SoRenderManager (3)

#include <Inventor/SoRenderManager.h>

Public Types

enum RenderMode { AS_IS, WIREFRAME, POINTS, WIREFRAME_OVERLAY, HIDDEN_LINE, BOUNDING_BOX }

enum StereoMode { MONO, ANAGLYPH, SEPARATE_OUTPUT, QUAD_BUFFER = SEPARATE_OUTPUT, INTERLEAVED_ROWS, INTERLEAVED_COLUMNS }

enum BufferType { BUFFER_SINGLE, BUFFER_DOUBLE }

enum AutoClippingStrategy { NO_AUTO_CLIPPING, FIXED_NEAR_PLANE, VARIABLE_NEAR_PLANE }

Public Member Functions

SoRenderManager (void)

virtual ~SoRenderManager ()

virtual void render (const SbBool clearwindow=TRUE, const SbBool clearzbuffer=TRUE)

virtual void render (SoGLRenderAction *action, const SbBool initmatrices=TRUE, const SbBool clearwindow=TRUE, const SbBool clearzbuffer=TRUE)

Superimposition * addSuperimposition (SoNode *scene, uint32_t flags=Superimposition::AUTOREDRAW|Superimposition::ZBUFFERON|Superimposition::CLEARZBUFFER)

void removeSuperimposition (Superimposition *s)

virtual void setSceneGraph (SoNode *const sceneroot)

virtual SoNode * getSceneGraph (void) const

void setCamera (SoCamera *camera)

SoCamera * getCamera (void) const

void setAutoClipping (AutoClippingStrategy autoclipping)

AutoClippingStrategy getAutoClipping (void) const

void setNearPlaneValue (float value)

float getNearPlaneValue (void) const

void setTexturesEnabled (const SbBool onoff)

SbBool isTexturesEnabled (void) const

void setDoubleBuffer (const SbBool enable)

SbBool isDoubleBuffer (void) const

void setRenderMode (const RenderMode mode)

RenderMode getRenderMode (void) const

void setStereoMode (const StereoMode mode)

StereoMode getStereoMode (void) const

void setStereoOffset (const float offset)

float getStereoOffset (void) const

void setRenderCallback (SoRenderManagerRenderCB *f, void *const userData=NULL)

SbBool isAutoRedraw (void) const

void setRedrawPriority (const uint32_t priority)

uint32_t getRedrawPriority (void) const

void scheduleRedraw (void)

void setWindowSize (const SbVec2s &newsize)

const SbVec2s & getWindowSize (void) const

void setSize (const SbVec2s &newsize)

const SbVec2s & getSize (void) const

void setOrigin (const SbVec2s &newOrigin)

const SbVec2s & getOrigin (void) const

void setViewportRegion (const SbViewportRegion &newRegion)

const SbViewportRegion & getViewportRegion (void) const

void setBackgroundColor (const SbColor4f &color)

const SbColor4f & getBackgroundColor (void) const

void setOverlayColor (const SbColor4f &color)

SbColor4f getOverlayColor (void) const

void setBackgroundIndex (const int index)

int getBackgroundIndex (void) const

void setRGBMode (const SbBool onOrOff)

SbBool isRGBMode (void) const

virtual void activate (void)

virtual void deactivate (void)

void setAntialiasing (const SbBool smoothing, const int numPasses)

void getAntialiasing (SbBool &smoothing, int &numPasses) const

void setGLRenderAction (SoGLRenderAction *const action)

SoGLRenderAction * getGLRenderAction (void) const

void setAudioRenderAction (SoAudioRenderAction *const action)

SoAudioRenderAction * getAudioRenderAction (void) const

void addPreRenderCallback (SoRenderManagerRenderCB *cb, void *data)

void removePreRenderCallback (SoRenderManagerRenderCB *cb, void *data)

void addPostRenderCallback (SoRenderManagerRenderCB *cb, void *data)

void removePostRenderCallback (SoRenderManagerRenderCB *cb, void *data)

void reinitialize (void)

Static Public Member Functions

static void enableRealTimeUpdate (const SbBool flag)

static SbBool isRealTimeUpdateEnabled (void)

static uint32_t getDefaultRedrawPriority (void)

Protected Member Functions

int isActive (void) const

void redraw (void)

void renderScene (SoGLRenderAction *action, SoNode *scene, uint32_t clearmask)

void actuallyRender (SoGLRenderAction *action, const SbBool initmatrices=TRUE, const SbBool clearwindow=TRUE, const SbBool clearzbuffer=TRUE)

void renderSingle (SoGLRenderAction *action, SbBool initmatrices, SbBool clearwindow, SbBool clearzbuffer)

Render once in correct draw style. void renderStereo (SoGLRenderAction *action, SbBool initmatrices, SbBool clearwindow, SbBool clearzbuffer)

Render scene according to current stereo mode. void initStencilBufferForInterleavedStereo (void)

void clearBuffers (SbBool color, SbBool depth)

The SoRenderManager class is used for controlling the rendering of a scene graph.

