Rectangle

Overview

The Rectangle primitive represents a closed rectangular path in 3D space. It is defined by a center point, width (along the X-axis), and breadth (along the Z-axis). The rectangle lies in the XZ plane with Y as the normal direction. Use Cases:

Creating rectangular shapes and boundaries
Base profiles for extrusion
Floor plans and section cuts
Offset operations for creating concentric rectangles

Constructor

Rust
TypeScript

let rectangle = OGRectangle::new("rect-1".to_string());

const rectangle = new Rectangle(options?: IRectangleOptions);

Rust Constructor Parameters

String

required

Unique identifier for the rectangle instance

TypeScript Constructor Parameters

options

IRectangleOptions

Configuration options for the rectangle

options.ogid

string

Optional unique identifier (auto-generated if not provided)

options.center

Vector3

required

Center point of the rectangle

options.width

number

required

Width of the rectangle along the X-axis

options.breadth

number

required

Breadth of the rectangle along the Z-axis

options.color

number

required

Rectangle color as a hexadecimal number (e.g., 0x00ff00 for green)

Methods

set_config

Rust
TypeScript

rectangle.set_config(
    center: Vector3,
    width: f64,
    breadth: f64
);

Updates the rectangle’s geometric parameters.

rectangle.setConfig(options: IRectangleOptions);

Updates the rectangle configuration and regenerates geometry.

generate_geometry

Rust
TypeScript

rectangle.generate_geometry();

// Called automatically by setConfig

Generates four vertices forming the rectangle and creates edges connecting them. The geometry includes a face for the closed rectangle.

get_geometry_serialized

Rust
TypeScript

let geometry: String = rectangle.get_geometry_serialized();

// Used internally for rendering

Returns serialized vertex buffer data including the closing vertex (first vertex repeated).

get_offset_serialized

Rust
TypeScript

let offset_data = rectangle.get_offset_serialized(
    distance: f64,
    acute_threshold_degrees: f64,
    bevel: bool
);

const result = rectangle.getOffset(
    distance: number,
    acuteThresholdDegrees: number = 35.0,
    bevel: boolean = true
): IRectangleOffsetResult;

Generates an offset rectangle at the specified distance. Positive distances create larger rectangles, negative distances create smaller ones.

distance

number

required

Distance to offset the rectangle (positive = outward, negative = inward)

acuteThresholdDegrees

number

default:"35.0"

Angle threshold for beveling acute corners

bevel

boolean

default:"true"

Enable beveling at acute angles

get_brep_serialized

Rust
TypeScript

let brep: String = rectangle.get_brep_serialized();

const brep = rectangle.getBrep();

Returns the complete BREP representation including vertices, edges, and face.

getConfig

TypeScript

const config = rectangle.getConfig();

Returns the current rectangle configuration.

discardGeometry

TypeScript

rectangle.discardGeometry();

Disposes of the current geometry.

Properties

String

Unique identifier for the rectangle instance

center

Vector3

Center point of the rectangle (default: origin)

width

f64

Width along the X-axis (default: 1.0)

breadth

f64

Breadth along the Z-axis (default: 1.0)

brep

Brep

Internal BREP representation with 4 vertices, 4 edges, and 1 face

color

number

Rectangle color (TypeScript only, settable)

Code Examples

Creating a Basic Rectangle

Rust
TypeScript

use opengeometry::primitives::OGRectangle;
use openmaths::Vector3;

let mut rect = OGRectangle::new("rect-1".to_string());
rect.set_config(
    Vector3::new(0.0, 0.0, 0.0),  // center
    10.0,                          // width
    5.0                            // breadth
);
rect.generate_geometry();

import { Rectangle, Vector3 } from "opengeometry";

const rect = new Rectangle({
  center: new Vector3(0, 0, 0),
  width: 10,
  breadth: 5,
  color: 0x00ff00
});

Creating a Square

TypeScript

const square = new Rectangle({
  center: new Vector3(0, 0, 0),
  width: 8,
  breadth: 8,  // Equal to width
  color: 0xff0000
});

Generating Offset Rectangles

Rust
TypeScript

// Generate an outward offset rectangle
let offset_data = rect.get_offset_serialized(2.0, 35.0, true);
let result: OffsetResult = serde_json::from_str(&offset_data).unwrap();

// The result contains the offset rectangle's points
for point in result.points {
    println!("Point: ({}, {}, {})", point.x, point.y, point.z);
}

// Outward offset (larger rectangle)
const outerRect = rect.getOffset(2.0, 35.0, true);

// Inward offset (smaller rectangle)
const innerRect = rect.getOffset(-1.5, 35.0, true);

console.log(outerRect.points);              // Vector3[]
console.log(outerRect.beveledVertexIndices); // number[]
console.log(outerRect.isClosed);            // true for rectangles

Creating Concentric Rectangles

TypeScript

const baseRect = new Rectangle({
  center: new Vector3(0, 0, 0),
  width: 20,
  breadth: 15,
  color: 0x0000ff
});

// Create multiple offset rectangles
const offsets = [2, 4, 6, 8];
const concentricRects = offsets.map(distance => 
  baseRect.getOffset(-distance)
);

Updating Rectangle Dimensions

TypeScript

rect.setConfig({
  center: new Vector3(5, 0, 5),
  width: 15,
  breadth: 10,
  color: 0xffff00
});

// Change color
rect.color = 0xff00ff;

Getting Rectangle Vertices

Rust
TypeScript

// Get the four corner points
let points = rect.get_raw_points();
// Points are ordered: bottom-left, bottom-right, top-right, top-left

const brep = rect.getBrep();
const vertices = brep.vertices;
// vertices contains the 4 corner points

Live Demo

Rectangle Demo

Try the Rectangle primitive in the browser

Polygon

Complex 2D shapes with holes

Polyline

Connected line segments

Line

Straight line segments

2D Primitives

3D Shapes

Operations

Export (Experimental)

Overview

Constructor

Rust Constructor Parameters

TypeScript Constructor Parameters

Methods

set_config

generate_geometry

get_geometry_serialized

get_offset_serialized

get_brep_serialized

getConfig

discardGeometry

Properties

Code Examples

Creating a Basic Rectangle

Creating a Square

Generating Offset Rectangles

Creating Concentric Rectangles

Updating Rectangle Dimensions

Getting Rectangle Vertices

Live Demo

Rectangle Demo

See Also

Polygon

Polyline

Line

2D Primitives

3D Shapes

Operations

Export (Experimental)

​Overview

​Constructor

​Rust Constructor Parameters

​TypeScript Constructor Parameters

​Methods

​set_config

​generate_geometry

​get_geometry_serialized

​get_offset_serialized

​get_brep_serialized

​getConfig

​discardGeometry

​Properties

​Code Examples

​Creating a Basic Rectangle

​Creating a Square

​Generating Offset Rectangles

​Creating Concentric Rectangles

​Updating Rectangle Dimensions

​Getting Rectangle Vertices

​Live Demo

Rectangle Demo

​See Also

Polygon

Polyline

Line

Overview

Constructor

Rust Constructor Parameters

TypeScript Constructor Parameters

Methods

set_config

generate_geometry

get_geometry_serialized

get_offset_serialized

get_brep_serialized

getConfig

discardGeometry

Properties

Code Examples

Creating a Basic Rectangle

Creating a Square

Generating Offset Rectangles

Creating Concentric Rectangles

Updating Rectangle Dimensions

Getting Rectangle Vertices

Live Demo

See Also