public static void test_AxisAlignedBox3()
{
Random r = new Random(31337);
for (int iter = 0; iter < 10000; ++iter)
{
Vector3d[] pts = TestUtil.RandomPoints3(100, r, Vector3d.Zero, 100);
for (int j = 0; j < pts.Length; j += 2)
{
AxisAlignedBox3d box1 = new AxisAlignedBox3d(pts[j], 10.0);
AxisAlignedBox3d box2 = new AxisAlignedBox3d(pts[j + 1], 20);
double dist_sqr = box1.DistanceSquared(ref box2);
if (box1.Intersects(box2))
{
Util.gDevAssert(dist_sqr == 0);
}
else
{
Util.gDevAssert(dist_sqr > 0);
}
dist_sqr -= MathUtil.ZeroTolerance; // numericals
for (int k = 0; k < 8; ++k)
{
Vector3d p0 = box1.Corner(k);
Util.gDevAssert(dist_sqr < p0.DistanceSquared(box2.Center));
for (int i = 0; i < 8; ++i)
{
Util.gDevAssert(dist_sqr <= p0.DistanceSquared(box2.Corner(i)));
}
}
}
}
}
public static void CalculateUVs(this DMesh3 dMesh)
{
dMesh.EnableVertexUVs(Vector2f.Zero);
OrthogonalPlaneFit3 orth = new OrthogonalPlaneFit3(dMesh.Vertices());
Frame3f frame = new Frame3f(orth.Origin, orth.Normal);
AxisAlignedBox3d bounds = dMesh.CachedBounds;
AxisAlignedBox2d boundsInFrame = new AxisAlignedBox2d();
for (int i = 0; i < 8; i++)
{
boundsInFrame.Contain(frame.ToPlaneUV((Vector3f)bounds.Corner(i), 3));
}
Vector2f min = (Vector2f)boundsInFrame.Min;
float width = (float)boundsInFrame.Width;
float height = (float)boundsInFrame.Height;
for (int i = 0; i < dMesh.VertexCount; i++)
{
Vector2f UV = frame.ToPlaneUV((Vector3f)dMesh.GetVertex(i), 3);
UV.x = (UV.x - min.x) / width;
UV.y = (UV.y - min.y) / height;
dMesh.SetVertexUV(i, UV);
}
}
