Beauty retouching is probably one of the most popular application areas in which Adobe Photoshop is used extensively. There are two simple reasons for that. First, Photoshop offers a variety of advanced tools to smooth out skin and hair, optimize body proportions and emphasize some beautiful details. And second, if you have some experience with Photoshop it is easy to learn the basics and quickly produce very impressive and beautiful results.
1- Curve Flow Force: Generated from tangent to curve
2- Curve Attraction Force: Generated by subtracting point position vectors from cloud point to closest point on curve
3- Axial Force: Generated by taking the cross product of vectors from forces 1 and 2
Bradley Gabe shows in his XSI 7 Video Tutorial how you can creates a static particle emission, then drives point animation using vectors pulled from curve tangency.
I get many questionsfrom friends and readers about good PhotoShop books they should read or which Tutorial sites they should use to learn more about PhotoShop.
I keep a list of PhotoShop books I recommend under PhotoShop books, mainly books I bought myself, read and successfull used in some projects .
Some PhotoShop books I recommend (available at amazon.com):
You find many great Tutorial websites that offer either printed or video tutorials for PhotoShop. As there are so many great ones here a small (and not complete) selection:
Mario Prang the key person behind Slash did release his second XSI Training DVD (more then 4 hours of XSI training). This time Mario show you how to use Rigid & Soft Bodies in XSI. The training which is in German provides you with an excellent overview on Rigid Bodies, Rigid Constraints and Soft Bodies. Slash is a certified Softimage Training Center who offers beginner, intermediate, and advanced courses for companies or individuals.
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