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This course provides an overview of modeling, animating, and rendering 3D graphics in the open-source software Blender 2.6. Beginning with a tour of the Blender interface, author George Maestri shows how to create and edit basic objects, work with modifiers and subdivision surfaces, and apply materials and textures. The course also demonstrates lighting 3D scenes, setting up and using cameras, animating objects, and assembling basic character rigs.
One of the really nice things about Blender is that you can animate just about anything. Now we took a look at how to animate an object's position and orientation in space, but you can animate really any property of an object. Everything from the color of an object to the brightness of the light, really anything that you can add a number to, you can animate. So let's take a look at how to animate some lights in this scene to see how to animate things other than motion. Now I have this scene here, which is the car driving through the scene from the last lesson, and we have a light in that scene.
It's called point light. Now, if we want to see it, we can go ahead into our viewport and just turn on Textured mode and we can the brightness of the light in this mode. So you see we have an Energy value for this light that we can turn up and down. So let's go ahead and turn the light off and dim it back on. This Energy is kind of like the dimmer for a light, so let's go ahead and animate it. So we are going to go ahead and start with this at 0. Now I can either slide it to 0 or just type in 0, and once we do that, we need to set a keyframe.
Now we do this exactly the same way we did for position in the last one: we just hover the mouse over the value and hit the letter I on the keyboard. Now notice how that turns yellow, and that tells me that I have set a keyframe for that property. And you can also see the keyframe on the Timeline. So let's go forward to, say, frame 10 and turn up the lights. So I can just slide this up, but if I do, you'll see that I don't have a keyframe set, because I don't have automatic keyframing.
Now if I want, I can turn on automatic keyframing here and turn that light up. So you can see how this value automatically comes up, and now when I go over here, say to frame 40, I want to go ahead and keep this at that value. So if I want, I can turn this off and do it the same way. I can just hit I and again, that will just set the keyframe. So either way it works. So what we've done is we've turned on the light, we've kept the light on until frame 40, and then a frame 50, I am going to go ahead and just type in 0 and then hit I, since I am already here, to turn that off.
So let's go ahead and just play this. And as you can see, the lights go on and off. Now we don't just have to animate single values; we can also animate things such as color. So we can, for example, change the color of the light. So let's go to frame 15 here, and we have the color of the light in this value here. Now again, all we have to do is hover our mouse over the value and hit I and it sets.
So let's go into the middle of this animation and set the color to a different value. Let's go ahead and turn the light into kind of a reddish color here, and go ahead and hit I. Now notice how when I animate color, it creates a yellow box around the color. It doesn't actually make the box itself a color, because we want to be able to see that color. So we can go ahead and turn that light back to white if we want. Again, just go ahead and max it all out here and then again just hit I. So once we've done that, you can see how I've turned the lights up, changed the color, changed the color back, and turned the lights off again.
Now that's just one small example of how to animate things other than position. You can animate almost any variable or any property in Blender using these methods.
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