vtkContextBufferId Class Reference
#include <vtkContextBufferId.h>
Detailed Description
2D array of ids, used for picking.An 2D array where each element is the id of an entity drawn at the given pixel.
Definition at line 31 of file vtkContextBufferId.h.
Public Types | |
| typedef vtkAbstractContextBufferId | Superclass |
Public Member Functions | |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| virtual void | PrintSelf (ostream &os, vtkIndent indent) |
| virtual void | Allocate () |
| virtual bool | IsAllocated () const |
| virtual vtkIdType | GetPickedItem (int x, int y) |
| virtual void | SetValues (int srcXmin, int srcYmin) |
Static Public Member Functions | |
| static int | IsTypeOf (const char *type) |
| static vtkContextBufferId * | SafeDownCast (vtkObject *o) |
| static vtkContextBufferId * | New () |
Protected Member Functions | |
| vtkContextBufferId () | |
| virtual | ~vtkContextBufferId () |
| int | GetValue (vtkIdType i) |
| void | SetValue (vtkIdType i, int value) |
Protected Attributes | |
| vtkIntArray * | IdArray |
Member Typedef Documentation
Constructor & Destructor Documentation
| vtkContextBufferId::vtkContextBufferId | ( | ) | [protected] |
| virtual vtkContextBufferId::~vtkContextBufferId | ( | ) | [protected, virtual] |
Member Function Documentation
| virtual const char* vtkContextBufferId::GetClassName | ( | ) | [virtual] |
Reimplemented from vtkAbstractContextBufferId.
| static int vtkContextBufferId::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 vtkAbstractContextBufferId.
| virtual int vtkContextBufferId::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 vtkAbstractContextBufferId.
| static vtkContextBufferId* vtkContextBufferId::SafeDownCast | ( | vtkObject * | o | ) | [static] |
Reimplemented from vtkAbstractContextBufferId.
| virtual void vtkContextBufferId::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 vtkAbstractContextBufferId.
| static vtkContextBufferId* vtkContextBufferId::New | ( | ) | [static] |
Creates a 2D Painter object.
Reimplemented from vtkObject.
| virtual void vtkContextBufferId::Allocate | ( | ) | [virtual] |
Allocate the memory for at least Width*Height elements.
- Precondition:
- positive_width: GetWidth()>0
positive_height: GetHeight()>0
Implements vtkAbstractContextBufferId.
| virtual bool vtkContextBufferId::IsAllocated | ( | ) | const [virtual] |
Tell if the buffer has been allocated.
Implements vtkAbstractContextBufferId.
| virtual void vtkContextBufferId::SetValues | ( | int | srcXmin, | |
| int | srcYmin | |||
| ) | [virtual] |
Copy the contents of the current read buffer to the internal array starting at lower left corner of the framebuffer (srcXmin,srcYmin).
- Precondition:
- is_allocated: this->IsAllocated()
Implements vtkAbstractContextBufferId.
| virtual vtkIdType vtkContextBufferId::GetPickedItem | ( | int | x, | |
| int | y | |||
| ) | [virtual] |
Return item under abscissa x and ordinate y. Abscissa go from left to right. Ordinate go from bottom to top. The return value is -1 if there is no item.
- Precondition:
- is_allocated: IsAllocated()
- Postcondition:
- valid_result: result>=-1
Implements vtkAbstractContextBufferId.
| void vtkContextBufferId::SetValue | ( | vtkIdType | i, | |
| int | value | |||
| ) | [protected] |
Set the value at index `i'.
- Precondition:
- is_allocated: this->IsAllocated()
valid_i: i>=0 i<this->GetWidth()*this->GetHeight()
- Postcondition:
- is_set: this->GetValue(i)==value
| int vtkContextBufferId::GetValue | ( | vtkIdType | i | ) | [protected] |
Get the value at index `i'.
- Precondition:
- is_allocated: this->IsAllocated()
valid_i: i>=0 i<this->GetWidth()*this->GetHeight()
Member Data Documentation
vtkIntArray* vtkContextBufferId::IdArray [protected] |
Definition at line 77 of file vtkContextBufferId.h.
The documentation for this class was generated from the following file:
- dox/Charts/vtkContextBufferId.h
