/// <summary>
/// Draws an unfilled polygon.
/// </summary>
/// <param name="primitives"></param>
/// <param name="color"></param>
/// <param name="polygon"></param>
public static void DrawPolygon(this IPrimitiveRenderer primitives, Effect effect, Color color, Polygon polygon)
{
primitives.DrawLines(effect, LineType.Polygon, color, polygon.Points);
}
/// <summary>
/// Draws the outline of an ellipse, inscribed inside a rectangle.
/// </summary>
/// <param name="primitives"></param>
/// <param name="color"></param>
/// <param name="boundingRect">The rectangle the circle should be inscribed in.</param>
public static void DrawEllipse(this IPrimitiveRenderer primitives, Effect effect, Color color, RectangleF boundingRect)
{
primitives.DrawLines(effect, LineType.Polygon, color,
new EllipseBuilder().BuildEllipse(boundingRect));
}
/// <summary>
/// Draws a line between the two points specified.
/// </summary>
/// <param name="primitives"></param>
/// <param name="color"></param>
/// <param name="a"></param>
/// <param name="b"></param>
public static void DrawLine(this IPrimitiveRenderer primitives, Effect effect, Color color, Vector2 a, Vector2 b)
{
primitives.DrawLines(effect, LineType.LineSegments, color, new[] { a, b });
}
/// <summary>
/// Draws the outline of a rectangle.
/// </summary>
/// <param name="primitives"></param>
/// <param name="color"></param>
/// <param name="rect"></param>
public static void DrawRect(this IPrimitiveRenderer primitives, Effect effect, Color color, RectangleF rect)
{
primitives.DrawLines(effect, LineType.Polygon, color,
new QuadrilateralBuilder().BuildRectangle(rect));
}
/// <summary>
/// Draws a set of lines. The lineType parameter controls how
/// lines are connected.
/// </summary>
/// <param name="lineType">The type of lines to draw.</param>
/// <param name="color">The color of lines to draw.</param>
/// <param name="points">The points that are used to
/// build the individual line segments.</param>
public static void DrawLines(this IPrimitiveRenderer primitives, Effect effect, LineType lineType, Color color,
IEnumerable <Vector2> points)
{
primitives.DrawLines(effect, lineType, color, points);
}