[OpenMW-CS] Cube and sphere instance selection

CHANGELOG.md

@@ -94,6 +94,7 @@
     Feature #2386: Distant Statics in the form of Object Paging
     Feature #2404: Levelled List can not be placed into a container
     Feature #2686: Timestamps in openmw.log
+    Feature #3171: OpenMW-CS: Instance drag selection
     Feature #4894: Consider actors as obstacles for pathfinding
     Feature #5043: Head Bobbing
     Feature #5199: Improve Scene Colors

CHANGELOG_PR.md

@@ -21,7 +21,7 @@ New Features:
 - Basics of Collada animations are now supported via osgAnimation plugin (#5456)
 
 New Editor Features:
-- ?
+- Instance selection modes are now implemented (centred cube, corner-dragged cube, sphere) with four user-configurable actions (select only, add to selection, remove from selection, invert selection) (#3171)
 
 Bug Fixes:
 - NiParticleColorModifier in NIF files is now properly handled which solves issues regarding particle effects, e.g., smoke and fire (#1952, #3676)

apps/opencs/model/prefs/state.cpp

@@ -247,6 +247,15 @@ void CSMPrefs::State::declare()
     EnumValues landeditOutsideVisibleCell;
     landeditOutsideVisibleCell.add (showAndLandEdit).add (dontLandEdit);
 
+    EnumValue SelectOnly ("Select only");
+    EnumValue SelectAdd ("Add to selection");
+    EnumValue SelectRemove ("Remove from selection");
+    EnumValue selectInvert ("Invert selection");
+    EnumValues primarySelectAction;
+    primarySelectAction.add (SelectOnly).add (SelectAdd).add (SelectRemove).add (selectInvert);
+    EnumValues secondarySelectAction;
+    secondarySelectAction.add (SelectOnly).add (SelectAdd).add (SelectRemove).add (selectInvert);
+
     declareCategory ("3D Scene Editing");
     declareInt ("distance", "Drop Distance", 50).
         setTooltip ("If an instance drop can not be placed against another object at the "
@@ -276,6 +285,12 @@ void CSMPrefs::State::declare()
     declareBool ("open-list-view", "Open displays list view", false).
         setTooltip ("When opening a reference from the scene view, it will open the"
         " instance list view instead of the individual instance record view.");
+    declareEnum ("primary-select-action", "Action for primary select", SelectOnly).
+        setTooltip("Selection can be chosen between select only, add to selection, remove from selection and invert selection.").
+        addValues (primarySelectAction);
+    declareEnum ("secondary-select-action", "Action for secondary select", SelectAdd).
+        setTooltip("Selection can be chosen between select only, add to selection, remove from selection and invert selection.").
+        addValues (secondarySelectAction);
 
     declareCategory ("Key Bindings");
 

apps/opencs/view/render/cell.cpp

@@ -1,5 +1,7 @@
 #include "cell.hpp"
 
+#include <math.h>
+
 #include <osg/PositionAttitudeTransform>
 #include <osg/Geode>
 #include <osg/Geometry>
@@ -25,6 +27,7 @@
 #include "pathgrid.hpp"
 #include "terrainstorage.hpp"
 #include "object.hpp"
+#include "instancedragmodes.hpp"
 
 namespace CSVRender
 {
@@ -496,6 +499,50 @@ void CSVRender::Cell::selectAllWithSameParentId (int elementMask)
     }
 }
 
+void CSVRender::Cell::handleSelectDrag(Object* object, DragMode dragMode)
+{
+    if (dragMode == DragMode_Select_Only || dragMode == DragMode_Select_Add)
+        object->setSelected(true);
+
+    else if (dragMode == DragMode_Select_Remove)
+        object->setSelected(false);
+
+    else if (dragMode == DragMode_Select_Invert)
+        object->setSelected (!object->getSelected());
+}
+
+void CSVRender::Cell::selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode)
+{
+    for (auto& object : mObjects)
+    {
+        if (dragMode == DragMode_Select_Only) object.second->setSelected (false);
+
+        if ( ( object.second->getPosition().pos[0] > pointA[0] && object.second->getPosition().pos[0] < pointB[0] ) ||
+             ( object.second->getPosition().pos[0] > pointB[0] && object.second->getPosition().pos[0] < pointA[0] ))
+        {
+            if ( ( object.second->getPosition().pos[1] > pointA[1] && object.second->getPosition().pos[1] < pointB[1] ) ||
+                 ( object.second->getPosition().pos[1] > pointB[1] && object.second->getPosition().pos[1] < pointA[1] ))
+            {
+                if ( ( object.second->getPosition().pos[2] > pointA[2] && object.second->getPosition().pos[2] < pointB[2] ) ||
+                     ( object.second->getPosition().pos[2] > pointB[2] && object.second->getPosition().pos[2] < pointA[2] ))
+                    handleSelectDrag(object.second, dragMode);
+            }
+
+        }
+    }
+}
+
+void CSVRender::Cell::selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode)
+{
+    for (auto& object : mObjects)
+    {
+        if (dragMode == DragMode_Select_Only) object.second->setSelected (false);
+
+        float distanceFromObject = (point - object.second->getPosition().asVec3()).length();
+        if (distanceFromObject < distance) handleSelectDrag(object.second, dragMode);
+    }
+}
+
 void CSVRender::Cell::setCellArrows (int mask)
 {
     for (int i=0; i<4; ++i)

apps/opencs/view/render/cell.hpp

@@ -10,6 +10,7 @@
 
 #include "../../model/world/cellcoordinates.hpp"
 #include "terrainstorage.hpp"
+#include "instancedragmodes.hpp"
 
 class QModelIndex;
 
