paysages : Refactoring terrain and textures - WIP.

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@206 b1fd45b6-86a6-48da-8261-f70d1f35bdcc

gui_gtk/tab_terrain.c

@@ -2,8 +2,11 @@
 
 #include "common.h"
 #include "lib_paysages/shared/functions.h"
+#include "lib_paysages/terrain.h"
+#include "lib_paysages/textures.h"
 
 static SmallPreview* _preview;
+static TerrainDefinition _definition;
 
 static Color _cbPreviewRenderPixel(SmallPreview* preview, double x, double y, double xoffset, double yoffset, double scaling)
 {
@@ -12,19 +15,24 @@ static Color _cbPreviewRenderPixel(SmallPreview* preview, double x, double y, do
     result.r = result.g = result.b = terrainGetHeightNormalized(x, y);
     result.a = 1.0;
     
+    /* TEMP */
+    //result = terrainGetColor(x, y, 0.01);
+    
     return result;
 }
 
 static void _cbEditNoiseDone(NoiseGenerator* generator)
 {
-    terrainSetNoiseGenerator(generator);
+    noiseCopy(generator, _definition.height_noise);
+    terrainSetDefinition(_definition);
+    
     /* TODO Redraw only affected by terrain */
     guiPreviewRedrawAll();
 }
 
 static void _cbEditNoise(GtkWidget* widget, gpointer data)
 {
-    guiNoiseEdit(terrainGetNoiseGenerator(), _cbEditNoiseDone);
+    guiNoiseEdit(texturesGetDefinition(0).bump_noise, _cbEditNoiseDone);
 }
 
 void guiTerrainInit()

gui_qt/formwater.cpp

@@ -4,6 +4,7 @@
 #include <QColor>
 #include <math.h>
 
+#include "../lib_paysages/terrain.h"
 #include "../lib_paysages/water.h"
 #include "../lib_paysages/shared/functions.h"
 #include "../lib_paysages/shared/constants.h"

gui_qt/paysages-qt.pro.user

@@ -82,7 +82,7 @@
     <value key="ProjectExplorer.ProjectConfiguration.DisplayName" type="QString"></value>
     <value key="ProjectExplorer.ProjectConfiguration.Id" type="QString">Qt4ProjectManager.Qt4BuildConfiguration</value>
     <value key="Qt4ProjectManager.Qt4BuildConfiguration.BuildConfiguration" type="int">0</value>
-    <value key="Qt4ProjectManager.Qt4BuildConfiguration.BuildDirectory" type="QString">/home/michael/coding/paysages/gui_qt</value>
+    <value key="Qt4ProjectManager.Qt4BuildConfiguration.BuildDirectory" type="QString">/home/michael/workspace/paysages/gui_qt</value>
     <value key="Qt4ProjectManager.Qt4BuildConfiguration.QtVersionId" type="int">3</value>
     <value key="Qt4ProjectManager.Qt4BuildConfiguration.ToolChain" type="QString">ProjectExplorer.ToolChain.Gcc:/usr/bin/g++.x86-linux-generic-elf-32bit.</value>
     <value key="Qt4ProjectManager.Qt4BuildConfiguration.UseShadowBuild" type="bool">false</value>
@@ -133,9 +133,7 @@
     <value key="Qt4ProjectManager.Qt4RunConfiguration.ProFile" type="QString">paysages-qt.pro</value>
     <value key="Qt4ProjectManager.Qt4RunConfiguration.UseDyldImageSuffix" type="bool">false</value>
     <value key="Qt4ProjectManager.Qt4RunConfiguration.UseTerminal" type="bool">false</value>
-    <valuelist key="Qt4ProjectManager.Qt4RunConfiguration.UserEnvironmentChanges" type="QVariantList">
-     <value type="QString">LD_LIBRARY_PATH=../lib_paysages</value>
-    </valuelist>
+    <valuelist key="Qt4ProjectManager.Qt4RunConfiguration.UserEnvironmentChanges" type="QVariantList"/>
     <value key="Qt4ProjectManager.Qt4RunConfiguration.UserWorkingDirectory" type="QString"></value>
     <value key="RunConfiguration.QmlDebugServerPort" type="uint">3768</value>
     <value key="RunConfiguration.UseCppDebugger" type="bool">true</value>
@@ -150,7 +148,7 @@
  </data>
  <data>
   <variable>ProjectExplorer.Project.Updater.EnvironmentId</variable>
-  <value type="QString">{8abe6662-5ded-4243-9d4d-dbf8a3c19b83}</value>
+  <value type="QString">{d5145163-5b06-43da-aefd-e689d7a52ef8}</value>
  </data>
  <data>
   <variable>ProjectExplorer.Project.Updater.FileVersion</variable>

lib_paysages/auto.c

@@ -12,6 +12,8 @@
 #include "water.h"
 #include "clouds.h"
 #include "sky.h"
+#include "terrain.h"
+#include "textures.h"
 
 static int _cpu_count = 1;
 static int _is_rendering = 0;
@@ -100,6 +102,7 @@ void autoSetDaytimeFraction(double daytime)
 
 void autoSetRenderQuality(int quality)
 {
+    TerrainQuality terrain;
     WaterQuality water;
     CloudsQuality clouds;
 
@@ -114,7 +117,9 @@ void autoSetRenderQuality(int quality)
 
     renderSetQuality(quality);
 
