OffsetMapper

class ginga.canvas.coordmap.OffsetMapper(viewer, refobj)[source]

Bases: ginga.canvas.coordmap.BaseMapper

A coordinate mapper that maps to the viewer in data coordinates that are offsets relative to some other reference object.

Methods Summary

calc_offsets(pts)
data_to(data_pts[, viewer])
offset_pt(pts, offset)
rotate_pt(pts, theta, offset)
to_data(delta_pt[, viewer])

Methods Documentation

calc_offsets(pts)[source]
data_to(data_pts, viewer=None)[source]
offset_pt(pts, offset)[source]
rotate_pt(pts, theta, offset)[source]
to_data(delta_pt, viewer=None)[source]