The projection of a point q = (x, y, z) onto a plane given by a point p = (a, b, c) and a normal n = (d, e, f) is q_proj = q – dot(q – p, n) * n This calculation assumes that n is a unit vector.
Start with the rightmost point (the point with the biggest x coordinate) Get all edges from this point Follow the edge with the smallest angle to the positive x-axis, and also add it to the solution set From the point reached, follow and add the edge with the smallest angle to the edge you came … Read more
Download Blender View the video tutorials or read this online tutorial Use the osgExport for Blender to get your models into OSG If you want a really cool model, this process will take some time, but you should be able to get a quicky model within a week or so.
First off, both OpenSceneGraph (OSG for short) and Ogre3D are very well documented, supported, large forum etc… I don’t know much about Irrlicht besides it’s the newest of them. You probably won’t go wrong with either of the first two. Someone mentioned CrystalSpace; I haven’t looked at that in years, but it was far behind … Read more
This can be done but it’s worth noting that it will only work on Windows. It used to be hard to do this but Unity recently(4.5.5p1) added -parentHWND command that can be used to embed its program into another program. All you have to do is build your Unity app, then from WPF, start it … Read more
The reason there are so many different options for 3D is because the whole thing is still in a state of flux — 3D in the browser isn’t a finished standard, and of the options you listed, the only one that works in all currently available browsers is Canvas. IE in particular is unlikely to … Read more
I think what your looking for is actually Parallax mapping (Or Parallax Occlusion mapping). Demos: http://www.youtube.com/watch?v=01owTezYC-w http://www.youtube.com/watch?v=gcAsJdo7dME&NR=1 http://www.youtube.com/watch?v=njKdLvmBl88 Parralax mapping basically works by using the height map to alter the texture UV coordinate being used. The main disadvantage to parallax is that anything that appears to be ‘outside’ the polygon will be clipped (think of … Read more
There are many possible camera positions + orientations where the bounding box would fit inside the view frustum. But any procedure would select one specific camera position and orientation. If you would consider bounding spheres, one solution could be to first change orientation to look at bounding sphere center then move back sufficiently (negative look … Read more
http://en.wikipedia.org/wiki/Rotation_matrix. Look under the section Rotation matrix from axis and angle. For your convenience, here’s the matrix you need. It’s a bit hairy. theta is the angle, and ux, uy, and uz are the x, y, and z components of the normalized axis vector If you don’t understand matrices and vectors, post back and I’ll … Read more