-    terrainSetChunkSize(0.1 / (double)render_quality, 0.05 / (double)render_quality);
+    terrain.min_chunk_size = 0.1 / (double)render_quality;
+    terrain.visible_chunk_size = 0.05 / (double)render_quality;
+    terrainSetQuality(terrain);
 
     water.detail_boost = 5.0;
     water.force_detail = 0.0;
@@ -126,14 +131,14 @@ void autoSetRenderQuality(int quality)
 
 void autoGenRealisticLandscape(int seed)
 {
-    Texture* tex;
+    TerrainDefinition terrain;
     WaterDefinition water;
     CloudsDefinition cloud;
     SkyDefinition sky;
+    TextureDefinition texture;
     int layer;
     HeightModifier* mod;
     Zone* zone;
-    NoiseGenerator* noise;
 
     if (!seed)
     {
@@ -166,7 +171,7 @@ void autoGenRealisticLandscape(int seed)
     noiseAddLevelSimple(cloud.noise, 50.0 / 800.0, 0.001);
     noiseAddLevelSimple(cloud.noise, 50.0 / 1000.0, 0.0005);
     layer = cloudsAddLayer();
-    cloudsSetDefinition(layer, cloud);
+    //cloudsSetDefinition(layer, cloud);
 
     /* Water */
     water.height = 0.0;
@@ -215,14 +220,22 @@ void autoGenRealisticLandscape(int seed)
     sky.sun_radius = 0.02;
     skySetDefinition(sky);
 
-    noise = noiseCreateGenerator();
-    noiseGenerateBaseNoise(noise, 1048576);
-    noiseAddLevelsSimple(noise, 10, 10.0, 1.0);
-    noiseNormalizeHeight(noise, -12.0, 12.0, 0);
-    terrainSetNoiseGenerator(noise);
-    noiseDeleteGenerator(noise);
+    terrain = terrainCreateDefinition();
+    noiseGenerateBaseNoise(terrain.height_noise, 1048576);
+    noiseAddLevelsSimple(terrain.height_noise, 8, 10.0, 1.0);
+    noiseNormalizeHeight(terrain.height_noise, -12.0, 12.0, 0);
+    terrainSetDefinition(terrain);
+    terrainDeleteDefinition(terrain);
     
-    tex = textureCreateFromFile("./data/textures/rock3.jpg");
+    layer = texturesAddLayer();
+    texture = texturesCreateDefinition();
+    noiseGenerateBaseNoise(texture.bump_noise, 102400);
+    noiseAddLevelsSimple(texture.bump_noise, 6, 0.01, 0.01);
+    texture.color = COLOR_WHITE;
+    texturesSetDefinition(layer, texture);
+    texturesDeleteDefinition(texture);
+    
+    /*tex = textureCreateFromFile("./data/textures/rock3.jpg");
     tex->scaling_x = 0.003;
     tex->scaling_y = 0.003;
     tex->scaling_z = 0.003;
@@ -236,7 +249,7 @@ void autoGenRealisticLandscape(int seed)
     zone = zoneCreate(0.0);
     zoneAddHeightRange(zone, 1.0, -1.0, 0.0, 3.0, 15.0);
     zoneAddSteepnessRange(zone, 1.0, 0.0, 0.0, 0.3, 0.4);
-    terrainAddTexture(tex, 0.15, zone, 0.05);
+    terrainAddTexture(tex, 0.15, zone, 0.05);*/
 
     /*tex = textureCreateFromFile("./data/textures/snow1.jpg");
     tex->scaling_x = 0.001;
@@ -247,7 +260,7 @@ void autoGenRealisticLandscape(int seed)
     terrainAddTexture(tex, 0.5, zone, 0.1);*/
 
     /* DEBUG */
-    mod = modifierCreate();
+    /*mod = modifierCreate();
     zone = modifierGetZone(mod);
     zoneIncludeCircleArea(zone, 0.4, 0.0, 0.0, 8.0, 20.0);
     modifierActionFixValue(mod, -2.0);
@@ -261,7 +274,7 @@ void autoGenRealisticLandscape(int seed)
     zone = modifierGetZone(mod);
     zoneIncludeCircleArea(zone, 0.8, 0.0, 0.0, 0.3, 4.0);
     modifierActionFixValue(mod, -8.0);
-    terrainAddModifier(mod);
+    terrainAddModifier(mod);*/
 
     fogSetDistance(20.0, 100.0);
 }

lib_paysages/clouds.c

@@ -51,6 +51,8 @@ void cloudsLoad(FILE* f)
     int i;
     CloudsDefinition* layer;
     
+    /* FIXME Delete unused noise generators and add missing ones */
+
     _layers_count = toolsLoadInt(f);
     for (i = 0; i < _layers_count; i++)
     {

lib_paysages/main.c

@@ -11,6 +11,7 @@
 #include "shared/constants.h"
 #include "shared/functions.h"
 #include "shared/globals.h"
+#include "terrain.h"
 
 void paysagesInit()
 {
@@ -25,4 +26,17 @@ void paysagesInit()
     autoSetRenderQuality(5);
     autoGenRealisticLandscape(0);
     autoSetDaytime(8, 30);
+    
+    // DEBUG
+    double last_height, height, x;
+    last_height = height = 0.0;
+    x = 0.0;
+    while (height <= 1.0 || height >= last_height || last_height < 0.1)
+    {
+        last_height = height;
+        height = terrainGetHeight(x, 0.0);
+        x += 0.1;
+    }
+    cameraSetLocation(x - 2.0, height, 0.0);
+    cameraSetTarget(x - 1.0, height, 0.0);
 }

lib_paysages/shared/functions.h

@@ -172,28 +172,6 @@ Color skyProjectRay(Vector3 start, Vector3 direction);
 void skySetGradation(ColorGradation grad);
 void skyRender(RenderProgressCallback callback);
 
