glam/es5/lib/geometry/index.js

Experimental WebGL Engine

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = geometry;
/** 

 * Geometry contains all of the data buffers for rendering. The buffers are managed by [stack.gl]{@link http://stack.gl}'s
 * [gl-module]{@link http://stack.gl/packages/#hughsk/gl-geometry}. Buffers typically consist of vertex positions, elements
 * arrays (known as cells, or faces), normals, and other per-vertex data.
 * @module geometry
 */

/**
 * @typedef Geometry
 * @property {number} flags @todo
 * @property {gl-geometry} buffers automatically set by the renderer after the first render
 * @property {number} data the data that is turned into ArrayBuffers.
 */

function Geometry(simplicialComplex) {

  this.flags = {
    updateBuffers: true
  };

  this.buffers = null; // gl-geometry

  this.data = {
    positions: simplicialComplex.positions,
    cells: simplicialComplex.cells,
    normals: simplicialComplex.normals
  };
}

/**
 * The main exported function. Run it to create a Geometry.
 * @function geometry
 * @param {object} [simplicialComplex] Provide an initial simplicial complex, or simply put an object with
 *        a positions and cells attribute.
 * @returns {Geometry}
 */

function geometry(simplicialComplex) {
  return new Geometry(simplicialComplex ? simplicialComplex : {});
}