public static void smethod_22(WW.Cad.Drawing.Surface.Geometry geometry, IList <WW.Math.Point3D> boundary)
{
if (boundary.Count == 0)
{
return;
}
if (boundary.Count == 1)
{
geometry.Add((IPrimitive) new WW.Cad.Drawing.Surface.Point(boundary[0]));
}
else if (boundary.Count == 2)
{
geometry.Add((IPrimitive) new WW.Cad.Drawing.Surface.Segment(boundary[0], boundary[1]));
}
else if (boundary.Count == 3)
{
geometry.Add((IPrimitive) new WW.Cad.Drawing.Surface.Triangle(boundary[0], boundary[1], boundary[2]));
}
else if (boundary.Count == 4)
{
geometry.Add((IPrimitive) new Quad(boundary[0], boundary[1], boundary[2], boundary[3]));
}
else
{
int count = boundary.Count;
Polygon3D polygon3D = new Polygon3D(count);
for (int index = 0; index < count; ++index)
{
polygon3D.Add(boundary[index]);
}
Plane3D?plane = polygon3D.GetPlane();
if (!plane.HasValue)
{
return;
}
Matrix4D matrix4D = Transformation4D.Translation(plane.Value.Distance * plane.Value.Normal) * Transformation4D.GetArbitraryCoordSystem(plane.Value.Normal);
Matrix4D inverse = matrix4D.GetInverse();
Polygon2D projection2D = polygon3D.GetProjection2D(inverse);
List <Triangulator2D.Triangle> triangleList = new List <Triangulator2D.Triangle>();
List <WW.Math.Point2D> point2DList = new List <WW.Math.Point2D>();
Triangulator2D.Triangulate((IList <IList <WW.Math.Point2D> >) new Polygon2D[1]
{
projection2D
}, (IList <Triangulator2D.Triangle>)triangleList, (IList <WW.Math.Point2D>)point2DList);
foreach (Triangulator2D.Triangle triangle in triangleList)
{
geometry.Add((IPrimitive) new WW.Cad.Drawing.Surface.Triangle(matrix4D.TransformTo3D(point2DList[triangle.I0]), matrix4D.TransformTo3D(point2DList[triangle.I1]), matrix4D.TransformTo3D(point2DList[triangle.I2])));
}
}
}
public static void smethod_20(
DxfEntity entity,
DrawContext.Surface context,
ISurfaceGraphicsFactory graphicsFactory,
Polyline4D boundary,
List <bool> edgeVisibleList)
{
if (boundary.Count == 0)
{
return;
}
if (boundary.Count == 1)
{
graphicsFactory.CreatePoint(boundary[0]);
}
else if (boundary.Count == 2)
{
bool flag = true;
if (edgeVisibleList.Count != 0 && !edgeVisibleList[0])
{
flag = false;
}
if (!flag)
{
return;
}
graphicsFactory.CreateSegment(boundary[0], boundary[1]);
}
else if (boundary.Count == 3)
{
bool[] flagArray = (bool[])null;
if (edgeVisibleList != null)
{
flagArray = edgeVisibleList.ToArray();
}
graphicsFactory.CreateTriangle(boundary[0], boundary[1], boundary[2], (IList <bool>)flagArray);
}
else if (boundary.Count == 4)
{
bool[] flagArray = (bool[])null;
if (edgeVisibleList != null)
{
flagArray = edgeVisibleList.ToArray();
}
graphicsFactory.CreateQuad((IList <Vector4D>)boundary.ToArray(), (IList <bool>)flagArray);
}
else
{
int count = boundary.Count;
Polygon3D polygon3D = new Polygon3D(count);
for (int index = 0; index < count; ++index)
{
polygon3D.Add((WW.Math.Point3D)boundary[index]);
}
Plane3D?plane = polygon3D.GetPlane();
if (!plane.HasValue)
{
return;
}
Matrix4D matrix4D = Transformation4D.Translation(plane.Value.Distance * plane.Value.Normal) * Transformation4D.GetArbitraryCoordSystem(plane.Value.Normal);
Matrix4D inverse = matrix4D.GetInverse();
Polygon2D projection2D = polygon3D.GetProjection2D(inverse);
List <Triangulator2D.Triangle> triangleList = new List <Triangulator2D.Triangle>();
List <WW.Math.Point2D> point2DList = new List <WW.Math.Point2D>();
Triangulator2D.Triangulate((IList <IList <WW.Math.Point2D> >) new Polygon2D[1]
{
projection2D
}, (IList <Triangulator2D.Triangle>)triangleList, (IList <WW.Math.Point2D>)point2DList);
foreach (Triangulator2D.Triangle triangle in triangleList)
{
graphicsFactory.CreateTriangle(matrix4D.TransformTo4D(point2DList[triangle.I0]), matrix4D.TransformTo4D(point2DList[triangle.I1]), matrix4D.TransformTo4D(point2DList[triangle.I2]), (IList <bool>)null);
}
}
}
public static Point3D?GetCentroid(IList <Point3D> polygon, out Plane3D?plane)
{
int count = polygon.Count;
Point3D point3D1 = polygon[0];
if (count < 3)
{
plane = new Plane3D?();
switch (count)
{
case 0:
return(new Point3D?());
case 1:
return(new Point3D?(polygon[0]));
case 2:
Point3D point3D2 = polygon[0];
return(new Point3D?(new Point3D(0.5 * (point3D1.X + point3D2.X), 0.5 * (point3D1.Y + point3D2.Y), 0.5 * (point3D1.Z + point3D2.Z))));
}
}
plane = Polygon3D.GetPlane(polygon);
if (!plane.HasValue)
{
return(new Point3D?());
}
Matrix4D matrix4D = Transformation4D.Translation(point3D1.X, point3D1.Y, point3D1.Z) * Transformation4D.GetArbitraryCoordSystem(plane.Value.Normal);
Matrix4D inverse = matrix4D.GetInverse();
Point2D point2D = Polygon3D.GetProjection2D(polygon, inverse).GetCentroid().Value;
return(new Point3D?(matrix4D.Transform(new Point3D(point2D.X, point2D.Y, 0.0))));
}
