public static List <PointDirection3> Tesselate(IFace2[] faceList, ITessellation tess)
{
var r = new List <PointDirection3>();
// performance improvement
// ReSharper disable once ForCanBeConvertedToForeach
for (int index = 0; index < faceList.Length; index++)
{
var face = faceList[index];
foreach (var facet in tess.GetFaceFacets(face).CastArray <int>())
{
var finIds = tess.GetFacetFins(facet).CastArray <int>();
var vertexIds = finIds
.SelectMany(finId => tess.GetFinVertices(finId).CastArray <int>())
.DistinctUntilChanged()
.SkipLast(1)
.ToList();
var vertexs = vertexIds
.Select(vId => tess.GetVertexPoint(vId).CastArray <double>())
.ToList();
var normals = vertexIds
.Select(vId => tess.GetVertexNormal(vId).CastArray <double>())
.ToList();
// Unroll loop for performance
r.Add(new PointDirection3(vertexs[0].ToVector3D(), normals[0].ToVector3D()));
r.Add(new PointDirection3(vertexs[1].ToVector3D(), normals[1].ToVector3D()));
r.Add(new PointDirection3(vertexs[2].ToVector3D(), normals[2].ToVector3D()));
}
}
return(r);
}
private static List <int> GetEdgePolyline(ITessellation tessellation, object edge)
{
var fins = (int[])tessellation.GetEdgeFins(edge);
var finVertices = new Dictionary <int, List <int> >();
int minOpenVertex = -1;
int minVertex = int.MaxValue;
foreach (var fin in fins)
{
var finEnds = (int[])tessellation.GetFinVertices(fin);
var min = Math.Min(finEnds[0], finEnds[1]);
var max = Math.Max(finEnds[0], finEnds[1]);
if (min < minVertex)
{
minVertex = min;
}
List <int> list;
if (!finVertices.TryGetValue(min, out list))
{
list = new List <int> {
max
};
finVertices[min] = list;
if (minOpenVertex == -1 || minOpenVertex > min)
{
minOpenVertex = min;
}
}
else
{
list.Add(max);
if (minOpenVertex == min)
{
minOpenVertex = -1;
}
}
if (!finVertices.TryGetValue(max, out list))
{
list = new List <int> {
min
};
finVertices[max] = list;
if (minOpenVertex == -1 || minOpenVertex > max)
{
minOpenVertex = max;
}
}
else
{
list.Add(min);
if (minOpenVertex == max)
{
minOpenVertex = -1;
}
}
}
var polyline = new List <int>();
var visited = new HashSet <int>();
var startVertex = minOpenVertex == -1 ? minVertex : minOpenVertex;
while (visited.Count < finVertices.Count && startVertex != -1)
{
polyline.Add(startVertex);
visited.Add(startVertex);
var next = finVertices[startVertex];
startVertex = -1;
for (var i = 0; i < next.Count; i++)
{
if (!visited.Contains(next[i]))
{
startVertex = next[i];
}
}
}
if (minOpenVertex == -1)
{
polyline.Add(polyline[0]);
}
return(polyline);
}
private static BodyTessellation GetBodyMesh(IBody2 body, IPartDoc partDoc, ITessellation tessellation, long?overrideColor)
{
var bodyTessellation = new BodyTessellation();
if (overrideColor.HasValue)
{
bodyTessellation.FaceColors.Add(overrideColor.Value);
}
else
{
double[] bodyColorArray = null;
var features = (object[])body.GetFeatures();
if (features != null)
{
foreach (IFeature feature in features.Reverse())
{
bodyColorArray =
(double[])feature.GetMaterialPropertyValues2(
(int)swInConfigurationOpts_e.swThisConfiguration, null);
if (bodyColorArray[0] == -1
) // All -1s are returned by features that don't assign color.
{
bodyColorArray = null;
}
if (bodyColorArray != null)
{
break;
}
}
}
if (bodyColorArray == null)
{
bodyColorArray = (double[])body.MaterialPropertyValues2;
}
if (bodyColorArray == null)
{
bodyColorArray = (double[])partDoc.MaterialPropertyValues;
}
var bodyColor = ColorArrayToColor(bodyColorArray);
bodyTessellation.FaceColors.Add(bodyColor);
}
var coloredFaces = new Dictionary <IFace2, long>();
var faceCount = 0;
foreach (IFace2 face in (object[])body.GetFaces())
{
faceCount++;
var colorArray = (double[])face.MaterialPropertyValues;
if (colorArray != null)
{
coloredFaces[face] = ColorArrayToColor(colorArray);
}
}
if (coloredFaces.Count < faceCount)
{
for (var i = 0; i < tessellation.GetVertexCount(); i++)
{
bodyTessellation.VertexPositions.Add((double[])tessellation.GetVertexPoint(i));
bodyTessellation.VertexNormals.Add((double[])tessellation.GetVertexNormal(i));
}
foreach (IFace2 face in (object[])body.GetFaces())
{
if (coloredFaces.ContainsKey(face))
{
continue;
}
foreach (var facet in (int[])tessellation.GetFaceFacets(face))
{
var vertexIndices = new List <int>();
foreach (var fin in (int[])tessellation.GetFacetFins(facet))
{
vertexIndices.Add(((int[])tessellation.GetFinVertices(fin))[0]);
}
bodyTessellation.Faces.Add(new FaceStruct {
Color = 0,
Vertex1 = vertexIndices[0],
Vertex2 = vertexIndices[1],
Vertex3 = vertexIndices[2],
});
}
}
}
foreach (var pair in coloredFaces)
{
var colorIndex = bodyTessellation.FaceColors.IndexOf(pair.Value);
if (colorIndex == -1)
{
bodyTessellation.FaceColors.Add(pair.Value);
colorIndex = bodyTessellation.FaceColors.Count - 1;
}
foreach (var facet in (int[])tessellation.GetFaceFacets(pair.Key))
{
var vertexIndices = new List <int>();
foreach (var fin in (int[])tessellation.GetFacetFins(facet))
{
vertexIndices.Add(((int[])tessellation.GetFinVertices(fin))[0]);
}
bodyTessellation.Faces.Add(
new FaceStruct {
Color = colorIndex,
Vertex1 = bodyTessellation.VertexPositions.Count,
Vertex2 = bodyTessellation.VertexPositions.Count + 1,
Vertex3 = bodyTessellation.VertexPositions.Count + 2
});
bodyTessellation.VertexPositions.Add(
(double[])tessellation.GetVertexPoint(vertexIndices[0]));
bodyTessellation.VertexPositions.Add(
(double[])tessellation.GetVertexPoint(vertexIndices[1]));
bodyTessellation.VertexPositions.Add(
(double[])tessellation.GetVertexPoint(vertexIndices[2]));
bodyTessellation.VertexNormals.Add(
(double[])tessellation.GetVertexNormal(vertexIndices[0]));
bodyTessellation.VertexNormals.Add(
(double[])tessellation.GetVertexNormal(vertexIndices[1]));
bodyTessellation.VertexNormals.Add(
(double[])tessellation.GetVertexNormal(vertexIndices[2]));
}
}
return(bodyTessellation);
}