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vtkViewport Class Reference

#include <vtkViewport.h>

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Detailed Description

abstract specification for Viewports

Date:
2002/12/26 18:24:22
Revision:
1.40

vtkViewport provides an abstract specification for Viewports. A Viewport is an object that controls the rendering process for objects. Rendering is the process of converting geometry, a specification for lights, and a camera view into an image. vtkViewport also performs coordinate transformation between world coordinates, view coordinates (the computer graphics rendering coordinate system), and display coordinates (the actual screen coordinates on the display device). Certain advanced rendering features such as two-sided lighting can also be controlled.

See also:
vtkWindow vtkImager vtkRenderer
Created by:
  • Martin, Ken
CVS contributions (if > 5%):
  • Martin, Ken (50%)
  • Schroeder, Will (20%)
  • Turek, Matt (8%)
CVS logs (CVSweb):
  • .cxx (/Common/vtkViewport.cxx)
  • .h (/Common/vtkViewport.h)
Tests:
vtkViewport (Tests)

Definition at line 61 of file vtkViewport.h.

Public Types

typedef vtkObject Superclass

Public Methods

virtual const char * GetClassName ()
virtual int IsA (const char *type)
void PrintSelf (ostream &os, vtkIndent indent)
void AddProp (vtkProp *)
vtkPropCollectionGetProps ()
void RemoveProp (vtkProp *)
void RemoveAllProps (void)
virtual float * GetCenter ()
virtual int IsInViewport (int x, int y)
virtual vtkWindowGetVTKWindow ()=0
void SetStartRenderMethod (void(*f)(void *), void *arg)
void SetEndRenderMethod (void(*f)(void *), void *arg)
void SetStartRenderMethodArgDelete (void(*f)(void *))
void SetEndRenderMethodArgDelete (void(*f)(void *))
virtual void DisplayToView ()
virtual void ViewToDisplay ()
virtual void WorldToView ()
virtual void ViewToWorld ()
void DisplayToWorld ()
void WorldToDisplay ()
virtual vtkAssemblyPathPickProp (float selectionX, float selectionY)=0
virtual float GetPickedZ ()=0
void AddActor2D (vtkProp *p)
void RemoveActor2D (vtkProp *p)
vtkActor2DCollectionGetActors2D ()
virtual void SetBackground (float, float, float)
virtual void SetBackground (float[3])
virtual float * GetBackground ()
virtual void GetBackground (float data[3])
virtual void SetAspect (float, float)
void SetAspect (float[2])
virtual float * GetAspect ()
virtual void GetAspect (float data[2])
void ComputeAspect ()
virtual void SetPixelAspect (float, float)
void SetPixelAspect (float[2])
virtual float * GetPixelAspect ()
virtual void GetPixelAspect (float data[2])
virtual void SetViewport (float, float, float, float)
virtual void SetViewport (float[4])
virtual float * GetViewport ()
virtual void GetViewport (float data[4])
virtual void SetDisplayPoint (float, float, float)
virtual void SetDisplayPoint (float[3])
virtual float * GetDisplayPoint ()
virtual void GetDisplayPoint (float data[3])
void GetDisplayPoint (double a[3])
virtual void SetViewPoint (float, float, float)
virtual void SetViewPoint (float[3])
virtual float * GetViewPoint ()
virtual void GetViewPoint (float data[3])
virtual void SetWorldPoint (float, float, float, float)
virtual void SetWorldPoint (float[4])
virtual float * GetWorldPoint ()
virtual void GetWorldPoint (float data[4])
void GetWorldPoint (double a[4])
virtual void LocalDisplayToDisplay (float &x, float &y)
virtual void DisplayToNormalizedDisplay (float &u, float &v)
virtual void NormalizedDisplayToViewport (float &x, float &y)
virtual void ViewportToNormalizedViewport (float &u, float &v)
virtual void NormalizedViewportToView (float &x, float &y, float &z)
virtual void ViewToWorld (float &, float &, float &)
virtual void DisplayToLocalDisplay (float &x, float &y)
virtual void NormalizedDisplayToDisplay (float &u, float &v)
virtual void ViewportToNormalizedDisplay (float &x, float &y)
virtual void NormalizedViewportToViewport (float &u, float &v)
virtual void ViewToNormalizedViewport (float &x, float &y, float &z)
virtual void WorldToView (float &, float &, float &)
int * GetSize ()
int * GetOrigin ()
void GetTiledSize (int *width, int *height)
vtkAssemblyPathPickPropFrom (float selectionX, float selectionY, vtkPropCollection *)
virtual float GetPickX ()
virtual float GetPickY ()
virtual int GetIsPicking ()

