Struct ViewFrame 

pub struct ViewFrame {
    pub direction: ViewAxis,
    pub right: ViewAxis,
    pub up: ViewAxis,
}

How a view looks: direction from the eye into the part, and the paper’s right and up — right-handed, right x up = -direction.

Fields

direction: ViewAxis

right: ViewAxis

up: ViewAxis

Implementations

impl ViewFrame

pub fn looking(direction: Vector3, up: Vector3) -> GeopResult<Self>

The frame looking along direction, with right and up on the paper; direction is normalized, and right and up made perpendicular to it.

pub fn project_point(&self, p: &Vector3) -> Vector2

Where p lands on the paper.

pub fn project_curve(&self, curve: &NurbCurve3D) -> GeopResult<NurbCurve2D>

curve as drawn on the paper: the projection is linear, so it maps homogeneous control points to homogeneous control points, keeping the knots and weights — the same parametrization, exactly.

pub fn toward_eye(&self) -> Vector3

The unit vector from the part towards the eye.

Trait Implementations

impl Clone for ViewFrame

fn clone(&self) -> ViewFrame

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ViewFrame

impl Debug for ViewFrame

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

Formats the value using the given formatter.