public Environment(IFunctionEval functionEval, IDictionary <string, float> variables)
{
Variables = variables;
FunctionEval = functionEval;
}
public void Evaluate(int SpreadMax)
{
if (this.FPinInTerm.PinIsChanged || this.FInvalidate)
{
this.FAssembly = null;
string term;
this.FPinInTerm.GetString(0, out term);
term = term == null ? String.Empty : term;
CSharpCodeProvider csp = new CSharpCodeProvider();
ICodeCompiler cc = csp.CreateCompiler();
#region Build Code
CompilerParameters cp = new CompilerParameters();
cp.ReferencedAssemblies.Add("System.dll");
cp.ReferencedAssemblies.Add("System.Data.dll");
cp.ReferencedAssemblies.Add("System.Xml.dll");
cp.ReferencedAssemblies.Add("mscorlib.dll");
cp.ReferencedAssemblies.Add(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + "\\AdvExpr.dll");
cp.GenerateInMemory = true;
cp.GenerateExecutable = false;
cp.CompilerOptions = "/optimize";
//Header
StringBuilder sb = new StringBuilder();
sb.AppendLine("using System;");
sb.AppendLine("using System.Collections.Generic;");
sb.AppendLine("namespace VVVV.Lib");
sb.AppendLine("{");
sb.AppendLine("public class Evaluator : IFunctionEval");
sb.AppendLine("{");
sb.AppendLine("public double Eval(double[] values)");
sb.AppendLine("{");
for (int i = 0; i < this.FVarNames.Count; i++)
{
sb.AppendLine("double " + this.FVarNames[i] + " =values[" + i.ToString() + "];");
}
sb.AppendLine(term);
//Footer
sb.AppendLine("}");
sb.AppendLine("}");
sb.AppendLine("}");
#endregion
string code = sb.ToString();
CompilerResults cr = cc.CompileAssemblyFromSource(cp, code);
if (cr.Errors.Count > 0)
{
this.FValid = false;
string err = "";
foreach (CompilerError ce in cr.Errors)
{
err += ce.ErrorNumber + ":" + ce.ErrorText + "\n";
}
this.FPinOutError.SetString(0, err);
}
else
{
this.FValid = true;
this.FAssembly = cr.CompiledAssembly;
this.FPinOutError.SetString(0, "");
foreach (Type t in this.FAssembly.GetTypes())
{
if (typeof(IFunctionEval).IsAssignableFrom(t))
{
object o = Activator.CreateInstance(t);
this.FFormula = o as IFunctionEval;
}
}
}
this.FPinOutCode.SetString(0, code);
this.FInvalidate = false;
}
this.FPinOutput.SliceCount = SpreadMax;
if (this.FValid)
{
double *dbloutput;
this.FPinOutput.GetValuePointer(out dbloutput);
double[] vals = new double[this.FPinInVariables.Count];
List <IntPtr> pointers = new List <IntPtr>();
List <int> ptrcount = new List <int>();
for (int j = 0; j < this.FPinInVariables.Count; j++)
{
double *ptr;
int cnt;
this.FPinInVariables[j].GetValuePointer(out cnt, out ptr);
pointers.Add(new IntPtr(ptr));
ptrcount.Add(cnt);
}
for (int i = 0; i < SpreadMax; i++)
{
for (int j = 0; j < this.FPinInVariables.Count; j++)
{
vals[j] = ((double *)pointers[j])[i % ptrcount[j]];
}
dbloutput[i] = this.FFormula.Eval(vals);
}
}
else
{
for (int i = 0; i < SpreadMax; i++)
{
this.FPinOutput.SetValue(i, 0);
}
}
}
public void RegisterFunction(IFunctionEval func)
{
Functions.Add(func);
}
