Added /atmosphere/sun_radius property

Also added the tool camera mode to focus on the sun while altering its radius

TODO

@@ -5,6 +5,8 @@ Technlology Preview 2 :
 - Add clouds to OpenGL with 3d textures.
 - Fix potential holes in land rendering (OpenGL and software).
 - Fix polygon culling near the camera in low-res renders (automatic tessellation ?).
+- Fix sun size not being consistent between opengl and software
+- Fix tool camera not reverting to previous camera
 
 Technology Preview 3 :
 - Alter aerial perspective using estimation of the amount of light left after cloud layers traversal.

src/definition/AtmosphereDefinition.cpp

@@ -9,6 +9,7 @@ AtmosphereDefinition::AtmosphereDefinition(DefinitionNode* parent):
 {
     daytime = new FloatNode(this, "daytime");
     humidity = new FloatNode(this, "humidity");
+    sun_radius = new FloatNode(this, "sun_radius");
 }
 
 AtmosphereDefinition::~AtmosphereDefinition()
@@ -21,7 +22,6 @@ void AtmosphereDefinition::save(PackStream* stream) const
 
     stream->write((int*)&model);
     sun_color.save(stream);
-    stream->write(&sun_radius);
     stream->write(&dome_lighting);
     stream->write(&moon_radius);
     stream->write(&moon_theta);
@@ -43,7 +43,6 @@ void AtmosphereDefinition::load(PackStream* stream)
 
     stream->read((int*)&model);
     sun_color.load(stream);
-    stream->read(&sun_radius);
     stream->read(&dome_lighting);
     stream->read(&moon_radius);
     stream->read(&moon_theta);
@@ -73,7 +72,6 @@ void AtmosphereDefinition::copy(DefinitionNode* _destination) const
 
     destination->model = model;
     destination->sun_color = sun_color;
-    destination->sun_radius = sun_radius;
     destination->dome_lighting = dome_lighting;
     destination->moon_radius = moon_radius;
     destination->moon_theta = moon_theta;
@@ -117,7 +115,7 @@ void AtmosphereDefinition::applyPreset(AtmospherePreset preset)
     sun_color.g = 0.95;
     sun_color.b = 0.9;
     sun_color.a = 1.0;
-    sun_radius = 1.0;
+    sun_radius->setValue(0.7);
     moon_radius = 1.0;
     moon_theta = 0.3;
     moon_phi = 0.5;
@@ -135,7 +133,6 @@ void AtmosphereDefinition::applyPreset(AtmospherePreset preset)
             setDayTime(17, 45);
             humidity->setValue(0.1);
             dome_lighting = 0.3;
-            sun_radius = 0.03;
             break;
         case ATMOSPHERE_PRESET_HAZY_MORNING:
             setDayTime(8, 30);

src/definition/AtmosphereDefinition.h

@@ -47,6 +47,7 @@ public:
 
     inline FloatNode *propDayTime() const {return daytime;}
     inline FloatNode *propHumidity() const {return humidity;}
+    inline FloatNode *propSunRadius() const {return sun_radius;}
 
     /**
      * Set the daytime from a 0.0-1.0 value.
@@ -68,7 +69,6 @@ public:
     AtmosphereModel model;
 
     Color sun_color;
-    double sun_radius;
     double dome_lighting;
 
     double moon_radius;
@@ -80,6 +80,7 @@ public:
 private:
     FloatNode *humidity;
     FloatNode *daytime;
+    FloatNode *sun_radius;
 };
 
 }

src/interface/modeler/quickapp/AtmosphereModeler.cpp

@@ -9,10 +9,12 @@ AtmosphereModeler::AtmosphereModeler(MainModelerWindow *main)
 {
     prop_daytime = new FloatPropertyBind(main, "atmosphere_daytime", "value", main->getScenery()->getAtmosphere()->propDayTime());
     prop_humidity = new FloatPropertyBind(main, "atmosphere_humidity", "value", main->getScenery()->getAtmosphere()->propHumidity());
+    prop_sun_radius = new FloatPropertyBind(main, "atmosphere_sun_radius", "value", main->getScenery()->getAtmosphere()->propSunRadius());
 }
 
 AtmosphereModeler::~AtmosphereModeler()
 {
     delete prop_daytime;
     delete prop_humidity;
+    delete prop_sun_radius;
 }

src/interface/modeler/quickapp/AtmosphereModeler.h

@@ -15,6 +15,7 @@ public:
 private:
     FloatPropertyBind *prop_daytime;
     FloatPropertyBind *prop_humidity;
+    FloatPropertyBind *prop_sun_radius;
 };
 
