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SoQtFlyViewer Class Reference

The SoQtFlyViewer class implements controls for moving the camera in a "flying" motion. More...

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

Inheritance diagram for SoQtFlyViewer:
SoQtConstrainedViewer SoQtFullViewer SoQtViewer SoQtRenderArea SoQtGLWidget SoQtComponent SoQtObject

Public Member Functions

 SoQtFlyViewer (QWidget *parent=NULL, const char *name=NULL, SbBool embed=TRUE, SoQtFullViewer::BuildFlag flag=BUILD_ALL, SoQtViewer::Type type=BROWSER)
 
 ~SoQtFlyViewer ()
 
virtual void setViewing (SbBool enable)
 
virtual void viewAll (void)
 
virtual void resetToHomePosition (void)
 
virtual void setCamera (SoCamera *camera)
 
virtual void setCursorEnabled (SbBool enable)
 
virtual void setCameraType (SoType type)
 
- Public Member Functions inherited from SoQtConstrainedViewer
void setUpDirection (const SbVec3f &dir)
 
const SbVec3fgetUpDirection (void) const
 
virtual void saveHomePosition (void)
 
- Public Member Functions inherited from SoQtFullViewer
void setDecoration (const SbBool on)
 
SbBool isDecoration (void) const
 
void setPopupMenuEnabled (const SbBool on)
 
SbBool isPopupMenuEnabled (void) const
 
QWidget * getAppPushButtonParent (void) const
 
void addAppPushButton (QWidget *newButton)
 
void insertAppPushButton (QWidget *newButton, int index)
 
void removeAppPushButton (QWidget *oldButton)
 
int findAppPushButton (QWidget *oldButton) const
 
int lengthAppPushButton (void) const
 
QWidget * getRenderAreaWidget (void) const
 
virtual void setComponentCursor (const SoQtCursor &cursor)
 
- Public Member Functions inherited from SoQtViewer
SoCameragetCamera (void) const
 
SoType getCameraType (void) const
 
virtual void toggleCameraType (void)
 
virtual void setHeadlight (SbBool enable)
 
SbBool isHeadlight (void) const
 
SoDirectionalLightgetHeadlight (void) const
 
virtual void setDrawStyle (SoQtViewer::DrawType type, SoQtViewer::DrawStyle style)
 
SoQtViewer::DrawStyle getDrawStyle (const SoQtViewer::DrawType type) const
 
virtual void setBufferingType (SoQtViewer::BufferType type)
 
SoQtViewer::BufferType getBufferingType (void) const
 
SbBool isViewing (void) const
 
SbBool isCursorEnabled (void) const
 
void setAutoClipping (SbBool enable)
 
SbBool isAutoClipping (void) const
 
void setAutoClippingStrategy (const AutoClippingStrategy strategy, const float value=0.6f, SoQtAutoClippingCB *cb=NULL, void *cbuserdata=NULL)
 
virtual void setStereoViewing (SbBool enable)
 
SbBool isStereoViewing (void) const
 
virtual void setStereoOffset (const float dist)
 
float getStereoOffset (void) const
 
SbBool setStereoType (SoQtViewer::StereoType s)
 
SoQtViewer::StereoType getStereoType (void) const
 
void setAnaglyphStereoColorMasks (const SbBool left[3], const SbBool right[3])
 
void getAnaglyphStereoColorMasks (SbBool left[3], SbBool right[3])
 
void setDetailSeek (const SbBool enable)
 
SbBool isDetailSeek (void) const
 
void setSeekTime (const float seconds)
 
float getSeekTime (void) const
 
void addStartCallback (SoQtViewerCB *func, void *data=NULL)
 
void addFinishCallback (SoQtViewerCB *func, void *data=NULL)
 
void removeStartCallback (SoQtViewerCB *func, void *data=NULL)
 
void removeFinishCallback (SoQtViewerCB *func, void *data=NULL)
 
void setWireframeOverlayColor (const SbColor &color)
 
const SbColorgetWireframeOverlayColor (void) const
 
virtual void setDoubleBuffer (const SbBool enable)
 
virtual void setSceneGraph (SoNode *root)
 
virtual SoNodegetSceneGraph (void)
 
