SoView2DExtension Base class for all View2DExtensions used for drawing and event handling on the View2D. More...
#include <SoView2DExtension.h>
Public Member Functions | |
| SoView2DExtension () | |
| Constructor. | |
| void | init () |
| setup internal state | |
| virtual void | updateValues () |
| Update fields to local variables, may be reimplemented if you want to update additional local vars. | |
| virtual void | draw (View2DSliceList *slicelist, View2DSlice *slice, int sliceZ) |
| Called by the SoView2D for each slice that is rendered. | |
| virtual bool | evalEvent (SoView2D *view2d, View2DSliceList *slicelist, View2DEvent *ec, View2DEventPhase phase) |
| Called by the SoView2D for each event that happens on the viewer. | |
| virtual void | startDrawing (View2DSliceList *) |
| virtual void | endDrawing (View2DSliceList *) |
| View2DEvent * | getEvent () |
| get the current event (when inside of evalEvent) | |
| float | getSelectDist () |
| Set the distance tolerance on hit checking in pixels. | |
| bool | isPointInsideDeviceRect (float pointX, float pointY, float centerX, float centerY, float hitRectangleSize=0.0) |
| returns whether the given point is inside a rectangle around the given center. | |
| virtual void | drawMiniRect (float x, float y) |
| Draws a small rectangle with side length given by selectDist in device coordinates. | |
| virtual void | drawMiniRect (float xp, float yp, float ext) |
| Draws a small rectangle with given side length. | |
| virtual void | drawFilledMiniRect (float xp, float yp, float ext) |
| Draws a small rectangle with given side length. | |
| virtual void | drawMiniCircle (float xp, float yp, float ext) |
| Draws a small rectangle with given side length. | |
| void | drawVoxelBorder (View2DSlice *slice, float vx, float vy, float vz) |
| surround the given voxel with a border | |
| int | getX () |
| get the x device position of current event, only returns valid result when called inside of evalEvent() | |
| int | getY () |
| get the y device position of current event, only returns valid result when called inside of evalEvent() | |
| virtual bool | isDrawingOn () |
| check if drawing is on | |
| virtual bool | isEditingOn () |
| check if editing is on | |
| virtual bool | isFixZOn () |
| check if z should stay fixed | |
| virtual bool | isClipToSlice () |
| check if the image is clipped to slice | |
| virtual void | fieldChanged (SoSensor *sensor) |
| handle if any field has changed | |
| bool | isCreateNewMode () |
| check if extension is in createNewMode | |
| void | setCreateNewMode (bool flag) |
| set this extension to create new objects | |
| bool | isCreateNewModeRequest () |
| check if extension has a request for createNewMode | |
| void | setCreateNewModeRequest (bool flag) |
| set that extension want to become createNewMode | |
| virtual bool | isActive () |
| returns if the extension is active (derive this method in child) (in createNewMode or with a selected object)(called by SoView2D) | |
| virtual void | deleteSelectedObject () |
| deletes the currently active object (derive this method in child) (called by SoView2D) | |
| virtual void | getStatusString (SbString &status) |
| get the current status of this extension | |
| virtual bool | evaluateEvent (SoView2D *view2d, View2DEvent *ec) |
| virtual bool | ignoreEvent (View2DEvent *ec) |
| Return true if ec has been handled before and if ignoreHandledEvents is True. | |
| bool | wantsMouseOverUpdates () const |
| public access to _wantsMouseOverUpdateEvents | |
| virtual void | consumeEvent (View2DEvent *ec, bool handled=TRUE) |
| Set handled-flag of ec to true (= consumed) if handled is True and setEventHandled is True. | |
| int | getSelectedModifierMask () |
| Get compare and ignore mask for the currently selected button/modifier combination, usable with SoPointingAction. | |
| int | getSelectedIgnoreMask () |
| SoPointingAction::Trigger | getPointingActionTriggerFromFields () |
| Get the trigger that matches the button/modifier field state. | |
| virtual bool | implementsManagedInteractionAndClassicEventHandling () const |
| return true if this node is a hybrid module providing managed interaction and classic event handling - in this case SoView2D::useManagedInteraction decides which one to use | |
