CS: Add fixed roll setting, plus ortho fix

apps/opencs/model/prefs/state.cpp

@@ -180,6 +180,7 @@ void CSMPrefs::State::declare()
     declareDouble ("navi-free-speed-mult", "Free Camera Speed Multiplier (from Modifier)", 8).setRange(0.001, 1000.0);
     declareDouble ("navi-orbit-rot-speed", "Orbital Camera Rotational Speed", 3.14 / 4).setRange(0.001, 6.28);
     declareDouble ("navi-orbit-speed-mult", "Orbital Camera Speed Multiplier (from Modifier)", 4).setRange(0.001, 1000.0);
+    declareBool ("navi-orbit-const-roll", "Keep camera roll constant for orbital camera", true);
     declareSeparator();
     declareBool ("context-select", "Context Sensitive Selection", false);
     declareDouble ("drag-factor", "Mouse sensitivity during drag operations", 1.0).
@@ -191,7 +192,7 @@ void CSMPrefs::State::declare()
         setTooltip ("Acceleration factor during drag operations while holding down shift").
         setRange (0.001, 100.0);
     declareDouble ("rotate-factor", "Free rotation factor", 0.007).setPrecision(4).setRange(0.0001, 0.1);
-
+    
     declareCategory ("Rendering");
     declareDouble ("camera-fov", "Camera FOV", 90.).setPrecision(5).setRange(10.0, 160.0);
     declareBool ("camera-ortho", "Orthographic projection for camera", false);

apps/opencs/view/render/cameracontroller.cpp

@@ -668,18 +668,25 @@ namespace CSVRender
 
         mInitialized = true;
     }
+    
+    void OrbitCameraController::setConstRoll(bool enabled)
+    {
+        mConstRoll = enabled;
+    }
 
     void OrbitCameraController::rotateHorizontal(double value)
     {
         osg::Vec3d eye, center, up;
         getCamera()->getViewMatrixAsLookAt(eye, center, up);
-        osg::Vec3 absoluteUp = osg::Vec3(0,0,1);
+        osg::Vec3d absoluteUp = osg::Vec3(0,0,1);
 
-        osg::Quat rotation = osg::Quat(value, absoluteUp);
+        osg::Quat rotation = osg::Quat(value, mConstRoll ? absoluteUp : up);
         osg::Vec3d oldOffset = eye - mCenter;
         osg::Vec3d newOffset = rotation * oldOffset;
 
-        up = rotation * up;
+        if (mConstRoll)
+            up = rotation * up;
+
         getCamera()->setViewMatrixAsLookAt(mCenter + newOffset, mCenter, up);
     }
 
@@ -687,16 +694,22 @@ namespace CSVRender
     {
         osg::Vec3d eye, center, up;
         getCamera()->getViewMatrixAsLookAt(eye, center, up);
-        osg::Vec3 absoluteUp = osg::Vec3(0,0,1);
+        osg::Vec3d absoluteUp = osg::Vec3(0,0,1);
 
         osg::Vec3d forward = center - eye;
 
-        osg::Vec3d axis = absoluteUp ^ forward * (up.z() < 0.0 ? -1.0 : 1.0);
+        osg::Vec3d axis = absoluteUp ^ forward;
+
+        if (mConstRoll && up.z() < 0.0)
+            axis *= -1.0;
+
         osg::Quat rotation = osg::Quat(value,axis);
         osg::Vec3d oldOffset = eye - mCenter;
         osg::Vec3d newOffset = rotation * oldOffset;
+            
+        if (mConstRoll)
+            up = rotation * up;
 
-        up = rotation * up;
         getCamera()->setViewMatrixAsLookAt(mCenter + newOffset, mCenter, up);
     }
 

apps/opencs/view/render/cameracontroller.hpp

@@ -160,6 +160,8 @@ namespace CSVRender
             /// \brief Flag controller to be re-initialized.
             void reset();
 
