sumTriangleAreasPerpendicularToUpVector MethodStatic

Sum areas of triangles from points[0] to each far edge, as viewed with upVector pointing up.

• Consider triangles from points[0] to each edge.
• Sum the areas perpendicular to the upVector.
• If the upVector is near-zero length, a simple z vector is used.

sumTriangleAreasPerpendicularToUpVector(points: Point3d[] | GrowableXYZArray, upVector: Vector3d): number

@returns sum of triangle areas.

Returns - number

sum of triangle areas.

Defined in

• geometry3d/PolygonOps.ts Line 382