public override void Recalculate()
{
//Recalculate the vector values
rot.Recalculate();
trans.Recalculate();
origin.Recalculate();
color.Recalculate();
//Transform geometry matrix
vertecies.SetFromMatrix(originalGeo);
vertecies.Translate(origin.values);
vertecies.Scale(scale.Evaluate());
vertecies.Rotate(rot.values);
vertecies.Translate(position[0], position[1], position[2]);
vertecies.Translate(trans.values);
//vertecies = new _geo.ToColumnWiseArray();
//Transform color matrix
//MatrixD _col;
//_col = MatrixD.TranslateMatrix(color.values, col);
//Set values
//vertexColor = _col.ToColumnWiseArray();
}
/// <summary>
/// Returns an array of points representing a graph in polar coordinates
/// </summary>
/// <param name="expression">What to graph</param>
/// <param name="start">Theta value to begin at</param>
/// <param name="stop">Theta value to end at</param>
/// <param name="step">Theta resolution</param>
/// <returns></returns>
public static double[,] GraphPolar(ExpressionD expression, double start, double stop, double step)
{
if (start >= stop || step <= 0)
{
throw new Exception("Cannot graph polar, invalid arguments");
}
double[,] result;
ArrayList points = new ArrayList();
//Perform calculations
ExpressionD.AddSymbol("i", 0);
int index = 0;
double theta;
for (double i = start; i < stop; i += step)
{
ExpressionD.SetSymbolValue("i", i * Math.PI / 180.0);
theta = i * Math.PI / 180.0;
points.Add(new Point3(
expression.Evaluate() * Math.Sin(theta),
expression.Evaluate() * Math.Cos(theta),
0
));
index++;
}
ExpressionD.RemoveSymbol("i");
//Convert
result = new double[3, points.Count];
int count = 0;
foreach (Point3 p in points)
{
result[0, count] = p.x;
result[1, count] = p.y;
result[2, count] = p.z;
count++;
}
return(result);
}
