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"""
This module shows you how to perform various kinds of density calculations.
"""
# Does some sys.path manipulation so we can run examples in-place.
# noinspection PyUnresolvedReferences
import example_config
from colormath.color_objects import SpectralColor
from colormath.density_standards import ANSI_STATUS_T_RED, ISO_VISUAL
EXAMPLE_COLOR = SpectralColor(
observer=2, illuminant='d50',
spec_380nm=0.0600, spec_390nm=0.0600, spec_400nm=0.0641,
spec_410nm=0.0654, spec_420nm=0.0645, spec_430nm=0.0605,
spec_440nm=0.0562, spec_450nm=0.0543, spec_460nm=0.0537,
spec_470nm=0.0541, spec_480nm=0.0559, spec_490nm=0.0603,
spec_500nm=0.0651, spec_510nm=0.0680, spec_520nm=0.0705,
spec_530nm=0.0736, spec_540nm=0.0772, spec_550nm=0.0809,
spec_560nm=0.0870, spec_570nm=0.0990, spec_580nm=0.1128,
spec_590nm=0.1251, spec_600nm=0.1360, spec_610nm=0.1439,
spec_620nm=0.1511, spec_630nm=0.1590, spec_640nm=0.1688,
spec_650nm=0.1828, spec_660nm=0.1996, spec_670nm=0.2187,
spec_680nm=0.2397, spec_690nm=0.2618, spec_700nm=0.2852,
spec_710nm=0.2500, spec_720nm=0.2400, spec_730nm=0.2300)
def example_auto_status_t_density():
print("=== Example: Automatic Status T Density ===")
# If no arguments are provided to calc_density(), ANSI Status T density is
# assumed. The correct RGB "filter" is automatically selected for you.
print("Density: %f" % EXAMPLE_COLOR.calc_density())
print("=== End Example ===\n")
def example_manual_status_t_density():
print("=== Example: Manual Status T Density ===")
# Here we are specifically requesting the value of the red band via the
# ANSI Status T spec.
print("Density: %f (Red)" % EXAMPLE_COLOR.calc_density(
density_standard=ANSI_STATUS_T_RED))
print("=== End Example ===\n")
def example_visual_density():
print("=== Example: Visual Density ===")
# Here we pass the ISO Visual spectral standard.
print("Density: %f" % EXAMPLE_COLOR.calc_density(
density_standard=ISO_VISUAL))
print("=== End Example ===\n")
# Feel free to comment/un-comment examples as you please.
example_auto_status_t_density()
example_manual_status_t_density()
example_visual_density()
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