/// <summary>
/// Provides the surface of this function if it has been statically defined
/// </summary>
/// <param name="context">the context used to create the surface</param>
/// <param name="xParam">The X axis of this surface</param>
/// <param name="yParam">The Y axis of this surface</param>
/// <returns>The surface which corresponds to this expression</returns>
public override Functions.Surface createSurface(Interpreter.InterpretationContext context, Parameter xParam, Parameter yParam)
{
Functions.Surface retVal = base.createSurface(context, xParam, yParam);
if (Term != null)
{
retVal = Functions.Surface.createSurface(xParam, yParam, GetValue(context));
}
else if (Expression != null)
{
if (UnaryOp == null)
{
retVal = Expression.createSurface(context, xParam, yParam);
}
else
{
if (UnaryOp == MINUS)
{
retVal = Expression.createSurface(context, xParam, yParam);
retVal.Negate();
}
else
{
AddError("Cannot create surface with unary op " + UnaryOp);
}
}
}
retVal.XParameter = xParam;
retVal.YParameter = yParam;
return(retVal);
}
/// <summary>
/// Provides the surface of this function if it has been statically defined
/// </summary>
/// <param name="context">the context used to create the surface</param>
/// <param name="xParam">The X axis of this surface</param>
/// <param name="yParam">The Y axis of this surface</param>
/// <returns>The surface which corresponds to this expression</returns>
public override Functions.Surface createSurface(Interpreter.InterpretationContext context, Parameter xParam, Parameter yParam)
{
Functions.Surface retVal = base.createSurface(context, xParam, yParam);
Functions.Function function = getFunction(context);
Functions.PredefinedFunctions.Cast cast = Called.Ref as Functions.PredefinedFunctions.Cast;
if (cast != null)
{
// In case of cast, just take the surface of the enclosed expression
Expression actual = (Expression)ActualParameters[0];
retVal = actual.createSurface(context, xParam, yParam);
}
else
{
Parameter Xaxis = null;
Parameter Yaxis = null;
if (function == null)
{
function = Called.getCalled(context) as Function;
}
SelectXandYAxis(context, xParam, yParam, function, out Xaxis, out Yaxis);
if (Xaxis != null || Yaxis != null)
{
int token = context.LocalScope.PushContext();
function.AssignParameters(context, AssignParameterValues(context, function, true));
retVal = function.createSurfaceForParameters(context, Xaxis, Yaxis);
context.LocalScope.PopContext(token);
}
else
{
Values.IValue value = GetValue(context);
if (value != null)
{
retVal = Functions.Surface.createSurface(value, xParam, yParam);
}
else
{
throw new Exception("Cannot create surface for expression");
}
}
}
retVal.XParameter = xParam;
retVal.YParameter = yParam;
return(retVal);
}
/// <summary>
/// Creates the graph for the unbount parameters provided
/// </summary>
/// <param name="context"></param>
/// <param name="expression"></param>
/// <param name="function"></param>
/// <param name="unbound"></param>
/// <returns></returns>
private Surface createSurfaceForUnbound(InterpretationContext context, Expression expression, Function function, List <Parameter> unbound)
{
Surface retVal = null;
if (unbound.Count == 0)
{
if (function != null)
{
Parameter xAxis = null;
if (function.FormalParameters.Count > 0)
{
xAxis = (Parameter)function.FormalParameters[0];
}
Parameter yAxis = null;
if (function.FormalParameters.Count > 1)
{
yAxis = (Parameter)function.FormalParameters[1];
}
retVal = function.createSurfaceForParameters(context, xAxis, yAxis);
}
else
{
retVal = Surface.createSurface(expression.GetValue(context), null, null);
}
}
else if (unbound.Count == 1)
{
Graph graph = createGraphForUnbound(context, expression, function, unbound);
retVal = Surface.createSurface(graph.Function, unbound[0], null);
}
else
{
if (function == null)
{
retVal = expression.createSurface(context, unbound[0], unbound[1]);
}
else
{
retVal = function.createSurfaceForParameters(context, unbound[0], unbound[1]);
}
}
return(retVal);
}
/// <summary>
/// Provides the surface of this function if it has been statically defined
/// </summary>
/// <param name="context">the context used to create the surface</param>
/// <param name="xParam">The X axis of this surface</param>
/// <param name="yParam">The Y axis of this surface</param>
/// <returns>The surface which corresponds to this expression</returns>
public override Functions.Surface createSurface(Interpreter.InterpretationContext context, Parameter xParam, Parameter yParam)
{
Functions.Surface retVal = base.createSurface(context, xParam, yParam);
if (xParam == null || yParam == null)
{
AddError("Cannot have null parameters for Function expression " + ToString());
}
else
{
int token = context.LocalScope.PushContext();
Parameter xAxis = Parameters[0];
Parameter yAxis = Parameters[1];
context.LocalScope.setSurfaceParameters(xAxis, yAxis);
retVal = Expression.createSurface(context, xAxis, yAxis);
context.LocalScope.PopContext(token);
}
retVal.XParameter = xParam;
retVal.YParameter = yParam;
return(retVal);
}
/// <summary>
/// Creates the graph for the unbount parameters provided
/// </summary>
/// <param name="context"></param>
/// <param name="expression"></param>
/// <param name="function"></param>
/// <param name="unbound"></param>
/// <returns></returns>
private Surface createSurfaceForUnbound(InterpretationContext context, Expression expression, Function function, List<Parameter> unbound)
{
Surface retVal = null;
if (unbound.Count == 0)
{
if (function != null)
{
Parameter xAxis = null;
if (function.FormalParameters.Count > 0)
{
xAxis = (Parameter)function.FormalParameters[0];
}
Parameter yAxis = null;
if (function.FormalParameters.Count > 1)
{
yAxis = (Parameter)function.FormalParameters[1];
}
retVal = function.createSurfaceForParameters(context, xAxis, yAxis);
}
else
{
retVal = Surface.createSurface(expression.GetValue(context), null, null);
}
}
else if (unbound.Count == 1)
{
Graph graph = createGraphForUnbound(context, expression, function, unbound);
retVal = Surface.createSurface(graph.Function, unbound[0], null);
}
else
{
if (function == null)
{
retVal = expression.createSurface(context, unbound[0], unbound[1]);
}
else
{
retVal = function.createSurfaceForParameters(context, unbound[0], unbound[1]);
}
}
return retVal;
}