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ID: FN1308001 Technique: HTML5 and JavaScript Library: EaselJS 0.7.0

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Matrix2D.decompose()�ス�ス�ス\�スb�スh
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  • x, y
  • scaleX, scaleY
  • skewX, skewY
  • rotation
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Matrix2D.transformPoint()�ス�ス�ス\�スb�スh�スy0.7.0�スz
�ス�ス�ス@ Matrix2D�スI�スu�スW�スF�スN�スg.transformPoint(x, y, pt)
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x, y �ス| �スマ奇ソス�スs�ス�スナ変奇ソス�ス�ス�ス�スxy�ス�ス�スW�スl�スB

pt �ス| �スマ奇ソス�ス�ス�ス�ス�ス�ス�スW�ス�スx�ス�スy�スフプ�ス�ス�スp�スe�スB�スノ納�ス゚て返ゑソスPoint�スワゑソス�ス�スObject�スC�ス�ス�スX�ス^�ス�ス�スX�スB�ス�ス�ス�ス�ス�ス�スネゑソス�スニ戻ゑソスl�スニなゑソスV�ス�ス�ス�スObject�スC�ス�ス�スX�ス^�ス�ス�スX�ス�ス�スツゑソス�ス�ス�ス�スB

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[*1] �ス{�スe�ス�ス�ス�ス�ス�ス�スフ「EaselJS v0.7.0 API Documentation�スv�ス�スMatrix2D.transformPoint()�ス�ス�ス\�スb�スh�スフ搾ソス�スノゑソス�ス�ス�ス�ス゚ゑソスl(�スuReturns�スv)�スフ撰ソス�ス�ス�スノ鯉ソス閧ェ�ス�ス�ス�スワゑソス�スB

Returns:
Point: This matrix. Useful for chaining method calls.

�ス�ス�ス\�スb�スh�ス�ス�スヤゑソス�スフは、Matrix2D�スI�スu�スW�スF�スN�スg("matrix")�スナはゑソス�ス�スワゑソス�ス�スB�スO�スq�スフとゑソス�ス�スu�スマ奇ソス�ス�ス�ス�ス�ス�ス�スW�スl�ス�スx�ス�スy�スフプ�ス�ス�スp�スe�スB�スノゑソス�スツオ�スu�スW�スF�スN�スg�スv�スナゑソス�スB�スf�ス[�ス^�ス^�ス�ス�ス�ス�ス�ス�ス�ス�スヘ「Point�スv�スノゑソス�ス�ス�ス�スネゑソス�スuObject�スv�スナゑソス�ス蛯、(�ス�ス�ス驍「�スヘ「Point | Object�スv)�スB


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Matrix2D�スI�スu�スW�スF�スN�スg�スフ変奇ソス�スs�ス�ス�スDisplayObject�スC�ス�ス�スX�ス^�ス�ス�スX�ス�スマ形�ス�ス�ス�ス�ス�ス�スニゑソス�スヘ、Matrix2D.decompose()�ス�ス�ス\�スb�スh�スフ茨ソス�ス�ス�スノイ�ス�ス�スX�ス^�ス�ス�スX�ス�スn�ス�ス�スト呼出�ス�ス�スワゑソス�スB�ス�ス�ス�スニ、�スマ奇ソス�スs�スゥら導�ス�ス�ス�ス�スハ置�ス�スL�スk�スA�スX�スホ、�ス�ス]�スネどのプ�ス�ス�スp�スe�スB�ス�スObject�スC�ス�ス�スX�ス^�ス�ス�スX�スノ与�ス�ス�ス�ス�スワゑソス�スB

Matrix2D�スI�スu�スW�スF�スN�スg.decompose(DisplayObject�スC�ス�ス�スX�ス^�ス�ス�スX)

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�スマ奇ソス�ス�ス�ス黷スxy�スv�ス�ス�スp�スe�スB�ス�ス�ス�ス�ス�ス�ス�ス�ス�スPoint�スネどのオ�スu�スW�スF�スN�スg�スヘ、�ス�ス3�ス�ス�ス�ス�スニゑソス�スト渡�ス�ス�スワゑソス�スB�ス�ス3�ス�ス�ス�ス�ス�ス�スネゑソス�スニ、xy�スv�ス�ス�スp�スe�スB�ス�ス[�ス゚ゑソス�スV�ス�ス�ス�スObject�スC�ス�ス�スX�ス^�ス�ス�スX�ス�ス�スヤゑソスワゑソス�スB


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  1. instance.addEventListener("click", transform);
  2. function transform(eventObject) {
  3.   var target = eventObject.target;
  4.   var mouseX = eventObject.stageX;
  5.   var mouseY = eventObject.stageY;
  6.   var matrix = target.getMatrix();
  7.   matrix.translate(-mouseX, -mouseY)
  8.   .rotate(Math.PI / 6)
  9.   .translate(mouseX, mouseY)
  10.   .decompose(target);
  11.   stage.update();
  12. }

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�スA�スj�ス�ス�ス[�スV�ス�ス�ス�ス�スノゑソス�ス驍ス�ス゚、Ticker.tick�スC�スx�ス�ス�スg�スノ�ソス�スX�スi�ス[�スヨ撰ソス(rotate())�ス�ス�ス�ス�ス�ス�スワゑソス(�ス�ス3�スs�ス�ス)�スB�ス�ス�スX�スi�ス[�スヨ撰ソス�スナは、Matrix2D�スI�スu�スW�スF�スN�スg�スヘ予�ス゚変撰ソス(matrix)�スノとゑソス�ストゑソス�ス�ス�スAMatrix2D.identity()�ス�ス�ス\�スb�スh�スノゑソス闖会ソス�ス�ス�ス�ス�ス�ス�ス�ス�ス�ス�ス�ス�ス[*2]�スAMatrix2D.rotate()�ス�ス�ス\�スb�スh�スナ回しまゑソス(�ス�ス2�ス�ス�ス�スム托ソス6�スs�ス�ス)[*3]�スB�ス�ス�ス�ス�スト、for�ス�ス�スナ配�ス�ス�スPoint�スI�スu�スW�スF�スN�スg�ス�ス�スラてゑソス�ス�ス�スノ趣ソスo�ス�ス�スAem>Matrix2D.transformPoint()�ス�ス�ス\�スb�スh�スナ変奇ソス�ス�ス�スワゑソス(�ス�ス7�ス`10�スs�ス�ス)�スB�スネゑソス�スA�ス�スo�ス�ス�ス�スPoint�スI�スu�スW�スF�スN�スg�ス�スxy�ス�ス�スW�ス�ス�ス�ス�スヨゑソス�ス驍ス�ス゚、�ス�ス�ス\�スb�スh�スフ托ソス3�ス�ス�ス�ス�スノオ�スu�スW�スF�スN�スg�ス�スn�ス�ス�ストゑソス�スワゑソス�スB

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�スR�ス[�スh002�ス�ス�スz�ス�スノ難ソス�ス黷スPoint�スI�スu�スW�スF�スN�スg�ス�スMatrix2D.transformPoint()�ス�ス�ス\�スb�スh�スナ会ソス
  1. var angle = Math.PI / 12;
  2. var matrix = new createjs.Matrix2D();
  3. createjs.Ticker.addEventListener("tick", rotate);
  4. function rotate(eventObject) {
  5.   var count = points.length;
  6.   matrix.identity().rotate(angle);
  7.   for (var i = 0; i < count; i++) {
  8.     var point = points[i];
  9.     matrix.transformPoint(point.x, point.y, point);
  10.   }
  11. }

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