# Coordinate Systems
(a) Left handed coordinate system\
(b) Right handed coordinate system
[wiki - Right-hand rule](https://en.wikipedia.org/wiki/Right-hand_rule)
## Input coordinate system
### Roomle Script Coordinate System
The coordinate system for the component definitions JSON and the configuration JSON is a left handed coordinate system.
```json
{
"id": "catalog_id:coordinate_system",
"geometry": "
AddPrism(1000, Vector2f[{0, 0}, {2000, 0}, {0, 1000}]);
SetObjSurface('roomle_script_test:yellow');
"
}
```
### Plan XML Coordinate System
Left handed coordinate system
```xml
```
#### Object position in PlanXML
Left handed coordinate system
## Internal Roomle Core Coordinate System
### Configurator
Right handed coordinate system
This is also the coordinate system of all the meshes generated by the Configurator
### Planner
Right handed coordinate system
## External Mesh Coordinate System
Right handed coordinate system
```none
o Prism
v 0 0 0
v 2000 0 0
v 0 -1000 0
v 0 0 1000
v 2000 0 1000
v 0 -1000 1000
f 1 2 3
f 4 6 5
f 1 3 6
f 1 6 4
f 2 1 4
f 2 4 5
f 3 2 5
f 3 5 6
```
## API Coordinate System
The API coordinate system is a right handed coordinate system and the same as the internal Roomle Core coordinate system.
* Configurator API
* Positions and rotations: Right handed, internal Roomle Core coordinate system
* Meshes: Right handed, internal Roomle Core coordinate system
* Planner API
* Object positions: Right handed, internal Roomle Core coordinate system
* Meshes: Right handed, internal Roomle Core coordinate system
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