- Public Member Functions inherited from SoQtRenderArea
 SoQtRenderArea (QWidget *parent=NULL, const char *name=NULL, SbBool embed=TRUE, SbBool mouseInput=TRUE, SbBool keyboardInput=TRUE)
 
 ~SoQtRenderArea ()
 
void setOverlaySceneGraph (SoNode *scene)
 
SoNodegetOverlaySceneGraph (void)
 
void setBackgroundColor (const SbColor &color)
 
const SbColorgetBackgroundColor (void) const
 
void setBackgroundIndex (int idx)
 
int getBackgroundIndex (void) const
 
void setOverlayBackgroundIndex (int idx)
 
int getOverlayBackgroundIndex (void) const
 
void setColorMap (int start, int num, const SbColor *colors)
 
void setOverlayColorMap (int start, int num, const SbColor *colors)
 
void setViewportRegion (const SbViewportRegion &newRegion)
 
const SbViewportRegiongetViewportRegion (void) const
 
void setTransparencyType (SoGLRenderAction::TransparencyType type)
 
SoGLRenderAction::TransparencyType getTransparencyType (void) const
 
void setAntialiasing (SbBool smoothing, int numPasses)
 
void getAntialiasing (SbBool &smoothing, int &numPasses) const
 
void setClearBeforeRender (SbBool enable, SbBool zbEnable=TRUE)
 
SbBool isClearBeforeRender (void) const
 
SbBool isClearZBufferBeforeRender (void) const
 
void setClearBeforeOverlayRender (SbBool enable)
 
SbBool isClearBeforeOverlayRender (void) const
 
void setAutoRedraw (SbBool enable)
 
SbBool isAutoRedraw (void) const
 
void setRedrawPriority (uint32_t priority)
 
uint32_t getRedrawPriority (void) const
 
void render (void)
 
void renderOverlay (void)
 
void scheduleRedraw (void)
 
void scheduleOverlayRedraw (void)
 
void redrawOnSelectionChange (SoSelection *selection)
 
void redrawOverlayOnSelectionChange (SoSelection *selection)
 
void setEventCallback (SoQtRenderAreaEventCB *func, void *user=NULL)
 
void setSceneManager (SoSceneManager *manager)
 
SoSceneManagergetSceneManager (void) const
 
void setOverlaySceneManager (SoSceneManager *manager)
 
SoSceneManagergetOverlaySceneManager (void) const
 
void setGLRenderAction (SoGLRenderAction *action)
 
SoGLRenderActiongetGLRenderAction (void) const
 
void setOverlayGLRenderAction (SoGLRenderAction *action)
 
SoGLRenderActiongetOverlayGLRenderAction (void) const
 
SbBool sendSoEvent (const SoEvent *event)
 
void registerDevice (SoQtDevice *device)
 
void unregisterDevice (SoQtDevice *device)
 
- Public Member Functions inherited from SoQtGLWidget
void setBorder (const SbBool enable)
 
SbBool isBorder (void) const
 
SbBool isDoubleBuffer (void) const
 
void setDrawToFrontBufferEnable (const SbBool enable)
 
SbBool isDrawToFrontBufferEnable (void) const
 
void setQuadBufferStereo (const SbBool enable)
 
SbBool isQuadBufferStereo (void) const
 
void setAccumulationBuffer (const SbBool enable)
 
SbBool getAccumulationBuffer (void) const
 
void setStencilBuffer (const SbBool enable)
 
SbBool getStencilBuffer (void) const
 
void setAlphaChannel (const SbBool enable)
 
SbBool getAlphaChannel (void) const
 
void setOverlayRender (const SbBool onoff)
 
SbBool isOverlayRender (void) const
 
void setSampleBuffers (const int numsamples)
 
int getSampleBuffers (void) const
 
void setStealFocus (SbBool enable)
 
SbBool isStealFocus (void) const
 
QWidget * getGLWidget (void) const
 
QWidget * getNormalWidget (void) const
 
QWidget * getOverlayWidget (void) const
 
SbBool hasOverlayGLArea (void) const
 
SbBool hasNormalGLArea (void) const
 
unsigned long getOverlayTransparentPixel (void)
 
void getPointSizeLimits (SbVec2f &range, float &granularity)
 
void getLineWidthLimits (SbVec2f &range, float &granularity)
 
