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grid support (1st iteration) (#1788)

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Co-authored-by: dwelle <luzar.david@gmail.com>
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Daishi Kato 2020-06-24 00:24:52 +09:00 • committed by GitHub
parent b6bf011d0d
commit baa8fb6c14
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14 changed files with 343 additions and 80 deletions
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14
src/math.ts
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@ -340,3 +340,17 @@ const doIntersect = (p1: Point, q1: Point, p2: Point, q2: Point) => {
return false;
};
export const getGridPoint = (
x: number,
y: number,
gridSize: number | null,
): [number, number] => {
if (gridSize) {
return [
Math.round(x / gridSize) * gridSize,
Math.round(y / gridSize) * gridSize,
];
}
return [x, y];
};