paysages : WIP on several parts.

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@515 b1fd45b6-86a6-48da-8261-f70d1f35bdcc

TODO

@@ -12,9 +12,7 @@ Technology Preview 2 :
    => Restore water filtering
    => Restore cloud lighting
    => Restore and improve skydome lighting
-- Apply Preetham's model usage
-   => Convert to HDR rendering.
-   => Apply model's aerial perspective.
+- Hide Preetham's model.
 - Find a proper model for night sky (maybe Shirley).
 - Improve textures (current model is greatly incorrect).
    => Separate models (basic texture and covering texture).
@@ -29,6 +27,7 @@ Technology Preview 2 :
 Technlogy Preview 3 :
 - Fully move layer management from BaseForm to BaseFormLayer.
 - Start vegetation system.
+- Add tone-mapping and exposure control to final image.
 - Allow render saving in HDR compatible format.
 - Add clouds to explorer with 3d textures.
 - Add fresnel effect to specular lighting.

gui_qt/dialogheightmap.cpp

@@ -55,6 +55,8 @@ DialogHeightMap::DialogHeightMap(QWidget* parent, TerrainDefinition* terrain) :
     // Viewer layout (3d display + sliders)
     _3dview = new WidgetHeightMap(viewer, _value_modified);
     viewer_layout->addWidget(_3dview, 0, 0);
+    connect(_3dview, SIGNAL(heightmapChanged()), this, SLOT(heightmapChanged()));
+
     slider = new QSlider(Qt::Horizontal, viewer);
     slider->setRange(0, 1000);
     connect(slider, SIGNAL(valueChanged(int)), this, SLOT(angleHChanged(int)));
@@ -65,6 +67,9 @@ DialogHeightMap::DialogHeightMap(QWidget* parent, TerrainDefinition* terrain) :
     viewer_layout->addWidget(slider, 0, 1);
 
     // Panel layout
+    _info_memory = new QLabel(panel);
+    panel->layout()->addWidget(_info_memory);
+
     /*button = new QPushButton(tr("Load from picture file"), panel);
     connect(button, SIGNAL(clicked()), this, SLOT(loadFromFile()));
     panel->layout()->addWidget(button);*/
@@ -175,6 +180,11 @@ void DialogHeightMap::brushStrengthChanged(int value)
     _3dview->setBrushStrength((double)value / 2000.0);
 }
 
+void DialogHeightMap::heightmapChanged()
+{
+    _info_memory->setText(tr("Memory used: %1").arg(_3dview->getMemoryStats()));
+}
+
 /*void DialogHeightMap::loadFromFile()
 {
     QString filepath = QFileDialog::getOpenFileName(this, tr("Paysages 3D - Choose a picture to load"), QString(), tr("Images (*.jpg *.jpeg *.bmp *.png)"));

gui_qt/dialogheightmap.h

@@ -24,11 +24,13 @@ private slots:
     void brushSizeChanged(int value);
     void brushSmoothingChanged(int value);
     void brushStrengthChanged(int value);
+    void heightmapChanged();
     //void loadFromFile();
 
 private:
     TerrainDefinition* _value_original;
     TerrainDefinition* _value_modified;
+    QLabel* _info_memory;
     WidgetHeightMap* _3dview;
 };
 

gui_qt/formrender.cpp

@@ -80,7 +80,7 @@ private:
         return texturesGetColor((TexturesDefinition*)(renderer->customData[1]), renderer, location.x, location.z, precision);
     }
 
-    static Vector3 _getCameraLocation(Renderer* renderer, Vector3 location)
+    static Vector3 _getCameraLocation(Renderer*, Vector3 location)
     {
         return v3Add(location, v3Scale(VECTOR_UP, 50.0));
     }

gui_qt/formterrain.cpp

@@ -76,5 +76,8 @@ void FormTerrain::configChangeEvent()
 
 void FormTerrain::startPainting()
 {
-    DialogHeightMap::editHeightMap(this, _definition);
+    if (DialogHeightMap::editHeightMap(this, _definition))
+    {
+        configChangeEvent();
+    }
 }

gui_qt/widgetheightmap.cpp

@@ -17,6 +17,8 @@ WidgetHeightMap::WidgetHeightMap(QWidget *parent, TerrainDefinition* terrain):
     setCursor(Qt::CrossCursor);
     startTimer(100);
 
+    _memory_stats = terrainGetMemoryStats(terrain);
+
     _terrain = terrain;
     _renderer = rendererCreate();
     TerrainRendererClass.bind(_renderer, _terrain);
@@ -98,6 +100,36 @@ void WidgetHeightMap::setBrushStrength(double strength)
     updateGL();
 }
 
+QString WidgetHeightMap::getMemoryStats()
+{
+    qint64 memused = _memory_stats;
+    if (memused >= 1024)
+    {
+        memused /= 1024;
+        if (memused >= 1024)
+        {
+            memused /= 1024;
+            if (memused >= 1024)
+            {
+                memused /= 1024;
+                return tr("%1 GB").arg(memused);
+            }
+            else
+            {
+                return tr("%1 MB").arg(memused);
+            }
+        }
+        else
+        {
+            return tr("%1 kB").arg(memused);
+        }
+    }
+    else
+    {
+        return tr("%1 B").arg(memused);
+    }
+}
+
 void WidgetHeightMap::revert()
 {
     _dirty = true;
@@ -121,6 +153,7 @@ void WidgetHeightMap::mousePressEvent(QMouseEvent* event)
 void WidgetHeightMap::mouseReleaseEvent(QMouseEvent*)
 {
     _last_brush_action = 0;
+    terrainEndBrushStroke(_terrain->height_map);
 }
 
 void WidgetHeightMap::mouseMoveEvent(QMouseEvent* event)
@@ -244,6 +277,7 @@ void WidgetHeightMap::paintGL()
     if (_dirty)
     {
         updateVertexInfo();
+        emit heightmapChanged();
         _dirty = false;
     }
 
@@ -359,6 +393,8 @@ void WidgetHeightMap::updateVertexInfo()
     _vertices = new _VertexInfo[rx * rz];
     delete[] old_vertices;
 
+    _memory_stats = terrainGetMemoryStats(_terrain);
+
     // Update positions
     for (int x = 0; x < rx; x++)
     {

gui_qt/widgetheightmap.h

@@ -33,9 +33,14 @@ public:
     void setBrushSmoothing(double smoothing);
     void setBrushStrength(double smoothing);
 
+    QString getMemoryStats();
+
 public slots:
     void revert();
 
+signals:
+    void heightmapChanged();
+
 protected:
     void mousePressEvent(QMouseEvent* event);
     void mouseReleaseEvent(QMouseEvent* event);
@@ -56,6 +61,7 @@ private:
     _VertexInfo* _vertices;
 
     bool _dirty;
+    qint64 _memory_stats;
 
     double _average_frame_time;
 

lib_paysages/atmosphere/bruneton.c

@@ -26,7 +26,7 @@ static const double exposure = 0.4;
 static const double ISun = 100.0;
 static const double AVERAGE_GROUND_REFLECTANCE = 0.1;
 
-#if 1
+#if 0
 #define RES_MU 128
 #define RES_MU_S 32
 #define RES_R 32

lib_paysages/atmosphere/main.c

@@ -144,33 +144,32 @@ static Color _getSkyColor(Renderer* renderer, Vector3 direction)
     }
 
