graphics/paysages3d
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Merge branch 'master' into vegetation

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Conflicts:
	src/definition/Scenery.cpp
	src/interface/commandline/tests.cpp
This commit is contained in:
Michaël Lemaire 2015-12-10 19:48:42 +01:00
commit c5950f810f
30 changed files with 146 additions and 91 deletions
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4
src/basics/NoiseGenerator.cpp
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@ -135,8 +135,8 @@ void NoiseGenerator::setState(const NoiseState &state) {
state.copy(&this->state);
}
void NoiseGenerator::randomizeOffsets() {
state.randomizeOffsets();
void NoiseGenerator::randomizeOffsets(RandomGenerator &random) {
state.randomizeOffsets(random);
}
NoiseGenerator::NoiseFunction NoiseGenerator::getFunction() {

2
src/basics/NoiseGenerator.h
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@ -39,7 +39,7 @@ class BASICSSHARED_EXPORT NoiseGenerator {
}
void setState(const NoiseState &state);
void randomizeOffsets();
void randomizeOffsets(RandomGenerator &random = RandomGeneratorDefault);
NoiseFunction getFunction();
void setCustomFunction(double (*func1d)(double x), double (*func2d)(double x, double y),
double (*func3d)(double x, double y, double z));

8
src/basics/NoiseState.cpp
View file

@ -42,11 +42,11 @@ void NoiseState::copy(NoiseState *destination) const {
destination->level_offsets = level_offsets;
}
void NoiseState::randomizeOffsets() {
void NoiseState::randomizeOffsets(RandomGenerator &random) {
for (auto &level_offset : level_offsets) {
level_offset.x = RandomGenerator::random();
level_offset.y = RandomGenerator::random();
level_offset.z = RandomGenerator::random();
level_offset.x = random.genDouble();
level_offset.y = random.genDouble();
level_offset.z = random.genDouble();
}
}

2
src/basics/NoiseState.h
View file

@ -28,7 +28,7 @@ class BASICSSHARED_EXPORT NoiseState {
void load(PackStream *stream);
void copy(NoiseState *destination) const;
void randomizeOffsets();
void randomizeOffsets(RandomGenerator &random = RandomGeneratorDefault);
void resetOffsets(double x = 0.0, double y = 0.0, double z = 0.0);
void setLevel(int level, double x, double y, double z);

7
src/basics/Vector3.cpp
View file

@ -19,7 +19,6 @@ Vector3::Vector3(const VectorSpherical &v)
Vector3::Vector3(double x, double y, double z) : x(x), y(y), z(z) {
}
void Vector3::save(PackStream *stream) const {
stream->write(&x);
stream->write(&y);
@ -115,10 +114,10 @@ Vector3 Vector3::midPointTo(const Vector3 &other) const {
return Vector3((other.x + x) * 0.5, (other.y + y) * 0.5, (other.z + z) * 0.5);
}
Vector3 Vector3::randomInSphere(double radius, bool only_surface) {
Vector3 Vector3::randomInSphere(double radius, bool only_surface, RandomGenerator &random) {
// TODO More uniform spatial repartition
// The current randomization clusters result near the center and at the poles
VectorSpherical vec = {only_surface ? radius : RandomGenerator::random() * radius,
(RandomGenerator::random() - 0.5) * M_PI, RandomGenerator::random() * M_2PI};
VectorSpherical vec = {only_surface ? radius : random.genDouble() * radius,
(random.genDouble() - 0.5) * M_PI, random.genDouble() * M_2PI};
return Vector3(vec);
}

2
src/basics/Vector3.h
View file

@ -71,7 +71,7 @@ class BASICSSHARED_EXPORT Vector3 {
*
* If *only_surface* is true, produce a vector with *radius* as length.
*/
static Vector3 randomInSphere(double radius = 1.0, bool only_surface = false);
static Vector3 randomInSphere(double radius = 1.0, bool only_surface = false, RandomGenerator &random = RandomGeneratorDefault);
public:
// TODO Make private

