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Blender is a powerful open-source tool for 2D and 3D graphics, full-on animation, compositing, and post-production. It is used to create movies and special effects, even in HD. In Blender Essential Training, Roger Wickes offers new Blender users a thorough explanation of its interface, tools, and features. He also demonstrates practical techniques and shows how to access the online and openndash;content resources of this amazing tool. Specific 3D techniques covered include navigating in 3D space, using cameras and lights, and rendering. Roger demonstrates how to rig, animate, and composite a character over live action. Exercise files accompany the course.
This video talks about how to control the particles once we have now established the emitter system. So now that our particle system is build, as you can see, it just creates a standard plume of particles in the standard up direction, which is cute, but not really very realistic. So let's go ahead and add some forces, and force fields that will control the particles. As with all particle systems, you have to have a shared layer between the particle system mesh that actually emits the particles and the force field or any other object that you're going to use to try to control those particles.
So if we select here, we're going to use a big old wind plane here, like a big old fan and this fan is down here on Layer 11. As is this little box in back. And then the Emitter itself is on Layers 1 and 11. So when we render, we're going to render layers 1 but not layer 11. So these force field planes will not show up in the final render, but yet they can still have effect on the particles.
So the first thing we want to do is add a wind effect. All the effects are down here, under the Physics buttons, under Fields, just go ahead and click Wind. The Strength of the Wind, whether it's a soft breeze or a gale force hurricane, 0.5 is a nice gentle breeze. As the wind blows these smoke particles into Mancandy's face. I'm using the Mancandy face in mesh right here. A big shot out to the developer who brought that to life and has release that to the public demand.
I encourage you to look it up, and download it and use the rig. As the wind blows over the back of the Mancandy, it's going to create a vacuum, which we can simulate using a Magnetic field. Again, the Strength is the same and then these over here control whether or not particles are certain distance away from the field are affected by the force field. Last but not least, above the head, whenever you have smoke coming out of a round circular thing, you get a vortex field kind of going on, because of vortex forces that happen.
So I'm going to scale this up a little bit, maybe make this a little bigger. So now you can see that it's pretty much right above the trashcan and we just select Vortex. A Strength of 5 is pretty strong and with the Vortex field, I often like to set up a distance so that as the smoke comes up, out of the can, it is caught then and starts to swirl right around in here, so this number here is the radius. So we're going to go 1, 2, 3, 4, up 5.
So let's set this to 5 units and this little yellow circle shows you the radius of influence. So now, as the particles come up out of the can, they're going to be caught by the wind and immediately blown and then the vortex will start to grab them and as they move their way down wind, then this magnet field will catch some of them and you end up with the simulation that we can show in the movie by coming over here to Compositing.
And by watching the movie, we can see the different forces that come into play. As the smoke comes up out of the can is caught by these invisible force fields that is blown down wind. So that's an example of how you control particles that once they are emitted by using the different force fields that are available in Blender.
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