vtk-m/vtkm/rendering/Canvas.cxx
Kenneth Moreland 22c6741152 Add View to rendering library
To get rid of some templates, I added the ability to create new
instances of mappers and canvases without knowing their type.
2016-09-07 16:48:04 -06:00

67 lines
1.9 KiB
C++

//============================================================================
// Copyright (c) Kitware, Inc.
// All rights reserved.
// See LICENSE.txt 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.
//
// Copyright 2016 Sandia Corporation.
// Copyright 2016 UT-Battelle, LLC.
// Copyright 2016 Los Alamos National Security.
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Under the terms of Contract DE-AC52-06NA25396 with Los Alamos National
// Laboratory (LANL), the U.S. Government retains certain rights in
// this software.
//============================================================================
#include <vtkm/rendering/Canvas.h>
#include <iostream>
#include <fstream>
namespace vtkm {
namespace rendering {
Canvas::Canvas(vtkm::Id width, vtkm::Id height)
: Width(0), Height(0)
{
this->ResizeBuffers(width, height);
}
Canvas::~Canvas()
{ }
void Canvas::SaveAs(const std::string &fileName) const
{
this->RefreshColorBuffer();
std::ofstream of(fileName.c_str());
of<<"P6"<<std::endl<<this->Width<<" "<<this->Height<<std::endl<<255<<std::endl;
ColorBufferType::PortalConstControl colorPortal =
this->ColorBuffer.GetPortalConstControl();
for (vtkm::Id yIndex=this->Height-1; yIndex>=0; yIndex--)
{
for (vtkm::Id xIndex=0; xIndex < this->Width; xIndex++)
{
vtkm::Vec<vtkm::Float32,4> tuple =
colorPortal.Get(yIndex*this->Width + xIndex);
of<<(unsigned char)(tuple[0]*255);
of<<(unsigned char)(tuple[1]*255);
of<<(unsigned char)(tuple[2]*255);
}
}
of.close();
}
vtkm::rendering::WorldAnnotator *
Canvas::CreateWorldAnnotator() const
{
return new vtkm::rendering::WorldAnnotator;
}
}
} // vtkm::rendering