pvcollada
PVCollada Coordinate Transformation Guide
ENU Coordinate Frame
PVCollada uses a local East‑North‑Up (ENU) coordinate system:
- x → East
- y → North
- z → Up
The origin (0,0,0) corresponds to the latitude and longitude stored in the COLLADA document.
Example Geometry
Cube definition:
- lower corner
(1,1,1) - size
(3,2,1)
Origin location:
- Albuquerque, NM, USA
- Latitude
35.0845 - Longitude
-106.651 - Projection
EPSG:32613
Diagram
The diagram shows the cube in the local coordinate system along with the ENU axes.
Computed Geographic Coordinates
| x | y | z | latitude | longitude | height |
|---|---|---|---|---|---|
| 1 | 1 | 1 | 35.08450916 | -106.65098922 | 1 |
| 4 | 1 | 1 | 35.08450961 | -106.65095632 | 1 |
| 1 | 3 | 1 | 35.08452719 | -106.65098958 | 1 |
| 4 | 3 | 1 | 35.08452764 | -106.65095668 | 1 |
| 1 | 1 | 2 | 35.08450916 | -106.65098922 | 2 |
| 4 | 1 | 2 | 35.08450961 | -106.65095632 | 2 |
| 1 | 3 | 2 | 35.08452719 | -106.65098958 | 2 |
| 4 | 3 | 2 | 35.08452764 | -106.65095668 | 2 |
Python Example
from pyproj import Transformer
lat0 = 35.0845
lon0 = -106.651
transformer_to_utm = Transformer.from_crs("EPSG:4326","EPSG:32613",always_xy=True)
transformer_to_wgs = Transformer.from_crs("EPSG:32613","EPSG:4326",always_xy=True)
E0,N0 = transformer_to_utm.transform(lon0,lat0)
x,y,z = 1,1,1
E = E0 + x
N = N0 + y
lon,lat = transformer_to_wgs.transform(E,N)
print(lat,lon)