Enum GeomTransf 

pub enum GeomTransf {
    Linear,
    PDelta,
    Corotational,
}

Coordinate-transformation strategy for planar frame elements: relates an element’s local (basic) stiffness/forces to the global system. The co-rotational option follows the deformed chord and removes rigid-body translation/rotation from the element’s basic deformations.

Linear and PDelta select the existing small-displacement paths. Corotational2d centralizes the current-chord kinematics used by the planar elastic, displacement-based, and force-based frame elements. GeomTransf3 (below) remains a separate spatial type.

Variants

Linear

Small-displacement: local/global relationship fixed at the element’s original (undeformed) orientation, no correction for the effect of axial force on bending stiffness.

PDelta

Same small-displacement geometry as Linear, plus a linearized geometric-stiffness correction from the current axial force (a first-order P-Delta effect) — not full corotational tracking.

Corotational

Finite-rotation planar transformation. The current chord defines the element axes; axial extension and end rotations relative to that chord are the three objective basic deformations.

Trait Implementations

impl Clone for GeomTransf

fn clone(&self) -> GeomTransf

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for GeomTransf

impl Debug for GeomTransf

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for GeomTransf

impl PartialEq for GeomTransf

fn eq(&self, other: &GeomTransf) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for GeomTransf