GDSII Elements

Detailed reference for all GDSII element types supported by LayKit.

Boundary

Polygon element with arbitrary vertices.

#![allow(unused)]
fn main() {
pub struct Boundary {
    pub layer: i16,
    pub datatype: i16,
    pub xy: Vec<(i32, i32)>,
    pub properties: Vec<GDSProperty>,
}
}

Usage: Representing filled shapes, design regions, and complex polygons.

Path

Wire or trace element with specified width.

#![allow(unused)]
fn main() {
pub struct GPath {
    pub layer: i16,
    pub datatype: i16,
    pub pathtype: i16,
    pub width: Option<i32>,
    pub xy: Vec<(i32, i32)>,
    pub properties: Vec<GDSProperty>,
}
}

Path types:

• 0 - Square ends (default)
• 1 - Round ends
• 2 - Flush ends

Text

Text label element.

#![allow(unused)]
fn main() {
pub struct GText {
    pub layer: i16,
    pub texttype: i16,
    pub string: String,
    pub xy: (i32, i32),
    pub strans: Option<STrans>,
    pub properties: Vec<GDSProperty>,
}
}

StructRef (SREF)

Reference to another structure (cell instance).

#![allow(unused)]
fn main() {
pub struct StructRef {
    pub sname: String,
    pub xy: (i32, i32),
    pub strans: Option<STrans>,
    pub properties: Vec<GDSProperty>,
}
}

ArrayRef (AREF)

Array of structure references.

#![allow(unused)]
fn main() {
pub struct ArrayRef {
    pub sname: String,
    pub columns: i16,
    pub rows: i16,
    pub xy: [(i32, i32); 3],
    pub strans: Option<STrans>,
    pub properties: Vec<GDSProperty>,
}
}

The xy array contains:

• [0] - Reference point
• [1] - Column spacing point
• [2] - Row spacing point

STrans

Transformation for references and text.

#![allow(unused)]
fn main() {
pub struct STrans {
    pub reflect_x: bool,
    pub absolute_mag: bool,
    pub absolute_angle: bool,
    pub magnification: Option<f64>,
    pub angle: Option<f64>,
}
}

Node

Net connectivity element.

#![allow(unused)]
fn main() {
pub struct Node {
    pub layer: i16,
    pub nodetype: i16,
    pub xy: Vec<(i32, i32)>,
    pub properties: Vec<GDSProperty>,
}
}

Box

Box element (rare in modern designs).

#![allow(unused)]
fn main() {
pub struct GDSBox {
    pub layer: i16,
    pub boxtype: i16,
    pub xy: [(i32, i32); 5],
    pub properties: Vec<GDSProperty>,
}
}