Jquery 调整大小后,旋转定位点未固定在图像上
我有五个锚,中间一个是用来旋转的。它与原始尺寸配合得很好。但在调整大小后,当我单击它时,锚就会从图像上飞走。我确实把这个职位换成了新的Jquery 调整大小后,旋转定位点未固定在图像上,jquery,kineticjs,Jquery,Kineticjs,我有五个锚,中间一个是用来旋转的。它与原始尺寸配合得很好。但在调整大小后,当我单击它时,锚就会从图像上飞走。我确实把这个职位换成了新的 函数更新(activeAnchor){ var group=activeAnchor.getParent(); var topLeft=group.get('.topLeft')[0]; var topRight=group.get('.topRight')[0]; var bottomRight=group.get('.bottomRight')[0]; va
函数更新(activeAnchor){
var group=activeAnchor.getParent();
var topLeft=group.get('.topLeft')[0];
var topRight=group.get('.topRight')[0];
var bottomRight=group.get('.bottomRight')[0];
var bottomLeft=group.get('.bottomLeft')[0];
//var rotateAnchor=group.get('.rotateAnchor')[0];
var rotateAnchorNew=group.get('.rotateAnchorNew')[0];
var image=group.get('image')[0];
var anchorX=activeAnchor.getX();
var anchorY=activeAnchor.getY();
var imageWidth=image.getWidth();
var imageHeight=image.getHeight();
//更新锚点位置
开关(activeAnchor.getName()){
//案例“rotateAnchor”:
//中断;
案例“rotateAnchorNew”:
打破
案例“左上角”:
右上角。赛蒂(安科里);
左下角。setX(anchorX);
打破
案例“右上角”:
左上。赛蒂(安科里);
右下角。setX(anchorX);
打破
案例“右下角”:
右上角.setX(主播);
左下角。setY(anchorY);
打破
案例“左下角”:
左上角。setX(主播);
右下角。赛蒂(安科里);
打破
}
if(topRight.getX()
KineticJS根据偏移自动调整对象的左上位置
这是令人沮丧的,因为必须使用相同的偏移来设置旋转点
因此,很难将图像的[x,y,offsetX,offsetY]与定位点的[x,y]进行协调,尤其是当图像已调整大小并旋转时
如果您的图像或锚点意外“跳跃”,则您正在体验使用KineticJS偏移的副作用
这里有一种解决这一难题的方法:
- 将旋转点声明为图像的中心点
- 使用此中心点旋转点定位图像和定位点
- 激活任何定位后,使用此中心点重置图像的x、y和偏移
- 激活任何定位点后,相对于该中心点重新定位所有定位点
正文{填充:20px;背景:浅灰色}
#容器{
边框:实心1px绿色;
边缘顶部:10px;
宽度:400px;
高度:400px;
}
$(函数(){
//创建舞台和图层
var阶段=新的动力学阶段({
容器:'容器',
宽度:400,
身高:400
});
var layer=新的动能层();
阶段。添加(层);
//创建用于拖动或移动图像的锚点
var spotXY=新的动力学圆({
x:0,y:0,半径:10,
填充:“蓝色”,笔划:“黑色”,
德拉格布尔:是的
});
on(“dragmove”,function()){
setNode(image,this.x(),this.y(),image.width(),image.height(),image.rotation());
});
添加图层(spotXY);
//创建用于拖动并调整图像大小的锚点
var resizer=新的动力学圆({
x:0,y:0,半径:10,
填充:“红色”,笔划:“黑色”,
德拉格布尔:是的
});
on(“dragmove”,function()){
var dx=this.x()-spotXY.x();
var dy=this.y()-spotXY.y();
var w=数学sqrt(dx*dx+dy*dy)*2;
var h=w*hRatio;
setNode(image,spotXY.x(),spotXY.y(),w,h,image.rotation());
});
图层。添加(调整大小器);
//创建用于拖动和旋转图像的锚点
var旋转器=新的动力学圆({
x:0,y:0,半径:10,
填充:“金色”,笔划:“黑色”,
德拉格布尔:是的
});
旋转器。on(“拖动”,函数(){
var dx=this.x()-spotXY.x();
var dy=this.y()-spotXY.y();
变量角度=数学atan2(dy,dx)*180/数学PI;
setNode(image,spotXY.x(),spotXY.y(),image.width(),image.height(),angle);
});
层。添加(旋转器);
//始终根据图像的原始纵横比按比例调整图像大小
//此变量用于保持该比例
瓦赫拉蒂奥;
//加载图像
var img=新图像();
img.onload=启动;
img.src=”https://dl.dropboxusercontent.com/u/139992952/stackoverflow/facesSmall.png";
函数start(){
//保存图像原始纵横比
hRatio=img.高度/img.宽度;
//开始
loadK(150150);
};
函数加载k(x,y){
//创建一个图像元素
图像=新的动力学图像({
x:0,y:0,宽度:10,高度:10,
图片:img,
轮换:0,
});
图层。添加(图像);
//setNode将在需要时重置所有图像和定位属性
//这将在启动时设置初始属性
设置节点(图像,x,y,图像宽度,图像高度,45);
//
function update(activeAnchor) {
var group = activeAnchor.getParent();
var topLeft = group.get('.topLeft')[0];
var topRight = group.get('.topRight')[0];
var bottomRight = group.get('.bottomRight')[0];
var bottomLeft = group.get('.bottomLeft')[0];
//var rotateAnchor = group.get('.rotateAnchor')[0];
var rotateAnchorNew = group.get('.rotateAnchorNew')[0];
var image = group.get('Image')[0];
var anchorX = activeAnchor.getX();
var anchorY = activeAnchor.getY();
var imageWidth = image.getWidth();
var imageHeight = image.getHeight();
// update anchor positions
switch (activeAnchor.getName()) {
//case 'rotateAnchor':
// break;
case 'rotateAnchorNew':
break;
case 'topLeft':
topRight.setY(anchorY);
bottomLeft.setX(anchorX);
break;
case 'topRight':
topLeft.setY(anchorY);
bottomRight.setX(anchorX);
break;
case 'bottomRight':
topRight.setX(anchorX);
bottomLeft.setY(anchorY);
break;
case 'bottomLeft':
topLeft.setX(anchorX);
bottomRight.setY(anchorY);
break;
}
if (topRight.getX() < topLeft.getX() + minImgSize) {
topRight.setX(topLeft.getX() + minImgSize);
}
if (bottomRight.getX() < topLeft.getX() + minImgSize) {
bottomRight.setX(topLeft.getX() + minImgSize);
}
if (bottomRight.getY() < topLeft.getY() + minImgSize) {
