Is it possible to dynamically add and remove objects from a scene with just a click?
Currently, I am using scene.add(object) and scene.remove(object) for this purpose.
I am wondering if there is any method to verify whether the object is already in the scene or not.
Ensure to assign a name to your object when adding it to the scene, as shown below:
object.name = 'unique_name';You can then verify the presence of your object in the scene by using the following method:
scene.getObjectByName('unique_name');If this method returns any object, it indicates that the object exists within the scene.
Perhaps a better option:
object.parent === scene
Here's an alternative method to achieve the same result:
function isObjectInScene(scene, object) {
let current_object = object;
while(current_object.parent !== null) {
current_object = current_object.parent;
if(current_object === scene) {
return true;
}
}
return false;
}
@Neptilo seems to be on the right path. If an object is part of the scene, its parent or ancestor should eventually lead to the scene itself.
Therefore, by tracing the parent references upwards, you can determine if an object exists within a scene or not.
When objects are removed using scene/obj.remove(obj), their parent value becomes null.
It is likely that any other method of checking if an object is part of a scene, such as searching for objects by name or ID, would require traversing the entire scene, making it less efficient than simply following the parent chain until reaching the root.
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