VTK  9.2.6
vtkCamera.h
Go to the documentation of this file.
1/*=========================================================================
2
3 Program: Visualization Toolkit
4 Module: vtkCamera.h
5
6 Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7 All rights reserved.
8 See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9
10 This software is distributed WITHOUT ANY WARRANTY; without even
11 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12 PURPOSE. See the above copyright notice for more information.
13
14=========================================================================*/
28
29#ifndef vtkCamera_h
30#define vtkCamera_h
31
32#include "vtkObject.h"
33#include "vtkRect.h" // for ivar
34#include "vtkRenderingCoreModule.h" // For export macro
35
37class vtkInformation;
38class vtkMatrix4x4;
40class vtkRenderer;
41class vtkTransform;
43class vtkCameraCallbackCommand;
44
45class VTKRENDERINGCORE_EXPORT vtkCamera : public vtkObject
46{
47public:
48 vtkTypeMacro(vtkCamera, vtkObject);
49 void PrintSelf(ostream& os, vtkIndent indent) override;
50
56 static vtkCamera* New();
57
59
63 void SetPosition(double x, double y, double z);
64 void SetPosition(const double a[3]) { this->SetPosition(a[0], a[1], a[2]); }
65 vtkGetVector3Macro(Position, double);
67
69
73 void SetFocalPoint(double x, double y, double z);
74 void SetFocalPoint(const double a[3]) { this->SetFocalPoint(a[0], a[1], a[2]); }
75 vtkGetVector3Macro(FocalPoint, double);
77
79
83 void SetViewUp(double vx, double vy, double vz);
84 void SetViewUp(const double a[3]) { this->SetViewUp(a[0], a[1], a[2]); }
85 vtkGetVector3Macro(ViewUp, double);
87
94
99 void SetDistance(double);
100
102
106 vtkGetMacro(Distance, double);
108
110
115 vtkGetVector3Macro(DirectionOfProjection, double);
117
124 void Dolly(double value);
125
127
130 void SetRoll(double angle);
131 double GetRoll();
133
138 void Roll(double angle);
139
146 void Azimuth(double angle);
147
155 void Yaw(double angle);
156
163 void Elevation(double angle);
164
170 void Pitch(double angle);
171
173
183
185
199
201
212 void SetViewAngle(double angle);
213 vtkGetMacro(ViewAngle, double);
215
217
226 void SetParallelScale(double scale);
227 vtkGetMacro(ParallelScale, double);
229
237 void Zoom(double factor);
238
240
253 void SetClippingRange(double dNear, double dFar);
254 void SetClippingRange(const double a[2]) { this->SetClippingRange(a[0], a[1]); }
255 vtkGetVector2Macro(ClippingRange, double);
257
259
266 void SetThickness(double);
267 vtkGetMacro(Thickness, double);
269
271
280 void SetWindowCenter(double x, double y);
281 vtkGetVector2Macro(WindowCenter, double);
283
297 void SetObliqueAngles(double alpha, double beta);
298
305
307
312 vtkGetVector3Macro(ViewPlaneNormal, double);
314
316
324 void SetViewShear(double dxdz, double dydz, double center);
325 void SetViewShear(double d[3]);
326 vtkGetVector3Macro(ViewShear, double);
328
330
334 vtkSetMacro(EyeAngle, double);
335 vtkGetMacro(EyeAngle, double);
337
339
345 vtkSetMacro(FocalDisk, double);
346 vtkGetMacro(FocalDisk, double);
348
350
358 vtkSetMacro(FocalDistance, double);
359 vtkGetMacro(FocalDistance, double);
361
363
376
378
383 vtkSetVector3Macro(ScreenBottomLeft, double);
