// Get the intersection box formed by two overlapped Cubes
public static I3dObject CubeIntersec(Cube cube1, Cube cube2)
{
// Look and fit for Max and Min cube by it's volume
Cube maxCube = (cube1.Volume() > cube2.Volume()) ? cube1 : cube2;
Cube minCube = (cube1.Volume() <= cube2.Volume()) ? cube1 : cube2;
// Look for any intersection vertex, min cube based
bool cubesIntersect = false;
for (short i = 0; i <= 7; i++)
{
if (IsInside(maxCube, minCube.Vertex(i)))
{
cubesIntersect = true;
}
}
// If cubes don't intersect, returns null
if (cubesIntersect == false)
{
return(null);
}
// Look for intersection volume
return(new Box(
(minCube.MinDimension(Dimension.Axis.x) < maxCube.MinDimension(Dimension.Axis.x)) ? maxCube.MinDimension(Dimension.Axis.x) : minCube.MinDimension(Dimension.Axis.x),
(minCube.MaxDimension(Dimension.Axis.x) > maxCube.MaxDimension(Dimension.Axis.x)) ? maxCube.MaxDimension(Dimension.Axis.x) : minCube.MaxDimension(Dimension.Axis.x),
(minCube.MinDimension(Dimension.Axis.y) < maxCube.MinDimension(Dimension.Axis.y)) ? maxCube.MinDimension(Dimension.Axis.y) : minCube.MinDimension(Dimension.Axis.y),
(minCube.MaxDimension(Dimension.Axis.y) > maxCube.MaxDimension(Dimension.Axis.y)) ? maxCube.MaxDimension(Dimension.Axis.y) : minCube.MaxDimension(Dimension.Axis.y),
(minCube.MinDimension(Dimension.Axis.z) < maxCube.MinDimension(Dimension.Axis.z)) ? maxCube.MinDimension(Dimension.Axis.z) : minCube.MinDimension(Dimension.Axis.z),
(minCube.MaxDimension(Dimension.Axis.z) > maxCube.MaxDimension(Dimension.Axis.z)) ? maxCube.MaxDimension(Dimension.Axis.z) : minCube.MaxDimension(Dimension.Axis.z)
));
}
public void I3dObject_Volume_NonNegative()
{
bool failed = false;
for (int i = 0; i < 100; i++)
{
var object1 = new Cubes.Cube(new Point(new Random().NextDouble(), new Random().NextDouble(), new Random().NextDouble()), new Random().NextDouble());
if (object1.Volume() < 0)
{
failed = true; break;
}
}
Assert.IsFalse(failed);
}
static void Main(string[] args)
{
// Create two cubes
Cube cube1 = new Cube(new Point(1, 1, 1), 4);
Cube cube2 = new Cube(new Point(1, 1, 2), 3);
// Print some info
Console.WriteLine("First cube's side is {0}, centered at ({1},{2},{3}) and it's Volume is: {4}", cube1.Side, cube1.Center.X, cube1.Center.Y, cube1.Center.Z, cube1.Volume().ToString());
Console.WriteLine("Second cube's side is {0}, centered at ({1},{2},{3}) and it's Volume is: {4}", cube2.Side, cube2.Center.X, cube2.Center.Y, cube2.Center.Z, cube2.Volume().ToString());
// Calculate intersection box
I3dObject intersect = Operators.CubeIntersec(cube1, cube2);
// Print result
Console.WriteLine("Intersection Volume is: {0}", (intersect == null) ? "0" : intersect.Volume().ToString());
}
