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优化vector2构造函数

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This commit is contained in:
yhh
2021-05-24 17:20:27 +08:00
parent 9c7703eb2d
commit da3ab02a8d
20 changed files with 177 additions and 109 deletions
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12
source/src/Math/Bezier.ts
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@@ -96,16 +96,16 @@ module es {
private static recursiveGetOptimizedDrawingPoints(start: Vector2, firstCtrlPoint: Vector2, secondCtrlPoint: Vector2,
end: Vector2, points: Vector2[], distanceTolerance: number) {
// 计算线段的所有中点
let pt12 = Vector2.divide(Vector2.add(start, firstCtrlPoint), new Vector2(2));
let pt23 = Vector2.divide(Vector2.add(firstCtrlPoint, secondCtrlPoint), new Vector2(2));
let pt34 = Vector2.divide(Vector2.add(secondCtrlPoint, end), new Vector2(2));
let pt12 = Vector2.divideScaler(Vector2.add(start, firstCtrlPoint), 2);
let pt23 = Vector2.divideScaler(Vector2.add(firstCtrlPoint, secondCtrlPoint), 2);
let pt34 = Vector2.divideScaler(Vector2.add(secondCtrlPoint, end), 2);
// 计算新半直线的中点
let pt123 = Vector2.divide(Vector2.add(pt12, pt23), new Vector2(2));
let pt234 = Vector2.divide(Vector2.add(pt23, pt34), new Vector2(2));
let pt123 = Vector2.divideScaler(Vector2.add(pt12, pt23), 2);
let pt234 = Vector2.divideScaler(Vector2.add(pt23, pt34), 2);
// 最后再细分最后两个中点。如果我们满足我们的距离公差，这将是我们使用的最后一点。
let pt1234 = Vector2.divide(Vector2.add(pt123, pt234), new Vector2(2));
let pt1234 = Vector2.divideScaler(Vector2.add(pt123, pt234), 2);
// 试着用一条直线来近似整个三次曲线
let deltaLine = Vector2.subtract(end, start);