初始化

康凯

2022-05-20 aa4c235a8ca67ea8b731f90c951a465e92c0a865

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
/**
 * 直线
 * @module zrender/graphic/shape/Line
 */
 
import Path from '../Path';
import {subPixelOptimizeLine} from '../helper/subPixelOptimize';
 
// Avoid create repeatly.
var subPixelOptimizeOutputShape = {};
 
export default Path.extend({
 
    type: 'line',
 
    shape: {
        // Start point
        x1: 0,
        y1: 0,
        // End point
        x2: 0,
        y2: 0,
 
        percent: 1
    },
 
    style: {
        stroke: '#000',
        fill: null
    },
 
    buildPath: function (ctx, shape) {
        var x1;
        var y1;
        var x2;
        var y2;
 
        if (this.subPixelOptimize) {
            subPixelOptimizeLine(subPixelOptimizeOutputShape, shape, this.style);
            x1 = subPixelOptimizeOutputShape.x1;
            y1 = subPixelOptimizeOutputShape.y1;
            x2 = subPixelOptimizeOutputShape.x2;
            y2 = subPixelOptimizeOutputShape.y2;
        }
        else {
            x1 = shape.x1;
            y1 = shape.y1;
            x2 = shape.x2;
            y2 = shape.y2;
        }
 
        var percent = shape.percent;
 
        if (percent === 0) {
            return;
        }
 
        ctx.moveTo(x1, y1);
 
        if (percent < 1) {
            x2 = x1 * (1 - percent) + x2 * percent;
            y2 = y1 * (1 - percent) + y2 * percent;
        }
        ctx.lineTo(x2, y2);
    },
 
    /**
     * Get point at percent
     * @param  {number} percent
     * @return {Array.<number>}
     */
    pointAt: function (p) {
        var shape = this.shape;
        return [
            shape.x1 * (1 - p) + shape.x2 * p,
            shape.y1 * (1 - p) + shape.y2 * p
        ];
    }
});