- Public Member Functions inherited from SoQtComponent
virtual ~SoQtComponent ()
 
virtual void show (void)
 
virtual void hide (void)
 
SbBool isFullScreen (void) const
 
SbBool setFullScreen (const SbBool onoff)
 
SbBool isVisible (void)
 
SbBool isTopLevelShell (void) const
 
QWidget * getWidget (void) const
 
QWidget * getBaseWidget (void) const
 
QWidget * getShellWidget (void) const
 
QWidget * getParentWidget (void) const
 
void setSize (const SbVec2s size)
 
SbVec2s getSize (void) const
 
void setTitle (const char *const title)
 
const char * getTitle (void) const
 
void setIconTitle (const char *const title)
 
const char * getIconTitle (void) const
 
const char * getWidgetName (void) const
 
const char * getClassName (void) const
 
void setWindowCloseCallback (SoQtComponentCB *const func, void *const user=NULL)
 
- Public Member Functions inherited from SoQtObject
virtual SoType getTypeId (void) const =0
 
SbBool isOfType (SoType type) const
 

Protected Member Functions

 SoQtFlyViewer (QWidget *parent, const char *const name, SbBool embed, SoQtFullViewer::BuildFlag flag, SoQtViewer::Type type, SbBool build)
 
virtual const char * getDefaultWidgetName (void) const
 
virtual const char * getDefaultTitle (void) const
 
virtual const char * getDefaultIconTitle (void) const
 
virtual SbBool processSoEvent (const SoEvent *const event)
 
virtual void setSeekMode (SbBool enable)
 
virtual void actualRedraw (void)
 
virtual void rightWheelMotion (float value)
 
virtual void afterRealizeHook (void)
 
- Protected Member Functions inherited from SoQtConstrainedViewer
 SoQtConstrainedViewer (QWidget *parent, const char *const name, SbBool embed, SoQtFullViewer::BuildFlag flag, SoQtViewer::Type type, SbBool build)
 
 ~SoQtConstrainedViewer ()
 
virtual void tiltCamera (float delta)
 
virtual void bottomWheelMotion (float value)
 
virtual void leftWheelMotion (float value)
 
virtual void changeCameraValues (SoCamera *camera)
 
void findUpDirection (SbVec2s mouselocation)
 
void checkForCameraUpConstrain (void)
 
- Protected Member Functions inherited from SoQtFullViewer
 SoQtFullViewer (QWidget *parent, const char *name, SbBool embed, BuildFlag flag, Type type, SbBool build)
 
 ~SoQtFullViewer ()
 
virtual void sizeChanged (const SbVec2s &size)
 
QWidget * buildWidget (QWidget *parent)
 
virtual void buildDecoration (QWidget *parent)
 
virtual QWidget * buildLeftTrim (QWidget *parent)
 
virtual QWidget * buildBottomTrim (QWidget *parent)
 
virtual QWidget * buildRightTrim (QWidget *parent)
 
QWidget * buildAppButtons (QWidget *parent)
 
QWidget * buildViewerButtons (QWidget *parent)
 
virtual void createViewerButtons (QWidget *parent, SbPList *buttonlist)
 
virtual void buildPopupMenu (void)
 
virtual void setPopupMenuString (const char *title)
 
virtual void openPopupMenu (const SbVec2s position)
 
virtual void leftWheelStart (void)
 
virtual void leftWheelFinish (void)
 
float getLeftWheelValue (void) const
 
void setLeftWheelValue (const float value)
 
virtual void bottomWheelStart (void)
 
virtual void bottomWheelFinish (void)
 
float getBottomWheelValue (void) const
 
void setBottomWheelValue (const float value)
 
virtual void rightWheelStart (void)
 
virtual void rightWheelFinish (void)
 
float getRightWheelValue (void) const
 
void setRightWheelValue (const float value)
 
void setLeftWheelString (const char *const name)
 
QWidget * getLeftWheelLabelWidget (void) const
 
void setBottomWheelString (const char *const name)
 
QWidget * getBottomWheelLabelWidget (void) const
 
void setRightWheelString (const char *const name)
 
const char * getRightWheelString () const
 
QWidget * getRightWheelLabelWidget (void) const
 
- Protected Member Functions inherited from SoQtViewer
 SoQtViewer (QWidget *parent, const char *name, SbBool embed, Type type, SbBool build)
 
