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Click on object detection help

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Click on object detection help
« on: February 07, 2015, 05:43:15 »
I've been teaching my self java for a while now. I know i am doing some things really wrong and I have been playing with hexagon grids lately and i cant figure you how to get onClick to work right i would love some help.

Here is the github link to my project & where the problem is.: https://github.com/that1guy232/ZK/blob/master/src/com/that1guy232/ZK/Hexagon.java

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Offline abcdef

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Re: Click on object detection help
« Reply #1 on: February 07, 2015, 08:12:27 »
try and google for "check if a point is inside a hexagon", there are plenty of results telling you the maths to do this

Re: Click on object detection help
« Reply #2 on: February 07, 2015, 18:33:48 »
try and google for "check if a point is inside a hexagon", there are plenty of results telling you the maths to do this

Thanks, I came across http://www.codeproject.com/Tips/84226/Is-a-Point-inside-a-Polygon but i'm not quite sure i understand it. A little more help would be great!

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Offline quew8

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Re: Click on object detection help
« Reply #3 on: February 08, 2015, 16:28:23 »
What about this do you not understand? If it's the algorithm, and you want to understand it conceptually there there is a little paper written on it here: http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html.

But there is no need to understand the algorithm, you have been given a method in C that almost works in Java already. Change the "c" to a boolean variable. Change the method to return a boolean variable. Replace C pointers/number of vertices parameter with Java array(s).