384 vtkGetVector3Macro(ScreenBottomLeft, double);
386
388
393 vtkSetVector3Macro(ScreenBottomRight, double);
394 vtkGetVector3Macro(ScreenBottomRight, double);
396
398
403 vtkSetVector3Macro(ScreenTopRight, double);
404 vtkGetVector3Macro(ScreenTopRight, double);
406
408
413 vtkSetMacro(EyeSeparation, double);
414 vtkGetMacro(EyeSeparation, double);
416
418
424 void SetEyePosition(double eyePosition[3]);
425 void GetEyePosition(double eyePosition[3]);
427
432 void GetEyePlaneNormal(double normal[3]);
433
435
442 vtkGetObjectMacro(EyeTransformMatrix, vtkMatrix4x4);
444
451 void SetEyeTransformMatrix(const double elements[16]);
452
454
462
468 void SetModelTransformMatrix(const double elements[16]);
469
474
479
488
499
509
519
525 vtkSetMacro(ExplicitAspectRatio, double);
526 vtkGetMacro(ExplicitAspectRatio, double);
528
535 vtkSetMacro(UseExplicitAspectRatio, bool);
536 vtkGetMacro(UseExplicitAspectRatio, bool);
537 vtkBooleanMacro(UseExplicitAspectRatio, bool);
539
550 virtual vtkMatrix4x4* GetProjectionTransformMatrix(double aspect, double nearz, double farz);
551
563 double aspect, double nearz, double farz);
564
577 double aspect, double nearz, double farz);
578
587
589
597
599
607
613 virtual void Render(vtkRenderer*) {}
614
619
625
636 virtual void GetFrustumPlanes(double aspect, double planes[24]);
637
639
649 virtual void UpdateIdealShiftScale(double aspect);
650 vtkGetVector3Macro(FocalPointShift, double);
651 vtkGetMacro(FocalPointScale, double);
652 vtkGetVector3Macro(NearPlaneShift, double);
653 vtkGetMacro(NearPlaneScale, double);
654 vtkSetMacro(ShiftScaleThreshold, double);
655 vtkGetMacro(ShiftScaleThreshold, double);
657
659
665
671
678
682 virtual void UpdateViewport(vtkRenderer* vtkNotUsed(ren)) {}
683
685
688 vtkGetMacro(Stereo, int);
690
692
695 vtkSetMacro(LeftEye, int);
696 vtkGetMacro(LeftEye, int);
698
706
714
716
721 vtkSetMacro(FreezeFocalPoint, bool);
722 vtkGetMacro(FreezeFocalPoint, bool);
724
726
729 vtkSetMacro(UseScissor, bool);
730 vtkGetMacro(UseScissor, bool);
732
734
737 void SetScissorRect(vtkRecti scissorRect);
738 void GetScissorRect(vtkRecti& scissorRect);
740
742
745 vtkGetObjectMacro(Information, vtkInformation);
748
749protected:
751 ~vtkCamera() override;
752
754
758 virtual void ComputeViewTransform();
760
764 virtual void ComputeProjectionTransform(double aspect, double nearz, double farz);
765
769 void ComputeCompositeProjectionTransform(double aspect, double nearz, double farz);
770
772
778
783
788
796
797 double WindowCenter[2];
798 double ObliqueAngles[2];
799 double FocalPoint[3];
800 double Position[3];
801 double ViewUp[3];
802 double ViewAngle;
803 double ClippingRange[2];
804 double EyeAngle;
809 double Thickness;
810 double Distance;
813 double ViewShear[3];
815
817
820 double ScreenTopRight[3];
821
823
826
828
830
833
836
839
844
846
847 double FocalDisk;
849
852 double NearPlaneShift[3];
855
858
859 // ViewingRaysMtime keeps track of camera modifications which will
860 // change the calculation of viewing rays for the camera before it is
861 // transformed to the camera's location and orientation.
865
867
868 // Arbitrary extra information associated with this camera.
