[Feature request]normal Vector with 3d raycast

markusT · August 5, 2019, 2:01pm

In CocosCreator 2.1.2 the raycast for 3d does not return the normal vector of the surface hit by the ray.
Please add the normal vector to the returning object for further calculations.

Thanks

github.com

cocos-creator/engine/blob/eb801df31c8982650279ffa09730420943ccb100/cocos2d/core/geom-utils/intersect.js


const Aabb = require('./aabb');
const Ray = require('./ray');
const Triangle = require('./triangle');

import gfx from '../../renderer/gfx';
import RecyclePool from '../../renderer/memop/recycle-pool';

const mat4 = cc.vmath.mat4;
const vec3 = cc.vmath.vec3;

/**
 * !#en 3D intersection helper class
 * !#zh 辅助类，用于测试 3D 物体是否相交
 * @class geomUtils.intersect
 * @static
 */
let intersect = {};

/**

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