playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
43 lines (42 loc) • 1.69 kB
JavaScript
import { ConeBaseGeometry } from "./cone-base-geometry.js";
import { calculateTangents } from "./geometry-utils.js";
class CapsuleGeometry extends ConeBaseGeometry {
/**
* Create a new CapsuleGeometry instance.
*
* By default, the constructor creates a capsule standing vertically centered on the XZ-plane
* with a radius of 0.3, a height of 1.0, 1 height segment and 20 cap segments. The capsule is
* created with UVs in the range of 0 to 1.
*
* @param {object} [opts] - Options object.
* @param {number} [opts.radius] - The radius of the tube forming the body of the capsule.
* Defaults to 0.3.
* @param {number} [opts.height] - The length of the body of the capsule from tip to tip.
* Defaults to 1.
* @param {number} [opts.heightSegments] - The number of divisions along the tubular length of
* the capsule. Defaults to 1.
* @param {number} [opts.sides] - The number of divisions around the tubular body of the capsule.
* Defaults to 20.
* @param {boolean} [opts.calculateTangents] - Generate tangent information. Defaults to false.
* @example
* const geometry = new pc.CapsuleGeometry({
* radius: 1,
* height: 2,
* heightSegments: 2,
* sides: 20
* });
*/
constructor(opts = {}) {
const radius = opts.radius ?? 0.3;
const height = opts.height ?? 1;
const heightSegments = opts.heightSegments ?? 1;
const sides = opts.sides ?? 20;
super(radius, radius, height - 2 * radius, heightSegments, sides, true);
if (opts.calculateTangents) {
this.tangents = calculateTangents(this.positions, this.normals, this.uvs, this.indices);
}
}
}
export {
CapsuleGeometry
};