870
871private:
872 vtkCamera(const vtkCamera&) = delete;
873 void operator=(const vtkCamera&) = delete;
874};
875
876#endif
supports function callbacks
bool UseExplicitProjectionTransformMatrix
Definition vtkCamera.h:835
void ComputeOffAxisProjectionFrustum()
Compute and use frustum using offaxis method.
vtkInformation * Information
Definition vtkCamera.h:869
virtual void SetInformation(vtkInformation *)
Set/Get the information object associated with this camera.
vtkMatrix4x4 * EyeTransformMatrix
Definition vtkCamera.h:827
double DirectionOfProjection[3]
Definition vtkCamera.h:811
double FocalPointShift[3]
Definition vtkCamera.h:850
void Roll(double angle)
Rotate the camera about the direction of projection.
vtkTypeBool ParallelProjection
Definition vtkCamera.h:805
virtual vtkMatrix4x4 * GetViewTransformMatrix()
For backward compatibility.
void ApplyTransform(vtkTransform *t)
Apply a transform to the camera.
void SetModelTransformMatrix(vtkMatrix4x4 *matrix)
Set/Get model transformation matrix.
double GetRoll()
Set the roll angle of the camera about the direction of projection.
double * GetOrientation()
Get the orientation of the camera.
vtkPerspectiveTransform * Transform
Definition vtkCamera.h:842
void ComputeCameraLightTransform()
friend class vtkCameraCallbackCommand
Definition vtkCamera.h:857
void SetViewUp(const double a[3])
Set/Get the view up direction for the camera.
Definition vtkCamera.h:84
vtkTransform * ViewTransform
Definition vtkCamera.h:840
double FocalDistance
Definition vtkCamera.h:848
void SetUserTransform(vtkHomogeneousTransform *transform)
In addition to the instance variables such as position and orientation, you can add an additional tra...
virtual void ComputeViewTransform()
These methods should only be used within vtkCamera.cxx.
double FocalPointScale
Definition vtkCamera.h:851
bool FreezeFocalPoint
Definition vtkCamera.h:863
void SetEyePosition(double eyePosition[3])
Set/Get the eye position (center point between two eyes).
void SetPosition(const double a[3])
Set/Get the position of the camera in world coordinates.
Definition vtkCamera.h:64
void Yaw(double angle)
Rotate the focal point about the view up vector, using the camera's position as the center of rotatio...
void SetRoll(double angle)
Set the roll angle of the camera about the direction of projection.
void PartialCopy(vtkCamera *source)
Copy the ivars.
void Elevation(double angle)
Rotate the camera about the cross product of the negative of the direction of projection and the view...
double EyeAngle
Definition vtkCamera.h:804
void Azimuth(double angle)
Rotate the camera about the view up vector centered at the focal point.
vtkHomogeneousTransform * UserTransform
Definition vtkCamera.h:831
void DeepCopy(vtkCamera *source)
Copy the properties of ‘source’ into ‘this’.
void Pitch(double angle)
Rotate the focal point about the cross product of the view up vector and the direction of projection,...
double * GetOrientationWXYZ()
Get the orientation of the camera.
vtkTypeBool UseOffAxisProjection
Definition vtkCamera.h:816
vtkMatrix4x4 * ExplicitProjectionTransformMatrix
Definition vtkCamera.h:834
void SetObliqueAngles(double alpha, double beta)
Get/Set the oblique viewing angles.
virtual vtkMatrix4x4 * GetProjectionTransformMatrix(vtkRenderer *ren)
Return the projection transform matrix, which converts from camera coordinates to viewport coordinate...
double NearPlaneScale
Definition vtkCamera.h:853
void SetParallelProjection(vtkTypeBool flag)
Set/Get the value of the ParallelProjection instance variable.
void ComputeModelViewMatrix()
Compute model view matrix for the camera.
int LeftEye
Definition vtkCamera.h:808
double EyeSeparation
Definition vtkCamera.h:822
double ViewPlaneNormal[3]
Definition vtkCamera.h:812
virtual void GetFrustumPlanes(double aspect, double planes[24])
Get the plane equations that bound the view frustum.
void Zoom(double factor)
In perspective mode, decrease the view angle by the specified factor.
void SetPosition(double x, double y, double z)
Set/Get the position of the camera in world coordinates.
