Perspective projection camera - with characteristic foreshortening.
Definition at line 25 of file TGLPerspectiveCamera.h.
Public Member Functions | |
TGLPerspectiveCamera () | |
Construct default XOZ perspective camera. More... | |
TGLPerspectiveCamera (const TGLVector3 &hAxis, const TGLVector3 &vAxis) | |
Construct perspective camera. More... | |
virtual | ~TGLPerspectiveCamera () |
Destroy perspective camera. More... | |
virtual void | Apply (const TGLBoundingBox &box, const TGLRect *pickRect=0) const |
Apply the camera to the current GL context, setting the viewport, projection and modelview matrices. More... | |
virtual void | Configure (Double_t fov, Double_t dolly, Double_t center[3], Double_t hRotate, Double_t vRotate) |
Configure the camera state. More... | |
Double_t | GetFOV () const |
virtual Bool_t | IsPerspective () const |
virtual void | Reset () |
Reset the camera to defaults - reframe the world volume established in Setup() in default state. More... | |
void | SetFOV (Double_t fov) |
virtual void | Setup (const TGLBoundingBox &box, Bool_t reset=kTRUE) |
Setup camera limits suitable to view the world volume defined by 'box' and call Reset() to initialise camera. More... | |
virtual Bool_t | Truck (Double_t xDelta, Double_t yDelta) |
Truck the camera - 'move camera parallel to film plane'. More... | |
virtual Bool_t | Truck (Int_t xDelta, Int_t yDelta, Bool_t mod1, Bool_t mod2) |
Truck the camera - 'move camera parallel to film plane'. More... | |
virtual Bool_t | Truck (Int_t xDelta, Int_t yDelta, Bool_t mod1, Bool_t mod2)=0 |
virtual Bool_t | Zoom (Int_t delta, Bool_t mod1, Bool_t mod2) |
Zoom the camera - 'adjust lens focal length, retaining camera position'. More... | |
Public Member Functions inherited from TGLCamera | |
TGLCamera () | |
Default base camera constructor. More... | |
TGLCamera (const TGLVector3 &hAxis, const TGLVector3 &vAxis) | |
Default base camera constructor. More... | |
virtual | ~TGLCamera () |
Base camera destructor. More... | |
Bool_t | AdjustAndClampVal (Double_t &val, Double_t min, Double_t max, Int_t screenShift, Int_t screenShiftRange, Bool_t mod1, Bool_t mod2) const |
Adjust a passed REFERENCE value 'val', based on screenShift delta. More... | |
Double_t | AdjustDelta (Double_t screenShift, Double_t deltaFactor, Bool_t mod1, Bool_t mod2) const |
Adjust a passed screen value and apply modifiers. More... | |
virtual void | Apply (const TGLBoundingBox &sceneBox, const TGLRect *pickRect=0) const =0 |
virtual void | Configure (Double_t zoom, Double_t dolly, Double_t center[3], Double_t hRotate, Double_t vRotate)=0 |
virtual Bool_t | Dolly (Int_t delta, Bool_t mod1, Bool_t mod2) |
Dolly the camera - 'move camera along eye line, retaining lens focal length'. More... | |
void | DrawDebugAids () const |
Draw out some debugging aids for the camera: More... | |
TGLVector3 | EyeDirection () const |
Extract the camera eye direction (vector), running from EyePoint() Camera must have valid frustum cache - call Apply() after last modification, before using. More... | |
TGLVertex3 | EyePoint () const |
Return the camera eye point (vertex) in world space Camera must have valid frustum cache - call Apply() after last modification, before using. More... | |
TGLVertex3 | FrustumCenter () const |
Find the center of the camera frustum from intersection of planes This method will work even with parallel left/right & top/bottom and infinite eye point of ortho cameras Camera must have valid frustum cache - call Apply() after last modification, before using. More... | |
Rgl::EOverlap | FrustumOverlap (const TGLBoundingBox &box) const |
Calculate overlap (kInside, kOutside, kPartial) of box with camera frustum Camera must have valid frustum cache - call Apply() after last modification, before using. More... | |
const TGLPlane & | FrustumPlane (EFrustumPlane plane) const |
const TGLMatrix & | GetCamBase () const |
const TGLMatrix & | GetCamTrans () const |
Double_t * | GetCenterVec () |
Bool_t | GetExternalCenter () |
Double_t | GetFarClip () const |
Double_t * | GetFixDefCenterVec () |
