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| var curve = require("../core/curve");
|
| /**
| * 三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} x3
| * @param {number} y3
| * @param {number} lineWidth
| * @param {number} x
| * @param {number} y
| * @return {boolean}
| */
| function containStroke(x0, y0, x1, y1, x2, y2, x3, y3, lineWidth, x, y) {
| if (lineWidth === 0) {
| return false;
| }
|
| var _l = lineWidth; // Quick reject
|
| if (y > y0 + _l && y > y1 + _l && y > y2 + _l && y > y3 + _l || y < y0 - _l && y < y1 - _l && y < y2 - _l && y < y3 - _l || x > x0 + _l && x > x1 + _l && x > x2 + _l && x > x3 + _l || x < x0 - _l && x < x1 - _l && x < x2 - _l && x < x3 - _l) {
| return false;
| }
|
| var d = curve.cubicProjectPoint(x0, y0, x1, y1, x2, y2, x3, y3, x, y, null);
| return d <= _l / 2;
| }
|
| exports.containStroke = containStroke;
|
|