@@ -152,6 +153,12 @@ namespace CSVRender
             // already selected
             void selectAllWithSameParentId (int elementMask);
 
+            void handleSelectDrag(Object* object, DragMode dragMode);
+
+            void selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode);
+
+            void selectWithinDistance(const osg::Vec3d& pointA, float distance, DragMode dragMode);
+
             void setCellArrows (int mask);
 
             /// \brief Set marker for this cell.

apps/opencs/view/render/instancedragmodes.hpp

@@ -0,0 +1,18 @@
+#ifndef CSV_WIDGET_INSTANCEDRAGMODES_H
+#define CSV_WIDGET_INSTANCEDRAGMODES_H
+
+namespace CSVRender
+{
+    enum DragMode
+    {
+        DragMode_None,
+        DragMode_Move,
+        DragMode_Rotate,
+        DragMode_Scale,
+        DragMode_Select_Only,
+        DragMode_Select_Add,
+        DragMode_Select_Remove,
+        DragMode_Select_Invert
+    };
+}
+#endif

apps/opencs/view/render/instancemode.cpp

@@ -96,6 +96,33 @@ osg::Vec3f CSVRender::InstanceMode::getScreenCoords(const osg::Vec3f& pos)
     return pos * combined;
 }
 
+osg::Vec3f CSVRender::InstanceMode::getProjectionSpaceCoords(const osg::Vec3f& pos)
+{
+    osg::Matrix viewMatrix = getWorldspaceWidget().getCamera()->getViewMatrix();
+    osg::Matrix projMatrix = getWorldspaceWidget().getCamera()->getProjectionMatrix();
+    osg::Matrix combined = viewMatrix * projMatrix;
+
+    return pos * combined;
+}
+
+osg::Vec3f CSVRender::InstanceMode::getMousePlaneCoords(const QPoint& point, const osg::Vec3d& dragStart)
+{
+    osg::Matrix viewMatrix;
+    viewMatrix.invert(getWorldspaceWidget().getCamera()->getViewMatrix());
+    osg::Matrix projMatrix;
+    projMatrix.invert(getWorldspaceWidget().getCamera()->getProjectionMatrix());
+    osg::Matrix combined = projMatrix * viewMatrix;
+
+    /* calculate viewport normalized coordinates
+       note: is there a reason to use getCamera()->getViewport()->computeWindowMatrix() instead? */
+    float x = (point.x() * 2) / getWorldspaceWidget().getCamera()->getViewport()->width() - 1.0f;
+    float y = 1.0f - (point.y() * 2) / getWorldspaceWidget().getCamera()->getViewport()->height();
+
+    osg::Vec3f mousePlanePoint = osg::Vec3f(x, y, dragStart.z()) * combined;
+
+    return mousePlanePoint;
+}
+
 CSVRender::InstanceMode::InstanceMode (WorldspaceWidget *worldspaceWidget,  osg::ref_ptr<osg::Group> parentNode,  QWidget *parent)
 : EditMode (worldspaceWidget, QIcon (":scenetoolbar/editing-instance"), Mask_Reference | Mask_Terrain, "Instance editing",
   parent), mSubMode (nullptr), mSubModeId ("move"), mSelectionMode (nullptr), mDragMode (DragMode_None),
@@ -146,7 +173,7 @@ void CSVRender::InstanceMode::activate (CSVWidget::SceneToolbar *toolbar)
     }
 
     if (!mSelectionMode)
-        mSelectionMode = new InstanceSelectionMode (toolbar, getWorldspaceWidget());
+        mSelectionMode = new InstanceSelectionMode (toolbar, getWorldspaceWidget(), mParentNode);
 
     mDragMode = DragMode_None;
 
@@ -322,6 +349,42 @@ bool CSVRender::InstanceMode::secondaryEditStartDrag (const QPoint& pos)
     return false;
 }
 
