to_block

giant.ray_tracer.utilities:

giant.ray_tracer.utilities.to_block(vals)

This helper function takes a list of lists/arrays and puts them all into a single contiguous array

This is used when ray tracing rays that have ignore lists of different lengths. It works by iterating through, determining the maximum length of the “rows”, creating a new array of -1 with this many columns, and then assigning each row to this new array.

For instance, an input of the form

[[1, 2, 3], [0, 1], [7, 8, 3, 4]]

will be converted to

np.array([[1, 2, 3, -1], [0, 1, -1, -1], [7, 8, 3, 4]])

Parameters:

vals (Sequence | ndarray) – A ragged list of lists or arrays that is to be converted into a single contiguous array

Returns:

the contiguous block

Return type:

ndarray