PurplePen.MapDisplay.GetMapColors C# (CSharp) Method

        public List<SymColor> GetMapColors()
        {
            if (mapType == MapType.OCAD && map != null) {
                using (map.Read())
                    return new List<SymColor>(map.AllColors);
            }
            else
                return new List<SymColor>();
        }

        // Get the purple color to use for display, taking into account the user preferences in courseAppearance, the map loaded into the mapDisplay, 
        // and the default purple if none of those provide a color. MapDisplay and courseAppearance can be null, in which case they won't be used.
        public static void GetPurpleColor(MapDisplay mapDisplay, CourseAppearance courseAppearance, out short ocadId, out float cyan, out float magenta, out float yellow, out float black, out bool overprint)
        {
            overprint = (courseAppearance == null) ? true : courseAppearance.purpleColorBlend;

            if (courseAppearance != null && !courseAppearance.useDefaultPurple) {
                // Use the purple from the course display.
                cyan = courseAppearance.purpleC;
                magenta = courseAppearance.purpleM;
                yellow = courseAppearance.purpleY;
                black = courseAppearance.purpleK;
                ocadId = NormalCourseAppearance.courseOcadId;
                return;
            }
            else if (mapDisplay != null && FindPurpleColor(mapDisplay.GetMapColors(), out ocadId, out cyan, out magenta, out yellow, out black)) {
                // FindPurpleColor found a purple to use.
                return;
            }
            else {
                // Use the program default.
                ocadId = NormalCourseAppearance.courseOcadId;
                cyan = NormalCourseAppearance.courseColorC;
                magenta = NormalCourseAppearance.courseColorM;
                yellow = NormalCourseAppearance.courseColorY;
                black = NormalCourseAppearance.courseColorK;
                return;
            }
        }