Python bindings for Rust Planetarium rendering library
Project description
PyPlanetarium
Python bindings for Planetarium sub-pixel precision light spot rendering library for astronomy and video tracking applications.
Example usage
from pyplanetarium import Canvas, SpotShape, ImageFormat
# Draw on a square 256x256 pixel canvas.
c = Canvas.new(256, 256)
# Define a round spot shape with diffraction radius of 2.5 pixels.
shape = SpotShape().scale(2.5)
# Add some spots at random positions with varying shape size
# and peak intensity.
spot1 = c.add_spot((100.3, 130.8), shape, 0.5)
spot2 = c.add_spot((80.6, 200.2), shape.scale(0.5), 0.9)
# Note: Out of range position coordinates and peak intensities are fine.
# The resulting spot image is clipped into the canvas rectangle.
# Peak intensity > 1.0 leads to saturation to the maximum pixel value.
spot3 = c.add_spot((256.1, 3.5), shape.scale(10.0), 1.1)
# Set the canvas background pixel value.
c.set_background(100)
# Clear the canvas and paint the light spots.
c.draw()
# Export to a 8-bit gamma-compressed grayscale PNG image.
png_8bpp_bytes = c.export_image(ImageFormat.PngGamma8Bpp)
# Export to a 16-bit linear light grayscale PNG image.
png_16bpp_bytes = c.export_image(ImageFormat.PngLinear16Bpp)
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