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109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
#include <cstdlib>
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#include <netcdfcpp.h>
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#include <CosmoTool/fortran.hpp>
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#include "particleInfo.hpp"
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using namespace std;
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using namespace CosmoTool;
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template<bool failure>
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double retrieve_attr_safe_double(NcFile& f, const char *name, double defval)
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{
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NcAtt *a = f.get_att(name);
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if (a == 0)
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{
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if (failure)
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abort();
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return defval;
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}
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return a->as_double(0);
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}
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template<bool failure>
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int retrieve_attr_safe_int(NcFile& f, const char *name, int defval)
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{
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NcAtt *a = f.get_att(name);
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if (a == 0)
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{
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if (failure)
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abort();
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return defval;
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}
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return a->as_int(0);
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}
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bool loadParticleInfo(ParticleInfo& info,
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const std::string& particles,
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const std::string& extra_info)
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{
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int numpart;
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int isObservation;
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NcFile f_info(extra_info.c_str());
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NcError nerr(NcError::verbose_nonfatal);
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if (!f_info.is_valid())
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return false;
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info.ranges[0][0] = retrieve_attr_safe_double<true>(f_info, "range_x_min", 0);
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info.ranges[0][1] = retrieve_attr_safe_double<true>(f_info, "range_x_max", 0);
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info.ranges[1][0] = retrieve_attr_safe_double<true>(f_info, "range_y_min", 0);
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info.ranges[1][1] = retrieve_attr_safe_double<true>(f_info, "range_y_max", 0);
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info.ranges[2][0] = retrieve_attr_safe_double<true>(f_info, "range_z_min", 0);
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info.ranges[2][1] = retrieve_attr_safe_double<true>(f_info, "range_z_max", 0);
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info.mask_index = retrieve_attr_safe_int<true>(f_info, "mask_index", 0);
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isObservation = retrieve_attr_safe_int<false>(f_info, "is_observation", 0);
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for (int i = 0; i < 3; i++)
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info.length[i] = info.ranges[i][1] - info.ranges[i][0];
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try
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{
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UnformattedRead f(particles);
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float mul, offset;
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f.beginCheckpoint();
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numpart = f.readInt32();
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f.endCheckpoint();
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info.particles.resize(numpart);
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offset = info.ranges[0][0];
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mul = info.ranges[0][1] - info.ranges[0][0];
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f.beginCheckpoint();
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for (int i = 0; i < numpart; i++)
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info.particles[i].x = mul*f.readReal32();
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f.endCheckpoint();
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offset = info.ranges[1][0];
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mul = info.ranges[1][1] - info.ranges[1][0];
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f.beginCheckpoint();
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for (int i = 0; i < numpart; i++)
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info.particles[i].y = mul*f.readReal32();
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f.endCheckpoint();
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offset = info.ranges[2][0];
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mul = info.ranges[2][1] - info.ranges[2][0];
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f.beginCheckpoint();
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for (int i = 0; i < numpart; i++)
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info.particles[i].z = mul*f.readReal32();
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f.endCheckpoint();
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if (!isObservation) {
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for (int i = 0; i < numpart; i++) {
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info.particles[i].x += info.ranges[0][0];
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info.particles[i].y += info.ranges[1][0];
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info.particles[i].z += info.ranges[2][0];
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}
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}
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}
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catch (const NoSuchFileException& e)
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{
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return false;
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}
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return true;
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}
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