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/******************************************************************************
* Project: PROJ
* Purpose: Functionality related to triangulation transformation
* Author: Even Rouault, <even.rouault at spatialys.com>
*
******************************************************************************
* Copyright (c) 2020, Even Rouault, <even.rouault at spatialys.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
#define PJ_LIB__
#define PROJ_COMPILATION
#include "tinshift.hpp"
#include "filemanager.hpp"
#include "proj_internal.h"
PROJ_HEAD(tinshift, "Triangulation based transformation");
using namespace TINSHIFT_NAMESPACE;
namespace {
struct tinshiftData {
std::unique_ptr<Evaluator> evaluator{};
tinshiftData() = default;
tinshiftData(const tinshiftData &) = delete;
tinshiftData &operator=(const tinshiftData &) = delete;
};
} // namespace
static PJ *destructor(PJ *P, int errlev) {
if (nullptr == P)
return nullptr;
auto Q = static_cast<struct tinshiftData *>(P->opaque);
delete Q;
P->opaque = nullptr;
return pj_default_destructor(P, errlev);
}
static PJ_COORD tinshift_forward_4d(PJ_COORD in, PJ *P) {
auto *Q = (struct tinshiftData *)P->opaque;
PJ_COORD out = in;
if (!Q->evaluator->forward(in.xyz.x, in.xyz.y, in.xyz.z, out.xyz.x,
out.xyz.y, out.xyz.z)) {
return proj_coord_error();
}
return out;
}
static PJ_COORD tinshift_reverse_4d(PJ_COORD in, PJ *P) {
auto *Q = (struct tinshiftData *)P->opaque;
PJ_COORD out = in;
if (!Q->evaluator->inverse(in.xyz.x, in.xyz.y, in.xyz.z, out.xyz.x,
out.xyz.y, out.xyz.z)) {
return proj_coord_error();
}
return out;
}
PJ *TRANSFORMATION(tinshift, 1) {
const char *filename = pj_param(P->ctx, P->params, "sfile").s;
if (!filename) {
proj_log_error(P, "tinshift: +file= should be specified.");
return destructor(P, PJD_ERR_NO_ARGS);
}
auto file = NS_PROJ::FileManager::open_resource_file(P->ctx, filename);
if (nullptr == file) {
proj_log_error(P, "tinshift: Cannot open %s", filename);
return destructor(P, PJD_ERR_INVALID_ARG);
}
file->seek(0, SEEK_END);
unsigned long long size = file->tell();
// Arbitrary threshold to avoid ingesting an arbitrarily large JSON file,
// that could be a denial of service risk. 10 MB should be sufficiently
// large for any valid use !
if (size > 10 * 1024 * 1024) {
proj_log_error(P, "tinshift: File %s too large", filename);
return destructor(P, PJD_ERR_INVALID_ARG);
}
file->seek(0);
std::string jsonStr;
jsonStr.resize(static_cast<size_t>(size));
if (file->read(&jsonStr[0], jsonStr.size()) != jsonStr.size()) {
proj_log_error(P, "tinshift: Cannot read %s", filename);
return destructor(P, PJD_ERR_INVALID_ARG);
}
auto Q = new tinshiftData();
P->opaque = (void *)Q;
P->destructor = destructor;
try {
Q->evaluator.reset(new Evaluator(TINShiftFile::parse(jsonStr)));
} catch (const std::exception &e) {
proj_log_error(P, "tinshift: invalid model: %s", e.what());
return destructor(P, PJD_ERR_INVALID_ARG);
}
P->destructor = destructor;
P->fwd4d = tinshift_forward_4d;
P->inv4d = tinshift_reverse_4d;
P->left = PJ_IO_UNITS_WHATEVER;
P->right = PJ_IO_UNITS_WHATEVER;
return P;
}
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