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restore aspect ratio sizing

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This commit is contained in:
Alex Matulich
2025-05-13 00:16:28 -07:00
parent a6eb1fbf3c
commit fbac110ee5
1 changed files with 9 additions and 5 deletions
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14
scripts/geotiff2scad.py
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@@ -75,21 +75,25 @@ args = parser.parse_args()
# ----------------------------
# Parse resize dimensions
# ----------------------------
def parse_resize(resize_str):
def parse_resize(resize_str, aspect):
if "x" in resize_str:
w, h = map(int, resize_str.lower().split("x"))
else:
else: # use aspect ratio to get height
w = int(resize_str)
h = int(w / 2) # Assume 2:1 equirectangular aspect ratio
h = int(round(w * aspect))
return w, h
output_width, output_height = parse_resize(args.resize)
output_width = 0
output_height = 0
# ----------------------------
# Load GeoTIFF and downsample
# ----------------------------
print(f"Reading data from {args.input_file} and resampling to {output_width}×{output_height}")
with rasterio.open(args.input_file) as src:
input_width = src.width
input_height = src.height
output_width, output_height = parse_resize(args.resize, input_width/input_height)
print(f"Reading data from {args.input_file} and resampling to {output_width}×{output_height}")
data = src.read(1, out_shape=(1, output_height, output_width), resampling=Resampling.bilinear)
print("Processing data")
# Replace nodata values