Barend Gehrels said: (by the date of Fri, 23 Apr 2010 09:19:51 +0200)
No. The 3D is implemented in the design but there is hardly any implementation. 3D points and boxes can be defined. 3D distances can be calculated. There is some more but the operations you ask for are not yet implemented.
The sphere is moved to an extension. The other geometries you mention are not (yet) there. We concentrate on finishing the part for first inclusion into Boost first.
I see. I asked to get the picture about current state of matters. Now that it is as you tell me, I think that the best thing for me, is to focus on 3d vectors and quaternions. I'll be implementing the 3D shapes on my own, as I need them. (I have plenty of old code with such things, lying around, but never enough time to clean it up).
Also I wanted to ask about 3D points regarded as vectors. Can I add and subtract them? What about 3D vector cross product. What about dot product? I guess that I need to write that 'very old formula' function myself?
This is possible: seeing 3D points as vectors, adding and subtracting indeed. Dot product in any dimension; cross product in 2 and 3 dimensions.
this would be great. From Emil's answer I hope that this in fact already is going to work. See my other reply that I've just sent.
So these things should be possible, however the calculation of the rotation about an arbitrary axis was in draft and not yet in the SVN. If wished I can add this once. On the other hand a link with boost::quaternion sounds also as an attractive alternative.
I believe that using boost::quaternion is the best way to go. Maybe Emil's extensions to it are just enough? -- Janek Kozicki http://janek.kozicki.pl/ |