VTK  9.3.0
vtkFollower.h
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1 // SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
2 // SPDX-License-Identifier: BSD-3-Clause
32 #ifndef vtkFollower_h
33 #define vtkFollower_h
34 
35 #include "vtkActor.h"
36 #include "vtkRenderingCoreModule.h" // For export macro
37 
38 VTK_ABI_NAMESPACE_BEGIN
39 class vtkCamera;
40 
41 class VTKRENDERINGCORE_EXPORT vtkFollower : public vtkActor
42 {
43 public:
44  vtkTypeMacro(vtkFollower, vtkActor);
45  void PrintSelf(ostream& os, vtkIndent indent) override;
46 
50  static vtkFollower* New();
51 
53 
57  virtual void SetCamera(vtkCamera*);
58  vtkGetObjectMacro(Camera, vtkCamera);
60 
62 
67  int RenderOpaqueGeometry(vtkViewport* viewport) override;
69  virtual void Render(vtkRenderer* ren);
71 
76 
81  void ComputeMatrix() override;
82 
86  void ShallowCopy(vtkProp* prop) override;
87 
88 protected:
90  ~vtkFollower() override;
91 
94 
95  // Internal matrices to avoid New/Delete for performance reasons
97 
98 private:
99  vtkFollower(const vtkFollower&) = delete;
100  void operator=(const vtkFollower&) = delete;
101 
102  // hide the two parameter Render() method from the user and the compiler.
103  void Render(vtkRenderer*, vtkMapper*) override {}
104 };
105 
106 VTK_ABI_NAMESPACE_END
107 #endif
represents an object (geometry & properties) in a rendered scene
Definition: vtkActor.h:50
virtual void Render(vtkRenderer *, vtkMapper *)
This causes the actor to be rendered.
Definition: vtkActor.h:91
a virtual camera for 3D rendering
Definition: vtkCamera.h:50
a subclass of actor that always faces the camera
Definition: vtkFollower.h:42
int RenderTranslucentPolygonalGeometry(vtkViewport *viewport) override
This causes the actor to be rendered.
static vtkFollower * New()
Creates a follower with no camera set.
void ComputeMatrix() override
Generate the matrix based on ivars.
int RenderOpaqueGeometry(vtkViewport *viewport) override
This causes the actor to be rendered.
vtkActor * Device
Definition: vtkFollower.h:93
void ReleaseGraphicsResources(vtkWindow *) override
Release any graphics resources associated with this vtkProp3DFollower.
void PrintSelf(ostream &os, vtkIndent indent) override
Methods invoked by print to print information about the object including superclasses.
~vtkFollower() override
virtual void Render(vtkRenderer *ren)
This causes the actor to be rendered.
vtkCamera * Camera
Definition: vtkFollower.h:92
virtual void SetCamera(vtkCamera *)
Set/Get the camera to follow.
vtkMatrix4x4 * InternalMatrix
Definition: vtkFollower.h:96
void ShallowCopy(vtkProp *prop) override
Shallow copy of a follower.
a simple class to control print indentation
Definition: vtkIndent.h:38
abstract class specifies interface to map data to graphics primitives
Definition: vtkMapper.h:86
represent and manipulate 4x4 transformation matrices
Definition: vtkMatrix4x4.h:40
abstract superclass for all actors, volumes and annotations
Definition: vtkProp.h:55
abstract specification for renderers
Definition: vtkRenderer.h:71
abstract specification for Viewports
Definition: vtkViewport.h:54
window superclass for vtkRenderWindow
Definition: vtkWindow.h:37