Monte Carlo Radiative Transfer tool
Input is the parameters file. Example parameters.json5:
{
tree : { Here : { // Use these tree settings.
tar_tris : 5, // Target num triangles per leaf cell.
max_depth : 6, // Maximum tree splitting depth.
padding : 0.01, // Fraction to increase leaf cells dimensions during detection.
}},
grid : { Here : { // Use these grid settings.
boundary: { // Grid bounds.
mins: [-10, -10, -10], // Minimum bound.
maxs: [ 10, 10, 10], // Maximum bound.
},
res: [64, 64, 64], // Grid resolution.
} },
sett : { Here : { // Use these simulation settings.
num_phot : 1e6, // Number of photons to simulate.
block_size : 1e2, // Photons to simulate per block.
bump_dist : 1e-6, // Bump distance.
loop_limit : 1e6, // Maximum number of events before culling.
min_weight : 5e-2, // Minimum simulation weight.
roulette_barrels : 8, // Roulette survival fraction.
init_mat : 'air', // Emission material.
} },
engine : "Basic", // Operation engine selection.
light : { Here : { // Use these light settings.
power : 1.0, // Power [watts].
emit : { Surface: [['objs/light.obj'], null] }, // Emit from a mesh surface - no transformations.
spec : { Here: {Point: 6.3e-7}}, // Use this laser spectrum (630nm).
} },
mats : { Here : { // Use this material map.
air : { There : 'mats/air.json5' }, // Air properties there.
fog : { There : 'mats/fog.json5' }, // Fog properties there.
} },
attrs : { Here : { // Use these attributes.
mirr : { Mirror: 0.99 }, // 99% reflective mirror.
fog : { Refractive: ['air', 'fog'] }, // Interface between air and fog.
} },
surfs : { Here : { // Use these surfaces.
centrepiece : {
mesh : [["objs/cube.obj"], {scale: 1.1} ], // Use this surface - scale it up 10%.
attr : 'fog', // Make it an interface.
},
mirror : {
mesh : [["objs/mirrors.obj"], null], // Use this surface - no transformations.
attr : 'mirr', // Make it reflective.
}
} },
}Output in the form of netcdf datacubes.
Example energy density of the above input:
