Function pointInPolygon() judges whether a 2D coordinate locates in (not outside or on ) the boundary of a polygon, and returns 1 for true, 0 for false.
Arguments：
- 2D coordinates <point|list>
- Polygon <list>
Returns：
- Result <number>
Common Usage
Exalmple: Direct calculate
uncollect [[1.5,0.5],[2,2]] as point
uncollect [[[1,0],[3,0],[3,1],[1,1]],[[1,0],[2,1],[1,2],[0,1]]] as polygon
return table(toString(point), toString(polygon), pointInPolygon(point, polygon))
| toString(point) | toString(polygon) | pointInPolygon(point, polygon) |
|-----------------|---------------------------|--------------------------------|
| [1.5,0.5] | [[1,0],[3,0],[3,1],[1,1]] | 1 |
| [2,2] | [[1,0],[2,1],[1,2],[0,1]] | 0 |
Exalmple: Multiply and calculate
uncollect [[1.5,0.5],[2,2]] as point
uncollect [[[1,0],[3,0],[3,1],[1,1]],[[1,0],[2,1],[1,2],[0,1]]] as polygon
with pointInPolygon(point, polygon) as result
return table(toString(point), toString(polygon), result)
| toString(point) | toString(polygon) | result |
|-----------------|---------------------------|--------|
| [1.5,0.5] | [[1,0],[3,0],[3,1],[1,1]] | 1 |
| [1.5,0.5] | [[1,0],[2,1],[1,2],[0,1]] | 0 |
| [2,2] | [[1,0],[3,0],[3,1],[1,1]] | 0 |
| [2,2] | [[1,0],[2,1],[1,2],[0,1]] | 0 |