SoReversePerspectiveCamera(3)

📦
version 4.0.10 · 4 versions
, in fedora 43, fedora 44

✨ SoReversePerspectiveCamera ✨

okay bestie come CLOSE, we're talking about SoReversePerspectiveCamera from Coin, section 3 of the manual 🎀

This is a camera node that does reverse perspective rendering — like, the whole point of the class, no cap. And heads up: this page is long, so it's split into 2 parts and you're reading part 1. Strap in 💅

🌸 NAME 🌸

SoReversePerspectiveCamera — the class that defines a camera node with reverse perspective rendering. That's the vibe, that's the job description, periodt.

✨ SYNOPSIS ✨

#include <Inventor/nodes/SoReversePerspectiveCamera.h>

Inherits SoPerspectiveCamera. Yes queen, it's giving camera but reversed energy 👑

💖 Public Member Functions 💖

  • virtual SoType getTypeId (void) const
  • SoReversePerspectiveCamera (void)

🦋 Public Member Functions inherited from SoPerspectiveCamera 🦋

  • SoPerspectiveCamera (void)
  • virtual void scaleHeight (float scalefactor)
  • virtual SbViewVolume getViewVolume (float useaspectratio=0.0f) const
  • virtual void viewBoundingBox (const SbBox3f &box, float aspect, float slack)

🌈 Public Member Functions inherited from SoCamera 🌈

  • SbViewVolume getViewVolume (const SbViewportRegion &vp, SbViewportRegion &resultvp, const SbMatrix &mm=SbMatrix::identity()) const
  • void pointAt (const SbVec3f &targetpoint)
  • void pointAt (const SbVec3f &targetpoint, const SbVec3f &upvector)
  • void viewAll (SoNode *const sceneroot, const SbViewportRegion &vpregion, const float slack=1.0f)
  • void viewAll (SoPath *const path, const SbViewportRegion &vpregion, const float slack=1.0f)
  • SbViewportRegion getViewportBounds (const SbViewportRegion &region) const
  • void setStereoMode (StereoMode mode)
  • StereoMode getStereoMode (void) const
  • void setStereoAdjustment (float adjustment)
  • float getStereoAdjustment (void) const
  • void setBalanceAdjustment (float adjustment)
  • float getBalanceAdjustment (void) const
  • virtual void doAction (SoAction *action)
  • virtual void callback (SoCallbackAction *action)
  • virtual void GLRender (SoGLRenderAction *action)
  • virtual void audioRender (SoAudioRenderAction *action)
  • virtual void getBoundingBox (SoGetBoundingBoxAction *action)
  • virtual void getMatrix (SoGetMatrixAction *action)
  • virtual void handleEvent (SoHandleEventAction *action)
  • virtual void rayPick (SoRayPickAction *action)
  • virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

🎀 Public Member Functions inherited from SoNode 🎀

  • void setOverride (const SbBool state)
  • SbBool isOverride (void) const
  • void setNodeType (const NodeType type)
  • NodeType getNodeType (void) const
  • virtual SoNode * copy (SbBool copyconnections=FALSE) const
  • virtual SbBool affectsState (void) const
  • virtual void GLRenderBelowPath (SoGLRenderAction *action)
  • virtual void GLRenderInPath (SoGLRenderAction *action)
  • virtual void GLRenderOffPath (SoGLRenderAction *action)
  • virtual void pick (SoPickAction *action)
  • virtual void search (SoSearchAction *action)
  • virtual void write (SoWriteAction *action)
  • virtual void grabEventsSetup (void)
  • virtual void grabEventsCleanup (void)
  • virtual void startNotify (void)
  • virtual void notify (SoNotList *l)
  • SbUniqueId getNodeId (void) const
  • virtual SoChildList * getChildren (void) const
  • virtual void writeInstance (SoOutput *out)
  • virtual SoNode * addToCopyDict (void) const
  • virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)
  • virtual SoFieldContainer * copyThroughConnection (void) const

💜 Public Member Functions inherited from SoFieldContainer 💜

  • void setToDefaults (void)
  • SbBool hasDefaultValues (void) const
  • SbBool fieldsAreEqual (const SoFieldContainer *container) const
  • void copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)
  • SbBool set (const char *const fielddata)
  • void get (SbString &fielddata)
  • virtual int getFields (SoFieldList &l) const
  • virtual int getAllFields (SoFieldList &l) const
  • virtual SoField * getField (const SbName &name) const
  • virtual SoField * getEventIn (const SbName &name) const
  • virtual SoField * getEventOut (const SbName &name) const
  • SbBool getFieldName (const SoField *const field, SbName &name) const
  • SbBool enableNotify (const SbBool flag)
  • SbBool isNotifyEnabled (void) const
  • SbBool set (const char *fielddata, SoInput *input)
  • void get (SbString &fielddata, SoOutput *out)
  • virtual SbBool validateNewFieldValue (SoField *field, void *newval)
  • virtual void addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)
  • SbBool getIsBuiltIn (void) const
  • virtual void getFieldsMemorySize (size_t &managed, size_t &unmanaged) const
  • void setUserData (void *userdata) const
  • void * getUserData (void) const