Static Public Member Functions | |
| static void | initClass () |
| Initializes this class. | |
| static void | fieldChangedCB (void *data, SoSensor *sensor) |
| inventor callbacks if any field has changed, calls fieldChanged | |
| static bool | isImageParallel (SoSFMLImage *image, View2DSliceList *dsl) |
Return true if image is parallel to the image of the slice list up to slice thickness. | |
Public Attributes | |
| SoSFColor | color |
| color that should be used for drawing | |
| SoSFBool | drawingOn |
| flag if the extension should draw, needs to be checked inside of the draw() method | |
| SoSFBool | editingOn |
| flag if the extension should edit objects on mouse events, needs to be checked inside of the evalEvent() method | |
| SoSFBool | maskValid |
| flag if the event mask is valid. | |
| SoSFFloat | selectionTolerance |
| the selection tolerance in pixels | |
| SoSFBool | wantsAllEvents |
| flag if ALL events should be passed to evalEvent(), if disabled, events are only passed to evalEvent when the mouse mask gets valid | |
| SoSFBool | wantsKeyEvents |
| flag if keyboard events should be passed to evalEvent() | |
| SoSFBool | wantsMouseWheelEvents |
| flag if MouseWheel events should be passed to evalEvent() | |
| SoSFBool | setEventHandled |
| Set event handled if it is indeed handled by this extension. | |
| SoSFBool | ignoreHandledEvents |
| Ignore events, that have been handled by previous extensions. | |
| SoSFEnum | button1 |
| mouse mask for button1 | |
| SoSFEnum | button2 |
| mouse mask for button2 | |
| SoSFEnum | button3 |
| mouse mask for button3 | |
| SoSFEnum | shift |
| shift modifier for mouse mask | |
| SoSFEnum | control |
| shift control for mouse mask | |
| SoSFEnum | alt |
| shift alt for mouse mask | |
| SoSFBool | needsValidVoxel |
| sets if a valid voxel must be hit to get evalEvent() calls | |
| SoSFBool | renderOnSlab |
| defines if the extension should be rendered on all slab slices | |
| SoSFBool | createNewMode |
| flag if extension is in createNewMode | |
| SoSFTrigger | createNewModeRequest |
| SoSFBool | clipToSlice |
| Flag to clip drawing to slice. | |
| SoSFEnum | cursorShape |
| Set cursor shape if the mouse mask fits and mouseEvents are effectively sent to evalEvent for editing. | |
| SoSFBool | fixZOn |
| DEPRECATED flag that indicates that the extension should fix the z value, only used in SoView2DRectangle. | |
Protected Member Functions | |
| virtual | ~SoView2DExtension () |
| destructor | |
| virtual void | GLRender (SoGLRenderAction *action) |
| virtual void | callback (SoCallbackAction *action) |
| virtual void | handleEvent (SoHandleEventAction *action) |
| virtual void | getMatrix (SoGetMatrixAction *action) |
| virtual void | getBoundingBox (SoGetBoundingBoxAction *action) |
| virtual void | pick (SoPickAction *action) |
| virtual void | doAction (SoAction *action) |
| virtual void | getPrimitiveCount (SoGetPrimitiveCountAction *action) |
Protected Attributes | |
| SoNodeSensor * | _nodeSensor |
| node sensor that is used to notice field changes | |
| float | _rgbColor [4] |
| Color of the object, update on each field change by _nodeSensor. | |
| bool | _wantsMouseOverUpdateEvents |
| set this flag to receive mouse over events while the extension is active | |
| enum | Sign { ZERO, NEGATIVE, POSITIVE } |
| defines the sign of a number, with zero as an extra value More... | |
| static void | getAxisOrientation (int axis, SbMatrix &matrix, char &negativeResult, char &positiveResult) |
| returns the orientation letter for the negative and positive direction of the given axis axis = 0 - X axis = 1 - Y axis = 2 - Z | |
| static float | pointToLineDistance (SbVec3f point, SbVec3f line1, SbVec3f line2) |
| calculate 3D point to line distance | |
| static float | pointToLineDistance (SbVec2f point, SbVec2f line1, SbVec2f line2) |
| calculate 2D point to line distance | |
| static Sign | edgeIntersectWithPlane (const SbVec3f &v1, const SbVec3f &v2, const SbPlane &plane, SbVec3f &intersect) |
intersect given edge from v1 to v2 with given plane, returns sign and intersect point | |
Detailed Description
SoView2DExtension Base class for all View2DExtensions used for drawing and event handling on the View2D.
