vtkTerrainContourLineInterpolator Class Reference

#include <vtkTerrainContourLineInterpolator.h>

Inheritance diagram for vtkTerrainContourLineInterpolator:

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Collaboration diagram for vtkTerrainContourLineInterpolator:

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List of all members.

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Detailed Description

Contour interpolator for DEM data.

vtkTerrainContourLineInterpolator interpolates nodes on height field data. The class is meant to be used in conjunciton with a vtkContourWidget, enabling you to draw paths on terrain data. The class internally uses a vtkProjectedTerrainPath. Users can set kind of interpolation desired between two node points by setting the modes of the this filter. For instance:

 contourRepresentation->SetLineInterpolator(interpolator);
 interpolator->SetImageData( demDataFile );
 interpolator->GetProjector()->SetProjectionModeToHug();
 interpolator->SetHeightOffset(25.0);

You are required to set the ImageData to this class as the height-field image.

See also:

vtkTerrainDataPointPlacer vtkProjectedTerrainPath

Tests:

vtkTerrainContourLineInterpolator (Tests)

Definition at line 51 of file vtkTerrainContourLineInterpolator.h.

typedef vtkContourLineInterpolator	Superclass
static int	IsTypeOf (const char *type)
static vtkTerrainContourLineInterpolator *	SafeDownCast (vtkObject *o)
virtual const char *	GetClassName ()
virtual int	IsA (const char *type)
void	PrintSelf (ostream &os, vtkIndent indent)
Public Member Functions
virtual int	InterpolateLine (vtkRenderer *ren, vtkContourRepresentation *rep, int idx1, int idx2)
virtual int	UpdateNode (vtkRenderer *, vtkContourRepresentation *, double *vtkNotUsed(node), int vtkNotUsed(idx))
virtual void	SetImageData (vtkImageData *)
virtual vtkImageData *	GetImageData ()
virtual vtkProjectedTerrainPath *	GetProjector ()
Static Public Member Functions
static vtkTerrainContourLineInterpolator *	New ()
Protected Member Functions
	vtkTerrainContourLineInterpolator ()
	~vtkTerrainContourLineInterpolator ()
Protected Attributes
vtkImageData *	ImageData
vtkProjectedTerrainPath *	Projector

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Member Typedef Documentation

typedef vtkContourLineInterpolator vtkTerrainContourLineInterpolator::Superclass

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

Definition at line 61 of file vtkTerrainContourLineInterpolator.h.

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Constructor & Destructor Documentation

vtkTerrainContourLineInterpolator::vtkTerrainContourLineInterpolator

(

)

[protected]

vtkTerrainContourLineInterpolator::~vtkTerrainContourLineInterpolator

(

)

[protected]

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Member Function Documentation

static vtkTerrainContourLineInterpolator* vtkTerrainContourLineInterpolator::New

(

)

[static]

Instantiate this class.

Reimplemented from vtkObject.

virtual const char* vtkTerrainContourLineInterpolator::GetClassName

(

)

[virtual]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

static int vtkTerrainContourLineInterpolator::IsTypeOf

(

const char *

type

)

[static]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

virtual int vtkTerrainContourLineInterpolator::IsA

(

const char *

type

)

[virtual]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

static vtkTerrainContourLineInterpolator* vtkTerrainContourLineInterpolator::SafeDownCast

(

vtkObject *

o

)

[static]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

void vtkTerrainContourLineInterpolator::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)			[virtual]

Standard methods for instances of this class.

Reimplemented from vtkContourLineInterpolator.

virtual int vtkTerrainContourLineInterpolator::InterpolateLine	(	vtkRenderer *	ren,
		vtkContourRepresentation *	rep,
		int	idx1,
		int	idx2
	)			[virtual]

Interpolate to create lines between contour nodes idx1 and idx2. Depending on the projection mode, the interpolated line may either hug the terrain, just connect the two points with a straight line or a non-occluded interpolation. Used internally by vtkContourRepresentation.

Implements vtkContourLineInterpolator.

virtual int vtkTerrainContourLineInterpolator::UpdateNode	(	vtkRenderer *	,
		vtkContourRepresentation *	,
		double *	vtkNotUsednode,
		int	vtkNotUsedidx
	)			[virtual]

The interpolator is given a chance to update the node. Used internally by vtkContourRepresentation Returns 0 if the node (world position) is unchanged.

Reimplemented from vtkContourLineInterpolator.

virtual void vtkTerrainContourLineInterpolator::SetImageData

(

vtkImageData *

)

[virtual]

Set the height field data. The height field data is a 2D image. The scalars in the image represent the height field. This must be set.

virtual vtkImageData* vtkTerrainContourLineInterpolator::GetImageData

(

)

[virtual]

Set the height field data. The height field data is a 2D image. The scalars in the image represent the height field. This must be set.

virtual vtkProjectedTerrainPath* vtkTerrainContourLineInterpolator::GetProjector

(

)

[virtual]

Get the vtkProjectedTerrainPath operator used to project the terrain onto the data. This operator has several modes, See the documentation of vtkProjectedTerrainPath. The default mode is to hug the terrain data at 0 height offset.

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Member Data Documentation

vtkImageData* vtkTerrainContourLineInterpolator::ImageData [protected]

Definition at line 104 of file vtkTerrainContourLineInterpolator.h.

vtkProjectedTerrainPath* vtkTerrainContourLineInterpolator::Projector [protected]

Definition at line 105 of file vtkTerrainContourLineInterpolator.h.

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

• dox/Widgets/vtkTerrainContourLineInterpolator.h