@woosh/meep-engine/src/engine/graphics/geometry/MikkT/m_getNormal.js

Pure JavaScript game engine. Fully featured and production ready.

import { array_copy } from "../../../../core/collection/array/array_copy.js";

/**
 *
 * @param {SMikkTSpaceContext} pContext
 * @param {number[]|{0:number,1:number,2:number}} fvNormOut
 * @param {number} iFace
 * @param {number} iVert
 * @returns {void}
 */
export function m_getNormal(pContext, fvNormOut, iFace, iVert) {
    // figure out which vertex it is
    const vertex_index = pContext.geometry_buffer_index[iFace * 3 + iVert];

    array_copy(pContext.geometry_buffer_vertex_normal, vertex_index * 3, fvNormOut, 0, 3);
}