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# 2. Linear interpolation

Animate a bouncing ball using pose-to-pose animation! First, we draw key poses like the highest point and ground contact, and then we add breakdowns in between to create smooth motion. Computers achieve this effect with linear interpolation, calculating in-between frames by connecting key poses with a straight line in a graph. Then, for more realistic animation, we can adjust keyframes to get the exact spacing we want.

## Want to join the conversation?

• Could you upvote this? I'm trying to get a badge :) thanks
• How long does it take you to make a whole entire movie?
• Movies at Pixar can take anywhere from four to seven years to make.
• what does interpolation mean??
• It means calculating the values in between two known values. For example, if you know a car is 20m along a road at 1pm and 220m along the road 30 seconds later, you can interpolate between those points to find predict how far along the road it is, say, 10 seconds after 1pm.
• Can somebody ask Rob to teach me animation because i am just 9 years old.
🥹
• I don't think that Rob can teach you. He is a Pixar animator and probably has a lot of work to do. You can learn as much as you can from this course and learn more afterwards.
• when you animate the ball, shouldn't you have it pause or slow down at the top and bottom of the animation? you could also have the ball collapse and stretch at the "floor" and the top of the animation to make it more realistic.
• How Mitch money do you get paid for being an animater, I know I probably spelled it wrong
• did you mean "how much money do you get paid for being an animator"?
• How long would it take to animate a short video (5-15 min long)?