 ~SoQtViewer ()
 
SbBool isSeekMode (void) const
 
SbBool seekToPoint (const SbVec2s screenpos)
 
void seekToPoint (const SbVec3f &scenepos)
 
virtual void computeSeekFinalOrientation (void)
 
void interactiveCountInc (void)
 
void interactiveCountDec (void)
 
int getInteractiveCount (void) const
 
void setSeekDistance (const float distance)
 
float getSeekDistance (void) const
 
void setSeekValueAsPercentage (const SbBool on)
 
SbBool isSeekValuePercentage (void) const
 
void addSuperimposition (SoNode *scene)
 
void removeSuperimposition (SoNode *scene)
 
void setSuperimpositionEnabled (SoNode *scene, const SbBool enable)
 
SbBool getSuperimpositionEnabled (SoNode *scene) const
 
- Protected Member Functions inherited from SoQtRenderArea
 SoQtRenderArea (QWidget *parent, const char *name, SbBool embed, SbBool mouseInput, SbBool keyboardInput, SbBool build)
 
virtual void redraw (void)
 
virtual void redrawOverlay (void)
 
virtual void actualOverlayRedraw (void)
 
virtual void processEvent (QEvent *event)
 
virtual void initGraphic (void)
 
virtual void initOverlayGraphic (void)
 
virtual void widgetChanged (QWidget *widget)
 
QWidget * buildWidget (QWidget *parent)
 
virtual SbBool glScheduleRedraw (void)
 
- Protected Member Functions inherited from SoQtGLWidget
 SoQtGLWidget (QWidget *const parent=NULL, const char *const name=NULL, const SbBool embed=TRUE, const int glmodes=SO_GL_RGB, const SbBool build=TRUE)
 
 ~SoQtGLWidget ()
 
QWidget * buildWidget (QWidget *parent)
 
void setGLSize (const SbVec2s size)
 
SbVec2s getGLSize (void) const
 
float getGLAspectRatio (void) const
 
void setGlxSize (const SbVec2s size)
 
SbVec2s getGlxSize (void) const
 
float getGlxAspectRatio (void) const
 
void setStereoBuffer (SbBool flag)
 
SbBool isStereoBuffer (void) const
 
SbBool isRGBMode (void)
 
void glLockNormal (void)
 
void glUnlockNormal (void)
 
void glLockOverlay (void)
 
void glUnlockOverlay (void)
 
void glSwapBuffers (void)
 
void glFlushBuffer (void)
 
- Protected Member Functions inherited from SoQtComponent
 SoQtComponent (QWidget *const parent=NULL, const char *const name=NULL, const SbBool embed=TRUE)
 
void setClassName (const char *const name)
 
void setBaseWidget (QWidget *widget)
 
void registerWidget (QWidget *widget)
 
void unregisterWidget (QWidget *widget)
 
void addVisibilityChangeCallback (SoQtComponentVisibilityCB *const func, void *const user=NULL)
 
void removeVisibilityChangeCallback (SoQtComponentVisibilityCB *const func, void *const user=NULL)
 

Additional Inherited Members

- Public Types inherited from SoQtFullViewer
enum  BuildFlag { BUILD_NONE = 0x00, BUILD_DECORATION = 0x01, BUILD_POPUP = 0x02, BUILD_ALL = (BUILD_DECORATION | BUILD_POPUP) }
 
- Public Types inherited from SoQtViewer
enum  Type { BROWSER, EDITOR }
 
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, VIEW_WIREFRAME_OVERLAY
}
 
enum  DrawType { STILL = 0, INTERACTIVE }
 
enum  BufferType { BUFFER_SINGLE, BUFFER_DOUBLE, BUFFER_INTERACTIVE }
 
enum  AutoClippingStrategy { VARIABLE_NEAR_PLANE, CONSTANT_NEAR_PLANE }
 
enum  StereoType {
  STEREO_NONE, STEREO_ANAGLYPH, STEREO_QUADBUFFER, STEREO_INTERLEAVED_ROWS,
  STEREO_INTERLEAVED_COLUMNS
}
 
- Static Public Member Functions inherited from SoQtRenderArea
static uint32_t getDefaultRedrawPriority (void)
 
