public PlotPoint RotateAround(float degrees, PlotPoint center)
{
double sin = Math.Sin(degrees * Math.PI / 180f);
double cos = Math.Cos(degrees * Math.PI / 180f);
double tx = this.X - center.X;
double ty = this.Y - center.Y;
double vX = ((cos * tx) - (sin * ty)) + center.X;
double vY = ((sin * tx) + (cos * ty)) + center.Y;
return(new PlotPoint((float)vX, (float)vY));
}
public static PlotPoint[] BuildRandom(
float xmean, float xdeviation,
float ymean, float ydeviation,
float angle, int count
)
{
PlotPoint[] out_data = new PlotPoint[count];
for (int i = 0; i < count; i++)
{
float xval = NextFloat() * xdeviation + xmean;
float yval = NextFloat() * ydeviation + ymean;
out_data[i] = new PlotPoint(xval, yval).RotateAround(angle, new PlotPoint(xmean, ymean));
}
return(out_data);
}