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Schluffe
2026-02-18 20:35:44 +01:00
parent 966e83076f
commit 8ea950db5a
7 changed files with 120 additions and 80 deletions
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engine/lib/geometry.ts
+32 -32
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@@ -1,5 +1,5 @@
import type { AABB } from "#/engine/AABB.ts";
import type { Circle } from "#/engine/Circle.ts";
import type { Rect } from "#/engine/Rect";
import type { Vector } from "#/engine/Vector.ts";
export function isPointInCircle(point: Vector, circle: Circle): boolean {
@@ -9,15 +9,15 @@ export function isPointInCircle(point: Vector, circle: Circle): boolean {
return dx * dx + dy * dy <= circle.radius ** 2;
}
export function isPointInAABB(point: Vector, aabb: AABB): boolean {
const rx = aabb.position.x;
const ry = aabb.position.y;
export function isPointInRect(point: Vector, rect: Rect): boolean {
const rx = rect.position.x;
const ry = rect.position.y;
return (
point.x >= rx &&
point.x <= rx + aabb.width &&
point.x <= rx + rect.width &&
point.y >= ry &&
point.y <= ry + aabb.height
point.y <= ry + rect.height
);
}
@@ -28,7 +28,7 @@ export function circleIntersectCircle(a: Circle, b: Circle): boolean {
return dx * dx + dy * dy <= (a.radius + b.radius) ** 2;
}
export function AABBIntersectAABB(a: AABB, b: AABB): boolean {
export function RectIntersectRect(a: Rect, b: Rect): boolean {
const ax = a.position.x;
const ay = a.position.y;
const bx = b.position.x;
@@ -42,14 +42,14 @@ export function AABBIntersectAABB(a: AABB, b: AABB): boolean {
);
}
export function circleIntersectAABB(circle: Circle, aabb: AABB): boolean {
export function circleIntersectRect(circle: Circle, rect: Rect): boolean {
const cx = circle.position.x;
const cy = circle.position.y;
const rx = aabb.position.x;
const ry = aabb.position.y;
const rx = rect.position.x;
const ry = rect.position.y;
const dx = cx - Math.max(rx, Math.min(cx, rx + aabb.width));
const dy = cy - Math.max(ry, Math.min(cy, ry + aabb.height));
const dx = cx - Math.max(rx, Math.min(cx, rx + rect.width));
const dy = cy - Math.max(ry, Math.min(cy, ry + rect.height));
return dx * dx + dy * dy <= circle.radius ** 2;
}
@@ -62,7 +62,7 @@ export function circleContainsCircle(a: Circle, b: Circle): boolean {
return a.radius >= b.radius + distance;
}
export function AABBContainsAABB(a: AABB, b: AABB): boolean {
export function RectContainsRect(a: Rect, b: Rect): boolean {
const ax = a.position.x;
const ay = a.position.y;
const bx = b.position.x;
@@ -76,44 +76,44 @@ export function AABBContainsAABB(a: AABB, b: AABB): boolean {
);
}
export function AABBContainsCircle(aabb: AABB, circle: Circle): boolean {
const rx = aabb.position.x;
const ry = aabb.position.y;
export function RectContainsCircle(rect: Rect, circle: Circle): boolean {
const rx = rect.position.x;
const ry = rect.position.y;
const cx = circle.position.x;
const cy = circle.position.y;
return (
rx <= cx - circle.radius &&
rx + aabb.width >= cx + circle.radius &&
rx + rect.width >= cx + circle.radius &&
ry <= cy - circle.radius &&
ry + aabb.height >= cy + circle.radius
ry + rect.height >= cy + circle.radius
);
}
export function circleContainsAABB(circle: Circle, aabb: AABB): boolean {
const radiusSquare = circle.radius ** 2;
export function circleContainsRect(circle: Circle, rect: Rect): boolean {
const radSquare = circle.radius ** 2;
const dax = aabb.position.x - circle.position.x;
const day = aabb.position.y - circle.position.y;
if (dax * dax + day * day > radiusSquare) {
const dax = rect.position.x - circle.position.x;
const day = rect.position.y - circle.position.y;
if (dax * dax + day * day > radSquare) {
return false;
}
const dbx = aabb.position.x + aabb.width - circle.position.x;
const dby = aabb.position.y - circle.position.y;
if (dbx * dbx + dby * dby > radiusSquare) {
const dbx = rect.position.x + rect.width - circle.position.x;
const dby = rect.position.y - circle.position.y;
if (dbx * dbx + dby * dby > radSquare) {
return false;
}
const dcx = aabb.position.x - circle.position.x;
const dcy = aabb.position.y + aabb.height - circle.position.y;
if (dcx * dcx + dcy * dcy > radiusSquare) {
const dcx = rect.position.x - circle.position.x;
const dcy = rect.position.y + rect.height - circle.position.y;
if (dcx * dcx + dcy * dcy > radSquare) {
return false;
}
const ddx = aabb.position.x + aabb.width - circle.position.x;
const ddy = aabb.position.y + aabb.height - circle.position.y;
if (ddx * ddx + ddy * ddy > radiusSquare) {
const ddx = rect.position.x + rect.width - circle.position.x;
const ddy = rect.position.y + rect.height - circle.position.y;
if (ddx * ddx + ddy * ddy > radSquare) {
return false;
}