private void tvList_AfterSelect(object sender, TreeViewEventArgs e)
{
DrawingContext context = new DrawingContext(graphics);
using (Pen pen = new Pen(Color.Blue, lineWidth))
{
context.Pen = pen;
if (e.Node.Nodes.Count > 0)
{//存在子项
pen.Color = Color.Green;
Cursor.Current = Cursors.WaitCursor;
foreach (TreeNode node in e.Node.Nodes)
{
IDrawing drawing = node.Tag as IDrawing;
if (drawing != null)
{
drawing.Draw(context);
}
Thread.Sleep(250);
}
Cursor.Current = Cursors.Default;
}
else
{
IDrawing drawing = e.Node.Tag as IDrawing;
if (drawing != null)
{
drawing.Draw(context);
}
}
}
}
private CanvasRenderTarget GetDrawings()
{
CanvasDevice device = CanvasDevice.GetSharedDevice();
CanvasRenderTarget target = new CanvasRenderTarget(device, (float)_canvasControl.ActualWidth, (float)_canvasControl.ActualHeight, 96);
using (CanvasDrawingSession graphics = target.CreateDrawingSession())
{
graphics.Clear(Colors.Transparent);
if (_bitmap != null)
{
graphics.DrawImage(_bitmap, GetBitmapRect());
}
if (_strokes != null && _strokes.Any())
{
var list = _strokes.ToList();
list.Reverse();
list.ForEach((d) => { d.Draw(graphics); });
}
if (_currentStroke != null)
{
_currentStroke.Draw(graphics);
}
}
return(target);
}
// Listing 15.15 Creating composed drawing
public static IDrawing Compose(this IDrawing img1, IDrawing img2)
{
// Create composed drawing
return(new Drawing(g => {
img1.Draw(g);
img2.Draw(g);
}
));
}
// Listing 15.14 Translating drawings
// Extension method
public static IDrawing Translate(this IDrawing img, float x, float y)
{
// Return translated 'Drawing' object
return(new Drawing(g => {
g.TranslateTransform(x, y);
img.Draw(g);
g.TranslateTransform(-x, -y);
}
));
}
public void DrawTexturedQuad(IDrawStage drawStage,
CoordinateSpace space,
ITexture texture,
Colour colour,
Vector2 position,
float width,
float height,
float depth,
int layer = 0,
float rotation_clockwise_radians = 0.0f,
float texcoord_min_x = 0.0f,
float texcoord_min_y = 0.0f,
float texcoord_max_x = 1.0f,
float texcoord_max_y = 1.0f,
TextureCoordinateMode textureMode = TextureCoordinateMode.Wrap)
{
var halfSize = 0.5f * new Vector2(width, height);
_drawing.Draw(drawStage,
space,
FillType.Textured,
new Vertex2D[]
{
new Vertex2D {
Position = Common.RotateVectorClockwise(new Vector2(-halfSize.X, halfSize.Y), rotation_clockwise_radians) + position, TexCoord0 = new Vector2(texcoord_min_x, texcoord_min_y), TexCoord1 = new Vector2(0.0f, 0.0f), TexWeighting = 0.0f, Colour = new Colour(1.0f, 1.0f, 1.0f, 1.0f)
},
new Vertex2D {
Position = Common.RotateVectorClockwise(new Vector2(halfSize.X, halfSize.Y), rotation_clockwise_radians) + position, TexCoord0 = new Vector2(texcoord_max_x, texcoord_min_y), TexCoord1 = new Vector2(1.0f, 0.0f), TexWeighting = 1.0f, Colour = new Colour(1.0f, 1.0f, 1.0f, 1.0f)
},
new Vertex2D {
Position = Common.RotateVectorClockwise(new Vector2(-halfSize.X, -halfSize.Y), rotation_clockwise_radians) + position, TexCoord0 = new Vector2(texcoord_min_x, texcoord_max_y), TexCoord1 = new Vector2(0.0f, 1.0f), TexWeighting = 0.0f, Colour = new Colour(1.0f, 1.0f, 1.0f, 1.0f)
},
new Vertex2D {
Position = Common.RotateVectorClockwise(new Vector2(halfSize.X, -halfSize.Y), rotation_clockwise_radians) + position, TexCoord0 = new Vector2(texcoord_max_x, texcoord_max_y), TexCoord1 = new Vector2(1.0f, 1.0f), TexWeighting = 1.0f, Colour = new Colour(1.0f, 1.0f, 1.0f, 1.0f)
},
},
new int[]
{
0, 1, 2, 2, 1, 3
},
colour,
texture,
null,
textureMode,
TextureCoordinateMode.None,
depth,
layer);
}
private static void ApplicationTickEventHandler(object sender, TickEventArgs args)
{
m_elapsed += args.SecondsElapsed;
Video.WindowCaption = string.Format("ChaosGame2d [FPS: {0} | Elapsed: {1} | Points: {2}]", args.Fps, m_elapsed, m_drawing.NumberOfPoints);
if (m_elapsed > m_step)
{
m_drawing.Update();
m_drawing.Draw();
m_video.Update();
m_elapsed -= m_step;
}
}
//Usage (Vertex2Ds are created and vertices are finally positioned. Previously all relative to single position point to enable transforms)
public void SubmitDraw(IDrawStage drawStage, CoordinateSpace space, float depth, int layer)
{
_drawing.Draw(drawStage,
space,
_fill,
CreateVerticesInFinalPosition(),
_indices,
_colour,
_texture0.Texture,
_texture1.Texture,
_texture0.TextureMode,
_texture1.TextureMode,
depth,
layer);
}
private void DrawTimer()
{
if (!needDrawing)
{
return;
}
timer.Enabled = false;
drawing.Draw(bitmap);
Graphics g = Graphics.FromImage(bitmap);
Posteffect(g);
g.Dispose();
pictureBox.Image = bitmap;
needDrawing = false;
timer.Enabled = true;
}
static void Main(string[] args)
{
try
{
int width = -1;
int height = -1;
char c = ' ';
char[][] matrix = null;
while (true)
{
Console.Write(Constants.EnterCommandMessage);
string[] command = Console.ReadLine().Split(new[] { " " }, StringSplitOptions.RemoveEmptyEntries);
List <Point> list = new List <Point>();
if (!ProcessCommand(command, list, ref matrix, ref width, ref height, ref c))
{
IDrawingFactory df = new DrawingFactory.DrawingFactory();
IDrawing drawing = null;
drawing = df.CreateObject(command[0].ToUpper());
drawing.Draw(matrix, list, c);
Utilities.Utilities.Paint(matrix);
}
Console.WriteLine();
}
}
catch (Exception ex)
{
Console.WriteLine(Constants.ExceptionMessageToUser);
File.AppendAllText("ErrorMessages.txt", Environment.NewLine + DateTime.Now +
Environment.NewLine + ex.Message + Environment.NewLine
+ ex.StackTrace + Environment.NewLine);
Console.WriteLine(Constants.ExitMessageWhileException);
}
finally
{
Console.Read();
}
}