Static Public Methods

int IsTypeOf (const char *type)
vtkViewport * SafeDownCast (vtkObject *o)

Protected Methods

 vtkViewport ()
 ~vtkViewport ()
virtual void DevicePickRender ()=0
virtual void StartPick (unsigned int pickFromSize)=0
virtual void UpdatePickId ()=0
virtual void DonePick ()=0
virtual unsigned int GetPickedId ()=0

Protected Attributes

vtkAssemblyPathPickedProp
vtkPropCollectionPickFromProps
int IsPicking
unsigned int CurrentPickId
float PickX
float PickY
vtkPropCollectionProps
vtkActor2DCollectionActors2D
vtkWindowVTKWindow
float Background [3]
float Viewport [4]
float Aspect [2]
float PixelAspect [2]
float Center [2]
unsigned long StartTag
unsigned long EndTag
int Size [2]
int Origin [2]
float DisplayPoint [3]
float ViewPoint [3]
float WorldPoint [4]


Member Typedef Documentation

typedef vtkObject vtkViewport::Superclass
 

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

Definition at line 64 of file vtkViewport.h.


Constructor & Destructor Documentation

vtkViewport::vtkViewport   [protected]
 

vtkViewport::~vtkViewport   [protected]
 


Member Function Documentation

virtual const char* vtkViewport::GetClassName   [virtual]
 

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

int vtkViewport::IsTypeOf const char *    type [static]
 

Return 1 if this class type is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

virtual int vtkViewport::IsA const char *    type [virtual]
 

Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

vtkViewport* vtkViewport::SafeDownCast vtkObject   o [static]
 

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

void vtkViewport::PrintSelf ostream &    os,
vtkIndent    indent
[virtual]
 

Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObject.

Reimplemented in vtkMesaRenderer, vtkOpenGLRenderer, and vtkRenderer.

void vtkViewport::AddProp vtkProp  
 

Add a prop to the list of props. Prop is the superclass of all actors, volumes, 2D actors, composite props etc.

Referenced by vtkRenderer::AddActor(), and vtkRenderer::AddVolume().

vtkPropCollection* vtkViewport::GetProps   [inline]
 

Return any props in this viewport.

Definition at line 72 of file vtkViewport.h.

void vtkViewport::RemoveProp vtkProp  
 

Remove an actor from the list of actors.

Referenced by vtkRenderer::RemoveActor(), and vtkRenderer::RemoveVolume().

void vtkViewport::RemoveAllProps void   
 

Remove all actors from the list of actors.

void vtkViewport::AddActor2D vtkProp   p [inline]
 

Add/Remove different types of props to the renderer. These methods are all synonyms to AddProp and RemoveProp. They are here for convenience and backwards compatibility.

Definition at line 84 of file vtkViewport.h.

void vtkViewport::RemoveActor2D vtkProp   p
 

Add/Remove different types of props to the renderer. These methods are all synonyms to AddProp and RemoveProp. They are here for convenience and backwards compatibility.

vtkActor2DCollection* vtkViewport::GetActors2D  
 

Add/Remove different types of props to the renderer. These methods are all synonyms to AddProp and RemoveProp. They are here for convenience and backwards compatibility.

virtual void vtkViewport::SetBackground float   ,
float   ,
float   
[virtual]
 

Set/Get the background color of the rendering screen using an rgb color specification.

virtual void vtkViewport::SetBackground float   [3] [virtual]
 

Set/Get the background color of the rendering screen using an rgb color specification.

virtual float* vtkViewport::GetBackground   [virtual]
 

Set/Get the background color of the rendering screen using an rgb color specification.

virtual void vtkViewport::GetBackground float    data[3] [virtual]
 

Set/Get the background color of the rendering screen using an rgb color specification.

virtual void vtkViewport::SetAspect float   ,
float   
[virtual]
 

Set the aspect ratio of the rendered image. This is computed automatically and should not be set by the user.

void vtkViewport::SetAspect float   [2]
 

