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本教程是由Digital-Tutors机构出品的Houdini高低模代理模拟技术训练视频教程,Digital-Tutors Advanced Rigid Body Dynamics using Proxy Objects,时长:2小时53分,大小:1.2 GB,MP4高清视频格式,附工程源文件,教程使用软件:Houdini 14,作者:Jeff Wolverton,共22个章节,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。

Digital-Tutors机构是号称全球最大的CG付费教程网站,2000多万次视频播放记录,顶级客户的优秀项目实例,被誉为教学和娱乐结合的最好的教程,RenderMan创建人称之为“完美的学习站点”,成立至今已经有12年之久,内容集中在视频制作和游戏制作两大板块,其网站完整的教学的理念,先进的技术支持(他们甚至开启了移动手机看教程的计划,支持IPAD/IPHONE/ANDROID),都让人耳目一新。尤其是多层级的教学难度设置,有趣的考试内容,时不时的竞赛,让DT成为非常活跃的一个CG机构。

Digital-Tutors Advanced Rigid Body Dynamics using Proxy Objects

In this Houdini tutorial, we’ll examine multiple methods for accomplishing high resolution object simulation in Houdini using lower resolution proxy objects. In practice, when designing effects for motion pictures, we’re often given very hi-res geometry (cars, rocks, etc) and are expected to simulate them in high quantities, which can be prohibitively slow using the actual objects.

By making lower resolution proxies to use as RBD objects (or from a particle sim-and-replace) and replacing them post-simulation, the process can be greatly sped up. Different methods can be utilized for simulating multiple objects, packed objects, and varying topologies (for example, we wouldn’t want every rock to be identical, or a parking lot full of many copies of the exact same car).

At many studios, custom software is used due to these problems. Specifically, we’ll do two test cases to demonstrate all the details and trade-offs of using the various methods. In the first test case we’ll make a volcano spewing out hi-res rocks and finally we’ll create a “Carnado” (a tornado hitting a parking lot of cars, throwing hi-res car models all over the place, simulated with low-res proxy cars.)


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