 }

src/interface/modeler/quickapp/MainModelerWindow.cpp

@@ -71,9 +71,16 @@ MainModelerWindow::~MainModelerWindow()
 }
 
 QObject *MainModelerWindow::findQmlObject(const QString &objectName)
+{
+    if (objectName == "ui" || objectName == "root")
+    {
+        return rootObject();
+    }
+    else
     {
         return rootObject()->findChild<QObject *>(objectName);
     }
+}
 
 void MainModelerWindow::setQmlProperty(const QString &objectName, const QString &propertyName, const QVariant &value)
 {
@@ -82,6 +89,23 @@ void MainModelerWindow::setQmlProperty(const QString &objectName, const QString
     {
         item->setProperty(propertyName.toLocal8Bit(), value);
     }
+    else
+    {
+        Logs::error() << "QML object not found :" << objectName.toStdString() << std::endl;
+    }
+}
+
+void MainModelerWindow::connectQmlSignal(const QString &objectName, const char *signal, const QObject *receiver, const char *method)
+{
+    QObject *item = findQmlObject(objectName);
+    if (item)
+    {
+        connect(item, signal, receiver, method);
+    }
+    else
+    {
+        Logs::error() << "QML object not found :" << objectName.toStdString() << std::endl;
+    }
 }
 
 QString MainModelerWindow::getState() const

src/interface/modeler/quickapp/MainModelerWindow.h

@@ -17,6 +17,7 @@ public:
 
     QObject *findQmlObject(const QString &objectName);
     void setQmlProperty(const QString &objectName, const QString &propertyName, const QVariant &value);
+    void connectQmlSignal(const QString &objectName, const char *signal, const QObject *receiver, const char *method);
 
     QString getState() const;
     void setState(const QString &stateName);

src/interface/modeler/quickapp/ModelerCameras.cpp

@@ -4,6 +4,9 @@
 #include "OpenGLRenderer.h"
 #include "Scenery.h"
 #include "CameraDefinition.h"
+#include "AtmosphereDefinition.h"
+#include "FloatNode.h"
+#include "AtmosphereRenderer.h"
 
 ModelerCameras::ModelerCameras(MainModelerWindow *parent):
     QObject(parent), parent(parent)
@@ -11,11 +14,13 @@ ModelerCameras::ModelerCameras(MainModelerWindow *parent):
     render = new CameraDefinition();
     topdown = new CameraDefinition();
     current = new CameraDefinition();
+    tool = new CameraDefinition();
     active = render;
+    tool_mode = TOOL_NONE;
 
     // Watch GUI choice
-    QObject *widget = parent->findQmlObject("camera_choice");
-    connect(widget, SIGNAL(stateChanged(QString)), this, SLOT(changeActiveCamera(QString)));
+    parent->connectQmlSignal("camera_choice", SIGNAL(stateChanged(QString)), this, SLOT(changeActiveCamera(QString)));
+    parent->connectQmlSignal("ui", SIGNAL(mainToolChanged(QString)), this, SLOT(toolChanged(QString)));
 
     // Validate to apply initial camera to scenery
     validate();
@@ -29,6 +34,7 @@ ModelerCameras::~ModelerCameras()
     delete current;
     delete render;
     delete topdown;
+    delete tool;
 }
 
 void ModelerCameras::processZoom(double value)
@@ -54,6 +60,23 @@ void ModelerCameras::processPanning(double xvalue, double yvalue)
     validate();
 }
 
+void ModelerCameras::startSunTool()
+{
+    tool_mode = TOOL_SUN;
+    current->copy(tool);
+    active = tool;
+
+    parent->getScenery()->getAtmosphere()->propDayTime()->addWatcher(this, true);
+}
+
+void ModelerCameras::endTool()
+{
+    active = render;
+    tool_mode = TOOL_NONE;
+
+    validate();
+}
+
 void ModelerCameras::timerEvent(QTimerEvent *)
 {
     current->transitionToAnother(active, 0.5);
@@ -61,6 +84,15 @@ void ModelerCameras::timerEvent(QTimerEvent *)
     parent->getRenderer()->setCamera(current);
 }
 
