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95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkPlotGrid.cxx
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkPlotGrid.h"
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#include "vtkContext2D.h"
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#include "vtkPoints2D.h"
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#include "vtkPen.h"
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#include "vtkAxis.h"
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#include "vtkFloatArray.h"
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#include "vtkVector.h"
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#include "vtkObjectFactory.h"
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//-----------------------------------------------------------------------------
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vtkCxxSetObjectMacro(vtkPlotGrid, XAxis, vtkAxis);
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vtkCxxSetObjectMacro(vtkPlotGrid, YAxis, vtkAxis);
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//-----------------------------------------------------------------------------
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vtkStandardNewMacro(vtkPlotGrid);
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//-----------------------------------------------------------------------------
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vtkPlotGrid::vtkPlotGrid()
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{
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this->XAxis = NULL;
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this->YAxis = NULL;
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}
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//-----------------------------------------------------------------------------
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vtkPlotGrid::~vtkPlotGrid()
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{
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this->SetXAxis(NULL);
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this->SetYAxis(NULL);
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}
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//-----------------------------------------------------------------------------
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bool vtkPlotGrid::Paint(vtkContext2D *painter)
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{
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if (!this->XAxis || !this->YAxis)
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{
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// Need axes to define where our grid lines should be drawn
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vtkDebugMacro(<<"No axes set and so grid lines cannot be drawn.");
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return false;
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}
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vtkVector2f x1, x2, y1, y2;
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this->XAxis->GetPoint1(x1.GetData());
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this->XAxis->GetPoint2(x2.GetData());
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this->YAxis->GetPoint1(y1.GetData());
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this->YAxis->GetPoint2(y2.GetData());
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// in x
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if (this->XAxis->GetVisible() && this->XAxis->GetGridVisible())
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{
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vtkFloatArray *xLines = this->XAxis->GetTickScenePositions();
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painter->ApplyPen(this->XAxis->GetGridPen());
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float *xPositions = xLines->GetPointer(0);
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for (int i = 0; i < xLines->GetNumberOfTuples(); ++i)
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{
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painter->DrawLine(xPositions[i], y1.GetY(), xPositions[i], y2.GetY());
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}
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}
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// in y
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if (this->YAxis->GetVisible() && this->YAxis->GetGridVisible())
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{
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vtkFloatArray *yLines = this->YAxis->GetTickScenePositions();
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painter->ApplyPen(this->YAxis->GetGridPen());
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float *yPositions = yLines->GetPointer(0);
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for (int i = 0; i < yLines->GetNumberOfTuples(); ++i)
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{
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painter->DrawLine(x1.GetX(), yPositions[i], x2.GetX(), yPositions[i]);
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}
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}
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return true;
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}
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//-----------------------------------------------------------------------------
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void vtkPlotGrid::PrintSelf(ostream &os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os, indent);
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}
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