Definition at line 189 of file SoView2DExtension.h.
Member Enumeration Documentation
defines the sign of a number, with zero as an extra value
Definition at line 369 of file SoView2DExtension.h.
Constructor & Destructor Documentation
| SoView2DExtension::SoView2DExtension | ( | ) |
Constructor.
| virtual SoView2DExtension::~SoView2DExtension | ( | ) | [protected, virtual] |
destructor
Member Function Documentation
| virtual void SoView2DExtension::callback | ( | SoCallbackAction * | action | ) | [protected, virtual] |
| virtual void SoView2DExtension::consumeEvent | ( | View2DEvent * | ec, |
| bool | handled = TRUE |
||
| ) | [virtual] |
Set handled-flag of ec to true (= consumed) if handled is True and setEventHandled is True.
| virtual void SoView2DExtension::deleteSelectedObject | ( | ) | [virtual] |
deletes the currently active object (derive this method in child) (called by SoView2D)
Reimplemented in SoView2DMarkerEditor.
| virtual void SoView2DExtension::doAction | ( | SoAction * | action | ) | [protected, virtual] |
Reimplemented in SoView2DExtensionSeparator, and SoView2DCSOExtensibleEditor.
| virtual void SoView2DExtension::draw | ( | View2DSliceList * | slicelist, |
| View2DSlice * | slice, | ||
| int | sliceZ | ||
| ) | [virtual] |
Called by the SoView2D for each slice that is rendered.
Implement this method if you want your SoView2DExtension to point on the slices. The sliceZ is the slice that is rendered onto, the slicelist and slice object are passed to access image geometry and render state
Reimplemented in SoView2DAnnotation, SoView2DAutoCenter, SoView2DBorder, SoView2DBorderHighlight, SoView2DDeformationGridView, SoView2DExtensionSeparator, SoView2DLegend, SoView2DMagnifyController, SoView2DMarkerEditor, SoView2DOverlay, SoView2DOverlayDecoration, SoView2DPlane, SoView2DPosition, SoView2DRectangle, SoView2DVectorFieldView, SoView2DVoxelView, SoView2DCallback, SoView2DCSOEditor, and SoView2DCSOExtensibleEditor.
| virtual void SoView2DExtension::drawFilledMiniRect | ( | float | xp, |
| float | yp, | ||
| float | ext | ||
| ) | [virtual] |
Draws a small rectangle with given side length.
| virtual void SoView2DExtension::drawMiniCircle | ( | float | xp, |
| float | yp, | ||
| float | ext | ||
| ) | [virtual] |
Draws a small rectangle with given side length.
| virtual void SoView2DExtension::drawMiniRect | ( | float | x, |
| float | y | ||
| ) | [virtual] |
Draws a small rectangle with side length given by selectDist in device coordinates.
| virtual void SoView2DExtension::drawMiniRect | ( | float | xp, |
| float | yp, | ||
| float | ext | ||
| ) | [virtual] |
Draws a small rectangle with given side length.
| void SoView2DExtension::drawVoxelBorder | ( | View2DSlice * | slice, |
| float | vx, | ||
| float | vy, | ||
| float | vz | ||
| ) |
surround the given voxel with a border
| static Sign SoView2DExtension::edgeIntersectWithPlane | ( | const SbVec3f & | v1, |
| const SbVec3f & | v2, | ||
| const SbPlane & | plane, | ||
| SbVec3f & | intersect | ||
| ) | [static] |
intersect given edge from v1 to v2 with given plane, returns sign and intersect point
| virtual void SoView2DExtension::endDrawing | ( | View2DSliceList * | ) | [inline, virtual] |
this method is called after the slicelist is called and allows some cleenup of precalculated data
Reimplemented in SoView2DExtensionSeparator, and SoView2DOverlay.
