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

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

Inheritance diagram for SoQtFlyViewer:

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 SbVec3f &	getUpDirection (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
SoCamera *	getCamera (void) const

SoType	getCameraType (void) const

virtual void	toggleCameraType (void)

virtual void	setHeadlight (SbBool enable)

SbBool	isHeadlight (void) const

SoDirectionalLight *	getHeadlight (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 SbColor &	getWireframeOverlayColor (void) const

virtual void	setDoubleBuffer (const SbBool enable)

virtual void	setSceneGraph (SoNode *root)

virtual SoNode *	getSceneGraph (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)

SoNode *	getOverlaySceneGraph (void)

void	setBackgroundColor (const SbColor &color)

const SbColor &	getBackgroundColor (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 SbViewportRegion &	getViewportRegion (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)

SoSceneManager *	getSceneManager (void) const

void	setOverlaySceneManager (SoSceneManager *manager)

SoSceneManager *	getOverlaySceneManager (void) const

void	setGLRenderAction (SoGLRenderAction *action)

SoGLRenderAction *	getGLRenderAction (void) const

void	setOverlayGLRenderAction (SoGLRenderAction *action)

SoGLRenderAction *	getOverlayGLRenderAction (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 SoQtComponent *	getComponent (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)
  : SoQtExaminerViewer(parent)
{
  // 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();
  SoOrthographicCamera * cam = new SoOrthographicCamera;
  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->vertAlignment = SoImage::HALF;
  img->horAlignment = SoImage::CENTER;
  img->filename = filename;
  this->bckgroundroot->addChild(cam);
  this->bckgroundroot->addChild(img);
  // Set up foreground, overlayed scenegraph.
  this->foregroundroot = new SoSeparator;
  this->foregroundroot->ref();
  SoLightModel * lm = new SoLightModel;
  lm->model = SoLightModel::BASE_COLOR;
  SoBaseColor * bc = new SoBaseColor;
  bc->rgb = SbColor(1, 1, 0);
  cam = new SoOrthographicCamera;
  cam->position = SbVec3f(0, 0, 5);
  cam->height = 10;
  cam->nearDistance = 0;
  cam->farDistance = 10;
  const double ARROWSIZE = 2.0;
  SoTranslation * posit = new SoTranslation;
  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();
  SbVec2s origin = vp.getViewportOriginPixels();
  SbVec2s size = vp.getViewportSizePixels();
  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.
  SoQtExaminerViewer::actualRedraw();
  // 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);
  SoQt::mainLoop();
  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:

SoQtFlyViewer.h
SoQtFlyViewer.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ SoQtFlyViewer() [1/2]

◆ ~SoQtFlyViewer()

◆ SoQtFlyViewer() [2/2]

Member Function Documentation

◆ setViewing()

◆ viewAll()

◆ resetToHomePosition()

◆ setCamera()

◆ setCursorEnabled()

◆ setCameraType()

◆ getDefaultWidgetName()

◆ getDefaultTitle()

◆ getDefaultIconTitle()

◆ processSoEvent()

◆ setSeekMode()

◆ actualRedraw()

◆ rightWheelMotion()

◆ afterRealizeHook()