Open Inventor Release 2024.1.1
 
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SoQtViewer Class Reference

VSG extension Viewer component lowest base class. More...

#include <Inventor/Qt/viewers/SoQtViewer.h>

+ Inheritance diagram for SoQtViewer:

Public Types

enum  Type {
  BROWSER ,
  EDITOR
}
 Editor types. More...
 
enum  DrawStyle {
  VIEW_AS_IS ,
  VIEW_HIDDEN_LINE ,
  VIEW_NO_TEXTURE ,
  VIEW_LOW_COMPLEXITY ,
  VIEW_LINE ,
  VIEW_POINT ,
  VIEW_BBOX ,
  VIEW_LOW_RES_LINE ,
  VIEW_LOW_RES_POINT ,
  VIEW_SAME_AS_STILL
}
 List of possible drawing styles. More...
 
enum  DrawType {
  STILL ,
  INTERACTIVE
}
 Draw types. More...
 
enum  BufferType {
  BUFFER_SINGLE ,
  BUFFER_DOUBLE ,
  BUFFER_INTERACTIVE
}
 List of different buffering types. More...
 
enum  DecimationStrategy {
  NORMAL ,
  FIXED_NUM_TRIANGLES ,
  FRAMES_PER_SECOND ,
  FIXED_PERCENTAGE
}
 List of decimation strategies. More...
 
enum  CursorStyle {
  CLASSIC ,
  XOR ,
  SHADOW
}
 Curors styles. More...
 
typedef void SoQtViewerCB(void *userData, SoQtViewer *viewer)
 External interactive callback functions registered with the viewer should be of this type.
 
typedef void SoQtViewerCameraTypeChangeCB(void *userData, SoCamera *camera, SoQtViewer *viewer)
 External camera type change callback functions registered with the viewer should be of this type.
 
typedef void SoQtViewerFPSCB(float fps, void *userData, SoQtViewer *viewer)
 External FPS callback functions registered with the viewer should be of this type.
 
typedef void SoQtViewerDecimationPercentageCB(float percentage, void *userData, SoQtViewer *viewer)
 External decimation percentage callback functions registered with the viewer should be of this type.
 
- Public Types inherited from SoQtRenderArea
typedef SbBool SoQtRenderAreaEventCB(void *userData, QEvent *anyevent)
 External event callback functions registered with the render area should be of this type.
 
typedef SbBool SoQtRenderAreaRenderCB(void *userData, SoQtRenderArea *rendArea)
 External post rendering callback functions registered with the render area should be of this type.
 
- Public Types inherited from SoQtGLWidget
enum  FloatColorBufferSize {
  FLOAT_16_COLOR_BUFFER = SoGuiGLWidget::FLOAT_16_COLOR_BUFFER ,
  FLOAT_32_COLOR_BUFFER = SoGuiGLWidget::FLOAT_32_COLOR_BUFFER
}
 FloatColorBufferSize. More...
 
- Public Types inherited from SoQtComponent
typedef void SoQtComponentCB(void *userData, SoQtComponent *comp)
 

Public Member Functions

virtual void setSceneGraph (SoNode *newScene)
 Sets the scene graph to render.
 
virtual SoNodegetSceneGraph ()
 Gets the scene graph to render.
 
virtual void setCamera (SoCamera *cam)
 Sets the edited camera.
 
SoCameragetCamera ()
 Gets the edited camera.
 
virtual void setCameraType (SoType type)
 Sets the camera type that will be created by the viewer if no cameras are found in the scene graph (see SoPerspectiveCamera and SoOrthographicCamera).
 
SoType getCameraType ()
 Gets the camera type that will be created by the viewer if no cameras are found in the scene graph (see SoPerspectiveCamera and SoOrthographicCamera).
 
virtual void setPreserveCameraHeightAngle (SbBool flag)
 If TRUE, an SoPerspectiveCamera's heightAngle is preserved if the camera is changed to an SoOrthographicCamera and then toggled back to an SoPerspectiveCamera.
 
virtual SbBool isCameraHeightAnglePreserved () const
 Query whether the SoPerspectiveCamera's heightAngle is preserved if the camera is changed to an SoOrthographicCamera and then toggled back to an SoPerspectiveCamera.
 
virtual void enableSeekWithOrtho (SbBool flag)
 If FALSE, the seek functionality is disabled for an SoOrthographicCamera.
 
virtual SbBool isSeekWithOrthoEnabled () const
 Query whether the seek functionality is enabled for an SoOrthographicCamera.
 
virtual void viewAll ()
 Changes the camera position to view the entire scene (the camera zoom or orientation isn't changed).
 
virtual void saveHomePosition ()
 Saves the camera values.
 
virtual void resetToHomePosition ()
 Restores the camera values.
 
void setCameraTypeChangeCallback (SoQtViewerCameraTypeChangeCB *callback, void *userdata)
 Defines a callback which is called each time the camera type has changed (change from SoPerspectiveCamera to SoOrthographicCamera or vice versa).
 
virtual void setHeadlight (SbBool onOrOff)
 Turns the headlight on/off (default on).
 
SbBool isHeadlight ()
 Queries if the headlight is on.
 
SoDirectionalLightgetHeadlight ()
 Returns the headlight node.
 
virtual void setDrawStyle (SoQtViewer::DrawType type, SoQtViewer::DrawStyle style)
 Sets the current drawing style in the main view.
 
SoQtViewer::DrawStyle getDrawStyle (SoQtViewer::DrawType type)
 Queries the current drawing style in the main view.
 
virtual void setBufferingType (SoQtViewer::BufferType type)
 Sets the current buffering type in the main view (default SoQtViewer::BUFFER_DOUBLE).
 
SoQtViewer::BufferType getBufferingType ()
 Gets the current buffering type in the main view.
 
virtual void setViewing (SbBool onOrOff)
 Sets whether the viewer is turned on or off.
 
SbBool isViewing () const
 Queries whether the viewer is turned on or off.
 
virtual void setCursorEnabled (SbBool onOrOff)
 Sets whether the viewer is allowed to change the cursor over the renderArea window.
 
SbBool isCursorEnabled () const
 Queries whether the viewer is allowed to change the cursor over the renderArea window.
 
void setAutoClipping (SbBool onOrOff)
 Sets the auto clipping plane.
 
SbBool isAutoClipping () const
 Queries if auto clipping is ON.
 
virtual void setStereoViewing (SbBool onOrOff)
 Turns stereo viewing on/off on the viewer (default off).
 
virtual SbBool isStereoViewing ()
 Queries if stereo viewing is on or off on the viewer.
 
void setStereoOffset (float dist)
 Sets the stereo offset.
 
float getStereoOffset ()
 Returns the stereo offset.
 
void setDetailSeek (SbBool onOrOff)
 When the viewer is in seek mode, left mouse clicks initiate a pick, and the viewer changes its orientation and position to look at the picked object.
 
SbBool isDetailSeek ()
 Queries whether the viewer is in seek mode.
 
void setSeekTime (float seconds)
 Sets the time a seek takes to change to the new camera location.
 
float getSeekTime ()
 Queries the seek time.
 
void addStartCallback (SoQtViewerCB *f, void *userData=NULL)
 Adds start callback routine on the viewer.
 
void addFinishCallback (SoQtViewerCB *f, void *userData=NULL)
 Adds finish callback routines on the viewer.
 
void removeStartCallback (SoQtViewerCB *f, void *userData=NULL)
 Removes start callback routine from the viewer.
 
void removeFinishCallback (SoQtViewerCB *f, void *userData=NULL)
 Removes finish callback routine from the viewer.
 
virtual void recomputeSceneSize ()
 This can be used to let the viewer know that the scene graph has changed so that the viewer can recompute things like speed which depend on the scene graph size.
 
void setDecimationStrategy (SoQtViewer::DecimationStrategy strategy)
 Sets strategy to use to decide on decimation value.
 