Double_t | GetNearClip () const |
Double_t | GetTheta () const |
Get angle between camera up axis. More... | |
Float_t | GetVAxisMinAngle () |
void | IncTimeStamp () |
Bool_t | IsCacheDirty () const |
virtual Bool_t | IsOrthographic () const |
virtual Bool_t | IsPerspective () const |
Bool_t | OfInterest (const TGLBoundingBox &box, Bool_t ignoreSize) const |
Calculate if the an object defined by world frame bounding box is 'of interest' to the camera. More... | |
TGLMatrix & | RefCamBase () |
TGLMatrix & | RefCamTrans () |
TGLMatrix & | RefLastNoPickProjM () const |
const TGLMatrix & | RefModelViewMatrix () const |
TGLRect & | RefViewport () |
const TGLRect & | RefViewport () const |
virtual void | Reset ()=0 |
void | ResetInterest () |
Clear out the existing interest box. More... | |
virtual Bool_t | Rotate (Int_t xDelta, Int_t yDelta, Bool_t mod1, Bool_t mod2) |
Rotate the camera round view volume center established in Setup(). More... | |
virtual Bool_t | RotateArcBall (Int_t xDelta, Int_t yDelta, Bool_t mod1, Bool_t mod2) |
Rotate the camera round view volume center established in Setup(). More... | |
virtual Bool_t | RotateArcBallRad (Double_t hRotate, Double_t vRotate) |
Rotate camera around center. More... | |
virtual Bool_t | RotateRad (Double_t hRotate, Double_t vRotate) |
Rotate camera around center. More... | |
void | SetCenterVec (Double_t x, Double_t y, Double_t z) |
Set camera center vector. More... | |
void | SetCenterVecWarp (Double_t x, Double_t y, Double_t z) |
Set camera center vector and do not keep the same combined camera transformation matrix. More... | |
void | SetExternalCenter (Bool_t x) |
Set camera center diffrent than scene center, if enable is kTRUE. More... | |
void | SetFixDefCenter (Bool_t x) |
void | SetFixDefCenterVec (Double_t x, Double_t y, Double_t z) |
virtual void | Setup (const TGLBoundingBox &box, Bool_t reset=kTRUE)=0 |
void | SetVAxisMinAngle (Float_t x) |
void | SetViewport (const TGLRect &viewport) |
Set viewport extents from passed 'viewport' rect. More... | |
UInt_t | TimeStamp () const |
virtual Bool_t | Truck (Double_t xDelta, Double_t yDelta) |
Truck the camera - 'move camera parallel to film plane'. More... | |
virtual Bool_t | Truck (Int_t xDelta, Int_t yDelta, Bool_t mod1, Bool_t mod2)=0 |
Bool_t | UpdateInterest (Bool_t force) |
Update the internal interest box (fInterestBox) of the camera. More... | |
TGLVector3 | ViewportDeltaToWorld (const TGLVertex3 &worldRef, Double_t viewportXDelta, Double_t viewportYDelta, TGLMatrix *modviewMat=0) const |
Apply a 2D viewport delta (shift) to the projection of worldRef onto viewport, returning the resultant world vector which equates to it. More... | |
Rgl::EOverlap | ViewportOverlap (const TGLBoundingBox &box) const |
Calculate overlap (kInside, kOutside, kPartial) of box projection onto viewport (as rect) against the viewport rect. More... | |
std::pair< Bool_t, TGLVertex3 > | ViewportPlaneIntersection (const TPoint &viewport, const TGLPlane &worldPlane) const |
Find the intersection of projection of supplied viewport TPoint (a 3D world line - see ViewportToWorld) with supplied world plane. More... | |
std::pair< Bool_t, TGLVertex3 > | ViewportPlaneIntersection (Double_t viewportX, Double_t viewportY, const TGLPlane &worldPlane) const |
Find the intersection of projection of supplied viewport point (a 3D world line - see ViewportToWorld) with supplied world plane. More... | |
TGLRect | ViewportRect (const TGLBoundingBox &box, const TGLBoundingBox::EFace *face=0) const |
Calculate viewport rectangle which just contains projection of world frame bounding box 'box' onto the viewport. More... | |
TGLRect | ViewportRect (const TGLBoundingBox &box, TGLBoundingBox::EFace face) const |
Calculate viewport rectangle which just contains projection of single 'face' of world frame bounding box 'box' onto the viewport. More... | |
TGLVertex3 | ViewportToWorld (const TGLVertex3 &viewportVertex, TGLMatrix *modviewMat=0) const |
Convert a '3D' viewport vertex to 3D world one. More... | |
TGLLine3 | ViewportToWorld (const TPoint &viewport) const |
