public static IEnumerable <Line3D> CreateWiredCylinder(BoundingCylinder cylinder, int segments)
{
List <Line3D> resultList = new List <Line3D>();
var verts = cylinder.GetVertices(segments);
for (int i = 0; i < segments; i++)
{
if (i == segments - 1)
{
resultList.Add(new Line3D(verts[i], verts[0]));
resultList.Add(new Line3D(verts[i + segments], verts[0 + segments]));
resultList.Add(new Line3D(verts[i], verts[i + segments]));
}
else
{
resultList.Add(new Line3D(verts[i], verts[i + 1]));
resultList.Add(new Line3D(verts[i + segments], verts[i + 1 + segments]));
resultList.Add(new Line3D(verts[i], verts[i + segments]));
}
}
return(resultList);
}
/// <summary>
/// Generate a triangle list from cylinder
/// </summary>
/// <param name="topology">Topology</param>
/// <param name="cylinder">Cylinder</param>
/// <param name="segments">Number of segments</param>
/// <returns>Returns the triangle list</returns>
public static IEnumerable <Triangle> ComputeTriangleList(Topology topology, BoundingCylinder cylinder, int segments)
{
List <Triangle> triangleList = new List <Triangle>();
if (topology == Topology.TriangleList)
{
var verts = cylinder.GetVertices(segments);
for (int i = 0; i < segments - 2; i++)
{
triangleList.Add(new Triangle(verts[0], verts[i + 2], verts[i + 1]));
triangleList.Add(new Triangle(verts[0 + segments], verts[i + 1 + segments], verts[i + 2 + segments]));
}
for (int i = 0; i < segments; i++)
{
if (i == segments - 1)
{
triangleList.Add(new Triangle(verts[i], verts[0], verts[i + segments]));
triangleList.Add(new Triangle(verts[0], verts[0 + segments], verts[i + segments]));
}
else
{
triangleList.Add(new Triangle(verts[i], verts[i + 1], verts[i + segments]));
triangleList.Add(new Triangle(verts[i + 1], verts[i + 1 + segments], verts[i + segments]));
}
}
}
else
{
throw new NotImplementedException();
}
return(triangleList.ToArray());
}