Preliminary source code for tri-stripper If you have any questions or problems or find any bugs, please send me some mail.
Without further ado, here's the HTML-enhanced README.
The test program should compile in an ANSI environment like this:
cc -O main.c mesh.c -o mesh
You could easily make a library, but since the meshifier is in one
file, that wouldn't help you link any faster.
Directory contents:
mesh.c - Meshifier module code
mesh.h - Meshifier module header
main.c - VERY simple sample application, but it uses
my graphics library which I haven't released.
Look for an OpenGL test program soon.
randlines.c - a simple line randomizer for scrambling input
data (cc randlines.c -o randlines)
data1
data2
data3 - sample data files from one patch of the Utah
teapot.
Poor man's man page:
meshReset() - reset arrays, internal data structures, and whatever
meshAddVertex() - add a new vertex. Finish adding vertices before
adding any triangles.
meshAddTriangle() - add a new triangle. The parameters are indices
into the vertex list for each vertex in the
triangle.
meshSetProcs() - set the functions that will draw your data. The
only really important ones are the begin,
continue, and end strip functions. The others
can be set to NULL if you're not going to enable
outline output or connectivity graphics.
meshCreateStrips() - go and create the strips. Use the procs from
meshSetProcs() to output the finished strips.
meshSetFlag() - set some behavior of the program.
MESH_DRAWSTRIPOUTLINES - draw lines around each strip
MESH_DRAWCONNECTIVITY - draw lines and text indicating the triangle
connectivity that the meshifier finds.
MESH_PRINTSTRIPCONTENTS - print the strip contents as indices into
the triangle list
MESH_PRINTADDTRIANGLES - print each triangle index as it's inserted
into a strip. Only really useful as a
progress indicator.
Future directions:
OpenGL test program (so everyone can test it if they compile Mesa).
Functionality to take an arbitrary triangle list, with float[3]s
for the vertices and generate the vertex and triangle lists.
This would make the code much more useful.
Clean up the cruft.
Let me know if you have any questions or trouble or find any bugs.
This tar file can probably be found at my web page.
Brad Grantham, grantham@plunk.org, http://plunk.org/~grantham/