mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-27 16:48:09 +00:00
38 lines
1.4 KiB
Python
Executable File
38 lines
1.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# script used to generate /embed/extmod/modtrezorui/loader.h
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import math
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outer = 60
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inner = 42
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with open("loader.h", "wt") as f:
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f.write("static const int img_loader_size = %d;\n" % outer)
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f.write("static const uint16_t img_loader[%d][%d] = {\n" % (outer, outer))
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for y in range(outer):
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f.write(" {")
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for x in range(outer):
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d = math.sqrt((outer - 1 - x) ** 2 + (outer - 1 - y) ** 2)
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c = {}
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for i in [5, 15]:
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if (inner - 0.5 <= d) and (d <= inner + 0.5):
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c[i] = 15 * (d - inner + 0.5)
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elif (inner + 0.5 <= d) and (d <= inner + 1.5):
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c[i] = 15
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elif (inner + 1.5 <= d) and (d <= inner + 2.5):
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c[i] = 15 if i == 15 else 15 - (15 - i) * (d - inner - 1.5)
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elif (outer - 1.5 <= d) and (d <= outer - 0.5):
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c[i] = i - i * (d - outer + 1.5)
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elif (inner + 2.5 < d) and (d < outer - 1.5):
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c[i] = i
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else:
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c[i] = 0
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# clamp (should not be needed)
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c[i] = max(0, min(int(c[i]), 15))
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a = int(math.atan2((outer - 1 - x), (outer - 1 - y)) * 2 * 249 / math.pi)
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v = (a << 8) | (c[15] << 4) | c[5]
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f.write("%d," % v)
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f.write("},\n")
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f.write("};\n")
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