-/* terrain.c */
-void terrainSave(FILE* f);
-void terrainLoad(FILE* f);
-void terrainInit();
-NoiseGenerator* terrainGetNoiseGenerator();
-void terrainSetNoiseGenerator(NoiseGenerator* generator);
-void terrainAddTexture(Texture* tex, double subsurf_scale, Zone* zone, double border_scaling);
-void terrainAddModifier(HeightModifier* modifier);
-double terrainGetHeight(double x, double z);
-double terrainGetHeightNormalized(double x, double z);
-Color terrainGetColor(double x, double z, double precision);
-double terrainGetShadow(Vector3 start, Vector3 direction);
-int terrainProjectRay(Vector3 start, Vector3 direction, Vector3* hit_point, Color* hit_color);
-void terrainSetChunkSize(double min_size, double visible_size);
-void terrainRender(RenderProgressCallback callback);
-
-/* textures.c */
-void texturesSave(FILE* f);
-void texturesLoad(FILE* f);
-Texture* textureCreateFromFile(const char* filename);
-Color textureApply(Texture* tex, Vector3 location, Vector3 normal);
-
 /* tools.c */
 double toolsRandom();
 double toolsBicubicInterpolate(double stencil[16], double x, double y);
@@ -209,6 +187,7 @@ Zone* zoneCreate();
 void zoneDelete(Zone* zone);
 void zoneSave(Zone* zone, FILE* f);
 void zoneLoad(Zone* zone, FILE* f);
+void zoneCopy(Zone* source, Zone* destination);
 void zoneIncludeCircleArea(Zone* zone, double value, double centerx, double centerz, double softradius, double hardradius);
 void zoneExcludeCircleArea(Zone* zone, double centerx, double centerz, double softradius, double hardradius);
 void zoneAddHeightRange(Zone* zone, double value, double hardmin, double softmin, double softmax, double hardmax);

lib_paysages/shared/types.h

@@ -87,16 +87,6 @@ typedef struct
     void* data;
 } Array;
 
-typedef struct {
-    void* pixels;
-    int bytes_per_pixel;
-    int picture_width;
-    int picture_height;
-    double scaling_x;
-    double scaling_y;
-    double scaling_z;
-} Texture;
-
 struct NoiseLevel
 {
     double scaling;

lib_paysages/terrain.c

@@ -6,118 +6,103 @@
 #include "shared/globals.h"
 #include "shared/constants.h"
 
+#include "textures.h"
 #include "water.h"
+#include "terrain.h"
 
-#define MAX_TEXTURES 10
 #define MAX_MODIFIERS 50
 
-typedef struct {
-    Texture* tex;
-    double subsurf_scale;
-    Zone* zone;
-    double border_scaling;
-} TerrainTexture;
-
-static NoiseGenerator* _noise_height;
-static NoiseGenerator* _noise_texture_borders;
+static TerrainDefinition _definition;
+static TerrainQuality _quality;
+static TerrainEnvironment _environment;
 static double _max_height = 1.0;
-static double _base_chunk_size = 1.0, _visible_chunk_size = 1.0;
-static int _texture_count = 0;
-static TerrainTexture _textures[MAX_TEXTURES];
+
 static int _modifiers_count = 0;
 static HeightModifier* _modifiers[MAX_MODIFIERS];
 
+void terrainInit()
+{
+    _definition = terrainCreateDefinition();
+    _max_height = noiseGetMaxValue(_definition.height_noise);
+}
+
 void terrainSave(FILE* f)
 {
-    noiseSave(_noise_height, f);
-    noiseSave(_noise_texture_borders, f);
+    noiseSave(_definition.height_noise, f);
 
-    toolsSaveDouble(f, _max_height);
-    toolsSaveDouble(f, _base_chunk_size);
-    toolsSaveDouble(f, _visible_chunk_size);
-
-    /* TODO Textures */
     /* TODO Modifiers */
 }
 
 void terrainLoad(FILE* f)
 {
-    noiseLoad(_noise_height, f);
-    noiseLoad(_noise_texture_borders, f);
-
-    _max_height = toolsLoadDouble(f);
-    _base_chunk_size = toolsLoadDouble(f);
-    _visible_chunk_size = toolsLoadDouble(f);
+    noiseLoad(_definition.height_noise, f);
+    _max_height = noiseGetMaxValue(_definition.height_noise);
 }
 
-void terrainInit()
+TerrainDefinition terrainCreateDefinition()
 {
-    _noise_height = noiseCreateGenerator();
-    _max_height = noiseGetMaxValue(_noise_height);
+    TerrainDefinition definition;
     
-    _noise_texture_borders = noiseCreateGenerator();
-    noiseGenerateBaseNoise(_noise_texture_borders, 100);
-    noiseAddLevelsSimple(_noise_texture_borders, 10, 1.0, 1.0);
-    noiseNormalizeHeight(_noise_texture_borders, 0.0, 1.0, 0);
+    definition.height_noise = noiseCreateGenerator();
+     
+    return definition;
 }
 
-NoiseGenerator* terrainGetNoiseGenerator()
+void terrainDeleteDefinition(TerrainDefinition definition)
 {
-    return _noise_height;
+    noiseDeleteGenerator(definition.height_noise);
 }
 
-void terrainSetNoiseGenerator(NoiseGenerator* generator)
+void terrainCopyDefinition(TerrainDefinition source, TerrainDefinition* destination)
 {
-    noiseCopy(generator, _noise_height);
-    _max_height = noiseGetMaxValue(_noise_height);
-    /* FIXME Max height depends on modifiers*/
+    noiseCopy(source.height_noise, destination->height_noise);
 }
 
