Add the files provided by guide author

Author: TheKitty

PyGamer_Improved_Thermal_Camera/code.py

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+# grayscale_spectrum.py
+# 2021-05-19 version 1.1
+# Copyright 2021 Cedar Grove Studios
+# Spectral Index to Grayscale RGB Converter Helper
+
+def map_range(x, in_min, in_max, out_min, out_max):
+    """
+    Maps and constrains an input value from one range of values to another.
+    (from adafruit_simpleio)
+    :return: Returns value mapped to new range
+    :rtype: float
+    """
+    in_range = in_max - in_min
+    in_delta = x - in_min
+    if in_range != 0:
+        mapped = in_delta / in_range
+    elif in_delta != 0:
+        mapped = in_delta
+    else:
+        mapped = 0.5
+    mapped *= out_max - out_min
+    mapped += out_min
+    if out_min <= out_max:
+        return max(min(mapped, out_max), out_min)
+    return min(max(mapped, out_max), out_min)
+
+def index_to_rgb(index=0, gamma=0.8):
+    """
+    Converts a spectral index to a grayscale RGB value. Spectral index in
+    range of 0.0 to 1.0. Gamma in range of 0.0 to 1.0 (1.0=linear),
+    default 0.8 for color TFT displays.
+    :return: Returns a 24-bit RGB value
+    :rtype: integer
+    """
+
+    red = grn = blu = map_range(index, 0, 1.0, 0.1, 1.0) ** gamma
+
+    return (int(red * 255) << 16) + (int(grn * 255) << 8) + int(blu * 255)

PyGamer_Improved_Thermal_Camera/fonts/OpenSans-9.bdf

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+# iron_spectrum.py
+# 2021-05-27 version 1.2
+# Copyright 2021 Cedar Grove Studios
+# Temperature Index to Iron Pseudocolor Spectrum RGB Converter Helper
+
+def map_range(x, in_min, in_max, out_min, out_max):
+    """
+    Maps and constrains an input value from one range of values to another.
+    (from adafruit_simpleio)
+    :return: Returns value mapped to new range
+    :rtype: float
+    """
+    in_range = in_max - in_min
+    in_delta = x - in_min
+    if in_range != 0:
+        mapped = in_delta / in_range
+    elif in_delta != 0:
+        mapped = in_delta
+    else:
+        mapped = 0.5
+    mapped *= out_max - out_min
+    mapped += out_min
+    if out_min <= out_max:
+        return max(min(mapped, out_max), out_min)
+    return min(max(mapped, out_max), out_min)
+
+def index_to_rgb(index=0, gamma=0.5):
+    """
+    Converts a temperature index to an iron thermographic pseudocolor spectrum
+    RGB value. Temperature index in range of 0.0 to 1.0. Gamma in range of
+    0.0 to 1.0 (1.0=linear), default 0.5 for color TFT displays.
+    :return: Returns a 24-bit RGB value
+    :rtype: integer
+    """
+
+    band = index * 600  # an arbitrary spectrum band index; 0 to 600
+
+    if band < 70:  # dark gray to blue
+        red = 0.1
+        grn = 0.1
+        blu = (0.2 + (0.8 * map_range(band, 0, 70, 0.0, 1.0))) ** gamma
+    if band >= 70 and band < 200:  # blue to violet
+        red = map_range(band, 70, 200, 0.0, 0.6) ** gamma
+        grn = 0.0
+        blu = 1.0 ** gamma
+    if band >= 200 and band < 300:  # violet to red
+        red = map_range(band, 200, 300, 0.6, 1.0) ** gamma
+        grn = 0.0
+        blu = map_range(band, 200, 300, 1.0, 0.0) ** gamma
+    if band >= 300 and band < 400:   # red to orange
+        red = 1.0 ** gamma
+        grn = map_range(band, 300, 400, 0.0, 0.5) ** gamma
+        blu = 0.0
+    if band >= 400 and band < 500:  # orange to yellow
+        red = 1.0 ** gamma
+        grn = map_range(band, 400, 500, 0.5, 1.0) ** gamma
+        blu = 0.0
+    if band >= 500:  # yellow to white
+        red = 1.0 ** gamma
+        grn = 1.0 ** gamma
+        blu = map_range(band, 500, 580, 0.0, 1.0) ** gamma
+
+    return (int(red * 255) << 16) + (int(grn * 255) << 8) + int(blu * 255)

PyGamer_Improved_Thermal_Camera/index_to_rgb/grayscale_spectrum.py

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+# visible_spectrum.py
+# 2021-05-27 version 1.2
+# Copyright 2021 Cedar Grove Studios
+# Spectral Index to Visible (Rainbow) Spectrum RGB Converter Helper
+# Based on original 1996 Fortran code by Dan Bruton:
+#   physics.sfasu.edu/astro/color/spectra.html
+
+def index_to_rgb(index=0, gamma=0.5):
+    """
+    Converts a spectral index to rainbow (visible light wavelength)
+    spectrum to an RGB value. Spectral index in range of 0.0 to 1.0
+    (violet --> white). Gamma in range of 0.0 to 1.0 (1.0=linear),
+    default 0.5 for color TFT displays.
+    :return: Returns a 24-bit RGB value
+    :rtype: integer
+    """
+
+    wl = (index * 320) + 380
+
+    if wl < 440:
+        intensity = 0.1 + (0.9 * (wl - 380) / (440 - 380))
+        red = ((-1.0 * (wl - 440) / (440 - 380)) * intensity) ** gamma
+        grn = 0.0
+        blu = (1.0 * intensity) ** gamma
+    if wl >= 440 and wl < 490:
+        red = 0.0
+        grn = (1.0 * (wl - 440) / (490 - 440)) ** gamma
+        blu = 1.0 ** gamma
+    if wl >= 490 and wl < 510:
+        red = 0.0
+        grn = 1.0 ** gamma
+        blu = (-1.0 * (wl - 510) / (510 - 490)) ** gamma
+    if wl >= 510 and wl < 580:
+        red = (1.0 * (wl - 510) / (580 - 510)) ** gamma
+        grn = 1.0 ** gamma
+        blu = 0.0
+    if wl >= 580 and wl < 645:
+        red = 1.0 ** gamma
+        grn = (-1.0 * (wl - 645) / (645 - 580)) ** gamma
+        blu = 0.0
+    if wl >= 645:
+        intensity = 0.3 + (0.7 * (700 - wl) / (700 - 645))
+        red = (1.0) ** gamma
+        grn = (1.0 - intensity) ** gamma
+        blu = (1.0 - intensity) ** gamma
+
+    return (int(red * 255) << 16) + (int(grn * 255) << 8) + int(blu * 255)

PyGamer_Improved_Thermal_Camera/index_to_rgb/iron_spectrum.py

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+# thermal_cam_config.py
+# ### Alarm and range default values in Farenheit ###
+ALARM_F     = 120
+MIN_RANGE_F =  60
+MAX_RANGE_F = 120
+
+# ### Display characteristics
+SELFIE = False  # Rear camera view; True for front view

PyGamer_Improved_Thermal_Camera/index_to_rgb/visible_spectrum.py

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+# thermal_cam_converters.py
+
+def celsius_to_fahrenheit(deg_c=None):  # convert C to F; round to 1 degree C
+    return round(((9 / 5) * deg_c) + 32)
+
+def fahrenheit_to_celsius(deg_f=None):  # convert F to C; round to 1 degree F
+    return round((deg_f - 32) * (5 / 9))