Shapes!

gistfile1.txt

namespace MyGame
{
	/// <summary>
	/// The drawing class helps to manage shapes on a canvas.
	/// There are helper methods like AddShape, SelectShapeAtPoint etc.
	/// The drawing class can also draw all of the shapes that it contains. 
	/// </summary>
	public class Drawing
	{
		/// <summary>
		/// Initializes a new instance of the <see cref="MyGame.Drawing"/> class.
		/// </summary>
		public Drawing()
		{
			shapes = new List<Shape>();
		}

		private List<Shape> shapes;
		/// <summary>
		/// Gets the shapes that belong to the drawing.
		/// </summary>
		/// <value>
		/// The shapes.
		/// </value>
		public List<Shape> Shapes {
			get {
				return shapes;
			}
		}

		private Shape selectedShape;
		/// <summary>
		/// Gets the selected shape.
		/// </summary>
		/// <value>
		/// The selected shape.
		/// </value>
		public Shape SelectedShape {
			get {
				return selectedShape;
			}
		}
		/// <summary>
		/// Adds the shape.
		/// </summary>
		/// <param name='s'>
		/// S.
		/// </param>
		public void AddShape(Shape s)
		{
			shapes.Add(s);
		}
		/// <summary>
		/// Selects the shape at the given point.
		/// </summary>
		/// <param name='point'>
		/// Point.
		/// </param>
		public void SelectShapeAtPoint (Point2D point)
		{
			foreach (Shape s in Shapes) {
				if (s.IsAt(point))
				{
					selectedShape = s;
				}
				return;
			}
		}
		/// <summary>
		/// Draw the collection of shapes.
		/// </summary>
		public void Draw ()
		{
			foreach (Shape s in Shapes) {
				s.Draw();
			}
		}
	}

	/// <summary>
	/// The shape class is used to represent a generic shape and its properties. 
	/// It has properties that all shapes have in common.
	/// </summary>
    public class Shape
    {
        private Color color;
        private Point2D position;
        private int width;
        private int height;
 
		/// <summary>
		/// Initializes a new instance of the <see cref="MyGame.Shape"/> class.
		/// </summary>
        public Shape ()
        {
            width = height = 0;
        }
 
		/// <summary>
		/// Gets or sets the color, used for the colour of the shape.
		/// </summary>
		/// <value>
		/// The color.
		/// </value>
        public Color Color
        {
            get { return color; }
            set { color = value; }
        }
        
		/// <summary>
		/// Gets or sets the position.
		/// Used for the position on the screen of the shape.
		/// </summary>
		/// <value>
		/// The position.
		/// </value>
        public Point2D Position
        {
            get { return position; }
            set { position = value; }
        }
        
		/// <summary>
		/// Gets or sets the width.
		/// This sets the width of the shape.
		/// </summary>
		/// <value>
		/// The width.
		/// </value>
        public int Width
        {
            get { return width; }
            set { width = value; }
        }
        

		/// <summary>
		/// Gets or sets the height.
		/// This controls the height of the shape. 
		/// </summary>
		/// <value>
		/// The height.
		/// </value>
        public int Height
        {
            get { return height; }
            set { height = value; }
        }
 
		/// <summary>
		/// Determines whether this instance is at the specified point.
		/// </summary>
		/// <returns>
		/// <c>true</c> if this instance is at the specified point; otherwise, <c>false</c>.
		/// </returns>
		/// <param name='point'>
		/// If set to <c>true</c> point.
		/// </param>
        public bool IsAt(Point2D point)
        {
            return point.X >= Position.X && 
                point.X <= Position.X + Width &&
                point.Y >= Position.Y &&
                point.Y <= Position.Y + Height;
        }
        /// <summary>
        /// Draw this instance.
        /// </summary>
        public void Draw()
        {
            Graphics.FillRectangle(Color, Position.X, Position.Y, Width, Height);
        }
    }
}