+void ModelerCameras::nodeChanged(const DefinitionNode *node, const DefinitionDiff *)
+{
+    if (node->getPath() == "/atmosphere/daytime" && tool_mode == TOOL_SUN)
+    {
+        Vector3 direction = parent->getRenderer()->getAtmosphereRenderer()->getSunDirection();
+        tool->setTarget(tool->getLocation().add(direction));
+    }
+}
+
 void ModelerCameras::validate()
 {
     parent->getScenery()->keepCameraAboveGround(active);
@@ -68,7 +100,8 @@ void ModelerCameras::validate()
     parent->getScenery()->keepCameraAboveGround(current);
     parent->getRenderer()->setCamera(current);
 
-    if (active == render) {
+    if (active == render)
+    {
         parent->getScenery()->setCamera(active);
     }
 }
@@ -92,3 +125,15 @@ void ModelerCameras::changeActiveCamera(const QString &name)
         active = topdown;
     }
 }
+
+void ModelerCameras::toolChanged(const QString &tool)
+{
+    if (tool.isEmpty())
+    {
+        endTool();
+    }
+    else if (tool == "sun")
+    {
+        startSunTool();
+    }
+}

src/interface/modeler/quickapp/ModelerCameras.h

@@ -4,6 +4,7 @@
 #include "modeler_global.h"
 
 #include <QObject>
+#include "DefinitionWatcher.h"
 
 namespace paysages {
 namespace modeler {
@@ -11,7 +12,7 @@ namespace modeler {
 /**
  * Storage for modeler cameras.
  */
-class ModelerCameras: public QObject
+class ModelerCameras: public QObject, public DefinitionWatcher
 {
     Q_OBJECT
 
@@ -34,9 +35,21 @@ public:
      */
     void processPanning(double xvalue, double yvalue);
 
+    /**
+     * Start a sun tool, the camera will follow the sun.
+     */
+    void startSunTool();
+
+    /**
+     * End the tool mode.
+     */
+    void endTool();
+
 protected:
     void timerEvent(QTimerEvent *event);
 
+    virtual void nodeChanged(const DefinitionNode *node, const DefinitionDiff *diff) override;
+
     /**
      * Validate current camera, pushing it to rendered scenery if needed.
      */
@@ -44,6 +57,7 @@ protected:
 
 public slots:
     void changeActiveCamera(const QString &name);
+    void toolChanged(const QString &tool);
 
 private:
     MainModelerWindow *parent;
@@ -51,6 +65,14 @@ private:
     CameraDefinition *current;
     CameraDefinition *render;
     CameraDefinition *topdown;
+    CameraDefinition *tool;
+
+    typedef enum
+    {
+        TOOL_NONE,
+        TOOL_SUN
+    } CameraToolMode;
+    CameraToolMode tool_mode;
 };
 
 }

src/interface/modeler/quickapp/qml/AtmosphereSection.qml

@@ -14,6 +14,12 @@ BaseSection {
             hovertext: qsTr("Change the time of day")
         }
 
+        ToolbarButton {
+            id: tool_sun_radius
+            picture: "images/icon_sun_radius.png"
+            hovertext: qsTr("Radius of the sun")
+        }
+
         ToolbarButton {
             id: tool_humidity
             picture: "images/icon_atmosphere.png"
@@ -34,6 +40,15 @@ BaseSection {
         objectName: "atmosphere_humidity"
     }
 
+    PanelSimpleFloat {
+        id: panel_sun_radius
+        anchors.left: toolbar.right
+        minimumValue: 0
+        maximumValue: 3
+        enabled: false
+        objectName: "atmosphere_sun_radius"
+    }
+
     states: [
         State {
             name: "DayTime"
@@ -43,6 +58,18 @@ BaseSection {
                 enabled: true
             }
         },
+        State {
+            name: "Sun radius"
+            when: tool_sun_radius.checked
+            PropertyChanges {
+                target: panel_sun_radius
+                enabled: true
+            }
+            PropertyChanges {
+                target: section
+                tool: "sun"
+            }
+        },
         State {
             name: "Humidity"
             when: tool_humidity.checked

src/interface/modeler/quickapp/qml/BaseSection.qml

@@ -1,6 +1,8 @@
 import QtQuick 2.0
 
 BaseRectangle {
+    property string tool: ""
+
     anchors.bottom: main_ui.bottom
     height: main_ui.height - primary_toolbar.height
 }

src/interface/modeler/quickapp/qml/app.qrc

@@ -52,5 +52,6 @@
         <file>images/icon_render_medium.png</file>
         <file>images/icon_render_final.png</file>
         <file>images/icon_cancel.png</file>
+        <file>images/icon_sun_radius.png</file>
     </qresource>
 </RCC>

src/interface/modeler/quickapp/qml/main.qml

@@ -5,10 +5,16 @@ OpenGLView {
     id: main_ui
     state: "Loading"
     property string previous_state
+    property var current: null
+    property string tool: (current && current.tool) ? current.tool : ""
+
+    signal mainToolChanged(string tool)
 
     width: 1280
     height: 720
 
+    onToolChanged: mainToolChanged(tool)
+
     Tooltip {
         id: tooltip_widget
 
