活塞引擎动画

核心提示： 9. Play animation. Piston movement is now better, but is still not right. This is happen because spline is forming a curvy shape. Thus, we need t

9. Play animation. Piston movement is now better, but is still not right. This is happen because spline is forming a curvy shape. Thus, we need to change spline shape. Move slider until you can see spline clearly. Select spline. Go to Modify tab. In Modifier Stack, highlight Line row. You may see your scene is ruined. It's okay. It's just temporary. Then, activate Vertex selection. Select all vertices in spline (3 vertices). In viewport, right click those vertices and choose Corner in quad menu. Spline is like a straight line now. De-activate vertex selection.

10. Highlight Spline IK Control row to activate inverse kinematic again. Render your animation. Congrats, you have finished this tutorial..

Tips

You can skip step #8 to #10 by following this tip

Directly go to Modifier stack with the IKSpline selected, select line segment of the piston (topmost segment), right click and change from curve to line. This way you only had to move the middle control point (Point02) lower than the piston's lowest position, and it worked. No need to key the control point (Point 02) again, only the rotation is enough.

Thanks to Johannis for sharing this useful tips.