Preliminary editor camera

apps/opencs/CMakeLists.txt

@@ -89,8 +89,8 @@ opencs_units (view/render
     )
 
 opencs_units_noqt (view/render
-    lighting lightingday lightingnight
-    lightingbright object cell terrainstorage tagbase cellarrow cellmarker cellborder
+    lighting lightingday lightingnight lightingbright object cell terrainstorage tagbase
+    cellarrow cellmarker cellborder cameracontroller
     )
 
 opencs_hdrs_noqt (view/render

apps/opencs/view/render/cameracontroller.cpp

@@ -0,0 +1,458 @@
+#include "cameracontroller.hpp"
+
+#include <QKeyEvent>
+
+#include <osg/Camera>
+#include <osg/Matrixd>
+#include <osg/Quat>
+
+namespace CSVRender
+{
+
+    /*
+    Camera Controller
+    */
+
+    const osg::Vec3d CameraController::LocalUp = osg::Vec3d(0, 1, 0);
+    const osg::Vec3d CameraController::LocalLeft = osg::Vec3d(1, 0, 0);
+    const osg::Vec3d CameraController::LocalForward = osg::Vec3d(0, 0, 1);
+
+    const double CameraController::LinearSpeed = 1000;
+    const double CameraController::RotationalSpeed = osg::PI / 2.f;
+    const double CameraController::SpeedMultiplier = 8;
+
+    CameraController::CameraController()
+        : mActive(false)
+        , mModified(false)
+        , mMouseScalar(-1/350.f)
+        , mCamera(NULL)
+    {
+    }
+
+    CameraController::~CameraController()
+    {
+    }
+
+    bool CameraController::isActive() const
+    {
+        return mActive;
+    }
+
+    bool CameraController::isModified() const
+    {
+        return mModified;
+    }
+
+    osg::Camera* CameraController::getCamera() const
+    {
+        return mCamera;
+    }
+
+    double CameraController::getMouseScalar() const
+    {
+        return mMouseScalar;
+    }
+
+    void CameraController::setCamera(osg::Camera* camera)
+    {
+        mCamera = camera;
+        mActive = (mCamera != NULL);
+
+        if (mActive)
+            onActivate();
+    }
+
+    void CameraController::setMouseScalar(double value)
+    {
+        mMouseScalar = value;
+    }
+
+    void CameraController::setModified()
+    {
+        mModified = true;
+    }
+
+    void CameraController::resetModified()
+    {
+        mModified = false;
+    }
+
+    /*
+    Free Camera Controller
+    */
+
+    FreeCameraController::FreeCameraController()
+        : mLockUpright(false)
+        , mFast(false)
+        , mLeft(false)
+        , mRight(false)
+        , mForward(false)
+        , mBackward(false)
+        , mRollLeft(false)
+        , mRollRight(false)
+        , mUp(LocalUp)
+    {
+    }
+
+    void FreeCameraController::fixUpAxis(const osg::Vec3d& up)
+    {
+        mLockUpright = true;
+        mUp = up;
+    }
+
+    void FreeCameraController::unfixUpAxis()
+    {
+        mLockUpright = false;
+    }
+
+    bool FreeCameraController::handleKeyEvent(QKeyEvent* event, bool pressed)
+    {
+        if (!isActive())
+            return false;
+
+        if (event->key() == Qt::Key_Q)
+        {
+            mRollLeft = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_E)
+        {
+            mRollRight = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_A)
+        {
+            mLeft = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_D)
+        {
+            mRight = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_W)
+        {
+            mForward = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_S)
+        {
+            mBackward = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_Shift)
+        {
+            mFast = pressed;
+            setModified();
+        }
+        else
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    bool FreeCameraController::handleMouseMoveEvent(std::string mode, int x, int y)
+    {
+        if (!isActive())
+            return false;
+
+        if (mode == "p-navi")
+        {
+            yaw(x * getMouseScalar());
