playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
43 lines (42 loc) • 1.78 kB
JavaScript
import { ConeBaseGeometry } from "./cone-base-geometry.js";
import { calculateTangents } from "./geometry-utils.js";
class ConeGeometry extends ConeBaseGeometry {
/**
* Create a new ConeGeometry instance.
*
* By default, the constructor creates a cone standing vertically centered on the XZ-plane with
* a base radius of 0.5, a height of 1.0, 5 height segments and 18 cap segments. The cone is
* created with UVs in the range of 0 to 1.
*
* @param {object} [opts] - Options object.
* @param {number} [opts.baseRadius] - The base radius of the cone. Defaults to 0.5.
* @param {number} [opts.peakRadius] - The peak radius of the cone. Defaults to 0.
* @param {number} [opts.height] - The length of the body of the cone. Defaults to 1.
* @param {number} [opts.heightSegments] - The number of divisions along the length of the cone.
* Defaults to 5.
* @param {number} [opts.capSegments] - The number of divisions around the tubular body of the
* cone. Defaults to 18.
* @param {boolean} [opts.calculateTangents] - Generate tangent information. Defaults to false.
* @example
* const geometry = new pc.ConeGeometry({
* baseRadius: 1,
* height: 2,
* heightSegments: 2,
* capSegments: 20
* });
*/
constructor(opts = {}) {
const baseRadius = opts.baseRadius ?? 0.5;
const peakRadius = opts.peakRadius ?? 0;
const height = opts.height ?? 1;
const heightSegments = opts.heightSegments ?? 5;
const capSegments = opts.capSegments ?? 18;
super(baseRadius, peakRadius, height, heightSegments, capSegments, false);
if (opts.calculateTangents) {
this.tangents = calculateTangents(this.positions, this.normals, this.uvs, this.indices);
}
}
}
export {
ConeGeometry
};