Defines a viewport without any visible window (frame). More...

Inheritance diagram for cadex::ModelPrs_OffscreenViewPort:

Public Types
typedef cadex::internal::ModelPrs_OffscreenViewPortImpl	ImplType

Public Member Functions
	ModelPrs_OffscreenViewPort ()
	Constructor.

bool	AttachToScene (const ModelPrs_Scene &theScene)
	Attaches to ModelPrs_Scene.

void	Resize (unsigned int theWidth, unsigned int theHeight)
	Resizes ViewPort.

bool	GrabToImage (const Base_UTF16String &thePath) const
	Grab to image in specified thePath.

ModelData_PixMap	GrabToPixMap () const
	Grab to pixmap.

void	FitAll ()
	Fit content to ViewPort size.

void	FitBox (const ModelData_Box &theBox)
	Fit content to box.

void	RotateToAngle (ModelPrs_AxisType theType, double theAngle)
	Rotate to angle around specified Axis.

const ModelPrs_BackgroundStyle &	BackgroundStyle () const
	Returns a background style.

void	SetBackgroundStyle (const ModelPrs_BackgroundStyle &theStyle)
	Sets a background style.

const ModelPrs_ViewCubeStyle &	ViewCubeStyle () const
	Sets a view cube style.

void	SetViewCubeStyle (const ModelPrs_ViewCubeStyle &theStyle)
	Returns a view cube style.

const ModelData_Box2d &	ViewCubeGeometry () const
	Returns a view cube geometry.

void	SetViewCubeGeometry (const ModelData_Box2d &theBox)
	Sets a view cube geometry.

bool	ViewCubeEnabled () const
	Return a view cube enabled state.

void	SetViewCubeEnabled (bool theEnabled)
	Sets a visibility of view cube.

ModelPrs_CameraProjectionType	CameraProjectionType () const
	Returns a camera projection type.

void	SetCameraProjectionType (ModelPrs_CameraProjectionType theType)
	Sets a camera projection type.

void	SetCameraPositionType (ModelPrs_CameraPositionType theOrientation)
	Sets a camera position type.

void	SetCameraView (const ModelData_Point &thePosition, const ModelData_Point &theTarget, const ModelData_Direction &theUp)
	Sets a custom camera position.

ModelPrs_Exploder	Exploder ()
	Returns object to manage model explosion.

Public Member Functions inherited from cadex::Base_PublicObject
void	Nullify ()
	Resets reference to implementation object.

bool	IsNull () const
	Returns true if the object is nullified.

	operator bool () const
	Casts the object to the bool type.

internal::Base_HandledObject *	Impl () const
	Return a handle to backend (reserved for internal use).

Additional Inherited Members
Protected Member Functions inherited from cadex::Base_PublicObject
	Base_PublicObject (const internal::Base_HandledObject *theObject)
	Constructor (reserved for internal use).

template<typename T >
T *	GetOrCreateImpl ()
	Reserved for internal use.

Detailed Description

Defines a viewport without any visible window (frame).

Warning: This class is a part of Visualization Toolkit add-on, which is licensed separately from the base CAD Exchanger SDK.

The off-screen component encapsulates an unvisible viewport which is used to display objects in 3D space.

See also: Viewport

The following code snippet demonstrates how to use this for image generations:

ModelPrs_Scene aScene;
aScene.AddRoot (aNode);
 
ModelPrs_OffscreenViewPort aViewport;
aViewport.Resize (800, 600);
aViewport.AttachToScene (aScene);
 
aScene.Update();
aScene.Wait();
 
aViewPort.GrabToImage ("model.png");

An off-screen viewport contains a shared pointer to its internal implementation, so simple copying an object will just copy a shared pointer. Therefore any modification of the copied object will propagate to original object.

See also: Using pimpl pattern

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

Member Function Documentation

◆ AttachToScene()

bool cadex::ModelPrs_OffscreenViewPort::AttachToScene ( const ModelPrs_Scene & theScene )

Attaches to ModelPrs_Scene.

Scene will notifies attached ViewPort about changes and it will do redraw.

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

◆ BackgroundStyle()

const ModelPrs_BackgroundStyle & cadex::ModelPrs_OffscreenViewPort::BackgroundStyle ( ) const

Returns a background style.

See also: SetBackgroundStyle

◆ CameraProjectionType()

ModelPrs_CameraProjectionType cadex::ModelPrs_OffscreenViewPort::CameraProjectionType ( ) const

Returns a camera projection type.

See also: SetCameraProjectionType

◆ GrabToImage()

bool cadex::ModelPrs_OffscreenViewPort::GrabToImage ( const Base_UTF16String & thePath ) const

Grab to image in specified thePath.

Requires to provide a full path to output file including extension:

ModelPrs_OffscreenViewPort aViewPort;
...
aViewPort.GrabToImage ("test.png");

The file name extension must be one of .png, .jpg, .bmp, .gif. The image size will equal to ViewPort size. This image size manages by Resize():

aViewPort.Resize (800, 600);

See also: Resize()

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

◆ GrabToPixMap()

ModelData_PixMap cadex::ModelPrs_OffscreenViewPort::GrabToPixMap ( ) const

Grab to pixmap.

The buffer size will equal ViewPort's size (width * height).

See also: Resize()

◆ Resize()

void cadex::ModelPrs_OffscreenViewPort::Resize	(	unsigned int	theWidth,
		unsigned int	theHeight
	)

Resizes ViewPort.

Both values must be more then zero.

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

◆ SetBackgroundStyle()

void cadex::ModelPrs_OffscreenViewPort::SetBackgroundStyle ( const ModelPrs_BackgroundStyle & theStyle )

Sets a background style.

See also: BackgroundStyle

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

◆ SetCameraProjectionType()

void cadex::ModelPrs_OffscreenViewPort::SetCameraProjectionType ( ModelPrs_CameraProjectionType theType )

Sets a camera projection type.

See also: CameraProjectionType()

Examples: visualization/offscreen/Program.cs, and visualization/offscreen/main.cxx.

◆ SetViewCubeStyle()

void cadex::ModelPrs_OffscreenViewPort::SetViewCubeStyle ( const ModelPrs_ViewCubeStyle & theStyle )

Returns a view cube style.

See also: ViewCubeStyle

◆ ViewCubeStyle()

const ModelPrs_ViewCubeStyle & cadex::ModelPrs_OffscreenViewPort::ViewCubeStyle ( ) const

Sets a view cube style.

See also: SetViewCubeStyle

Public Types

Public Member Functions

Additional Inherited Members