+bool CSVRender::InstanceMode::primarySelectStartDrag (const QPoint& pos)
+{
+    if (mDragMode!=DragMode_None || mLocked)
+        return false;
+
+    std::string primarySelectAction = CSMPrefs::get()["3D Scene Editing"]["primary-select-action"].toString();
+
+    if ( primarySelectAction == "Select only" ) mDragMode = DragMode_Select_Only;
+    else if ( primarySelectAction == "Add to selection" ) mDragMode = DragMode_Select_Add;
+    else if ( primarySelectAction == "Remove from selection" ) mDragMode = DragMode_Select_Remove;
+    else if ( primarySelectAction == "Invert selection" ) mDragMode = DragMode_Select_Invert;
+
+    WorldspaceHitResult hit = getWorldspaceWidget().mousePick (pos, getWorldspaceWidget().getInteractionMask());
+    mSelectionMode->setDragStart(hit.worldPos);
+
+    return true;
+}
+
+bool CSVRender::InstanceMode::secondarySelectStartDrag (const QPoint& pos)
+{
+    if (mDragMode!=DragMode_None || mLocked)
+        return false;
+
+    std::string secondarySelectAction = CSMPrefs::get()["3D Scene Editing"]["secondary-select-action"].toString();
+
+    if ( secondarySelectAction == "Select only" ) mDragMode = DragMode_Select_Only;
+    else if ( secondarySelectAction == "Add to selection" ) mDragMode = DragMode_Select_Add;
+    else if ( secondarySelectAction == "Remove from selection" ) mDragMode = DragMode_Select_Remove;
+    else if ( secondarySelectAction == "Invert selection" ) mDragMode = DragMode_Select_Invert;
+
+    WorldspaceHitResult hit = getWorldspaceWidget().mousePick (pos, getWorldspaceWidget().getInteractionMask());
+    mSelectionMode->setDragStart(hit.worldPos);
+
+    return true;
+}
+
 void CSVRender::InstanceMode::drag (const QPoint& pos, int diffX, int diffY, double speedFactor)
 {
     osg::Vec3f offset;
@@ -432,6 +495,24 @@ void CSVRender::InstanceMode::drag (const QPoint& pos, int diffX, int diffY, dou
         // Only uniform scaling is currently supported
         offset = osg::Vec3f(scale, scale, scale);
     }
+    else if (mSelectionMode->getCurrentId() == "cube-centre")
+    {
+        osg::Vec3f mousePlanePoint = getMousePlaneCoords(pos, getProjectionSpaceCoords(mSelectionMode->getDragStart()));
+        mSelectionMode->drawSelectionCubeCentre (mousePlanePoint);
+        return;
+    }
+    else if (mSelectionMode->getCurrentId() == "cube-corner")
+    {
+        osg::Vec3f mousePlanePoint = getMousePlaneCoords(pos, getProjectionSpaceCoords(mSelectionMode->getDragStart()));
+        mSelectionMode->drawSelectionCubeCorner (mousePlanePoint);
+        return;
+    }
+    else if (mSelectionMode->getCurrentId() == "sphere")
+    {
+        osg::Vec3f mousePlanePoint = getMousePlaneCoords(pos, getProjectionSpaceCoords(mSelectionMode->getDragStart()));
+        mSelectionMode->drawSelectionSphere (mousePlanePoint);
+        return;
+    }
 
     // Apply
     for (std::vector<osg::ref_ptr<TagBase> >::iterator iter (selection.begin()); iter!=selection.end(); ++iter)
@@ -495,6 +576,22 @@ void CSVRender::InstanceMode::dragCompleted(const QPoint& pos)
         case DragMode_Move: description = "Move Instances"; break;
         case DragMode_Rotate: description = "Rotate Instances"; break;
         case DragMode_Scale: description = "Scale Instances"; break;
+        case DragMode_Select_Only :
+            handleSelectDrag(pos);
+            return;
+            break;
+        case DragMode_Select_Add :
+            handleSelectDrag(pos);
+            return;
+            break;
+        case DragMode_Select_Remove :
+            handleSelectDrag(pos);
+            return;
+            break;
+        case DragMode_Select_Invert :
+            handleSelectDrag(pos);
+            return;
+            break;
 
         case DragMode_None: break;
     }
@@ -680,6 +777,13 @@ void CSVRender::InstanceMode::subModeChanged (const std::string& id)
     getWorldspaceWidget().setSubMode (getSubModeFromId (id), Mask_Reference);
 }
 
+void CSVRender::InstanceMode::handleSelectDrag(const QPoint& pos)
+{
+    osg::Vec3f mousePlanePoint = getMousePlaneCoords(pos, getProjectionSpaceCoords(mSelectionMode->getDragStart()));
+    mSelectionMode->dragEnded (mousePlanePoint, mDragMode);
+    mDragMode = DragMode_None;
+}
+
 void CSVRender::InstanceMode::deleteSelectedInstances(bool active)
 {
     std::vector<osg::ref_ptr<TagBase> > selection = getWorldspaceWidget().getSelection (Mask_Reference);

apps/opencs/view/render/instancemode.hpp

@@ -9,6 +9,7 @@
 #include <osg/Vec3f>
 
 #include "editmode.hpp"
+#include "instancedragmodes.hpp"
 
 namespace CSVWidget
 {
@@ -25,14 +26,6 @@ namespace CSVRender
     {
             Q_OBJECT
 
