Ld-Hagen/GPXtoCNXConverter
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optimization

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This commit is contained in:
Maksim Ivanov
2025-12-05 22:07:08 +03:00
committed by GitHub
parent 8af502422c
commit 7e12746165
1 changed files with 7 additions and 10 deletions
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17
src/gpx2cnx.py
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@@ -174,8 +174,7 @@ class GPX2CNX:
first_ele = (track_points[0]['ele'] * 100).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
relative_points = [f"{first_lat},{first_lon},{first_ele}"] # First Point - Absolute Coordinates
first_diffs = []
prev_diffs = ()
for i in range(1, len(track_points)): # Calc first diffs
lat1 = track_points[i-1]['lat']
lon1 = track_points[i-1]['lon']
@@ -185,23 +184,21 @@ class GPX2CNX:
lat_diff = (lat2 - lat1) * 10000000
lon_diff = (lon2 - lon1) * 10000000
ele_diff = track_points[i]['ele'] * 100 - track_points[i-1]['ele'] * 100
first_diffs.append((lat_diff, lon_diff, ele_diff))
diffs = (lat_diff, lon_diff)
if i == 1: # Second Point
lat_diff = lat_diff.quantize(Decimal('1'), decimal.ROUND_HALF_UP)
lon_diff = lon_diff.quantize(Decimal('1'), decimal.ROUND_HALF_UP)
ele_diff = ele_diff.quantize(Decimal('1'), decimal.ROUND_HALF_UP)
relative_points.append(f"{lat_diff},{lon_diff},{ele_diff}")
if i > 1: # Third point and subsequent
lat_diff = (lat_diff - first_diffs[i-2][0]).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
lon_diff = (lon_diff - first_diffs[i-2][1]).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
else: # Third point and subsequent
lat_diff = (lat_diff - prev_diffs[0]).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
lon_diff = (lon_diff - prev_diffs[1]).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
ele_diff = (ele_diff).quantize(Decimal('1'), decimal.ROUND_HALF_UP)
relative_points.append(f"{lat_diff},{lon_diff},{ele_diff}")
prev_diffs = diffs
# Create XML
route = ET.Element('Route')
ET.SubElement(route, 'Id').text = track_name # Use track name as Id