SoQtViewer::DecimationStrategy getDecimationStrategy ()
 Gets strategy to use to decide on decimation value.
 
void setGoalNumberOfTriangles (int32_t goal)
 Sets goal number of triangles for the viewer to try to render.
 
int32_t getGoalNumberOfTriangles ()
 Gets goal number of triangles for the viewer to try to render.
 
void setGoalFramesPerSecond (float goal)
 Sets goal frames per second for the viewer to try to render.
 
float getGoalFramesPerSecond ()
 Gets goal frames per second for the viewer to try to render.
 
void setFixedPercentage (float percent)
 Sets fixed percentage for the viewer to render (0.0 to 1.0) Default is 1.0.
 
float getFixedPercentage ()
 Gets fixed percentage for the viewer to render (0.0 to 1.0)
 
void enableFullRenderingWhenStill (SbBool onOff)
 If this flag is set, the viewer will render at full resolution when it sits still for a certain period of time.
 
SbBool isFullRenderingWhenStill ()
 Queries if the viewer will render at full resolution when it sits still for a certain period of time.
 
SbBool isStillNow ()
 Returns whether the viewer is currently still.
 
void setFramesPerSecondCallback (SoQtViewerFPSCB *callback, void *userData=NULL)
 Registers frames per second callback.
 
void setNumSamples (int numFrames)
 Sets how many frames should be timed before frames per second callback is called, default is 10.
 
int getNumSamples ()
 Gets how many frames should be timed before frames per second callback is called.
 
void setDecimationPercentageCallback (SoQtViewerDecimationPercentageCB *callback, void *userData=NULL)
 Registers decimation percentage callback.
 
float getCurrentDecimationPercentage ()
 Returns the Decimation Percentage the viewer used in its last render.
 
virtual SoCameragetViewerCamera ()
 Returns the camera so SoBaseStereo can manipulate it to achieve the stereo effect.
 
virtual SbBool isViewerDoubleBuffer ()
 Returns TRUE if viewer is double buffered.
 
virtual void actualRendering ()
 This method is called automatically when the viewer requests that its SoBaseStereo object perform stereo rendering.
 
virtual const SbVec2sgetSize ()
 Returns the size of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).
 
virtual const SbVec2sgetTopLeft ()
 Returns the position of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).
 
virtual const SbVec2sgetBottomRight ()
 Returns the position of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).
 
void setStereoViewType (SoBaseStereo *stereo)
 Set an implementation of stereo viewing to use.
 
SoBaseStereogetStereoViewType ()
 Returns the current stereo implementation.
 
void reverseStereoView (SbBool reverse)
 If TRUE, reverse the left and right eye views.
 
SbBool isStereoViewReversed ()
 Returns TRUE if the left and right eye views are reversed.
 
virtual void setStereoAbsoluteAdjustments (SbBool absolute)
 If TRUE, use stereo absolute adjustments.
 
virtual SbBool isStereoAbsoluteAdjustments () const
 Returns TRUE if stereo absolute adjustments are enabled.
 
virtual void setStereoBalance (float balance, SbBool nearFrac=false)
 Sets the stereo balance (the position of the zero parallax plane).
 
virtual float getStereoBalance ()
 Returns the current stereo balance.
 
virtual SbBool isStereoBalanceNearFrac ()
 Returns TRUE if the stereo balance adjustement is defined as a fraction of the camera near distance.
 
virtual void setStereoActive (SbBool activate)
 If TRUE, stero is activated.
 
virtual SbBool isStereoActive ()
 Returns TRUE if stereo is active.
 
void setViewport (short left, short bottom, short width, short height)
 Sets viewport region with given origin (lower-left corner) and size, given as pixel coordinates.
 
void getViewport (short &left, short &bottom, short &width, short &height)
 Returns viewport region as origin (lower-left corner) and size, given as pixel coordinates.
 
SoSeparatorgetSceneRoot ()
 Returns the viewer's scene root.
 
virtual void setCursorStyle (SoQtViewer::CursorStyle style)
 Sets the cursor style.
 
SoQtViewer::CursorStyle getCursorStyle ()
 Returns the cursor style.
 
void setAutoClipTolerance (float tolerance)
 Sets the auto clipping tolerance value.
 
float getAutoClipTolerance () const
 Gets the auto clipping tolerance value.
 
virtual void setCameraSceneGraph (SoNode *cameraSceneGraph)
 Sets the sub-scene graph to be used for viewAll computation.
 
SoNodegetCameraSceneGraph ()
 Gets the sub-scene graph to be viewed.
 
void enableMouseWheelDolly (SbBool onOff)
 Enable/disable moving the camera with the mouse wheel, TRUE by default.
 
virtual void setSeekMode (SbBool onOrOff)
 Set the viewer into/out of seek mode (default OFF).
 
SbBool isSeekMode ()
 Returns TRUE if currently in seek mode.
 
virtual void toggleCameraType ()
 This routine will toggle the current camera from perspective to orthographic, and from orthographic back to perspective.
 
void setPickRadius (float radius)
 Sets the pick radius, in pixels, used by the viewer for picking and seeking actions.
 
float getPickRadius () const
 Returns the current pick radius for picking and seeking actions.
 
SbBool getDepthValue (int x, int y, float &depth)
 Returns the depth value, scaled between 0.0 and 1.0, from the depth buffer at window coordinates x, y.
 
Deprecated
virtual SoDEPRECATED void adjustClippingPlanes ()
 Along with the manipulation of the camera, SoBaseStereo needs to set the scene appropriately when changing the camera settings.
 
- Public Member Functions inherited from SoQtRenderArea
 SoQtRenderArea (QWidget *parent=NULL, const char *name=NULL, SbBool buildInsideParent=TRUE, SbBool getMouseInput=TRUE, SbBool getKeyboardInput=TRUE)
 Constructor which is passed arguments which tell it whether to register the mouse and keyboard devices by default (SoQtMouse and SoQtKeyboard).
 
 ~SoQtRenderArea ()
 Destructor.
 
void registerDevice (SoQtDevice *d)
 Registers interest in devices.
 
void unregisterDevice (SoQtDevice *d)
 Unregisters interest in devices.
 
void setBackgroundColor (const SbColor &c)
 Sets the background color for this window.
 
SbColor getBackgroundColor () const
 Gets the background color for this window.
 
void setBackgroundIndex (int index)
 Sets the window background color when in color index mode.
 
int getBackgroundIndex () const
 Gets the window background color when in color index mode.
 
void setColorMap (QGLColormap *cmap)
 Sets the colors to use when displaying in color index mode.
 
void setViewportRegion (const SbViewportRegion &newRegion)
 Sets viewport region to use for rendering.
 
const SbViewportRegiongetViewportRegion () const
 Gets current viewport region to use for rendering.
 
void setTransparencyType (SoGLRenderAction::TransparencyType type)
 Sets the algorithm for rendering transparent objects.
 
SoGLRenderAction::TransparencyType getTransparencyType () const
 Gets the algorithm for rendering transparent objects.
 
void setFastEditSavePolicy (SoGLRenderAction::FastEditSavePolicy policy, SbBool fastEditDelayedObjects=FALSE)
 Sets fast editing save policy to use when rendering.
 
