nerdcruft/libcruft-util
1
0
Fork 0
Code Issues Releases Activity

Make internal functions static within perlin

Browse Source
This commit is contained in:
Danny Robson 2012-05-16 15:03:01 +10:00
parent f7c32ed76e
commit dd3f25decc
1 changed files with 5 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
perlin.cpp
View File

@ -80,7 +80,7 @@ generate (intmax_t x, intmax_t y, size_t seed) {
}
double
static double
smooth2d (intmax_t x, intmax_t y, size_t seed) {
double corners = (generate(x - 1, y - 1, seed) +
generate(x + 1, y - 1, seed) +
@ -96,13 +96,13 @@ smooth2d (intmax_t x, intmax_t y, size_t seed) {
}
double
static double
curve (double t) {
return t * t * (3.0 - 2.0 * t);
}
double
static double
sample2d (double x, double y, size_t seed) {
intmax_t x_int = intmax_t (x);
double x_fac = x - x_int;
@ -122,13 +122,13 @@ sample2d (double x, double y, size_t seed) {
}
double
static double
sigmoid (double x) {
return -1.0 + 2.0 / (1.0 + exp (-2.0 * x));
}
double
static double
perlin2d (double x, double y, size_t seed) {
size_t levels = 16;
double persistence = 0.7;