VTK
9.1.0
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describes linear transformations via a 3x3 matrix More...
#include <vtkTransform2D.h>
Public Types | |
typedef vtkObject | Superclass |
Public Member Functions | |
virtual vtkTypeBool | IsA (const char *type) |
Return 1 if this class is the same type of (or a subclass of) the named class. | |
vtkTransform2D * | NewInstance () const |
void | PrintSelf (ostream &os, vtkIndent indent) override |
Methods invoked by print to print information about the object including superclasses. | |
void | Identity () |
Set the transformation to the identity transformation. | |
void | Inverse () |
Invert the transformation. | |
void | Translate (double x, double y) |
Create a translation matrix and concatenate it with the current transformation. | |
void | Translate (const double x[2]) |
void | Translate (const float x[2]) |
void | Rotate (double angle) |
Create a rotation matrix and concatenate it with the current transformation. | |
void | Scale (double x, double y) |
Create a scale matrix (i.e. | |
void | Scale (const double s[2]) |
void | Scale (const float s[2]) |
void | SetMatrix (vtkMatrix3x3 *matrix) |
Set the current matrix directly. | |
void | SetMatrix (const double elements[9]) |
void | GetInverse (vtkMatrix3x3 *inverse) |
Return a matrix which is the inverse of the current transformation matrix. | |
void | GetTranspose (vtkMatrix3x3 *transpose) |
Return a matrix which is the transpose of the current transformation matrix. | |
vtkMTimeType | GetMTime () override |
Override GetMTime to account for input and concatenation. | |
void | TransformPoints (const float *inPts, float *outPts, int n) |
Apply the transformation to a series of points, and append the results to outPts. | |
void | TransformPoints (const double *inPts, double *outPts, int n) |
Apply the transformation to a series of points, and append the results to outPts. | |
void | TransformPoints (vtkPoints2D *inPts, vtkPoints2D *outPts) |
Apply the transformation to a series of points, and append the results to outPts. | |
void | InverseTransformPoints (const float *inPts, float *outPts, int n) |
Apply the transformation to a series of points, and append the results to outPts. | |
void | InverseTransformPoints (const double *inPts, double *outPts, int n) |
Apply the transformation to a series of points, and append the results to outPts. | |
void | InverseTransformPoints (vtkPoints2D *inPts, vtkPoints2D *outPts) |
Apply the transformation to a series of points, and append the results to outPts. | |
virtual vtkMatrix3x3 * | GetMatrix () |
Get the underlying 3x3 matrix. | |
void | GetMatrix (vtkMatrix3x3 *matrix) |
Get the underlying 3x3 matrix. | |
void | GetPosition (double pos[2]) |
Return the position from the current transformation matrix as an array of two floating point numbers. | |
void | GetPosition (float pos[2]) |
Return the position from the current transformation matrix as an array of two floating point numbers. | |
void | GetScale (double scale[2]) |
Return the x and y scale from the current transformation matrix as an array of two floating point numbers. | |
void | GetScale (float pos[2]) |
Return the x and y scale from the current transformation matrix as an array of two floating point numbers. | |
void | MultiplyPoint (const float in[3], float out[3]) |
Use this method only if you wish to compute the transformation in homogeneous (x,y,w) coordinates, otherwise use TransformPoint(). | |
void | MultiplyPoint (const double in[3], double out[3]) |
Use this method only if you wish to compute the transformation in homogeneous (x,y,w) coordinates, otherwise use TransformPoint(). | |
Public Member Functions inherited from vtkObject | |
vtkBaseTypeMacro (vtkObject, vtkObjectBase) | |
virtual void | DebugOn () |
Turn debugging output on. | |
virtual void | DebugOff () |
Turn debugging output off. | |
bool | GetDebug () |
Get the value of the debug flag. | |
void | SetDebug (bool debugFlag) |
Set the value of the debug flag. | |
virtual void | Modified () |
Update the modification time for this object. | |
virtual vtkMTimeType | GetMTime () |
Return this object's modified time. | |
void | PrintSelf (ostream &os, vtkIndent indent) override |
Methods invoked by print to print information about the object including superclasses. | |
void | RemoveObserver (unsigned long tag) |
void | RemoveObservers (unsigned long event) |
void | RemoveObservers (const char *event) |
void | RemoveAllObservers () |
vtkTypeBool | HasObserver (unsigned long event) |
vtkTypeBool | HasObserver (const char *event) |
int | InvokeEvent (unsigned long event) |
int | InvokeEvent (const char *event) |
unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkCommand * | GetCommand (unsigned long tag) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObserver (vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObservers (unsigned long event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
void | RemoveObservers (const char *event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
Allow people to add/remove/invoke observers (callbacks) to any VTK object. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
Overloads to AddObserver that allow developers to add class member functions as callbacks for events. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
Overloads to AddObserver that allow developers to add class member functions as callbacks for events. | |
template<class U , class T > | |
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
Allow user to set the AbortFlagOn() with the return value of the callback method. | |
int | InvokeEvent (unsigned long event, void *callData) |
This method invokes an event and return whether the event was aborted or not. | |
int | InvokeEvent (const char *event, void *callData) |
This method invokes an event and return whether the event was aborted or not. | |
Public Member Functions inherited from vtkObjectBase | |
const char * | GetClassName () const |
Return the class name as a string. | |
virtual vtkTypeBool | IsA (const char *name) |
Return 1 if this class is the same type of (or a subclass of) the named class. | |
virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name) |
Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). | |
virtual void | Delete () |
Delete a VTK object. | |
virtual void | FastDelete () |
Delete a reference to this object. | |
void | InitializeObjectBase () |
void | Print (ostream &os) |
Print an object to an ostream. | |
