How to get position from OBJ without loading it into scene?

dpk · October 5, 2019, 10:57am

I have 3 OBJ. 1 for default shape. 2. for Increased bust. 3. for decreased bust. I loaded default OBJ into scene and get position by
var sphere = scene.meshes[1];
var position = sphere.getVerticesData(BABYLON.VertexBuffer.PositionKind);
. I want to get position of 2nd and 3rd OBJ by new function. I don’t want to load these obj into scene.
Like
function getPos(){
BABYLON.SceneLoader.ImportMesh("", “assets/”, “InseamIncreases.obj”, scene, function (data) {
var position = data[1].getVerticesData(BABYLON.VertexBuffer.PositionKind);
});
}

Is there any way to get position without creating scene.?

Gijs · October 5, 2019, 3:28pm

There’s no built-in option, since the OBJ parser itself requires a scene in which to create the meshes:

github.com

BabylonJS/Babylon.js/blob/cfca2f6401719b3a4245362072f106456bdfa2f1/loaders/src/OBJ/objFileLoader.ts#L505


 * Each mesh contains all information given by the OBJ and the MTL file.
 * i.e. vertices positions and indices, optional normals values, optional UV values, optional material
 *
 * @param meshesNames
 * @param scene Scene The scene where are displayed the data
 * @param data String The content of the obj file
 * @param rootUrl String The path to the folder
 * @returns Array<AbstractMesh>
 * @private
 */
private _parseSolid(meshesNames: any, scene: Scene, data: string, rootUrl: string): Promise<Array<AbstractMesh>> {
    var positions: Array<Vector3> = [];      //values for the positions of vertices
    var normals: Array<Vector3> = [];      //Values for the normals
    var uvs: Array<Vector2> = [];      //Values for the textures
    var colors: Array<Color4> = [];
    var meshesFromObj: Array<MeshObject> = [];      //[mesh] Contains all the obj meshes
    var handledMesh: MeshObject;      //The current mesh of meshes array
    var indicesForBabylon: Array<number> = [];      //The list of indices for VertexData
    var wrappedPositionForBabylon: Array<Vector3> = [];      //The list of position in vectors
    var wrappedUvsForBabylon: Array<Vector2> = [];      //Array with all value of uvs to match with the indices
    var wrappedColorsForBabylon: Array<Color4> = []; // Array with all color values to match with the indices

Deltakosh · October 6, 2019, 1:31pm

But you can always create a dummy scene

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How to get position from OBJ without loading it into scene?

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