SoXtRenderArea(3IV)
SoXtRenderArea (SoXtRA) - Xt Component for rendering Inventor scene graphs
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NAME SoXtRenderArea (SoXtRA) - Xt Component for rendering Inventor scene graphs INHERITS FROM SoXtComponent > SoXtGLWidget > SoXtRenderArea SYNOPSIS #include <Inventor_c/Xt/SoXtRenderArea.h> typedef SbBool SoXtRenderAreaEventCB(void *userData, XAnyEvent *anyevent) typedef SoXtRenderArea SoXtRA #define SoXtRACreateStd(parent, name) SoXtRACreate(parent, name, TRUE, TRUE, TRUE) Functions from class SoXtRenderArea: SoXtRenderArea * SoXtRACreate(Widget parent = NULL, const char *name = NULL, SbBool buildInsideParent = TRUE, SbBool getMouseInput = TRUE, SbBool getKeyboardInput = TRUE) void SoXtRADelete(SoXtRA *this) void SoXtRASetScene(SoXtRA *this, SoNode *newScene) SoNode * SoXtRAGetScene(SoXtRA *this) void SoXtRASetOverScene(SoXtRA *this, SoNode *newScene) SoNode * SoXtRAGetOverScene(SoXtRA *this) void SoXtRARegisterDevice(SoXtRA *this, SoXtDevice *) void SoXtRAUnregisterDevice(SoXtRA *this, SoXtDevice *) void SoXtRASetBkgCol(SoXtRA *this, const SbColor *c) const SbColor * SoXtRAGetBkgCol(const SoXtRA *this) void SoXtRASetBkgInd(SoXtRA *this, int index) int SoXtRAGetBkgInd(const SoXtRA *this) void SoXtRASetOverBkgInd(SoXtRA *this, int index) int SoXtRAGetOverBkgInd(const SoXtRA *this) void SoXtRASetColMap(SoXtRA *this, int startIndex, int num, const SbColor *colors) void SoXtRASetOverColMap(SoXtRA *this, int startIndex, int num, const SbColor *colors) void SoXtRASetVPReg(SoXtRA *this, const SbViewportRegion *newRegion) const SbViewportRegion * SoXtRAGetVPReg(const SoXtRA *this) void SoXtRASetTranspType(SoXtRA *this, SoGLRenderAction::TransparencyType type) SoGLRenderAction::TransparencyType SoXtRAGetTranspType(const SoXtRA *this) void SoXtRASetAntialiasing(SoXtRA *this, SbBool smoothing, int numPasses) void SoXtRAGetAntialiasing(const SoXtRA *this, SbBool *smoothing, int *numPasses) void SoXtRASetClearBeforeRender(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsClearBeforeRender(const SoXtRA *this) void SoXtRASetClearBeforeOverRender(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsClearBeforeOverRender(const SoXtRA *this) void SoXtRASetAutoRedraw(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsAutoRedraw(const SoXtRA *this) void SoXtRASetRedrawPriority(SoXtRA *this, uint32_t priority) uint32_t SoXtRAGetRedrawPriority(const SoXtRA *this) uint32_t SoXtRAGetDefaultRedrawPriority() void SoXtRARender(SoXtRA *this) void SoXtRARenderOverlay(SoXtRA *this) void SoXtRAScheduleRedraw(SoXtRA *this) void SoXtRAScheduleOverRedraw(SoXtRA *this) void SoXtRARedrawOnSelChange(SoXtRA *this, SoSelection *s) void SoXtRARedrawOverOnSelChange(SoXtRA *this, SoSelection *s) void SoXtRASetEvCB(SoXtRA *this, SoXtRenderAreaEventCB *fcn, void *userData = NULL) void SoXtRASetGLRenderAct(SoXtRA *this, SoGLRenderAction *ra) SoGLRenderAction * SoXtRAGetGLRenderAct(const SoXtRA *this) void SoXtRASetOverGLRenderAct(SoXtRA *this, SoGLRenderAction *ra) SoGLRenderAction * SoXtRAGetOverGLRenderAct(const SoXtRA *this) void SoXtRASetSceneMgr(SoXtRA *this, SoSceneManager *sm) SoSceneManager * SoXtRAGetSceneMgr(const SoXtRA *this) void SoXtRASetOverSceneMgr(SoXtRA *this, SoSceneManager *sm) SoSceneManager * SoXtRAGetOverSceneMgr(const SoXtRA *this) Functions from class SoXtGLWidget: void SoXtRASetBorder(SoXtRA *this, SbBool onOrOff) SbBool SoXtRAIsBorder(const SoXtRA *this) void SoXtRASetDblBuf(SoXtRA *this, SbBool onOrOff) SbBool SoXtRAIsDblBuf(SoXtRA *this) Window SoXtRAGetNormWin(SoXtRA *this) Window SoXtRAGetOverWin(SoXtRA *this) GLXContext SoXtRAGetNormCtx(SoXtRA *this) GLXContext SoXtRAGetOverCtx(SoXtRA *this) Widget SoXtRAGetNormWidget(SoXtRA *this) Widget SoXtRAGetOverWidget(SoXtRA *this) void SoXtRASetNormVis(SoXtRA *this, XVisualInfo *vis) XVisualInfo * SoXtRAGetNormVis(SoXtRA *this) void SoXtRASetOverVis(SoXtRA *this, XVisualInfo *vis) XVisualInfo * SoXtRAGetOverVis(SoXtRA *this) void SoXtRASetDrwFrontBuf(SoXtRA *this, SbBool enableFlag) SbBool SoXtRAIsDrwFrontBuf(const SoXtRA *this) Functions from class SoXtComponent: void SoXtRAShow(SoXtRA *this) void SoXtRAHide(SoXtRA *this) SbBool SoXtRAIsVisible(SoXtRA *this) Widget SoXtRAGetWidget(const SoXtRA *this) SbBool SoXtRAIsTopLevelShell(const SoXtRA *this) Widget SoXtRAGetShellWidget(const SoXtRA *this) Widget SoXtRAGetParentWidget(const SoXtRA *this) void SoXtRASetSize(SoXtRA *this, const SbVec2s *size) SbVec2s