# SetSpriteShapeCircle

## Description

Overrides the current auto generated shape for use in collision detection, hit testing, and physics. A shape can be set without turning physics on, and by default all sprites are set to use the box shape, which is the fastest to setup. The circle is defined by specifying its center point relative to the sprite's current offset and a radius. For example, if the circle was to be centered on the sprite's offset point it would be specified at position 0,0. Any other value will offset the circle from the sprite. The radius is defined in x coordinates, due to world coordinates not necessarily representing the size of items on screen (e.g. 10 units in X may not be the same apparent size as 10 units in Y).
Setting a shape removes all other shapes assigned to the sprite and replaces it with this one.

## Definition

SetSpriteShapeCircle( iSpriteIndex, x, y, radius )

void agk::SetSpriteShapeCircle( UINT iSpriteIndex, float x, float y, float radius )

## Parameters

- iSpriteIndex - The ID of the sprite to modify.
- x - The x coordinate of the center of the circle in sprite space.
- y - The y coordinate of the center of the circle in sprite space.
- radius - The radius of the circle.