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58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
3 years ago
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#!/usr/bin/env python3
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import cairo
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import math
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import random
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from utils import circle_fill
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from utils import draw_crater
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from utils import random_color
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WIDTH, HEIGHT = 1000, 1000
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def main():
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surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)
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ctx = cairo.Context(surface)
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ctx.scale(WIDTH, HEIGHT) # Normalizing the canvas
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ctx.set_source_rgb(0.9, 0.9, 0.9)
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# draw "full" moon
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circle_fill(ctx, 0.5, 0.5, 0.5)
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# make sure we only draw "inside"
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ctx.set_operator(cairo.Operator.ATOP)
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# draw craters
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ctx.set_source_rgb(0.5, 0.5, 0.5)
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for c in range(30):
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#c_col = random.uniform(0.4, 0.6)
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#ctx.set_source_rgb(c_col, c_col, c_col)
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c_x = random.uniform(0.0, 1.0)
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c_y = random.uniform(0.0, 1.0)
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c_r = random.uniform(0.01, 0.1)
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draw_crater(ctx, c_x, c_y, c_r)
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# draw "aura"
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a_r, a_g, a_b = random_color()
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p = cairo.RadialGradient(0.5, 0.5, 0.25, 0.5, 0.5, 0.5)
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#p.add_color_stop_rgba(0.0, 0.9, 0.9, 0.9, 0.0)
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p.add_color_stop_rgba(0.0, a_r, a_g, a_b, 0.0)
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p.add_color_stop_rgba(0.3, a_r, a_g, a_b, 0.0)
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p.add_color_stop_rgba(1.0, a_r, a_g, a_b, 0.8)
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ctx.set_source(p)
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ctx.arc(0.5, 0.5, 0.5, 0, math.pi*2)
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#ctx.arc(0.5, 0.5, 0.3, 0, math.pi*2)
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ctx.fill()
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# draw "shade" of the phase
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ctx.set_source_rgba(0.1, 0.1, 0.1, 0.95)
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phase_pos = random.uniform(-0.5, 1.5)
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circle_fill(ctx, phase_pos, 0.5, 0.5)
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surface.write_to_png("out/moon.png") # Output to PNG
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if __name__ == '__main__':
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main()
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