本教程是由cmiVFX机构出品的cmiVFX Houdini Caustics教程，Houdini焦散教程，时长：3小时29分，教程使用软件：Houdini，作者：Georges Nakhle，格式：mp4视频，语言：英语。

Houdini 是一个特效方面非常强大的软件。许多电影特效都是由它完成：指环王中“甘道夫”放的那些“魔法礼花”，还有“水马”冲垮“戒灵”的场面，后天中的龙卷风等等，a52的汽车广告，反正只要是涉及DD公司制作的好莱坞一线大片，几乎都会有Houdini参与和应用。

Houdini不光只适用于视觉特效的制作，随着HOUDINI适用于各种平台，并且出现了很多的HOUDINI培训教学，HOUDINI开始进入了动态图像设计领域。因为其自身的流程化特性，加上其强大的动力学系统，让HOUDINI在数据可视化方面占有一席重要的地位，让图形设计师能够通过它表达自己的观点。

cmiVFX Houdini Caustics

Setting Up

Knowing how to setup the scene is a very critical step to get good refractions and reflections, then after that caustics, so first you will learn how and why to setup the scene the way it is, and how to define the interior and exterior of your surfaces.

Materials

Understanding the creation of refractive materials for the water and the glass objects are the soul of a proper caustic effect, so you`ll learn it and assign them to their corresponding objects.

Photons

In real life they are the main actor behind all the lights we see and interact with. To be able to create caustics first of all, photons have to be shot into the scene. here you will learn how to shoot the photons into the scene and how to visualize them.

Optimizations

Now that the photons are in the scene, in this part other textures and materials will be assigned, then those photons will be used to create caustics either by using the Micropolygon, raytracing or the PBR engine. then optimization and improvements techniques will be discussed.

About The Author

Georges Nakhle, lebanese, and has a masters degree in mechanical engineering. he has a wide artistic and scientific knowledge, he began his art steps with traditional painting and sculpting then gained a diploma in dramatic monologue (acting -singing), he has worked as a writer and perfomer in radio and TV. combining arts and science led him to CG, so he mastered many tools including Maya and Houdini among others, he’s also a programmer so he’s currently working for Dassault rr-sc.com Systemes in Paris-France and he had also worked in combination between Dassault-Systemes and Mental Images the makers of mental-ray. He is very picky about the details and he believes that every small detail contributes to the finished product.