134 this.hold[this.holdIndex + 6] = this.curx = this.hold[4];
 135 this.hold[this.holdIndex + 7] = this.cury = this.hold[5];
 136 }level = this.levels[this.levelIndex];
 137 while (level < this.limit) {
 138 if (java.awt.geom.CubicCurve2D.getFlatnessSq (this.hold, this.holdIndex) < this.squareflat) {
 139 break;
 140 }this.ensureHoldCapacity (6);
 141 java.awt.geom.CubicCurve2D.subdivide (this.hold, this.holdIndex, this.hold, this.holdIndex - 6, this.hold, this.holdIndex);
 142 this.holdIndex -= 6;
 143 level++;
 144 this.levels[this.levelIndex] = level;
 145 this.levelIndex++;
 146 this.levels[this.levelIndex] = level;
 147 }
 148 this.holdIndex += 6;
 149 this.levelIndex--;
 150 break;
 151 }
 152 }, "~B");
 153 Clazz.defineMethod (c$, "currentSegment",
 154 function (coords) {
 155 if (this.isDone ()) {
 156 throw  new java.util.NoSuchElementException ("flattening iterator out of bounds");
 157 }var type = this.holdType;
 158 if (type != 4) {
 159 coords[0] = this.hold[this.holdIndex + 0];
 160 coords[1] = this.hold[this.holdIndex + 1];
 161 if (type != 0) {
 162 type = 1;
 163 }}return type;
 164 }, "~A");
 165 Clazz.defineMethod (c$, "currentSegment",
 166 function (coords) {
 167 if (this.isDone ()) {
 168 throw  new java.util.NoSuchElementException ("flattening iterator out of bounds");
 169 }var type = this.holdType;
 170 if (type != 4) {
 171 coords[0] = this.hold[this.holdIndex + 0];
 172 coords[1] = this.hold[this.holdIndex + 1];
 173 if (type != 0) {
 174 type = 1;
 175 }}return type;
 176 }, "~A");
 177 Clazz.defineStatics (c$,
 178 "GROW_SIZE", 24);
 179 });