pxmlw6n2f/Gazebo_Distributed_TCP/gazebo/common/HeightmapData.cc

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2019-03-28 10:57:49 +08:00
/*
* Copyright (C) 2016 Open Source Robotics Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <gazebo/gazebo_config.h>
#ifdef HAVE_GDAL
# pragma GCC diagnostic push
# pragma GCC diagnostic ignored "-Wfloat-equal"
# include <gdalwarper.h>
# include <gdal_priv.h>
# pragma GCC diagnostic pop
#endif
#include "gazebo/common/Console.hh"
#include "gazebo/common/ImageHeightmap.hh"
#include "gazebo/common/HeightmapData.hh"
#include "gazebo/common/Dem.hh"
using namespace gazebo;
using namespace common;
//////////////////////////////////////////////////
HeightmapData *HeightmapDataLoader::LoadImageAsTerrain(
const std::string &_filename)
{
ImageHeightmap *img = new ImageHeightmap();
if (img->Load(_filename) != 0)
{
gzerr << "Unable to load an image as a terrain [" << _filename << "]\n";
return nullptr;
}
return static_cast<HeightmapData *>(img);
}
#ifdef HAVE_GDAL
//////////////////////////////////////////////////
HeightmapData *HeightmapDataLoader::LoadDEMAsTerrain(
const std::string &_filename)
{
Dem *dem = new Dem();
if (dem->Load(_filename) != 0)
{
gzerr << "Unable to load a DEM file as a terrain [" << _filename << "]\n";
return nullptr;
}
return static_cast<HeightmapData *>(dem);
}
//////////////////////////////////////////////////
HeightmapData *HeightmapDataLoader::LoadTerrainFile(
const std::string &_filename)
{
// Register the GDAL drivers
GDALAllRegister();
GDALDataset *poDataset = reinterpret_cast<GDALDataset *>
(GDALOpen(_filename.c_str(), GA_ReadOnly));
if (!poDataset)
{
gzerr << "Unrecognized terrain format in file [" << _filename << "]\n";
return nullptr;
}
std::string fileFormat = poDataset->GetDriver()->GetDescription();
GDALClose(reinterpret_cast<GDALDataset *>(poDataset));
// Check if the heightmap file is an image
if (fileFormat == "JPEG" || fileFormat == "PNG")
{
// Load the terrain file as an image
return LoadImageAsTerrain(_filename);
}
else
{
// Load the terrain file as a DEM
return LoadDEMAsTerrain(_filename);
}
}
#else
HeightmapData *HeightmapDataLoader::LoadTerrainFile(
const std::string &_filename)
{
// Load the terrain file as an image
return LoadImageAsTerrain(_filename);
}
#endif