问在z轴上使用HTML5画布？以及如何移动画布的眼睛视图？

EN

var canvas = {
    obj: document.querySelector("canvas"),
    models: [{
        start: [10, 10, 10],
        end: [1, 20, 20],
        color: "silver",
    },{ start: [30, 30, 30],
        end: [10, 1, 10],
        color: "silver",
    },{ start: [60, 60, 60],
        end: [10, 10, 10],
        color: "silver",
    }],
    data: {},
    draw: (function () {
        if (this.obj.getContext) {
            this.data.ctx = this.obj.getContext('2d');
            this.models.forEach(function () {
                canvas.data.ctx.fillStyle = this.color;
                canvas.data.ctx.fillRect(this["start"][0], this["start"][1], this["end"][0], this["end"][1]);
            }));
        }
        return this
    })
}.draw()