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sample_part_standard.htm
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<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8>
<title>Sample render of a part where part files are found in the official and unofficial folders</title>
<meta name="viewport" content="width=device-width" />
</head>
<body>
<script src="js/three.min.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/colors.js"></script>
<script src="js/LDROptions.js"></script>
<script src="js/LDRShaders.js"></script>
<script src="js/LDRColorMaterials.js"></script>
<script src="js/LDRGeometries.js"></script>
<script src="js/LDRMeasurer.js"></script>
<script src="js/ClientStorage.js"></script>
<script src="js/LDRLoader.js"></script>
<script src="js/LDRGenerator.js"></script>
<script src="js/LDRStuds.js"></script>
<script>
let partID = '44375bps0.dat'; // Set the part to load here.
//let partID = 'stud-logo.dat';
//let partID = '18675ps2.dat';
let color = 40;
// Set up camera:
var camera = new THREE.OrthographicCamera(-1, 1, 1, -1, 0.1, 1000000);
// Set up scene:
var scene = new THREE.Scene();
var baseObject;
scene.background = new THREE.Color(0xFFFFFF); // Set the background color of the renderer here!
// Set up renderer:
var renderer = new THREE.WebGLRenderer({antialias: true});
renderer.setPixelRatio(window.devicePixelRatio);
function render() {
renderer.render(scene, camera);
}
document.body.appendChild(renderer.domElement);
function onWindowResize(){
camera.left = -window.innerWidth;
camera.right = window.innerWidth;
camera.top = window.innerHeight;
camera.bottom = -window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
render();
}
// React to user input:
var controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.addEventListener('change', render);
window.addEventListener('resize', onWindowResize, false);
// Three.js loader for LDraw models:
var ldrLoader;
var onLoad = function() {
if(!ldrLoader.mainModel) {
ldrLoader.mainModel = partID;
}
var pt = ldrLoader.getMainModel();
// Place model in scene:
var origo = new THREE.Vector3();
var inv = new THREE.Matrix3();
inv.set(1,0,0, 0,-1,0, 0,0,-1); // Invert Y, and Z-axis for LDraw
// Set up objects for proper rendering order (when parts contain both transparent and opaque parts, the transparent parts should be rendered last:
if(baseObject) {
scene.remove(baseObject); // Remove existing geometries in case the user calls load more than once.
}
baseObject = new THREE.Group()
let opaqueObject = new THREE.Group(), sixteenObject = new THREE.Group(); transObject = new THREE.Group();
baseObject.add(opaqueObject);
baseObject.add(sixteenObject);
baseObject.add(transObject);
scene.add(baseObject);
let mc = new LDR.MeshCollector(opaqueObject, sixteenObject, transObject);
// Generate the mesh:
pt.generateThreePart(ldrLoader, color, origo, inv, true, false, mc);
// Find center of drawn model:
let b = mc.boundingBox;
let elementCenter = new THREE.Vector3();
b.getCenter(elementCenter);
baseObject.position.set(-elementCenter.x, -elementCenter.y, -elementCenter.z);
let size = new THREE.Vector3();
b.getSize(size);
size = Math.sqrt(size.x*size.x + size.y*size.y + size.z*size.z);
camera.position.set(size*10/7, size, size*10/7);
camera.lookAt(new THREE.Vector3());
let measurer = new LDR.Measurer(camera); // Used for making the shown part fill the renderer.
let [dx,dy] = measurer.measure(b, baseObject.matrixWorld);
camera.zoom = 1.6*Math.min(window.innerWidth/dx, window.innerHeight/dy); // 1.6 to make the part not fill the full element. Use 2.0 to max it out.
onWindowResize();
}
// The following function makes the ldrLoader search through the official
// and unofficial file structures (unofficial/ and unofficial/) for parts.
const OFFICIAL_DIR = 'official', UNOFFICIAL_DIR = 'unofficial';
var idToUrl = function(id) {
if(id.startsWith('48/') || id.startsWith('8/')) {
return [OFFICIAL_DIR + '/p/' + id,
UNOFFICIAL_DIR + '/p/' + id];
}
else if(id.startsWith('s/')) {
return [OFFICIAL_DIR + '/parts/' + id,
UNOFFICIAL_DIR + '/parts/' + id];
}
else if(id.match(/[a-z][a-z].*\.dat/)) {
return [OFFICIAL_DIR + '/p/' + id,
OFFICIAL_DIR + '/parts/' + id,
UNOFFICIAL_DIR + '/p/' + id,
UNOFFICIAL_DIR + '/parts/' + id];
}
else {
return [OFFICIAL_DIR + '/parts/' + id,
OFFICIAL_DIR + '/p/' + id,
UNOFFICIAL_DIR + '/parts/' + id,
UNOFFICIAL_DIR + '/p/' + id];
}
}
// The section below ensures studs are shown:
LDR.Studs.makeGenerators('', 0, 1);
let storage = {
retrievePartsFromStorage: (loader, toBeFetched, onDone) => {
let retrieved = [];
function attemptGeneratorFirst(id) {
let pt = LDR.Generator.make(id);
if(pt) {
loader.partTypes[id] = pt;
pt.steps.forEach(step => step.subModels.forEach(sm => attemptGeneratorFirst(sm.ID)));
retrieved.push(id);
}
else {
loader.load(id);
}
}
toBeFetched.forEach(attemptGeneratorFirst);
onDone(retrieved);
}
};
ldrLoader = new THREE.LDRLoader(onLoad, storage, {idToUrl:idToUrl});
ldrLoader.load(partID);
//LDR.Studs.setStuds(ldrLoader, 0, 1, () => ldrLoader.load(partID));
</script>
</body>
</html>