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highlight particles in 3D grid with a sphere

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frankie
zafe
This sketch is a study on how to reduce the scope when searching the grid's cells touched by a sphere. It's particuarly useful when working with particles or a huge number of moving elements. - First click for XY sphere center. - Second click for sphere radius - Second click for Z sphere center. - press 'h' to show/hide the grid - press 'arrow up' to increase the grid definition - press 'arrow down' to decrease the grid definition
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