18
src/definition/AtmosphereDefinition.cpp
View file

@ -100,7 +100,7 @@ void AtmosphereDefinition::getHMS(int *hour, int *minute, int *second) const {
*second = value - *minute * 60.0;
}
void AtmosphereDefinition::applyPreset(AtmospherePreset preset) {
void AtmosphereDefinition::applyPreset(AtmospherePreset preset, RandomGenerator &random) {
sun_color.r = 1.0;
sun_color.g = 0.95;
sun_color.b = 0.9;
@ -142,28 +142,28 @@ void AtmosphereDefinition::applyPreset(AtmospherePreset preset) {
;
}
generateStars(2000);
generateStars(2000, random);
validate();
}
void AtmosphereDefinition::generateStars(int count) {
void AtmosphereDefinition::generateStars(int count, RandomGenerator &random) {
stars.clear();
for (int i = 0; i < count; ++i) {
Star star;
star.location =
Vector3((RandomGenerator::random() - 0.5) * 100000.0, (RandomGenerator::random() * 0.5) * 100000.0,
(RandomGenerator::random() - 0.5) * 100000.0);
Vector3((random.genDouble() - 0.5) * 100000.0, (random.genDouble() * 0.5) * 100000.0,
(random.genDouble() - 0.5) * 100000.0);
if (star.location.getNorm() < 30000.0) {
i--;
continue;
}
double brillance = RandomGenerator::random() * 0.05 + 0.1;
star.col = Color(brillance + RandomGenerator::random() * 0.03, brillance + RandomGenerator::random() * 0.03,
brillance + RandomGenerator::random() * 0.03, 1.0);
star.radius = 30.0 + RandomGenerator::random() * 20.0;
double brillance = random.genDouble() * 0.05 + 0.1;
star.col = Color(brillance + random.genDouble() * 0.03, brillance + random.genDouble() * 0.03,
brillance + random.genDouble() * 0.03, 1.0);
star.radius = 30.0 + random.genDouble() * 20.0;
stars.push_back(star);
}

4
src/definition/AtmosphereDefinition.h
View file

@ -64,8 +64,8 @@ class DEFINITIONSHARED_EXPORT AtmosphereDefinition : public DefinitionNode {
*/
void getHMS(int *hour, int *minute, int *second) const;
void applyPreset(AtmospherePreset preset);
void generateStars(int count);
void applyPreset(AtmospherePreset preset, RandomGenerator &random = RandomGeneratorDefault);
void generateStars(int count, RandomGenerator &random = RandomGeneratorDefault);
public:
AtmosphereModel model;

3
src/definition/CloudsDefinition.cpp
View file

@ -9,12 +9,13 @@ static DefinitionNode *_layerConstructor(Layers *parent, const std::string &name
CloudsDefinition::CloudsDefinition(DefinitionNode *parent) : Layers(parent, "clouds", _layerConstructor) {
}
void CloudsDefinition::applyPreset(CloudsPreset preset) {
void CloudsDefinition::applyPreset(CloudsPreset preset, RandomGenerator &random) {
clear();
if (preset == CLOUDS_PRESET_PARTLY_CLOUDY) {
CloudLayerDefinition layer(NULL, "Strato-cumulus");
layer.type = CloudLayerDefinition::STRATOCUMULUS;
layer.noise_state.randomizeOffsets(random);
addLayer(layer);
}
}

2
src/definition/CloudsDefinition.h
View file

@ -17,7 +17,7 @@ class DEFINITIONSHARED_EXPORT CloudsDefinition : public Layers {
}
typedef enum { CLOUDS_PRESET_PARTLY_CLOUDY } CloudsPreset;
void applyPreset(CloudsPreset preset);
void applyPreset(CloudsPreset preset, RandomGenerator &random = RandomGeneratorDefault);
};
}
}

