curve_test by Tyler Montbriand, 2005
tsm()accesscomm.ca http://burningsmell.org

curve_test is a set of 3 programs to demonstrate 3 different kind of 
third-order parametric curves:  Hemite curve segments, Bezier curve 
segments, and Splines.  Hemite curves are defined by two endpoints and 
two vectors, Bezier curves are defined by four points, and Spline curves 
are defined by 4+n points.  In particular, my program draws *closed* 
spline curves.

All 3 programs are operated the same way;  the 0-9 keys select a 
particular point.  x or shift-x increases or decreases the X coordinate 
of the selected point or vector, y or shift-y increases or decreases the 
Y coordinate of the selected point or vector, ESC quits.  You will see 
the results of the modified curve redrawn in realtime.

It's probably stupidly slow and inefficient both in design and 
implimentation, but I hope the idea at least is fairly clear.

------------------------------------------------------------------------

This makefile was a bit odd, so i compiled the examples by hand using 
the following lines. The link phase went wrong, as the libs ended up
at the wrong place.

gcc hemite.c matrix.o midpoint_line.o -o spline -L/SDK/Local/newlib/lib -lGL
-lGLU -lSDL -lauto -lpthread -lm -lm -lstdc++
gcc spline.c matrix.o midpoint_line.o -o spline -L/SDK/Local/newlib/lib -lGL
-lGLU -lSDL -lauto -lpthread -lm -lm -lstdc++
gcc hemite.c matrix.o midpoint_line.o -o hemite -L/SDK/Local/newlib/lib -lGL
-lGLU -lSDL -lauto -lpthread -lm -lm -lstdc++
gcc bezier.c matrix.o midpoint_line.o -o bezier -L/SDK/Local/newlib/lib -lGL
-lGLU -lSDL -lauto -lpthread -lm -lm -lstdc++
strip bezier 
strip spline 
strip hemite 

.. Spot / Up Rough 2006

 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]               156724  382484  41.0% -lh5- 1c4f Oct 17  2006 CurveTest/Bezier
[generic]                  476     918  51.9% -lh5- f4f5 Apr 25  2005 CurveTest/Docs/README
[generic]               156677  382360  41.0% -lh5- 5a7a Oct 17  2006 CurveTest/Hemite
[generic]                  709    1712  41.4% -lh5- 7f02 Oct 17  2006 CurveTest/ReadMe.aos4
[generic]                  692    1801  38.4% -lh5- 9d8b Apr 20  2005 CurveTest/Source/.hemite.c
[generic]                 1669    5417  30.8% -lh5- 40f1 Apr 21  2005 CurveTest/Source/bezier.c
[generic]                 1474    4534  32.5% -lh5- e5d9 Apr 25  2005 CurveTest/Source/hemite.c
[generic]                  146     298  49.0% -lh5- 65e4 Apr 25  2005 CurveTest/Source/Makefile
[generic]                  943    2452  38.5% -lh5- 03bb Apr 20  2005 CurveTest/Source/matrix.c
[generic]                  426    1132  37.6% -lh5- dfdc Apr 20  2005 CurveTest/Source/matrix.h
[generic]                 1835    4678  39.2% -lh5- 795b Apr 21  2005 CurveTest/Source/midpoint_line.c
[generic]                  273     747  36.5% -lh5- 9129 Apr 21  2005 CurveTest/Source/midpoint_line.h
[generic]                   81     129  62.8% -lh5- e831 Apr 20  2005 CurveTest/Source/parametric.h
[generic]                 1711    5600  30.6% -lh5- edd0 Apr 21  2005 CurveTest/Source/spline.c
[generic]               156769  382684  41.0% -lh5- 0620 Oct 17  2006 CurveTest/Spline
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        15 files  480605 1176946  40.8%            Feb  8 06:08