public ShapeFrameIdPair RetrieveShapeForFrame(uint shapeId, int frameId)
{
ShapeFrameIdPair shapePairToReturn = null;
ShapeIterations iterations = null;
if (ShapeData.TryGetValue(shapeId, out iterations))
{
// find the most recent shape that was used for this frame id
for (int i = 0; i < iterations.Iterations.Count; ++i)
{
if (iterations.Iterations[i].FrameId == frameId)
{
shapePairToReturn = iterations.Iterations[i];
break;
}
else if (iterations.Iterations[i].FrameId < frameId)
{
shapePairToReturn = iterations.Iterations[i];
}
else
{
// the frame is now higher than the target frame id so we should've found it by now as the list is sorted!
break;
}
}
}
return(shapePairToReturn);
}
public ShapeFrameIdPair AddNewShape(int frameId, BaseShape addedShape)
{
ShapeIterations iterations = new ShapeIterations();
ShapeFrameIdPair newPair = new ShapeFrameIdPair(frameId, addedShape);
iterations.Iterations.Add(newPair);
iterations.Iterations.Sort();
ShapeData.Add(addedShape.Id, iterations);
return(newPair);
}