You can use this class to configure things like clipping planes, rendering mode, stereo rendering and the background color. In earlier versions of Coin/Inventor, this was set up in the GUI toolkits, making it quite hard to make a new Coin viewer for another GUI toolkit. With this new class all that is needed is to create one SoRenderManager instance per viewer/view.

This class does not handle events for the scene graph/viewer. To do that you can use the SoEventManager class.

Since:

Coin 3.0

enum \fBSoRenderManager::RenderMode\fP

Sets how rendering of primitives is done.

Enumerator

AS_IS

Render primitives as they are described in the scenegraph.

WIREFRAME

Render polygons as wireframe

POINTS

Render only the vertices of the polygons and lines.

WIREFRAME_OVERLAY

Render a wireframe overlay in addition to the AS_IS mode

HIDDEN_LINE

As WIREFRAME, but culls lines which would otherwise not be shown due to geometric culling.

BOUNDING_BOX

Only show the bounding box of each object.

enum \fBSoRenderManager::StereoMode\fP

Manages how to render steroscopic images.

Enumerator

MONO

No stereoscopic rendering

ANAGLYPH

Anaglyph rendering is used to provide a steroscopic 3D effect, when viewed with 3D glasses. The image is made up of two color layers which are superimposed on each other, and appears as 3 dimensional when viewed through corresponding colored filters(glases)

SEPARATE_OUTPUT

Send output to separate buffers.

QUAD_BUFFER

Same as SEPARATE_OUTPUT, SEPARATE_OUTPUT is more commonly known as QUAD_BUFFER, when also using double buffering.

INTERLEAVED_ROWS

Render every second row as left and right image. If rendered with a polarized projector, polarized filters kan be used to give a 3D effect.

INTERLEAVED_COLUMNS

Render every second column as left and right image. If rendered with a polarized projector, polarized filters kan be used to give a 3D effect.

enum \fBSoRenderManager::BufferType\fP

Buffering strategy

Enumerator

BUFFER_SINGLE

Output to one buffer

BUFFER_DOUBLE

Alternate between output buffers

enum \fBSoRenderManager::AutoClippingStrategy\fP

Strategy for adjusting camera near/far clipping plane

Enumerator

NO_AUTO_CLIPPING

Turn off automatic clipping. The user needs to set the correct values in the camera.

FIXED_NEAR_PLANE

Keep near plane at a fixed distance from the camera. The far plane is always set at the end of the bounding box.

VARIABLE_NEAR_PLANE

Variable adjustment of the nearplane relative to the camera.

SoRenderManager::SoRenderManager (void)

Constructor.

SoRenderManager::~SoRenderManager ()\fC [virtual]\fP

Destructor.

void SoRenderManager::render (const SbBoolclearwindow = \fCTRUE\fP, const SbBoolclearzbuffer = \fCTRUE\fP)\fC [virtual]\fP

Render the scene graph.

All SbBool arguments should normally be TRUE, but they can be set to FALSE to optimize for special cases (e.g. when doing wireframe rendering one doesn't need a depth buffer).

Parameters:

clearwindow If set to TRUE, clear the rendering buffer before drawing.

clearzbuffer If set to TRUE, clear the depth buffer values before rendering.

void SoRenderManager::render (\fBSoGLRenderAction\fP *action, const SbBoolinitmatrices = \fCTRUE\fP, const SbBoolclearwindow = \fCTRUE\fP, const SbBoolclearzbuffer = \fCTRUE\fP)\fC [virtual]\fP

Render the scene graph.

All SbBool arguments should normally be TRUE, but they can be set to FALSE to optimize for special cases (e.g. when doing wireframe rendering one doesn't need a depth buffer).

