图片的 KineticJS 鼠标位置
KineticJS mouse position of image
我有这样一张图片
var image = new Kinetic.Image({
x : x,
y : y,
width : 1000,
height :100,
image : image,
});
如何根据图像获取鼠标位置。
根据这个例子,我可以获得位置 Object{0, 0} ~ {100, 1000}
我只找到了一个 api stage.getPointerPosition()
如果你想获得鼠标在 click
上的位置,那么你可以这样做:
image.on('click', function(){
var mousePos = youStage.getPointerPosition();
var p = { x: mousePos.x, y: mousePos.y }; // p is a clone of mousePos
var r = image.getAbsoluteTransform().copy().invert().point(mousePos);
});
请找到下面的工作示例,尽管它使用 KonvaJS,但概念是相同的。您还应该开始使用 Konva,因为它得到了很好的维护和记录。
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.4.0/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Image Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #F0F0F0;
}
</style>
</head>
<body>
<div id="container"></div>
<script>
var width = window.innerWidth;
var height = window.innerHeight;
var stage = new Konva.Stage({
container: 'container',
width: width,
height: height
});
var layer = new Konva.Layer();
var imageObj = new Image();
imageObj.onload = function() {
var yoda = new Konva.Image({
x: 50,
y: 50,
image: imageObj,
width: 106,
height: 118
});
yoda.on('click', function() {
var mousePos = stage.getPointerPosition();
var p = {
x: mousePos.x,
y: mousePos.y
}; // p is a clone of mousePos
var r = yoda.getAbsoluteTransform().copy().invert().point(mousePos);
console.log(r);
});
// add the shape to the layer
layer.add(yoda);
// add the layer to the stage
stage.add(layer);
};
imageObj.src = 'https://upload.wikimedia.org/wikipedia/en/thumb/9/9b/Yoda_Empire_Strikes_Back.png/220px-Yoda_Empire_Strikes_Back.png';
</script>
</body>
</html>
我有这样一张图片
var image = new Kinetic.Image({
x : x,
y : y,
width : 1000,
height :100,
image : image,
});
如何根据图像获取鼠标位置。 根据这个例子,我可以获得位置 Object{0, 0} ~ {100, 1000}
我只找到了一个 api stage.getPointerPosition()
如果你想获得鼠标在 click
上的位置,那么你可以这样做:
image.on('click', function(){
var mousePos = youStage.getPointerPosition();
var p = { x: mousePos.x, y: mousePos.y }; // p is a clone of mousePos
var r = image.getAbsoluteTransform().copy().invert().point(mousePos);
});
请找到下面的工作示例,尽管它使用 KonvaJS,但概念是相同的。您还应该开始使用 Konva,因为它得到了很好的维护和记录。
<!DOCTYPE html>
<html>
<head>
<script src="https://cdn.rawgit.com/konvajs/konva/1.4.0/konva.min.js"></script>
<meta charset="utf-8">
<title>Konva Image Demo</title>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
background-color: #F0F0F0;
}
</style>
</head>
<body>
<div id="container"></div>
<script>
var width = window.innerWidth;
var height = window.innerHeight;
var stage = new Konva.Stage({
container: 'container',
width: width,
height: height
});
var layer = new Konva.Layer();
var imageObj = new Image();
imageObj.onload = function() {
var yoda = new Konva.Image({
x: 50,
y: 50,
image: imageObj,
width: 106,
height: 118
});
yoda.on('click', function() {
var mousePos = stage.getPointerPosition();
var p = {
x: mousePos.x,
y: mousePos.y
}; // p is a clone of mousePos
var r = yoda.getAbsoluteTransform().copy().invert().point(mousePos);
console.log(r);
});
// add the shape to the layer
layer.add(yoda);
// add the layer to the stage
stage.add(layer);
};
imageObj.src = 'https://upload.wikimedia.org/wikipedia/en/thumb/9/9b/Yoda_Empire_Strikes_Back.png/220px-Yoda_Empire_Strikes_Back.png';
</script>
</body>
</html>