Definition at line 291 of file SoView2DExtension.h.
| virtual bool SoView2DExtension::evalEvent | ( | SoView2D * | view2d, |
| View2DSliceList * | slicelist, | ||
| View2DEvent * | ec, | ||
| View2DEventPhase | phase | ||
| ) | [virtual] |
Called by the SoView2D for each event that happens on the viewer.
Implement this method if you want to handle events. If this method is called depends on the fields wantsAllEvents, wantsKeyEvents, wantsMouseWheelEvents and the mouse mask given by button1, button2, button3, shift, control, alt. When using the mouse mask (when wantsAllEvents is set to false), the View2DEventPhase indicates in which phase of the mouse mask you are in.
Reimplemented in SoView2DAnnotation, SoView2DAutoCenter, SoView2DEnlargeOnClick, SoView2DLegend, SoView2DMagnifyController, SoView2DMarkerEditor, SoView2DOverlay, SoView2DPlane, SoView2DPosition, SoView2DRectangle, SoView2DSlicePan, SoView2DSlicer, SoView2DSliceZoom, SoView2DTransRot, SoView2DVoxelValue, SoView2DCallback, and SoView2DCSOEditor.
| virtual bool SoView2DExtension::evaluateEvent | ( | SoView2D * | view2d, |
| View2DEvent * | ec | ||
| ) | [virtual] |
To be called by the application which creates events and which wants to apply them to the extension
Reimplemented in SoView2DExtensionSeparator.
| virtual void SoView2DExtension::fieldChanged | ( | SoSensor * | sensor | ) | [virtual] |
handle if any field has changed
Reimplemented in SoView2DAnnotation, SoView2DLegend, SoView2DInteractionExtension, and SoView2DCSOExtensibleEditor.
| static void SoView2DExtension::fieldChangedCB | ( | void * | data, |
| SoSensor * | sensor | ||
| ) | [static] |
inventor callbacks if any field has changed, calls fieldChanged
| static void SoView2DExtension::getAxisOrientation | ( | int | axis, |
| SbMatrix & | matrix, | ||
| char & | negativeResult, | ||
| char & | positiveResult | ||
| ) | [static] |
returns the orientation letter for the negative and positive direction of the given axis axis = 0 - X axis = 1 - Y axis = 2 - Z
| virtual void SoView2DExtension::getBoundingBox | ( | SoGetBoundingBoxAction * | action | ) | [protected, virtual] |
| View2DEvent* SoView2DExtension::getEvent | ( | ) |
get the current event (when inside of evalEvent)
| virtual void SoView2DExtension::getMatrix | ( | SoGetMatrixAction * | action | ) | [protected, virtual] |
| SoPointingAction::Trigger SoView2DExtension::getPointingActionTriggerFromFields | ( | ) |
Get the trigger that matches the button/modifier field state.
| virtual void SoView2DExtension::getPrimitiveCount | ( | SoGetPrimitiveCountAction * | action | ) | [protected, virtual] |
| float SoView2DExtension::getSelectDist | ( | ) |
Set the distance tolerance on hit checking in pixels.
| int SoView2DExtension::getSelectedIgnoreMask | ( | ) |
| int SoView2DExtension::getSelectedModifierMask | ( | ) |
Get compare and ignore mask for the currently selected button/modifier combination, usable with SoPointingAction.
| virtual void SoView2DExtension::getStatusString | ( | SbString & | status | ) | [virtual] |
get the current status of this extension
| int SoView2DExtension::getX | ( | ) |
get the x device position of current event, only returns valid result when called inside of evalEvent()
| int SoView2DExtension::getY | ( | ) |
get the y device position of current event, only returns valid result when called inside of evalEvent()
| virtual void SoView2DExtension::GLRender | ( | SoGLRenderAction * | action | ) | [protected, virtual] |
Reimplemented in SoView2DOverlay.
| virtual void SoView2DExtension::handleEvent | ( | SoHandleEventAction * | action | ) | [protected, virtual] |
| virtual bool SoView2DExtension::ignoreEvent | ( | View2DEvent * | ec | ) | [virtual] |
Return true if ec has been handled before and if ignoreHandledEvents is True.
