This directory contains the source code for the 2D projection ->
3D wireframe model.

How to compile the code:

On the CCPC or other systems having OpenGL installed and the librarty
paths set, you will have to type "make linux" which will compile
ODraw.c and include the file
	wire1.c - this has the source code for the Wireframe generation
	ODraw.c - the OpenGL based graphics interface.

How to Run the code

ODraw < INPUT-FILENAME

This is an example of an input file (input_fig2):

12		Number of vertices in front view

73 5		Followed by their coords
55 5
61 11
17 11
23 5
5 5
5 20
9.44 32
15 47
63 47
69.12 32
73 20

24		Top view - num of verts and coords
73 73
61 73
55 73
23 73
17 73
5 73
5 5
17 5
23 5
55 5
61 5
73 5
69.12 48
9.44 48
9.44 30
69.12 30
63 63
15 63
15 15
63 15
63 48
15 48
15 30
63 30

12			Side view

5 5
73 5
73 11
73 20
63 47
48 47
48 32
30 32
30 47
15 47
5 20
5 11

46		Number of edges and Vertex Pairs in top view
1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 1 
13 14 14 15 15 16 16 13 2 11 3 10 4 9 5 8
17 18 18 19 19 20 20 17
21 13 21 17 22 14 22 18 23 15 23 19 24 16 24 20 21 22 23 24
1 6 7 12 1 3 4 6 7 9 10 12 2 5 8 11 1 17 6 18 7 19 12 20

16		Num of edges and Vertex Pairs - side view
1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 1 
12 3 11 4 11 1 2 4 

16		Same - FRONT VIEW	; this comes last
1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 1
12 7 11 8 7 9 10 12

CONVENTIONS:

In giving the input, vertices are numbered 1 to N.
 

OUTPUT:

There will be a 3D display of the re-constructed solid in the graphics
window.  At this point the 3D edges are not written to a file buyt
they are available in the variable p_edge.