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| Using PFlow particles to write ink on paper |
Posted: Sep 22, 2009
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In this set of videos, you will see how to use PFlow to write on paper from an animated pencil. In order to show the flexibility of this system, i will show you how to create a Spirograph and use the resulting pencil animation to draw on paper. Then, to challenge this system a bit, you'll see how to animate the paper using the cloth modifier and have the ink slowly dry on the paper as the paper is animated. IntroductionModeling the Spirograph : Gears and Radius
The Spirograph system involves modeling a set of interlocking gears that animate and interlock correctly. This in itself presents a challenge and needs to obey a set of rules
in order to work. In this video, you'll see the basic rules of an interlocking gear system as i start the modeling and the rigging of the Spirograph.
Modeling the Spirograph: Dents and Graphite Selection
The number of dents on the Spirograph elements needs to match perfectly in order for the animated system to look correct. In this video, you'll see how to setup the proper
amount of dents on the gear system and you'll see how to quickly extract the dents using the selections tools in Graphite.
Modeling the Spirograph : pen and paper
In this video, you'll see how to model the pen in order to use it for particles later and how to model the paper in order to be able to use the cloth modifier on it
later.
PFlow: put ink on paper
In this video, you'll see how to setup Pflow to have the pen write on the paper. Then, to put some challenge into the writing, you'll see how to setup the system so that the
ink spreads on the paper as time goes. This will create a very natural ink effect on the paper
PFlow and Cloth: animate the paper surface
When the drawing is complete, we want to animate the paper's surface with the cloth modifier so that it falls and then catches in the wind. When this happen, we want the fresh
ink to follow the paper as it is animated. You'll see how this is possible using the new Lock and Bound operator in Pflow.
Pflow : drying sliding ink
As the paper moves, if the ink is not totally dry, it will start to slide on the paper with the surface deformations and gravity. In this video, you'll see how to setup
another Lock and Bound operator to have the ink slowly move on the paper as it dries. Also, you'll see how some drops of ink may leave the paper surface as the get to the
border or are moving too fast.
Final Preview
When all the particle effects are working and the timing is right, it is good to try the system with more particles. In this last part, you'll see how to setup the final
particle count and turn on some hardware shading and camera effects to produce a nice looking final animation preview that will be captured straight from the viewport.
Virtual Conference next week (September 30th 2009)
Next week, i'll be doing a 3ds max 2010 presentation for a virtual event that you can attend FOR FREE! You can register and have more information on the agenda at www.autodesk.com/virtualentertainment . There will be all sorts of presentation on various subjects and software (Maya,
Softimage, Games, Films, TV, etc). There will also be a live chat where some of my colleagues and myself will answer your questions. It's worth your time investment! See you
next week!
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