完成世界书、骰子、apiconfig页面处理
This commit is contained in:
42
frontend/node_modules/points-on-curve/src/curve-to-bezier.ts
generated
vendored
Normal file
42
frontend/node_modules/points-on-curve/src/curve-to-bezier.ts
generated
vendored
Normal file
@@ -0,0 +1,42 @@
|
||||
import { Point } from './index.js';
|
||||
|
||||
function clone(p: Point): Point {
|
||||
return [...p] as Point;
|
||||
}
|
||||
|
||||
export function curveToBezier(pointsIn: Point[], curveTightness = 0): Point[] {
|
||||
const len = pointsIn.length;
|
||||
if (len < 3) {
|
||||
throw new Error('A curve must have at least three points.');
|
||||
}
|
||||
const out: Point[] = [];
|
||||
if (len === 3) {
|
||||
out.push(
|
||||
clone(pointsIn[0]),
|
||||
clone(pointsIn[1]),
|
||||
clone(pointsIn[2]),
|
||||
clone(pointsIn[2])
|
||||
);
|
||||
} else {
|
||||
const points: Point[] = [];
|
||||
points.push(pointsIn[0], pointsIn[0]);
|
||||
for (let i = 1; i < pointsIn.length; i++) {
|
||||
points.push(pointsIn[i]);
|
||||
if (i === (pointsIn.length - 1)) {
|
||||
points.push(pointsIn[i]);
|
||||
}
|
||||
}
|
||||
const b: Point[] = [];
|
||||
const s = 1 - curveTightness;
|
||||
out.push(clone(points[0]));
|
||||
for (let i = 1; (i + 2) < points.length; i++) {
|
||||
const cachedVertArray = points[i];
|
||||
b[0] = [cachedVertArray[0], cachedVertArray[1]];
|
||||
b[1] = [cachedVertArray[0] + (s * points[i + 1][0] - s * points[i - 1][0]) / 6, cachedVertArray[1] + (s * points[i + 1][1] - s * points[i - 1][1]) / 6];
|
||||
b[2] = [points[i + 1][0] + (s * points[i][0] - s * points[i + 2][0]) / 6, points[i + 1][1] + (s * points[i][1] - s * points[i + 2][1]) / 6];
|
||||
b[3] = [points[i + 1][0], points[i + 1][1]];
|
||||
out.push(b[1], b[2], b[3]);
|
||||
}
|
||||
}
|
||||
return out;
|
||||
}
|
||||
Reference in New Issue
Block a user