public Polygon MakePolygon(List <int> pointIndices)
{
Polygon polygon = MakePolygon();
/* Sanity check */
for (int i = 0; i < pointIndices.Count; ++i)
{
for (int j = 0; j < pointIndices.Count; ++j)
{
if (i == j)
{
continue;
}
if (pointIndices[i] == pointIndices[j])
{
throw new System.Exception("duplicate polygon corner point indices");
}
}
}
foreach (int pointIndex in pointIndices)
{
Point point = Points[pointIndex];
polygon.MakeCorner(point);
}
#if DEBUG_CHECK
var pointLocations = PointAttributes.Find <Vector3>("point_locations");
if (polygon.DebugCheck(pointLocations) == false)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = pointIndices.Length - 1; i >= 0; --i)
{
sb.Append(pointIndices[i].ToString());
if (i > 0)
{
sb.Append(", ");
}
}
Logger.Log(sb.ToString() + ");");
}
else
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < pointIndices.Length; i++)
{
sb.Append(pointIndices[i].ToString());
if (i < pointIndices.Length - 1)
{
sb.Append(", ");
}
}
Logger.Log(sb.ToString() + ");");
}
#endif
return(polygon);
}
/// Compute polygon centroids based on point position attributes
/// Results are stored in internally stored attribute map named "polygon_centroids".
public void ComputePolygonCentroids()
{
var polygonCentroids = PolygonAttributes.FindOrCreate <Vector3>("polygon_centroids");
var pointLocations = PointAttributes.Find <Vector3>("point_locations");
polygonCentroids.Clear();
foreach (Polygon polygon in Polygons)
{
polygon.ComputeCentroid(polygonCentroids, pointLocations);
}
}
/// Compute polygon normals based on point position attributes.
/// Results are stored in internally stored attribute map named "polygon_normals".
public void ComputePolygonNormals()
{
var polygonNormals = PolygonAttributes.FindOrCreate <Vector3>("polygon_normals");
var pointLocations = PointAttributes.Find <Vector3>("point_locations");
polygonNormals.Clear();
foreach (Polygon polygon in Polygons)
{
polygon.ComputeNormal(polygonNormals, pointLocations);
}
}
public Corner ClosestPolygonCorner(Polygon polygon, Vector3 position)
{
Corner closestCorner = null;
float closestDistanceSquared = float.MaxValue;
var pointLocations = PointAttributes.Find <Vector3>("point_locations");
foreach (Corner corner in polygon.Corners)
{
Vector3 cornerLocation = pointLocations[corner.Point];
float distanceSquared = cornerLocation.DistanceSquared(position);
if (distanceSquared < closestDistanceSquared)
{
closestDistanceSquared = distanceSquared;
closestCorner = corner;
}
}
return(closestCorner);
}
/// \brief Construct a new Polygon from a given set of Point indices
/// \param pointIndices Indices to Points that are connected to the new Polygon</param>
/// \return Newly created Polygon
public Polygon MakePolygon(params int[] pointIndices)
{
Polygon polygon = MakePolygon();
foreach (int pointIndex in pointIndices)
{
Point point = Points[pointIndex];
polygon.MakeCorner(point);
}
#if DEBUG_CHECK
var pointLocations = PointAttributes.Find <Vector3>("point_locations");
if (polygon.DebugCheck(pointLocations) == false)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = pointIndices.Length - 1; i >= 0; --i)
{
sb.Append(pointIndices[i].ToString());
if (i > 0)
{
sb.Append(", ");
}
}
Logger.Log(sb.ToString() + ");");
}
else
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
for (int i = 0; i < pointIndices.Length; i++)
{
sb.Append(pointIndices[i].ToString());
if (i < pointIndices.Length - 1)
{
sb.Append(", ");
}
}
Logger.Log(sb.ToString() + ");");
}
#endif
return(polygon);
}
public void SmoothAverage(
string cornerAttribute,
string pointNormalName
)
{
var cornerAttributes = CornerAttributes.FindOrCreate <Vector4>(cornerAttribute);
var cornerNormals = CornerAttributes.FindOrCreate <Vector3>("corner_normals");
var pointNormals = PointAttributes.Find <Vector3>(pointNormalName);
var newCornerAttributes = CornerAttributes.FindOrCreate <Vector4>("temp");
foreach (Polygon polygon in Polygons)
{
polygon.SmoothAverage(
newCornerAttributes,
cornerAttributes,
cornerNormals,
pointNormals
);
}
CornerAttributes.Replace(cornerAttribute, "temp");
}