     /* Get sun shape */
-    double sun_radius = definition->sun_radius * SUN_RADIUS_SCALED;
-    Vector3 hit1, hit2;
-    int hits = euclidRayIntersectSphere(camera_location, direction, sun_position, sun_radius, &hit1, &hit2);
-    if (hits > 1)
+    if (v3Dot(sun_direction, direction) >= 0)
     {
-        double dist = v3Norm(v3Sub(hit2, hit1)) / sun_radius; /* distance between intersection points (relative to radius) */
-
-        sun_color = definition->sun_color;
-        sun_color.r *= 100.0;
-        sun_color.g *= 100.0;
-        sun_color.b *= 100.0;
-
-        if (dist > 0.05)
+        double sun_radius = definition->sun_radius * SUN_RADIUS_SCALED * 5.0; /* FIXME Why should we multiply by 5 ? */
+        Vector3 hit1, hit2;
+        int hits = euclidRayIntersectSphere(camera_location, direction, sun_position, sun_radius, &hit1, &hit2);
+        if (hits > 1)
         {
-            return sun_color;
-        }
-        else
-        {
-            sun_color.a = 1.0 - dist / 0.05;
-            colorMask(&sky_color, &sun_color);
-            return sky_color;
+            double dist = v3Norm(v3Sub(hit2, hit1)) / sun_radius; /* distance between intersection points (relative to radius) */
+
+            sun_color = definition->sun_color;
+            sun_color.r *= 100.0;
+            sun_color.g *= 100.0;
+            sun_color.b *= 100.0;
+
+            if (dist > 0.05)
+            {
+                return sun_color;
+            }
+            else
+            {
+                sun_color.a = 1.0 - dist / 0.05;
+                colorMask(&sky_color, &sun_color);
+            }
         }
     }
-    else
-    {
-        return sky_color;
-    }
+    return sky_color;
 }
 
 static Vector3 _getSunDirection(Renderer* renderer)

lib_paysages/clouds/preview.c

@@ -36,7 +36,7 @@ Color cloudsGetPreviewCoverage(Renderer* renderer, double x, double y, double sc
         eye.y = scaling;
         eye.z = -10.0 * scaling;
         look.x = x * 0.01 / scaling;
-        look.y = -y * 0.01 / scaling - 0.3;
+        look.y = -(y * 0.01 - 0.3) / scaling;
         look.z = 1.0;
         look = v3Normalize(look);
 

lib_paysages/clouds/tools.c

@@ -289,6 +289,8 @@ Color cloudsApplyLayer(CloudsLayerDefinition* definition, Color base, Renderer*
         col.a = inside_length / definition->transparencydepth;
     }
 
+    col = renderer->atmosphere->applyAerialPerspective(renderer, start, col);
+
     colorMask(&base, &col);
 
     return base;

lib_paysages/renderer.c

@@ -89,7 +89,7 @@ static Color _applyTextures(Renderer* renderer, Vector3 location, double precisi
     return COLOR_TRANSPARENT;
 }
 
-Color _applyLightingToSurface(Renderer* renderer, Vector3 location, Vector3 normal, SurfaceMaterial* material)
+static Color _applyLightingToSurface(Renderer* renderer, Vector3 location, Vector3 normal, SurfaceMaterial* material)
 {
     LightStatus* light = lightingCreateStatus(renderer->lighting, location, renderer->getCameraLocation(renderer, location));
     renderer->atmosphere->getLightingStatus(renderer, light, normal, 0);
@@ -98,6 +98,13 @@ Color _applyLightingToSurface(Renderer* renderer, Vector3 location, Vector3 norm
     return result;
 }
 
+static Color _applyMediumTraversal(Renderer* renderer, Vector3 location, Color color)
+{
+    color = renderer->atmosphere->applyAerialPerspective(renderer, location, color);
+    color = renderer->clouds->getColor(renderer, color, renderer->getCameraLocation(renderer, location), location);
+    return color;
+}
+
 Renderer* rendererCreate()
 {
     Renderer* result = malloc(sizeof(Renderer));
@@ -128,6 +135,7 @@ Renderer* rendererCreate()
     result->applyTextures = _applyTextures;
 
     result->applyLightingToSurface = _applyLightingToSurface;
+    result->applyMediumTraversal = _applyMediumTraversal;
 
     result->lighting = lightingManagerCreate();
 

lib_paysages/renderer.h

@@ -35,6 +35,7 @@ struct Renderer
 
     /* Shortcuts */
     Color (*applyLightingToSurface)(Renderer* renderer, Vector3 location, Vector3 normal, SurfaceMaterial* material);
+    Color (*applyMediumTraversal)(Renderer* renderer, Vector3 location, Color color);
 
