EaselJS - 在缩放图像上破碎平移

Question

我在此示例中无法修复平移 - 除非您移动缩放图像然后再次缩放(偏移设置为默认值并且视图跳转到初始位置 - http://jsfiddle.net/p2Qzg/),否则它可以正常工作.关于如何解决这个问题的任何想法？我一直试图解决这个问题三天,没有任何好结果.

    var canvas= document.getElementById("myCanvas");
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;   
var stage = new createjs.Stage("myCanvas");

function addCircle(r,x,y){
    var g=new createjs.Graphics().beginFill("#ff0000").drawCircle(0,0,r);
    var s=new createjs.Shape(g)
    s.x=x;
    s.y=y;
    stage.addChild(s);
    stage.update();
}

addCircle(10,200,100);
addCircle(5,canvas.width/2,canvas.height/2);
addCircle(3,400,400);

canvas.addEventListener("mousewheel", MouseWheelHandler, false);
canvas.addEventListener("DOMMouseScroll", MouseWheelHandler, false);

var zoom;

function MouseWheelHandler(e) {
    if(Math.max(-1, Math.min(1, (e.wheelDelta || -e.detail)))>0)
        zoom=1.1;
    else
        zoom=1/1.1;
    stage.regX += stage.mouseX - stage.regX;
    stage.regY += stage.mouseY - stage.regY;
    stage.x=stage.mouseX;
    stage.y=stage.mouseY;   
    stage.scaleX=stage.scaleY*=zoom;

    stage.update();

}


stage.addEventListener("stagemousedown", function(e) {
    var offset={x:stage.x-e.stageX,y:stage.y-e.stageY};
    stage.addEventListener("stagemousemove",function(ev) {
        stage.x = ev.stageX+offset.x;
        stage.y = ev.stageY+offset.y;
        stage.update();
    });
    stage.addEventListener("stagemouseup", function(){
        stage.removeAllEventListeners("stagemousemove");
    });
}); 

Answer 1

有点旧,但因为它仍然需要一个anwser:

伟大的json虽然小提琴.我在工作中使用它来修复bug.

只需更换:

  stage.regX += stage.mouseX - stage.regX;
  stage.regY += stage.mouseY - stage.regY;

使用以下代码行:

var local = stage.globalToLocal(stage.mouseX, stage.mouseY);
stage.regX=local.x;
stage.regY=local.y;

奇迹般有效.我分叉你的jsfiddle并相应地改变它. http://jsfiddle.net/kz0dL78k/