public Shape(ShapeType shapeType, Color color, Rectangle bounds)
{
FigureType = shapeType;
Color = color;
switch (shapeType)
{
case ShapeType.DrawRect:
case ShapeType.FillRect:
case ShapeType.DrawLine:
Points = bounds.ToPolygon();
break;
case ShapeType.FillEllipse:
case ShapeType.DrawEllipse:
Points = new EllipseBuilder().BuildEllipse(bounds);
break;
case ShapeType.DrawPolygon:
case ShapeType.FillPolygon:
Random rnd = new Random();
var pointCount = rnd.Next(3, 13);
var size = bounds.Width / 2;
var innerSize = size * (0.2 + rnd.NextDouble() * 0.5);
var angle = rnd.NextDouble() * 2 * Math.PI;
Points = new StarBuilder().BuildStar(pointCount, size, innerSize, bounds.CenterPoint, angle);
break;
}
}
private void DrawForrestPaths()
{
Canvas.Children.Clear();
foreach (var crossroad in GlobalForestPaths.GetCrossroads())
{
BuildDirector ellipseDirector = new BuildDirector();
EllipseBuilder ellipseBuilder = ellipseDirector.BuildEllipse(crossroad);
Ellipse ellipse = ellipseBuilder.GetEllipse();
Canvas.SetLeft(ellipse, crossroad.Position.X - ellipse.Height / 2);
Canvas.SetTop(ellipse, crossroad.Position.Y - ellipse.Width / 2);
Canvas.SetZIndex(ellipse, 2);
Canvas.Children.Add(ellipse);
foreach (var eges in GlobalForestPaths.GetNextCrossroads(crossroad))
{
BuildDirector lineDirector = new BuildDirector();
LineBuilder lineBuilder = lineDirector.BuildLine(GlobalForestPaths, crossroad.Key, eges.Key);
Line line = lineBuilder.GetLine();
string[] lineName = line.Name.Split('_');
if (FindChildByName($"{lineName[1]}_{lineName[0]}") == null)
{
Canvas.SetZIndex(line, 1);
Canvas.Children.Add(line);
}
}
}
}
public void Execute()
{
key = forestPaths.AddCrossroad(crossroad);
BuildDirector director = new BuildDirector();
EllipseBuilder builder = director.BuildEllipse(crossroad);
Ellipse ellipse = builder.GetEllipse();
Canvas.SetLeft(ellipse, crossroad.Position.X - ellipse.Height / 2);
Canvas.SetTop(ellipse, crossroad.Position.Y - ellipse.Width / 2);
Canvas.SetZIndex(ellipse, 2);
canvas.Children.Add(ellipse);
}
public void GB_BuildCircle()
{
var builder = new EllipseBuilder();
const int radius = 4;
var points = builder.BuildCircle(Vector2.Zero, radius);
foreach (var point in points)
{
point.Length().Should().BeApproximately(radius, 0.00001f,
$"Point {point} should be at radius {radius} but instead was at {point.Length()}");
}
}
public void GB_BuildEllipseAxisAligned()
{
var builder = new EllipseBuilder();
const int majorAxis = 8;
const int minorAxis = 4;
var points = builder.BuildEllipse(Vector2.Zero, majorAxis, minorAxis, 0);
foreach (var point in points)
{
// Equation for an ellipse:
// (x/a)^2 + (y/b)^2 = 1
var norm = Vector2.UnitX * point.X / majorAxis + Vector2.UnitY * point.Y / minorAxis;
norm.LengthSquared().Should().BeApproximately(1, 0.00001f,
$"Point {point} does not satisfy the ellipse equation.");
}
}
public void GB_BuildEllipseBoundingBox()
{
var builder = new EllipseBuilder();
const int majorAxis = 8;
const int minorAxis = 4;
Rectangle boundingBox = new Rectangle(-majorAxis, -minorAxis, majorAxis * 2, minorAxis * 2);
var points = builder.BuildEllipse((RectangleF)boundingBox);
foreach (var point in points)
{
// Equation for an ellipse:
// (x/a)^2 + (y/b)^2 = 1
var norm = Vector2.UnitX * point.X / majorAxis + Vector2.UnitY * point.Y / minorAxis;
norm.LengthSquared().Should().BeApproximately(1, 0.00001f,
$"Point {point} does not satisfy the ellipse equation.");
}
}
