Three. js source code annotation (23) Core/Face3.js

Three. js source code annotation (23) Core/Face3.js

 

Reprinted please keep this sentence: Wuji-this blog focuses on Agile development and mobile and IOT device research: data visualization, GOLANG, Html5, WEBGL, THREE. JS. Otherwise, the post from this blog will not be reprinted or reprinted. Thank you for your cooperation.

I also just started learning. Sorry for the errors in many places.

The following code is a comment on the Core/Face3.js file in the THREE. JS source code file.

More updates in: https://github.com/omni360/three.js.sourcecode

/*** @ Author mrdoob/http://mrdoob.com/* @ author alteredq/http://alteredqualia.com/* // Face3 object constructor. this interface is used to create a triangle object in a 3D space using parameters a, B, c, normal, color, and materialIndex. function functions of Face3 objects are implemented using a function prototype object constructed. //// usage: var a = 0, B = 1, c = 2; var normal = new THREE. vector3 (0, 1, 0); var color = new THREE. color (0xffaa00); var face = new THREE. face3 (a, B, c, normal, color, 0); // create a color 0xffaa00 composed of three points: a, B, and c. The normal point is normal, A triangle object with a material index of 0. //// usage: var a = 0, B = 1, c = 2; var normal1 = new THREE. vector3 (0, 1, 0), normal2 = new THREE. vector3 (0, 1, 0), normal3 = new THREE. vector3 (0, 1, 0); normal = new Array (normal1, normal2, normal3); var color1 = new THREE. color (0xffaa00), color2 = new THREE. color (0x00aaff), color3 = new THREE. color (0x00ffaa); var color = new Array (color1, color2, color3); var face = new THREE. face3 (a, B, c, normal, color, 0); // create a three-point combination of a, B, and c in the color 0xffaa00, 0x00aaff, 0x00ffaa, normal points to normal, and the material index is 0. *////Face3///Index of triangle corner ///Index of triangle Angle Point B ///Index of triangle Angle Point c ///Triangle normal vector, or vertex Normal Vector Array ///Triangle color value or vertex color value array ///Material Index THREE. face3 = function (a, B, c, normal, color, materialIndex) {this. a = a; // The index of triangle Vertex a this. B = B; // The index of triangle vertex B this. c = c; // The index of triangle vertex c this. normal = normal instanceof THREE. vector3? Normal: new THREE. Vector3 (); // normal vector of the triangle surface this. vertexNormals = normal instanceof Array? Normal: []; // the array of triangle vertex normal vectors. this. color = color instanceof THREE. Color? Color: new THREE. Color (); // the color of the triangle. this. vertexColors = color instanceof Array? Color: []; // array of vertex color values on the triangle surface this. vertexTangents = []; // this. materialIndex = materialIndex! = Undefined? MaterialIndex: 0; // triangle Material Index }; /*************************************** * ***** The following are functions provided by Face3 objects. **************************************** /THREE. face3.prototype = {constructor: THREE. face3, // constructor, returns a reference to the Face3 function that created this object/* clone method // clone method to clone a triangle object. *////Clone///
 
  
Returns a triangular area object.
 Clone: function () {var face = new THREE. face3 (this. a, this. b, this. c); face. normal. copy (this. normal); face. color. copy (this. color); face. materialIndex = this. materialIndex; for (var I = 0, il = this. vertexNormals. length; I <il; I ++) {face. vertexNormals [I] = this. vertexNormals [I]. clone () ;}for (var I = 0, il = this. vertexColors. length; I <il; I ++) {face. vertexColors [I] = this. vertexColors [I]. clone () ;}for (var I = 0, il = this. vertexTangents. length; I <il; I ++) {face. vertexTangents [I] = this. vertexTangents [I]. clone () ;}return face; // returns the cloned Triangle Surface object .}};

Wuji (http://blog.csdn.net/omni360)

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Reprinted please keep this sentence: Wuji-this blog focuses on Agile development and mobile and IOT device research: data visualization, GOLANG, Html5, WEBGL, THREE. JS. Otherwise, the post from this blog will not be reprinted or reprinted. Thank you for your cooperation.

The following code is a comment on the Core/Face3.js file in the THREE. JS source code file.

More updates in: https://github.com/omni360/three.js.sourcecode