public static RectI SetBoundingBox(RectI rect, int[] xpoints,
int[] ypoints, int npoints)
{
int boundsMinX = Integer.MAX_VALUE_JAVA;
int boundsMinY = Integer.MAX_VALUE_JAVA;
int boundsMaxX = Integer.MIN_VALUE_JAVA;
int boundsMaxY = Integer.MIN_VALUE_JAVA;
for (int i = 0; i < npoints; i++)
{
int x = xpoints[i];
boundsMinX = MathUtils.Min(boundsMinX, x);
boundsMaxX = MathUtils.Max(boundsMaxX, x);
int y = ypoints[i];
boundsMinY = MathUtils.Min(boundsMinY, y);
boundsMaxY = MathUtils.Max(boundsMaxY, y);
}
return(rect.Set(boundsMinX, boundsMinY, boundsMaxX - boundsMinX,
boundsMaxY - boundsMinY));
}
public static RectI GetIntersection(RectI a, RectI b, RectI result)
{
int a_x = a.x;
int a_r = a.GetRight();
int a_y = a.y;
int a_t = a.GetBottom();
int b_x = b.x;
int b_r = b.GetRight();
int b_y = b.y;
int b_t = b.GetBottom();
int i_x = MathUtils.Max(a_x, b_x);
int i_r = MathUtils.Min(a_r, b_r);
int i_y = MathUtils.Max(a_y, b_y);
int i_t = MathUtils.Min(a_t, b_t);
if (i_x < i_r && i_y < i_t)
{
result.Set(i_x, i_y, i_r - i_x, i_t - i_y);
return(result);
}
return(result);
}
public static void GetDiff(int x1, int y1, int w1, int h1, int x2, int y2, int w2, int h2, RectI result)
{
result.Set(x2 - x1 - w1, y2 - y1 - h1, w1 + w2, h1 + h2);
}