-void terrainAddTexture(Texture* tex, double subsurf_scale, Zone* zone, double border_scaling)
+void terrainSetDefinition(TerrainDefinition definition)
 {
-    TerrainTexture ttex;
-    if (_texture_count < MAX_TEXTURES)
-    {
-        ttex.tex = tex;
-        ttex.subsurf_scale = subsurf_scale;
-        ttex.zone = zone;
-        ttex.border_scaling = border_scaling;
-
-        _textures[_texture_count++] = ttex;
-    }
+    terrainCopyDefinition(definition, &_definition);
+    _max_height = noiseGetMaxValue(_definition.height_noise);
+    /* FIXME _max_height depends on modifiers */
 }
 
-void terrainAddModifier(HeightModifier* modifier)
+TerrainDefinition terrainGetDefinition()
 {
-    if (_modifiers_count < MAX_MODIFIERS)
-    {
-        _modifiers[_modifiers_count++] = modifier;
-    }
+    return _definition;
 }
 
-static inline double _getHeight(double x, double z, double precision)
+void terrainSetQuality(TerrainQuality quality)
+{
+    _quality = quality;
+}
+
+TerrainQuality terrainGetQuality()
+{
+    return _quality;
+}
+
+static inline double _getHeight(TerrainDefinition* definition, double x, double z, double detail)
 {
     Vector3 location;
-    int i;
+    /*int i;*/
     
     location.x = x;
-    location.y = noiseGet2DDetail(_noise_height, x, z, precision);
+    location.y = noiseGet2DDetail(definition->height_noise, x, z, detail);
     location.z = z;
     
-    for (i = 0; i < _modifiers_count; i++)
+    /*for (i = 0; i < _modifiers_count; i++)
     {
         location = modifierApply(_modifiers[i], location);
-    }
+    }*/
     
     return location.y;
 }
 
-static inline Vector3 _getPoint(double x, double z, double precision)
+static inline Vector3 _getPoint(TerrainDefinition* definition, double x, double z, double detail)
 {
     Vector3 result;
 
     result.x = x;
-    result.y = _getHeight(x, z, precision);
+    result.y = _getHeight(definition, x, z, detail);
     result.z = z;
 
     return result;
@@ -143,7 +128,7 @@ double terrainGetShadow(Vector3 start, Vector3 direction)
         inc_vector = v3Scale(direction, inc_value);
         length += v3Norm(inc_vector);
         start = v3Add(start, inc_vector);
-        height = _getHeight(start.x, start.z, inc_value);
+        height = _getHeight(&_definition, start.x, start.z, inc_value);
         diff = start.y - height;
         if (diff < 0.0)
         {
@@ -175,78 +160,12 @@ double terrainGetShadow(Vector3 start, Vector3 direction)
     }
 }
 
-static inline Vector3 _getNormal(Vector3 point, double scale)
+static Color _getColor(TerrainDefinition* definition, Vector3 point, double precision)
 {
-    Vector3 dpoint, ref, normal;
-
-    ref.x = 0.0;
-    ref.y = 0.0;
-
-    dpoint = _getPoint(point.x - scale, point.z, scale * 0.3);
-    ref.z = -1.0;
-    normal = v3Normalize(v3Cross(ref, v3Sub(dpoint, point)));
-
-    dpoint = _getPoint(point.x + scale, point.z, scale * 0.3);
-    ref.z = 1.0;
-    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
-
-    ref.z = 0.0;
-
-    dpoint = _getPoint(point.x, point.z - scale, scale * 0.3);
-    ref.x = 1.0;
-    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
-
-    dpoint = _getPoint(point.x, point.z + scale, scale * 0.3);
-    ref.x = -1.0;
-    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
-
-    return v3Normalize(normal);
-}
-
-static Color _getColor(Vector3 point, double precision)
-{
-    Vector3 normal;
-    Color color, tex_color;
-    int i;
-    double shadowed, coverage, value;
-
-    shadowed = terrainGetShadow(point, sun_direction_inv);
-
-    /* Apply textures and subsurface lighting */
-    color = COLOR_GREEN;
-    for (i = 0; i < _texture_count; i++)
-    {
-        /* TODO Don't recalculate normals for same precision */
-        /* TODO Don't compute textures that will be totally covered */
-        normal = _getNormal(point, precision * _textures[i].subsurf_scale);
-
-        coverage = zoneGetValue(_textures[i].zone, point, normal);
-        if (coverage > 0.0)
-        {
-            if (coverage < 1.0)
-            {
-                value = noiseGet2DTotal(_noise_texture_borders, point.x / _textures[i].border_scaling, point.z / _textures[i].border_scaling);
-                if (value < coverage)
-                {
-                    /* TODO Make smoothness precision-dependant */
-                    value = (coverage - value) / 0.1;
-                    coverage = (value > 1.0) ? 1.0 : value;
-                }
-                else
-                {
-                    coverage = 0.0;
-                }
-            }
-            if (coverage > 0.0)
-            {
-                tex_color = textureApply(_textures[i].tex, point, normal);
-                tex_color = lightingApply(point, normal, shadowed, tex_color, 0.1, 0.1);
-                tex_color.a = coverage;
-                colorMask(&color, &tex_color);
-            }
-        }
-    }
+    Color color;
 
+    /* FIXME Environment for textures should be customized */
+    color = texturesGetColor(point);
     color = fogApplyToLocation(point, color);
     //color = cloudsApplySegmentResult(color, camera_location, point);
 