SoGLRenderAction::FastEditSavePolicy getFastEditSavePolicy () const
 Returns fast editing save policy used when rendering.
 
void setInvalidateCacheMode (SoGLRenderAction::InvalidateCacheMode icm)
 Enables or disables the invalidation of render caches.
 
SoGLRenderAction::InvalidateCacheMode getInvalidateCacheMode ()
 Returns the current cache invalidation mode.
 
void setClearBeforeRender (SbBool trueOrFalse, SbBool zbTrueOrFalse=TRUE)
 Enables/prevents window clearing from happening before a rendering starts (default is clear TRUE).
 
SbBool isClearBeforeRender () const
 Queries whether the window will be cleared before rendering starts.
 
SbBool isClearZBufferBeforeRender () const
 Queries whether the depth buffer (sometimes called the Z buffer) will be cleared before rendering starts.
 
void setAutoRedraw (SbBool trueOrFalse)
 The render area will automatically redraw whenever something in the scene graph changes.
 
SbBool isAutoRedraw () const
 Queries whether the render area will automatically redraw whenever something in the scene graph changes.
 
void setRedrawPriority (uint32_t priority)
 Sets the priority of the redraw sensor.
 
uint32_t getRedrawPriority () const
 Gets the priority of the redraw sensor.
 
void render ()
 Calling this forces the render area to be redrawn now.
 
void scheduleRedraw ()
 Schedules a redraw to happen sometime soon (as opposed to immediately).
 
void redrawOnSelectionChange (SoSelection *s)
 Call this convenience method to have this render area redraw whenever the selection list changes in the passed node.
 
void setEventCallback (SoQtRenderAreaEventCB *fcn, void *userData=NULL)
 Windows messages which occur in the render area window are either directly handled by the viewer (when this is really a viewer) or automatically translated to SoEvents, then passed into the scene graph (via the SoHandleEventAction) so that live scene graph objects can handle the message (when viewers are not in viewing mode).
 
void setSceneManager (SoSceneManager *sm)
 Sets the normal scene manager.
 
SoSceneManagergetSceneManager () const
 Gets the normal scene manager.
 
void setGLRenderAction (SoGLRenderAction *ra)
 Sets the GL render action to use.
 
SoGLRenderActiongetGLRenderAction () const
 Gets the current GL render action.
 
const SbGLShareContext getShareContext ()
 Returns the information needed to make OpenGL render contexts share OpenGL objects, for example, display lists and texture objects.
 
void setPostRenderCallback (SoQtRenderAreaRenderCB *fcn, void *userData=NULL)
 Specifies a function to be called after the Open Inventor render traversal and immediately before the OpenGL buffer swap.
 
SoQtRenderAreaRenderCBgetPostRenderCallback (const void *&userData) const
 Gets the post-render callback function and data.
 
void setFloatingColorBuffer (SbBool enable, FloatColorBufferSize size=FLOAT_16_COLOR_BUFFER)
 Enables/disables floating point rendering using 16- or 32-bit components.
 
void getFloatingColorBuffer (SbBool &enable, FloatColorBufferSize &size)
 Returns TRUE if floating point rendering is used and its precision.
 
void sendEvent (QEvent *anEvent)
 Sends the event to be processed by the renderArea.
 
virtual void setMPEGRecorder (SoMPEGRenderer *recorder)
 Sets the recorder used for MPEG encoding.
 
virtual SoMPEGRenderergetMPEGRecorder () const
 Returns the recorder used for MPEG encoding.
 
- Public Member Functions inherited from SoQtGLWidget
int getColorMapSize ()
 Returns the color map size.
 
void setColorMapSize (int size)
 Sets the color map size.
 
virtual WindowQt getNormalWindow ()
 Gets the normal GL window (window system identifier of the widget), which is needed as an argument to glXMakeCurrent() (on Xt) or SbGlContextHelper::makeCurrent() (on Windows) when drawing in the normal planes.
 
QOpenGLContext * getQOpenGLContext ()
 Gets the current context, which is needed as an argument to glXMakeCurrent() (on Xt) or SbGlContextHelper::makeCurrent() (on Windows) when drawing in the normal planes.
 
SoGLContextgetNormalSoContext ()
 Gets the current context, which is needed as an argument to glXMakeCurrent() (on Xt) or SbGlContextHelper::makeCurrent() (on Windows) when drawing in the normal planes.
 
QWidget * getNormalWidget ()
 Gets the current normal widget.
 
QSurfaceFormat getQSurfaceFormat ()
 Returns the QSurfaceFormat currently used.
 
virtual void setNormalVisual (const SoGLFormat &format)
 Sets the visual/pixel format for the normal window.
 
virtual void show ()
 This shows the component.
 
virtual void hide ()
 This hides the component.
 
virtual void setDoubleBuffer (SbBool onOrOff)
 Routine that dynamically changes between single and double buffering.
 
SbBool isDoubleBuffer ()
 Returns whether double buffering is on or off.
 
void setBorder (SbBool onOrOff)
 Included for portability only.
 
int getBorderSize ()
 Included for portability only.
 
SbBool isBorder () const
 Included for portability only.
 
void setDrawToFrontBufferEnable (SbBool enableFlag)
 Sets drawing to the front buffer.
 
SbBool isDrawToFrontBufferEnable () const
 Queries drawing to the front buffer.
 
virtual SbBool bindNormalContext ()
 Makes the normal rendering context the current context.
 
virtual SbBool unbindNormalContext ()
 unbind the current context (previously bind with bindNormalContext );
 
virtual SbBool swapNormalBuffers ()
 Swaps the normal front and back buffers.
 
virtual void setCursor (const QCursor &newCursor)
 Sets the current cursor.
 
QCursor getCursor () const
 Returns the current cursor.
 
void setAntialiasing (const float quality, const SoSceneManager::AntialiasingMode mode=SoSceneManager::AUTO)
 Enable (or disable) antialiasing with specified quality and mode.
 
void setAntialiasing (SoAntialiasingParameters *advancedParameters)
 Enable (or disable) antialiasing with specific parameters.
 
float getAntialiasingQuality () const
 Returns the antialiasing quality set using the setAntialiasing(float,AntialiasingMode) method.
 
SoSceneManager::AntialiasingMode getAntialiasingMode () const
 Returns the antialiasing mode set using the setAntialiasing(float,AntialiasingMode) method.
 
SoAntialiasingParametersgetAntialiasingParameters () const
 Returns the antialiasing parameters set using the setAntialiasing(SoAntialiasingParameters*) method.
 
bool saveSnapshot (const SbString &filename, bool overwrite=true)
 Save a snapshot of the current image displayed in the viewer.
 
- Public Member Functions inherited from SoQtComponent
SbBool isVisible ()
 Returns TRUE if this component is mapped onto the screen.
 
virtual QWidget * getWidget () const
 This returns the base widget handle for this component.
 
SbBool isTopLevelShell () const
 Returns TRUE if this component is a top level shell component (has its own window).
 
QWidget * getShellWidget () const
 Returns the topLevelShell widget handle (NULL if the topLevelShell hasn't been created by this component).
 
QWidget * getParentWidget () const
 Returns the parent widget handle.
 
void setSize (const SbVec2s &size)
 Convenience routine on the widget handle.
 
SbVec2s getSize ()
 Convenience routine on the widget handle.
 
virtual SbBool setFullScreen (const SbBool enable)
 Switches the viewer into (or out of) fullscreen mode.
 
SbBool isFullScreen (void) const
 Queries if the viewer is in fullscreen mode.
 
void setFullScreenEnable (const SbBool enable)
 Enables/disables fullscreen mode.
 
SbBool isFullScreenEnable (void) const
 Queries if it is possible to put the viewer in fullscreen mode.
 
