C# programming using Windows Visual Studio

Programming Lanugage: C# (C Sharp Not Other C Language) - Need to marks for point manually then the four point will auto link together as seen as the first picture - Then when I press a button, it will come out many small box inside the point that linked - To make a browse photo, because not every place in the photo needs to be detected, so use the mouse to point four points, and then the four points will be connected to form a polygon like the first photo in the pdf, and then press the button Then it will look like the second photo of the pdf. In the four points I drew. Detect the moss in the drain, that is, there are many small grids to let me know where there is a grid in the range of pointed. Small grids will appear if there is moss, And then the small grid inside should be able to choose size, 20x20, 30x30 and so on. -Need to points four points first, then it linked and become a polygon like the first picture in PDF I given, then after press a button, it will generate many small box like the second picture in PDF inside the polygon which is the four point that linked. For the gap between boxes, if small boxes generated, gap need to very near, if medium or bigger boxes, need to have some gap like the second picture in PDF. - Something like that, use mouse to click four point, then the four point clicked will form polygon like the first image in PDF I given, then click a button, it will generate many small boxes inside the polygon which is inside the four points that clicked - But actually the small boxes is showing the moss, Something like detect the moss in the drain Tell me *How long it will take to complete? When can you start sooner? How much do you charge?* Refer to the PDF attachement