如何在 canvas 2d 中制作等距立方体？我关注了True Isometric Projection with HTML5 Canvas获得立方体的顶部，但是如何获得左侧和右侧？
注意:我想使用具有完整事件处理功能的 Kinetic.js 对象。
这是我现在拥有的:
<!DOCTYPE HTML>
<html>
<head>
<style>
body {
margin: 0px;
padding: 0px;
}
canvas {
border: 1px solid #9C9898;
}
</style>
<script src="http://www.html5canvastutorials.com/libraries/kinetic-v4.0.0.js"></script>
<script>
window.onload = function() {
var stage = new Kinetic.Stage({
container: "container",
width: 578,
height: 200,
//scale: [1, 0.5],
//scale: [1, 0.86062],
//rotation: -30 * Math.PI /180,
});
var layer = new Kinetic.Layer({
scale: [1,0.5],
});
var foo = false;
layer.beforeDraw(function(){
if (!foo) {
var context = this.getContext();
var sx = 45*Math.PI/180;
// .75 horizontal shear
var sy = 0;
// no vertical shear
// apply custom transform
//context.transform(1, sy, sx, 1, 0, 0);
//context.scale(1, 0.5);
//context.rotate(45 * Math.PI /180);
//var angle = 30;
//context.setTransform(1, Math.tan(30), 0, 1, 0, 0);
}
foo = true;
});
layer.afterDraw(function(){
var context = this.getContext();
//context.scale(1, 2);
//context.rotate(-45 * Math.PI /180);
});
var rect = new Kinetic.Rect({
x: 200,
y: 100,
width: 50,
height: 50,
fill: "blue",
stroke: "black",
strokeWidth: 4,
rotation: -45 * Math.PI /180,
//scale: [1, 0.5],
});
rect.on("mouseover", function() {
//alert(this.getFill());
this.setFill("red");
layer.draw();
});
rect.on("mouseout", function() {
//alert(this.getFill());
this.setFill("blue");
layer.draw();
});
// add the shape to the layer
layer.add(rect);
// add the layer to the stage
stage.add(layer);
};
</script>
最佳答案
关于javascript - html Canvas 中的等距立方体投影，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12221192/