SbGlContextHelper::Display getDisplay ()
 On UNIX, returns the X display associated with this components widget.
 
void setTitle (const char *newTitle)
 Sets window title.
 
void setTitle (const SbString &newTitle)
 Sets window title.
 
void setTitle (const QString &newTitle)
 Sets window title.
 
const QString getTitle () const
 Gets window title.
 
void setIconTitle (const QString &newIconTitle)
 Included for portability only.
 
const QString getIconTitle () const
 Included for portability only.
 
SbString getWidgetName () const
 Returns the widget handle name.
 
SbString getClassName () const
 Returns the class name.
 
void setWindowCloseCallback (SoQtComponentCB *func, void *data=NULL)
 Sets which callback to call when the user closes this component (double click in the upper left corner) - by default hide() is called on this component, unless a callback is set to something other than NULL.
 
- Public Member Functions inherited from SoStereoViewer
virtual ~SoStereoViewer ()
 Destructor.
 

Protected Slots

void processCommonEnterEvents (unsigned int state)
 Process common enter events of the viewer.
 

Additional Inherited Members

- Static Public Member Functions inherited from SoQtRenderArea
static uint32_t getDefaultRedrawPriority ()
 Gets the default priority number of the redraw sensor.
 
static SbBool isFloatingColorBufferSupported ()
 Returns TRUE if floating point rendering is available.
 
- Static Public Member Functions inherited from SoQtComponent
static SoQtComponentgetComponent (QWidget *widget)
 Returns the SoQtComponent for this widget handle.
 
- Public Attributes inherited from SoQtComponent
SbString helpFileName
 Name of help file to open when the viewer Help button is pressed.
 

Detailed Description

VSG extension Viewer component lowest base class.

This is the lowest base class for viewer components. This class adds the notion of a camera to the SoQtRenderArea class. Whenever a new scene is specified with setSceneGraph(), the first camera encountered will be by default used as the edited camera. If no camera is found in the scene, the viewer will automatically create one. If the viewer type is SoQtViewer::BROWSER then the camera is told to view the supplied scene graph but is not added beneath that scene graph root. If the viewer type is SoQtViewer::EDITOR then the camera is added beneath the supplied scene graph root.

In addition to automatically creating a camera if needed, this base class also creates a headlight (directional light which is made to follow the camera), and enables the user to change drawing styles (like wireframe or move wireframe), and buffering types. When the headlight is enabled, a group node is added immediately following the edited camera. This group contains a directional light node.

This base class also provides a convenient way to have the camera near and far clipping planes be automatically adjusted to minimize the clipping of objects in the scene.

Viewers allow the application to shadow event processing. When the application registers an event processing callback by calling setEventCallback() the viewer will invoke this callback for every Q event it receives. However, unlike the render area, the viewer ignores the return value of this callback, and processes the event as usual. This allows the application to expand viewing capabilities without breaking the viewing paradigm. It is an easy way to hook up other devices, like the spaceball, to an existing viewer.

Depending on the DecimationStrategy, a viewer can control the complexity of a scene by adjusting the Decimation elements to reach certain goals. The viewer can attempt to keep a constant frame rate or a constant number of triangles rendered. The viewer can be set to switch to full detail when the scene is not moving.

In order to set the frame rate, the viewer times each render action traversal, and then adjusts the Decimation percentage to keep the time within a range depending on the goal frames per second. To fix the number of triangles, the viewer applies a GetPrimitiveCountAction before each traversal and sets the DecimationPercentage to the desired percentage of the resulting count.

If the DecimationStrategy is NORMAL (the default) then nothing special is done. If the strategy is FIXED_PERCENTAGE, then the same percentage is used for every render. Also note that FIXED_PERCENTAGE sets the DecimationType to be PERCENTAGE (all others use AUTOMATIC), which means that instances of SoLOD will not use the camera position in their calculations, and can therefore be cached.

The application can add callbacks from the viewer to get the current decimation level, the current primitive count and the current frames per second. The decimation level and primitive count callbacks are called every frame. The frames per second callback is called after a certain number of samples have been averaged together.

SEE ALSO

SoQtComponent, SoQtRenderArea, SoQtExaminerViewer, SoQtWalkViewer, SoQtFlyViewer, SoQtPlaneViewer

Definition at line 176 of file SoQtViewer.h.

Member Typedef Documentation

◆ SoQtViewerCameraTypeChangeCB

typedef void SoQtViewerCameraTypeChangeCB(void *userData, SoCamera *camera, SoQtViewer *viewer)

External camera type change callback functions registered with the viewer should be of this type.

Definition at line 80 of file SoQtViewer.h.

◆ SoQtViewerCB

typedef void SoQtViewerCB(void *userData, SoQtViewer *viewer)

External interactive callback functions registered with the viewer should be of this type.

Definition at line 73 of file SoQtViewer.h.

◆ SoQtViewerDecimationPercentageCB

typedef void SoQtViewerDecimationPercentageCB(float percentage, void *userData, SoQtViewer *viewer)

External decimation percentage callback functions registered with the viewer should be of this type.

Definition at line 94 of file SoQtViewer.h.

◆ SoQtViewerFPSCB

typedef void SoQtViewerFPSCB(float fps, void *userData, SoQtViewer *viewer)

External FPS callback functions registered with the viewer should be of this type.

Definition at line 87 of file SoQtViewer.h.

Member Enumeration Documentation

◆ BufferType

List of different buffering types.

Enumerator
BUFFER_SINGLE 

Single buffer.

BUFFER_DOUBLE 

Double buffer.

BUFFER_INTERACTIVE 

Double buffer while interactive viewing.

Definition at line 269 of file SoQtViewer.h.

◆ CursorStyle

Curors styles.

Classic cursors are all white and tend to disappear over white geometry or white background. New styles avoid that problem

Enumerator
CLASSIC 

Standard Open Inventor cursors.

XOR 

Improved cursors using XOR.

SHADOW 

Improved cursors using "shadow".

Definition at line 310 of file SoQtViewer.h.

◆ DecimationStrategy

List of decimation strategies.

Enumerator
NORMAL 

Decimation is not changed.

FIXED_NUM_TRIANGLES 

Try to fix number of triangles drawn.

FRAMES_PER_SECOND 

Try to fix frames per second.

FIXED_PERCENTAGE 

Use given decimation percentage.

Definition at line 286 of file SoQtViewer.h.

◆ DrawStyle

List of possible drawing styles.

Note: Refer to the SoQtViewer man pages for a complete description of those draw styles.

Enumerator
VIEW_AS_IS 

Unchanged.

VIEW_HIDDEN_LINE 

Render only the frontmost lines.

VIEW_NO_TEXTURE 

Render without textures.

VIEW_LOW_COMPLEXITY 

Render low complexity and no texture.

VIEW_LINE 

Wireframe draw style.

VIEW_POINT 

Point draw style.

VIEW_BBOX 

Bounding box draw style.

VIEW_LOW_RES_LINE 

Low complexity wireframe + no depth clearing.

VIEW_LOW_RES_POINT 

Low complexity point + no depth clearing.

VIEW_SAME_AS_STILL 

Forces the INTERACTIVE draw style to match STILL.

Definition at line 211 of file SoQtViewer.h.

◆ DrawType

Draw types.

Enumerator
STILL 

Applies to static rendering.

INTERACTIVE 

Applies to rendering while interactive viewing.

Definition at line 256 of file SoQtViewer.h.

◆ Type

Editor types.

An EDITOR viewer will create a camera under the user supplied scene graph (specified in setSceneGraph()) if it cannot find one in the scene and will leave the camera behind when supplied with a new scene.

