接着第三个教学讲解，我们将继续创建两个shader。其中我们会学习到如何使用VEX来实现一部分VOP NETWORK的数学计算，并且将它打包为一个VOP。

教师介绍:
Ari Danesh是一位有12年大学教学经验的视觉特效师与交互式设计师。他最近在UCLA Extension, Moorpark College, 还有CSUN，Ai Hollywood教授HOUDINI，他当前专注的是流程化建模与动画，粒子系统，动力学系统，还有植物仿真。Ari Danesh是SideFX的HOUDINI讲师。

A continuation of Lesson 3 we will create a couple more shaders. We will then look how we can take a section of the VOP network, as an example a section that contains a math equation, and rebuild it using VEX then package it into a VOP.

Instructor | Ari Danesh

Ari Danesh is a Visual FX artist and Interactive Designer with 12 years experience teaching at the University level. He has taught at UCLA Extension, Moorpark College, and most recently CSUN (California State University at Northridge) and Ai Hollywood. His current focus is in Procedural Modeling and Animation, Particle Systems, Dynamics and Plant Simulation. Ari Danesh is a SideFX Houdini instructor.