@@ -269,13 +188,13 @@ int terrainProjectRay(Vector3 start, Vector3 direction, Vector3* hit_point, Colo
         inc_vector = v3Scale(direction, inc_value);
         length += v3Norm(inc_vector);
         start = v3Add(start, inc_vector);
-        height = _getHeight(start.x, start.z, inc_value);
+        height = _getHeight(&_definition, start.x, start.z, inc_value);
         diff = start.y - height;
         if (diff < 0.0)
         {
             start.y = height;
             *hit_point = start;
-            *hit_color = _getColor(start, inc_value);
+            *hit_color = _getColor(&_definition, start, inc_value);
             return 1;
         }
 
@@ -304,19 +223,19 @@ static int _postProcessFragment(RenderFragment* fragment)
     point = fragment->vertex.location;
     precision = renderGetPrecision(point);
 
-    point = _getPoint(point.x, point.z, precision);
+    point = _getPoint(&_definition, point.x, point.z, precision);
 
-    fragment->vertex.color = _getColor(point, precision);
+    fragment->vertex.color = _getColor(&_definition, point, precision);
 
     return 1;
 }
 
-static Vertex _getFirstPassVertex(double x, double z, double precision)
+static Vertex _getFirstPassVertex(double x, double z, double detail)
 {
     Vertex result;
     double value;
 
-    result.location = _getPoint(x, z, 0.0);
+    result.location = _getPoint(&_definition, x, z, 0.0);
     value = sin(x) * sin(x) * cos(z) * cos(z);
     result.color.r = value;
     result.color.g = value;
@@ -341,23 +260,22 @@ static void _renderQuad(double x, double z, double size)
 
 double terrainGetHeight(double x, double z)
 {
-    return _getHeight(x, z, 0.01 / (double)render_quality);
+    return _getHeight(&_definition, x, z, 0.01 / (double)render_quality);
 }
 
 double terrainGetHeightNormalized(double x, double z)
 {
-    return 0.5 + _getHeight(x, z, 0.01 / (double)render_quality) / (_max_height * 2.0);
+    return 0.5 + _getHeight(&_definition, x, z, 0.01 / (double)render_quality) / (_max_height * 2.0);
 }
 
-Color terrainGetColor(double x, double z, double precision)
+Color terrainGetColorCustom(double x, double z, double detail, TerrainDefinition* definition, TerrainQuality* quality, TerrainEnvironment* environment)
 {
-    return _getColor(_getPoint(x, z, precision), precision);
+    return _getColor(definition, _getPoint(definition, x, z, detail), detail);
 }
 
-void terrainSetChunkSize(double min_size, double visible_size)
+Color terrainGetColor(double x, double z, double detail)
 {
-    _base_chunk_size = min_size;
-    _visible_chunk_size = visible_size;
+    return terrainGetColorCustom(x, z, detail, &_definition, &_quality, &_environment);
 }
 
 void terrainRender(RenderProgressCallback callback)
@@ -370,8 +288,8 @@ void terrainRender(RenderProgressCallback callback)
     chunk_factor = 1;
     chunk_count = 2;
     radius_int = 0.0;
-    radius_ext = _base_chunk_size;
-    chunk_size = _base_chunk_size;
+    radius_ext = _quality.min_chunk_size;
+    chunk_size = _quality.min_chunk_size;
 
     while (radius_ext < 1000.0)
     {
@@ -388,14 +306,14 @@ void terrainRender(RenderProgressCallback callback)
             _renderQuad(cx - radius_ext, cz + radius_int - chunk_size * i, chunk_size);
         }
 
-        if (chunk_count % 64 == 0 && chunk_size / radius_int < _visible_chunk_size)
+        if (chunk_count % 64 == 0 && chunk_size / radius_int < _quality.visible_chunk_size)
         {
             chunk_count /= 2;
             chunk_factor *= 2;
             /* TODO Fill in gaps with triangles */
         }
         chunk_count += 2;
-        chunk_size = _base_chunk_size * chunk_factor;
+        chunk_size = _quality.min_chunk_size * chunk_factor;
         radius_int = radius_ext;
         radius_ext += chunk_size;
     }

lib_paysages/terrain.h

@@ -0,0 +1,54 @@
+#ifndef _PAYSAGES_TERRAIN_H_
+#define _PAYSAGES_TERRAIN_H_
+
+#include "shared/types.h"
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct
+{
+    NoiseGenerator* height_noise;
+} TerrainDefinition;
+
+typedef struct
+{
+    double min_chunk_size;
+    double visible_chunk_size;
+} TerrainQuality;
+
+typedef struct
+{
+    int unused;
+} TerrainEnvironment;
+
+void terrainInit();
+void terrainSave(FILE* f);
+void terrainLoad(FILE* f);
+
+TerrainDefinition terrainCreateDefinition();
+void terrainDeleteDefinition(TerrainDefinition definition);
+void terrainCopyDefinition(TerrainDefinition source, TerrainDefinition* destination);
+void terrainSetDefinition(TerrainDefinition definition);
+TerrainDefinition terrainGetDefinition();
+
+void terrainSetQuality(TerrainQuality quality);
+TerrainQuality terrainGetQuality();
+
+double terrainGetShadow(Vector3 start, Vector3 direction);
+int terrainProjectRay(Vector3 start, Vector3 direction, Vector3* hit_point, Color* hit_color);
+double terrainGetHeightCustom(double x, double z, TerrainDefinition* definition);
+double terrainGetHeight(double x, double z);
+double terrainGetHeightNormalizedCustom(double x, double z, TerrainDefinition* definition);
+double terrainGetHeightNormalized(double x, double z);
+Color terrainGetColorCustom(double x, double z, double detail, TerrainDefinition* definition, TerrainQuality* quality, TerrainEnvironment* environment);
+Color terrainGetColor(double x, double z, double detail);
+void terrainRender(RenderProgressCallback callback);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

lib_paysages/textures.c

@@ -1,137 +1,201 @@
 #include <math.h>
 #include <stdlib.h>
 #include <string.h>
+#include <assert.h>
 