void SetViewUp(double vx, double vy, double vz)
Set/Get the view up direction for the camera.
vtkMatrix4x4 * ModelTransformMatrix
Definition vtkCamera.h:829
void ShallowCopy(vtkCamera *source)
Copy the properties of ‘source’ into ‘this’.
double FocalDisk
Definition vtkCamera.h:847
void ComputeViewPlaneNormal()
This method is called automatically whenever necessary, it should never be used outside of vtkCamera....
double Distance
Definition vtkCamera.h:810
bool UseExplicitAspectRatio
Definition vtkCamera.h:838
void SetModelTransformMatrix(const double elements[16])
Set model transformation matrix.
void SetClippingRange(double dNear, double dFar)
Set/Get the location of the near and far clipping planes along the direction of projection.
virtual vtkMatrix4x4 * GetModelViewTransformMatrix()
Return the model view matrix of model view transform.
void SetThickness(double)
Set the distance between clipping planes.
void GetScissorRect(vtkRecti &scissorRect)
Set/Get the vtkRect value of the scissor.
double ScreenBottomLeft[3]
Definition vtkCamera.h:818
virtual void Render(vtkRenderer *)
This method causes the camera to set up whatever is required for viewing the scene.
Definition vtkCamera.h:613
void ViewingRaysModified()
Mark that something has changed which requires the view rays to be recomputed.
double ScreenBottomRight[3]
Definition vtkCamera.h:819
static vtkCamera * New()
Construct camera instance with its focal point at the origin, and position=(0,0,1).
void SetFocalPoint(const double a[3])
Set/Get the focal of the camera in world coordinates.
Definition vtkCamera.h:74
void SetEyeTransformMatrix(vtkMatrix4x4 *matrix)
Set/Get eye transformation matrix.
void GetEyePosition(double eyePosition[3])
Set/Get the eye position (center point between two eyes).
void SetDistance(double)
Move the focal point so that it is the specified distance from the camera position.
virtual vtkPerspectiveTransform * GetProjectionTransformObject(double aspect, double nearz, double farz)
Return the projection transform matrix, which converts from camera coordinates to viewport coordinate...
void SetWindowCenter(double x, double y)
Set/Get the center of the window in viewport coordinates.
void SetEyeTransformMatrix(const double elements[16])
Set the eye transform matrix.
double Thickness
Definition vtkCamera.h:809
void SetScissorRect(vtkRecti scissorRect)
Set/Get the vtkRect value of the scissor.
virtual vtkMatrix4x4 * GetCompositeProjectionTransformMatrix(double aspect, double nearz, double farz)
Return the concatenation of the ViewTransform and the ProjectionTransform.
void ComputeCompositeProjectionTransform(double aspect, double nearz, double farz)
These methods should only be used within vtkCamera.cxx.
double FocalPoint[3]
Definition vtkCamera.h:799
vtkMatrix4x4 * GetCameraLightTransformMatrix()
Returns a transformation matrix for a coordinate frame attached to the camera, where the camera is lo...
vtkRecti ScissorRect
Definition vtkCamera.h:866
vtkMatrix4x4 * WorldToScreenMatrix
Definition vtkCamera.h:824
vtkTransform * CameraLightTransform
Definition vtkCamera.h:843
bool UseScissor
Definition vtkCamera.h:864
double ViewShear[3]
Definition vtkCamera.h:813
void SetViewAngle(double angle)
Set/Get the camera view angle, which is the angular height of the camera view measured in degrees.
void GetEyePlaneNormal(double normal[3])
Get normal vector from eye to screen rotated by EyeTransformMatrix.
vtkTypeBool UseHorizontalViewAngle
Definition vtkCamera.h:814
void ComputeWorldToScreenMatrix()
Given screen screen top, bottom left and top right calculate screen rotation.
double ViewUp[3]
Definition vtkCamera.h:801
void OrthogonalizeViewUp()
Recompute the ViewUp vector to force it to be perpendicular to camera->focalpoint vector.
