bool ready = false; // Flag for allowing sliders, etc., to influence display.
public Window1()
{
InitializeComponent();
InitializeCommands();
// Now add some graphical items in the main Canvas, whose name is "GraphPaper"
gp = this.FindName("Paper") as GraphPaper;
// Build a table of vertices:
const int nPoints = 8;
const int nEdges = 12;
double[,] vtable = new double[nPoints, 3]
{
{ -0.5, -0.5, 2.5 },
{ -0.5, 0.5, 2.5 },
{ 0.5, 0.5, 2.5 },
{ 0.5, -0.5, 2.5 },
{ -0.5, -0.5, 3.5 },
{ -0.5, 0.5, 3.5 },
{ 0.5, 0.5, 3.5 },
{ 0.5, -0.5, 3.5 }
};
// Build a table of edges
int[,] etable = new int[nEdges, 2] {
{ 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 0 }, // one face
{ 0, 4 }, { 1, 5 }, { 2, 6 }, { 3, 7 }, // joining edges
{ 4, 5 }, { 5, 6 }, { 6, 7 }, { 7, 4 }
}; // opposite face
double xmin = -0.5;
double xmax = 0.5;
double ymin = -0.5;
double ymax = 0.5;
Point[] pictureVertices = new Point[nPoints];
double scale = 100;
for (int i = 0; i < nPoints; i++)
{
double x = vtable[i, 0];
double y = vtable[i, 1];
double z = vtable[i, 2];
double xprime = x / z;
double yprime = y / z;
pictureVertices[i].X = scale * (1 - (xprime - xmin) / (xmax - xmin));
pictureVertices[i].Y = scale * (yprime - ymin) / (ymax - ymin); // x / z
gp.Children.Add(new Dot(pictureVertices[i].X, pictureVertices[i].Y));
}
for (int i = 0; i < nEdges; i++)
{
int n1 = etable[i, 0];
int n2 = etable[i, 1];
gp.Children.Add(new Segment(pictureVertices[n1], pictureVertices[n2]));
}
ready = true; // Now we're ready to have sliders and buttons influence the display.
}
// Code to create and display objects goes here.
public Window1()
{
InitializeComponent();
InitializeCommands();
// Now add some graphical items in the main drawing area, whose name is "Paper"
gp = this.FindName("Paper") as GraphPaper;
// Track mouse activity in this window
MouseLeftButtonDown += MyMouseButtonDown;
MouseLeftButtonUp += MyMouseButtonUp;
MouseMove += MyMouseMove;
#region Triangles, segments, dots
// A triangle, whose top point can be moved using the slider.
myTriangle = new Polygon();
myTriangle.Points.Add(new Point(0, 10));
myTriangle.Points.Add(new Point(10, 0));
myTriangle.Points.Add(new Point(-10, 0));
myTriangle.Stroke = Brushes.Black;
myTriangle.StrokeThickness = 1; // 1 mm thick line
myTriangle.Fill = Brushes.LightSeaGreen;
gp.Children.Add(myTriangle);
// A draggable Dot, which is the basepoint of an arrow.
Dot dd = new Dot(new Point(-40, 60));
dd.MakeDraggable(gp);
gp.Children.Add(dd);
Arrow ee = new Arrow(dd, new Point(10, 10), Arrow.endtype.END);
gp.Children.Add(ee);
// a dot and a segment that's attached to it; the dot is animated
Dot p1 = new Dot(new Point(20, 20));
gp.Children.Add(p1);
Point p2 = new Point(50, 50);
Segment mySegment = new Segment(p1, p2);
gp.Children.Add(mySegment);
PointAnimation animaPoint1 = new PointAnimation(
new Point(-20, -20),
new Point(-40, 20),
new Duration(new TimeSpan(0, 0, 5)));
animaPoint1.AutoReverse = true;
animaPoint1.RepeatBehavior = RepeatBehavior.Forever;
p1.BeginAnimation(Dot.PositionProperty, animaPoint1);
#endregion
#region Images
// And a photo from a file, then another that's
// created on-the-fly instead of read from a file.
myImage1 = new GImage("./foo.jpg");
myImage1.Width = GraphPaper.wpf(200);
myImage1.Position = new Point(10, 40);
Point pq = new Point(10, 40);
gp.Children.Add(myImage1);
// Now add a second image, based on first building an array of color values
// Create source array
byte[, ,] stripes = createStripeImageArray();
myImage2 = new GImage(stripes);
// Establish the width and height for this image on the GraphPaper
myImage2.Width = GraphPaper.wpf(128);
myImage2.Height = GraphPaper.wpf(128);
myImage2.Position = new Point(-40, 20);
gp.Children.Add(myImage2);
#endregion
#region Mesh, Quiver, and Text labels
myMesh = this.createSampleMesh();
gp.Children.Add(myMesh);
Text myText = new Text("THIS IS TEXT");
myText.Position = new Point(20, 50);
gp.Children.Add(myText);
myQuiver = makeQuiver();
foreach (Shape q in myQuiver)
{
gp.Children.Add(q);
}
#endregion
ready = true; // Now we're ready to have sliders and buttons influence the display.
}