/// <summary>
/// Gets the revit parameter from project info
/// </summary>
/// <param name="parameterName">name of the parameter</param>
/// <returns>parameter or null if not found</returns>
private Parameter GetParameterFromProjectInfo(string parameterName)
{
Element pInfo = _doc.ProjectInformation;
if (null == pInfo)
{
return(null);
}
ParameterMap theParamMap = pInfo.ParametersMap;
if (!theParamMap.Contains(parameterName))
{
return(null);
}
return(theParamMap.get_Item(parameterName));
}
public static Parameter GetParameterByDefinitionName(ParameterMap parameterMap, string name)
{
if (parameterMap == null)
{
Log.WriteLine("Element.ParametersMap is null");
return(null);
}
Parameter result = null;
if (parameterMap.Contains(name))
{
try
{
result = parameterMap.get_Item(name);
}
catch (System.Exception value)
{
Log.WriteLine("ParmeterMap contains the key, but can't get it");
Log.WriteLine(value);
}
}
return(result);
}
void DragParameter(Moment now, ParameterMap other, Parameter p, float value)
{
// We have a tiny gutter around 0, since some effects have a sharp step from 0 to anything else and
// this sounds more jarring if it happens with no tolerance.
if (value < 0.1f) {
value = 0;
}
// We deliberately use SSA-like structure here to be able to see all the intermediate values in the debugger.
// First, get the endpoint value of p
float pValue = p[now.Time];
// Next, get the base value of p, in normalized terms
ParameterDescription pDesc = p.Description;
float pBaseValueNormalized = pDesc.Min == pDesc.Max ? pDesc.Base : (pDesc.Base - pDesc.Min) / (pDesc.Max - pDesc.Min);
// Now we want to move from pBaseValueNormalized towards pValue, by an amount proportional to dragValue
float newDestValue = pBaseValueNormalized + ((pValue - pBaseValueNormalized) * value);
Parameter dest = m_parameters[p.Description];
if (m_baseParameters.Contains(p.Description)) {
float baseValue = m_baseParameters[p.Description][now.Time];
float averagedDestValue = newDestValue;
if (other != null && other.Contains(p.Description)) {
averagedDestValue = (averagedDestValue + other[p.Description][now.Time]) / 2;
}
float adjustedDestValue = averagedDestValue;
if (!p.Description.Absolute) {
// only grow upwards from the base value, proportionately to how big the base value already is
adjustedDestValue = baseValue + (averagedDestValue * (1 - baseValue));
}
Spam.Model.WriteLine("parameter " + p.Description.Name + ": pValue " + pValue + ", pBVN " + pBaseValueNormalized + ", baseValue " + baseValue + ", adjustedDestValue " + adjustedDestValue);
// clamp to [0, 1] because we may overshoot a bit with this algorithm
dest[now.Time] = Math.Max(0, Math.Min(1f, adjustedDestValue));
}
}
