geos.GEOSOrientationIndex ⇒ number ⏏
For the points formed by the six input ordinates, walking from A to B and then to P.
Kind: global property of geos
Returns: number - -1 if reaching P takes a counter-clockwise (left) turn, 1 if reaching P takes a clockwise (right) turn, 0 if P is collinear with A-B
| Param | Type | Description |
|---|---|---|
| Ax | number | X coordinate of A |
| Ay | number | Y coordinate of A |
| Bx | number | X coordinate of B |
| By | number | Y coordinate of B |
| Px | number | X coordinate of P |
| Py | number | Y coordinate of P |
geos.GEOSOrientationIndex_r ⇒ number ⏏
For the points formed by the six input ordinates, walking from A to B and then to P.
Kind: global property of geos
Returns: number - -1 if reaching P takes a counter-clockwise (left) turn, 1 if reaching P takes a clockwise (right) turn, 0 if P is collinear with A-B
| Param | Type | Description |
|---|---|---|
| handle | GEOSContextHandle_t | - |
| Ax | number | X coordinate of A |
| Ay | number | Y coordinate of A |
| Bx | number | X coordinate of B |
| By | number | Y coordinate of B |
| Px | number | X coordinate of P |
| Py | number | Y coordinate of P |