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vtkTransform2D Class Reference

describes linear transformations via a 3x3 matrix More...

#include <vtkTransform2D.h>

Inherits vtkObject.

Collaboration diagram for vtkTransform2D:
[legend]

Public Types

typedef vtkObject Superclass
 

Public Member Functions

virtual int IsA (const char *type)
 
vtkTransform2DNewInstance () const
 
void PrintSelf (ostream &os, vtkIndent indent)
 
void Identity ()
 
void Inverse ()
 
void Rotate (double angle)
 
void GetInverse (vtkMatrix3x3 *inverse)
 
void GetTranspose (vtkMatrix3x3 *transpose)
 
unsigned long GetMTime ()
 
void TransformPoints (const float *inPts, float *outPts, int n)
 
void TransformPoints (const double *inPts, double *outPts, int n)
 
void TransformPoints (vtkPoints2D *inPts, vtkPoints2D *outPts)
 
void InverseTransformPoints (const float *inPts, float *outPts, int n)
 
void InverseTransformPoints (const double *inPts, double *outPts, int n)
 
void InverseTransformPoints (vtkPoints2D *inPts, vtkPoints2D *outPts)
 
void Translate (double x, double y)
 
void Translate (const double x[2])
 
void Translate (const float x[2])
 
void Scale (double x, double y)
 
void Scale (const double s[2])
 
void Scale (const float s[2])
 
void SetMatrix (vtkMatrix3x3 *matrix)
 
void SetMatrix (const double elements[9])
 
virtual vtkMatrix3x3GetMatrix ()
 
void GetMatrix (vtkMatrix3x3 *matrix)
 
void GetPosition (double pos[2])
 
void GetPosition (float pos[2])
 
void GetScale (double pos[2])
 
void GetScale (float pos[2])
 
void MultiplyPoint (const float in[3], float out[3])
 
void MultiplyPoint (const double in[3], double out[3])
 

Static Public Member Functions

static vtkTransform2DNew ()
 
static int IsTypeOf (const char *type)
 
static vtkTransform2DSafeDownCast (vtkObjectBase *o)
 

Protected Member Functions

virtual vtkObjectBase * NewInstanceInternal () const
 
 vtkTransform2D ()
 
 ~vtkTransform2D ()
 
void InternalDeepCopy (vtkTransform2D *t)
 

Protected Attributes

vtkMatrix3x3Matrix
 
vtkMatrix3x3InverseMatrix
 

Detailed Description

describes linear transformations via a 3x3 matrix

A vtkTransform2D can be used to describe the full range of linear (also known as affine) coordinate transformations in two dimensions, which are internally represented as a 3x3 homogeneous transformation matrix. When you create a new vtkTransform2D, it is always initialized to the identity transformation.

This class performs all of its operations in a right handed coordinate system with right handed rotations. Some other graphics libraries use left handed coordinate systems and rotations.

Examples:
vtkTransform2D (Examples)
Tests:
vtkTransform2D (Tests)

Definition at line 46 of file vtkTransform2D.h.

Member Typedef Documentation

typedef vtkObject vtkTransform2D::Superclass

Definition at line 50 of file vtkTransform2D.h.

Constructor & Destructor Documentation

vtkTransform2D::vtkTransform2D ( )
protected
vtkTransform2D::~vtkTransform2D ( )
protected

Member Function Documentation

static vtkTransform2D* vtkTransform2D::New ( )
static
static int vtkTransform2D::IsTypeOf ( const char *  type)
static
virtual int vtkTransform2D::IsA ( const char *  type)
virtual
static vtkTransform2D* vtkTransform2D::SafeDownCast ( vtkObjectBase *  o)
static
virtual vtkObjectBase* vtkTransform2D::NewInstanceInternal ( ) const
protectedvirtual
vtkTransform2D* vtkTransform2D::NewInstance ( ) const
void vtkTransform2D::PrintSelf ( ostream &  os,
vtkIndent  indent 
)
void vtkTransform2D::Identity ( )

Set the transformation to the identity transformation.

void vtkTransform2D::Inverse ( )

Invert the transformation.

void vtkTransform2D::Translate ( double  x,
double  y 
)

Create a translation matrix and concatenate it with the current transformation.

void vtkTransform2D::Translate ( const double  x[2])
inline

Create a translation matrix and concatenate it with the current transformation.

Definition at line 63 of file vtkTransform2D.h.

void vtkTransform2D::Translate ( const float  x[2])
inline

Create a translation matrix and concatenate it with the current transformation.

