public static void Wrap(AnimatedParameter animParam, Environment env)
{
var wrapper = new ExpressionParameterWrapper(animParam);
env.AddVariable("parameter", wrapper, wrapper.GetType());
env.AddVariable(animParam.parameterName, wrapper, wrapper.GetType());
// env.AddVariable( new BoundVariable("value", animParam.ResolvedObject(), animParam.GetMemberInfo()) );
}
///Compile an expression within target environment
public static void CompileExpression(string scriptExpression, Environment environment, AnimatedParameter animParam, out Exception compileException, out Expression compiledExpression)
{
compiledExpression = null;
compileException = null;
if (string.IsNullOrEmpty(scriptExpression))
{
return;
}
var expectedType = animParam.animatedType;
try
{
compiledExpression = StagPoint.Eval.EvalEngine.Compile(scriptExpression, environment);
if (compiledExpression.Type == typeof(void))
{
throw new System.Exception(string.Format("Expression must return a value of type '{0}'", expectedType.FriendlyName()));
}
var value = compiledExpression.Execute();
if (value is object[])
{
var arr = (value as object[]).Cast <float>().ToArray();
var requiredLength = animParam.parameterModel.RequiredCurvesCount();
if (arr.Length != requiredLength)
{
throw new System.Exception(string.Format("Result Expression Array returns '{0}' values, but '{1}' values are required.", arr.Length, requiredLength));
}
}
else
{
var valueType = value.GetType();
if (!expectedType.RTIsAssignableFrom(valueType))
{
throw new System.Exception(string.Format("Result Expression Type is '{0}', but '{1}' is required.", valueType.FriendlyName(), expectedType.FriendlyName()));
}
}
}
catch (System.Exception exc)
{
compileException = exc;
compiledExpression = null;
}
}
public ExpressionParameterWrapper(AnimatedParameter animParam)
{
this.animParam = animParam;
}