public Box3f(AxisAlignedBox3f aaBox)
{
Extent = 0.5f * aaBox.Diagonal;
Center = aaBox.Min + Extent;
AxisX = Vector3F.AxisX;
AxisY = Vector3F.AxisY;
AxisZ = Vector3F.AxisZ;
}
public static AxisAlignedBox3f Bounds <T>(IEnumerable <T> values, Func <T, Vector3F> PositionF)
{
AxisAlignedBox3f box = AxisAlignedBox3f.Empty;
foreach (T t in values)
{
box.Contain(PositionF(t));
}
return(box);
}
public AxisAlignedBox3f ToAABB()
{
// [TODO] probably more efficient way to do this...at minimum can move center-shift
// to after the containments...
Vector3F extAxis0 = Extent.x * AxisX;
Vector3F extAxis1 = Extent.y * AxisY;
Vector3F extAxis2 = Extent.z * AxisZ;
AxisAlignedBox3f result = new AxisAlignedBox3f(Center - extAxis0 - extAxis1 - extAxis2);
result.Contain(Center + extAxis0 - extAxis1 - extAxis2);
result.Contain(Center + extAxis0 + extAxis1 - extAxis2);
result.Contain(Center - extAxis0 + extAxis1 - extAxis2);
result.Contain(Center - extAxis0 - extAxis1 + extAxis2);
result.Contain(Center + extAxis0 - extAxis1 + extAxis2);
result.Contain(Center + extAxis0 + extAxis1 + extAxis2);
result.Contain(Center - extAxis0 + extAxis1 + extAxis2);
return(result);
}