@@ -194,6 +200,10 @@ OpenGLView {
                 target: water_section
                 enabled: true
             }
+            PropertyChanges {
+                target: main_ui
+                current: water_section
+            }
         },
         State {
             name: "Atmosphere Mode"
@@ -203,6 +213,10 @@ OpenGLView {
                 target: atmosphere_section
                 enabled: true
             }
+            PropertyChanges {
+                target: main_ui
+                current: atmosphere_section
+            }
         },
         State {
             name: "Render Mode"

src/render/opengl/OpenGLSkybox.cpp

@@ -54,6 +54,7 @@ void OpenGLSkybox::initialize()
     // Watch for definition changes
     renderer->getScenery()->getAtmosphere()->propDayTime()->addWatcher(this, true);
     renderer->getScenery()->getAtmosphere()->propHumidity()->addWatcher(this, true);
+    renderer->getScenery()->getAtmosphere()->propSunRadius()->addWatcher(this, true);
 }
 
 void OpenGLSkybox::update()
@@ -84,6 +85,10 @@ void OpenGLSkybox::nodeChanged(const DefinitionNode *node, const DefinitionDiff
     {
         renderer->getSharedState()->set("atmosphereHumidity", renderer->getScenery()->getAtmosphere()->propHumidity()->getValue());
     }
+    else if (node->getPath() == "/atmosphere/sun_radius")
+    {
+        renderer->getSharedState()->set("sunRadius", renderer->getScenery()->getAtmosphere()->propSunRadius()->getValue());
+    }
 }
 
 void OpenGLSkybox::setVertex(int i, float x, float y, float z)

src/render/opengl/shaders/atmosphere.frag

@@ -14,8 +14,6 @@ const float SPHERE_SIZE = 20000.0;
 const float WORLD_SCALING = 0.05;
 const float SUN_DISTANCE = 149597870.0;
 const float SUN_DISTANCE_SCALED = (SUN_DISTANCE / WORLD_SCALING);
-const float SUN_RADIUS = 6.955e5;
-const float SUN_RADIUS_SCALED = (SUN_RADIUS / WORLD_SCALING);
 const float M_PI = 3.141592657;
 
 const int RES_MU = 128;
@@ -29,7 +27,7 @@ uniform vec3 cameraLocation;
 uniform vec3 sunDirection;
 uniform vec4 sunColor;
 uniform float dayTime;
-const float sunRadius = 1.0; // TODO -> uniform
+uniform float sunRadius;
 
 varying vec3 unprojected;
 

src/render/software/AtmosphereModelBruneton.cpp

@@ -22,6 +22,7 @@
 #include "Texture2D.h"
 #include "Texture4D.h"
 #include "CacheFile.h"
+#include "FloatNode.h"
 
 /* Factor to convert software units to kilometers */
 // TODO This is copied in AtmosphereRenderer
@@ -29,8 +30,6 @@
 #define WORLD_SCALING 0.05
 #define SUN_DISTANCE 149597870.0
 #define SUN_DISTANCE_SCALED (SUN_DISTANCE / WORLD_SCALING)
-#define SUN_RADIUS 6.955e5
-#define SUN_RADIUS_SCALED (SUN_RADIUS / WORLD_SCALING)
 #define WORKAROUND_OFFSET 0.2
 
 /*********************** Constants ***********************/
@@ -1166,7 +1165,7 @@ AtmosphereResult AtmosphereModelBruneton::getSkyColor(Vector3 eye, const Vector3
 
     AtmosphereResult result;
     Vector3 attenuation;
-    Color sunColor = _sunColor(v, s, r, mu, parent->getScenery()->getAtmosphere()->sun_radius); /* L0 */
+    Color sunColor = _sunColor(v, s, r, mu, parent->getScenery()->getAtmosphere()->propSunRadius()->getValue()); /* L0 */
 
     /*result.base.r = base.r + sunColor.r;
     result.base.g = base.g + sunColor.g;