How do you use the Extrusion Body feature in lines?

[leye123]

Hi, I have a closed curve and a direction for extrusion.But I couldn't find the corresponding function. How should I use this feature?

[Grantim]

Hello!

The plugin is calling this function:

MeshLib/source/MRMesh/MRMovementBuildBody.h

Lines 39 to 42 in 5e1a3c0

	/// makes mesh by moving `body` along `trajectory`
	/// if allowRotation rotate it in corners
	[[nodiscard]] MRMESH_API Mesh makeMovementBuildBody( const Contours3f& body, const Contours3f& trajectory,
	const MovementBuildBodyParams& params = {} );

[leye123]

Could you provide an example to show this functionality? Specifically, for a vector3f set of points and a direction?

[Grantim]

You can refer to this sample: #2281 (comment)
Notes:

• Contours3f = std::vector<std::vector> (vector of curves, front==last indicating closed curves)
• direction->trajectory - {{Vector3f(), direction}} + params.startMeshFromBody = true (to start from body mesh and not trajectory)

Mesh foo( const std::vector<Vector3f>& body, const Vector3f& direction )
{
    return makeMovementBuildBody( { body }, { { Vector3f{}, direction } }, {
        .startMeshFromBody = true
    } );
}

[leye123]

Thank you for your reply.