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What is Shadow Casting?

April 26, 2017areas casting computing fov large Los Recursive shadow

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What is Shadow Casting?

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Shadow casting is a way to implement Field of Vision. In shadow casting, a destination square is visible from a source square if there exists an unobstructed line from the center of the source square to any point in the destination square. There are several efficient algorithms to accomplish this, including two which only visits squares that are visible (Spiral Path FOV and FOV using recursive shadowcasting).