Still seeking ways to draw rotate ovals

[Richard_Allmendinger]

@Nicholas_Loveday

Ya… but the methods available in XOJO cannot determine whether the user has clicked within say 4 pixels of the path of a complex open curve like a spline, or the edge of the tooth of a gear created as a vector object (from CAD) and displayed in XOJO.

I’ll admit I’ve never tested the GraphicsPath.contains function for accuracy because I use a PointInPolygon function written long ago in Fortran and rewritten by Rick Araujo for modern Xojo. I don’t keep graphic objects around. All of my basic data are GIS linestrings, multilinestrings, etc with all of the coordinates in longitude and latitude.

Here’s a link to the PtInPoly code in case it’s of use to anyone:

Calculate uregular bounds of Drawpath

Here’s Ricks simplification of my code, but passing the variables as Points rather than Pairs. I gather from the documentation that Points (which have always worked in iOS framework) are now available in the desktop frameworks as of 2019r2. Note that the Subtract operator works with points so we can simplify the first for loop a bit [code]Public Function PointInPoly(p as Point, xy() as Point) as Boolean // Parameters: // p - a Point with the x- and y-coordinates of point click…