normal_triangle_xy

compas.geometry.normal_triangle_xy(triangle, unitized=True)

Compute the normal vector of a triangle assumed to lie in the XY plane.

Parameters:

triangle[point, point, point] | compas.geometry.Polygon

A list of triangle point coordinates. Z-coordinates are ignored.

unitizedbool, optional

If True, unitize the normal vector.

Returns:

[float, float, float]

The normal vector, which is a vector perpendicular to the XY plane.

Raises:

ValueError

If the triangle does not have three vertices.

See also

normal_polygon

normal_triangle