Reimplemented in SoView2DMarkerEditor, SoView2DPosition, and SoView2DRectangle.
| virtual bool SoView2DExtension::implementsManagedInteractionAndClassicEventHandling | ( | ) | const [inline, virtual] |
return true if this node is a hybrid module providing managed interaction and classic event handling - in this case SoView2D::useManagedInteraction decides which one to use
Reimplemented in SoView2DAnnotation, SoView2DLegend, and SoView2DInteractionExtension.
Definition at line 408 of file SoView2DExtension.h.
| void SoView2DExtension::init | ( | ) |
setup internal state
| static void SoView2DExtension::initClass | ( | ) | [static] |
Initializes this class.
Reimplemented in SoView2DAnnotation, SoView2DAutoCenter, SoView2DBorder, SoView2DBorderHighlight, SoView2DDeformationGridView, SoView2DEnlargeOnClick, SoView2DExtensionSeparator, SoView2DLegend, SoView2DMagnifyController, SoView2DMarkerEditor, SoView2DOverlay, SoView2DOverlayDecoration, SoView2DPlane, SoView2DPosition, SoView2DRectangle, SoView2DSlicePan, SoView2DSlicer, SoView2DSliceZoom, SoView2DTransRot, SoView2DVectorFieldView, SoView2DVoxelValue, SoView2DVoxelView, SoView2DCallback, SoView2DInteractionExtension, SoView2DCSOEditor, and SoView2DCSOExtensibleEditor.
| virtual bool SoView2DExtension::isActive | ( | ) | [virtual] |
returns if the extension is active (derive this method in child) (in createNewMode or with a selected object)(called by SoView2D)
Reimplemented in SoView2DMarkerEditor.
| virtual bool SoView2DExtension::isClipToSlice | ( | ) | [inline, virtual] |
check if the image is clipped to slice
Definition at line 329 of file SoView2DExtension.h.
| bool SoView2DExtension::isCreateNewMode | ( | ) |
check if extension is in createNewMode
| bool SoView2DExtension::isCreateNewModeRequest | ( | ) |
check if extension has a request for createNewMode
| virtual bool SoView2DExtension::isDrawingOn | ( | ) | [inline, virtual] |
check if drawing is on
Definition at line 323 of file SoView2DExtension.h.
| virtual bool SoView2DExtension::isEditingOn | ( | ) | [inline, virtual] |
check if editing is on
Definition at line 325 of file SoView2DExtension.h.
| virtual bool SoView2DExtension::isFixZOn | ( | ) | [inline, virtual] |
check if z should stay fixed
Definition at line 327 of file SoView2DExtension.h.
| static bool SoView2DExtension::isImageParallel | ( | SoSFMLImage * | image, |
| View2DSliceList * | dsl | ||
| ) | [static] |
Return true if image is parallel to the image of the slice list up to slice thickness.
| bool SoView2DExtension::isPointInsideDeviceRect | ( | float | pointX, |
| float | pointY, | ||
| float | centerX, | ||
| float | centerY, | ||
| float | hitRectangleSize = 0.0 |
||
| ) |
returns whether the given point is inside a rectangle around the given center.
the rectangle's size is defined by getSelectDist if not overwritten by a non-zero hitRectangleSize.
| virtual void SoView2DExtension::pick | ( | SoPickAction * | action | ) | [protected, virtual] |
| static float SoView2DExtension::pointToLineDistance | ( | SbVec2f | point, |
| SbVec2f | line1, | ||
| SbVec2f | line2 | ||
| ) | [static] |
calculate 2D point to line distance
| static float SoView2DExtension::pointToLineDistance | ( | SbVec3f | point, |
| SbVec3f | line1, | ||
| SbVec3f | line2 | ||
| ) | [static] |
calculate 3D point to line distance
| void SoView2DExtension::setCreateNewMode | ( | bool | flag | ) |
set this extension to create new objects
| void SoView2DExtension::setCreateNewModeRequest | ( | bool | flag | ) |
set that extension want to become createNewMode
| virtual void SoView2DExtension::startDrawing | ( | View2DSliceList * | ) | [inline, virtual] |
this method is called before the slicelist is called and allows some precalculation needed for all drawn slices
Reimplemented in SoView2DAutoCenter, SoView2DExtensionSeparator, SoView2DOverlay, SoView2DSliceZoom, and SoView2DCSOExtensibleEditor.
