public static bool BoxVSCircle(Vector2 posA, float radiusSqr, Vector2 min, Vector2 max)
{
float deltaX = posA.x - Maths.Clamp(posA.x, min.x, max.x);
float deltaY = posA.y - Maths.Clamp(posA.y, min.y, max.y);
return((deltaX * deltaX) + (deltaY * deltaY) <= radiusSqr);
}
private void AddToNode(Vector2 posMin, Vector2 posMax)
{
posMin /= CellSize;
posMax /= CellSize;
int maxX = Maths.Clamp((int)posMax.x, 0, girdX - 1);
int maxY = Maths.Clamp((int)posMax.y, 0, girdY - 1);
int minX = Maths.Clamp((int)posMin.x, 0, girdX - 1);
int minY = Maths.Clamp((int)posMin.y, 0, girdY - 1);
int aabbMax = GetIndex1D(maxX, maxY);
int aabbMin = GetIndex1D(minX, minY);
_tempNodes.Add(aabbMin);
if (aabbMin != aabbMax)
{
_tempNodes.Add(aabbMax);
int lenX = maxX - minX + 1;
int lenY = maxY - minY + 1;
for (int x = 0; x < lenX; x++)
{
for (int y = 0; y < lenY; y++)
{
if ((x == 0 && y == 0) || (x == lenX - 1 && y == lenY - 1))
{
continue;
}
_tempNodes.Add(GetIndex1D(x, y) + aabbMin);
}
}
}
}