🌟 Public Member Functions inherited from SoBase 🌟

  • void ref (void) const
  • void unref (void) const
  • void unrefNoDelete (void) const
  • int32_t getRefCount (void) const
  • void touch (void)
  • SbBool isOfType (SoType type) const — Returns TRUE if the type of this object is either of the same type or inherited from type. (iconic behaviour honestly 🫶)
  • virtual SbName getName (void) const
  • virtual void setName (const SbName &newname)
  • void addAuditor (void *const auditor, const SoNotRec::Type type)
  • void removeAuditor (void *const auditor, const SoNotRec::Type type)
  • const SoAuditorList & getAuditors (void) const
  • SbBool shouldWrite (void)
  • void assertAlive (void) const

🔥 Static Public Member Functions 🔥

  • static SoType getClassTypeId (void)
  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

✨ Static Public Member Functions inherited from SoPerspectiveCamera ✨

  • static SoType getClassTypeId (void)
  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

💫 Static Public Member Functions inherited from SoCamera 💫

  • static SoType getClassTypeId (void)
  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

🌸 Static Public Member Functions inherited from SoNode 🌸

  • static uint32_t getCompatibilityTypes (const SoType &nodetype)
  • static SoType getClassTypeId (void)
  • static SoNode * getByName (const SbName &name)
  • static int getByName (const SbName &name, SoNodeList &l)
  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
  • static void initClasses (void)
  • static SbUniqueId getNextNodeId (void)
  • static int getActionMethodIndex (const SoType type)
  • static void getBoundingBoxS (SoAction *action, SoNode *node)
  • static void GLRenderS (SoAction *action, SoNode *node)
  • static void callbackS (SoAction *action, SoNode *node)
  • static void getMatrixS (SoAction *action, SoNode *node)
  • static void handleEventS (SoAction *action, SoNode *node)
  • static void pickS (SoAction *action, SoNode *node)
  • static void rayPickS (SoAction *action, SoNode *node)
  • static void searchS (SoAction *action, SoNode *node)
  • static void writeS (SoAction *action, SoNode *node)
  • static void audioRenderS (SoAction *action, SoNode *node)
  • static void getPrimitiveCountS (SoAction *action, SoNode *node)

🍓 Static Public Member Functions inherited from SoFieldContainer 🍓

  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
  • static SoType getClassTypeId (void) — This static method returns the SoType object associated with objects of this class.
  • static void cleanupClass (void)
  • static void initCopyDict (void)
  • static void addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy)
  • static SoFieldContainer * checkCopy (const SoFieldContainer *orig)
  • static SoFieldContainer * findCopy (const SoFieldContainer *orig, const SbBool copyconnections)
  • static void copyDone (void)

💅 Static Public Member Functions inherited from SoBase 💅

  • static void initClass (void) — Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
  • static SoType getClassTypeId (void) — This static method returns the SoType object associated with objects of this class.
  • static void addName (SoBase *const base, const char *const name)
  • static void removeName (SoBase *const base, const char *const name)
  • static void incrementCurrentWriteCounter (void)
  • static void decrementCurrentWriteCounter (void)
  • static SoBase * getNamedBase (const SbName &name, SoType type)
  • static int getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)
  • static SbBool read (SoInput *input, SoBase *&base, SoType expectedtype)
  • static void setInstancePrefix (const SbString &c)
  • static void setTraceRefs (SbBool trace)
  • static SbBool getTraceRefs (void)
  • static SbBool connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
  • static SbBool readRoute (SoInput *input)

🧚 Protected Member Functions 🧚

  • virtual const SoFieldData * getFieldData (void) const
  • virtual ~SoReversePerspectiveCamera ()

🦋 Protected Member Functions inherited from SoPerspectiveCamera 🦋

  • virtual ~SoPerspectiveCamera ()

🌈 Protected Member Functions inherited from SoCamera 🌈

  • SoCamera (void)
  • virtual ~SoCamera ()
  • virtual void jitter (int numpasses, int curpass, const SbViewportRegion &vpreg, SbVec3f &jitteramount) const

🎀 Protected Member Functions inherited from SoNode 🎀

  • SoNode (void)
  • virtual ~SoNode ()
  • virtual SbBool readInstance (SoInput *in, unsigned short flags)

💜 Protected Member Functions inherited from SoFieldContainer 💜

  • SoFieldContainer (void)
  • virtual ~SoFieldContainer ()

🌟 Protected Member Functions inherited from SoBase 🌟

  • SoBase (void)
  • virtual ~SoBase ()
  • virtual void destroy (void)
  • SbBool hasMultipleWriteRefs (void) const
  • SbBool writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
  • void writeFooter (SoOutput *out) const
  • virtual const char * getFileFormatName (void) const
  • virtual SoNotRec createNotRec (void)

✨ Static Protected Member Functions ✨

  • static const SoFieldData ** getFieldDataPtr (void)