     /* Scenery related */
     RayCastingResult (*rayWalking)(Renderer* renderer, Vector3 location, Vector3 direction, int terrain, int water, int sky, int clouds);

lib_paysages/terrain/main.c

@@ -121,10 +121,7 @@ static Color _getFinalColor(Renderer* renderer, Vector3 location, double precisi
     Color color;
 
     color = renderer->applyTextures(renderer, location, precision);
-
-    /* TODO Factorize this in scenery renderer */
-    color = renderer->atmosphere->applyAerialPerspective(renderer, location, color);
-    color = renderer->clouds->getColor(renderer, color, renderer->getCameraLocation(renderer, location), location);
+    color = renderer->applyMediumTraversal(renderer, location, color);
 
     return color;
 }

lib_paysages/terrain/painting.c

@@ -74,14 +74,16 @@ void terrainHeightmapCopy(TerrainHeightMap* source, TerrainHeightMap* destinatio
 
     for (i = 0; i < destination->fixed_count; i++)
     {
-        TerrainHeightMapChunk* chunk = destination->fixed_data + i;
+        TerrainHeightMapChunk* chunk_source = source->fixed_data + i;
+        TerrainHeightMapChunk* chunk_destination = destination->fixed_data + i;
+        size_t mapsize = sizeof(double) * chunk_source->rect.xsize * chunk_source->rect.zsize;
 
-        chunk->rect = chunk->rect;
-        if (chunk->rect.xsize * chunk->rect.zsize > 0)
+        chunk_destination->rect = chunk_source->rect;
+        if (chunk_source->rect.xsize * chunk_source->rect.zsize > 0)
         {
-            chunk->data = realloc(chunk->data, sizeof(double) * chunk->rect.xsize * chunk->rect.zsize);
+            chunk_destination->data = realloc(chunk_destination->data, mapsize);
+            memcpy(chunk_destination->data, chunk_source->data, mapsize);
         }
-        memcpy(chunk->data, chunk->data, sizeof(double) * chunk->rect.xsize * chunk->rect.zsize);
     }
 
     destination->floating_used = 0;
@@ -219,9 +221,9 @@ static void _prepareBrushStroke(TerrainHeightMap* heightmap, TerrainBrush* brush
             heightmap->floating_data.rect.zsize += gz1 + gz2;
 
             _resetRect(heightmap, 0, new_width - 1, 0, gz1 - 1);
-            _resetRect(heightmap, 0, new_width - 1, new_height - gz2 + 1, new_height - 1);
-            _resetRect(heightmap, 0, gx1 - 1, gz1, new_height - gz2);
-            _resetRect(heightmap, new_width - gx2 + 1, new_width - 1, gz1, new_height - gz2);
+            _resetRect(heightmap, 0, new_width - 1, new_height - gz2, new_height - 1);
+            _resetRect(heightmap, 0, gx1 - 1, gz1, new_height - 1 - gz2);
+            _resetRect(heightmap, new_width - gx2, new_width - 1, gz1, new_height - 1 - gz2);
         }
     }
     else
@@ -244,6 +246,24 @@ static void _prepareBrushStroke(TerrainHeightMap* heightmap, TerrainBrush* brush
     }
 }
 
