What is Animated Physics

This blog is about programming computer animations based on the laws of physics. Gravity is probably one of the easiest and most fun computer animations to work on. Set a bunch of objects in motion and see what happens. Maybe add in a size for the objects and get some crashes, or add some walls and see these things bounce around, or…

The animations use fixed grids and fixed timesteps, similar to frames in a movie. For any number of objects, we display the objects where they are, calculate where they will get to based on their properties and display a new frame. For each object, we assign a name, a location, a mass and the difference in its location from the prior frame (the momentum).

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