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Adds face edition and removal

This commit is contained in:
Thomas Forgione 2019-12-11 15:44:21 +01:00
parent 635e5fef01
commit 0490db4bb6
No known key found for this signature in database
GPG Key ID: BFD17A2D71B3B5E7
3 changed files with 44 additions and 4 deletions
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16
src/Loader.js
View File

@ -50,6 +50,20 @@ function parseLine(line) {
);
return element;
case "ef":
element.type = Element.EditFace;
element.id = parseInt(split[1], 10) - 1;
element.value = new THREE.Face3(
parseInt(split[2], 10) - 1,
parseInt(split[3], 10) - 1,
parseInt(split[4], 10) - 1,
);
case "df":
element.type = Element.DeleteFace;
element.id = parseInt(split[1], 10) - 1;
return element;
case "":
case "#":
return;
@ -64,6 +78,8 @@ const Element = {};
Element.AddVertex = "AddVertex";
Element.AddFace = "AddFace";
Element.EditVertex = "EditVertex";
Element.EditFace = "EditFace";
Element.DeleteFace = "DeleteFace";
class Loader {
constructor(path, chunkSize = 1024, timeout = 20) {

30
src/Model.js
View File

@ -1,8 +1,11 @@
class Model extends THREE.Mesh {
constructor() {
let geometry = new THREE.Geometry();
let material = new THREE.MeshLambertMaterial({color: 0xffffff});
super(geometry, material);
let materials = [
new THREE.MeshLambertMaterial( { color: 0xffffff, side: THREE.DoubleSide } ),
new THREE.MeshBasicMaterial( { transparent: true, opacity: 0 } )
];
super(geometry, materials);
this.frustumCulled = false;
this.vertices = [];
}
@ -17,7 +20,6 @@ class Model extends THREE.Mesh {
case Element.EditVertex:
this.geometry.vertices[element.id].copy(element.value);
this.geometry.verticesNeedUpdate = true;
this.geometry.elementsNeedUpdate = true;
break;
case Element.AddFace:
@ -30,10 +32,32 @@ class Model extends THREE.Mesh {
normal.normalize();
f.normal = normal;
f.materialIndex = 0;
this.geometry.faces.push(f);
this.geometry.elementsNeedUpdate = true;
break;
case Element.EditFace:
vertices = this.geometry.vertices;
f = element.value;
normal =
vertices[f.b].clone().sub(vertices[f.a])
.cross(vertices[f.c].clone().sub(vertices[f.a]));
normal.normalize();
f.normal = normal;
this.geometry.faces[element.id] = f;
this.geometry.elementsNeedUpdate = true;
break;
case Element.DeleteFace:
this.geometry.faces[element.id].materialIndex = 1;
this.geometry.elementsNeedUpdate = true;
break;
default:
throw new Error("unknown element type: " + element.type);
}

2
src/main.js
View File

@ -5,7 +5,7 @@ animate();
function init() {
loader = new Loader('assets/bunny_translate.obj');
loader = new Loader('assets/bunny_remove.obj');
loader.start(function(elements) {
for (let element of elements) {
if (element !== undefined) {