# `math.ray.intersectPlane`

> Contract 2.0.0 · package sha256 `a857eca95b35921109faf997094bb4192f12527d9d0fcd4be7e97f06425bad6e` · generated from `math.d.ts` by `services/onsite-scripter/scripts/build-contract-docs.mjs`; edit the source, not this file.

Method of [`math.ray`](math.ray.md) · stable · since 2.0.0

```ts
intersectPlane(r: Ray, plane: {
  normal: Point3;
  constant: number;
}): Point3 | null;
```

Where the ray meets the plane, or null when parallel or behind its origin.

## Generic-API test (spec 3.1)

| Rule | Result |
| --- | --- |
| 1. Neutral name | pass: `intersectPlane` names no product |
| 2. A precedent | not recorded: no ledger row (coverage.json) names this member or its owner |
| 3. Two apps, or labs | not recorded: no ledger row names this member or its owner |
| 4. The cheaper fix first | not recorded per member (Appendix B decides it per need) |