FastLED 3.9.15
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◆ grad() [4/4]

static int32_t grad ( uint8_t hash,
int32_t x,
int32_t y,
int32_t z,
int32_t t )
static

Definition at line 93 of file simplex.cpp.

93 {
94 uint8_t h = hash & 31; // Convert low 5 bits of hash code into 32 simple
95 int32_t u = h < 24 ? x : y; // gradient directions, and compute dot product.
96 int32_t v = h < 16 ? y : z;
97 int32_t w = h < 8 ? z : t;
98 return ((h&1) != 0 ? -u : u) + ((h&2) != 0 ? -v : v) + ((h&4) != 0 ? -w : w);
99}
int y
Definition Audio.ino:72
int x
Definition Audio.ino:71
uint32_t z[NUM_LAYERS]
Definition Fire2023.ino:84
uint16_t hash(int32_t x, int32_t y)

References x, y, and z.