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Common center point util

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This commit is contained in:
Mark Tolmacs 2025-02-28 19:39:04 +01:00
parent 0cd5a259ae
commit ca5e9c3ad9
5 changed files with 21 additions and 46 deletions
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16
packages/element/src/collision.ts
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@ -41,6 +41,7 @@ import {
import {
deconstructDiamondElement,
deconstructRectanguloidElement,
elementCenterPoint,
} from "./utils";
import type {
@ -191,10 +192,7 @@ const intersectRectanguloidWithLineSegment = (
l: LineSegment<GlobalPoint>,
offset: number = 0,
): GlobalPoint[] => {
const center = pointFrom<GlobalPoint>(
element.x + element.width / 2,
element.y + element.height / 2,
);
const center = elementCenterPoint(element);
// To emulate a rotated rectangle we rotate the point in the inverse angle
// instead. It's all the same distance-wise.
const rotatedA = pointRotateRads<GlobalPoint>(
@ -253,10 +251,7 @@ const intersectDiamondWithLineSegment = (
l: LineSegment<GlobalPoint>,
offset: number = 0,
): GlobalPoint[] => {
const center = pointFrom<GlobalPoint>(
element.x + element.width / 2,
element.y + element.height / 2,
);
const center = elementCenterPoint(element);
// Rotate the point to the inverse direction to simulate the rotated diamond
// points. It's all the same distance-wise.
@ -304,10 +299,7 @@ const intersectEllipseWithLineSegment = (
l: LineSegment<GlobalPoint>,
offset: number = 0,
): GlobalPoint[] => {
const center = pointFrom<GlobalPoint>(
element.x + element.width / 2,
element.y + element.height / 2,
);
const center = elementCenterPoint(element);
const rotatedA = pointRotateRads(l[0], center, -element.angle as Radians);
const rotatedB = pointRotateRads(l[1], center, -element.angle as Radians);