+            void setConstRoll(bool enable);
+
         private:
 
             void initialize();
@@ -181,6 +183,8 @@ namespace CSVRender
             double mOrbitSpeed;
             double mOrbitSpeedMult;
 
+            bool mConstRoll;
+
         private slots:
 
             void naviPrimary(bool active);

apps/opencs/view/render/scenewidget.cpp

@@ -56,6 +56,7 @@ RenderWidget::RenderWidget(QWidget *parent, Qt::WindowFlags f)
     traits->vsync = false;
 
     mView = new osgViewer::View;
+    updateCameraParameters( traits->width / static_cast<double>(traits->height) );
 
     osg::ref_ptr<osgQt::GraphicsWindowQt> window = new osgQt::GraphicsWindowQt(traits.get());
     QLayout* layout = new QHBoxLayout(this);
@@ -67,8 +68,6 @@ RenderWidget::RenderWidget(QWidget *parent, Qt::WindowFlags f)
     mView->getCamera()->setClearColor( osg::Vec4(0.2, 0.2, 0.6, 1.0) );
     mView->getCamera()->setViewport( new osg::Viewport(0, 0, traits->width, traits->height) );
 
-    updateCameraParameters();
-
     SceneUtil::LightManager* lightMgr = new SceneUtil::LightManager;
     lightMgr->setStartLight(1);
     lightMgr->setLightingMask(Mask_Lighting);
@@ -189,6 +188,8 @@ SceneWidget::SceneWidget(std::shared_ptr<Resource::ResourceSystem> resourceSyste
 
     mOrbitCamControl->setPickingMask(Mask_Reference | Mask_Terrain);
 
+    mOrbitCamControl->setConstRoll( CSMPrefs::get()["3D Scene Input"]["navi-orbit-const-roll"].isTrue() );
+
     // we handle lighting manually
     mView->setLightingMode(osgViewer::View::NO_LIGHT);
 
@@ -371,6 +372,10 @@ void SceneWidget::settingChanged (const CSMPrefs::Setting *setting)
     {
         mOrbitCamControl->setOrbitSpeedMultiplier(setting->toDouble());
     }
+    else if (*setting=="3D Scene Input/navi-orbit-const-roll")
+    {
+        mOrbitCamControl->setConstRoll(setting->isTrue());
+    }
     else if (*setting=="Rendering/camera-fov" ||
              *setting=="Rendering/camera-ortho" ||
              *setting=="Rendering/camera-ortho-size")
@@ -379,7 +384,7 @@ void SceneWidget::settingChanged (const CSMPrefs::Setting *setting)
     }
 }
 
-void RenderWidget::updateCameraParameters()
+void RenderWidget::updateCameraParameters(double overrideAspect)
 {
     const float near = 1.0;
     const float far = 1000.0;
@@ -387,8 +392,9 @@ void RenderWidget::updateCameraParameters()
     if (CSMPrefs::get()["Rendering"]["camera-ortho"].isTrue())
     {
         const float size = CSMPrefs::get()["Rendering"]["camera-ortho-size"].toDouble();
-        const float half_w = size / 100.0 * static_cast<double>(width());
-        const float half_h = size / 100.0 * static_cast<double>(height());
+        const float aspect = overrideAspect >= 0.0 ? overrideAspect : (width() / static_cast<double>(height()));
+        const float half_h = size * 10.0;
+        const float half_w = half_h * aspect;
 
         mView->getCamera()->setProjectionMatrixAsOrtho(
             -half_w, half_w, -half_h, half_h, near, far);

apps/opencs/view/render/scenewidget.hpp

@@ -64,7 +64,7 @@ namespace CSVRender
             osg::ref_ptr<osgViewer::View> mView;
             osg::ref_ptr<osg::Group> mRootNode;
 
-            void updateCameraParameters();
+            void updateCameraParameters(double overrideAspect = -1.0);
 
             QTimer mTimer;