A BROWSER viewer will also create a camera if it cannot find one in the scene, but will place it above the scene graph node (camera will not appear in the user supplied scene graph), and will automatically remove it when another scene is supplied to the viewer.

Enumerator
BROWSER 

Camera views scene, but is not added to scene.

EDITOR 

Camera is added to user's scene.

Definition at line 193 of file SoQtViewer.h.

Member Function Documentation

◆ actualRendering()

virtual void SoQtViewer::actualRendering ( )
virtual

This method is called automatically when the viewer requests that its SoBaseStereo object perform stereo rendering.

actualRendering() may then be called twice (once for each eye view) and therefore must not take into account any stereo-specific settings. It should behave as if it were a rendering method for a monoscopic view.

Implements SoStereoViewer.

◆ addFinishCallback()

void SoQtViewer::addFinishCallback ( SoQtViewerCB f,
void *  userData = NULL 
)
inline

Adds finish callback routines on the viewer.

Start callbacks are called whenever the user starts doing interactive viewing (for example, mouse down), and finish callbacks are called when user is done doing interactive work (for example, mouse up).

Note: The viewer "this" pointer is passed as callback data.

Definition at line 653 of file SoQtViewer.h.

◆ addStartCallback()

void SoQtViewer::addStartCallback ( SoQtViewerCB f,
void *  userData = NULL 
)
inline

Adds start callback routine on the viewer.

Start callbacks are called whenever the user starts doing interactive viewing (for example, mouse down), and finish callbacks are called when user is done doing interactive work (for example, mouse up).

Note: The viewer "this" pointer is passed as callback data.

Definition at line 642 of file SoQtViewer.h.

◆ adjustClippingPlanes()

virtual SoDEPRECATED void SoQtViewer::adjustClippingPlanes ( )
virtual

Along with the manipulation of the camera, SoBaseStereo needs to set the scene appropriately when changing the camera settings.

◆ enableFullRenderingWhenStill()

void SoQtViewer::enableFullRenderingWhenStill ( SbBool  onOff)

If this flag is set, the viewer will render at full resolution when it sits still for a certain period of time.

Default is false.

The default value can be set using the environment variable OIV_FULL_RENDER_WHEN_STILL (0 = FALSE, 1 = TRUE).

◆ enableMouseWheelDolly()

void SoQtViewer::enableMouseWheelDolly ( SbBool  onOff)
inline

Enable/disable moving the camera with the mouse wheel, TRUE by default.

Definition at line 977 of file SoQtViewer.h.

◆ enableSeekWithOrtho()

virtual void SoQtViewer::enableSeekWithOrtho ( SbBool  flag)
inlinevirtual

If FALSE, the seek functionality is disabled for an SoOrthographicCamera.

Default is TRUE.

Definition at line 392 of file SoQtViewer.h.

◆ getAutoClipTolerance()

float SoQtViewer::getAutoClipTolerance ( ) const
inline

Gets the auto clipping tolerance value.

Definition at line 940 of file SoQtViewer.h.

◆ getBottomRight()

virtual const SbVec2s & SoQtViewer::getBottomRight ( )
virtual

Returns the position of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).

Returns "Bottom" in the first value of the vector and "Right" in the second value (reverse of the usual X,Y ordering). This is important, for example, for interlaced auto-stereo displays that need the left or right eye view specifically on even or odd pixel row/column.

Implements SoStereoViewer.

◆ getBufferingType()

SoQtViewer::BufferType SoQtViewer::getBufferingType ( )
inline

Gets the current buffering type in the main view.

Definition at line 519 of file SoQtViewer.h.

◆ getCamera()

SoCamera * SoQtViewer::getCamera ( )
inline

Gets the edited camera.

Definition at line 355 of file SoQtViewer.h.

◆ getCameraSceneGraph()

SoNode * SoQtViewer::getCameraSceneGraph ( )

Gets the sub-scene graph to be viewed.

See setCameraSceneGraph().

◆ getCameraType()

SoType SoQtViewer::getCameraType ( )
inline

Gets the camera type that will be created by the viewer if no cameras are found in the scene graph (see SoPerspectiveCamera and SoOrthographicCamera).

Definition at line 371 of file SoQtViewer.h.

◆ getCurrentDecimationPercentage()

float SoQtViewer::getCurrentDecimationPercentage ( )

Returns the Decimation Percentage the viewer used in its last render.

◆ getCursorStyle()

SoQtViewer::CursorStyle SoQtViewer::getCursorStyle ( )
inline

Returns the cursor style.

Definition at line 923 of file SoQtViewer.h.

◆ getDecimationStrategy()

SoQtViewer::DecimationStrategy SoQtViewer::getDecimationStrategy ( )
inline

Gets strategy to use to decide on decimation value.

Definition at line 692 of file SoQtViewer.h.

◆ getDepthValue()

SbBool SoQtViewer::getDepthValue ( int  x,
int  y,
float &  depth 
)
inline

Returns the depth value, scaled between 0.0 and 1.0, from the depth buffer at window coordinates x, y.

This is only valid after the traversal of the scene graph e.g., in a post render callback (see setPostRenderCallback()).

Definition at line 1037 of file SoQtViewer.h.

◆ getDrawStyle()

SoQtViewer::DrawStyle SoQtViewer::getDrawStyle ( SoQtViewer::DrawType  type)

Queries the current drawing style in the main view.

◆ getFixedPercentage()

float SoQtViewer::getFixedPercentage ( )
inline

Gets fixed percentage for the viewer to render (0.0 to 1.0)

Definition at line 735 of file SoQtViewer.h.

◆ getGoalFramesPerSecond()

float SoQtViewer::getGoalFramesPerSecond ( )
inline

Gets goal frames per second for the viewer to try to render.

Definition at line 721 of file SoQtViewer.h.

◆ getGoalNumberOfTriangles()

int32_t SoQtViewer::getGoalNumberOfTriangles ( )
inline

Gets goal number of triangles for the viewer to try to render.

Definition at line 707 of file SoQtViewer.h.

◆ getHeadlight()

SoDirectionalLight * SoQtViewer::getHeadlight ( )
inline

Returns the headlight node.

Definition at line 453 of file SoQtViewer.h.

◆ getNumSamples()

int SoQtViewer::getNumSamples ( )
inline

Gets how many frames should be timed before frames per second callback is called.

Definition at line 772 of file SoQtViewer.h.

◆ getPickRadius()

float SoQtViewer::getPickRadius ( ) const

Returns the current pick radius for picking and seeking actions.

◆ getSceneGraph()

virtual SoNode * SoQtViewer::getSceneGraph ( )
virtual

Gets the scene graph to render.

Reimplemented from SoQtRenderArea.

◆ getSceneRoot()

SoSeparator * SoQtViewer::getSceneRoot ( )
inline

Returns the viewer's scene root.

Definition at line 902 of file SoQtViewer.h.

◆ getSeekTime()

float SoQtViewer::getSeekTime ( )
inline

Queries the seek time.

Definition at line 632 of file SoQtViewer.h.

◆ getSize()

virtual const SbVec2s & SoQtViewer::getSize ( )
virtual

Returns the size of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).

Implements SoStereoViewer.

◆ getStereoBalance()

virtual float SoQtViewer::getStereoBalance ( )
virtual

Returns the current stereo balance.

Implements SoStereoViewer.

◆ getStereoOffset()

float SoQtViewer::getStereoOffset ( )
virtual

Returns the stereo offset.

See setStereoViewing() for additional info.

Implements SoStereoViewer.

◆ getStereoViewType()

SoBaseStereo * SoQtViewer::getStereoViewType ( )
virtual

Returns the current stereo implementation.

