mirror of
https://github.com/Hopiu/rpi-rgb-led-matrix.git
synced 2026-03-16 22:10:27 +00:00
59 lines
No EOL
2.1 KiB
Python
Executable file
59 lines
No EOL
2.1 KiB
Python
Executable file
#!/usr/bin/env python
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from samplebase import SampleBase
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import math
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class RotatingBlockGenerator(SampleBase):
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def __init__(self, *args, **kwargs):
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super(RotatingBlockGenerator, self).__init__(*args, **kwargs)
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def Rotate(self, x, y, angle):
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return {
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"new_x": x * math.cos(angle) - y * math.sin(angle),
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"new_y": x * math.sin(angle) + y * math.cos(angle)
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}
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def scale_col(self, val, lo, hi):
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if val < lo:
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return 0
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if val > hi:
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return 255
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return 255 * (val - lo) / (hi - lo)
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def Run(self):
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cent_x = self.matrix.width / 2
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cent_y = self.matrix.height / 2
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rotate_square = min(self.matrix.width, self.matrix.height) * 1.41
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min_rotate = cent_x - rotate_square / 2
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max_rotate = cent_x + rotate_square / 2
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display_square = min(self.matrix.width, self.matrix.height) * 0.7
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min_display = cent_x - display_square / 2
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max_display = cent_x + display_square / 2
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deg_to_rad = 2 * 3.14159265 / 360
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rotation = 0
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offsetCanvas = self.matrix.CreateFrameCanvas()
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while True:
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rotation += 1
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rotation %= 360
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for x in range(int(min_rotate), int(max_rotate)):
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for y in range(int(min_rotate), int(max_rotate)):
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ret = self.Rotate(x - cent_x, y - cent_x, deg_to_rad * rotation)
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rot_x = ret["new_x"]
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rot_y = ret["new_y"]
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if x >= min_display and x < max_display and y >= min_display and y < max_display:
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offsetCanvas.SetPixel(rot_x + cent_x, rot_y + cent_y, self.scale_col(x, min_display, max_display), 255 - self.scale_col(y, min_display, max_display), self.scale_col(y, min_display, max_display))
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else:
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offsetCanvas.SetPixel(rot_x + cent_x, rot_y + cent_y, 0, 0, 0)
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offsetCanvas = self.matrix.SwapOnVSync(offsetCanvas)
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# Main function
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if __name__ == "__main__":
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parser = RotatingBlockGenerator()
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if (not parser.process()):
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parser.print_help() |