public static bool Intersects(Sprite spriteA, Sprite spriteB)
{
if(spriteA.PrepareRendererPackage().destination.Intersects(spriteB.PrepareRendererPackage().destination))
{
return IntersectsPixels(spriteA, spriteB);
}
return false;
}
public static bool IntersectsPixels(Sprite spriteA, Sprite spriteB)
{
Rectangle destinationA = spriteA.PrepareRendererPackage().destination;
Rectangle destinationB = spriteB.PrepareRendererPackage().destination;
// Find the bounds of the rectangle intersection
int top = Math.Max(destinationA.Top, destinationB.Top);
int bottom = Math.Min(destinationA.Bottom, destinationB.Bottom);
int left = Math.Max(destinationA.Left, destinationB.Left);
int right = Math.Min(destinationA.Right, destinationB.Right);
Color[] dataA = spriteA.GetColorData();
Color[] dataB = spriteB.GetColorData();
// Check every point within the intersection bounds
for (int y = top; y < bottom; y++)
{
for (int x = left; x < right; x++)
{
// Get the color of both pixels at this point
Color colorA = dataA[(x - destinationA.Left) +
(y - destinationA.Top) * destinationA.Width];
Color colorB = dataB[(x - destinationB.Left) +
(y - destinationB.Top) * destinationB.Width];
// If both pixels are not completely transparent,
if (colorA.A > 0 && colorB.A != 0)
{
// then an intersection has been found
return true;
}
}
}
// No intersection found
return false;
}
