Short: Spline, Bezier and Hemite SDL examples Author: Tyler Montbriand, AmigaOS 4.0 compile by Spot / Up Rough Uploader: Varthall / Up Rough Type: dev/src Architecture: ppc-amigaos >= 4.0.5 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