Implements SoStereoViewer.

◆ getTopLeft()

virtual const SbVec2s & SoQtViewer::getTopLeft ( )
virtual

Returns the position of the OpenGL drawing window in absolute screen coordinates (not relative to parent window) of the native window system (typically Y increasing downward).

Returns "Top" in the first value of the vector and "Left" in the second value (reverse of the usual X,Y ordering). This is important, for example, for interlaced auto-stereo displays that need the left or right eye view specifically on even or odd pixel row/column.

Implements SoStereoViewer.

◆ getViewerCamera()

virtual SoCamera * SoQtViewer::getViewerCamera ( )
virtual

Returns the camera so SoBaseStereo can manipulate it to achieve the stereo effect.

Implements SoStereoViewer.

◆ getViewport()

void SoQtViewer::getViewport ( short &  left,
short &  bottom,
short &  width,
short &  height 
)
virtual

Returns viewport region as origin (lower-left corner) and size, given as pixel coordinates.

Implements SoStereoViewer.

◆ isAutoClipping()

SbBool SoQtViewer::isAutoClipping ( ) const
inline

Queries if auto clipping is ON.

Definition at line 574 of file SoQtViewer.h.

◆ isCameraHeightAnglePreserved()

virtual SbBool SoQtViewer::isCameraHeightAnglePreserved ( ) const
inlinevirtual

Query whether the SoPerspectiveCamera's heightAngle is preserved if the camera is changed to an SoOrthographicCamera and then toggled back to an SoPerspectiveCamera.

Definition at line 386 of file SoQtViewer.h.

◆ isCursorEnabled()

SbBool SoQtViewer::isCursorEnabled ( ) const
inline

Queries whether the viewer is allowed to change the cursor over the renderArea window.

Definition at line 557 of file SoQtViewer.h.

◆ isDetailSeek()

SbBool SoQtViewer::isDetailSeek ( )
inline

Queries whether the viewer is in seek mode.

Definition at line 613 of file SoQtViewer.h.

◆ isFullRenderingWhenStill()

SbBool SoQtViewer::isFullRenderingWhenStill ( )
inline

Queries if the viewer will render at full resolution when it sits still for a certain period of time.

Definition at line 751 of file SoQtViewer.h.

◆ isHeadlight()

SbBool SoQtViewer::isHeadlight ( )
inline

Queries if the headlight is on.

Definition at line 448 of file SoQtViewer.h.

◆ isSeekMode()

SbBool SoQtViewer::isSeekMode ( )
inline

Returns TRUE if currently in seek mode.

Definition at line 992 of file SoQtViewer.h.

◆ isSeekWithOrthoEnabled()

virtual SbBool SoQtViewer::isSeekWithOrthoEnabled ( ) const
inlinevirtual

Query whether the seek functionality is enabled for an SoOrthographicCamera.

Definition at line 398 of file SoQtViewer.h.

◆ isStereoAbsoluteAdjustments()

virtual SbBool SoQtViewer::isStereoAbsoluteAdjustments ( ) const
inlinevirtual

Returns TRUE if stereo absolute adjustments are enabled.

Reimplemented from SoStereoViewer.

Definition at line 859 of file SoQtViewer.h.

◆ isStereoActive()

virtual SbBool SoQtViewer::isStereoActive ( )
virtual

Returns TRUE if stereo is active.

Implements SoStereoViewer.

◆ isStereoBalanceNearFrac()

virtual SbBool SoQtViewer::isStereoBalanceNearFrac ( )
virtual

Returns TRUE if the stereo balance adjustement is defined as a fraction of the camera near distance.

Implements SoStereoViewer.

◆ isStereoViewing()

virtual SbBool SoQtViewer::isStereoViewing ( )
virtual

Queries if stereo viewing is on or off on the viewer.

See setStereoViewing() for additional info.

◆ isStereoViewReversed()

SbBool SoQtViewer::isStereoViewReversed ( )
virtual

Returns TRUE if the left and right eye views are reversed.

Implements SoStereoViewer.

◆ isStillNow()

SbBool SoQtViewer::isStillNow ( )
inline

Returns whether the viewer is currently still.

Definition at line 756 of file SoQtViewer.h.

◆ isViewerDoubleBuffer()

virtual SbBool SoQtViewer::isViewerDoubleBuffer ( )
virtual

Returns TRUE if viewer is double buffered.

Implements SoStereoViewer.

◆ isViewing()

SbBool SoQtViewer::isViewing ( ) const
inline

Queries whether the viewer is turned on or off.

See setViewing() for details.

Definition at line 539 of file SoQtViewer.h.

◆ processCommonEnterEvents

void SoQtViewer::processCommonEnterEvents ( unsigned int  state)
protectedslot

Process common enter events of the viewer.

◆ recomputeSceneSize()

virtual void SoQtViewer::recomputeSceneSize ( )
virtual

This can be used to let the viewer know that the scene graph has changed so that the viewer can recompute things like speed which depend on the scene graph size.

Note: This routine is automatically called whenever setSceneGraph() is called.

Reimplemented in SoQtConstrainedViewer.

◆ removeFinishCallback()

void SoQtViewer::removeFinishCallback ( SoQtViewerCB f,
void *  userData = NULL 
)
inline

Removes finish callback routine from the viewer.

Note: The viewer "this" pointer is passed as callback data.

Definition at line 669 of file SoQtViewer.h.

◆ removeStartCallback()

void SoQtViewer::removeStartCallback ( SoQtViewerCB f,
void *  userData = NULL 
)
inline

Removes start callback routine from the viewer.

Note: The viewer "this" pointer is passed as callback data.

Definition at line 661 of file SoQtViewer.h.

◆ resetToHomePosition()

virtual void SoQtViewer::resetToHomePosition ( )
virtual

Restores the camera values.

Reimplemented in SoQtConstrainedViewer, SoQtExaminerViewer, and SoQtFlyViewer.

◆ reverseStereoView()

void SoQtViewer::reverseStereoView ( SbBool  reverse)
virtual

If TRUE, reverse the left and right eye views.

Implements SoStereoViewer.

◆ saveHomePosition()

virtual void SoQtViewer::saveHomePosition ( )
virtual

Saves the camera values.

Reimplemented in SoQtConstrainedViewer.

◆ setAutoClipping()

void SoQtViewer::setAutoClipping ( SbBool  onOrOff)

Sets the auto clipping plane.

When auto clipping is ON, the camera near and far planes are dynamically adjusted to be as tight as possible around the objects being viewed. When OFF, the user is expected to manually set those planes within the preference sheet (default is on). Default is ON.

The default value can be set using the environment variable OIV_AUTO_CLIPPING (0 = FALSE, 1 = TRUE).

◆ setAutoClipTolerance()

void SoQtViewer::setAutoClipTolerance ( float  tolerance)
inline

Sets the auto clipping tolerance value.

Auto clipping normally sets the near and far clip planes based on the scene's bounding box. If the camera is inside the scene bounding box, the near plane is moved in front of the camera using tolerance *bbox size. The default is 0.001.

The default value can be set using the environment variable OIV_AUTO_CLIP_TOLERANCE.

Definition at line 935 of file SoQtViewer.h.

◆ setBufferingType()

virtual void SoQtViewer::setBufferingType ( SoQtViewer::BufferType  type)
virtual

Sets the current buffering type in the main view (default SoQtViewer::BUFFER_DOUBLE).

Reimplemented in SoQtFullViewer.

◆ setCamera()

virtual void SoQtViewer::setCamera ( SoCamera cam)
virtual

Sets the edited camera.