29
src/definition/Scenery.cpp
View file

@ -1,6 +1,5 @@
#include "Scenery.h"
#include <ctime>
#include <map>
#include "PackStream.h"
@ -12,6 +11,7 @@
#include "VegetationDefinition.h"
#include "WaterDefinition.h"
#include "Logs.h"
#include "RandomGenerator.h"
static const double APP_HEADER = 19866544632.125;
static const int DATA_VERSION = 1;
@ -95,25 +95,26 @@ const Scenery *Scenery::getScenery() const {
return this;
}
void Scenery::autoPreset(int seed) {
if (!seed) {
seed = time(NULL);
}
srand(seed);
terrain->applyPreset(TerrainDefinition::TERRAIN_PRESET_STANDARD);
textures->applyPreset(TexturesDefinition::TEXTURES_PRESET_FULL);
atmosphere->applyPreset(AtmosphereDefinition::ATMOSPHERE_PRESET_CLEAR_DAY);
water->applyPreset(WaterDefinition::WATER_PRESET_LAKE);
clouds->applyPreset(CloudsDefinition::CLOUDS_PRESET_PARTLY_CLOUDY);
vegetation->applyPreset(VegetationDefinition::VEGETATION_PRESET_TEMPERATE);
void Scenery::autoPreset(RandomGenerator &random) {
terrain->applyPreset(TerrainDefinition::TERRAIN_PRESET_STANDARD, random);
textures->applyPreset(TexturesDefinition::TEXTURES_PRESET_FULL, random);
atmosphere->applyPreset(AtmosphereDefinition::ATMOSPHERE_PRESET_CLEAR_DAY, random);
water->applyPreset(WaterDefinition::WATER_PRESET_LAKE, random);
clouds->applyPreset(CloudsDefinition::CLOUDS_PRESET_PARTLY_CLOUDY, random);
vegetation->applyPreset(VegetationDefinition::VEGETATION_PRESET_TEMPERATE, random);
camera->setLocation(VECTOR_ZERO);
camera->setTarget(VECTOR_NORTH);
validate();
Logs::debug() << "[Definition] New scenery generated from seed " << seed << std::endl;
Logs::debug() << "[Definition] New scenery generated from seed " << random.getSeed() << std::endl;
}
void Scenery::autoPreset(unsigned int seed)
{
RandomGenerator random(seed);
autoPreset(random);
}
void Scenery::setAtmosphere(AtmosphereDefinition *atmosphere) {

3
src/definition/Scenery.h
View file

@ -34,7 +34,8 @@ class DEFINITIONSHARED_EXPORT Scenery : public DefinitionNode {
virtual const Scenery *getScenery() const override;
void autoPreset(int seed = 0);
void autoPreset(RandomGenerator &random = RandomGeneratorDefault);
void autoPreset(unsigned int seed);
void setAtmosphere(AtmosphereDefinition *atmosphere);
inline AtmosphereDefinition *getAtmosphere() const {

4
src/definition/TerrainDefinition.cpp
View file

@ -113,11 +113,11 @@ unsigned long TerrainDefinition::getMemoryStats() {
return height_map->getMemoryStats();
}
void TerrainDefinition::applyPreset(TerrainPreset preset) {
void TerrainDefinition::applyPreset(TerrainPreset preset, RandomGenerator &random) {
int resolution = 8;
switch (preset) {
case TERRAIN_PRESET_STANDARD:
_height_noise->randomizeOffsets();
_height_noise->randomizeOffsets(random);
_height_noise->clearLevels();
_height_noise->addLevelSimple(pow(2.0, resolution + 1), -1.0, 1.0);
_height_noise->addLevelsSimple(resolution - 2, pow(2.0, resolution - 1), -0.7, 0.7, 0.5);

2
src/definition/TerrainDefinition.h
View file

@ -37,7 +37,7 @@ class DEFINITIONSHARED_EXPORT TerrainDefinition : public DefinitionNode {
public:
typedef enum { TERRAIN_PRESET_STANDARD } TerrainPreset;
void applyPreset(TerrainPreset preset);
void applyPreset(TerrainPreset preset, RandomGenerator &random = RandomGeneratorDefault);
public:
double height;

6
src/definition/TextureLayerDefinition.cpp
View file

@ -96,9 +96,9 @@ void TextureLayerDefinition::load(PackStream *stream) {
_detail_noise->load(stream);
}
void TextureLayerDefinition::applyPreset(TextureLayerPreset preset) {
_displacement_noise->randomizeOffsets();
_detail_noise->randomizeOffsets();
void TextureLayerDefinition::applyPreset(TextureLayerPreset preset, RandomGenerator &random) {
_displacement_noise->randomizeOffsets(random);
_detail_noise->randomizeOffsets(random);
terrain_zone->clear();

2
src/definition/TextureLayerDefinition.h
View file

@ -29,7 +29,7 @@ class DEFINITIONSHARED_EXPORT TextureLayerDefinition : public DefinitionNode {
virtual void copy(DefinitionNode *destination) const override;
virtual void validate() override;
void applyPreset(TextureLayerPreset preset);
void applyPreset(TextureLayerPreset preset, RandomGenerator &random = RandomGeneratorDefault);
public:
Zone *terrain_zone;

