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Animating a bone system

From: Flash CS4 Professional Tools for Character Animation

Video: Animating a bone system

In this movie we will look at animating bone systems. On the Stage here I have a spider and, by the way, if you are following along you can open up Animating_Bones.fla from the Chapter_ 03 folder. You can also just create a spider type movie clip on the Stage. So I am going to double click the movie clip, and here we have three layers: body, and legs, and shadow. So let's take a look at the legs. The legs are actually instances of the same movie clips and that movie clip is called "Leg Animation." So now we are going to do is animate the leg inside of that movie clip and that animation will apply to all the legs of the spider. So I am going to double click the leg in the front. Now I am going to use the Zoom tool, zoom-in and I am going to create an Armature animation. To do that, the first thing I am going to do is use the Bone tool and then define my bone system.

Animating a bone system

In this movie we will look at animating bone systems. On the Stage here I have a spider and, by the way, if you are following along you can open up Animating_Bones.fla from the Chapter_ 03 folder. You can also just create a spider type movie clip on the Stage. So I am going to double click the movie clip, and here we have three layers: body, and legs, and shadow. So let's take a look at the legs. The legs are actually instances of the same movie clips and that movie clip is called "Leg Animation." So now we are going to do is animate the leg inside of that movie clip and that animation will apply to all the legs of the spider. So I am going to double click the leg in the front. Now I am going to use the Zoom tool, zoom-in and I am going to create an Armature animation. To do that, the first thing I am going to do is use the Bone tool and then define my bone system.

So I am going to start from the inside of the leg where its connected to the body, click and drag to where the leg bends and then I am going to click and drag again to basically the foot area. So now I have two layers. I am going to delete the empty layer and I have my Armature layer here. Now what I will do is animate the Armature. So you are going to go to Frame 5 and then I am going to use the Selection tool and then click and drag to move the bone. Notice here that the bone is kind of misaligned, what I am going to do is move the first bone up a little bit and then I am going to hold the Command key and then I can move the leg bone.

Also what I am going to do is hold the Command key and move the big leg bone out to the left a little bit. So, of course, to make up for that I'll need to move this smaller leg bones as well, okay. So there I have my animation and then I am going to make the animation of the leg coming back in. So I am going to go to Frame 8. I am going to bend the leg back up in a little. I am going to hold Command on my keyboard and that is Ctrl on the PC and then move the leg in. Then I will go to the last frame of the animation and move the leg up and then I hold Command on my keyboard to move the leg right where I want.

Now I am going to test the movie to preview the animation, Command+Enter on the Mac, Ctrl+Enter on the PC. So looks like the animation looks pretty good except for those parts where the back of the leg is sticking now. So I am going to find those parts. It looks like its sticking out on Frame 8. So I hold the Command on my keyboard and then move the short leg to cover that up and I will preview the other frames and that looks good. So I will test the movie again. It looks like all the legs are moving okay now.

So whenever you create an Armature you can animate it by just moving the play head to the appropriate keyframe and then moving the Armature however you would like, if you need to fine-tune your Armature animation you can hold Command or Ctrl on the keyboard and then click and drag to move the different parts of your armature.

Show transcript

This video is part of

Image for Flash CS4 Professional Tools for Character Animation
Flash CS4 Professional Tools for Character Animation

38 video lessons · 24429 viewers

Todd Perkins
Author

 
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  1. 2m 44s
    1. Welcome
      42s
    2. Using the example files
      46s
    3. Getting into this course
      1m 16s
  2. 39m 5s
    1. Reviewing motion tweens
      2m 32s
    2. Adjusting motion tweens in the Property Inspector
      3m 55s
    3. Working property keyframes
      5m 18s
    4. Controlling easing in the Motion Editor
      3m 28s
    5. Creating custom easing in the Motion Editor
      4m 36s
    6. Squashing and stretching with custom easing
      5m 33s
    7. Adding shadows
      2m 6s
    8. Encapsulating animations
      2m 39s
    9. Randomizing animations with graphic symbols
      2m 16s
    10. Stretching animations
      1m 31s
    11. Saving for previous versions of Flash
      1m 50s
    12. Converting animations to ActionScript code
      3m 21s
  3. 19m 43s
    1. Adding a perspective shadow
      3m 40s
    2. Nesting animations
      4m 26s
    3. Syncing audio
      4m 8s
    4. Adding 3D rotation
      5m 38s
    5. Using 3D layers
      1m 51s
  4. 17m 9s
    1. Animating a bone system
      3m 22s
    2. Adding easing to an armature animation
      1m 39s
    3. Creating complex armature animations
      2m 25s
    4. Creating bounce
      2m 53s
    5. Adding bones to shapes
      3m 19s
    6. Adding 3D animation to a spider
      2m 19s
    7. Creating interactive bones
      1m 12s
  5. 19m 2s
    1. Animating masks
      4m 3s
    2. Animating masked content
      5m 7s
    3. Creating shadows with masks
      4m 29s
    4. Creating an iris effect using masks
      5m 23s
  6. 7m 30s
    1. Saving motion presets
      1m 43s
    2. Exporting and importing motion presets
      3m 19s
    3. Applying and adjusting motion presets
      2m 28s
  7. 11m 40s
    1. Understanding walk cycles
      2m 45s
    2. Creating a walk cycle
      5m 16s
    3. Adding body movement
      3m 39s
  8. 19s
    1. Goodbye
      19s

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