B4J Question jgoogle map question

[PoleStar]

hello my freinds ,I took a polygon with jgooglemap library How can a point inside the polygon or not?
and How to calculate polygon area?
tanks

 

[PoleStar]

No one came to help?

 

[inakigarm]

Search for "point inside a polygon" and possibly the questions are answered at post #2 (point) and #5 (area)

 

[PoleStar]

Thanks for your reply
But I can not find this threads

Put it could be possible link
tanks

 

[inakigarm]

There's a text Box in top right Page on community forum to do searches:

https://www.b4x.com/android/forum/pages/results/?query=point+inside+a+polygon&page=1&prefix=0

 

[PoleStar]

but Navigation library not to b4j

 

[inakigarm]

You can ask Derez if it's really a only B4A lib or made the calcs by yourself http://www.mathopenref.com/coordpolygonarea2.html

 

[PoleStar]

tanks but I could not understand the formula