EBSDDetector#

class de_ebsd.sim.EBSDDetector(shape=(480, 480), pattern_center=(0.5, 0.5, 0.5), sample_tilt=70.0, tilt=0.0, azimuthal=0.0, twist=0.0, px_size=1.0)[source]#

Bases: object

An EBSD detector with a fixed pattern center.

Parameters:

shape: (n_rows, n_cols) in pixels.
pattern_center: Pattern center (PCx, PCy, PCz) in the Bruker convention.
sample_tilt: Sample tilt in degrees (usually set from Microscope.sample_tilt).
tilt: Detector tilt in degrees.
azimuthal: Detector azimuthal angle in degrees.
twist: Detector twist about its normal, in degrees.
px_size: Effective screen pixel pitch in micrometers, including binning (not camera sensor pitch). Used for physical dimensions in the inspector; pattern projection itself only depends on the normalized PC.

Methods

`direction_cosines`	Unit direction vectors (n_rows * n_cols, 3) in the sample frame.
`show`	Interactive screen placement and PC editor, also exportable to HTML.

Attributes

`aspect_ratio`
`azimuthal`
`corners_sample_mm`	Top-left clockwise corners relative to the beam impact, in mm.
`gnomonic_bounds`	Detector bounds [x_min, x_max, y_min, y_max] in gnomonic coordinates.
`ncols`
`nrows`
`pattern_center`
`pattern_center_sample_mm`	Perpendicular foot from impact to screen, in sample coordinates.
`px_size`
`sample_tilt`
`shape`
`size`
`tilt`
`twist`

property corners_sample_mm#

Top-left clockwise corners relative to the beam impact, in mm.

Uses the same Bruker PC and frame transform as direction_cosines. Physical distances assume px_size is the effective screen pixel pitch (including binning), not the camera sensor’s pixel pitch.

direction_cosines(device=None, dtype=torch.float32)[source]#

Unit direction vectors (n_rows * n_cols, 3) in the sample frame.

Row-major over the detector (row 0 = top). Port of kikuchipy _get_direction_cosines_for_fixed_pc.

property gnomonic_bounds#: Detector bounds [x_min, x_max, y_min, y_max] in gnomonic coordinates.

property pattern_center_sample_mm#: Perpendicular foot from impact to screen, in sample coordinates.

show(microscope=None, crystal=None)[source]#

Interactive screen placement and PC editor, also exportable to HTML.

If a microscope is supplied, its sample tilt and azimuth must match. Edits are a separate snapshot; read them with widget.to_detector().