Definition at line 64 of file vtkTransform2D.h.

void vtkTransform2D::Rotate ( double  angle)

Create a rotation matrix and concatenate it with the current transformation. The angle is in degrees.

void vtkTransform2D::Scale ( double  x,
double  y 
)

Create a scale matrix (i.e. set the diagonal elements to x, y) and concatenate it with the current transformation.

void vtkTransform2D::Scale ( const double  s[2])
inline

Create a scale matrix (i.e. set the diagonal elements to x, y) and concatenate it with the current transformation.

Definition at line 75 of file vtkTransform2D.h.

void vtkTransform2D::Scale ( const float  s[2])
inline

Create a scale matrix (i.e. set the diagonal elements to x, y) and concatenate it with the current transformation.

Definition at line 76 of file vtkTransform2D.h.

void vtkTransform2D::SetMatrix ( vtkMatrix3x3 matrix)
inline

Set the current matrix directly.

Definition at line 81 of file vtkTransform2D.h.

void vtkTransform2D::SetMatrix ( const double  elements[9])

Set the current matrix directly.

virtual vtkMatrix3x3* vtkTransform2D::GetMatrix ( )
virtual

Get the underlying 3x3 matrix.

void vtkTransform2D::GetMatrix ( vtkMatrix3x3 matrix)

Get the underlying 3x3 matrix.

void vtkTransform2D::GetPosition ( double  pos[2])

Return the position from the current transformation matrix as an array of two floating point numbers. This is simply returning the translation component of the 3x3 matrix.

void vtkTransform2D::GetPosition ( float  pos[2])
inline

Return the position from the current transformation matrix as an array of two floating point numbers. This is simply returning the translation component of the 3x3 matrix.

Definition at line 97 of file vtkTransform2D.h.

void vtkTransform2D::GetScale ( double  pos[2])

Return the x and y scale from the current transformation matrix as an array of two floating point numbers. This is simply returning the scale component of the 3x3 matrix.

void vtkTransform2D::GetScale ( float  pos[2])
inline

Return the x and y scale from the current transformation matrix as an array of two floating point numbers. This is simply returning the scale component of the 3x3 matrix.

Definition at line 109 of file vtkTransform2D.h.

void vtkTransform2D::GetInverse ( vtkMatrix3x3 inverse)

Return a matrix which is the inverse of the current transformation matrix.

void vtkTransform2D::GetTranspose ( vtkMatrix3x3 transpose)

Return a matrix which is the transpose of the current transformation matrix. This is equivalent to the inverse if and only if the transformation is a pure rotation with no translation or scale.

unsigned long vtkTransform2D::GetMTime ( )

Override GetMTime to account for input and concatenation.

void vtkTransform2D::TransformPoints ( const float *  inPts,
float *  outPts,
int  n 
)

Apply the transformation to a series of points, and append the results to outPts. Where n is the number of points, and the float pointers are of length 2*n.

void vtkTransform2D::TransformPoints ( const double *  inPts,
double *  outPts,
int  n 
)

Apply the transformation to a series of points, and append the results to outPts. Where n is the number of points, and the float pointers are of length 2*n.

void vtkTransform2D::TransformPoints ( vtkPoints2D *  inPts,
vtkPoints2D *  outPts 
)

Apply the transformation to a series of points, and append the results to outPts.

void vtkTransform2D::InverseTransformPoints ( const float *  inPts,
float *  outPts,
int  n 
)

Apply the transformation to a series of points, and append the results to outPts. Where n is the number of points, and the float pointers are of length 2*n.

void vtkTransform2D::InverseTransformPoints ( const double *  inPts,
double *  outPts,
int  n 
)

Apply the transformation to a series of points, and append the results to outPts. Where n is the number of points, and the float pointers are of length 2*n.

void vtkTransform2D::InverseTransformPoints ( vtkPoints2D *  inPts,
vtkPoints2D *  outPts 
)

Apply the transformation to a series of points, and append the results to outPts.

void vtkTransform2D::MultiplyPoint ( const float  in[3],
float  out[3] 
)
inline

Use this method only if you wish to compute the transformation in homogeneous (x,y,w) coordinates, otherwise use TransformPoint(). This method calls this->GetMatrix()->MultiplyPoint().

Definition at line 160 of file vtkTransform2D.h.

void vtkTransform2D::MultiplyPoint ( const double  in[3],
double  out[3] 
)
inline

Use this method only if you wish to compute the transformation in homogeneous (x,y,w) coordinates, otherwise use TransformPoint(). This method calls this->GetMatrix()->MultiplyPoint().

Definition at line 162 of file vtkTransform2D.h.

void vtkTransform2D::InternalDeepCopy ( vtkTransform2D t)
protected

Member Data Documentation

vtkMatrix3x3* vtkTransform2D::Matrix
protected

Definition at line 172 of file vtkTransform2D.h.

vtkMatrix3x3* vtkTransform2D::InverseMatrix
protected

Definition at line 173 of file vtkTransform2D.h.


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