diff options
Diffstat (limited to 'shadeop.c')
-rw-r--r-- | shadeop.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/shadeop.c b/shadeop.c new file mode 100644 index 0000000..c1484c3 --- /dev/null +++ b/shadeop.c @@ -0,0 +1,26 @@ +#include <u.h> +#include <libc.h> +#include <thread.h> +#include <draw.h> +#include <memdraw.h> +#include <geometry.h> +#include "libobj/obj.h" +#include "graphics.h" +#include "internal.h" + +double +step(double edge, double n) +{ + if(n < edge) + return 0; + return 1; +} + +double +smoothstep(double edge0, double edge1, double n) +{ + double t; + + t = fclamp((n-edge0)/(edge1-edge0), 0, 1); + return t*t * (3 - 2*t); +} |