How can I clear selection when picking nothing

[BlackMojito]

Hi Guys,

I am doing selection by adding a pointer observer like below. But there is one thing that this can not work which is clearing the selection(s) when clicking on the "empty" place. I know that I can add an observer with POINTERDOWN(or POINTERUP), but what I wish is when I rotate the camera by left click + dragging, the "selection event" will not be triggered. Only when I click at the empty place without rotating the camera, the selection will be cleared. How can I do this though?

 

addPickingObserver(observer: (eventData: BABYLON.PointerInfo, eventState: BABYLON.EventState) => void): void {
    this._scene.onPointerObservable.add(observer, BABYLON.PointerEventTypes.POINTERPICK);
}


private createDefaultPicker(): void {
    let observer = (eventData: BABYLON.PointerInfo, eventState: BABYLON.EventState) => {
        this._selector.clearSelections();
        if (eventData.pickInfo.hit) {
            let renderModel = this._renderScene.getRenderModel(eventData.pickInfo.pickedMesh);
            let selection = new Selection(new PickingInfoEx(eventData.pickInfo, renderModel));
            this._selector.addSelection(selection);
        }
    }

    this._renderScene.addPickingObserver(observer);
}

 

[Sebavan]

You can use the action mananger with  OnPickDownTrigger for this: https://doc.babylonjs.com/how_to/how_to_use_actions

[BlackMojito]

7 hours ago, Sebavan said:

You can use the action mananger with  OnPickDownTrigger for this: https://doc.babylonjs.com/how_to/how_to_use_actions

But this cannot be triggered when I click on the "background" right? There is not mesh actually picked...

[BlackMojito]

Is it possible to add something like BABYLON.PointerEventTypes.POINTPICKMISS ?

[Sebavan]

Won t help here as we still pick on move:

you can easily do like here: https://www.babylonjs-playground.com/#IEQ92B

var ok = true;

 

scene.onPointerObservable.add(function()

{

ok = true;

}, BABYLON.PointerEventTypes.POINTERDOWN);

 

scene.onPointerObservable.add(function()

{

ok = false;

}, BABYLON.PointerEventTypes.POINTERMOVE);

 

scene.onPointerObservable.add(function()

{

if (ok) {

alert();

}

}, BABYLON.PointerEventTypes.POINTERUP);

[brianzinn]

3 hours ago, BlackMojito said:

like BABYLON.PointerEventTypes.POINTPICKMISS

Isn't that the same as !if (eventData.pickInfo.hit), so just adding an else to your if statement?  ie: eventData.pickInfo.hit == false.

[RaananW]

Isn't it enough to check for pointerInfo.hit on te PointerDown event? if there is a hit, something was selected, if not then no? You can set pickable meshes and non-pickable meshes, or use a different form of filtering.

Or, maybe I didn't understand the problem  

[adam]

http://playground.babylonjs.com/#XZS5CB

[aWeirdo]

Hi @BlackMojito

If i understood correctly, believe you're in need of a pointer cache.
This will allow you to pick with single clicks (including failed picks) and ignore picking on panning, etc,
clickSensibility controls how much the pointer is allowed to move while still considdering it a picking click. 

http://playground.babylonjs.com/#XZS5CB#4