+            pitch(y * getMouseScalar());
+            setModified();
+        }
+        else if (mode == "s-navi")
+        {
+            translate(LocalLeft * x + LocalUp * -y);
+            setModified();
+        }
+        else if (mode == "t-navi")
+        {
+            translate(LocalForward * x * (mFast ? SpeedMultiplier : 1));
+        }
+        else
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    void FreeCameraController::update(double dt)
+    {
+        if (!isActive())
+            return;
+
+        double linDist = LinearSpeed * dt;
+        double rotDist = RotationalSpeed * dt;
+
+        if (mFast)
+            linDist *= SpeedMultiplier;
+
+        if (mLeft)
+            translate(LocalLeft * linDist);
+        if (mRight)
+            translate(LocalLeft * -linDist);
+        if (mForward)
+            translate(LocalForward * linDist);
+        if (mBackward)
+            translate(LocalForward * -linDist);
+
+        if (!mLockUpright)
+        {
+            if (mRollLeft)
+                roll(-rotDist);
+            if (mRollRight)
+                roll(rotDist);
+        }
+        else if(isModified())
+        {
+            stabilize();
+        }
+
+        // Normalize the matrix to counter drift
+        getCamera()->getViewMatrix().orthoNormal(getCamera()->getViewMatrix());
+
+        resetModified();
+    }
+
+    void FreeCameraController::yaw(double value)
+    {
+        getCamera()->getViewMatrix() *= osg::Matrixd::rotate(value, LocalUp);
+    }
+
+    void FreeCameraController::pitch(double value)
+    {
+        getCamera()->getViewMatrix() *= osg::Matrixd::rotate(value, LocalLeft);
+    }
+
+    void FreeCameraController::roll(double value)
+    {
+        getCamera()->getViewMatrix() *= osg::Matrixd::rotate(value, LocalForward);
+    }
+
+    void FreeCameraController::translate(const osg::Vec3d& offset)
+    {
+        getCamera()->getViewMatrix() *= osg::Matrixd::translate(offset);
+    }
+
+    void FreeCameraController::stabilize()
+    {
+        osg::Vec3d eye, center, up;
+        getCamera()->getViewMatrixAsLookAt(eye, center, up);
+        getCamera()->setViewMatrixAsLookAt(eye, center, mUp);
+    }
+
+    /*
+    Orbit Camera Controller
+    */
+
+    OrbitCameraController::OrbitCameraController()
+        : mInitialized(false)
+        , mFast(false)
+        , mLeft(false)
+        , mRight(false)
+        , mUp(false)
+        , mDown(false)
+        , mRollLeft(false)
+        , mRollRight(false)
+        , mCenter(0,0,0)
+    {
+    }
+
+    bool OrbitCameraController::handleKeyEvent(QKeyEvent* event, bool pressed)
+    {
+        if (!isActive())
+            return false;
+
+        if (!mInitialized)
+            initialize();
+
+        if (event->key() == Qt::Key_Q)
+        {
+            mRollLeft = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_E)
+        {
+            mRollRight = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_A)
+        {
+            mLeft = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_D)
+        {
+            mRight = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_W)
+        {
+            mUp = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_S)
+        {
+            mDown = pressed;
+            setModified();
+        }
+        else if (event->key() == Qt::Key_Shift)
+        {
+            mFast = pressed;
+            setModified();
+        }
+        else
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    bool OrbitCameraController::handleMouseMoveEvent(std::string mode, int x, int y)
+    {
+        if (!isActive())
+            return false;
+
+        if (!mInitialized)
+            initialize();
+
+        if (mode == "p-navi")
+        {
+            rotateHorizontal(x * getMouseScalar());
