raytraverse.craytraverse

raytraverse helper functions written in c++

raytraverse.craytraverse.from_pdf(pdf: numpy.ndarray[numpy.float64], threshold: float, lb: float = 0.5, ub: float = 4.0) → tuple

helper function for draw.from_pdf

Parameters

• pdf (np.array) – array of doubles with weights to check against threshold

• threshold (float) – value used to determine the number of indices to return

• lb (float, optional) – values below threshold * lb will be excluded from candidates (lb must be in (0,1)

• ub (float, optional) – values above threshold * ub will have indices written to bidx

Returns

• candidates (np.array) – array of candidate indices

• bidx (np.array) – array of definitely included indices

• nsampc (int) – the number of draws that should be selected from the candidates

raytraverse.craytraverse.interpolate_kdquery(destvec: numpy.ndarray[numpy.float64], errs: numpy.ndarray[numpy.float64], idxs: numpy.ndarray[numpy.int32], srcvec: numpy.ndarray[numpy.float64], srclum: numpy.ndarray[numpy.float64], err: float = 0.00436) → numpy.ndarray[numpy.float64]

interpolate luminance values associated with query results from scipy.cKDTree.query. Finds closest point and then locates vertices of enclosing triangle from this point. returns 0 in cases where the query provides no results, so the distance_upper_bound must be set appropriately.

Parameters

• dest_vec (np.array) – destination vectors to interpolate to, shape (N, 3)

• errs (np.array) – distances between src and destination (row matches dest_vec, column is sorted ascending), shape (N, # of queries)

• idxs (np.array) – query result, index row in src_vec close to dest_vec, shape (N, # of queries)

• src_vec (np.array) – vectors of src_kd, shape (N, 3)

• src_lum (np.array) – luminance values for src_kd, shape (src_vec.shape[0], srcn)

• err (float, optional) – distance below which closest sample is used directly

Returns

arrout – destination luminances shape (N, srcn)

Return type

np.array

cRtrace

class raytraverse.crenderer.cRtrace

Bases: pybind11_builtins.pybind11_object

call(self: raytraverse.crenderer.rtrace_c.cRtrace, arg0: str) → None

get_instance() → raytraverse.crenderer.rtrace_c.cRtrace

initialize(self: raytraverse.crenderer.rtrace_c.cRtrace, arg0: object) → None

pyargv11 (a sequence of strings) must be a member of calling instance and persist for duration of program

load_scene(self: raytraverse.crenderer.rtrace_c.cRtrace, arg0: str) → None

load_source(self: raytraverse.crenderer.rtrace_c.cRtrace, srcname: str, freesrc: int = - 1) → None

reset(*args) → None

reset_instance(*args) → None

update_ospec(self: raytraverse.crenderer.rtrace_c.cRtrace, vs: str, of: str = 'z') → None

version = 'RADIANCE 5.4a 2020-10-08 LBNL (..)'

cRcontrib

class raytraverse.crenderer.cRcontrib

Bases: pybind11_builtins.pybind11_object

call(self: raytraverse.crenderer.rcontrib_c.cRcontrib, arg0: str) → None

get_instance() → raytraverse.crenderer.rcontrib_c.cRcontrib

initialize(self: raytraverse.crenderer.rcontrib_c.cRcontrib, arg0: object) → None

load_scene(self: raytraverse.crenderer.rcontrib_c.cRcontrib, arg0: str) → None

reset(*args) → None

reset_instance(*args) → None

version = 'RADIANCE 5.4a 2020-10-08 LBNL (..)'