Set the aspect ratio of the rendered image. This is computed automatically and should not be set by the user.

virtual float* vtkViewport::GetAspect   [virtual]
 

Set the aspect ratio of the rendered image. This is computed automatically and should not be set by the user.

virtual void vtkViewport::GetAspect float    data[2] [virtual]
 

Set the aspect ratio of the rendered image. This is computed automatically and should not be set by the user.

void vtkViewport::ComputeAspect  
 

Set the aspect ratio of the rendered image. This is computed automatically and should not be set by the user.

virtual void vtkViewport::SetPixelAspect float   ,
float   
[virtual]
 

Set the aspect ratio of a pixel in the rendered image. This factor permits the image to rendered anisotropically (i.e., stretched in one direction or the other).

void vtkViewport::SetPixelAspect float   [2]
 

Set the aspect ratio of a pixel in the rendered image. This factor permits the image to rendered anisotropically (i.e., stretched in one direction or the other).

virtual float* vtkViewport::GetPixelAspect   [virtual]
 

Set the aspect ratio of a pixel in the rendered image. This factor permits the image to rendered anisotropically (i.e., stretched in one direction or the other).

virtual void vtkViewport::GetPixelAspect float    data[2] [virtual]
 

Set the aspect ratio of a pixel in the rendered image. This factor permits the image to rendered anisotropically (i.e., stretched in one direction or the other).

virtual void vtkViewport::SetViewport float   ,
float   ,
float   ,
float   
[virtual]
 

Specify the viewport for the Viewport to draw in the rendering window. Coordinates are expressed as (xmin,ymin,xmax,ymax), where each coordinate is 0 <= coordinate <= 1.0.

virtual void vtkViewport::SetViewport float   [4] [virtual]
 

Specify the viewport for the Viewport to draw in the rendering window. Coordinates are expressed as (xmin,ymin,xmax,ymax), where each coordinate is 0 <= coordinate <= 1.0.

virtual float* vtkViewport::GetViewport   [virtual]
 

Specify the viewport for the Viewport to draw in the rendering window. Coordinates are expressed as (xmin,ymin,xmax,ymax), where each coordinate is 0 <= coordinate <= 1.0.

virtual void vtkViewport::GetViewport float    data[4] [virtual]
 

Specify the viewport for the Viewport to draw in the rendering window. Coordinates are expressed as (xmin,ymin,xmax,ymax), where each coordinate is 0 <= coordinate <= 1.0.

virtual void vtkViewport::SetDisplayPoint float   ,
float   ,
float   
[virtual]
 

Set/get a point location in display (or screen) coordinates. The lower left corner of the window is the origin and y increases as you go up the screen.

virtual void vtkViewport::SetDisplayPoint float   [3] [virtual]
 

Set/get a point location in display (or screen) coordinates. The lower left corner of the window is the origin and y increases as you go up the screen.

virtual float* vtkViewport::GetDisplayPoint   [virtual]
 

Set/get a point location in display (or screen) coordinates. The lower left corner of the window is the origin and y increases as you go up the screen.

virtual void vtkViewport::GetDisplayPoint float    data[3] [virtual]
 

Set/get a point location in display (or screen) coordinates. The lower left corner of the window is the origin and y increases as you go up the screen.

void vtkViewport::GetDisplayPoint double    a[3] [inline]
 

Set/get a point location in display (or screen) coordinates. The lower left corner of the window is the origin and y increases as you go up the screen.

Definition at line 126 of file vtkViewport.h.

virtual void vtkViewport::SetViewPoint float   ,
float   ,
float   
[virtual]
 

Specify a point location in view coordinates. The origin is in the middle of the viewport and it extends from -1 to 1 in all three dimensions.

virtual void vtkViewport::SetViewPoint float   [3] [virtual]
 

Specify a point location in view coordinates. The origin is in the middle of the viewport and it extends from -1 to 1 in all three dimensions.

virtual float* vtkViewport::GetViewPoint   [virtual]
 

Specify a point location in view coordinates. The origin is in the middle of the viewport and it extends from -1 to 1 in all three dimensions.

virtual void vtkViewport::GetViewPoint float    data[3] [virtual]
 

Specify a point location in view coordinates. The origin is in the middle of the viewport and it extends from -1 to 1 in all three dimensions.

virtual void vtkViewport::SetWorldPoint float   ,
float   ,
float   ,
float   
[virtual]
 