💖 Static Protected Member Functions inherited from SoPerspectiveCamera 💖

  • static const SoFieldData ** getFieldDataPtr (void)

🌸 Static Protected Member Functions inherited from SoCamera 🌸

  • static const SoFieldData ** getFieldDataPtr (void)

🦋 Static Protected Member Functions inherited from SoNode 🦋

  • static const SoFieldData ** getFieldDataPtr (void)
  • static void setNextActionMethodIndex (int index)
  • static int getNextActionMethodIndex (void)
  • static void incNextActionMethodIndex (void)
  • static void setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)

and bestie… there's literally MORE coming, this was just part 1 — keep reading ➡️ 💖

Static Protected Member Functions inherited from SoBase 💅

okay so these are the static protected member functions that come from SoBase. bestie you probably won't touch these unless you're deep in the internals, but here they are:

  • static uint32_t getCurrentWriteCounter(void)
  • static void staticDataLock(void)
  • static void staticDataUnlock(void)

Additional Inherited Members 🌸

Public Types inherited from SoCamera

  • enum ViewportMapping — the options are: CROP_VIEWPORT_FILL_FRAME, CROP_VIEWPORT_LINE_FRAME, CROP_VIEWPORT_NO_FRAME, ADJUST_CAMERA, LEAVE_ALONE
  • enum StereoMode — the options are: MONOSCOPIC, LEFT_VIEW, RIGHT_VIEW

Public Types inherited from SoNode

  • enum NodeType — the values are: INVENTOR = 0x0000, VRML1 = 0x0001, VRML2 = 0x0002, INVENTOR_1 = 0x0004, INVENTOR_2_0 = 0x0008, INVENTOR_2_1 = 0x0010, INVENTOR_2_5 = 0x0020, INVENTOR_2_6 = 0x0040, COIN_1_0 = 0x0080, COIN_2_0 = 0x0100, EXTENSION = 0x0200, COIN_2_2 = 0x0400, COIN_2_3 = 0x0800, COIN_2_4 = 0x1000, INVENTOR_5_0 = 0x2000, COIN_2_5 = 0x4000, COIN_3_0 = 0x8000, INVENTOR_6_0 = 0x10000, COIN_4_0 = 0x20000

Public Attributes inherited from SoPerspectiveCamera

  • SoSFFloat heightAngle

Public Attributes inherited from SoCamera

  • SoSFEnum viewportMapping
  • SoSFVec3f position
  • SoSFRotation orientation
  • SoSFFloat aspectRatio
  • SoSFFloat nearDistance
  • SoSFFloat farDistance
  • SoSFFloat focalDistance

Protected Types inherited from SoBase

  • enum BaseFlags — the values are: IS_ENGINE = 0x01, IS_GROUP = 0x02

Protected Attributes inherited from SoNode

  • SbUniqueId uniqueId

Protected Attributes inherited from SoFieldContainer

  • SbBool isBuiltIn

Static Protected Attributes inherited from SoNode

  • static SbUniqueId nextUniqueId = 1
  • static int nextActionMethodIndex = 0

Detailed Description ✨

The SoReversePerspectiveCamera class is literally a camera node that does reverse perspective rendering. 🦋

So for a realistic looking 3D scene, you'd normally render geometry with perspective calculations. And yes, you use this camera type to accomplish that. 💅

Reverse perspective rendering is a special case of perspective rendering. It's where the projection rays do not converge in the eye of the observer — instead, they meet at a point behind the scene. The result? Objects that are farther away from the observer appear larger than closer objects. 🤯

A reverse perspective projection is defined by:

  • setting the perspective camera position to the projection point behind the scene
  • setting near / far distance to negative values
  • rotating the camera orientation by 180 degrees around the camera Z-axis to compensate the image flip induced by the negative near / far values

The view volume of the default reverse perspective camera is defined as shown below.

FILE FORMAT/DEFAULTS: ReversePerspectiveCamera { viewportMapping ADJUST_CAMERA position 0 0 -10 orientation 0 0 1 3.14159 nearDistance -10 farDistance -1 aspectRatio 1 focalDistance -6 heightAngle 0.78539819 }

Constructor & Destructor Documentation 🎀

SoReversePerspectiveCamera::SoReversePerspectiveCamera (void)

Constructor. That's it. 🎀

SoReversePerspectiveCamera::~SoReversePerspectiveCamera () [protected], [virtual]

Destructor. Bye bestie. 💖

Member Function Documentation 💜

SoType SoReversePerspectiveCamera::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

SoType SoReversePerspectiveCamera::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.

Reimplemented from SoPerspectiveCamera.

const SoFieldData ** SoReversePerspectiveCamera::getFieldDataPtr (void) [static], [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Returns the SoFieldData class which holds information about fields in this node.

const SoFieldData * SoReversePerspectiveCamera::getFieldData (void) const [protected], [virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoPerspectiveCamera.

Author 👑

Generated automatically by Doxygen for Coin from the source code.

And that's a wrap! This page is from Version 4.0.10, dated Thu Jun 25 2026 00:00. Stay slaying, bestie. 💅✨

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