bottomRight.setY(topLeft.getY() + minImgSize);
}
if (bottomLeft.getY() < topLeft.getY() + minImgSize) {
bottomLeft.setY(topLeft.getY() + minImgSize);
}
var width = topRight.getX() - topLeft.getX();
var height = bottomLeft.getY() - topLeft.getY();
image.setPosition({ x: topLeft.getPosition().x, y: (topLeft.getPosition().y) });
image.setWidth(width);
image.setHeight(height);
rotateAnchorNew.setX(width / 2 + topLeft.getX());
rotateAnchorNew.setY(height / 2 + topLeft.getY());
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script type="text/javascript" src="http://code.jquery.com/jquery.min.js"></script>
<script src="http://d3lp1msu2r81bx.cloudfront.net/kjs/js/lib/kinetic-v5.0.1.min.js"></script>
<style>
body{padding:20px;background:lightgray}
#container{
border:solid 1px green;
margin-top: 10px;
width:400px;
height:400px;
}
</style>
<script>
$(function(){
// create the stage and layer
var stage = new Kinetic.Stage({
container: 'container',
width: 400,
height: 400
});
var layer = new Kinetic.Layer();
stage.add(layer);
// create an anchor used to drag-move the image
var spotXY=new Kinetic.Circle({
x:0,y:0,radius:10,
fill: 'blue',stroke:'black',
draggable: true
});
spotXY.on("dragmove",function(){
setNode(image,this.x(),this.y(),image.width(),image.height(),image.rotation());
});
layer.add(spotXY);
// create an anchor used to drag-resize the image
var resizer=new Kinetic.Circle({
x:0,y:0,radius:10,
fill: 'red',stroke:'black',
draggable: true
});
resizer.on("dragmove",function(){
var dx=this.x()-spotXY.x();
var dy=this.y()-spotXY.y();
var w=Math.sqrt(dx*dx+dy*dy)*2;
var h=w*hRatio;
setNode(image,spotXY.x(),spotXY.y(),w,h,image.rotation());
});
layer.add(resizer);
// create an anchor used to drag-rotate the image
var rotator=new Kinetic.Circle({
x:0,y:0,radius:10,
fill: 'gold',stroke:'black',
draggable: true
});
rotator.on("dragmove",function(){
var dx=this.x()-spotXY.x();
var dy=this.y()-spotXY.y();
var angle=Math.atan2(dy,dx)*180/Math.PI;
setNode(image,spotXY.x(),spotXY.y(),image.width(),image.height(),angle);
});
layer.add(rotator);
// always resize the image proportionally to it's original aspect ratio
// this variable is used to keep that proportion
var hRatio;
// load the image
var img=new Image();
img.onload=start;
img.src="https://dl.dropboxusercontent.com/u/139992952/stackoverflow/facesSmall.png";
function start(){
// save the images original aspect ratio
hRatio=img.height/img.width;
// start
loadK(150,150);
};
function loadK(x,y){
// create an image element
image=new Kinetic.Image({
x:0,y:0,width:10,height:10,
image:img,
rotation:0,
});
layer.add(image);
// setNode will reset all image and anchor properties when needed
// This sets the initial properties at startup
setNode(image,x,y,img.width,img.height,45);
// make sure the anchors are on top of the z-index
spotXY.moveToTop();
rotator.moveToTop();
resizer.moveToTop();
layer.draw();
}
// Reset all image and anchor properties relative to the rotation point (x,y)
// This is the key to simplifying KineticJS transformations with anchors
function setNode(node,x,y,w,h,angle){
// reset all size and position properties on the image
node.width(w);
node.height(h);
node.x(x);
node.y(y);
node.offsetX(w/2);
node.offsetY(h/2);
node.rotation(angle);
// postion the move anchor
spotXY.position({x:x,y:y});
// calculate the radian angle of the image
var rAngle=angle*Math.PI/180;
// position the rotation anchor
var rotationRadius=(w/2+resizer.radius()*2);
var xx=x+rotationRadius*Math.cos(rAngle);
var yy=y+rotationRadius*Math.sin(rAngle);
rotator.position({x:xx,y:yy});
// position the resizing anchor
var xx=x+w/2*Math.cos(rAngle);
var yy=y+w/2*Math.sin(rAngle);
resizer.position({x:xx,y:yy});
layer.draw();
}
}); // end $(function(){});
</script>
</head>
<body>
<h4>Drag the dots to transform the image<br>Blue=Move, Red=Resize, Gold=Rotate<br>Image will always resize by maintaining aspect ratio</h4>
<div id="container"></div>
</body>
</html>