FastLED
3.9.15
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grad()
[2/4]
static int32_t grad
(
uint8_t
hash
,
int32_t
x
,
int32_t
y
)
static
Definition at line
83
of file
simplex.cpp
.
83
{
84
uint8_t h =
hash
& 7;
// Convert low 3 bits of hash code
85
int32_t u = h < 4 ?
x
:
y
;
// into 8 simple gradient directions,
86
int32_t v = h < 4 ?
y
:
x
;
// and compute the dot product with (x,y).
87
return
((h&1) != 0 ? -u : u) + ((h&2) != 0 ? -2*v : 2*v);
88
}
y
int y
Definition
simple.h:93
x
int x
Definition
simple.h:92
fl::anonymous_namespace{noise_woryley.cpp}::hash
u16 hash(i32 x, i32 y)
Definition
noise_woryley.cpp:18
References
x
, and
y
.
simplex.cpp
Generated on Fri Aug 22 2025 20:59:34 for FastLED by
1.13.2