Struct AnchorPoint 

pub struct AnchorPoint {
    pub anchor: String,
    pub kind: String,
    pub at: [f64; 2],
    pub model: [f64; 3],
    pub dir: Option<[f64; 2]>,
    pub radius: Option<f64>,
    pub u: Option<[f64; 2]>,
    pub v: Option<[f64; 2]>,
}

One point of a placement’s projection a sheet dimension can anchor to.

anchor is the reference string (super::dimension::SheetAnchor) — the name that survives a re-projection — and at is where it landed on the paper THIS time. The sheet viewport publishes one hit rect per candidate while the reference picker is up for a sheet object, and a dimension resolves its anchors by looking its references up in this list: an anchor that is not here is a LOST anchor, which is what marks its dimension unresolved.

Fields

anchor: String

kind: String

vertex, edge or circle.

at: [f64; 2]

Paper millimetres.

model: [f64; 3]

The 3D point before projection, in model units, with this view’s poses applied. Aligned dimensions measure here so an oblique camera cannot foreshorten their values; at remains the point used for layout.

dir: Option<[f64; 2]>

The unit PAPER direction of a STRAIGHT display edge — an edge candidate only, and None on a curved edge or one that projects to a point (an edge parallel to the viewing direction). It is what an ANGULAR dimension measures between: the edge’s direction as this view projects it, so a foreshortened angle reads its projected value.

Straightness is judged in the MODEL, not on the paper: a circular edge seen edge-on projects to a straight segment and is not a straight edge. All three fractions of one edge carry the same direction — it is the EDGE’s, not the point’s.

radius: Option<f64>

The circle’s MODEL radius — a circle candidate only.

u: Option<[f64; 2]>

The paper images of the circle’s two conjugate radii: the projected circle is the ellipse at + u cos t + v sin t. A circle candidate only, and what a radial dimension’s leader measures its reach along.

v: Option<[f64; 2]>

Trait Implementations

impl Clone for AnchorPoint

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AnchorPoint

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

Formats the value using the given formatter.

impl PartialEq for AnchorPoint

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for AnchorPoint

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AnchorPoint