Setting the camera is only needed if the first camera found in the scene when setting the scene graph isn't the one the user really wants to edit.

Reimplemented in SoQtExaminerViewer, SoQtFlyViewer, SoQtFullViewer, SoQtPlaneViewer, SoQtWalkViewer, and SoQtConstrainedViewer.

◆ setCameraSceneGraph()

virtual void SoQtViewer::setCameraSceneGraph ( SoNode cameraSceneGraph)
virtual

Sets the sub-scene graph to be used for viewAll computation.


If this sub-scene graph contains a camera, this camera will be used as the viewer camera. Otherwise the first camera of the scene graph will be used. If no camera is found, the viewer will create its own above the root.

When viewAll computes the bounding box that will be used for determining where to position the camera, it will base its computation on this sub-scene graph rather than on the entire scene graph.

It is useful to specify a sub-scene graph when, for instance, you are using a second camera in the scene, followed by annotation. With this method you can exclude the annotation from the viewAll bounding box computation. Note that since Open Inventor 8.0 you can also exclude portions of the scene graph from the bounding box computation using an SoBBox node.

This method can also be useful when using PoView/PoSceneView. As the viewer uses the first camera it finds, it could find the camera of a PoView/PoSceneView. The bounding box would be computed based on the sub-scene graph owned by this PoView/PoSceneView. Thus the global bounding box of the whole scene would be wrong, causing some clipping problems when viewing.

◆ setCameraType()

virtual void SoQtViewer::setCameraType ( SoType  type)
virtual

Sets the camera type that will be created by the viewer if no cameras are found in the scene graph (see SoPerspectiveCamera and SoOrthographicCamera).

By default an SoPerspectiveCamera will be created if no cameras are found.

Note: The set method will only take effect the next time a scene graph is specified (and if no cameras are found).

Reimplemented in SoQtFlyViewer, and SoQtWalkViewer.

◆ setCameraTypeChangeCallback()

void SoQtViewer::setCameraTypeChangeCallback ( SoQtViewerCameraTypeChangeCB callback,
void *  userdata 
)

Defines a callback which is called each time the camera type has changed (change from SoPerspectiveCamera to SoOrthographicCamera or vice versa).

◆ setCursorEnabled()

virtual void SoQtViewer::setCursorEnabled ( SbBool  onOrOff)
virtual

Sets whether the viewer is allowed to change the cursor over the renderArea window.

When disabled, the cursor is not defined by the viewer and will not change as the mode of the viewer changes. When re-enabled, the viewer will reset it to the appropriate icon.

Disabling the cursor enables the application to set the cursor directly on the viewer window or on any parent widget of the viewer. This can be used when setting a busy cursor on the application shell.

Reimplemented in SoQtExaminerViewer, SoQtFlyViewer, SoQtPlaneViewer, and SoQtWalkViewer.

◆ setCursorStyle()

virtual void SoQtViewer::setCursorStyle ( SoQtViewer::CursorStyle  style)
virtual

Sets the cursor style.

The standard Open Inventor (CLASSIC) cursors use all white pixels, which can be difficult to see over light colored geometry or background. The XOR and SHADOW style cursors are much easier to see. The XOR style cursors that have a "hand" shape differ from the other styles in that the cursor hotspot is at the tip of the index finger. This generally works better for picking.

The cursor can also be specified using environment variable OIV_CURSOR_STYLE, where the values 0, 1, and 2 specify Classic, XOR, and Shadow cursors respectively.

Note: This method only has an effect if setCursorEnabled is set to TRUE.

◆ setDecimationPercentageCallback()

void SoQtViewer::setDecimationPercentageCallback ( SoQtViewerDecimationPercentageCB callback,
void *  userData = NULL 
)

Registers decimation percentage callback.

◆ setDecimationStrategy()

void SoQtViewer::setDecimationStrategy ( SoQtViewer::DecimationStrategy  strategy)

Sets strategy to use to decide on decimation value.

Default is normal.
Valid values are NORMAL, FIXED_NUM_TRIANGLES, FRAMES_PER_SECOND, FIXED_PERCENTAGE.

◆ setDetailSeek()

void SoQtViewer::setDetailSeek ( SbBool  onOrOff)
inline

When the viewer is in seek mode, left mouse clicks initiate a pick, and the viewer changes its orientation and position to look at the picked object.

This routine tells the seeking viewer whether to orient the camera towards the picked point (detail on), or the center of the object's bounding box (detail off). Default is detail on.

Definition at line 608 of file SoQtViewer.h.

◆ setDrawStyle()

virtual void SoQtViewer::setDrawStyle ( SoQtViewer::DrawType  type,
SoQtViewer::DrawStyle  style 
)
virtual

Sets the current drawing style in the main view.

The user can specify the INTERACTIVE draw style (draw style used when the scene changes) independently from the STILL style. Default is VIEW_AS_IS draw style for STILL and VIEW_SAME_AS_STILL for INTERACTIVE.

The default value can be set using the environment variables OIV_STILL_DRAW_STYLE and OIV_INTERACTIVE_DRAW_STYLE. Valid values are VIEW_AS_IS, VIEW_HIDDEN_LINE, VIEW_NO_TEXTURE, VIEW_LOW_COMPLEXITY, VIEW_LINE, VIEW_POINT, VIEW_BBOX, VIEW_LOW_RES_LINE, VIEW_LOW_RES_POINT for OIV_STILL_DRAW_STYLE and the same plus VIEW_SAME_AS_STILL for OIV_INTERACTIVE_DRAW_STYLE.

Possible draw styles are: VIEW_AS_IS - Leaves the objects unchanged.

VIEW_HIDDEN_LINE - Renders the object as wireframe, but only shows the object front faces. This is accomplished using a two-pass rendering. In the first pass, the objects are rendered as FILLED using the background BASE_COLOR (this sets up the wanted z-buffer values). The second pass then renders the objects as LINES, while adjusting the z-buffer range to limit overlapping polygons problems.

VIEW_NO_TEXTURE - Renders the objects without any textures. This is done by setting the override flag on an empty SoTexture2 node.

VIEW_LOW_COMPLEXITY - Renders the objects without any textures and with a low complexity. This is done by setting the override flag on an empty SoTexture2 node, and by setting a low complexity value on an SoComplexity node with override set to TRUE.

VIEW_LINE - Renders the objects as LINES (no texture) with lighting model set to BASE_COLOR.

VIEW_LOW_RES_LINE - Renders the objects as LINES (no texture) using a low complexity, with lighting model set to BASE_COLOR and no depth comparison.

VIEW_POINT - Renders the objects as POINTS (no texture) with lighting model set to BASE_COLOR.

VIEW_LOW_RES_POINT - Renders the objects as POINTS (no texture) using a low complexity, with lighting model set to BASE_COLOR and no depth comparison.

VIEW_BBOX - Renders the objects with complexity BOUNDING_BOX, lighting model set to BASE_COLOR and drawing style LINES (no texture) with no depth comparison.

VIEW_SAME_AS_STILL - This only applies to INTERACTIVE draw type. It enables the interactive draw style mode to match the regular draw style mode without having to set it explicitly.

Reimplemented in SoQtFullViewer.

◆ setFixedPercentage()

void SoQtViewer::setFixedPercentage ( float  percent)

Sets fixed percentage for the viewer to render (0.0 to 1.0) Default is 1.0.



The default value can be set using the environment variable OIV_DECIMATION_PERCENTAGE (0.0 to 1.0).

◆ setFramesPerSecondCallback()

void SoQtViewer::setFramesPerSecondCallback ( SoQtViewerFPSCB callback,
void *  userData = NULL 
)

Registers frames per second callback.