+            rotateVertical(y * getMouseScalar());
+            setModified();
+        }
+        else if (mode == "s-navi")
+        {
+            translate(LocalLeft * x + LocalUp * -y);
+            setModified();
+        }
+        else if (mode == "t-navi")
+        {
+            zoom(x * (mFast ? SpeedMultiplier : 1));
+        }
+        else
+        {
+            return false;
+        }
+
+        return true;
+    }
+
+    void OrbitCameraController::update(double dt)
+    {
+        if (!isActive())
+            return;
+
+        if (!mInitialized)
+            initialize();
+
+        double rotDist = RotationalSpeed * dt;
+
+        if (mFast)
+            rotDist *= SpeedMultiplier;
+
+        if (mLeft)
+            rotateHorizontal(-rotDist);
+        if (mRight)
+            rotateHorizontal(rotDist);
+        if (mUp)
+            rotateVertical(rotDist);
+        if (mDown)
+            rotateVertical(-rotDist);
+
+        if (mRollLeft)
+            roll(-rotDist);
+        if (mRollRight)
+            roll(rotDist);
+
+        lookAtCenter();
+
+        // Normalize the matrix to counter drift
+        getCamera()->getViewMatrix().orthoNormal(getCamera()->getViewMatrix());
+
+        resetModified();
+    }
+
+    void OrbitCameraController::onActivate()
+    {
+        mInitialized = false;
+    }
+
+    void OrbitCameraController::initialize()
+    {
+        static const int DefaultStartDistance = 10000.f;
+
+        osg::Quat rotation = getCamera()->getViewMatrix().getRotate();
+        osg::Vec3d position = getCamera()->getViewMatrix().getTrans();
+        osg::Vec3d offset = rotation * (LocalForward * DefaultStartDistance);
+
+        mCenter = position + offset;
+
+        mInitialized = true;
+    }
+
+    void OrbitCameraController::rotateHorizontal(double value)
+    {
+        osg::Vec3d position = getCamera()->getViewMatrix().getTrans();
+        osg::Vec3d offset = position - mCenter;
+        osg::Quat rotation = getCamera()->getViewMatrix().getRotate();
+
+        osg::Quat offsetRotation = osg::Quat(value, LocalUp);
+        osg::Vec3d newOffset = (rotation * offsetRotation) * (rotation.inverse() * offset);
+
+        getCamera()->getViewMatrix().setTrans(mCenter + newOffset);
+    }
+
+    void OrbitCameraController::rotateVertical(double value)
+    {
+        osg::Vec3d position = getCamera()->getViewMatrix().getTrans();
+        osg::Vec3d offset = position - mCenter;
+        osg::Quat rotation = getCamera()->getViewMatrix().getRotate();
+
+        osg::Quat offsetRotation = osg::Quat(value, LocalLeft);
+        osg::Vec3d newOffset = (rotation * offsetRotation) * (rotation.inverse() * offset);
+
+        getCamera()->getViewMatrix().setTrans(mCenter + newOffset);
+    }
+
+    void OrbitCameraController::roll(double value)
+    {
+        getCamera()->getViewMatrix() *= osg::Matrixd::rotate(value, LocalForward);
+    }
+
+    void OrbitCameraController::translate(const osg::Vec3d& offset)
+    {
+        mCenter += offset;
+        getCamera()->getViewMatrix() *= osg::Matrixd::translate(offset);
+    }
+
+    void OrbitCameraController::zoom(double value)
+    {
+        osg::Vec3d dir = mCenter - getCamera()->getViewMatrix().getTrans();
+        double distance = dir.normalize();
+
+        if (distance > 1 || value < 0)
+        {
+            getCamera()->getViewMatrix() *= osg::Matrixd::translate(dir * value);
+        }
+    }
+
+    void OrbitCameraController::lookAtCenter()
+    {
+        osg::Vec3d position = getCamera()->getViewMatrix().getTrans();
+        osg::Vec3d offset = mCenter - position;
+        osg::Quat rotation = getCamera()->getViewMatrix().getRotate();
+
+        osg::Quat newRotation;
+        newRotation.makeRotate(LocalForward, offset);
+
+        getCamera()->getViewMatrix().setRotate(newRotation);
+    }
+}

apps/opencs/view/render/cameracontroller.hpp

@@ -0,0 +1,121 @@
+#ifndef OPENCS_VIEW_CAMERACONTROLLER_H
+#define OPENCS_VIEW_CAMERACONTROLLER_H
+
+#include <string>
+
+#include <osg/ref_ptr>
+#include <osg/Vec3d>
+
+class QKeyEvent;
+
+namespace osg
+{
+    class Camera;
+}
+
+namespace CSVRender
+{
+    class CameraController
+    {
+        public:
+
+            static const osg::Vec3d LocalUp;
+            static const osg::Vec3d LocalLeft;
+            static const osg::Vec3d LocalForward;
+
+            static const double LinearSpeed;
+            static const double RotationalSpeed;
+            static const double SpeedMultiplier;
+
+            CameraController();
+            virtual ~CameraController();
+
+            bool isActive() const;
+            bool isModified() const;
+
+            osg::Camera* getCamera() const;
+            double getMouseScalar() const;
+
+            void setCamera(osg::Camera*);
+            void setMouseScalar(double value);
+
+            virtual bool handleKeyEvent(QKeyEvent* event, bool pressed) = 0;
+            virtual bool handleMouseMoveEvent(std::string mode, int x, int y) = 0;
+
+            virtual void update(double dt) = 0;
+
+        protected:
+
+            void setModified();
+            void resetModified();
+
+            virtual void onActivate(){}
+
+        private:
+
+            bool mActive, mModified;
+            double mMouseScalar;
+
+            osg::Camera* mCamera;
+    };
+
+    class FreeCameraController : public CameraController
+    {
+        public:
+
+            FreeCameraController();
+
+            void fixUpAxis(const osg::Vec3d& up);
+            void unfixUpAxis();
+
+            bool handleKeyEvent(QKeyEvent* event, bool pressed);
+            bool handleMouseMoveEvent(std::string mode, int x, int y);
+
+            void update(double dt);
+
+        private:
+
+            void yaw(double value);
+            void pitch(double value);
+            void roll(double value);
+            void translate(const osg::Vec3d& offset);
+
+            void stabilize();
+
+            bool mLockUpright;
+            bool mFast, mLeft, mRight, mForward, mBackward, mRollLeft, mRollRight;
+            osg::Vec3d mUp;
+    };
+
+    class OrbitCameraController : public CameraController
+    {
+        public:
+
+            OrbitCameraController();
+
+            bool handleKeyEvent(QKeyEvent* event, bool pressed);
+            bool handleMouseMoveEvent(std::string mode, int x, int y);
+
+            void update(double dt);
+
+        private:
+
+            void onActivate();
+
+            void initialize();
+
+            void rotateHorizontal(double value);
+            void rotateVertical(double value);
+            void roll(double value);
+            void translate(const osg::Vec3d& offset);
+            void zoom(double value);
+
+            void lookAtCenter();
+
+            bool mInitialized;
+            bool mFast, mLeft, mRight, mUp, mDown, mRollLeft, mRollRight;
+            osg::Vec3d mCenter;
+    };
+}
+
+#endif

apps/opencs/view/render/scenewidget.cpp

@@ -25,6 +25,7 @@
 
 #include "lighting.hpp"
 #include "mask.hpp"
+#include "cameracontroller.hpp"
 
 namespace CSVRender
 {
@@ -141,8 +142,12 @@ CompositeViewer &CompositeViewer::get()
 
 void CompositeViewer::update()
 {
-    mSimulationTime += mFrameTimer.time_s();
+    double dt = mFrameTimer.time_s();
     mFrameTimer.setStartTick();
+
+    emit simulationUpdated(dt);
+
+    mSimulationTime += dt;
     frame(mSimulationTime);
 }
 
@@ -154,7 +159,14 @@ SceneWidget::SceneWidget(boost::shared_ptr<Resource::ResourceSystem> resourceSys
     , mResourceSystem(resourceSystem)
     , mLighting(NULL)
     , mHasDefaultAmbient(false)
+    , mPrevMouseX(0)
+    , mPrevMouseY(0)
+    , mFreeCamControl(new FreeCameraController())
+    , mOrbitCamControl(new OrbitCameraController())
+    , mCurrentCamControl(mFreeCamControl.get())
 {
+    selectNavigationMode("free");
+
     // we handle lighting manually
     mView->setLightingMode(osgViewer::View::NO_LIGHT);
 
@@ -175,6 +187,8 @@ SceneWidget::SceneWidget(boost::shared_ptr<Resource::ResourceSystem> resourceSys
         CSMPrefs::get()["3D Scene Input"].update();
         CSMPrefs::get()["Tooltips"].update();
     }
+
+    connect (&CompositeViewer::get(), SIGNAL (simulationUpdated(double)), this, SLOT (update(double)));
 }
 
 SceneWidget::~SceneWidget()
@@ -256,28 +270,43 @@ void SceneWidget::setDefaultAmbient (const osg::Vec4f& colour)
 
 void SceneWidget::mousePressEvent (QMouseEvent *event)
 {
-    std::string button = mapButton(event);
+    mMouseMode = mapButton(event);
 
-    // TODO placeholders
-    if (button == "p-navi")
-    {
-    }
-    else if (button == "s-navi")
-    {
-    }
+    mPrevMouseX = event->x();
+    mPrevMouseY = event->y();
 }
 
 void SceneWidget::mouseReleaseEvent (QMouseEvent *event)
 {
-    std::string button = mapButton(event);
+    mMouseMode = "";
+}
 
-    // TODO placeholders
-    if (button == "p-navi")
-    {
-    }
-    else if (button == "s-navi")
-    {
-    }
+void SceneWidget::mouseMoveEvent (QMouseEvent *event)
+{
+    mCurrentCamControl->handleMouseMoveEvent(mMouseMode, event->x() - mPrevMouseX, event->y() - mPrevMouseY);
+
+    mPrevMouseX = event->x();
+    mPrevMouseY = event->y();
+}
+
+void SceneWidget::wheelEvent(QWheelEvent *event)
+{
+    mCurrentCamControl->handleMouseMoveEvent("t-navi", event->delta(), 0);
+}
+
+void SceneWidget::keyPressEvent (QKeyEvent *event)
+{
+    mCurrentCamControl->handleKeyEvent(event, true);
+}
+
+void SceneWidget::keyReleaseEvent (QKeyEvent *event)
+{
+    mCurrentCamControl->handleKeyEvent(event, false);
+}
+
+void SceneWidget::update(double dt)
+{
+    mCurrentCamControl->update(dt);
 }
 
 void SceneWidget::settingChanged (const CSMPrefs::Setting *setting)
@@ -288,13 +317,31 @@ void SceneWidget::settingChanged (const CSMPrefs::Setting *setting)
 void SceneWidget::selectNavigationMode (const std::string& mode)
 {
     if (mode=="1st")
-        mView->setCameraManipulator(new osgGA::FirstPersonManipulator);
+    {
+        mCurrentCamControl->setCamera(NULL);
+        mCurrentCamControl = mFreeCamControl.get();
+        mCurrentCamControl->setCamera(getCamera());
+        mFreeCamControl->fixUpAxis(osg::Vec3d(0,0,1));
+    }
     else if (mode=="free")
-        mView->setCameraManipulator(new osgGA::FirstPersonManipulator);
+    {
+        mCurrentCamControl->setCamera(NULL);
+        mCurrentCamControl = mFreeCamControl.get();
+        mCurrentCamControl->setCamera(getCamera());
+        mFreeCamControl->unfixUpAxis();
+    }
     else if (mode=="orbit")
-        mView->setCameraManipulator(new osgGA::OrbitManipulator);
+    {
+        mCurrentCamControl->setCamera(NULL);
+        mCurrentCamControl = mOrbitCamControl.get();
+        mCurrentCamControl->setCamera(getCamera());
+    }
     else if (mode=="trackball")
-        mView->setCameraManipulator(new osgGA::TrackballManipulator);
+    {
+        mCurrentCamControl->setCamera(NULL);
+        mCurrentCamControl = mOrbitCamControl.get();
+        mCurrentCamControl->setCamera(getCamera());
+    }
 }
 
 bool SceneWidget::storeMappingSetting (const CSMPrefs::Setting *setting)

apps/opencs/view/render/scenewidget.hpp

@@ -2,6 +2,7 @@
 #define OPENCS_VIEW_SCENEWIDGET_H
 
 #include <map>
+#include <memory>
 
 #include <QWidget>
 #include <QTimer>
@@ -39,6 +40,9 @@ namespace CSMPrefs
 
 namespace CSVRender
 {
+    class CameraController;
+    class FreeCameraController;
+    class OrbitCameraController;
     class Lighting;
 
     class RenderWidget : public QWidget
@@ -88,6 +92,10 @@ namespace CSVRender
 
         virtual void mousePressEvent (QMouseEvent *event);
         virtual void mouseReleaseEvent (QMouseEvent *event);
+        virtual void mouseMoveEvent (QMouseEvent *event);
+        virtual void wheelEvent (QWheelEvent *event);
+        virtual void keyPressEvent (QKeyEvent *event);
+        virtual void keyReleaseEvent (QKeyEvent *event);
 
         /// \return Is \a key a button mapping setting? (ignored otherwise)
         virtual bool storeMappingSetting (const CSMPrefs::Setting *setting);
@@ -104,8 +112,17 @@ namespace CSVRender
         LightingNight mLightingNight;
         LightingBright mLightingBright;
 
+        int mPrevMouseX, mPrevMouseY;
+        std::string mMouseMode;
+        std::auto_ptr<FreeCameraController> mFreeCamControl;
+        std::auto_ptr<OrbitCameraController> mOrbitCamControl;
+        CameraController* mCurrentCamControl;
+
         std::map<std::pair<Qt::MouseButton, bool>, std::string> mButtonMapping;
 
+    public slots:
+        void update(double dt);
+
     protected slots:
 
         virtual void settingChanged (const CSMPrefs::Setting *setting);
@@ -139,6 +156,9 @@ namespace CSVRender
 
     public slots:
         void update();
+
+    signals:
+        void simulationUpdated(double dt);
     };
 
 }