Function isPointInTriangle

isPointInTriangle(
    p: VectorLike,
    a: VectorLike,
    b: VectorLike,
    c: VectorLike,
    inwardAdjustment?: number,
): boolean
Determines if a point lies within a triangle in 2D space. Inspired by: https://stackoverflow.com/a/9755252/5946596
Parameters
- p: VectorLike
  The point to check [x, y].
- a: VectorLike
  Vertex A of the triangle [x, y].
- b: VectorLike
  Vertex B of the triangle [x, y].
- c: VectorLike
  Vertex C of the triangle [x, y].
- inwardAdjustment: number = 1e-6
  Scales inward adjustment relative to distance for edge handling (default: 1e-6).
Returns boolean
True if the point is inside the triangle or on one of its edges; otherwise, false.
Example
```
isPointInTriangle([0.25, 0.25], [0, 0], [1, 0], [0, 1]); // Returns true
```
- Defined in index.ts:463