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core: Don't divide by zero in BitmapData::perlinNoise() if baseX or baseY is 0.0

This commit is contained in:
TÖRÖK Attila 2023-07-30 21:17:56 +02:00 committed by Nathan Adams
parent d6806c6c24
commit a023ca605d
1 changed files with 8 additions and 3 deletions
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11
core/src/bitmap/operations.rs
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@ -261,6 +261,11 @@ pub fn perlin_noise<'gc>(
let turb = Turbulence::from_seed(random_seed);
let base_freq = (
if base.0 == 0.0 { 0.0 } else { 1.0 / base.0 },
if base.1 == 0.0 { 0.0 } else { 1.0 / base.1 },
);
for y in 0..write.height() {
for x in 0..write.width() {
let px = x as f64;
@ -273,7 +278,7 @@ pub fn perlin_noise<'gc>(
noise[0] = turb.turbulence(
0,
(px, py),
(1.0 / base.0, 1.0 / base.1),
base_freq,
num_octaves,
fractal_noise,
stitch,
@ -289,7 +294,7 @@ pub fn perlin_noise<'gc>(
turb.turbulence(
1,
(px, py),
(1.0 / base.0, 1.0 / base.1),
base_freq,
num_octaves,
fractal_noise,
stitch,
@ -318,7 +323,7 @@ pub fn perlin_noise<'gc>(
*noise_c = turb.turbulence(
channel,
(px, py),
(1.0 / base.0, 1.0 / base.1),
base_freq,
num_octaves,
fractal_noise,
stitch,