20
src/definition/TexturesDefinition.cpp
View file

@ -9,44 +9,44 @@ static DefinitionNode *_layer_constructor(Layers *parent, const std::string &nam
TexturesDefinition::TexturesDefinition(DefinitionNode *parent) : Layers(parent, "textures", _layer_constructor) {
}
void TexturesDefinition::applyPreset(TexturesPreset preset) {
void TexturesDefinition::applyPreset(TexturesPreset preset, RandomGenerator &random) {
TextureLayerDefinition layer(NULL, "temp");
clear();
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_MUD);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_MUD, random);
layer.setName("Mud");
addLayer(layer);
if (preset == TEXTURES_PRESET_FULL) {
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK, random);
layer.setName("Ground");
addLayer(layer);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_GRASS);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_GRASS, random);
layer.setName("Grass");
addLayer(layer);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SAND);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SAND, random);
layer.setName("Sand");
addLayer(layer);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SNOW);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SNOW, random);
layer.setName("Snow");
addLayer(layer);
} else if (preset == TEXTURES_PRESET_IRELAND) {
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK, random);
layer.setName("Ground");
addLayer(layer);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_GRASS);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_GRASS, random);
layer.setName("Grass");
addLayer(layer);
} else if (preset == TEXTURES_PRESET_ALPS) {
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_ROCK, random);
layer.setName("Ground");
addLayer(layer);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SNOW);
layer.applyPreset(TextureLayerDefinition::TEXTURES_LAYER_PRESET_SNOW, random);
layer.setName("Snow");
addLayer(layer);
} else if (preset == TEXTURES_PRESET_CANYON) {

2
src/definition/TexturesDefinition.h
View file

@ -22,7 +22,7 @@ class DEFINITIONSHARED_EXPORT TexturesDefinition : public Layers {
TEXTURES_PRESET_ALPS,
TEXTURES_PRESET_CANYON
} TexturesPreset;
void applyPreset(TexturesPreset preset);
void applyPreset(TexturesPreset preset, RandomGenerator &random = RandomGeneratorDefault);
double getMaximalDisplacement();
};

4
src/definition/VegetationDefinition.cpp
View file

@ -24,13 +24,13 @@ double VegetationDefinition::getMaxHeight() const {
return max_height;
}
void VegetationDefinition::applyPreset(VegetationPreset preset) {
void VegetationDefinition::applyPreset(VegetationPreset preset, RandomGenerator &random) {
VegetationLayerDefinition layer(this, "temp");
clear();
if (preset == VEGETATION_PRESET_TEMPERATE) {
layer.applyPreset(VegetationLayerDefinition::VEGETATION_BASIC_TREES);
layer.applyPreset(VegetationLayerDefinition::VEGETATION_BASIC_TREES, random);
layer.setName("Basic tree");
addLayer(layer);
}

2
src/definition/VegetationDefinition.h
View file

@ -28,7 +28,7 @@ class DEFINITIONSHARED_EXPORT VegetationDefinition : public Layers {
double getMaxHeight() const;
typedef enum { VEGETATION_PRESET_TEMPERATE } VegetationPreset;
void applyPreset(VegetationPreset preset);
void applyPreset(VegetationPreset preset, RandomGenerator &random = RandomGeneratorDefault);
};
}
}

4
src/definition/VegetationLayerDefinition.cpp
View file

@ -13,6 +13,6 @@ double VegetationLayerDefinition::getMaxHeight() const {
return presence->getMaxHeight();
}
void VegetationLayerDefinition::applyPreset(VegetationLayerPreset) {
model->randomize();
void VegetationLayerDefinition::applyPreset(VegetationLayerPreset, RandomGenerator &random) {
model->randomize(random);
}

2
src/definition/VegetationLayerDefinition.h
View file

@ -25,7 +25,7 @@ class DEFINITIONSHARED_EXPORT VegetationLayerDefinition : public DefinitionNode
double getMaxHeight() const;
typedef enum { VEGETATION_BASIC_TREES } VegetationLayerPreset;
void applyPreset(VegetationLayerPreset preset);
void applyPreset(VegetationLayerPreset preset, RandomGenerator &random = RandomGeneratorDefault);
private:
/**

