.TH "SoQtFlyViewer" 3 "Fri Dec 29 2017" "Version 1.6.0a" "SoQt" \" -*- nroff -*- .ad l .nh .SH NAME SoQtFlyViewer \- The \fBSoQtFlyViewer\fP class implements controls for moving the camera in a 'flying' motion\&. .PP Controls: .SH SYNOPSIS .br .PP .PP \fC#include \fP .PP Inherits \fBSoQtConstrainedViewer\fP\&. .SS "Public Member Functions" .in +1c .ti -1c .RI "\fBSoQtFlyViewer\fP (QWidget *parent=NULL, const char *name=NULL, SbBool embed=TRUE, \fBSoQtFullViewer::BuildFlag\fP flag=\fBBUILD_ALL\fP, \fBSoQtViewer::Type\fP type=\fBBROWSER\fP)" .br .ti -1c .RI "\fB~SoQtFlyViewer\fP ()" .br .ti -1c .RI "virtual void \fBsetViewing\fP (SbBool enable)" .br .ti -1c .RI "virtual void \fBviewAll\fP (void)" .br .ti -1c .RI "virtual void \fBresetToHomePosition\fP (void)" .br .ti -1c .RI "virtual void \fBsetCamera\fP (SoCamera *camera)" .br .ti -1c .RI "virtual void \fBsetCursorEnabled\fP (SbBool enable)" .br .ti -1c .RI "virtual void \fBsetCameraType\fP (SoType type)" .br .in -1c .SS "Protected Member Functions" .in +1c .ti -1c .RI "\fBSoQtFlyViewer\fP (QWidget *parent, const char *const name, SbBool embed, \fBSoQtFullViewer::BuildFlag\fP flag, \fBSoQtViewer::Type\fP type, SbBool build)" .br .ti -1c .RI "virtual const char * \fBgetDefaultWidgetName\fP (void) const" .br .ti -1c .RI "virtual const char * \fBgetDefaultTitle\fP (void) const" .br .ti -1c .RI "virtual const char * \fBgetDefaultIconTitle\fP (void) const" .br .ti -1c .RI "virtual SbBool \fBprocessSoEvent\fP (const SoEvent *const event)" .br .ti -1c .RI "virtual void \fBsetSeekMode\fP (SbBool enable)" .br .ti -1c .RI "virtual void \fBactualRedraw\fP (void)" .br .ti -1c .RI "virtual void \fBrightWheelMotion\fP (float value)" .br .ti -1c .RI "virtual void \fBafterRealizeHook\fP (void)" .br .in -1c .SS "Friends" .in +1c .ti -1c .RI "class \fBSoQtFlyViewerP\fP" .br .in -1c .SS "Additional Inherited Members" .SH "Detailed Description" .PP The \fBSoQtFlyViewer\fP class implements controls for moving the camera in a 'flying' motion\&. .PP Controls: .PD 0 .IP "\(bu" 2 Left mouse button increases the speed\&. .PP .IP "\(bu" 2 Middle mouse button decreases the speed\&. .PP .IP "\(bu" 2 Left and middle mouse button together sets the speed to zero\&. .PP .IP "\(bu" 2 '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\&.) .PP .IP "\(bu" 2 '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\&.) .PP .IP "\(bu" 2 The control key stops the flying and lets you tilt the camera by moving the pointer\&. .PP .PP .SH "Constructor & Destructor Documentation" .PP .SS "SoQtFlyViewer::SoQtFlyViewer (QWidget * parent = \fCNULL\fP, const char * name = \fCNULL\fP, SbBool embed = \fCTRUE\fP, \fBSoQtFullViewer::BuildFlag\fP flag = \fC\fBBUILD_ALL\fP\fP, \fBSoQtViewer::Type\fP type = \fC\fBBROWSER\fP\fP)" Public constructor\&. .SS "SoQtFlyViewer::~SoQtFlyViewer ()" Virtual constructor\&. .PP References SoQtViewer::removeSuperimposition()\&. .SS "SoQtFlyViewer::SoQtFlyViewer (QWidget * parent, const char *const name, SbBool embed, \fBSoQtFullViewer::BuildFlag\fP flag, \fBSoQtViewer::Type\fP type, SbBool build)\fC [protected]\fP" Protected constructor, used by viewer components derived from the \fBSoQtFlyViewer\fP\&. .SH "Member Function Documentation" .PP .SS "void SoQtFlyViewer::setViewing (SbBool enable)\fC [virtual]\fP" Set view mode\&. .PP 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\&. .PP Default is to have the view mode active\&. .PP \fBSee also:\fP .RS 4 \fBisViewing()\fP .RE .PP .PP Reimplemented from \fBSoQtFullViewer\fP\&. .PP References SoQtViewer::isViewing(), SoQtRenderArea::scheduleRedraw(), and SoQtViewer::setSuperimpositionEnabled()\&. .SS "void SoQtFlyViewer::viewAll (void)\fC [virtual]\fP" Reposition the current camera so we can see the complete scene\&. .PP Reimplemented from \fBSoQtViewer\fP\&. .SS "void SoQtFlyViewer::resetToHomePosition (void)\fC [virtual]\fP" Restore the saved camera settings\&. .PP \fBSee also:\fP .RS 4 \fBsaveHomePosition()\fP .RE .PP .PP Reimplemented from \fBSoQtConstrainedViewer\fP\&. .SS "void SoQtFlyViewer::setCamera (SoCamera * cam)\fC [virtual]\fP" Set the camera we want the viewer to manipulate when interacting with the viewer controls\&. .PP The camera passed in as an argument to this method \fImust\fP already be part of the viewer's scenegraph\&. You do \fInot\fP inject viewpoint cameras to the viewer with this method\&. .PP 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\&. .PP 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\&. .PP \fBSee also:\fP .RS 4 \fBgetCamera()\fP .RE .PP .PP Reimplemented from \fBSoQtConstrainedViewer\fP\&. .SS "void SoQtFlyViewer::setCursorEnabled (SbBool on)\fC [virtual]\fP" Set whether or not the mouse cursor representation should be visible in the viewer canvas\&. .PP Default value is on\&. .PP \fBSee also:\fP .RS 4 \fBisCursorEnabled()\fP .RE .PP .PP Reimplemented from \fBSoQtViewer\fP\&. .SS "void SoQtFlyViewer::setCameraType (SoType t)\fC [virtual]\fP" When the viewer has to make its own camera as a result of the graph passed to \fBsetSceneGraph()\fP not containing any camera nodes, this call can be made in advance to decide which type the camera will be of\&. .PP Default is to use an SoPerspectiveCamera\&. .PP 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 \fIt\fP type is different from that of the current camera\&. .PP \fBSee also:\fP .RS 4 \fBgetCameraType()\fP .RE .PP .PP Reimplemented from \fBSoQtViewer\fP\&. .SS "const char * SoQtFlyViewer::getDefaultWidgetName (void) const\fC [protected]\fP, \fC [virtual]\fP" This method returns the default name of a component widget class\&. .PP It should be overridden by derived non-abstract classes for the topmost widget in the component to have a proper name\&. .PP Reimplemented from \fBSoQtRenderArea\fP\&. .SS "const char * SoQtFlyViewer::getDefaultTitle (void) const\fC [protected]\fP, \fC [virtual]\fP" This method returns the default window caption string of the component\&. .PP It should be overridden by derived non-abstract classes so the window and popup menu will get a proper title\&. .PP Reimplemented from \fBSoQtRenderArea\fP\&. .SS "const char * SoQtFlyViewer::getDefaultIconTitle (void) const\fC [protected]\fP, \fC [virtual]\fP" This method returns the default icon title of the component\&. .PP It should be overridden by derived non-abstract classes so icons will get proper titles\&. .PP Reimplemented from \fBSoQtRenderArea\fP\&. .SS "SbBool SoQtFlyViewer::processSoEvent (const SoEvent *const event)\fC [protected]\fP, \fC [virtual]\fP" Toolkit-native events are attempted converted to Coin-generic events in the \fBSoQtRenderArea::processEvent()\fP method\&. If this succeeds, they are forwarded to this method\&. .PP This is a virtual method, and is overridden in it's subclasses to catch events of particular interest to the viewer classes, for instance\&. .PP Return \fCTRUE\fP 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\&. .PP This method is not part of the original SGI InventorXt API\&. Note that you can still override the toolkit-native \fBprocessEvent()\fP method instead of this 'generic' method\&. .PP Reimplemented from \fBSoQtFullViewer\fP\&. .PP References SoQtViewer::isSeekMode(), and SoQtViewer::isViewing()\&. .SS "void SoQtFlyViewer::setSeekMode (SbBool enable)\fC [protected]\fP, \fC [virtual]\fP" Put the viewer in or out of 'waiting-to-seek' mode\&. .PP 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\&. .PP \fBSee also:\fP .RS 4 \fBisSeekMode()\fP, \fBsetDetailSeek()\fP .RE .PP .PP Reimplemented from \fBSoQtViewer\fP\&. .PP References SoQtViewer::isSeekMode()\&. .SS "void SoQtFlyViewer::actualRedraw (void)\fC [protected]\fP, \fC [virtual]\fP" This method instantly redraws the normal (non-overlay) scenegraph by calling SoSceneManager::render()\&. .PP Subclasses may override this method to add their own rendering before or after Coin renders it's scenegraph\&. .PP The following is a complete example that demonstrates one way of adding both a background image and foreground (overlay) geometry to the 'normal' rendering: .PP .PP .nf // 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 #include #include #include #include #include #include #include #include #include #include #include // ************************************************************************* 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 \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; } // ************************************************************************* .fi .PP .PP Reimplemented from \fBSoQtViewer\fP\&. .PP References SoQtViewer::getCamera(), SoQtViewer::isViewing(), and SoQtRenderArea::scheduleRedraw()\&. .SS "void SoQtFlyViewer::rightWheelMotion (float value)\fC [protected]\fP, \fC [virtual]\fP" 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\&. .PP \fBSee also:\fP .RS 4 \fBrightWheelStart()\fP, \fBrightWheelFinish()\fP .PP \fBleftWheelStart()\fP, \fBbottomWheelStart()\fP .RE .PP .PP Reimplemented from \fBSoQtFullViewer\fP\&. .PP References SoQtFullViewer::getRightWheelValue()\&. .SS "void SoQtFlyViewer::afterRealizeHook (void)\fC [protected]\fP, \fC [virtual]\fP" A function 'hook' / callback invoked just after the window for the component has been realized\&. .PP 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: .PP .PP .nf void MyLittleViewer::afterRealizeHook(void) { ::afterRealizeHook(); // [own initialization here] } .fi .PP .PP Reimplemented from \fBSoQtRenderArea\fP\&. .SH "Author" .PP Generated automatically by Doxygen for SoQt from the source code\&.