活塞引擎动画

核心提示： 5. Now we are going to rotate crankshaft. Before you do that, link Point 01 to crankshaft. Select crankshaft object. Activate Select And Rotate t

5. Now we are going to rotate crankshaft. Before you do that, link Point 01 to crankshaft. Select crankshaft object. Activate Select And Rotate tool, and in Left viewport try to rotate crankshaft. Notice that all bones are moving with crankshaft rotation. This happens because other helpers (Point 02 and Point 03) are linked to Point 01.

6. Select Point 02. And click Unlink selection button. Also unlink Point 03. Now, try to rotate crankshaft. After that, don't forget to undo. Make sure all bones are back to their original position.

7. Next, we are ready to animate crankshaft object. Activate Auto Key. Move slider to frame 100. Using Select and rotate tool, rotate 360°. You can activate Angle Snap toggle to create precise rotation if necessary. When finished, play animation. You can see piston is not staying in vertical axis. We will fix that later.

8. Make sure Auto Key is still active. Select Point 02, and activate Select and Move Tool. Move slider to frame 25. In Left viewport, move Point 02 up or down until piston stays in vertical axis. Repeat the same process in frame 50 and 75. When finished, select keyframe in frame 0, Shift drag to create its clone in frame 100. After that, turn off Auto Key..