 #include "shared/types.h"
 #include "shared/functions.h"
 #include "shared/constants.h"
 #include "shared/globals.h"
 
-#include "IL/il.h"
-#include "IL/ilu.h"
+#include "textures.h"
+#include "terrain.h"
 
 #define TEXTURES_MAX 50
+static TextureQuality _quality;
+static TextureEnvironment _environment;
 static int _textures_count = 0;
-static Texture _textures[TEXTURES_MAX];
+static TextureDefinition _textures[TEXTURES_MAX];
+
+void texturesInit()
+{
+    _textures_count = 0;
+}
 
 void texturesSave(FILE* f)
 {
+    int i;
+    
+    toolsSaveInt(f, _textures_count);
+    for (i = 0; i < _textures_count; i++)
+    {
+        zoneSave(_textures[i].zone, f);
+        noiseSave(_textures[i].bump_noise, f);
+        colorSave(_textures[i].color, f);
+    }
 }
 
 void texturesLoad(FILE* f)
 {
+    // TODO
 }
 
-Texture* textureCreateFromFile(const char* filename)
+int texturesGetLayerCount()
 {
-    Texture* result;
-    ILuint imageid;
+    return _textures_count;
+}
 
-    if (_textures_count >= TEXTURES_MAX)
+int texturesAddLayer()
 {
-        return _textures + (TEXTURES_MAX - 1);
+    if (_textures_count < TEXTURES_MAX)
+    {
+        _textures[_textures_count] = texturesCreateDefinition();
+        
+        return _textures_count++;
     }
     else
     {
-        result = _textures + _textures_count;
-        _textures_count++;
+        return -1;
+    }
+}
 
-        ilGenImages(1, &imageid);
-        ilBindImage(imageid);
-        ilLoadImage(filename);
+void texturesDeleteLayer(int layer)
+{
+    // TODO
+}
 
-        result->bytes_per_pixel = ilGetInteger(IL_IMAGE_BYTES_PER_PIXEL);
-        result->picture_width = ilGetInteger(IL_IMAGE_WIDTH);
-        result->picture_height = ilGetInteger(IL_IMAGE_HEIGHT);
-        result->pixels = malloc(result->bytes_per_pixel * result->picture_width * result->picture_height);
-        memcpy(result->pixels, ilGetData(), result->bytes_per_pixel * result->picture_width * result->picture_height);
-        result->scaling_x = 1.0;
-        result->scaling_y = 1.0;
-        result->scaling_z = 1.0;
+TextureDefinition texturesCreateDefinition()
+{
+    TextureDefinition result;
 
-        ilDeleteImages(1, &imageid);
+    result.zone = zoneCreate();
+    result.bump_noise = noiseCreateGenerator();
+    result.color = COLOR_GREEN;
 
     return result;
 }
+
+void texturesDeleteDefinition(TextureDefinition definition)
+{
+    zoneDelete(definition.zone);
+    noiseDeleteGenerator(definition.bump_noise);
 }
 
-static inline Color _getRawValue(Texture* tex, int x, int y)
+void texturesCopyDefinition(TextureDefinition source, TextureDefinition* destination)
+{
+    destination->color = source.color;
+    noiseCopy(source.bump_noise, destination->bump_noise);
+    zoneCopy(source.zone, destination->zone);
+}
+
+void texturesSetDefinition(int layer, TextureDefinition definition)
+{
+    TextureDefinition* destination;
+
+    if (layer >= 0 && layer < _textures_count)
+    {
+        destination = _textures + layer;
+        texturesCopyDefinition(definition, destination);
+    }
+}
+
+TextureDefinition texturesGetDefinition(int layer)
+{
+    assert(layer >= 0);
+    assert(layer < _textures_count);
+    
+    return _textures[layer];
+}
+
+void texturesSetQuality(TextureQuality quality)
+{
+    _quality = quality;
+}
+
+TextureQuality texturesGetQuality()
+{
+    return _quality;
+}
+
+static inline Vector3 _getNormal(TextureDefinition* definition, Vector3 point, double scale)
+{
+    Vector3 dpoint, ref, normal;
+
+    ref.x = 0.0;
+    ref.y = 0.0;
+
+    dpoint.x = point.x - scale;
+    dpoint.z = point.z;
+    dpoint.y = terrainGetHeight(dpoint.x, dpoint.z) + noiseGet2DTotal(definition->bump_noise, dpoint.x, dpoint.z);
+    ref.z = -1.0;
+    normal = v3Normalize(v3Cross(ref, v3Sub(dpoint, point)));
+
+    dpoint.x = point.x + scale;
+    dpoint.z = point.z;
+    dpoint.y = terrainGetHeight(dpoint.x, dpoint.z) + noiseGet2DTotal(definition->bump_noise, dpoint.x, dpoint.z);
+    ref.z = 1.0;
+    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
+
+    ref.z = 0.0;
+
+    dpoint.x = point.x;
+    dpoint.z = point.z - scale;
+    dpoint.y = terrainGetHeight(dpoint.x, dpoint.z) + noiseGet2DTotal(definition->bump_noise, dpoint.x, dpoint.z);
+    ref.x = 1.0;
+    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
+
+    dpoint.x = point.x;
+    dpoint.z = point.z + scale;
+    dpoint.y = terrainGetHeight(dpoint.x, dpoint.z) + noiseGet2DTotal(definition->bump_noise, dpoint.x, dpoint.z);
+    ref.x = -1.0;
+    normal = v3Add(normal, v3Normalize(v3Cross(ref, v3Sub(dpoint, point))));
+
+    return v3Normalize(normal);
+}
+
+Color texturesGetLayerColorCustom(Vector3 location, double shadowing, double detail, TextureDefinition* definition, TextureQuality* quality, TextureEnvironment* environment)
 {
     Color result;
-    void* texdata;
+    Vector3 normal;
+    double coverage;
     