Parameters:

clearwindow If set to TRUE, clear the rendering buffer before drawing.

clearzbuffer If set to TRUE, clear the depth buffer values before rendering.

initmatrices if true, the projection and modelview matrices are reset to identity

action Renders with a user supplied action

SoRenderManager::Superimposition * SoRenderManager::addSuperimposition (\fBSoNode\fP *scene, uint32_tflags = \fCSuperimposition::AUTOREDRAW | Superimposition::ZBUFFERON | Superimposition::CLEARZBUFFER\fP)

Add a superimposition for this scene graph. A superimposition can either be a scene rendered in the background, or a scene rendered in the front of the actual scene graph.

This is useful, for instance, if you want to add a gradient or an image in the background, and for having some HUD info in the foreground.

Please note that if you use superimpositions, multipass antialiasing have to be handled in the render manager, and not in SoGLRenderAction, so the pass update features in SoGLRenderAction will be disabled.

See also:

SoGLRenderAction::setNumPasses()

SoGLRenderAction::setPassUpdate()

SoGLRenderAction::setPassCallback()

void SoRenderManager::removeSuperimposition (Superimposition *s)

Removes a superimposition.

See also:

addSuperimposition()

void SoRenderManager::setSceneGraph (\fBSoNode\fP *constsceneroot)\fC [virtual]\fP

Set the node which is top of the scene graph we're managing. The sceneroot node reference count will be increased by 1, and any previously set scene graph top node will have it's reference count decreased by 1.

See also:

getSceneGraph()

\fBSoNode\fP * SoRenderManager::getSceneGraph (void) const\fC [virtual]\fP

Returns the pointer to root of scene graph.

void SoRenderManager::setCamera (\fBSoCamera\fP *camera)

Sets the camera to be used.

\fBSoCamera\fP * SoRenderManager::getCamera (void) const

Returns the current camera.

void SoRenderManager::setAutoClipping (\fBAutoClippingStrategy\fPautoclipping)

Sets strategy for adjusting camera clipping plane

See also:

SoRenderManager::AutoClippingStrategy

\fBSoRenderManager::AutoClippingStrategy\fP SoRenderManager::getAutoClipping (void) const

This method returns the current autoclipping strategy.

See also:

setAutoClipping

void SoRenderManager::setNearPlaneValue (floatvalue)

When the SoRenderManager::FIXED_NEAR_PLANE autoclipping strategy is used, you set the value of the near plane distance with this method.

See also:

setAutoClipping, getNearPlaneValue, SoRenderManager::AutoClippingStrategy

float SoRenderManager::getNearPlaneValue (void) const

This method returns the near plane distance value that will be used when the SoRenderManager::FIXED_NEAR_PLANE autoclipping strategy is used.

Default value is 0.6.

See also:

setAutoClipping, setNearPlaneValue, SoRenderManager::AutoClippingStrategy

void SoRenderManager::setTexturesEnabled (const SbBoolonoff)

Enable/disable textures when rendering. Defaults to TRUE.

See also:

isTexturesEnabled

SbBool SoRenderManager::isTexturesEnabled (void) const

Returns whether textures are enabled or not.

See also:

setTexturesEnabled

void SoRenderManager::setDoubleBuffer (const SbBoolenable)

Tell the scenemanager that double buffering is used

SbBool SoRenderManager::isDoubleBuffer (void) const

returns if the scenemanager is double buffered

void SoRenderManager::setRenderMode (const \fBRenderMode\fPmode)

Sets the render mode.

\fBSoRenderManager::RenderMode\fP SoRenderManager::getRenderMode (void) const

Returns the current render mode.

void SoRenderManager::setStereoMode (const \fBStereoMode\fPmode)

Sets the stereo mode.

\fBSoRenderManager::StereoMode\fP SoRenderManager::getStereoMode (void) const

Returns the current stereo mode.

void SoRenderManager::setStereoOffset (const floatoffset)

Sets the stereo offset used when doing stereo rendering.

float SoRenderManager::getStereoOffset (void) const

Returns the current stereo offset.

void SoRenderManager::setRenderCallback (SoRenderManagerRenderCB *f, void *constuserdata = \fCNULL\fP)

Set the callback function f to invoke when rendering the scene. userdata will be passed as the first argument of the function.

SbBool SoRenderManager::isAutoRedraw (void) const

Returns TRUE if the SoRenderManager automatically redraws the scene upon detecting changes in the scene graph.

The automatic redraw is turned on and off by setting either a valid callback function with setRenderCallback(), or by passing NULL.

void SoRenderManager::setRedrawPriority (const uint32_tpriority)

Set up the redraw priority for the SoOneShotSensor used to trigger redraws. By setting this lower than for your own sensors, you can make sure some code is always run before redraw happens.

See also:

SoDelayQueueSensor

uint32_t SoRenderManager::getRedrawPriority (void) const

Returns value of priority on the redraw sensor.

void SoRenderManager::scheduleRedraw (void)

Redraw at first opportunity as system becomes idle.

Multiple calls to this method before an actual redraw has taken place will only result in a single redraw of the scene.

void SoRenderManager::setWindowSize (const \fBSbVec2s\fP &newsize)

Update window size of our SoGLRenderAction's viewport settings.

Note that this will only change the information about window dimensions, the actual viewport size and origin (ie the rectangle which redraws are confined to) will stay the same.

See also:

setViewportRegion()

const \fBSbVec2s\fP & SoRenderManager::getWindowSize (void) const

Returns the current render action window size.

See also:

setWindowSize()

void SoRenderManager::setSize (const \fBSbVec2s\fP &newsize)

Set size of rendering area for the viewport within the current window.

const \fBSbVec2s\fP & SoRenderManager::getSize (void) const

Returns size of render area.

void SoRenderManager::setOrigin (const \fBSbVec2s\fP &newOrigin)

Set only the origin of the viewport region within the rendering window.

See also:

setViewportRegion(), setWindowSize()

const \fBSbVec2s\fP & SoRenderManager::getOrigin (void) const

Returns origin of rendering area viewport.

See also:

setOrigin()

void SoRenderManager::setViewportRegion (const \fBSbViewportRegion\fP &newregion)

Update our SoGLRenderAction's viewport settings.

This will change both the information about window dimensions and the actual viewport size and origin.

See also:

setWindowSize()

const \fBSbViewportRegion\fP & SoRenderManager::getViewportRegion (void) const

Returns current viewport region used by the renderaction and the event handling.

See also:

setViewportRegion()

void SoRenderManager::setBackgroundColor (const \fBSbColor4f\fP &color)

Sets color of rendering canvas.

const \fBSbColor4f\fP & SoRenderManager::getBackgroundColor (void) const

Returns color used for clearing the rendering area before rendering the scene.

void SoRenderManager::setOverlayColor (const \fBSbColor4f\fP &color)

Sets color of overlay.

\fBSbColor4f\fP SoRenderManager::getOverlayColor (void) const

Returns color used rendering overlay.

void SoRenderManager::setBackgroundIndex (const intindex)

Set index of background color in the color lookup table if rendering in colorindex mode.

Note: colorindex mode is not supported yet in Coin.

int SoRenderManager::getBackgroundIndex (void) const

Returns index of colormap for background filling.

See also:

setBackgroundIndex()

void SoRenderManager::setRGBMode (const SbBoolyes)

Turn RGB truecolor mode on or off. If you turn truecolor mode off, colorindex mode will be used instead.

SbBool SoRenderManager::isRGBMode (void) const

Returns the 'truecolor or colorindex' mode flag.

void SoRenderManager::activate (void)\fC [virtual]\fP

Activate rendering and event handling. Default is off.

void SoRenderManager::deactivate (void)\fC [virtual]\fP

Deactive rendering and event handling.

void SoRenderManager::setAntialiasing (const SbBoolsmoothing, const intnumpasses)

Turn antialiased rendering on or off.

See documentation for SoGLRenderAction::setSmoothing() and SoGLRenderAction::setNumPasses().

void SoRenderManager::getAntialiasing (SbBool &smoothing, int &numpasses) const

Returns rendering pass information.

See also:

setAntialiasing()

void SoRenderManager::setGLRenderAction (\fBSoGLRenderAction\fP *constaction)

Set the action to use for rendering. Overrides the default action made in the constructor.

\fBSoGLRenderAction\fP * SoRenderManager::getGLRenderAction (void) const

Returns pointer to render action.

void SoRenderManager::setAudioRenderAction (\fBSoAudioRenderAction\fP *constaction)

Set the action to use for rendering audio. Overrides the default action made in the constructor.

\fBSoAudioRenderAction\fP * SoRenderManager::getAudioRenderAction (void) const

Returns pointer to audio render action.

void SoRenderManager::enableRealTimeUpdate (const SbBoolflag)\fC [static]\fP

Set whether or not for SoRenderManager instances to 'touch' the global realTime field after a redraw. If this is not done, redrawing when animating the scene will only happen as fast as the realTime interval goes (which defaults to 12 times a second).

