public void draw(double xCenter, double yCenter, double Radius, double startAngle, double endAngle, string Tag)
{
double
xStart = xCenter + Radius * Math.Cos(Draw.DegToRad(startAngle)),
yStart = yCenter + Radius * Math.Sin(-Draw.DegToRad(startAngle));
bool changeAngle = true;
while (changeAngle)
{
if (startAngle < endAngle)
{
for (double i = startAngle; i <= endAngle; i++)
{
Calculate(xCenter, yCenter, ref xStart, ref yStart, Radius, i);
}
changeAngle = false;
}
else
{
for (double i = startAngle; i >= endAngle && i <= 360; i++)
{
Calculate(xCenter, yCenter, ref xStart, ref yStart, Radius, i);
}
startAngle = 0;
}
}
}
private void Calculate(double xCenter, double yCenter, ref double xStart, ref double yStart, double Radius, double i)
{
double
x = xCenter + Radius * Math.Cos(Draw.DegToRad(i)),
y = yCenter + Radius * Math.Sin(-Draw.DegToRad(i));
Line.Draw(xStart, yStart, x, y, 3, "Black", "Drawing");
xStart = x;
yStart = y;
}
private void Rotate(double x0, double y0, double degree)
{
double x1, y1, x2, y2;
degree = -degree;
y0 = height - y0;
foreach (Line line in canvas.Children)
{
if (line.Tag.ToString() == "Drawing")
{
x1 = line.X1;
y1 = line.Y1;
x2 = line.X2;
y2 = line.Y2;
line.X1 = x0 + (x1 - x0) * Math.Cos(Draw.DegToRad(degree)) - (y1 - y0) * Math.Sin(Draw.DegToRad(degree));
line.Y1 = y0 + (x1 - x0) * Math.Sin(Draw.DegToRad(degree)) + (y1 - y0) * Math.Cos(Draw.DegToRad(degree));
line.X2 = x0 + (x2 - x0) * Math.Cos(Draw.DegToRad(degree)) - (y2 - y0) * Math.Sin(Draw.DegToRad(degree));
line.Y2 = y0 + (x2 - x0) * Math.Sin(Draw.DegToRad(degree)) + (y2 - y0) * Math.Cos(Draw.DegToRad(degree));
}
}
}