-            enum DragMode
-            {
-                DragMode_None,
-                DragMode_Move,
-                DragMode_Rotate,
-                DragMode_Scale
-            };
-
             enum DropMode
             {
                 Collision,
@@ -57,6 +50,9 @@ namespace CSVRender
 
             osg::Vec3f getSelectionCenter(const std::vector<osg::ref_ptr<TagBase> >& selection) const;
             osg::Vec3f getScreenCoords(const osg::Vec3f& pos);
+            osg::Vec3f getProjectionSpaceCoords(const osg::Vec3f& pos);
+            osg::Vec3f getMousePlaneCoords(const QPoint& point, const osg::Vec3d& dragStart);
+            void handleSelectDrag(const QPoint& pos);
             void dropInstance(DropMode dropMode, CSVRender::Object* object, float objectHeight);
             float getDropHeight(DropMode dropMode, CSVRender::Object* object, float objectHeight);
 
@@ -84,6 +80,10 @@ namespace CSVRender
 
             bool secondaryEditStartDrag (const QPoint& pos) override;
 
+            bool primarySelectStartDrag(const QPoint& pos) override;
+
+            bool secondarySelectStartDrag(const QPoint& pos) override;
+
             void drag (const QPoint& pos, int diffX, int diffY, double speedFactor) override;
 
             void dragCompleted(const QPoint& pos) override;

apps/opencs/view/render/instanceselectionmode.cpp

@@ -2,17 +2,24 @@
 
 #include <QMenu>
 #include <QAction>
+#include <QPoint>
+
+#include <osg/Group>
+#include <osg/PositionAttitudeTransform>
+#include <osg/ref_ptr>
+#include <osg/Vec3d>
 
 #include "../../model/world/idtable.hpp"
 #include "../../model/world/commands.hpp"
 
+#include "instancedragmodes.hpp"
 #include "worldspacewidget.hpp"
 #include "object.hpp"
 
 namespace CSVRender
 {
-    InstanceSelectionMode::InstanceSelectionMode(CSVWidget::SceneToolbar* parent, WorldspaceWidget& worldspaceWidget)
-        : SelectionMode(parent, worldspaceWidget, Mask_Reference)
+    InstanceSelectionMode::InstanceSelectionMode(CSVWidget::SceneToolbar* parent, WorldspaceWidget& worldspaceWidget, osg::Group *cellNode)
+        : SelectionMode(parent, worldspaceWidget, Mask_Reference), mParentNode(cellNode)
     {
         mSelectSame = new QAction("Extend selection to instances with same object ID", this);
         mDeleteSelection = new QAction("Delete selected instances", this);
@@ -21,6 +28,342 @@ namespace CSVRender
         connect(mDeleteSelection, SIGNAL(triggered()), this, SLOT(deleteSelection()));
     }
 
