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Merge pull request #35761 from Calinou/opensimplexnoise-increase-max-octaves

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Increase the maximum number of octaves in OpenSimplexNoise to 9
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Rémi Verschelde 2020-01-31 10:38:48 +01:00 • committed by GitHub
commit a5d5579105
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3 changed files with 14 additions and 5 deletions
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3
modules/opensimplex/doc_classes/OpenSimplexNoise.xml
View file

@ -117,7 +117,8 @@
Difference in period between [member octaves].
</member>
<member name="octaves" type="int" setter="set_octaves" getter="get_octaves" default="3">
Number of OpenSimplex noise layers that are sampled to get the fractal noise.
Number of OpenSimplex noise layers that are sampled to get the fractal noise. Higher values result in more detailed noise but take more time to generate.
[b]Note:[/b] The maximum allowed value is 9.
</member>
<member name="period" type="float" setter="set_period" getter="get_period" default="64.0">
Period of the base octave. A lower period results in a higher-frequency noise (more value changes across the same distance).

9
modules/opensimplex/open_simplex_noise.cpp
View file

@ -47,7 +47,7 @@ OpenSimplexNoise::~OpenSimplexNoise() {
}
void OpenSimplexNoise::_init_seeds() {
for (int i = 0; i < 6; ++i) {
for (int i = 0; i < MAX_OCTAVES; ++i) {
open_simplex_noise(seed + i * 2, &(contexts[i]));
}
}
@ -71,7 +71,10 @@ int OpenSimplexNoise::get_seed() {
void OpenSimplexNoise::set_octaves(int p_octaves) {
if (p_octaves == octaves) return;
octaves = CLAMP(p_octaves, 1, 6);
ERR_FAIL_COND_MSG(p_octaves > MAX_OCTAVES, vformat("The number of OpenSimplexNoise octaves is limited to %d; ignoring the new value.", MAX_OCTAVES));
octaves = CLAMP(p_octaves, 1, MAX_OCTAVES);
emit_changed();
}
@ -182,7 +185,7 @@ void OpenSimplexNoise::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_noise_3dv", "pos"), &OpenSimplexNoise::get_noise_3dv);
ADD_PROPERTY(PropertyInfo(Variant::INT, "seed"), "set_seed", "get_seed");
ADD_PROPERTY(PropertyInfo(Variant::INT, "octaves", PROPERTY_HINT_RANGE, "1,6,1"), "set_octaves", "get_octaves");
ADD_PROPERTY(PropertyInfo(Variant::INT, "octaves", PROPERTY_HINT_RANGE, vformat("1,%d,1", MAX_OCTAVES)), "set_octaves", "get_octaves");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "period", PROPERTY_HINT_RANGE, "0.1,256.0,0.1"), "set_period", "get_period");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "persistence", PROPERTY_HINT_RANGE, "0.0,1.0,0.001"), "set_persistence", "get_persistence");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "lacunarity", PROPERTY_HINT_RANGE, "0.1,4.0,0.01"), "set_lacunarity", "get_lacunarity");

7
modules/opensimplex/open_simplex_noise.h
View file

@ -37,11 +37,16 @@
#include "thirdparty/misc/open-simplex-noise.h"
// The maximum number of octaves allowed. Note that these are statically allocated.
// Higher values become exponentially slower, so this shouldn't be set too high
// to avoid freezing the editor for long periods of time.
#define MAX_OCTAVES 9
class OpenSimplexNoise : public Resource {
GDCLASS(OpenSimplexNoise, Resource);
OBJ_SAVE_TYPE(OpenSimplexNoise);
osn_context contexts[6];
osn_context contexts[MAX_OCTAVES];
int seed;
float persistence; // Controls details, value in [0,1]. Higher increases grain, lower increases smoothness.