vtkTimeStamp WorldToScreenMatrixMTime
Definition vtkCamera.h:825
double ScreenTopRight[3]
Definition vtkCamera.h:820
void Dolly(double value)
Divide the camera's distance from the focal point by the given dolly value.
virtual void SetExplicitProjectionTransformMatrix(vtkMatrix4x4 *)
Set/get an explicit 4x4 projection matrix to use, rather than computing one from other state variable...
vtkMTimeType GetViewingRaysMTime()
Return the MTime that concerns recomputing the view rays of the camera.
void SetFocalPoint(double x, double y, double z)
Set/Get the focal of the camera in world coordinates.
void SetUseHorizontalViewAngle(vtkTypeBool flag)
Set/Get the value of the UseHorizontalViewAngle instance variable.
double ClippingRange[2]
Definition vtkCamera.h:803
~vtkCamera() override
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
void SetParallelScale(double scale)
Set/Get the scaling used for a parallel projection, i.e.
virtual vtkTransform * GetViewTransformObject()
For backward compatibility.
double ViewAngle
Definition vtkCamera.h:802
void SetViewShear(double d[3])
Set/get the shear transform of the viewing frustum.
double ParallelScale
Definition vtkCamera.h:806
vtkHomogeneousTransform * UserViewTransform
Definition vtkCamera.h:832
vtkPerspectiveTransform * ProjectionTransform
Definition vtkCamera.h:841
vtkCameraCallbackCommand * UserViewTransformCallbackCommand
Definition vtkCamera.h:856
virtual void UpdateViewport(vtkRenderer *vtkNotUsed(ren))
Update the viewport.
Definition vtkCamera.h:682
double ShiftScaleThreshold
Definition vtkCamera.h:854
virtual vtkTransform * GetModelViewTransformObject()
Return the model view transform.
virtual void ComputeProjectionTransform(double aspect, double nearz, double farz)
These methods should only be used within vtkCamera.cxx.
virtual vtkMatrix4x4 * GetProjectionTransformMatrix(double aspect, double nearz, double farz)
Return the projection transform matrix, which converts from camera coordinates to viewport coordinate...
double Position[3]
Definition vtkCamera.h:800
void SetUserViewTransform(vtkHomogeneousTransform *transform)
In addition to the instance variables such as position and orientation, you can add an additional tra...
void ComputeDistance()
These methods should only be used within vtkCamera.cxx.
double NearPlaneShift[3]
Definition vtkCamera.h:852
void SetViewShear(double dxdz, double dydz, double center)
Set/get the shear transform of the viewing frustum.
virtual void UpdateIdealShiftScale(double aspect)
The following methods are used to support view dependent methods for normalizing data (typically poin...
double ObliqueAngles[2]
Definition vtkCamera.h:798
vtkTransform * ModelViewTransform
Definition vtkCamera.h:845
double WindowCenter[2]
Definition vtkCamera.h:797
void SetClippingRange(const double a[2])
Set/Get the location of the near and far clipping planes along the direction of projection.
Definition vtkCamera.h:254
vtkTimeStamp ViewingRaysMTime
Definition vtkCamera.h:862
double ExplicitAspectRatio
Definition vtkCamera.h:837
superclass for homogeneous transformations
a simple class to control print indentation
Definition vtkIndent.h:34
Store vtkAlgorithm input/output information.
represent and manipulate 4x4 transformation matrices
describes a 4x4 matrix transformation
abstract specification for renderers
Definition vtkRenderer.h:67
record modification and/or execution time
describes linear transformations via a 4x4 matrix
int vtkTypeBool
Definition vtkABI.h:69
boost::graph_traits< vtkGraph * >::vertex_descriptor source(boost::graph_traits< vtkGraph * >::edge_descriptor e, vtkGraph *)
vtkTypeUInt32 vtkMTimeType
Definition vtkType.h:287
#define VTK_SIZEHINT(...)