public Surface(VectorFunction r)
{
this.r = r;
List<CommonFunction> components = r.components;
List<DefinedCommonFunction> derivativesU = new List<DefinedCommonFunction>();
List<DefinedCommonFunction> derivativesV = new List<DefinedCommonFunction>();
NumericalDerivative derivative = new NumericalDerivative();
derivativesU.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[0].getCommonFunction(), 0, 1)));
derivativesV.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[0].getCommonFunction(), 1, 1)));
derivativesU.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[1].getCommonFunction(), 0, 1)));
derivativesV.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[1].getCommonFunction(), 1, 1)));
derivativesU.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[2].getCommonFunction(), 0, 1)));
derivativesV.Add(new DefinedCommonFunction(derivative.CreatePartialDerivativeFunctionHandle(components[2].getCommonFunction(), 1, 1)));
VectorFunction v1 = new VectorFunction(derivativesU);
VectorFunction v2 = new VectorFunction(derivativesV);
VectorFunction normalLength = new Vector3Mul(v1, v2);
CommonFunction length = new Length(normalLength);
List<bool> normalPow = new List<bool>();
normalPow.Add(true); normalPow.Add(false);
List<CommonFunction> normalx = new List<CommonFunction>();
normalx.Add(normalLength.components[0]); normalx.Add(length);
List<CommonFunction> normaly = new List<CommonFunction>();
normaly.Add(normalLength.components[1]); normaly.Add(length);
List<CommonFunction> normalz = new List<CommonFunction>();
normalz.Add(normalLength.components[2]); normalz.Add(length);
List<CommonFunction> normalCoordinates = new List<CommonFunction>();
normalCoordinates.Add(new Mul(normalx, normalPow));
normalCoordinates.Add(new Mul(normaly, normalPow));
normalCoordinates.Add(new Mul(normalz, normalPow));
normal = new VectorFunction(normalCoordinates);
}
public Length(VectorFunction arg)
{
this.arg = arg;
}