Polygon3D

Canonical path: NemAll_Python_Geometry.Polygon3D

Bases: PolyPoints3D

Representation of a plane polygon in a three dimensional space

To construct a valid 3D polygon from a bunch of points, the following rules must be fulfilled:

• First and last point must coincide. This class does not 'auto-close' polygons! A quadratic shape with '4' edges has to be defined by passing 5 points to a constructor. For such an object, the Count() method will return 5 accordingly.
• The orientation of the points must be monotonous. It can be either clockwise or counter-clockwise.
• All the points must be coplanar.
• The polygon must not self-intersect itself. You can create polygons that self-intersect or have alternating orientation, but in those cases some methods will raise errors or return wrong calculation results.

Each polygon consists of one or more components. A component is a closed loop, representing either a solid or a cut-out, depending on the orientation of the loop (if counter-clockwise is solid element, then clockwise is a cut-out). Each component must be closed (first and last point coincide).

Methods:

• GetLines –

  Get edge lines of polygon

• GetPlane –

  Calculate plane

• GetVertices –

  Get polygon vertices

• InsertPolygon –

  Insert a polygon into current one

• IsValid –

  Check polygon validity

• IsValidStatus –

  Check polygon validity

• Normalize –

  Normalization of 3d polygon

• NormalizeNoThrow –

  Normalize Polygon3D.

• Reverse –

  Reverse the point order in polygon, separately for every sub-polygon

• __eq__ –

  Equal operator

• __iadd__ –

  Overloaded function. See individual overloads.

• __init__ –

  Overloaded function. See individual overloads.

• __mul__ –

  Matrix transformation

• __ne__ –

  Not equal operator

• __repr__ –

  Convert to string

GetLines

GetLines() -> Line3DList

Get edge lines of polygon

Returns:

• Line3DList –

  Edge lines of polygon

GetPlane

GetPlane() -> tuple[eGeometryErrorCode, Plane3D]

Calculate plane

Returns:

• tuple[eGeometryErrorCode, Plane3D] –

  Plane where polygon is

GetVertices

GetVertices() -> object

Get polygon vertices

Returns:

• object –

  polygon vertices

InsertPolygon

InsertPolygon(polygon: Polygon3D, position: int = -1) -> bool

Insert a polygon into current one

Parameters:

• polygon (Polygon3D) –

  Polygon which will be inserted

• position (int, default: -1 ) –

  Position where the polygon will be inserted

Returns:

• bool –

  true if insert was successful

IsValid

IsValid() -> bool

Check polygon validity

Returns:

• bool –

  true = valid, false = not valid

IsValidStatus

IsValidStatus() -> tuple

Check polygon validity

Returns:

• tuple –

  true = valid, false = not valid,

• tuple –

  If polygon is invalid, here is the reason.

Normalize

Normalize(
    normalizeType: ePolygonNormalizeType = DEFAULT_NORM_TYPE,
    extra_smooth: bool = False,
)

Normalization of 3d polygon

Parameters:

• normalizeType (ePolygonNormalizeType, default: DEFAULT_NORM_TYPE ) –

  Normalization type

• extra_smooth (bool, default: False ) –

  Increase level of details

NormalizeNoThrow

NormalizeNoThrow(
    normalizeType: ePolygonNormalizeType = DEFAULT_NORM_TYPE,
    extra_smooth: bool = False,
) -> eGeometryErrorCode

Normalize Polygon3D.

Same as Normalize, but method doesn't throw exception, just return error code

Parameters:

• normalizeType (ePolygonNormalizeType, default: DEFAULT_NORM_TYPE ) –

  type of Polygon2D normalization

• extra_smooth (bool, default: False ) –

  Including extra smooth: true/false

Returns:

• eGeometryErrorCode –

  Error code (eOK, eAllocError, eStructuralError, eWrongShape)

Reverse

Reverse()

Reverse the point order in polygon, separately for every sub-polygon

__eq__

__eq__(polygon2: Polygon3D) -> bool

Equal operator

Parameters:

• polygon2 (Polygon3D) –

  Second polygon

Returns:

• bool –

  Polyline3D are equal

__iadd__ overloaded

__iadd__(polygon: Polygon3D) -> Polygon3D

Addition assignment operator

Parameters:

• polygon (Polygon3D) –

  Polygon which will be copied

Returns:

• Polygon3D –

  Reference to polygon

__iadd__(point: Point3D) -> Polygon3D

Addition assignment operator

Parameters:

• point (Point3D) –

  New Point3D which will be added to the polygon

Returns:

• Polygon3D –

  Reference to polygon

__init__ overloaded

__init__()

Initialize

__init__(pntList: list[Point3D])

Constructor with an initializer list

Parameters:

• pntList (list[Point3D]) –

  Point list

__init__(polygon: Polygon3D)

Copy constructor.

Parameters:

• polygon (Polygon3D) –

  Polygon which will be copied

__mul__

__mul__(matrix: Matrix3D) -> Polygon3D

Matrix transformation

Parameters:

• matrix (Matrix3D) –

  Transformation matrix

Returns:

• Polygon3D –

  Reference to polygon

__ne__

__ne__(polygon2: Polygon3D) -> bool

Not equal operator

Parameters:

• polygon2 (Polygon3D) –

  Second polygon

Returns:

• bool –

  Polyline3D are equal

__repr__

__repr__() -> str

Convert to string

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