gmaterial.cc

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#include "gutilities.h"
//using namespace gutilities;
 
 
// gsystem
#include "gmaterial.h"
#include "gsystemConventions.h"
 
// c++
#include <iostream>
#include <sstream>
 
 
GMaterial::GMaterial(const std::string &s, std::vector<std::string> pars,
                     const std::shared_ptr<GLogger> &logger) : GBase(logger),
                                                               system(s) {
    if (pars.size() != gsystem::GMATERIALNUMBEROFPARS) {
        log->error(gsystem::ERR_GWRONGNUMBEROFPARS,
                   "Incorrect number of material parameters for ", pars[0], ". Expected ",
                   gsystem::GMATERIALNUMBEROFPARS, " but we got ", pars.size());
    } else {
        // The parameter vector is a serialized DB/ASCII row. Parsing is positional.
        size_t i = 0;
 
        name = gutilities::removeAllSpacesFromString(pars[i++]);
        density = stod(gutilities::removeAllSpacesFromString(pars[i++]));
 
        // The "composition" field is tokenized into (component, amount) pairs.
        setComponentsFromString(pars[i++]);
 
        // Human-readable description (kept verbatim).
        description = pars[i++];
 
        // Optical properties: serialized null fields are skipped at this input boundary.
        getMaterialPropertyFromString(pars[i++], "photonEnergy");
        getMaterialPropertyFromString(pars[i++], "indexOfRefraction");
        getMaterialPropertyFromString(pars[i++], "absorptionLength");
        getMaterialPropertyFromString(pars[i++], "reflectivity");
        getMaterialPropertyFromString(pars[i++], "efficiency");
 
        // Scintillation properties (spectra first, then scalars).
        getMaterialPropertyFromString(pars[i++], "fastcomponent");
        getMaterialPropertyFromString(pars[i++], "slowcomponent");
 
        // assign_if_set increment index
        scintillationyieldSet = assign_if_set(pars, i, scintillationyield);
        resolutionscaleSet    = assign_if_set(pars, i, resolutionscale);
        fasttimeconstantSet   = assign_if_set(pars, i, fasttimeconstant);
        slowtimeconstantSet   = assign_if_set(pars, i, slowtimeconstant);
        yieldratioSet         = assign_if_set(pars, i, yieldratio);
        birksConstantSet      = assign_if_set(pars, i, birksConstant);
 
        // Other optical processes: the final vector load triggers cross-vector size validation.
        getMaterialPropertyFromString(pars[i++], "rayleigh");
    }
}
 
 
std::ostream &operator<<(std::ostream &stream, const GMaterial &gMat) {
    stream << std::endl;
    stream << "   - Material: " << gMat.name << "  in system  " << gMat.system << ": " << std::endl;
    stream << "     Density:          " << gMat.density << std::endl;
    if (!gMat.components.empty()) {
        stream << "     Composition:          " << std::endl;
        for (unsigned m = 0; m < gMat.components.size(); m++) {
            std::string quantity = gMat.amounts[m] > 1 ? " atoms " : " fractional mass";
            stream << "       ・ " << gMat.components[m] << quantity << " " << gMat.amounts[m] << std::endl;
        }
    }
    stream << "     Description: " << gMat.description << std::endl;
    stream << std::endl;
 
    return stream;
}
 
 
// sets components and amounts
void GMaterial::setComponentsFromString(const std::string &composition) {
    std::vector<std::string> allComponents = gutilities::getStringVectorFromString(composition);
 
    // Interpret alternating tokens as (component, amount) pairs.
    for (unsigned e = 0; e < allComponents.size() / 2; e++) {
        components.push_back(allComponents[e * 2]);
        amounts.push_back(stod(allComponents[e * 2 + 1]));
    }
}
 
 
// load property from DB entry based on its name
void GMaterial::getMaterialPropertyFromString(const std::string &parameter, const std::string &propertyName) {
    // Nothing to do if the parameter is not assigned.
    if (gutilities::is_unset(gutilities::removeLeadingAndTrailingSpacesFromString(parameter))) {
        return;
    }
 
