I'm trying to understand UnitPoint so I can set the startPoint and endPoint of a color linear Gradient with a number, like a CGFloat or a percent instead of the Property Type options I find in the documentation (.leading, .trailing, etc.). Note the code below builds for me:

 Rectangle()
                .fill(LinearGradient(gradient: Gradient(colors: [color1, color2]), startPoint: .top, endPoint: .bottom))

BUT I want to replace .top with an x, y coordinate, for example, like: startPoint: (x: 0,y: 0) I've tried percents, CGFloats, etc.

BTW, if anyone knows of a great tutorial or class to learn how to read the Documentation pages please share (gosh darn how I wish they always included sample code on these pages).