- Static Public Member Functions inherited from SoQtComponent
static void setWidgetCursor (QWidget *w, const SoQtCursor &cursor)
 
static SoQtComponentgetComponent (QWidget *widget)
 
static void initClasses (void)
 
- Static Public Member Functions inherited from SoQtObject
static void initClass (void)
 
static SoType getClassTypeId (void)
 
static void init (void)
 
- Protected Attributes inherited from SoQtFullViewer
QWidget * leftWheel
 
QWidget * rightWheel
 
QWidget * bottomWheel
 
QWidget * leftDecoration
 
QWidget * rightDecoration
 
QWidget * bottomDecoration
 
QWidget * leftWheelLabel
 
char * leftWheelStr
 
float leftWheelVal
 
QWidget * rightWheelLabel
 
char * rightWheelStr
 
float rightWheelVal
 
QWidget * bottomWheelLabel
 
char * bottomWheelStr
 
float bottomWheelVal
 
SoQtPopupMenu * prefmenu
 
- Protected Attributes inherited from SoQtGLWidget
SbBool waitForExpose
 
SbBool drawToFrontBuffer
 

Detailed Description

The SoQtFlyViewer class implements controls for moving the camera in a "flying" motion.

Controls:

  • Left mouse button increases the speed.

  • Middle mouse button decreases the speed.

  • Left and middle mouse button together sets the speed to zero.

  • "s" puts the viewer in seek mode. Click some geometry with the left mouse button to start the seek zoom animation. (Hitting "s" again before clicking will cancel the seek operation.)

  • "u" puts the viewer in up-vector pick mode. Click some geometry with the left mouse button to set the camera's up-vector to the normal vector of the face you pick. (Hitting "u" again before clicking will cancel the pick operation.)

  • The control key stops the flying and lets you tilt the camera by moving the pointer.

Constructor & Destructor Documentation

◆ SoQtFlyViewer() [1/2]

SoQtFlyViewer::SoQtFlyViewer ( QWidget *  parent = NULL,
const char *  name = NULL,
SbBool  embed = TRUE,
SoQtFullViewer::BuildFlag  flag = BUILD_ALL,
SoQtViewer::Type  type = BROWSER 
)

Public constructor.

◆ ~SoQtFlyViewer()

SoQtFlyViewer::~SoQtFlyViewer ( )

Virtual constructor.

◆ SoQtFlyViewer() [2/2]

SoQtFlyViewer::SoQtFlyViewer ( QWidget *  parent,
const char *const  name,
SbBool  embed,
SoQtFullViewer::BuildFlag  flag,
SoQtViewer::Type  type,
SbBool  build 
)
protected

Protected constructor, used by viewer components derived from the SoQtFlyViewer.

Member Function Documentation

◆ setViewing()

void SoQtFlyViewer::setViewing ( SbBool  enable)
virtual

Set view mode.

If the view mode is on, user events will be caught and used to influence the camera position / orientation. If view mode is off, all events in the viewer canvas (like for instance keypresses or mouseclicks and -movements) will be passed along to the scene graph.

Default is to have the view mode active.

See also
isViewing()

Reimplemented from SoQtFullViewer.

◆ viewAll()

void SoQtFlyViewer::viewAll ( void  )
virtual

Reposition the current camera so we can see the complete scene.

Reimplemented from SoQtViewer.

◆ resetToHomePosition()

void SoQtFlyViewer::resetToHomePosition ( void  )
virtual

Restore the saved camera settings.

See also
saveHomePosition()

Reimplemented from SoQtConstrainedViewer.

◆ setCamera()

void SoQtFlyViewer::setCamera ( SoCamera cam)
virtual

Set the camera we want the viewer to manipulate when interacting with the viewer controls.

The camera passed in as an argument to this method must already be part of the viewer's scenegraph. You do not inject viewpoint cameras to the viewer with this method.

You should rather insert a camera into the scene graph first (if necessary, often one will be present already), then register it as the camera used by the viewer controls with this method.

If the application code doesn't explicitly set up a camera through this method, the viewer will automatically scan through the scenegraph to find a camera to use. If no camera is available in the scenegraph at all, it will set up it's own camera.

See also
getCamera()

Reimplemented from SoQtConstrainedViewer.

◆ setCursorEnabled()

void SoQtFlyViewer::setCursorEnabled ( SbBool  on)
virtual

Set whether or not the mouse cursor representation should be visible in the viewer canvas.