SoXtRAGetSize(SoXtRA *this) Display * SoXtRAGetDisplay(SoXtRA *this) void SoXtRASetTitle(SoXtRA *this, const char *newTitle) const char * SoXtRAGetTitle(const SoXtRA *this) void SoXtRASetIconTitle(SoXtRA *this, const char *newIconTitle) const char * SoXtRAGetIconTitle(const SoXtRA *this) void SoXtRASetWinCloseCB(SoXtRA *this, SoXtComponentCB *func, void *data = NULL) SoXtComponent * SoXtRAGetComp(Widget w) const char * SoXtRAGetWidgetName(const SoXtRA *this) const char * SoXtRAGetClassName(const SoXtRA *this) DESCRIPTION This class provides Inventor rendering and event handling inside a GLX Motif widget. There is a routine to specify the scene to render. The scene is automatically rendered whenever anything under it changes (a data sensor is attached to the root of the scene), unless explicitly told not to do so (manual redraws). Users can also set Inventor rendering attributes such as the transparency type, antialiasing on or off, etc. This class employs an SoSceneManager to manage rendering and event handling. X events that occur in the render area can be handled by the application, by the viewer (if this is really a viewer) or by the nodes in the scene graph. When an event occurs, it is first passed to the application event callback function registered with the setEventCallback() method on SoXtRenderArea. If this function does not exist or returns FALSE, the X event is either used directly by the viewer or translated to an SoEvent for further scene graph processing. If the viewer does not handle the event, and an overlay scene graph exists, the SoEvent is sent to that scene graph by way of an SoHandleEventAction. If no node in the overlay scene graph handles the event (i.e., calls setHandled() on the SoHandleEventAction), the SoEvent is passed to the normal scene graph in the same manner. FUNCTIONS SoXtRenderArea * SoXtRACreate(Widget parent = NULL, const char *name = NULL, SbBool buildInsideParent = TRUE, SbBool getMouseInput = TRUE, SbBool getKeyboardInput = TRUE) void SoXtRADelete(SoXtRA *this) Constructor which is passed arguments which tell it whether to register the mouse and keyboard devices by default (SoXtMouse and SoXtKeyboard). For a constructor short cut look at the SoXtRACreateStd #define. void SoXtRASetScene(SoXtRA *this, SoNode *newScene) SoNode * SoXtRAGetScene(SoXtRA *this) Set/get the scene graph to be rendered in this component's window. void SoXtRASetOverScene(SoXtRA *this, SoNode *newScene) SoNode * SoXtRAGetOverScene(SoXtRA *this) Sets/gets the scene graph to render in the overlay bit planes. Note: since the overlay bit planes are in color index mode, single buffer with a limited number of colors, the user should limit rendering in the overlay planes to simple objects. Typically rendering in color index mode is done using the SoColorIndex node with a SoLightModel set to BASE_COLOR. void SoXtRARegisterDevice(SoXtRA *this, SoXtDevice *) void SoXtRAUnregisterDevice(SoXtRA *this, SoXtDevice *) Register/unregister interest in devices. When a device is registered, events from that device will be processed by the render area, and passed into the scene graph. Events from unregistered devices will be ignored. void SoXtRASetBkgCol(SoXtRA *this, const SbColor *c) const SbColor * SoXtRAGetBkgCol(const SoXtRA *this) Set/get the background color for this window. Default is black (0,0,0). void SoXtRASetBkgInd(SoXtRA *this, int index) int SoXtRAGetBkgInd(const SoXtRA *this) Sets/gets the window background color when in color index mode. (default to black (index 0)). void SoXtRASetOverBkgInd(SoXtRA *this, int index) int SoXtRAGetOverBkgInd(const SoXtRA *this) Sets/gets the overlay window background color index. (default to 0 (clear color)). void SoXtRASetColMap(SoXtRA *this, int startIndex, int num, const SbColor *colors) Sets the colors to use when displaying in color index mode. This will load the color map with the given colors at the starting index. void SoXtRASetOverColMap(SoXtRA *this, int startIndex, int num, const SbColor *colors) Sets the colors to use for overlay bit planes.This will load the color map with the given colors at the starting index. void SoXtRASetVPReg(SoXtRA *this, const SbViewportRegion *newRegion) const SbViewportRegion * SoXtRAGetVPReg(const SoXtRA *this) Sets/gets current viewport region to use for rendering void SoXtRASetTranspType(SoXtRA *this, SoGLRenderAction::TransparencyType type) SoGLRenderAction::TransparencyType SoXtRAGetTranspType(const