/// <summary>
/// Transform a given transformations and return the result matrix.
/// </summary>
/// <param name="trans">Transformations to transform.</param>
/// <returns>Matrix with combined transformations.</returns>
public Matrix Transform(Transformations trans)
{
// build matrix for given transformations
Matrix transMatrix = trans.BuildMatrix();
// get our world transformations
Matrix worldMatrix = WorldTransformations;
// combine and return
return(transMatrix * worldMatrix);
}
/// <summary>
/// Transform a given transformations and return the result matrix.
/// </summary>
/// <param name="trans">Transformations to transform.</param>
/// <returns>Matrix with combined transformations.</returns>
public Matrix Transform(Transformations trans)
{
// build matrix for given transformations
Matrix transMatrix = trans.BuildMatrix();
// get our world transformations
Matrix worldMatrix = WorldTransformations;
// count the event
Utils.CountAndAlert.Count(Utils.CountAndAlert.PredefAlertTypes.ForceUpdate);
// combine and return
return(transMatrix * worldMatrix);
}
/// <summary>
/// Calc final transformations for current frame.
/// This uses an indicator to know if an update is needed, so no harm is done if you call it multiple times.
/// </summary>
protected virtual void DoTransformationsUpdateIfNeeded()
{
// if use external transformations, skip
if (UseExternalTransformations)
{
_isDirty = false;
return;
}
// if local transformations are dirty, or parent transformations are out-of-date, update world transformations
if (_isDirty || WasParentUpdate)
{
// if local transformations are dirty, we need to update local transforms
if (_isDirty)
{
_localTransform = Transformations.BuildMatrix();
}
// if we got parent, apply its transformations
if (Parent != null)
{
_worldTransform = _localTransform * Parent._worldTransform;
_parentLastTransformVersion = Parent._transformVersion;
}
// if not, world transformations are the same as local, and reset parent last transformations version
else
{
_worldTransform = _localTransform;
_parentLastTransformVersion = 0;
}
// no longer dirty
_isDirty = false;
// called the function that mark world matrix change (increase transformation version etc)
OnWorldMatrixChange();
}
}
/// <summary>
/// Build matrix from node transformations.
/// </summary>
public Matrix BuildTransformationsMatrix()
{
return(Transformations.BuildMatrix());
}