I have been given a project in my college of converting 3d object to any 2d view and also reconstructing a 3d object from 2 appropriate 2d views using fltk.

I have 2 questions:
1)I wanted to use the z buffer algo for hidden line elimination.But for that i need all the pixels in the polygon.
Is there any function in FLTK for that??
If not possible what is the best method under fltk for hidden line elimination.....(I am only working on non-curvillinear objects and without cutting planes.)

2)For the 3d reconstruction,what all do i require?
Do i require all the planes of the solid figure before hand only along with all the linesegment projections.
The user is also providing me correpondence between the points of the two planes.

Is that 3d thing possible in fltk i.e I wanted to take the input graphically through event handling.

Please do respond as the project submission date is coming closer......

Thanks

rohan

FLTK offers the OpenGL render context (Fl_Gl_Window) that will do everything for you. See teh 'cube' example. If you are required to write this program "by foot" instead of using this great library, I recommend that you either use a scanline based approach, or sort the polygons back to front before rendering (painters math ;-)


Whoa, this can become a rather complex task. But in general, the user provides two 2d coordinates in a 3d world. If you unproject the camera position and direction, you'll end up with two lines in 3d space. Find the intersection of those two lines, and, tadaa, there's your 3d point.


Absolutely yes. Start by deriving your own class from Fl_GL_Window, then copy the code that renders a cube. Start implementing your own 'handle()' function to get user events. Etc. etc. ...