SoXtRA *this) Set/get the quality level for rendering transparent objects. See SoGLRenderAction for possible transparency types. void SoXtRASetAntialiasing(SoXtRA *this, SbBool smoothing, int numPasses) void SoXtRAGetAntialiasing(const SoXtRA *this, SbBool *smoothing, int *numPasses) Set/get the antialiasing for rendering. There are two kinds of antialiasing available: smoothing and multipass antialiasing. If smoothing is set to TRUE, smoothing is enabled. Smoothing uses OpenGL's line- and point-smoothing features to provide cheap antialiasing of lines and points. The value of numPasses controls multipass antialiasing. Each time a render action is applied, Inventor renders the scene numPasses times from slightly different camera positions, averaging the results. numPasses can be from one to 255, inclusive. Setting numPasses to one disables multipass antialiasing. You can use either, both, or neither of these antialiasing techniques. By default, both smoothing and multipass antialiasing are disabled. void SoXtRASetClearBeforeRender(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsClearBeforeRender(const SoXtRA *this) Enable/prevent window clearing from happening before a rendering starts (default is clear TRUE). This can be useful to limit flickering when doing single buffering and geometry covers the entire window (used in the material editor). void SoXtRASetClearBeforeOverRender(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsClearBeforeOverRender(const SoXtRA *this) Enable/prevent overlay window clearing from happening before a rendering starts (default is clear TRUE). void SoXtRASetAutoRedraw(SoXtRA *this, SbBool trueOrFalse) SbBool SoXtRAIsAutoRedraw(const SoXtRA *this) The render area will automatically redraw whenever something in the scene graph changes. Passing FALSE will disable this feature. void SoXtRASetRedrawPriority(SoXtRA *this, uint32_t priority) uint32_t SoXtRAGetRedrawPriority(const SoXtRA *this) uint32_t SoXtRAGetDefaultRedrawPriority() Sets/gets the priority of the redraw sensor and get the default priority number. void SoXtRARender(SoXtRA *this) void SoXtRARenderOverlay(SoXtRA *this) Calling this forces the render area to be redrawn now. It is not necessary to call this method if auto redraw is enabled (which is the default). void SoXtRAScheduleRedraw(SoXtRA *this) void SoXtRAScheduleOverRedraw(SoXtRA *this) Schedule a redraw to happen sometime soon (as opposed to immediately). This can be used to compress multiple redraws. void SoXtRARedrawOnSelChange(SoXtRA *this, SoSelection *s) void SoXtRARedrawOverOnSelChange(SoXtRA *this, SoSelection *s) Call this convenience method to have this render area redraw whenever the selection list changes in the passed node. This is useful if using a highlight render action like the SoBoxHighlightRenderAction to correctly render whenever the selection changes. Pass NULL to turn this off. void SoXtRASetEvCB(SoXtRA *this, SoXtRenderAreaEventCB *fcn, void *userData = NULL) X events 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 event (when viewers are not in viewing mode). This function allows the application to register a callback for handling events that occur in the window, instead of sending them to the viewers or down the graph. The callback is passed the X event, and should return TRUE if it handled the event. If the callback returns FALSE, then the event will be handled by the render area. void SoXtRASetGLRenderAct(SoXtRA *this, SoGLRenderAction *ra) SoGLRenderAction * SoXtRAGetGLRenderAct(const SoXtRA *this) Sets/gets the GL render action to use. This is used to set selection highlighting with the SoBoxHighlightRenderAction and SoLineHighlightRenderAction classes. void SoXtRASetOverGLRenderAct(SoXtRA *this, SoGLRenderAction *ra) SoGLRenderAction * SoXtRAGetOverGLRenderAct(const SoXtRA *this) Sets/gets the GL render action for the overlay window. void SoXtRASetSceneMgr(SoXtRA *this, SoSceneManager *sm) SoSceneManager * SoXtRAGetSceneMgr(const SoXtRA *this) void SoXtRASetOverSceneMgr(SoXtRA *this, SoSceneManager *sm) SoSceneManager * SoXtRAGetOverSceneMgr(const SoXtRA *this) Sets/gets the normal and overlay plane scene managers. Note: for convenience most of the SoSceneManager methods have already been added to this class. RESOURCES *SoXtRenderArea*BackgroundColor: black (color name or hex value) SEE ALSO SoXtGLWidget, SoXtComponent, SoXtViewer, SoSceneManager, SoBoxHighlightRenderAction, SoLineHighlightRenderAction