vtkTransform2D Class Reference

#include <vtkTransform2D.h>

Inheritance diagram for vtkTransform2D:

Inheritance graph
[legend]
Collaboration diagram for vtkTransform2D:

Collaboration graph
[legend]

List of all members.


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 45 of file vtkTransform2D.h.


Public Types

typedef vtkObject Superclass

Public Member Functions

virtual const char * GetClassName ()
virtual int IsA (const char *type)
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 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 (vtkObject *o)

Protected Member Functions

 vtkTransform2D ()
 ~vtkTransform2D ()
void InternalDeepCopy (vtkTransform2D *t)

Protected Attributes

vtkMatrix3x3Matrix
vtkMatrix3x3InverseMatrix

Member Typedef Documentation

Reimplemented from vtkObject.

Definition at line 49 of file vtkTransform2D.h.


Constructor & Destructor Documentation

vtkTransform2D::vtkTransform2D (  )  [protected]

vtkTransform2D::~vtkTransform2D (  )  [protected]


Member Function Documentation

static vtkTransform2D* vtkTransform2D::New (  )  [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

virtual const char* vtkTransform2D::GetClassName (  )  [virtual]

Reimplemented from vtkObject.

static int vtkTransform2D::IsTypeOf ( const char *  name  )  [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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

virtual int vtkTransform2D::IsA ( const char *  name  )  [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 vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkObject.

static vtkTransform2D* vtkTransform2D::SafeDownCast ( vtkObject o  )  [static]

Reimplemented from vtkObject.

void vtkTransform2D::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.

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 62 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 63 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 74 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 75 of file vtkTransform2D.h.

void vtkTransform2D::SetMatrix ( vtkMatrix3x3 matrix  )  [inline]

Set the current matrix directly.

Definition at line 80 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 96 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 (  )  [virtual]

Override GetMTime to account for input and concatenation.

Reimplemented from vtkObject.

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 147 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 149 of file vtkTransform2D.h.

void vtkTransform2D::InternalDeepCopy ( vtkTransform2D t  )  [protected]


Member Data Documentation

Definition at line 159 of file vtkTransform2D.h.

Definition at line 160 of file vtkTransform2D.h.


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

Generated on Wed Aug 24 12:14:02 2011 for VTK by  doxygen 1.5.6