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Merge pull request #10 from steveruizok/vector
1.4.0
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| Original file line number | Diff line number | Diff line change |
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@@ -3,3 +3,5 @@ | |
| node_modules | ||
| dist | ||
| example/yarn.lock | ||
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| .vercel | ||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,93 @@ | ||
| // Some helpers for drawing SVGs. | ||
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| import * as vec from 'vec' | ||
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| // General | ||
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| export function ellipse(A: number[], r: number) { | ||
| return `M ${A[0] - r},${A[1]} | ||
| a ${r},${r} 0 1,0 ${r * 2},0 | ||
| a ${r},${r} 0 1,0 -${r * 2},0 ` | ||
| } | ||
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| export function dot(v: number[]) { | ||
| return ellipse(v, 3) | ||
| } | ||
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| export function moveTo(v: number[]) { | ||
| return `M ${v[0]},${v[1]} ` | ||
| } | ||
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| export function lineTo(v: number[]) { | ||
| return `L ${v[0]},${v[1]} ` | ||
| } | ||
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| export function line(a: number[], ...pts: number[][]) { | ||
| return moveTo(a) + pts.map(p => lineTo(p)).join() | ||
| } | ||
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| export function hLineTo(v: number[]) { | ||
| return `H ${v[0]},${v[1]} ` | ||
| } | ||
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| export function vLineTo(v: number[]) { | ||
| return `V ${v[0]},${v[1]} ` | ||
| } | ||
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| // /** | ||
| // * Return the path for a rectangle between two points. | ||
| // * @param a | ||
| // * @param b | ||
| // * @returns | ||
| // */ | ||
| // export function rectFromBounds(bounds: IBounds) { | ||
| // const { minX, maxX, minY, maxY } = bounds | ||
| // return [ | ||
| // moveTo([minX, maxX]), | ||
| // lineTo([maxX, minY]), | ||
| // lineTo([maxX, maxY]), | ||
| // lineTo([minX, minY]), | ||
| // closePath(), | ||
| // ].join(' ') | ||
| // } | ||
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| // /** | ||
| // * Return the path for a rectangle with a given point and size. | ||
| // * @param point | ||
| // * @param size | ||
| // * @returns | ||
| // */ | ||
| // export function rect(point: number[], size: number[]) { | ||
| // return rectFromBounds(getBoundsBetweenPoints(point, vec.add(point, size))) | ||
| // } | ||
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| export function bezierTo(A: number[], B: number[], C: number[]) { | ||
| return `C ${A[0]},${A[1]} ${B[0]},${B[1]} ${C[0]},${C[1]} ` | ||
| } | ||
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| // export function arcTo(C: number[], r: number, A: number[], B: number[]) { | ||
| // return [ | ||
| // // moveTo(A), | ||
| // 'A', | ||
| // r, | ||
| // r, | ||
| // 0, | ||
| // getSweep(C, A, B) > 0 ? '1' : '0', | ||
| // 0, | ||
| // B[0], | ||
| // B[1], | ||
| // ].join(' ') | ||
| // } | ||
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| export function closePath() { | ||
| return 'Z' | ||
| } | ||
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| export function rectTo(A: number[]) { | ||
| return ['R', A[0], A[1]].join(' ') | ||
| } | ||
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| export function getPointAtLength(path: SVGPathElement, length: number) { | ||
| const point = path.getPointAtLength(length) | ||
| return [point.x, point.y] | ||
| } |
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