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Stop dividing by zero

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This commit is contained in:
Andras Schmelczer 2026-06-10 21:36:13 +01:00
parent 9a06d92ed7
commit bd2307f782
5 changed files with 20 additions and 10 deletions
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15
src/drawables/shapes/polygon-factory.ts
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@ -31,7 +31,8 @@ export const PolygonFactory = (
vec2 targetFromDelta = target - from;
vec2 toFromDelta = to - from;
float h = clamp(
dot(targetFromDelta, toFromDelta) / dot(toFromDelta, toFromDelta),
dot(targetFromDelta, toFromDelta)
/ max(dot(toFromDelta, toFromDelta), 0.00000001),
0.0, 1.0
);
@ -93,6 +94,10 @@ export const PolygonFactory = (
constructor(vertices: Array<vec2>) {
super(vertices);
if (vertices.length === 0) {
throw new Error('Polygons must have at least one vertex');
}
if (vertices.length > vertexCount) {
throw new Error(
`Too many vertices, expected ${vertexCount}, got ${vertices.length}`
@ -104,7 +109,7 @@ export const PolygonFactory = (
const startEnd = this.vertices[0];
let vb = startEnd;
let d = vec2.squaredDistance(target, vb);
let d = vec2.distance(target, vb);
let sign = 1;
for (let i = 1; i <= this.vertices.length; i++) {
@ -141,9 +146,9 @@ export const PolygonFactory = (
private get actualVertices(): Array<vec2> {
return this.vertices.length < vertexCount
? ([
...this.vertices,
...new Array(vertexCount - this.vertices.length).fill(this.vertices[0]),
] as Array<vec2>)
...this.vertices,
...new Array(vertexCount - this.vertices.length).fill(this.vertices[0]),
] as Array<vec2>)
: this.vertices;
}