30
src/definition/VegetationModelDefinition.cpp
View file

@ -101,41 +101,41 @@ void VegetationModelDefinition::copy(DefinitionNode *destination_) const {
void VegetationModelDefinition::validate() {
}
static inline double randomizeValue(double base, double min_factor, double max_factor) {
return base * (min_factor + RandomGenerator::random() * (max_factor - min_factor));
static inline double randomizeValue(RandomGenerator &random, double base, double min_factor, double max_factor) {
return base * (min_factor + random.genDouble() * (max_factor - min_factor));
}
static void addBranchRecurse(std::vector<CappedCylinder> &branches, const Vector3 &base, const Vector3 &direction,
double radius, double length) {
static void addBranchRecurse(RandomGenerator &random, std::vector<CappedCylinder> &branches, const Vector3 &base,
const Vector3 &direction, double radius, double length) {
branches.push_back(CappedCylinder(base, direction, radius, length));
if (length > 0.1) {
int split_count = 3;
Matrix4 pivot1 = Matrix4::newRotateAxis(randomizeValue(1.0 - 0.6 * length, 0.9, 1.1), VECTOR_EAST);
Matrix4 pivot1 = Matrix4::newRotateAxis(randomizeValue(random, 1.0 - 0.6 * length, 0.9, 1.1), VECTOR_EAST);
Vector3 new_direction = pivot1.multPoint(direction);
for (int i = 0; i < split_count; i++) {
Matrix4 pivot2 =
Matrix4::newRotateAxis(randomizeValue(M_PI * 2.0 / (double)split_count, 0.9, 1.1), direction);
Matrix4::newRotateAxis(randomizeValue(random, M_PI * 2.0 / (double)split_count, 0.9, 1.1), direction);
new_direction = pivot2.multPoint(new_direction);
Vector3 new_base = base.add(direction.scale(randomizeValue(length, 0.4, 1.0)));
Vector3 new_base = base.add(direction.scale(randomizeValue(random, length, 0.4, 1.0)));
if (new_base.add(new_direction).y > 0.1) {
addBranchRecurse(branches, new_base, new_direction, randomizeValue(radius, 0.45, 0.6),
randomizeValue(length, 0.55, 0.85));
addBranchRecurse(random, branches, new_base, new_direction, randomizeValue(random, radius, 0.45, 0.6),
randomizeValue(random, length, 0.55, 0.85));
}
}
}
}
void VegetationModelDefinition::randomize() {
void VegetationModelDefinition::randomize(RandomGenerator &random) {
// Clear structure
solid_volumes.clear();
foliage_groups.clear();
foliage_items.clear();
// Add trunk and branches
addBranchRecurse(solid_volumes, VECTOR_ZERO, VECTOR_UP, randomizeValue(0.05, 0.6, 1.0),
randomizeValue(0.5, 0.8, 1.0));
addBranchRecurse(random, solid_volumes, VECTOR_ZERO, VECTOR_UP, randomizeValue(random, 0.05, 0.6, 1.0),
randomizeValue(random, 0.5, 0.8, 1.0));
// Add foliage groups
for (const auto &branch : solid_volumes) {
@ -150,9 +150,9 @@ void VegetationModelDefinition::randomize() {
// Add foliage items
for (int i = 0; i < 30; i++) {
double radius = 0.15;
double scale = randomizeValue(radius, 0.5, 1.0);
Vector3 dir = Vector3::randomInSphere(1.0 - radius);
Vector3 normal = dir.add(Vector3::randomInSphere(0.4)).add(Vector3(0.0, 0.3, 0.0)).normalize();
double scale = randomizeValue(random, radius, 0.5, 1.0);
Vector3 dir = Vector3::randomInSphere(1.0 - radius, false, random);
Vector3 normal = dir.add(Vector3::randomInSphere(0.4, false, random)).add(Vector3(0.0, 0.3, 0.0)).normalize();
Disk leaf(dir, normal, scale);
foliage_items.push_back(leaf);
}

2
src/definition/VegetationModelDefinition.h
View file

@ -45,7 +45,7 @@ class DEFINITIONSHARED_EXPORT VegetationModelDefinition : public DefinitionNode
/**
* Randomize the model geometry.
*/
void randomize();
void randomize(RandomGenerator &random = RandomGeneratorDefault);
private:
SurfaceMaterial *solid_material;

2
src/definition/WaterDefinition.cpp
View file

@ -154,7 +154,7 @@ void WaterDefinition::nodeChanged(const DefinitionNode *node, const DefinitionDi
}
}
void WaterDefinition::applyPreset(WaterPreset preset) {
void WaterDefinition::applyPreset(WaterPreset preset, RandomGenerator &random) {
if (preset == WATER_PRESET_LAKE) {
model->setValue(0);
} else if (preset == WATER_PRESET_SEA) {

