/// <summary>
/// Draws the specified shape by the specified color.
/// </summary>
/// <param name="verticesShape">The shape to draw.</param>
/// <param name="color">The color of the shape.</param>
/// <param name="z">The z coordinate of the shape.</param>
public void Draw(ShapeBasedOnVertices verticesShape, Color color, float z)
{
if (verticesShape.Vertices.Count < 2)
{
return;
}
while (verticesShape.Vertices.Count > lineVertices.Length)
{
ExtendBuffer();
}
if (lineVerticesCount >= 2)
{
DrawLines();
}
for (int i = 0; i < verticesShape.Vertices.Count; ++i)
{
lineVertices[i].Position = new Vector3(verticesShape.Vertices[i], z);
lineVertices[i].Color = color;
}
if (verticesShape.Type == Shape.ShapeType.Polygon)
{
lineVertices[verticesShape.Vertices.Count] = lineVertices[0];
}
lineVerticesCount = verticesShape.Type == Shape.ShapeType.Polygon ? verticesShape.Vertices.Count : verticesShape.Vertices.Count - 1;
ApplyBasicEffect();
GraphicsDevice.DrawUserPrimitives(PrimitiveType.LineStrip, lineVertices, 0, lineVerticesCount);
lineVerticesCount = 0;
}
/// <summary>
/// Updates the shape that represents the path.
/// </summary>
public void Invalidate()
{
if (Path.Loop)
{
pathShape = new Polygon(new FarseerPhysics.Common.Vertices(Path.Vertices));
}
else
{
pathShape = new Edge(new FarseerPhysics.Common.Vertices(Path.Vertices));
}
if (Path.Vertices.Count != 0)
{
Position = Path.Vertices[0];
}
UpdateRectangle();
}
