diff options
| author | Campbell Barton <ideasman42@gmail.com> | 2012-07-08 02:51:57 +0400 |
|---|---|---|
| committer | Campbell Barton <ideasman42@gmail.com> | 2012-07-08 02:51:57 +0400 |
| commit | cfb7aee017d95137e19b7b006d9393b5d6a935d4 (patch) | |
| tree | 005a1981af6c5a0f36959d73479cc69137842eb4 /source/blender/blenlib/intern/noise.c | |
| parent | d58ce290e1e4dcb8d0b96259fdf29c854bfaef49 (diff) | |
style cleanup
Diffstat (limited to 'source/blender/blenlib/intern/noise.c')
| -rw-r--r-- | source/blender/blenlib/intern/noise.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/source/blender/blenlib/intern/noise.c b/source/blender/blenlib/intern/noise.c index 2ff0b564592..859bb66073c 100644 --- a/source/blender/blenlib/intern/noise.c +++ b/source/blender/blenlib/intern/noise.c @@ -282,8 +282,8 @@ static float npfade(float t) static float grad(int hash, float x, float y, float z) { - int h = hash & 15; // CONVERT LO 4 BITS OF HASH CODE - float u = h < 8 ? x : y, // INTO 12 GRADIENT DIRECTIONS. + int h = hash & 15; /* CONVERT LO 4 BITS OF HASH CODE */ + float u = h < 8 ? x : y, /* INTO 12 GRADIENT DIRECTIONS. */ v = h < 4 ? y : h == 12 || h == 14 ? x : z; return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v); } @@ -293,21 +293,21 @@ static float newPerlin(float x, float y, float z) { int A, AA, AB, B, BA, BB; float u = floor(x), v = floor(y), w = floor(z); - int X = ((int)u) & 255, Y = ((int)v) & 255, Z = ((int)w) & 255; // FIND UNIT CUBE THAT CONTAINS POINT - x -= u; // FIND RELATIVE X,Y,Z - y -= v; // OF POINT IN CUBE. + int X = ((int)u) & 255, Y = ((int)v) & 255, Z = ((int)w) & 255; /* FIND UNIT CUBE THAT CONTAINS POINT */ + x -= u; /* FIND RELATIVE X,Y,Z */ + y -= v; /* OF POINT IN CUBE. */ z -= w; - u = npfade(x); // COMPUTE FADE CURVES - v = npfade(y); // FOR EACH OF X,Y,Z. + u = npfade(x); /* COMPUTE FADE CURVES */ + v = npfade(y); /* FOR EACH OF X,Y,Z. */ w = npfade(z); - A = hash[X ]+Y; AA = hash[A]+Z; AB = hash[A+1]+Z; // HASH COORDINATES OF - B = hash[X+1]+Y; BA = hash[B]+Z; BB = hash[B+1]+Z; // THE 8 CUBE CORNERS, - return lerp(w, lerp(v, lerp(u, grad(hash[AA ], x, y, z ), // AND ADD - grad(hash[BA ], x - 1, y, z )), // BLENDED - lerp(u, grad(hash[AB ], x, y - 1, z ), // RESULTS - grad(hash[BB ], x - 1, y - 1, z ))), // FROM 8 - lerp(v, lerp(u, grad(hash[AA + 1], x, y, z - 1), // CORNERS - grad(hash[BA + 1], x - 1, y, z - 1)), // OF CUBE + A = hash[X ]+Y; AA = hash[A]+Z; AB = hash[A+1]+Z; /* HASH COORDINATES OF */ + B = hash[X+1]+Y; BA = hash[B]+Z; BB = hash[B+1]+Z; /* THE 8 CUBE CORNERS, */ + return lerp(w, lerp(v, lerp(u, grad(hash[AA ], x, y, z ), /* AND ADD */ + grad(hash[BA ], x - 1, y, z )), /* BLENDED */ + lerp(u, grad(hash[AB ], x, y - 1, z ), /* RESULTS */ + grad(hash[BB ], x - 1, y - 1, z ))), /* FROM 8 */ + lerp(v, lerp(u, grad(hash[AA + 1], x, y, z - 1), /* CORNERS */ + grad(hash[BA + 1], x - 1, y, z - 1)), /* OF CUBE */ lerp(u, grad(hash[AB + 1], x, y - 1, z - 1), grad(hash[BB + 1], x - 1, y - 1, z - 1)))); } |