AnimationDeveloperSamples.MapGraphicKeyframe.RecreateLineGeometry C# (CSharp) Method

        private void RecreateLineGeometry(IElement elem, IAGAnimationTrack pTrack, IAGKeyframe pKeyframe, IPoint new_pos)
        {
            IGeometry newGeometry = new PolylineClass();
            IPointCollection newPointCol = (IPointCollection)newGeometry;

            IAGAnimationTrackKeyframes trackKeyframes = (IAGAnimationTrackKeyframes)pTrack;
            int tCount = trackKeyframes.KeyframeCount;
            object missing = Type.Missing;
            for (int i = 0; i < tCount; i++)
            {
                IAGKeyframe tempKeyframe = trackKeyframes.get_Keyframe(i);
                newPointCol.AddPoint((IPoint)tempKeyframe.get_PropertyValue(0), ref missing, ref missing);
                if ((IPoint)tempKeyframe.get_PropertyValue(0) == (IPoint)pKeyframe.get_PropertyValue(0))
                    break;
            }
            if (new_pos != null)
                newPointCol.AddPoint(new_pos, ref missing, ref missing);

            elem.Geometry = newGeometry;
        }