+size_t terrainGetMemoryStats(TerrainDefinition* definition)
+{
+    TerrainHeightMap* heightmap = definition->height_map;
+    size_t result = 0;
+    int i;
+
+    if (heightmap->floating_used)
+    {
+        result += sizeof(double) * heightmap->floating_data.rect.xsize * heightmap->floating_data.rect.zsize;
+    }
+    for (i = 0; i < heightmap->fixed_count; i++)
+    {
+        result += sizeof(double) * heightmap->fixed_data[i].rect.xsize * heightmap->fixed_data[i].rect.zsize;
+    }
+
+    return result;
+}
+
 void terrainBrushElevation(TerrainHeightMap* heightmap, TerrainBrush* brush, double value)
 {
     _prepareBrushStroke(heightmap, brush);
@@ -263,6 +283,25 @@ void terrainBrushReset(TerrainHeightMap* heightmap, TerrainBrush* brush, double
 {
 }
 
+void terrainEndBrushStroke(TerrainHeightMap* heightmap)
+{
+    /* Commit floating data to fixed */
+    if (heightmap->floating_used)
+    {
+        /* TODO Find overlapping data and merge with them */
+
+        size_t mapsize = sizeof(double) * heightmap->floating_data.rect.xsize * heightmap->floating_data.rect.zsize;
+        heightmap->fixed_data = realloc(heightmap->fixed_data, sizeof(TerrainHeightMapChunk) * (heightmap->fixed_count + 1));
+        heightmap->fixed_data[heightmap->fixed_count].rect = heightmap->floating_data.rect;
+        heightmap->fixed_data[heightmap->fixed_count].data = malloc(mapsize);
+        memcpy(heightmap->fixed_data[heightmap->fixed_count].data, heightmap->floating_data.data, mapsize);
+
+        heightmap->fixed_count++;
+        heightmap->floating_used = 0;
+        heightmap->floating_data.data = realloc(heightmap->floating_data.data, sizeof(double));
+    }
+}
+
 #if 0
 static void _loadFromFilePixel(HeightMap* heightmap, int x, int y, Color col)
 {

lib_paysages/terrain/public.h

@@ -1,6 +1,7 @@
 #ifndef _PAYSAGES_TERRAIN_PUBLIC_H_
 #define _PAYSAGES_TERRAIN_PUBLIC_H_
 
+#include <stdlib.h>
 #include "../shared/types.h"
 #include "../tools/color.h"
 #include "../tools/euclid.h"
@@ -51,6 +52,7 @@ extern StandardRenderer TerrainRendererClass;
 void terrainAutoPreset(TerrainDefinition* definition, TerrainPreset preset);
 void terrainRenderSurface(Renderer* renderer);
 double terrainGetGridHeight(TerrainDefinition* definition, int x, int z, int with_painting);
+size_t terrainGetMemoryStats(TerrainDefinition* definition);
 
 Renderer* terrainCreatePreviewRenderer();
 Color terrainGetPreviewColor(Renderer* renderer, double x, double z, double detail);
@@ -64,10 +66,12 @@ typedef struct
     double total_radius;
 } TerrainBrush;
 
+/* Heightmap manipulation */
 void terrainBrushElevation(TerrainHeightMap* heightmap, TerrainBrush* brush, double value);
 void terrainBrushSmooth(TerrainHeightMap* heightmap, TerrainBrush* brush, double value);
 void terrainBrushAddNoise(TerrainHeightMap* heightmap, TerrainBrush* brush, NoiseGenerator* generator, double value);
 void terrainBrushReset(TerrainHeightMap* heightmap, TerrainBrush* brush, double value);
+void terrainEndBrushStroke(TerrainHeightMap* heightmap);
 
 #ifdef __cplusplus
 }

lib_paysages/water.c

@@ -355,8 +355,7 @@ WaterResult waterGetColorDetail(WaterDefinition* definition, Renderer* renderer,
     _applyFoam(definition, location, normal, detail, &material);
 
     color = renderer->applyLightingToSurface(renderer, location, normal, &material);
-    color = renderer->atmosphere->applyAerialPerspective(renderer, location, color);
-    color = renderer->clouds->getColor(renderer, color, renderer->getCameraLocation(renderer, location), location);
+    color = renderer->applyMediumTraversal(renderer, location, color);
 
     result.base = definition->material.base;
     result.final = color;