Definition at line 288 of file SoView2DExtension.h.
| virtual void SoView2DExtension::updateValues | ( | ) | [virtual] |
Update fields to local variables, may be reimplemented if you want to update additional local vars.
Reimplemented in SoView2DBorder, SoView2DBorderHighlight, and SoView2DSlicer.
| bool SoView2DExtension::wantsMouseOverUpdates | ( | ) | const [inline] |
public access to _wantsMouseOverUpdateEvents
Definition at line 392 of file SoView2DExtension.h.
Member Data Documentation
SoNodeSensor* SoView2DExtension::_nodeSensor [protected] |
node sensor that is used to notice field changes
Reimplemented in SoView2DExtensionSeparator.
Definition at line 425 of file SoView2DExtension.h.
float SoView2DExtension::_rgbColor[4] [protected] |
Color of the object, update on each field change by _nodeSensor.
Definition at line 428 of file SoView2DExtension.h.
bool SoView2DExtension::_wantsMouseOverUpdateEvents [protected] |
set this flag to receive mouse over events while the extension is active
Definition at line 431 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::alt |
shift alt for mouse mask
Definition at line 233 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::button1 |
mouse mask for button1
Definition at line 223 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::button2 |
mouse mask for button2
Definition at line 225 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::button3 |
mouse mask for button3
Definition at line 227 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::clipToSlice |
Flag to clip drawing to slice.
Definition at line 246 of file SoView2DExtension.h.
| SoSFColor SoView2DExtension::color |
color that should be used for drawing
Definition at line 196 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::control |
shift control for mouse mask
Definition at line 231 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::createNewMode |
flag if extension is in createNewMode
Definition at line 242 of file SoView2DExtension.h.
| SoSFTrigger SoView2DExtension::createNewModeRequest |
Definition at line 243 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::cursorShape |
Set cursor shape if the mouse mask fits and mouseEvents are effectively sent to evalEvent for editing.
Definition at line 250 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::drawingOn |
flag if the extension should draw, needs to be checked inside of the draw() method
Definition at line 198 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::editingOn |
flag if the extension should edit objects on mouse events, needs to be checked inside of the evalEvent() method
Definition at line 200 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::fixZOn |
DEPRECATED flag that indicates that the extension should fix the z value, only used in SoView2DRectangle.
Definition at line 255 of file SoView2DExtension.h.
Ignore events, that have been handled by previous extensions.
Definition at line 219 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::maskValid |
flag if the event mask is valid.
Definition at line 203 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::needsValidVoxel |
sets if a valid voxel must be hit to get evalEvent() calls
Definition at line 236 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::renderOnSlab |
defines if the extension should be rendered on all slab slices
Definition at line 239 of file SoView2DExtension.h.
| SoSFFloat SoView2DExtension::selectionTolerance |
the selection tolerance in pixels
Definition at line 206 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::setEventHandled |
Set event handled if it is indeed handled by this extension.
Definition at line 217 of file SoView2DExtension.h.
| SoSFEnum SoView2DExtension::shift |
shift modifier for mouse mask
Definition at line 229 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::wantsAllEvents |
flag if ALL events should be passed to evalEvent(), if disabled, events are only passed to evalEvent when the mouse mask gets valid
Definition at line 210 of file SoView2DExtension.h.
| SoSFBool SoView2DExtension::wantsKeyEvents |
flag if keyboard events should be passed to evalEvent()
Definition at line 212 of file SoView2DExtension.h.
flag if MouseWheel events should be passed to evalEvent()
Definition at line 214 of file SoView2DExtension.h.
The documentation for this class was generated from the following file:
- MeVisLab/Standard/Sources/Inventor/SoView2D/SoView2DExtension.h