Specify a point location in world coordinates. This method takes homogeneous coordinates.

virtual void vtkViewport::SetWorldPoint float   [4] [virtual]
 

Specify a point location in world coordinates. This method takes homogeneous coordinates.

virtual float* vtkViewport::GetWorldPoint   [virtual]
 

Specify a point location in world coordinates. This method takes homogeneous coordinates.

virtual void vtkViewport::GetWorldPoint float    data[4] [virtual]
 

Specify a point location in world coordinates. This method takes homogeneous coordinates.

void vtkViewport::GetWorldPoint double    a[4] [inline]
 

Specify a point location in world coordinates. This method takes homogeneous coordinates.

Definition at line 147 of file vtkViewport.h.

virtual float* vtkViewport::GetCenter   [virtual]
 

Return the center of this viewport in display coordinates.

virtual int vtkViewport::IsInViewport int    x,
int    y
[virtual]
 

Is a given display point in this Viewport's viewport.

virtual vtkWindow* vtkViewport::GetVTKWindow   [pure virtual]
 

Return the vtkWindow that owns this vtkViewport.

Implemented in vtkRenderer.

void vtkViewport::SetStartRenderMethod void(*    f)(void *),
void *    arg
 

Specify a function to be called before rendering process begins. Function will be called with argument provided.

void vtkViewport::SetEndRenderMethod void(*    f)(void *),
void *    arg
 

Specify a function to be called when rendering process completes. Function will be called with argument provided.

void vtkViewport::SetStartRenderMethodArgDelete void(*    f)(void *)
 

Set the arg delete method. This is used to free user memory.

void vtkViewport::SetEndRenderMethodArgDelete void(*    f)(void *)
 

Set the arg delete method. This is used to free user memory.

virtual void vtkViewport::DisplayToView   [virtual]
 

Convert display coordinates to view coordinates.

virtual void vtkViewport::ViewToDisplay   [virtual]
 

Convert view coordinates to display coordinates.

virtual void vtkViewport::WorldToView   [virtual]
 

Convert world point coordinates to view coordinates.

Reimplemented in vtkRenderer.

virtual void vtkViewport::ViewToWorld   [virtual]
 

Convert view point coordinates to world coordinates.

Reimplemented in vtkRenderer.

void vtkViewport::DisplayToWorld   [inline]
 

Convert display (or screen) coordinates to world coordinates.

Definition at line 192 of file vtkViewport.h.

void vtkViewport::WorldToDisplay   [inline]
 

Convert world point coordinates to display (or screen) coordinates.

Definition at line 195 of file vtkViewport.h.

virtual void vtkViewport::LocalDisplayToDisplay float &    x,
float &    y
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::DisplayToNormalizedDisplay float &    u,
float &    v
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::NormalizedDisplayToViewport float &    x,
float &    y
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::ViewportToNormalizedViewport float &    u,
float &    v
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::NormalizedViewportToView float &    x,
float &    y,
float &    z
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::ViewToWorld float &   ,
float &   ,
float &   
[inline, virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

Reimplemented in vtkRenderer.

Definition at line 208 of file vtkViewport.h.

virtual void vtkViewport::DisplayToLocalDisplay float &    x,
float &    y
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::NormalizedDisplayToDisplay float &    u,
float &    v
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::ViewportToNormalizedDisplay float &    x,
float &    y
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::NormalizedViewportToViewport float &    u,
float &    v
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::ViewToNormalizedViewport float &    x,
float &    y,
float &    z
[virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

virtual void vtkViewport::WorldToView float &   ,
float &   ,
float &   
[inline, virtual]
 

These methods map from one coordinate system to another. They are primarily used by the vtkCoordinate object and are often strung together. These methods return valid information only if the window has been realized (e.g., GetSize() returns something other than (0,0)).

Reimplemented in vtkRenderer.