2
src/definition/WaterDefinition.h
View file

@ -36,7 +36,7 @@ class DEFINITIONSHARED_EXPORT WaterDefinition : public DefinitionNode, public De
virtual void nodeChanged(const DefinitionNode *node, const DefinitionDiff *diff);
typedef enum { WATER_PRESET_LAKE, WATER_PRESET_SEA } WaterPreset;
void applyPreset(WaterPreset preset);
void applyPreset(WaterPreset preset, RandomGenerator &random = RandomGeneratorDefault);
public:
double transparency;

7
src/interface/commandline/tests.cpp
View file

@ -25,6 +25,7 @@
#include "RayCastingResult.h"
#include "OpenGLVegetationImpostor.h"
#include "Texture2D.h"
#include "RandomGenerator.h"
#include <sstream>
#include <iostream>
@ -52,8 +53,8 @@ static void startTestRender(SoftwareCanvasRenderer *renderer, const std::string
static void testGroundShadowQuality() {
Scenery scenery;
srand(5);
scenery.getTerrain()->applyPreset(TerrainDefinition::TERRAIN_PRESET_STANDARD);
RandomGenerator random(5);
scenery.getTerrain()->applyPreset(TerrainDefinition::TERRAIN_PRESET_STANDARD, random);
scenery.getTerrain()->propWaterHeight()->setValue(-0.5);
scenery.getWater()->propReflection()->setValue(0.0);
scenery.getWater()->material->base->r = 0.0;
@ -62,7 +63,7 @@ static void testGroundShadowQuality() {
scenery.getWater()->material->reflection = 0.0;
scenery.getWater()->foam_coverage = 0.0;
scenery.getWater()->transparency = 0.0;
scenery.getAtmosphere()->applyPreset(AtmosphereDefinition::ATMOSPHERE_PRESET_CLEAR_SUNSET);
scenery.getAtmosphere()->applyPreset(AtmosphereDefinition::ATMOSPHERE_PRESET_CLEAR_SUNSET, random);
scenery.getAtmosphere()->setDayTime(16, 45);
scenery.getTextures()->clear();
TextureLayerDefinition texture(NULL, "test");

37
src/system/RandomGenerator.cpp
View file

@ -1 +1,38 @@
#include "RandomGenerator.h"
#include <chrono>
#include <random>
static RandomGenerator _RandomGeneratorDefault;
RandomGenerator& paysages::system::RandomGeneratorDefault = _RandomGeneratorDefault;
class RandomGenerator::RandomGeneratorPrivate {
public:
RandomGeneratorPrivate(unsigned int seed): generator(seed) {
}
std::default_random_engine generator;
std::uniform_real_distribution<double> distribution_double;
};
RandomGenerator::RandomGenerator(RandomGenerator::Seed seed) {
if (not seed) {
std::random_device true_random;
if (true_random.entropy()) {
seed = true_random();
} else {
seed = std::chrono::system_clock::now().time_since_epoch().count();
}
}
data = new RandomGeneratorPrivate(seed);
}
RandomGenerator::~RandomGenerator()
{
delete data;
}
double RandomGenerator::genDouble()
{
return data->distribution_double(data->generator);
}

22
src/system/RandomGenerator.h
View file

@ -3,18 +3,30 @@
#include "system_global.h"
#include <cstdlib>
namespace paysages {
namespace system {
class SYSTEMSHARED_EXPORT RandomGenerator {
public:
RandomGenerator();
typedef unsigned long Seed;
class RandomGeneratorPrivate;
static inline double random() {
return ((double)rand()) / (double)RAND_MAX;
public:
RandomGenerator(Seed seed = 0);
~RandomGenerator();
inline Seed getSeed() const {
return seed;
}
/**
* Generate a 0.0-1.0 random double value.
*/
double genDouble();
private:
Seed seed;
RandomGeneratorPrivate *data;
};
}
}

3
src/system/system_global.h
View file

@ -29,6 +29,9 @@ class Mutex;
class Semaphore;
class PictureWriter;
class Time;
class RandomGenerator;
extern RandomGenerator& RandomGeneratorDefault;
}
}
using namespace paysages::system;