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/*=========================================================================
Program: Visualization Toolkit
Module: vtkContextDevice2D.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 "vtkContextDevice2D.h"
#include "vtkAbstractMapper.h" // for VTK_SCALAR_MODE defines
#include "vtkBrush.h"
#include "vtkCellIterator.h"
#include "vtkMathTextUtilities.h"
#include "vtkPen.h"
#include "vtkPolyData.h"
#include "vtkRect.h"
#include "vtkTextProperty.h"
#include "vtkUnsignedCharArray.h"
#include "vtkObjectFactory.h"
#include <cassert>
#include <vector>
VTK_ABI_NAMESPACE_BEGIN
vtkAbstractObjectFactoryNewMacro(vtkContextDevice2D);
vtkContextDevice2D::vtkContextDevice2D()
{
this->Geometry[0] = 0;
this->Geometry[1] = 0;
this->BufferId = nullptr;
this->Pen = vtkPen::New();
this->Brush = vtkBrush::New();
this->TextProp = vtkTextProperty::New();
}
//------------------------------------------------------------------------------
vtkContextDevice2D::~vtkContextDevice2D()
{
this->Pen->Delete();
this->Brush->Delete();
this->TextProp->Delete();
}
//------------------------------------------------------------------------------
bool vtkContextDevice2D::MathTextIsSupported()
{
return vtkMathTextUtilities::GetInstance() != nullptr;
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::DrawPolyData(
float p[2], float scale, vtkPolyData* polyData, vtkUnsignedCharArray* colors, int scalarMode)
{
std::vector<float> verts;
std::vector<unsigned char> vertColors;
vtkCellIterator* cell = polyData->NewCellIterator();
cell->InitTraversal();
for (; !cell->IsDoneWithTraversal(); cell->GoToNextCell())
{
// To match the original implementation on the OpenGL2 backend, we only
// handle polygons and lines:
int cellType = cell->GetCellType();
switch (cellType)
{
case VTK_LINE:
case VTK_POLY_LINE:
case VTK_TRIANGLE:
case VTK_QUAD:
case VTK_POLYGON:
break;
default:
continue;
}
// Allocate temporary arrays:
vtkIdType numPoints = cell->GetNumberOfPoints();
if (numPoints == 0)
{
continue;
}
verts.resize(static_cast<size_t>(numPoints) * 2);
vertColors.resize(static_cast<size_t>(numPoints) * 4);
vtkIdType cellId = cell->GetCellId();
vtkIdList* pointIds = cell->GetPointIds();
vtkPoints* points = cell->GetPoints();
for (vtkIdType i = 0; i < numPoints; ++i)
{
const size_t vertsIdx = 2 * static_cast<size_t>(i);
const size_t colorIdx = 4 * static_cast<size_t>(i);
const double* point = points->GetPoint(i);
verts[vertsIdx] = (static_cast<float>(point[0]) + p[0]) * scale;
verts[vertsIdx + 1] = (static_cast<float>(point[1]) + p[1]) * scale;
if (scalarMode == VTK_SCALAR_MODE_USE_POINT_DATA)
{
colors->GetTypedTuple(pointIds->GetId(i), vertColors.data() + colorIdx);
}
else
{
colors->GetTypedTuple(cellId, vertColors.data() + colorIdx);
}
}
if (cellType == VTK_LINE || cellType == VTK_POLY_LINE)
{
this->DrawPoly(verts.data(), numPoints, vertColors.data(), 4);
}
else
{
this->DrawColoredPolygon(verts.data(), numPoints, vertColors.data(), 4);
}
}
cell->Delete();
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::ApplyPen(vtkPen* pen)
{
this->Pen->DeepCopy(pen);
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::ApplyBrush(vtkBrush* brush)
{
this->Brush->DeepCopy(brush);
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::ApplyTextProp(vtkTextProperty* prop)
{
// This is a deep copy, but is called shallow for some reason...
this->TextProp->ShallowCopy(prop);
}
//------------------------------------------------------------------------------
bool vtkContextDevice2D::GetBufferIdMode() const
{
return this->BufferId != nullptr;
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::BufferIdModeBegin(vtkAbstractContextBufferId* bufferId)
{
assert("pre: not_yet" && !this->GetBufferIdMode());
assert("pre: bufferId_exists" && bufferId != nullptr);
this->BufferId = bufferId;
assert("post: started" && this->GetBufferIdMode());
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::BufferIdModeEnd()
{
assert("pre: started" && this->GetBufferIdMode());
this->BufferId = nullptr;
assert("post: done" && !this->GetBufferIdMode());
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "Pen: ";
this->Pen->PrintSelf(os, indent.GetNextIndent());
os << indent << "Brush: ";
this->Brush->PrintSelf(os, indent.GetNextIndent());
os << indent << "Text Property: ";
this->TextProp->PrintSelf(os, indent.GetNextIndent());
}
//------------------------------------------------------------------------------
void vtkContextDevice2D::DrawMarkers(int, bool, float*, int, unsigned char*, int) {}
//------------------------------------------------------------------------------
void vtkContextDevice2D::DrawColoredPolygon(float*, int, unsigned char*, int)
{
vtkErrorMacro("DrawColoredPolygon not implemented on this device.");
}
VTK_ABI_NAMESPACE_END
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