Definition at line 214 of file vtkViewport.h.

int* vtkViewport::GetSize  
 

Get the size and origin of the viewport in display coordinates. Note: if the window has not yet been realized, GetSize() and GetOrigin() return (0,0).

int* vtkViewport::GetOrigin  
 

Get the size and origin of the viewport in display coordinates. Note: if the window has not yet been realized, GetSize() and GetOrigin() return (0,0).

void vtkViewport::GetTiledSize int *    width,
int *    height
 

Get the size and origin of the viewport in display coordinates. Note: if the window has not yet been realized, GetSize() and GetOrigin() return (0,0).

virtual vtkAssemblyPath* vtkViewport::PickProp float    selectionX,
float    selectionY
[pure virtual]
 

Return the Prop that has the highest z value at the given x, y position in the viewport. Basically, the top most prop that renders the pixel at selectionX, selectionY will be returned. If no Props are there NULL is returned. This method selects from the Viewports Prop list.

Implemented in vtkRenderer.

vtkAssemblyPath* vtkViewport::PickPropFrom float    selectionX,
float    selectionY,
vtkPropCollection  
 

Same as PickProp with two arguments, but selects from the given collection of Props instead of the Renderers props. Make sure the Props in the collection are in this renderer.

virtual float vtkViewport::GetPickX   [virtual]
 

Methods used to return the pick (x,y) in local display coordinates (i.e., it's that same as selectionX and selectionY).

virtual float vtkViewport::GetPickY   [virtual]
 

Methods used to return the pick (x,y) in local display coordinates (i.e., it's that same as selectionX and selectionY).

virtual int vtkViewport::GetIsPicking   [virtual]
 

Methods used to return the pick (x,y) in local display coordinates (i.e., it's that same as selectionX and selectionY).

virtual float vtkViewport::GetPickedZ   [pure virtual]
 

Return the Z value for the last picked Prop.

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.

virtual void vtkViewport::DevicePickRender   [protected, pure virtual]
 

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.

virtual void vtkViewport::StartPick unsigned int    pickFromSize [protected, pure virtual]
 

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.

virtual void vtkViewport::UpdatePickId   [protected, pure virtual]
 

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.

virtual void vtkViewport::DonePick   [protected, pure virtual]
 

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.

virtual unsigned int vtkViewport::GetPickedId   [protected, pure virtual]
 

Implemented in vtkMesaRenderer, and vtkOpenGLRenderer.


Member Data Documentation

vtkAssemblyPath* vtkViewport::PickedProp [protected]
 

Definition at line 278 of file vtkViewport.h.

vtkPropCollection* vtkViewport::PickFromProps [protected]
 

Definition at line 279 of file vtkViewport.h.

int vtkViewport::IsPicking [protected]
 

Definition at line 281 of file vtkViewport.h.

unsigned int vtkViewport::CurrentPickId [protected]
 

Definition at line 282 of file vtkViewport.h.

float vtkViewport::PickX [protected]
 

Definition at line 283 of file vtkViewport.h.

float vtkViewport::PickY [protected]
 

Definition at line 284 of file vtkViewport.h.

vtkPropCollection* vtkViewport::Props [protected]
 

Definition at line 287 of file vtkViewport.h.

vtkActor2DCollection* vtkViewport::Actors2D [protected]
 

Definition at line 288 of file vtkViewport.h.

vtkWindow* vtkViewport::VTKWindow [protected]
 

Definition at line 289 of file vtkViewport.h.

float vtkViewport::Background[3] [protected]
 

Definition at line 290 of file vtkViewport.h.

float vtkViewport::Viewport[4] [protected]
 

Definition at line 291 of file vtkViewport.h.

float vtkViewport::Aspect[2] [protected]
 

Definition at line 292 of file vtkViewport.h.

float vtkViewport::PixelAspect[2] [protected]
 

Definition at line 293 of file vtkViewport.h.

float vtkViewport::Center[2] [protected]
 

Definition at line 294 of file vtkViewport.h.

unsigned long vtkViewport::StartTag [protected]
 

Definition at line 296 of file vtkViewport.h.

unsigned long vtkViewport::EndTag [protected]
 

Definition at line 297 of file vtkViewport.h.

int vtkViewport::Size[2] [protected]
 

Definition at line 299 of file vtkViewport.h.

int vtkViewport::Origin[2] [protected]
 

Definition at line 300 of file vtkViewport.h.

float vtkViewport::DisplayPoint[3] [protected]
 

Definition at line 301 of file vtkViewport.h.

float vtkViewport::ViewPoint[3] [protected]
 

Definition at line 302 of file vtkViewport.h.

float vtkViewport::WorldPoint[4] [protected]
 

Definition at line 303 of file vtkViewport.h.


The documentation for this class was generated from the following file: