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# SPDX-License-Identifier: BSD-2-Clause
#
# Copyright (C) 2019, Raspberry Pi Ltd
#
# ctt_ransac.py - camera tuning tool RANSAC selector for Macbeth chart locator
import numpy as np
scale = 2
"""
constructs normalised macbeth chart corners for ransac algorithm
"""
def get_square_verts(c_err=0.05, scale=scale):
"""
define macbeth chart corners
"""
b_bord_x, b_bord_y = scale*8.5, scale*13
s_bord = 6*scale
side = 41*scale
x_max = side*6 + 5*s_bord + 2*b_bord_x
y_max = side*4 + 3*s_bord + 2*b_bord_y
c1 = (0, 0)
c2 = (0, y_max)
c3 = (x_max, y_max)
c4 = (x_max, 0)
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