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/*=========================================================================
Program: Visualization Toolkit
Module: vtkDistanceRepresentation.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkDistanceRepresentation.h"
#include "vtkHandleRepresentation.h"
#include "vtkCoordinate.h"
#include "vtkRenderer.h"
#include "vtkObjectFactory.h"
#include "vtkBox.h"
#include "vtkInteractorObserver.h"
#include "vtkMath.h"
#include "vtkWindow.h"
vtkCxxSetObjectMacro(vtkDistanceRepresentation,HandleRepresentation,vtkHandleRepresentation);
//----------------------------------------------------------------------
vtkDistanceRepresentation::vtkDistanceRepresentation()
{
this->HandleRepresentation = NULL;
this->Point1Representation = NULL;
this->Point2Representation = NULL;
this->Tolerance = 5;
this->Placed = 0;
this->LabelFormat = new char[8];
sprintf(this->LabelFormat,"%s","%-#6.3g");
}
//----------------------------------------------------------------------
vtkDistanceRepresentation::~vtkDistanceRepresentation()
{
if ( this->HandleRepresentation )
{
this->HandleRepresentation->Delete();
}
if ( this->Point1Representation )
{
this->Point1Representation->Delete();
}
if ( this->Point2Representation )
{
this->Point2Representation->Delete();
}
if (this->LabelFormat)
{
delete [] this->LabelFormat;
this->LabelFormat = NULL;
}
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::InstantiateHandleRepresentation()
{
if ( ! this->Point1Representation )
{
this->Point1Representation = this->HandleRepresentation->NewInstance();
this->Point1Representation->ShallowCopy(this->HandleRepresentation);
}
if ( ! this->Point2Representation )
{
this->Point2Representation = this->HandleRepresentation->NewInstance();
this->Point2Representation->ShallowCopy(this->HandleRepresentation);
}
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::GetPoint1WorldPosition(double pos[3])
{
this->Point1Representation->GetWorldPosition(pos);
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::GetPoint2WorldPosition(double pos[3])
{
this->Point2Representation->GetWorldPosition(pos);
}
//----------------------------------------------------------------------
int vtkDistanceRepresentation::ComputeInteractionState(int X, int Y, int vtkNotUsed(modify))
{
// See if we are near one of the end points or outside
double pos1[3], pos2[3];
this->GetPoint1DisplayPosition(pos1);
this->GetPoint2DisplayPosition(pos2);
double p1[3], p2[3], xyz[3];
xyz[0] = static_cast<double>(X);
xyz[1] = static_cast<double>(Y);
p1[0] = static_cast<double>(pos1[0]);
p1[1] = static_cast<double>(pos1[1]);
p2[0] = static_cast<double>(pos2[0]);
p2[1] = static_cast<double>(pos2[1]);
xyz[2] = p1[2] = p2[2] = 0.0;
double tol2 = this->Tolerance*this->Tolerance;
if ( vtkMath::Distance2BetweenPoints(xyz,p1) <= tol2 )
{
this->InteractionState = vtkDistanceRepresentation::NearP1;
}
else if ( vtkMath::Distance2BetweenPoints(xyz,p2) <= tol2 )
{
this->InteractionState = vtkDistanceRepresentation::NearP2;
}
else
{
this->InteractionState = vtkDistanceRepresentation::Outside;
}
return this->InteractionState;
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::StartWidgetInteraction(double e[2])
{
double pos[3];
pos[0] = e[0];
pos[1] = e[1];
pos[2] = 0.0;
this->SetPoint1DisplayPosition(pos);
this->SetPoint2DisplayPosition(pos);
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::WidgetInteraction(double e[2])
{
double pos[3];
pos[0] = e[0];
pos[1] = e[1];
pos[2] = 0.0;
this->SetPoint2DisplayPosition(pos);
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::BuildRepresentation()
{
// We don't worry about mtime 'cause the subclass deals with that
// Make sure the handles are up to date
this->Point1Representation->BuildRepresentation();
this->Point2Representation->BuildRepresentation();
}
//----------------------------------------------------------------------
void vtkDistanceRepresentation::PrintSelf(ostream& os, vtkIndent indent)
{
//Superclass typedef defined in vtkTypeMacro() found in vtkSetGet.h
this->Superclass::PrintSelf(os,indent);
os << indent << "Distance: " << this->GetDistance() <<"\n";
os << indent << "Tolerance: " << this->Tolerance <<"\n";
os << indent << "Handle Representation: " << this->HandleRepresentation << "\n";
os << indent << "Label Format: ";
if ( this->LabelFormat )
{
os << this->LabelFormat << "\n";
}
else
{
os << "(none)\n";
}
os << indent << "Point1 Representation: ";
if ( this->Point1Representation )
{
this->Point1Representation->PrintSelf(os,indent.GetNextIndent());
}
else
{
os << "(none)\n";
}
os << indent << "Point2 Representation: ";
if ( this->Point2Representation )
{
this->Point2Representation->PrintSelf(os,indent.GetNextIndent());
}
else
{
os << "(none)\n";
}
}