Bouncing Balls
One ball is dropped. The other is thrown. Which ball will hit the ground first? Note:
For illustration purposes, the viewport background in this tutorial
has been set to black. Choose
File > Reset. In
the Create panel, choose Plane.
In
the Name and Color rollout, click the color swatch. Name the plane Floor: In
the Create panel, choose Sphere.
Click Create. A sphere appears in the Perspective viewport: In
the Name and Color rollout, name the sphere Launch Ball.
Press the space bar to lock the selection of the Launch Ball.
Turn on the Animate button and advance the time slider to frame 20:
Pan the Front viewport a little down and to the left. In
the Front viewport, move the ball to the right in X. Two
keys appear in the track bar: one at frame 0 and one at frame 20. The ball moves half way back: Move the ball upward in Z to make a nice arc: Scrub the time slider back and forth between frames 0 and 20. The ball follows the trajectory.
Click Open Track View.
In the toolbar, click Function Curves. The function curve for the Position controller appears:
In the
toolbar, click Parameter Curve Out-of-Range Types. The function curve repeats across the track view window: In
the toolbar, choose Edit Ranges. Close
the track view. The trags:
In the Name and Color rollout, select a bright blue color for the Drop Ball: In
the track bar, select the key at frame 10.
In
the Drop Ball:Position dialog box for key 1, set X = -50, Y = -50,
Z = 0. Then click the right arrow.
Select the Launch Ball. In
the track bar, select the key at frame 10. In
the Launch Ball:Position dialog box for key 1, set X = 0, Y = -50,
Z = 0. Then click the right arrow.
Click Time Configuation. Play the animation. The plays in a smooth, continuous loop.
At frame 20, your animation should look like this in the Front viewport:
Zoom
and pan the Perspective viewport so that your animation fits in
the view. Press
CTRL + C to match the camera to the viewport. Select
the camera. Your camera view changes to an orthographic view: Open the Render dialog box. Set the Time Output to Active Time Segment: In the Render dialog box, set the Output Size Width = 500, Height = 200: Close the Render dialog box.
Right-click on the camera viewport label and choose Configure. Right-click on the camera viewport label and choose Show Safe Frame: The
safe frame appears in the camera viewport.
Zoom
out of the Front viewport.
In
the Modify panel, turn on Cast Shadows.
Click Quick Render to test the lighting: Choose
Rendering > Environment.
Click Quick Render to test the lighting again: Open the Render dialog box. Click
the Files button.
In
the Video Compression dialog box, choose Microsoft Video 1.
Click OK and Close. Save
your scene file as Ballbounce.max.
When you are ready to render the animation, choose Quick Render.
After the animation finishes rendering, choose File > View File and select Ballbounce.avi. Watch your animation play!
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© 2000 Michele Matossian