+    InstanceSelectionMode::~InstanceSelectionMode()
+    {
+        mParentNode->removeChild(mBaseNode);
+    }
+
+    void InstanceSelectionMode::setDragStart(const osg::Vec3d& dragStart)
+    {
+        mDragStart = dragStart;
+    }
+
+    const osg::Vec3d& InstanceSelectionMode::getDragStart()
+    {
+        return mDragStart;
+    }
+
+    void InstanceSelectionMode::dragEnded(const osg::Vec3d& dragEndPoint, DragMode dragMode)
+    {
+        float dragDistance = (mDragStart - dragEndPoint).length();
+        if (mBaseNode) mParentNode->removeChild (mBaseNode);
+        if (getCurrentId() == "cube-centre")
+        {
+            osg::Vec3d pointA(mDragStart[0] - dragDistance, mDragStart[1] - dragDistance, mDragStart[2] - dragDistance);
+            osg::Vec3d pointB(mDragStart[0] + dragDistance, mDragStart[1] + dragDistance, mDragStart[2] + dragDistance);
+            getWorldspaceWidget().selectInsideCube(pointA, pointB, dragMode);
+        }
+        else if (getCurrentId() == "cube-corner")
+        {
+            getWorldspaceWidget().selectInsideCube(mDragStart, dragEndPoint, dragMode);
+        }
+        else if (getCurrentId() == "sphere")
+        {
+            getWorldspaceWidget().selectWithinDistance(mDragStart, dragDistance, dragMode);
+        }
+    }
+
+    void InstanceSelectionMode::drawSelectionCubeCentre(const osg::Vec3f& mousePlanePoint)
+    {
+        float dragDistance = (mDragStart - mousePlanePoint).length();
+        drawSelectionCube(mDragStart, dragDistance);
+    }
+
+    void InstanceSelectionMode::drawSelectionCubeCorner(const osg::Vec3f& mousePlanePoint)
+    {
+        drawSelectionBox(mDragStart, mousePlanePoint);
+    }
+
+    void InstanceSelectionMode::drawSelectionBox(const osg::Vec3d& pointA, const osg::Vec3d& pointB)
+    {
+        if (mBaseNode) mParentNode->removeChild (mBaseNode);
+        mBaseNode = new osg::PositionAttitudeTransform;
+        mBaseNode->setPosition(pointA);
+
+        osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry);
+
+        osg::Vec3Array *vertices = new osg::Vec3Array;
+        vertices->push_back (osg::Vec3f (0.0f, 0.0f, 0.0f));
+        vertices->push_back (osg::Vec3f (0.0f, 0.0f, pointB[2] - pointA[2]));
+        vertices->push_back (osg::Vec3f (0.0f, pointB[1] - pointA[1], 0.0f));
+        vertices->push_back (osg::Vec3f (0.0f, pointB[1] - pointA[1], pointB[2] - pointA[2]));
+
+        vertices->push_back (osg::Vec3f (pointB[0] - pointA[0], 0.0f, 0.0f));
+        vertices->push_back (osg::Vec3f (pointB[0] - pointA[0], 0.0f, pointB[2] - pointA[2]));
+        vertices->push_back (osg::Vec3f (pointB[0] - pointA[0], pointB[1] - pointA[1], 0.0f));
+        vertices->push_back (osg::Vec3f (pointB[0] - pointA[0], pointB[1] - pointA[1], pointB[2] - pointA[2]));
+
+        geometry->setVertexArray (vertices);
+
+        osg::DrawElementsUShort *primitives = new osg::DrawElementsUShort (osg::PrimitiveSet::TRIANGLES, 0);
+
+        // top
+        primitives->push_back (2);
+        primitives->push_back (1);
+        primitives->push_back (0);
+
+        primitives->push_back (3);
+        primitives->push_back (1);
+        primitives->push_back (2);
+
+        // bottom
+        primitives->push_back (4);
+        primitives->push_back (5);
+        primitives->push_back (6);
+
+        primitives->push_back (6);
+        primitives->push_back (5);
+        primitives->push_back (7);
+
+        // sides
+        primitives->push_back (1);
+        primitives->push_back (4);
+        primitives->push_back (0);
+
+        primitives->push_back (4);
+        primitives->push_back (1);
+        primitives->push_back (5);
+
+        primitives->push_back (4);
+        primitives->push_back (2);
+        primitives->push_back (0);
+
+        primitives->push_back (6);
+        primitives->push_back (2);
+        primitives->push_back (4);
+
+        primitives->push_back (6);
+        primitives->push_back (3);
+        primitives->push_back (2);
+
+        primitives->push_back (7);
+        primitives->push_back (3);
+        primitives->push_back (6);
+
+        primitives->push_back (1);
+        primitives->push_back (3);
+        primitives->push_back (5);
+
+        primitives->push_back (5);
+        primitives->push_back (3);
+        primitives->push_back (7);
+
+        geometry->addPrimitiveSet (primitives);
+
+        osg::Vec4Array *colours = new osg::Vec4Array;
+
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.5f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+
+        geometry->setColorArray (colours, osg::Array::BIND_PER_VERTEX);
+
+        geometry->getOrCreateStateSet()->setMode (GL_LIGHTING, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setMode (GL_BLEND, osg::StateAttribute::ON);
+        geometry->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
+
+        mBaseNode->addChild (geometry);
+        mParentNode->addChild(mBaseNode);
+    }
+
+    void InstanceSelectionMode::drawSelectionCube(const osg::Vec3d& point, float radius)
+    {
+        if (mBaseNode) mParentNode->removeChild (mBaseNode);
+        mBaseNode = new osg::PositionAttitudeTransform;
+        mBaseNode->setPosition(point);
+
+        osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry);
+
+        osg::Vec3Array *vertices = new osg::Vec3Array;
+        for (int i = 0; i < 2; ++i)
+        {
+            float height = i ? -radius : radius;
+            vertices->push_back (osg::Vec3f (height, -radius, -radius));
+            vertices->push_back (osg::Vec3f (height, -radius,  radius));
+            vertices->push_back (osg::Vec3f (height,  radius, -radius));
+            vertices->push_back (osg::Vec3f (height,  radius,  radius));
+        }
+
+        geometry->setVertexArray (vertices);
+
+        osg::DrawElementsUShort *primitives = new osg::DrawElementsUShort (osg::PrimitiveSet::TRIANGLES, 0);
+
+        // top
+        primitives->push_back (2);
+        primitives->push_back (1);
+        primitives->push_back (0);
+
+        primitives->push_back (3);
+        primitives->push_back (1);
+        primitives->push_back (2);
+
+        // bottom
+        primitives->push_back (4);
+        primitives->push_back (5);
+        primitives->push_back (6);
+
+        primitives->push_back (6);
+        primitives->push_back (5);
+        primitives->push_back (7);
+
+        // sides