◆ setGoalFramesPerSecond()

void SoQtViewer::setGoalFramesPerSecond ( float  goal)

Sets goal frames per second for the viewer to try to render.

Default is 8.0.

The default value can be set using the environment variable OIV_DECIMATION_GOAL_FPS.

◆ setGoalNumberOfTriangles()

void SoQtViewer::setGoalNumberOfTriangles ( int32_t  goal)

Sets goal number of triangles for the viewer to try to render.

Default is 10000.

The default value can be set using the environment variable OIV_DECIMATION_GOAL_NUM_OF_TRIANGLES.

◆ setHeadlight()

virtual void SoQtViewer::setHeadlight ( SbBool  onOrOff)
virtual

Turns the headlight on/off (default on).



The default value can be set using the environment variable OIV_USE_HEADLIGHT (0 = FALSE, 1 = TRUE).

Reimplemented in SoQtFullViewer.

◆ setNumSamples()

void SoQtViewer::setNumSamples ( int  numFrames)

Sets how many frames should be timed before frames per second callback is called, default is 10.

◆ setPickRadius()

void SoQtViewer::setPickRadius ( float  radius)

Sets the pick radius, in pixels, used by the viewer for picking and seeking actions.

Effectively calls setRadius() on the viewer's internal SoRayPickAction. The default is the SoRayPickAction default (5 pixels).

Specifying a radius of 0 may give better performance. In particular, some shapes like MoMeshSkin implement a fast GPU picking algorithm that can only be used when radius is 0.

◆ setPreserveCameraHeightAngle()

virtual void SoQtViewer::setPreserveCameraHeightAngle ( SbBool  flag)
inlinevirtual

If TRUE, an SoPerspectiveCamera's heightAngle is preserved if the camera is changed to an SoOrthographicCamera and then toggled back to an SoPerspectiveCamera.

Default is FALSE.

Definition at line 378 of file SoQtViewer.h.

◆ setSceneGraph()

virtual void SoQtViewer::setSceneGraph ( SoNode newScene)
virtual

Sets the scene graph to render.

Whenever a new scene is supplied the first camera encountered will be by default used as the edited camera, else a new camera will be created. If the scene graph does not contain any light nodes, the viewer inserts a headlight (directional light which is made to follow the camera) immediately after the camera. See the main description of this class for further details.

Reimplemented from SoQtRenderArea.

◆ setSeekMode()

virtual void SoQtViewer::setSeekMode ( SbBool  onOrOff)
virtual

Set the viewer into/out of seek mode (default OFF).

Actual seeking will not happen until the viewer decides to, for example, on a mouse click.

Note: Setting the viewer out of seek mode while the camera is being animated will stop the animation at the current location.

Reimplemented in SoQtExaminerViewer, SoQtFlyViewer, SoQtPlaneViewer, and SoQtWalkViewer.

◆ setSeekTime()

void SoQtViewer::setSeekTime ( float  seconds)
inline

Sets the time a seek takes to change to the new camera location.

A value of zero seeks directly to the point without any animation. Default value is 2 seconds.

For historical reasons, setting the seek time to zero causes the viewer to stay in seek mode. If you want the camera to move immediately to its new position and still have the viewer leave seek mode after moving the camera, set the seek time to a very small non-zero value.

The default value can be set using the environment variable OIV_SEEK_TIME.

Definition at line 627 of file SoQtViewer.h.

◆ setStereoAbsoluteAdjustments()

virtual void SoQtViewer::setStereoAbsoluteAdjustments ( SbBool  absolute)
virtual

If TRUE, use stereo absolute adjustments.

Reimplemented from SoStereoViewer.

◆ setStereoActive()

virtual void SoQtViewer::setStereoActive ( SbBool  activate)
virtual

If TRUE, stero is activated.

Default is FALSE. The default can be set using the OIV_STEREO_ACTIVE environment variable.

Implements SoStereoViewer.

◆ setStereoBalance()

virtual void SoQtViewer::setStereoBalance ( float  balance,
SbBool  nearFrac = false 
)
virtual

Sets the stereo balance (the position of the zero parallax plane).

Default is 1.0. The default can be set using the OIV_STEREO_BALANCE environment variable.

Implements SoStereoViewer.

◆ setStereoOffset()

void SoQtViewer::setStereoOffset ( float  dist)
virtual

Sets the stereo offset.

See setStereoViewing() for additional info.

Implements SoStereoViewer.

◆ setStereoViewing()

virtual void SoQtViewer::setStereoViewing ( SbBool  onOrOff)
virtual

Turns stereo viewing on/off on the viewer (default off).

When in stereo mode, which may not work on all machines, the scene is rendered twice (in the left and right buffers) with an offset between the two views to simulate stereo viewing. Stereo glasses have to be used to see the effect. Stereo viewing is only possible with a graphics board that has support for stereo.

◆ setStereoViewType()

void SoQtViewer::setStereoViewType ( SoBaseStereo stereo)
virtual

Set an implementation of stereo viewing to use.


If stereo is NULL, stereo is inactivated (see setStereoActive). Default is SoAnaglyphStereo with RED_CYAN color filter. The default can be set using the OIV_STEREO_TYPE environment variable.

Implements SoStereoViewer.

◆ setViewing()

virtual void SoQtViewer::setViewing ( SbBool  onOrOff)
virtual

Sets whether the viewer is turned on or off.

When turned on, events are consumed by the viewer. When viewing is off, events are processed by the viewer's render area. This means events will be sent down to the scene graph for processing (i.e. picking can occur). Note that if the application has registered an event callback, it will be invoked on every message, whether viewing is turned on or not. However, the return value of this callback (which specifies whether the callback handled the event or not) is ignored when viewing is on. That is, the viewer will process the event even if the callback already did. This is to ensure that the viewing paradigm is not broken (default viewing is on).

Reimplemented in SoQtExaminerViewer, SoQtFlyViewer, SoQtFullViewer, SoQtPlaneViewer, and SoQtWalkViewer.

◆ setViewport()

void SoQtViewer::setViewport ( short  left,
short  bottom,
short  width,
short  height 
)
virtual

Sets viewport region with given origin (lower-left corner) and size, given as pixel coordinates.

Implements SoStereoViewer.

◆ toggleCameraType()

virtual void SoQtViewer::toggleCameraType ( )
virtual

This routine will toggle the current camera from perspective to orthographic, and from orthographic back to perspective.


Note: It is not actually possible to "toggle" the type of a camera. In fact the current camera will be replaced by a new camera of the appropriate type. Of course the current camera node will be destroyed in the process unless it has been ref'd elsewhere.

◆ viewAll()

virtual void SoQtViewer::viewAll ( )
virtual

Changes the camera position to view the entire scene (the camera zoom or orientation isn't changed).

The viewer applies an SoGetBoundingBoxAction to the scene graph to get the bounding box of the entire scene. The bounding box will only include shapes that are actually traversed. For example the bounding box will not include shapes under an SoSwitch with whichChild set to SO_SWITCH_NONE. The action does not consider the visibility of shapes that are traversed. In other words the bounding box will include shapes that are invisible (SoDrawStyle), shapes that are clipped (SoClipPlane), etc. Use an SoBBox node to exclude shapes from the bounding box computation. Bounding boxes are automatically cached at SoSeparator nodes, so getting the bounding box is very fast when the scene graph has not been changed.

See all SoCamera::viewAll(). This method allows the application to adjust the camera based on a specific sub-graph or path in the scene graph.

Reimplemented in SoQtExaminerViewer.


The documentation for this class was generated from the following file: