public double getArea()
{
double[,] array = new double[2, 2];
array[0, 0] = point1.getX() - point3.getX();
array[0, 1] = point1.getY() - point3.getY();
array[1, 0] = point2.getX() - point3.getX();
array[1, 1] = point2.getY() - point3.getY();
return(Abs((array[0, 0] * array[1, 1]) - (array[0, 1] * array[1, 0])) / 2);;
}
public void shiftX(double value)
{
point1.shiftX(value);
point2.shiftX(value);
point3.shiftX(value);
point4.shiftX(value);
if ((point1.getX() < 0 || point1.getX() > 500) || (point2.getX() < 0 || point2.getX() > 500) || (point3.getX() < 0 || point3.getX() > 500) || (point4.getX() < 0 || point4.getX() > 500))
{
point1.shiftX(-value);
point2.shiftX(-value);
point3.shiftX(-value);
point4.shiftX(-value);
}
}
private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
double shiftvalue = SliderX.Value;
if (rectangle != null)
{
shiftvalue -= rectangle.Left;
rectangle.shiftX(shiftvalue);
MainCanvas.Children.Clear();
drawRectangle(rectangle);
showRectangleInfo(rectangle);
}
if (triangle != null)
{
shiftvalue -= triangle.Left;
triangle.shiftX(shiftvalue);
MainCanvas.Children.Clear();
drawTriangle(triangle);
showTriangleInfo(triangle);
}
if (point != null)
{
shiftvalue -= point.getTrueX();
point.shiftX(shiftvalue);
MainCanvas.Children.Clear();
drawPoint(point);
pointX.Text = "X: " + point.getX().ToString("0.00");
}
}
public bool equals(Point2D OtherPoint)
{
if ((x == OtherPoint.getX()) && y == OtherPoint.getY())
{
return(true);
}
else
{
return(false);
}
}
private void drawLine(Point2D beginPoint, Point2D endPoint)
{
Line line = new Line();
line.Stroke = Brushes.DarkBlue;
line.X1 = beginPoint.getX();
line.Y1 = beginPoint.getY();
line.X2 = endPoint.getX();
line.Y2 = endPoint.getY();
MainCanvas.Children.Add(line);
}
private void drawPoint(Point2D point)
{
Ellipse boldPoint = new Ellipse();
boldPoint.Width = 4;
boldPoint.Height = 4;
boldPoint.StrokeThickness = 2;
boldPoint.Stroke = Brushes.Black;
boldPoint.Margin = new Thickness(point.getX() - 2, point.getY() - 2, 0, 0);
MainCanvas.Children.Add(boldPoint);
}
private void Point2DBt_Click(object sender, RoutedEventArgs e)
{
pointInfo.Visibility = Visibility.Visible;
triangleInfo.Visibility = Visibility.Hidden;
rectangleInfo.Visibility = Visibility.Hidden;
rectangleOptions.Visibility = Visibility.Hidden;
MainCanvas.Children.Clear();
rectangle = null;
triangle = null;
point = Generate.initPoint2D();
drawPoint(point);
pointX.Text = "X: " + point.getX().ToString("0.00");
pointY.Text = "Y: " + point.getY().ToString("0.00");
SliderX.Maximum = 500;
SliderX.Value = point.getX();
SliderY.Maximum = 300;
SliderY.Value = point.getY();
}
private void Point2DBt_Click(object sender, RoutedEventArgs e)
{
pointInfo.Visibility = Visibility.Visible;
triangleInfo.Visibility = Visibility.Hidden;
rectangleInfo.Visibility = Visibility.Hidden;
rectangleOptions.Visibility = Visibility.Hidden;
MainCanvas.Children.Clear();
this.point = Generate.initPoint2D();
this.rectangle = null;
this.triangle = null;
drawPoint(this.point);
pointX.Text = "X: " + point.getX().ToString("#.##");
pointY.Text = "Y: " + point.getY().ToString("#.##");
}
public double getDistance(Point2D OtherPoint)
{
double distance = Sqrt(Pow((x - OtherPoint.getX()), 2) + Pow((y - OtherPoint.getY()), 2));
return(distance);
}
private void Window_KeyUp(object sender, KeyEventArgs e)
{
if (this.point != null)
{
if (e.Key == Key.Up)
{
this.point.shiftY(-10);
}
if (e.Key == Key.Down)
{
this.point.shiftY(10);
}
if (e.Key == Key.Right)
{
this.point.shiftX(10);
}
if (e.Key == Key.Left)
{
this.point.shiftX(-10);
}
MainCanvas.Children.Clear();
drawPoint(this.point);
pointX.Text = "X: " + point.getX().ToString("#.##");
pointY.Text = "Y: " + point.getY().ToString("#.##");
}
if (this.triangle != null)
{
MainCanvas.Children.Clear();
if (e.Key == Key.Up)
{
this.triangle.shiftY(-10);
}
if (e.Key == Key.Down)
{
this.triangle.shiftY(10);
}
if (e.Key == Key.Right)
{
this.triangle.shiftX(10);
}
if (e.Key == Key.Left)
{
this.triangle.shiftX(-10);
}
drawTriangle(this.triangle);
}
if (this.rectangle != null)
{
MainCanvas.Children.Clear();
if (e.Key == Key.Up)
{
this.rectangle.shiftY(-10);
}
if (e.Key == Key.Down)
{
this.rectangle.shiftY(10);
}
if (e.Key == Key.Right)
{
this.rectangle.shiftX(10);
}
if (e.Key == Key.Left)
{
this.rectangle.shiftX(-10);
}
drawRectangle(this.rectangle);
}
}