    // Tokenize the string and parse each component to a numeric value with units.
    std::stringstream parameterComponents(parameter);
 
    while (!parameterComponents.eof()) {
        std::string component;
        parameterComponents >> component;
 
        // Removing whitespaces.
        std::string trimmedComponent = gutilities::removeLeadingAndTrailingSpacesFromString(component);
        // Non set properties
 
        // Vector-valued properties append one value per token.
        if (propertyName == "photonEnergy") {
            photonEnergy.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "indexOfRefraction") {
            indexOfRefraction.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "absorptionLength") {
            absorptionLength.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "reflectivity") {
            reflectivity.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "efficiency") {
            efficiency.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "fastcomponent") {
            fastcomponent.push_back(gutilities::getG4Number(trimmedComponent));
        } else if (propertyName == "slowcomponent") {
            slowcomponent.push_back(gutilities::getG4Number(trimmedComponent));
        }
        // Scalar-valued properties overwrite with the last parsed token.
        else if (propertyName == "scintillationyield") {
            scintillationyield = gutilities::getG4Number(trimmedComponent);
        } else if (propertyName == "resolutionscale") {
            resolutionscale = gutilities::getG4Number(trimmedComponent);
        } else if (propertyName == "fasttimeconstant") {
            fasttimeconstant = gutilities::getG4Number(trimmedComponent);
        } else if (propertyName == "slowtimeconstant") {
            slowtimeconstant = gutilities::getG4Number(trimmedComponent);
        } else if (propertyName == "yieldratio") {
            yieldratio = gutilities::getG4Number(trimmedComponent);
        } else if (propertyName == "rayleigh") {
            rayleigh.push_back(gutilities::getG4Number(trimmedComponent));
        }
    }
 
    // Validation runs once, after all tokens for this property have been parsed.
    // Rayleigh is loaded last, so every other optical vector is fully populated and can be
    // cross-checked against photonEnergy here. (Running this inside the token loop fired on
    // the very first rayleigh value, before the vector was complete.)
    if (propertyName == "rayleigh") {
        // Rayleigh is loaded last: at this point we can validate that all other optical vectors
        // either are empty (not specified) or match the photonEnergy vector length.
        //
        // If they do not match, behavior is undefined because properties would be evaluated
        // at inconsistent energy grids.
        unsigned long photonEnergyVectorSize = photonEnergy.size();
 
        if (!indexOfRefraction.empty() && indexOfRefraction.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "indexOfRefraction size ", indexOfRefraction.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!absorptionLength.empty() && absorptionLength.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "absorptionLength size ", absorptionLength.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!reflectivity.empty() && reflectivity.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "reflectivity size ", reflectivity.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!efficiency.empty() && efficiency.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "efficiency size ", efficiency.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!fastcomponent.empty() && fastcomponent.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "fastcomponent size ", fastcomponent.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!slowcomponent.empty() && slowcomponent.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "slowcomponent size ", slowcomponent.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
        if (!rayleigh.empty() && rayleigh.size() != photonEnergyVectorSize) {
            log->error(gsystem::ERR_GMATERIALOPTICALPROPERTYMISMATCH,
                       "rayleigh size ", rayleigh.size(), " mismatch: photonEnergy has size ",
                       photonEnergyVectorSize);
        }
    }
}
 
 
bool GMaterial::assign_if_set(const std::vector<std::string> &pars, size_t &i, double &out) {
    if (i >= pars.size()) return false;
 
    const std::string trimmed =
            gutilities::removeLeadingAndTrailingSpacesFromString(pars[i++]); // owns storage
 
    std::string_view sv(trimmed);
    if (gutilities::is_unset(sv)) return false;
 
    try {
        out = std::stod(trimmed);
        return true;
    } catch (const std::exception &) {
        // Do not error here: malformed optional scalars are treated as "not set".
        return false;
    }
}