| 96 | } |
| 97 | |
| 98 | private void initPath() { |
| 99 | path_srarch = new Path(); |
| 100 | path_circle = new Path(); |
| 101 | |
| 102 | mMeasure = new PathMeasure(); |
| 103 | |
| 104 | // 注意,不要到360度,否则内部会自动优化,测量不能取到需要的数值 |
| 105 | RectF oval1 = new RectF(-50, -50, 50, 50); // 放大镜圆环 |
| 106 | path_srarch.addArc(oval1, 45, 359.9f); |
| 107 | |
| 108 | RectF oval2 = new RectF(-100, -100, 100, 100); // 外部圆环 |
| 109 | path_circle.addArc(oval2, 45, -359.9f); |
| 110 | |
| 111 | float[] pos = new float[2]; |
| 112 | |
| 113 | mMeasure.setPath(path_circle, false); // 放大镜把手的位置 |
| 114 | mMeasure.getPosTan(0, pos, null); |
| 115 | |
| 116 | path_srarch.lineTo(pos[0], pos[1]); // 放大镜把手 |
| 117 | |
| 118 | Log.i("TAG", "pos=" + pos[0] + ":" + pos[1]); |
| 119 | } |
| 120 | |
| 121 | private void initListener() { |
| 122 | mUpdateListener = new ValueAnimator.AnimatorUpdateListener() { |