-    x = x % tex->picture_width;
-    if (x < 0)
+    result.a = 0.0;
+    normal = _getNormal(definition, location, detail * 0.3);
+
+    coverage = zoneGetValue(definition->zone, location, normal);
+    if (coverage > 0.0)
     {
-        x += tex->picture_width;
+        result = lightingApply(location, normal, shadowing, definition->color, 0.1, 0.1);
+        result.a = coverage;
     }
-    y = y % tex->picture_height;
-    if (y < 0)
-    {
-        y += tex->picture_height;
+    return result;
 }
 
-    texdata = tex->pixels + (y * tex->picture_width + x) * tex->bytes_per_pixel;
+Color texturesGetColorCustom(Vector3 location, double shadowing, double detail, TextureQuality* quality, TextureEnvironment* environment)
+{
+    Color result, tex_color;
+    int i;
     
-    result.r = ((double)(unsigned int)*((unsigned char*)texdata)) / 255.0;
-    result.g = ((double)(unsigned int)*((unsigned char*)(texdata + 1))) / 255.0;
-    result.b = ((double)(unsigned int)*((unsigned char*)(texdata + 2))) / 255.0;
+    result = COLOR_GREEN;
+    for (i = 0; i < _textures_count; i++)
+    {
+        /* TODO Do not compute layers fully covered */
+        tex_color = texturesGetLayerColorCustom(location, shadowing, detail, _textures + i, quality, environment);
+        if (tex_color.a > 0.0001)
+        {
+            colorMask(&result, &tex_color);
+        }
+    }
     
     return result;
 }
 
-static inline Color _getInterpolatedValue(Texture* tex, double fx, double fy)
+Color texturesGetColor(Vector3 location)
 {
-    Color result;
-    double r[16];
-    double g[16];
-    double b[16];
-    int ix, iy;
-    int sx, sy;
+    double shadowing;
     
-    ix = (int)floor(fx);
-    iy = (int)floor(fy);
-    fx -= (double)ix;
-    fy -= (double)iy;
+    /* TODO Use environment to get lights to apply */
+    shadowing = terrainGetShadow(location, sun_direction_inv);
     
-    for (sy = 0; sy < 4; sy++)
-    {
-        for (sx = 0; sx < 4; sx++)
-        {
-            result = _getRawValue(tex, ix + sx - 1, iy + sy - 1);
-            r[sy * 4 + sx] = result.r;
-            g[sy * 4 + sx] = result.g;
-            b[sy * 4 + sx] = result.b;
+    return texturesGetColorCustom(location, shadowing, renderGetPrecision(location), &_quality, &_environment);
 }
-    }
-
-    result.r = toolsBicubicInterpolate(r, fx, fy);
-    result.g = toolsBicubicInterpolate(g, fx, fy);
-    result.b = toolsBicubicInterpolate(b, fx, fy);
-    result.a = 1.0;
-    return result;
-}
-
-Color textureApply(Texture* tex, Vector3 location, Vector3 normal)
-{
-    Color col_x, col_y, col_z, result;
-    double x, y, z;
-    double distance;
-
-    distance = v3Norm(v3Sub(camera_location, location)) / 10.0;
-
-    x = location.x / (tex->scaling_x * distance);
-    y = location.y / (tex->scaling_y * distance);
-    z = location.z / (tex->scaling_z * distance);
-
-    col_x = _getInterpolatedValue(tex, y, z);
-    col_y = _getInterpolatedValue(tex, x, z);
-    col_z = _getInterpolatedValue(tex, x, y);
-
-    result.r = (col_x.r + col_y.r + col_z.r) / 3.0;
-    result.g = (col_x.g + col_y.g + col_z.g) / 3.0;
-    result.b = (col_x.b + col_y.b + col_z.b) / 3.0;
-    result.a = (col_x.a + col_y.a + col_z.a) / 3.0;
-    return result;
-}
-

lib_paysages/textures.h

@@ -0,0 +1,53 @@
+#ifndef _PAYSAGES_TEXTURES_H_
+#define _PAYSAGES_TEXTURES_H_
+
+#include "shared/types.h"
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct
+{
+    Zone* zone;
+    NoiseGenerator* bump_noise;
+    Color color;
+} TextureDefinition;
+
+typedef struct
+{
+    int unused;
+} TextureQuality;
+
+typedef struct
+{
+    int unused;
+} TextureEnvironment;
+
+void texturesInit();
+void texturesSave(FILE* f);
+void texturesLoad(FILE* f);
+
+int texturesGetLayerCount();
+int texturesAddLayer();
+void texturesDeleteLayer(int layer);
+
+TextureDefinition texturesCreateDefinition();
+void texturesDeleteDefinition(TextureDefinition definition);
+void texturesCopyDefinition(TextureDefinition source, TextureDefinition* destination);
+void texturesSetDefinition(int layer, TextureDefinition definition);
+TextureDefinition texturesGetDefinition(int layer);
+
+void texturesSetQuality(TextureQuality quality);
+TextureQuality texturesGetQuality();
+
+Color texturesGetLayerColorCustom(Vector3 location, double shadowing, double detail, TextureDefinition* definition, TextureQuality* quality, TextureEnvironment* environment);
+Color texturesGetColorCustom(Vector3 location, double shadowing, double detail, TextureQuality* quality, TextureEnvironment* environment);
+Color texturesGetColor(Vector3 location);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

lib_paysages/water.c

@@ -2,7 +2,9 @@
 #include "shared/functions.h"
 #include "shared/constants.h"
 #include "shared/globals.h"
+
 #include "water.h"
+#include "terrain.h"
 
