31 lines
744 B
Python
31 lines
744 B
Python
import numpy as np
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def sperical2equirec(theta, phi, img_w, img_h):
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u = np.deg2rad(theta) / (2 * np.pi)
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v = np.deg2rad(phi) / np.pi
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x = u * img_w
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y = v * img_h
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return x, y
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def equirec2spherical(x, y, img_w, img_h):
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# Normalize coordinates
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u = x / img_w
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v = y / img_h
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# Calculate spherical coordinates from normalized coordinates
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# theta is horizontal angle, phi is polar angle
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theta = u * 2 * np.pi
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phi = v * np.pi
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return np.rad2deg(theta), np.rad2deg(phi)
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def get_circle(radius):
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""" helper function returns circle to x, y coordinates"""
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theta = np.linspace(0, 2 * np.pi, 100)
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x = radius * np.cos(theta)
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y = radius * np.sin(theta)
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return np.array(x), np.array(y)
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