See also:

SoDB::setRealTimeInterval()

SbBool SoRenderManager::isRealTimeUpdateEnabled (void)\fC [static]\fP

Returns whether or not we automatically notifies everything connected to the realTime field after a redraw.

uint32_t SoRenderManager::getDefaultRedrawPriority (void)\fC [static]\fP

Returns the default priority of the redraw sensor.

See also:

SoDelayQueueSensor, setRedrawPriority()

void SoRenderManager::addPreRenderCallback (SoRenderManagerRenderCB *cb, void *data)

Adds a function to be called before rendering starts

Parameters:

cb function to be called

data User specified data to supply to callback function

void SoRenderManager::removePreRenderCallback (SoRenderManagerRenderCB *cb, void *data)

Removes a prerendercallback.

Precondition:

The tuple (cb, data) must exactly match an earlier call to SoRenderManager::addPreRenderCallback

Parameters:

cb function to be called

data User specified data to supply to callback function

void SoRenderManager::addPostRenderCallback (SoRenderManagerRenderCB *cb, void *data)

Adds a function to be called after rendering is complete

Parameters:

cb function to be called

data User specified data to supply to callback function

void SoRenderManager::removePostRenderCallback (SoRenderManagerRenderCB *cb, void *data)

Removes a postrendercallback.

Precondition:

The tuple (cb, data) must exactly match an earlier call to SoRenderManager::addPostRenderCallback

Parameters:

cb function to be called

data User specified data to supply to callback function

void SoRenderManager::reinitialize (void)

Reinitialize after parameters affecting the OpenGL context has changed.

int SoRenderManager::isActive (void) const\fC [protected]\fP

Returns the active flag.

void SoRenderManager::redraw (void)\fC [protected]\fP

Do an immediate redraw by calling the redraw callback function.

void SoRenderManager::renderScene (\fBSoGLRenderAction\fP *action, \fBSoNode\fP *scene, uint32_tclearmask)\fC [protected]\fP

Renders a scene and applies clear state as given by this renderManager

Parameters:

action Action to apply

scene Scene to render

clearmask mask to pass to glClear

void SoRenderManager::actuallyRender (\fBSoGLRenderAction\fP *action, const SbBoolinitmatrices = \fCTRUE\fP, const SbBoolclearwindow = \fCTRUE\fP, const SbBoolclearzbuffer = \fCTRUE\fP)\fC [protected]\fP

Convenience function for SoRenderManager::renderScene

Parameters:

action Renders with a user supplied action

initmatrices if true, the projection and modelview matrices are reset to identity

clearwindow If set to TRUE, clear the rendering buffer before drawing.

clearzbuffer If set to TRUE, clear the depth buffer values before rendering.

void SoRenderManager::renderSingle (\fBSoGLRenderAction\fP *action, SbBoolinitmatrices, SbBoolclearwindow, SbBoolclearzbuffer)\fC [protected]\fP

Render once in correct draw style. Convenience function for SoRenderManager::renderScene

Parameters:

action Renders with a user supplied action

initmatrices if true, the projection and modelview matrices are reset to identity

clearwindow If set to TRUE, clear the rendering buffer before drawing.

clearzbuffer If set to TRUE, clear the depth buffer values before rendering.

void SoRenderManager::renderStereo (\fBSoGLRenderAction\fP *action, SbBoolinitmatrices, SbBoolclearwindow, SbBoolclearzbuffer)\fC [protected]\fP

Render scene according to current stereo mode. Convenience function for SoRenderManager::renderScene

Parameters:

action Renders with a user supplied action

initmatrices if true, the projection and modelview matrices are reset to identity

clearwindow If set to TRUE, clear the rendering buffer before drawing.

clearzbuffer If set to TRUE, clear the depth buffer values before rendering.

void SoRenderManager::initStencilBufferForInterleavedStereo (void)\fC [protected]\fP

Initializes stencilbuffers for interleaved stereo

void SoRenderManager::clearBuffers (SbBoolcolor, SbBooldepth)\fC [protected]\fP

Clears buffers with the backgroundcolor set correctly

Parameters:

color Set to TRUE if color buffer should be cleared

depth Set to TRUE if depth buffer should be cleared

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