virtual void | Register (vtkObjectBase *o) |
Increase the reference count (mark as used by another object). | |
virtual void | UnRegister (vtkObjectBase *o) |
Decrease the reference count (release by another object). | |
int | GetReferenceCount () |
Return the current reference count of this object. | |
void | SetReferenceCount (int) |
Sets the reference count. | |
bool | GetIsInMemkind () const |
A local state flag that remembers whether this object lives in the normal or extended memory space. | |
virtual void | PrintHeader (ostream &os, vtkIndent indent) |
Methods invoked by print to print information about the object including superclasses. | |
virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
Methods invoked by print to print information about the object including superclasses. | |
Static Public Member Functions | |
static vtkTransform2D * | New () |
static vtkTypeBool | IsTypeOf (const char *type) |
static vtkTransform2D * | SafeDownCast (vtkObjectBase *o) |
Static Public Member Functions inherited from vtkObject | |
static vtkObject * | New () |
Create an object with Debug turned off, modified time initialized to zero, and reference counting on. | |
static void | BreakOnError () |
This method is called when vtkErrorMacro executes. | |
static void | SetGlobalWarningDisplay (int val) |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static void | GlobalWarningDisplayOn () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static void | GlobalWarningDisplayOff () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
static int | GetGlobalWarningDisplay () |
This is a global flag that controls whether any debug, warning or error messages are displayed. | |
Static Public Member Functions inherited from vtkObjectBase | |
static vtkTypeBool | IsTypeOf (const char *name) |
Return 1 if this class type is the same type of (or a subclass of) the named class. | |
static vtkIdType | GetNumberOfGenerationsFromBaseType (const char *name) |
Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class). | |
static vtkObjectBase * | New () |
Create an object with Debug turned off, modified time initialized to zero, and reference counting on. | |
static void | SetMemkindDirectory (const char *directoryname) |
The name of a directory, ideally mounted -o dax, to memory map an extended memory space within. | |
static bool | GetUsingMemkind () |
A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space. | |
Protected Member Functions | |
virtual vtkObjectBase * | NewInstanceInternal () const |
vtkTransform2D () | |
~vtkTransform2D () override | |
void | InternalDeepCopy (vtkTransform2D *t) |
Protected Member Functions inherited from vtkObject | |
vtkObject () | |
~vtkObject () override | |
void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr) |
These methods allow a command to exclusively grab all events. | |
void | InternalReleaseFocus () |
These methods allow a command to exclusively grab all events. | |
Protected Member Functions inherited from vtkObjectBase | |
vtkObjectBase () | |
virtual | ~vtkObjectBase () |
virtual void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) |
virtual void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) |
virtual void | ReportReferences (vtkGarbageCollector *) |
vtkObjectBase (const vtkObjectBase &) | |
void | operator= (const vtkObjectBase &) |
Protected Attributes | |
vtkMatrix3x3 * | Matrix |
vtkMatrix3x3 * | InverseMatrix |
Protected Attributes inherited from vtkObject | |
bool | Debug |
vtkTimeStamp | MTime |
vtkSubjectHelper * | SubjectHelper |
Protected Attributes inherited from vtkObjectBase | |
std::atomic< int32_t > | ReferenceCount |
vtkWeakPointerBase ** | WeakPointers |
Additional Inherited Members | |
Static Protected Member Functions inherited from vtkObjectBase | |
static vtkMallocingFunction | GetCurrentMallocFunction () |
static vtkReallocingFunction | GetCurrentReallocFunction () |
static vtkFreeingFunction | GetCurrentFreeFunction () |
static vtkFreeingFunction | GetAlternateFreeFunction () |
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.
All multiplicitive operations (Translate, Rotate, Scale, etc) are post-multiplied in this class (i.e. add them in the reverse of the order that they should be applied).
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.
Definition at line 45 of file vtkTransform2D.h.
typedef vtkObject vtkTransform2D::Superclass |
Definition at line 49 of file vtkTransform2D.h.
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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 vtkObjectBase.
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vtkTransform2D * vtkTransform2D::NewInstance | ( | ) | const |
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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.
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Definition at line 67 of file vtkTransform2D.h.
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Definition at line 68 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.
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Definition at line 81 of file vtkTransform2D.h.
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Definition at line 82 of file vtkTransform2D.h.
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Set the current matrix directly.
Definition at line 87 of file vtkTransform2D.h.
void vtkTransform2D::SetMatrix | ( | const double | elements[9] | ) |
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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.
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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 105 of file vtkTransform2D.h.
void vtkTransform2D::GetScale | ( | double | scale[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.
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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 121 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.
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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.
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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 194 of file vtkTransform2D.h.
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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 195 of file vtkTransform2D.h.
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Definition at line 207 of file vtkTransform2D.h.
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Definition at line 208 of file vtkTransform2D.h.