babylon Prevent delay in panning and zooming for arc rotate camera

[masterdon]

Hi Team,

I am using arc rotate camera in the scene. There is delay/animation in panning when pressed control+drag. I want the panning to happen on the go without delay. I am trying to modify the native library code for arc rotate camera, but the snippet itself is loaded with delay. Is there a way to disable delay/animation in panning effect? 

 

if (this.inertialPanningX !== 0 || this.inertialPanningY !== 0) {
                console.log('Start Drag---------------')
                console.log(new Date())
                if (!this._localDirection) {
                    this._localDirection = BABYLON.Vector3.Zero();
                    this._transformedDirection = BABYLON.Vector3.Zero();
                }
                this.inertialPanningX *= this.inertia;
                this.inertialPanningY *= this.inertia;
                if (Math.abs(this.inertialPanningX) < BABYLON.Epsilon)
                    this.inertialPanningX = 0;
                if (Math.abs(this.inertialPanningY) < BABYLON.Epsilon)
                    this.inertialPanningY = 0;
                this._localDirection.copyFromFloats(this.inertialPanningX, this.inertialPanningY, this.inertialPanningY);
                this._localDirection.multiplyInPlace(this.panningAxis);
                this._viewMatrix.invertToRef(this._cameraTransformMatrix);
                BABYLON.Vector3.TransformNormalToRef(this._localDirection, this._cameraTransformMatrix, this._transformedDirection);
                //Eliminate y if map panning is enabled (panningAxis == 1,0,1)
                if (!this.panningAxis.y) {
                    this._transformedDirection.y = 0;
                }
                if (!this.target.getAbsolutePosition) {
                    this.target.addInPlace(this._transformedDirection);
                }
                console.log(new Date())
                console.log('End Drag---------------')
            }

also tried setting various values to speed, panningSensibility, cameraAcceleration. 

[RaananW]

Howdy!

So, not sure what you mean actually. If there is a certain delay, it is max a single frame (ca. 16 ms) since the event data is not retrieved when the render loop is running. In reality, it is probably much less than 16ms. 

Where exactly do you see delay in the code? If there is, it is probably unintentional and should be removed.

[masterdon]

@RaananW: Thanks a lot for quick reply  

 

I want to have panning and zooming happening quickly. without smooth effect

[GameMonetize]

You should just set camera.inertia = 0 to remove the smooth effect

[RaananW]

What he said!  

[masterdon]

That works for zoom in/out. but panning isn't working any more  

 

here is the cam code

 

 scene = new BABYLON.Scene(engine);

    camera1 = new BABYLON.ArcRotateCamera("Camera1", 1.57, 0.01, 120, new BABYLON.Vector3(0, -0.4, 10), scene);
    camera1.attachControl(canvas, true);

    // This targets the camera to scene origin
    //camera1.setTarget(new BABYLON.Vector3.Zero());
    //set camera position
    camera1.setPosition(new BABYLON.Vector3(0, 200, 11));
    //set zoom limit
    camera1.inputs.attached['keyboard'].detachControl(canvas);
    camera1.lowerRadiusLimit = 40;
    camera1.upperRadiusLimit = 160;
    camera1.checkCollisions = true;
    if (!is3D) {
        //limit the arcCam alpha and beta (essentially to disabled the rotation).
        camera1.upperAlphaLimit = -Math.PI / 2;
        camera1.lowerAlphaLimit = -Math.PI / 2;
        camera1.upperBetaLimit = 0;
        camera1.lowerBetaLimit = 0;
    }

    camera1.inertia = 0
    //camera1.speed = 500
    scene.activeCamera = camera1;
    scene.activeCamera.attachControl(canvas, true);

 

[Gijs]

You should set the panning inertia to 0:

camera1.panningInertia = 0;

 

[masterdon]

Hey Gijs. Its not working. tried all combination for values

 

       camera1.inertia = 0
       camera1.panningInertia = 0;

[GameMonetize]

Can you repro in the playground?