public void ComputeCorners_Frustum()
{
var hull = new Hull3d(new[]
{
new Plane3d(new V3d(0, 0, -1), V3d.OOO),
new Plane3d(new V3d(0, 0, +1), new V3d(0, 0, 0.25)),
new Plane3d(new V3d(-1, 0, +1).Normalized, V3d.OOO),
new Plane3d(new V3d(+1, 0, +1).Normalized, V3d.IOO),
new Plane3d(new V3d(0, -1, +1).Normalized, V3d.OOO),
new Plane3d(new V3d(0, +1, +1).Normalized, V3d.OIO),
});
var expectedCorners = new []
{
V3d.OOO, V3d.IOO, V3d.IIO, V3d.OIO,
new V3d(0.25, 0.25, 0.25),
new V3d(0.75, 0.25, 0.25),
new V3d(0.75, 0.75, 0.25),
new V3d(0.25, 0.75, 0.25),
};
var corners = hull.ComputeCorners();
Assert.IsTrue(corners.SetEquals(expectedCorners));
}
public static Box3d IntersectionBounds(this Hull3d hull, Box3d box)
{
if (box.IsInvalid)
{
return(box);
}
var bh = Hull3d.Create(box);
var pp = new Plane3d[6 + hull.PlaneCount];
bh.PlaneArray.CopyTo(pp, 0);
hull.PlaneArray.CopyTo(pp, 6);
var h = new Hull3d(pp);
return(new Box3d(h.ComputeCorners()));
}
public void ComputeCorners_Cube()
{
var hull = new Hull3d(new[]
{
new Plane3d(-V3d.XAxis, V3d.Zero),
new Plane3d(-V3d.YAxis, V3d.Zero),
new Plane3d(-V3d.ZAxis, V3d.Zero),
new Plane3d(V3d.XAxis, V3d.One),
new Plane3d(V3d.YAxis, V3d.One),
new Plane3d(V3d.ZAxis, V3d.One)
});
var corners = hull.ComputeCorners();
var expectedCorners = new [] { V3d.OOO, V3d.OOI, V3d.OIO, V3d.OII, V3d.IOO, V3d.IOI, V3d.IIO, V3d.III };
Assert.IsTrue(corners.SetEquals(expectedCorners));
}