+        primitives->push_back (1);
+        primitives->push_back (4);
+        primitives->push_back (0);
+
+        primitives->push_back (4);
+        primitives->push_back (1);
+        primitives->push_back (5);
+
+        primitives->push_back (4);
+        primitives->push_back (2);
+        primitives->push_back (0);
+
+        primitives->push_back (6);
+        primitives->push_back (2);
+        primitives->push_back (4);
+
+        primitives->push_back (6);
+        primitives->push_back (3);
+        primitives->push_back (2);
+
+        primitives->push_back (7);
+        primitives->push_back (3);
+        primitives->push_back (6);
+
+        primitives->push_back (1);
+        primitives->push_back (3);
+        primitives->push_back (5);
+
+        primitives->push_back (5);
+        primitives->push_back (3);
+        primitives->push_back (7);
+
+        geometry->addPrimitiveSet (primitives);
+
+        osg::Vec4Array *colours = new osg::Vec4Array;
+
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.5f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+        colours->push_back (osg::Vec4f (0.3f, 0.3f, 0.4f, 0.2f));
+        colours->push_back (osg::Vec4f (0.9f, 0.9f, 1.0f, 0.2f));
+
+        geometry->setColorArray (colours, osg::Array::BIND_PER_VERTEX);
+
+        geometry->getOrCreateStateSet()->setMode (GL_LIGHTING, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setMode (GL_BLEND, osg::StateAttribute::ON);
+        geometry->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
+
+        mBaseNode->addChild (geometry);
+        mParentNode->addChild(mBaseNode);
+    }
+
+    void InstanceSelectionMode::drawSelectionSphere(const osg::Vec3f& mousePlanePoint)
+    {
+        float dragDistance = (mDragStart - mousePlanePoint).length();
+        drawSelectionSphere(mDragStart, dragDistance);
+    }
+
+    void InstanceSelectionMode::drawSelectionSphere(const osg::Vec3d& point, float radius)
+    {
+        if (mBaseNode) mParentNode->removeChild (mBaseNode);
+        mBaseNode = new osg::PositionAttitudeTransform;
+        mBaseNode->setPosition(point);
+
+        osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry);
+
+        osg::Vec3Array *vertices = new osg::Vec3Array;
+        int resolution = 32;
+        float radiusPerResolution = radius / resolution;
+        float reciprocalResolution = 1.0f / resolution;
+        float doubleReciprocalRes = reciprocalResolution * 2;
+
+        osg::Vec4Array *colours = new osg::Vec4Array;
+
+        for (float i = 0.0; i <= resolution; i += 2)
+        {
+            float iShifted = (static_cast<float>(i) - resolution / 2.0f); // i - 16 = -16 ... 16
+            float xPercentile = iShifted * doubleReciprocalRes;
+            float x = xPercentile * radius;
+            float thisRadius = sqrt (radius * radius - x * x);
+
+            //the next row
+            float iShifted2 = (static_cast<float>(i + 1) - resolution / 2.0f);
+            float xPercentile2 = iShifted2 * doubleReciprocalRes;
+            float x2 = xPercentile2 * radius;
+            float thisRadius2 = sqrt (radius * radius - x2 * x2);
+
+            for (int j = 0; j < resolution; ++j)
+            {
+                float vertexX = thisRadius * sin(j * reciprocalResolution * osg::PI * 2);
+                float vertexY = i * radiusPerResolution * 2 - radius;
+                float vertexZ = thisRadius * cos(j * reciprocalResolution * osg::PI * 2);
+                float heightPercentage = (vertexZ + radius) / (radius * 2);
+                vertices->push_back (osg::Vec3f (vertexX, vertexY, vertexZ));
+                colours->push_back (osg::Vec4f (heightPercentage, heightPercentage, heightPercentage, 0.3f));
+
+                float vertexNextRowX = thisRadius2 * sin(j * reciprocalResolution * osg::PI * 2);
+                float vertexNextRowY = (i + 1) * radiusPerResolution * 2 - radius;
+                float vertexNextRowZ = thisRadius2 * cos(j * reciprocalResolution * osg::PI * 2);
+                float heightPercentageNextRow = (vertexZ + radius) / (radius * 2);
+                vertices->push_back (osg::Vec3f (vertexNextRowX, vertexNextRowY, vertexNextRowZ));
+                colours->push_back (osg::Vec4f (heightPercentageNextRow, heightPercentageNextRow, heightPercentageNextRow, 0.3f));
+            }
+        }
+
+        geometry->setVertexArray (vertices);
+
+        osg::DrawElementsUShort *primitives = new osg::DrawElementsUShort (osg::PrimitiveSet::TRIANGLE_STRIP, 0);
+
+        for (int i = 0; i < resolution; ++i)
+        {
+            //Even
+            for (int j = 0; j < resolution * 2; ++j)
+            {
+                if (i * resolution * 2 + j > static_cast<int>(vertices->size()) - 1) continue;
+                primitives->push_back (i * resolution * 2 + j);
+            }
+            if (i * resolution * 2 > static_cast<int>(vertices->size()) - 1) continue;
+            primitives->push_back (i * resolution * 2);
+            primitives->push_back (i * resolution * 2 + 1);
+
+            //Odd
+            for (int j = 1; j < resolution * 2 - 2; j += 2)
+            {
+                if ((i + 1) * resolution * 2 + j - 1 > static_cast<int>(vertices->size()) - 1) continue;
+                primitives->push_back ((i + 1) * resolution * 2 + j - 1);
+                primitives->push_back (i * resolution * 2 + j + 2);
+            }
+            if ((i + 2) * resolution * 2 - 2 > static_cast<int>(vertices->size()) - 1) continue;
+            primitives->push_back ((i + 2) * resolution * 2 - 2);
+            primitives->push_back (i * resolution * 2 + 1);
+            primitives->push_back ((i + 1) * resolution * 2);
+        }
+
+        geometry->addPrimitiveSet (primitives);
+
+        geometry->setColorArray (colours, osg::Array::BIND_PER_VERTEX);
+
+        geometry->getOrCreateStateSet()->setMode (GL_LIGHTING, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setMode (GL_BLEND, osg::StateAttribute::ON);
+        geometry->getOrCreateStateSet()->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+        geometry->getOrCreateStateSet()->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
+
+        mBaseNode->addChild (geometry);
+        mParentNode->addChild(mBaseNode);
+    }
+
     bool InstanceSelectionMode::createContextMenu(QMenu* menu)
     {
         if (menu)

