| import { quadraticProjectPoint } from '../core/curve'; |
| /** |
| * 二次贝塞尔曲线描边包含判断 |
| * @param {number} x0 |
| * @param {number} y0 |
| * @param {number} x1 |
| * @param {number} y1 |
| * @param {number} x2 |
| * @param {number} y2 |
| * @param {number} lineWidth |
| * @param {number} x |
| * @param {number} y |
| * @return {boolean} |
| */ |
| |
| export function containStroke(x0, y0, x1, y1, x2, y2, lineWidth, x, y) { |
| if (lineWidth === 0) { |
| return false; |
| } |
| |
| var _l = lineWidth; // Quick reject |
| |
| if (y > y0 + _l && y > y1 + _l && y > y2 + _l || y < y0 - _l && y < y1 - _l && y < y2 - _l || x > x0 + _l && x > x1 + _l && x > x2 + _l || x < x0 - _l && x < x1 - _l && x < x2 - _l) { |
| return false; |
| } |
| |
| var d = quadraticProjectPoint(x0, y0, x1, y1, x2, y2, x, y, null); |
| return d <= _l / 2; |
| } |