@woosh/meep-engine/src/core/geom/3d/plane/orient3d_fast.d.ts

Pure JavaScript game engine. Fully featured and production ready.

/**
 * Non-robust
 *
 * Return a positive value if the point pd lies below the
 * plane passing through pa, pb, and pc; "below" is defined so
 * that pa, pb, and pc appear in counterclockwise order when
 * viewed from above the plane.  Returns a negative value if
 * pd lies above the plane.  Returns zero if the points are
 * coplanar.  The result is also a rough approximation of six
 * times the signed volume of the tetrahedron defined by the
 * four points.
 *
 * NOTE: ported from http://www.cs.cmu.edu/afs/cs/project/quake/public/code/predicates.c
 *
 * @param {number[]} points
 * @param {number} a index of point a
 * @param {number} b index of point b
 * @param {number} c index of point c
 * @param {number} d index of point d
 * @returns {number}
 */
export function orient3d_fast(points: number[], a: number, b: number, c: number, d: number): number;
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