apps/opencs/view/render/instanceselectionmode.hpp

@@ -1,7 +1,13 @@
 #ifndef CSV_RENDER_INSTANCE_SELECTION_MODE_H
 #define CSV_RENDER_INSTANCE_SELECTION_MODE_H
 
+#include <QPoint>
+
+#include <osg/PositionAttitudeTransform>
+#include <osg/Vec3d>
+
 #include "selectionmode.hpp"
+#include "instancedragmodes.hpp"
 
 namespace CSVRender
 {
@@ -11,8 +17,25 @@ namespace CSVRender
 
         public:
 
-            InstanceSelectionMode(CSVWidget::SceneToolbar* parent, WorldspaceWidget& worldspaceWidget);
+            InstanceSelectionMode(CSVWidget::SceneToolbar* parent, WorldspaceWidget& worldspaceWidget, osg::Group *cellNode);
+
+            ~InstanceSelectionMode();
+
+            /// Store the worldspace-coordinate when drag begins
+            void setDragStart(const osg::Vec3d& dragStart);
 
+            /// Store the worldspace-coordinate when drag begins
+            const osg::Vec3d& getDragStart();
+
+            /// Store the screen-coordinate when drag begins
+            void setScreenDragStart(const QPoint& dragStartPoint);
+
+            /// Apply instance selection changes
+            void dragEnded(const osg::Vec3d& dragEndPoint, DragMode dragMode);
+
+            void drawSelectionCubeCentre(const osg::Vec3f& mousePlanePoint );
+            void drawSelectionCubeCorner(const osg::Vec3f& mousePlanePoint );
+            void drawSelectionSphere(const osg::Vec3f& mousePlanePoint );
         protected:
 
             /// Add context menu items to \a menu.
@@ -25,8 +48,15 @@ namespace CSVRender
 
         private:
 
+            void drawSelectionBox(const osg::Vec3d& pointA, const osg::Vec3d& pointB);
+            void drawSelectionCube(const osg::Vec3d& point, float radius);
+            void drawSelectionSphere(const osg::Vec3d& point, float radius);
+
             QAction* mDeleteSelection;
             QAction* mSelectSame;
+            osg::Vec3d mDragStart;
+            osg::Group* mParentNode;
+            osg::ref_ptr<osg::PositionAttitudeTransform> mBaseNode;
 
         private slots:
 

apps/opencs/view/render/pagedworldspacewidget.cpp

@@ -768,6 +768,22 @@ void CSVRender::PagedWorldspaceWidget::selectAllWithSameParentId (int elementMas
     flagAsModified();
 }
 
+void CSVRender::PagedWorldspaceWidget::selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode)
+{
+    for (auto& cell : mCells)
+    {
+        cell.second->selectInsideCube (pointA, pointB, dragMode);
+    }
+}
+
+void CSVRender::PagedWorldspaceWidget::selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode)
+{
+    for (auto& cell : mCells)
+    {
+        cell.second->selectWithinDistance (point, distance, dragMode);
+    }
+}
+
 std::string CSVRender::PagedWorldspaceWidget::getCellId (const osg::Vec3f& point) const
 {
     CSMWorld::CellCoordinates cellCoordinates (

apps/opencs/view/render/pagedworldspacewidget.hpp

@@ -7,6 +7,7 @@
 
 #include "worldspacewidget.hpp"
 #include "cell.hpp"
+#include "instancedragmodes.hpp"
 
 namespace CSVWidget
 {
@@ -120,6 +121,10 @@ namespace CSVRender
             /// \param elementMask Elements to be affected by the select operation
             void selectAllWithSameParentId (int elementMask) override;
 