Convert a 2D viewport position to 3D world line - the projection of the viewport point into 3D space. More... | |
TGLLine3 | ViewportToWorld (Double_t viewportX, Double_t viewportY) const |
Convert a 2D viewport position to 3D world line - the projection of the viewport point into 3D space. More... | |
void | WindowToViewport (Int_t &, Int_t &y) const |
void | WindowToViewport (TGLRect &rect) const |
void | WindowToViewport (TGLVertex3 &vertex) const |
void | WindowToViewport (TPoint &point) const |
TGLVector3 | WorldDeltaToViewport (const TGLVertex3 &worldRef, const TGLVector3 &worldDelta) const |
Convert a 3D vector worldDelta (shift) about vertex worldRef to a viewport (screen) '3D' vector. More... | |
TGLVertex3 | WorldToViewport (const TGLVertex3 &worldVertex, TGLMatrix *modviewMat=0) const |
Convert a 3D world vertex to '3D' viewport (screen) one. More... | |
virtual Bool_t | Zoom (Int_t delta, Bool_t mod1, Bool_t mod2)=0 |
Public Member Functions inherited from TObject | |
TObject () | |
TObject constructor. More... | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. More... | |
ULong_t | CheckedHash () |
Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Clear (Option_t *="") |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare abstract method. More... | |
virtual void | Copy (TObject &object) const |
Copy this to obj. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad) . More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual const char * | GetName () const |
Returns name of object. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual Option_t * | GetOption () const |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
Bool_t | HasInconsistentHash () const |
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More... | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
void | InvertBit (UInt_t f) |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
R__ALWAYS_INLINE Bool_t | IsOnHeap () const |
virtual Bool_t | IsSortable () const |
R__ALWAYS_INLINE Bool_t | IsZombie () const |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. More... | |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual void | Print (Option_t *option="") const |
This method must be overridden when a class wants to print itself. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. More... | |
void | ResetBit (UInt_t f) |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
void | SetBit (UInt_t f) |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
R__ALWAYS_INLINE Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
Private Attributes | |
Double_t | fFOV |
Static Private Attributes | |
static Double_t | fgFOVDefault = 30 |
static UInt_t | fgFOVDeltaSens = 500 |
static Double_t | fgFOVMax = 120.0 |
static Double_t | fgFOVMin = 0.01 |
Additional Inherited Members | |
Public Types inherited from TGLCamera | |
enum | EFrustumPlane { kNear = 0 , kLeft = 1 , kRight = 2 , kTop = 3 , kBottom = 4 , kFar = 5 , kPlanesPerFrustum = 6 } |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) } |
enum | EDeprecatedStatusBits { kObjInCanvas = BIT(3) } |
enum | EStatusBits { kCanDelete = BIT(0) , kMustCleanup = BIT(3) , kIsReferenced = BIT(4) , kHasUUID = BIT(5) , kCannotPick = BIT(6) , kNoContextMenu = BIT(8) , kInvalidObject = BIT(13) } |
Static Public Member Functions inherited from TObject | |
static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
Protected Member Functions inherited from TGLCamera | |
void | UpdateCache () const |
largest box diagonal seen in OfInterest() - used when bootstrapping interest box More... | |
Protected Member Functions inherited from TObject | |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
void | MakeZombie () |
Protected Attributes inherited from TGLCamera | |
Bool_t | fCacheDirty |
TGLMatrix | fCamBase |
TGLMatrix | fCamTrans |
TGLVector3 * | fCenter |
TGLMatrix | fClipM |
modelView matrix (cached) More... | |
TGLVector3 | fDefCenter |
Double_t | fDollyDefault |
last applied far-clip More... | |
Double_t | fDollyDistance |
TGLVector3 | fExtCenter |
