public static Vector2 GetPositionWithinCircle(float circleRadius)
{
float distThing = 1000000000.0f;
float sqrThing = circleRadius * circleRadius;
float xPos;
float yPos;
do
{
xPos = Ross_Utils.GetRandBetween(-circleRadius, circleRadius);
yPos = Ross_Utils.GetRandBetween(-circleRadius, circleRadius);
distThing = Ross_Utils.GetSqrDistance(new Vector2(0, 0), new Vector2(xPos, yPos));
}while(distThing > sqrThing);
return(new Vector2(xPos, yPos));
}
public static int GetNearestThing(Vector2 headPos, Vector2[] positionArray, int numItems)
{
float nearestDistanceSqr = -1.0f;
int nearestItem = -1;
for (int i = 0; i < numItems; i++)
{
float sqrDist = Ross_Utils.GetSqrDistance(headPos, positionArray[i]);
if ((nearestItem == -1) || (sqrDist < nearestDistanceSqr))
{
nearestItem = i;
nearestDistanceSqr = sqrDist;
}
}
return(nearestItem);
}