 #include <math.h>
 

lib_paysages/zone.c

@@ -39,14 +39,6 @@ struct Zone {
 #include "shared/types.h"
 #include "shared/functions.h"
 
-void zoneSave(Zone* zone, FILE* f)
-{
-}
-
-void zoneLoad(Zone* zone, FILE* f)
-{
-}
-
 Zone* zoneCreate()
 {
     Zone* result;
@@ -65,6 +57,101 @@ void zoneDelete(Zone* zone)
     free(zone);
 }
 
+void zoneSave(Zone* zone, FILE* f)
+{
+    int i;
+    
+    toolsSaveInt(f, zone->height_ranges_count);
+    for (i = 0; i < zone->height_ranges_count; i++)
+    {
+        toolsSaveDouble(f, zone->height_ranges[i].value);
+        toolsSaveDouble(f, zone->height_ranges[i].hardmin);
+        toolsSaveDouble(f, zone->height_ranges[i].softmin);
+        toolsSaveDouble(f, zone->height_ranges[i].softmax);
+        toolsSaveDouble(f, zone->height_ranges[i].hardmax);
+    }
+    
+    toolsSaveInt(f, zone->steepness_ranges_count);
+    for (i = 0; i < zone->steepness_ranges_count; i++)
+    {
+        toolsSaveDouble(f, zone->steepness_ranges[i].value);
+        toolsSaveDouble(f, zone->steepness_ranges[i].hardmin);
+        toolsSaveDouble(f, zone->steepness_ranges[i].softmin);
+        toolsSaveDouble(f, zone->steepness_ranges[i].softmax);
+        toolsSaveDouble(f, zone->steepness_ranges[i].hardmax);
+    }
+    
+    toolsSaveInt(f, zone->circles_included_count);
+    for (i = 0; i < zone->circles_included_count; i++)
+    {
+        toolsSaveDouble(f, zone->circles_included[i].value);
+        toolsSaveDouble(f, zone->circles_included[i].centerx);
+        toolsSaveDouble(f, zone->circles_included[i].centerz);
+        toolsSaveDouble(f, zone->circles_included[i].softradius);
+        toolsSaveDouble(f, zone->circles_included[i].hardradius);
+    }
+    
+    toolsSaveInt(f, zone->circles_excluded_count);
+    for (i = 0; i < zone->circles_excluded_count; i++)
+    {
+        toolsSaveDouble(f, zone->circles_excluded[i].value);
+        toolsSaveDouble(f, zone->circles_excluded[i].centerx);
+        toolsSaveDouble(f, zone->circles_excluded[i].centerz);
+        toolsSaveDouble(f, zone->circles_excluded[i].softradius);
+        toolsSaveDouble(f, zone->circles_excluded[i].hardradius);
+    }
+}
+
+void zoneLoad(Zone* zone, FILE* f)
+{
+    int i;
+    
+    zone->height_ranges_count = toolsLoadInt(f);
+    for (i = 0; i < zone->height_ranges_count; i++)
+    {
+        zone->height_ranges[i].value = toolsLoadDouble(f);
+        zone->height_ranges[i].hardmin = toolsLoadDouble(f);
+        zone->height_ranges[i].softmin = toolsLoadDouble(f);
+        zone->height_ranges[i].softmax = toolsLoadDouble(f);
+        zone->height_ranges[i].hardmax = toolsLoadDouble(f);
+    }
+    
+    zone->steepness_ranges_count = toolsLoadInt(f);
+    for (i = 0; i < zone->steepness_ranges_count; i++)
+    {
+        zone->steepness_ranges[i].value = toolsLoadDouble(f);
+        zone->steepness_ranges[i].hardmin = toolsLoadDouble(f);
+        zone->steepness_ranges[i].softmin = toolsLoadDouble(f);
+        zone->steepness_ranges[i].softmax = toolsLoadDouble(f);
+        zone->steepness_ranges[i].hardmax = toolsLoadDouble(f);
+    }
+    
+    zone->circles_included_count = toolsLoadInt(f);
+    for (i = 0; i < zone->circles_included_count; i++)
+    {
+        zone->circles_included[i].value = toolsLoadDouble(f);
+        zone->circles_included[i].centerx = toolsLoadDouble(f);
+        zone->circles_included[i].centerz = toolsLoadDouble(f);
+        zone->circles_included[i].softradius = toolsLoadDouble(f);
+        zone->circles_included[i].hardradius = toolsLoadDouble(f);
+    }
+    
+    zone->circles_excluded_count = toolsLoadInt(f);
+    for (i = 0; i < zone->circles_excluded_count; i++)
+    {
+        zone->circles_excluded[i].value = toolsLoadDouble(f);
+        zone->circles_excluded[i].centerx = toolsLoadDouble(f);
+        zone->circles_excluded[i].centerz = toolsLoadDouble(f);
+        zone->circles_excluded[i].softradius = toolsLoadDouble(f);
+        zone->circles_excluded[i].hardradius = toolsLoadDouble(f);
+    }
+}
+
+void zoneCopy(Zone* source, Zone* destination)
+{
+    *source = *destination;
+}
+
 void zoneIncludeCircleArea(Zone* zone, double value, double centerx, double centerz, double softradius, double hardradius)
 {
     Circle circle = {value, centerx, centerz, softradius, hardradius};