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21 lines
662 B
Python
21 lines
662 B
Python
from panda3d import core
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def luminance(col):
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return 0.2126 * col[0] + 0.7152 * col[1] + 0.0722 * col[2]
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def test_light_colortemp():
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# Default is all white, assuming a D65 white point.
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light = core.PointLight("light")
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assert light.color == (1, 1, 1, 1)
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assert light.color_temperature == 6500
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# When setting color temp, it should preserve luminance.
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for temp in range(2000, 15000):
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light.color_temperature = temp
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assert abs(luminance(light.color) - 1.0) < 0.001
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# Setting it to the white point will make a white color.
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light.color_temperature = 6500
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assert light.color.almost_equal((1, 1, 1, 1), 0.001)
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