Default value is on.

See also
isCursorEnabled()

Reimplemented from SoQtViewer.

◆ setCameraType()

void SoQtFlyViewer::setCameraType ( SoType  t)
virtual

When the viewer has to make its own camera as a result of the graph passed to setSceneGraph() not containing any camera nodes, this call can be made in advance to decide which type the camera will be of.

Default is to use an SoPerspectiveCamera.

If this method is called when there is a scene graph and a camera already set up, it will delete the old camera and set up a camera with the new type if the t type is different from that of the current camera.

See also
getCameraType()

Reimplemented from SoQtViewer.

◆ getDefaultWidgetName()

const char * SoQtFlyViewer::getDefaultWidgetName ( void  ) const
protectedvirtual

This method returns the default name of a component widget class.

It should be overridden by derived non-abstract classes for the topmost widget in the component to have a proper name.

Reimplemented from SoQtRenderArea.

◆ getDefaultTitle()

const char * SoQtFlyViewer::getDefaultTitle ( void  ) const
protectedvirtual

This method returns the default window caption string of the component.

It should be overridden by derived non-abstract classes so the window and popup menu will get a proper title.

Reimplemented from SoQtRenderArea.

◆ getDefaultIconTitle()

const char * SoQtFlyViewer::getDefaultIconTitle ( void  ) const
protectedvirtual

This method returns the default icon title of the component.

It should be overridden by derived non-abstract classes so icons will get proper titles.

Reimplemented from SoQtRenderArea.

◆ processSoEvent()

SbBool SoQtFlyViewer::processSoEvent ( const SoEvent *const  event)
protectedvirtual

Toolkit-native events are attempted converted to Coin-generic events in the SoQtRenderArea::processEvent() method. If this succeeds, they are forwarded to this method.

This is a virtual method, and is overridden in it's subclasses to catch events of particular interest to the viewer classes, for instance.

Return TRUE iff the event was processed. If not it should be passed on further up in the inheritance hierarchy by the caller. This last point is extremely important to take note of if you are expanding the toolkit with your own viewer class.

This method is not part of the original SGI InventorXt API. Note that you can still override the toolkit-native processEvent() method instead of this "generic" method.

Reimplemented from SoQtFullViewer.

◆ setSeekMode()

void SoQtFlyViewer::setSeekMode ( SbBool  enable)
protectedvirtual

Put the viewer in or out of "waiting-to-seek" mode.

If the user performs a mouse button click when the viewer is in "waiting-to-seek" mode, the camera will be repositioned so the camera focal point lies on the point of the geometry under the mouse cursor.

See also
isSeekMode(), setDetailSeek()

Reimplemented from SoQtViewer.

◆ actualRedraw()

void SoQtFlyViewer::actualRedraw ( void  )
protectedvirtual

This method instantly redraws the normal (non-overlay) scenegraph by calling SoSceneManager::render().

Subclasses may override this method to add their own rendering before or after Coin renders it's scenegraph.

The following is a complete example that demonstrates one way of adding both a background image and foreground (overlay) geometry to the "normal" rendering:

// This example shows how to put a permanent background image on
// your viewer canvas, below the 3D graphics, plus overlay
// foreground geometry. Written by mortene.
// Copyright Kongsberg Oil & Gas Technologies 2002.
// *************************************************************************
#include <Inventor/Qt/SoQt.h>
#include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
#include <Inventor/nodes/SoBaseColor.h>
#include <Inventor/nodes/SoCone.h>
#include <Inventor/nodes/SoCube.h>
#include <Inventor/nodes/SoImage.h>
#include <Inventor/nodes/SoLightModel.h>
#include <Inventor/nodes/SoOrthographicCamera.h>
#include <Inventor/nodes/SoRotationXYZ.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoTranslation.h>
#include <GL/gl.h>
// *************************************************************************
class MyExaminerViewer : public SoQtExaminerViewer {
public:
MyExaminerViewer(QWidget* parent, const char * filename);
~MyExaminerViewer();
protected:
virtual void actualRedraw(void);
private:
SoSeparator * bckgroundroot;
SoSeparator * foregroundroot;
SoRotationXYZ * arrowrotation;
};
MyExaminerViewer::MyExaminerViewer(QWidget* parent, const char * filename)
{
// Coin should not clear the pixel-buffer, so the background image
// is not removed.
this->setClearBeforeRender(FALSE, TRUE);
// Set up background scenegraph with image in it.
this->bckgroundroot = new SoSeparator;
this->bckgroundroot->ref();
cam->position = SbVec3f(0, 0, 1);
cam->height = 1;
// SoImage will be at z==0.0.
cam->nearDistance = 0.5;
cam->farDistance = 1.5;
SoImage * img = new SoImage;
img->filename = filename;
this->bckgroundroot->addChild(cam);
this->bckgroundroot->addChild(img);
// Set up foreground, overlayed scenegraph.
this->foregroundroot = new SoSeparator;
this->foregroundroot->ref();
bc->rgb = SbColor(1, 1, 0);
cam->position = SbVec3f(0, 0, 5);
cam->height = 10;
cam->nearDistance = 0;
cam->farDistance = 10;
const double ARROWSIZE = 2.0;
posit->translation = SbVec3f(-2.5 * ARROWSIZE, 1.5 * ARROWSIZE, 0);
arrowrotation = new SoRotationXYZ;
arrowrotation->axis = SoRotationXYZ::Z;
SoTranslation * offset = new SoTranslation;
offset->translation = SbVec3f(ARROWSIZE/2.0, 0, 0);
SoCube * cube = new SoCube;
cube->width = ARROWSIZE;
cube->height = ARROWSIZE/15.0;
this->foregroundroot->addChild(cam);
this->foregroundroot->addChild(lm);
this->foregroundroot->addChild(bc);
this->foregroundroot->addChild(posit);
this->foregroundroot->addChild(arrowrotation);
this->foregroundroot->addChild(offset);
this->foregroundroot->addChild(cube);
}
MyExaminerViewer::~MyExaminerViewer()
{
this->bckgroundroot->unref();
this->foregroundroot->unref();
}
void
MyExaminerViewer::actualRedraw(void)
{
// Must set up the OpenGL viewport manually, as upon resize
// operations, Coin won't set it up until the SoGLRenderAction is
// applied again. And since we need to do glClear() before applying
// the action..
const SbViewportRegion vp = this->getViewportRegion();
glViewport(origin[0], origin[1], size[0], size[1]);
const SbColor col = this->getBackgroundColor();
glClearColor(col[0], col[1], col[2], 0.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
// Render our scenegraph with the image.
SoGLRenderAction * glra = this->getGLRenderAction();
glra->apply(this->bckgroundroot);
// Render normal scenegraph.
// Increase arrow angle with 1/1000 every frame.
arrowrotation->angle = arrowrotation->angle.getValue() + (0.001 / M_PI * 180);
// Render overlay front scenegraph.
glClear(GL_DEPTH_BUFFER_BIT);
glra->apply(this->foregroundroot);
}
// *************************************************************************
int
main(int argc, char ** argv)
{
if (argc != 2) {
(void)fprintf(stderr, "\n\n\tUsage: %s <image-filename>\n\n", argv[0]);
exit(1);
}
QWidget* window = SoQt::init(argv[0]);
MyExaminerViewer * viewer = new MyExaminerViewer(window, argv[1]);
viewer->setSceneGraph(new SoCone);
viewer->show();
SoQt::show(window);
delete viewer;
return 0;
}
// *************************************************************************

Reimplemented from SoQtViewer.

◆ rightWheelMotion()

void SoQtFlyViewer::rightWheelMotion ( float  value)
protectedvirtual

Called repeatedly as the user drags the thumbwheel in the right frame. Override this method in subclassed viewers to provide your own functionality on the thumbwheel.

See also
rightWheelStart(), rightWheelFinish()
leftWheelStart(), bottomWheelStart()

Reimplemented from SoQtFullViewer.

◆ afterRealizeHook()

void SoQtFlyViewer::afterRealizeHook ( void  )
protectedvirtual

A function "hook" / callback invoked just after the window for the component has been realized.

Override this if you need specific initialization for your own component or viewer class to happen right after it has been made visible, but remember to call upwards in the inheritance hierarchy:

void
MyLittleViewer::afterRealizeHook(void)
{
<superclass>::afterRealizeHook();
// [own initialization here]
}

Reimplemented from SoQtRenderArea.


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