g4display_options.cc

Go to the documentation of this file.

// g4display_options.cc
//
// Implementation of g4display option projection and option schema definition.
// Doxygen documentation for public behavior is authoritative in g4display_options.h (see rule 7).
 
#include "g4display_options.h"
#include "g4displayConventions.h"
#include "g4Text.h"
 
namespace g4display {
// Read g4view option and return a projected G4View struct.
G4View getG4View(const std::shared_ptr<GOptions>& gopts) {
    G4View g4view;
 
    // Project the YAML-like option node values into strongly-typed fields.
    g4view.driver        = gopts->getOptionMapInNode("g4view", "driver").as<std::string>();
    g4view.dimension     = gopts->getOptionMapInNode("g4view", "dimension").as<std::string>();
    g4view.position      = gopts->getOptionMapInNode("g4view", "position").as<std::string>();
    g4view.segsPerCircle = gopts->getOptionMapInNode("g4view", "segsPerCircle").as<int>();
 
    return g4view;
}
 
// Read the g4camera option and return a G4Camera struct.
G4Camera getG4Camera(const std::shared_ptr<GOptions>& gopts) {
    G4Camera gcamera;
 
    // Camera angles are stored as strings (often with units), and can be parsed later.
    gcamera.phi   = gopts->getOptionMapInNode("g4camera", "phi").as<std::string>();
    gcamera.theta = gopts->getOptionMapInNode("g4camera", "theta").as<std::string>();
 
    return gcamera;
}
 
// Read the dawn options and return a G4Dawn struct.
G4Dawn getG4Dawn(const std::shared_ptr<GOptions>& gopts) {
    G4Dawn gdawn;
 
    auto phi   = gopts->getOptionMapInNode("dawn", "phi").as<std::string>();
    auto theta = gopts->getOptionMapInNode("dawn", "theta").as<std::string>();
 
    // Normalize explicit "null" (string) to the “not defined” sentinel used by options.
    if (phi == "null") phi = goptions::NODFLT;
    if (theta == "null") theta = goptions::NODFLT;
 
    gdawn.phi   = phi;
    gdawn.theta = theta;
 
    return gdawn;
}
 
// Define and return the option set for the g4display module.
GOptions defineOptions() {
    GOptions goptions(G4DISPLAY_LOGGER);
 
    // The module also defines options for g4scene helpers (same executable context).
    goptions += GOptions(G4SCENE_LOGGER);
 
    std::string help;
 
    // g4view
    std::vector<GVariable> g4view = {
        {"driver", std::string(GDEFAULTVIEWERDRIVER), "Geant4 vis driver"},
        {"dimension", std::string(GDEFAULTVIEWERSIZE), "g4 viewer dimension"},
        {"position", std::string(GDEFAULTVIEWERPOS), "g4 viewer position"},
        {"segsPerCircle", GDEFAULTVSEGPERCIRCLE, "Number of segments per circle"}
    };
 
    help = "Defines the geant4 viewer properties:  \n ";
    help += " - screen dimensions  \n ";
    help += " - screen position  \n ";
    help += " - resolution in terms of segments per circle  \n ";
    help +=
        " Example: -g4view={viewer: \"OGL\", dimension: \"1100x800\", position: \"+200+100\", segsPerCircle: 100}  \n \n";
    help += "-g4view=\"[{dimensions: 1200x1000}]\"\n";
 
    goptions.defineOption("g4view", "Defines the geant4 viewer properties", g4view, help);
 
    // g4camera
    std::vector<GVariable> g4camera = {
        {"phi", "0*deg", "geant4 camera phi"},
        {"theta", "0*deg", "geant4 camera theta"}
    };
 
    help = "Defines the geant4 camera view point  \n \n ";
    help += "Example: -g4camera=\"[{phi: 20*deg, theta: 15*deg}]\"  \n ";
 
    goptions.defineOption("g4camera", "Defines the geant4 camera view point", g4camera, help);
 
    // dawn
    help = "Defines the dawn camera view point and take a dawn screenshot \n \n ";
    help += "Example: -dawn=\"[{phi: 20*deg, theta: 15*deg}]\"  \n ";
 
    std::vector<GVariable> dawn = {
        {"phi", 30, "dawn phi"},
        {"theta", 30, "dawn theta"}
    };
 
    goptions.defineOption("dawn", "Defines the dawn view point", dawn, help);
    goptions.defineSwitch("useDawn", "Take a dawn screenshot");
 
    // scenetext
    goptions.addGOptions(addSceneTextsOptions());
 
    return goptions;
}
} // namespace g4display