/// <summary>
/// This method creates an outline collection.
/// </summary>
/// <param name="formattedData"> This parameter references the formatted input sink. </param>
/// <param name="geometryCache"> This parameter references the text geometry cache. </param>
/// <param name="clusterBidiLevels"> This parameter references the cluster bidi levels. </param>
/// <returns> This method returns a new outline collection containing an outline for each formatted cluster. </returns>
private static OutlineCollection CreateOutlineList(
FormatterSink formattedData, TextGeometryCache geometryCache, out byte[] clusterBidiLevels)
{
_OutlineListBuilder.Clear();
clusterBidiLevels = new byte[formattedData.Clusters.Count];
int geometryClusterIndex = 0;
for(int i = 0; i < formattedData.Runs.Count; ++i)
{
FormattedRun run = formattedData.Runs[i];
FontFace face = run.Font.ResolveFace();
float emSize = face.Metrics.Ascent + face.Metrics.Descent;
float baseline = face.Metrics.Ascent / emSize;
foreach(int clusterIndex in run.Clusters)
{
Geometry geometry = geometryCache.Retrieve(
clusterIndex, run.BidiLevel, run.Font, formattedData);
_OutlineListBuilder.Add(new Outline(geometry, run.EmSize, baseline));
clusterBidiLevels[geometryClusterIndex] = run.BidiLevel;
geometryClusterIndex++;
}
}
return new OutlineCollection(_OutlineListBuilder);
}