Bool_t | fExternalCenter |
Double_t | fFarClip |
last applied near-clip More... | |
TGLVector3 | fFDCenter |
Bool_t | fFixDefCenter |
TGLPlane | fFrustumPlanes [kPlanesPerFrustum] |
object space clip matrix (cached) More... | |
TGLBoundingBox | fInterestBox |
viewport (GL coords - origin bottom left) More... | |
Double_t | fLargestSeen |
the interest box - created in UpdateInterest() More... | |
TGLMatrix | fLastNoPickProjM |
timestamp More... | |
TGLMatrix | fModVM |
projection matrix (cached) More... | |
Double_t | fNearClip |
current camera center More... | |
TGLMatrix | fProjM |
no-pick projection matrix (cached) More... | |
UInt_t | fTimeStamp |
cached items dirty? More... | |
Float_t | fVAxisMinAngle |
TGLRect | fViewport |
frustum planes (cached) More... | |
Bool_t | fWasArcBalled |
Static Protected Attributes inherited from TGLCamera | |
static UInt_t | fgDollyDeltaSens = 500 |
#include <TGLPerspectiveCamera.h>
TGLPerspectiveCamera::TGLPerspectiveCamera | ( | ) |
Construct default XOZ perspective camera.
Definition at line 34 of file TGLPerspectiveCamera.cxx.
TGLPerspectiveCamera::TGLPerspectiveCamera | ( | const TGLVector3 & | hAxis, |
const TGLVector3 & | vAxis | ||
) |
Construct perspective camera.
Definition at line 45 of file TGLPerspectiveCamera.cxx.
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virtual |
Destroy perspective camera.
Definition at line 56 of file TGLPerspectiveCamera.cxx.
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virtual |
Apply the camera to the current GL context, setting the viewport, projection and modelview matrices.
After this vertices etc can be directly entered in the world frame. This also updates the cached frustum values, enabling all the projection, overlap tests etc defined in TGLCamera to be used.
Arguments are:
Implements TGLCamera.
Definition at line 158 of file TGLPerspectiveCamera.cxx.
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virtual |
Configure the camera state.
Implements TGLCamera.
Definition at line 272 of file TGLPerspectiveCamera.cxx.
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inline |
Definition at line 41 of file TGLPerspectiveCamera.h.
|
inlinevirtual |
Reimplemented from TGLCamera.
Definition at line 39 of file TGLPerspectiveCamera.h.
Reset the camera to defaults - reframe the world volume established in Setup() in default state.
Note: limits defined in Setup() are not adjusted.
Implements TGLCamera.
Definition at line 99 of file TGLPerspectiveCamera.cxx.
Definition at line 42 of file TGLPerspectiveCamera.h.
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virtual |
Setup camera limits suitable to view the world volume defined by 'box' and call Reset() to initialise camera.
Implements TGLCamera.
Definition at line 64 of file TGLPerspectiveCamera.cxx.
Truck the camera - 'move camera parallel to film plane'.
Returns kTRUE is redraw required (camera change), kFALSE otherwise.
Reimplemented from TGLCamera.
Definition at line 137 of file TGLCamera.cxx.
Truck the camera - 'move camera parallel to film plane'.
Returns kTRUE is redraw required (camera change), kFALSE otherwise.
Implements TGLCamera.
Definition at line 134 of file TGLPerspectiveCamera.cxx.
Implements TGLCamera.
Zoom the camera - 'adjust lens focal length, retaining camera position'.
Arguments are:
Returns kTRUE is redraw required (camera change), kFALSE otherwise.
Implements TGLCamera.
Definition at line 118 of file TGLPerspectiveCamera.cxx.
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private |
Definition at line 29 of file TGLPerspectiveCamera.h.
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staticprivate |
Definition at line 31 of file TGLPerspectiveCamera.h.
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staticprivate |
Definition at line 32 of file TGLPerspectiveCamera.h.
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staticprivate |
Definition at line 31 of file TGLPerspectiveCamera.h.
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staticprivate |
Definition at line 31 of file TGLPerspectiveCamera.h.