Question

A loader for loading a .pdb resource.
The Protein Data Bank file format is a textual file describing the three-dimensional structures of molecules.

代码示例

// instantiate a loader
const loader = new PDBLoader();
// load a PDB resource
loader.load(
  // resource URL
  'models/pdb/caffeine.pdb',
  // called when the resource is loaded
  function ( pdb ) {
    const geometryAtoms = pdb.geometryAtoms;
    const geometryBonds = pdb.geometryBonds;
    const json = pdb.json;
    console.log( 'This molecule has ' + json.atoms.length + ' atoms' );
  },
  // called when loading is in progresses
  function ( xhr ) {
    console.log( ( xhr.loaded / xhr.total * 100 ) + '% loaded' );
  },
  // called when loading has errors
  function ( error ) {
    console.log( 'An error happened' );
  }
);

例子

webgl_loader_pdb

Constructor

PDBLoader( manager : LoadingManager )

manager — The loadingManager for the loader to use. Default is THREE.DefaultLoadingManager.

Creates a new PDBLoader.

Properties

See the base Loader class for common properties.

Methods

See the base Loader class for common methods.

.load ( url : String, onLoad : Function, onProgress : Function, onError : Function ) : null

url — A string containing the path/URL of the .pdb file.
onLoad — (optional) A function to be called after loading is successfully completed. The function receives the object having the following properties. geometryAtoms, geometryBonds and the JSON structure.
onProgress — (optional) A function to be called while the loading is in progress. The argument will be the XMLHttpRequest instance, which contains total and loaded bytes.
onError — (optional) A function to be called if an error occurs during loading. The function receives the error as an argument.

Begin loading from url and call onLoad with the parsed response content.

.parse ( text : String ) : Object

text — The textual pdb structure to parse.

Parse a pdb text and return a JSON structure.

Source

examples/jsm/loaders/PDBLoader.js