+            void selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode) override;
+
+            void selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode) override;
+
             std::string getCellId (const osg::Vec3f& point) const override;
 
             Cell* getCell(const osg::Vec3d& point) const override;

apps/opencs/view/render/selectionmode.cpp

@@ -15,30 +15,27 @@ namespace CSVRender
     {
         addButton(":scenetoolbar/selection-mode-cube", "cube-centre",
             "Centred cube"
-            "<ul><li>Drag with {scene-select-primary} (make instances the selection) or {scene-select-secondary} "
-                "(invert selection state) from the centre of the selection cube outwards</li>"
+            "<ul><li>Drag with {scene-select-primary} for primary select or {scene-select-secondary} for secondary select "
+                "from the centre of the selection cube outwards.</li>"
             "<li>The selection cube is aligned to the word space axis</li>"
             "<li>If context selection mode is enabled, a drag with {scene-edit-primary} or {scene-edit-secondary} not "
                 "starting on an instance will have the same effect</li>"
-            "</ul>"
-            "<font color=Red>Not implemented yet</font color>");
+            "</ul>");
         addButton(":scenetoolbar/selection-mode-cube-corner", "cube-corner",
             "Cube corner to corner"
-            "<ul><li>Drag with {scene-select-primary} (make instances the selection) or {scene-select-secondary} "
-                "(invert selection state) from one corner of the selection cube to the opposite corner</li>"
+            "<ul><li>Drag with {scene-select-primary} for primary select or {scene-select-secondary} for secondary select "
+                "from one corner of the selection cube to the opposite corner</li>"
             "<li>The selection cube is aligned to the word space axis</li>"
             "<li>If context selection mode is enabled, a drag with {scene-edit-primary} or {scene-edit-secondary} not "
                 "starting on an instance will have the same effect</li>"
-            "</ul>"
-            "<font color=Red>Not implemented yet</font color>");
+            "</ul>");
         addButton(":scenetoolbar/selection-mode-cube-sphere", "sphere",
             "Centred sphere"
-            "<ul><li>Drag with {scene-select-primary} (make instances the selection) or {scene-select-secondary} "
-                "(invert selection state) from the centre of the selection sphere outwards</li>"
+            "<ul><li>Drag with {scene-select-primary} for primary select or {scene-select-secondary} for secondary select  "
+                "from the centre of the selection sphere outwards</li>"
             "<li>If context selection mode is enabled, a drag with {scene-edit-primary} or {scene-edit-secondary} not "
                 "starting on an instance will have the same effect</li>"
-            "</ul>"
-            "<font color=Red>Not implemented yet</font color>");
+            "</ul>");
 
         mSelectAll = new QAction("Select all", this);
         mDeselectAll = new QAction("Clear selection", this);

apps/opencs/view/render/unpagedworldspacewidget.cpp

@@ -140,6 +140,16 @@ void CSVRender::UnpagedWorldspaceWidget::selectAllWithSameParentId (int elementM
     flagAsModified();
 }
 
+void CSVRender::UnpagedWorldspaceWidget::selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode)
+{
+    mCell->selectInsideCube (pointA, pointB, dragMode);
+}
+
+void CSVRender::UnpagedWorldspaceWidget::selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode)
+{
+    mCell->selectWithinDistance (point, distance, dragMode);
+}
+
 std::string CSVRender::UnpagedWorldspaceWidget::getCellId (const osg::Vec3f& point) const
 {
     return mCellId;

apps/opencs/view/render/unpagedworldspacewidget.hpp

@@ -60,6 +60,10 @@ namespace CSVRender
             /// \param elementMask Elements to be affected by the select operation
             void selectAllWithSameParentId (int elementMask) override;
 
+            void selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode) override;
+
+            void selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode) override;
+
             std::string getCellId (const osg::Vec3f& point) const override;
 
             Cell* getCell(const osg::Vec3d& point) const override;

apps/opencs/view/render/worldspacewidget.hpp

@@ -7,6 +7,7 @@
 #include "../../model/doc/document.hpp"
 #include "../../model/world/tablemimedata.hpp"
 
+#include "instancedragmodes.hpp"
 #include "scenewidget.hpp"
 #include "mask.hpp"
 
@@ -160,6 +161,10 @@ namespace CSVRender
             /// \param elementMask Elements to be affected by the select operation
             virtual void selectAllWithSameParentId (int elementMask) = 0;
 
+            virtual void selectInsideCube(const osg::Vec3d& pointA, const osg::Vec3d& pointB, DragMode dragMode) = 0;
+
+            virtual void selectWithinDistance(const osg::Vec3d& point, float distance, DragMode dragMode) = 0;
+
             /// Return the next intersection with scene elements matched by
             /// \a interactionMask based on \a localPos and the camera vector.
             /// If there is no such intersection, instead a point "in front" of \a localPos will be