UIImage DrawShape(ShapeType shapeType, CGSize size, UIColor strokeColor, UIColor fillColor)
{
float width = (float)size.Width;
float height = (float)size.Height;
var stroke = 1;
var scale = (width / 2) - (stroke * 2);
var center = new Vector2(width / 2, height / 2);
UIImage starImage;
UIGraphics.BeginImageContext(new CGSize(width, height));
using (CGContext g = UIGraphics.GetCurrentContext())
{
g.SetLineWidth(stroke);
FillColor.ToUIColor().SetFill();
StrokeColor.ToUIColor().SetStroke();
var shapePoints = new Vector2[0];
switch (shapeType)
{
case ShapeType.Oval:
var radiusX = (width / 3) - stroke;
var radiusY = (height / 2) - stroke;
g.AddEllipseInRect(new CGRect(0, 0, radiusX * 2, radiusY * 2));
break;
case ShapeType.Circle:
var radius = Math.Min(width, height) / 2 - stroke;
g.AddEllipseInRect(new CGRect(0, 0, radius * 2, radius * 2));
break;
case ShapeType.Line:
shapePoints = CreateLineGeometry(scale, center);
break;
case ShapeType.Hexagon:
shapePoints = CreateHexagonGeometry(scale, center);
break;
case ShapeType.Rectangle:
shapePoints = CreateRectangleGeometry(scale, center);
break;
case ShapeType.Square:
shapePoints = CreateSquareGeometry(scale, center);
break;
case ShapeType.Trapezoid:
shapePoints = CreateTrapezoidGeometry(scale, center);
break;
case ShapeType.Triangle:
shapePoints = CreateTriangleGeometry(scale, center);
break;
case ShapeType.Star:
shapePoints = CreateStarGeometry(scale, center);
break;
default:
break;
}
if (shapePoints.Count() > 0)
{
var points = new List <CGPoint>();
foreach (var item in shapePoints)
{
points.Add(new CGPoint(item.X, item.Y));
}
var path = new CGPath();
path.AddLines(points.ToArray());
path.CloseSubpath();
g.AddPath(path);
}
g.DrawPath(CGPathDrawingMode.FillStroke);
starImage = UIGraphics.GetImageFromCurrentImageContext();
}
return(starImage);
}