Make objects cast/receive shadows

Questions
1

In my project I have functions to create objects and light, I don’t have direct access to objects. How can I make those objects cast shadows?

    createbox(args) {
      const box = BABYLON.MeshBuilder.CreateBox(args.name, { size: 1 }, scene);
      box.position.x = args.x;
      box.position.y = args.y;
      box.position.z = args.z;
      box.rotation.x = args.rx;
      box.rotation.y = args.ry;
      box.rotation.z = args.rz;
      box.scaling.x = args.sx;
      box.scaling.y = args.sy;
      box.scaling.z = args.sz;
      box.receiveShadows = true;
      box.castShadows = true;
      material.diffuseTexture = new BABYLON.Texture(textureDataURI, scene);
      if (args.staticdynamic == 1) {
        let boxAggregate = new BABYLON.PhysicsAggregate(box, BABYLON.PhysicsShapeType.BOX, { mass: 1, restitution:0}, scene);
      }
      else{
        var boxAggregate = new BABYLON.PhysicsAggregate(box, BABYLON.PhysicsShapeType.BOX, { mass: 0 }, scene);
      }
    }

    addpointlight(args){
      const pointLight = new BABYLON.PointLight(args.name, new BABYLON.Vector3(args.x,args.y, args.z), scene);}
2

I believe you have the list of args

const shadowGenerator = new BABYLON.ShadowGenerator(1024, scene.getLightByName(args.name));

shadowGenerator.getShadowMap().renderList.push(scene.getMeshByName(args.name));

(iterate the last part through the args list)

3

Args are not a list, they are just arguments. I don’t have any arrays here. Is there any way to just make it so that every object automatically casts shadows?

4

You need to create in shadowGenerator in your addpointlight function, then push meshes to renderList in your createbox function.

1 Like
5

Arrays will not do any harm, you may add each created mesh to some array for easy reference.

2 Likes
6

Great, I’m doing them now. Thanks!

1 Like
7

Actually, if I have an array for objects and a separate array for lights (shadowgenerators), how am I supposed to run in runtime. Do shadowgenerators check if they already made some object cast shadows?

8

Yes, there is the simple check

1 Like