AxisScaleGizmo API: provide drag strength sensitivity scalar

bigtimebuddy · November 6, 2019, 11:01pm

In the code for the AxisScaleGizmo, there’s no way to provide an additional, custom dragStrength sensitivity. The only way to change dragStrength is modifying the scaleRatio of the gizmo itself. It would be nice to add an optional multiplier for fine or rough scale adjustments.

Code reference here:

github.com

BabylonJS/Babylon.js/blob/master/src/Gizmos/axisScaleGizmo.ts#L95


this.dragBehavior = new PointerDragBehavior({ dragAxis: dragAxis });

this.dragBehavior.moveAttached = false;

this._rootMesh.addBehavior(this.dragBehavior);



var currentSnapDragDistance = 0;

var tmpVector = new Vector3();

var tmpSnapEvent = { snapDistance: 0 };

this.dragBehavior.onDragObservable.add((event) => {

    if (this.attachedMesh) {

        // Drag strength is modified by the scale of the gizmo (eg. for small objects like boombox the strength will be increased to match the behavior of larger objects)

        var dragStrength = event.dragDistance * ((this.scaleRatio * 3) / this._rootMesh.scaling.length());



        // Snapping logic

        var snapped = false;

        var dragSteps = 0;

        if (this.uniformScaling) {

            this.attachedMesh.scaling.normalizeToRef(tmpVector);

            if (tmpVector.y < 0) {

                tmpVector.scaleInPlace(-1);

            }

        } else {

Deltakosh · November 6, 2019, 11:17pm

Invoking the gizmo overlord @Cedric

Cedric · November 7, 2019, 10:18am

PR is made :

And doc is here

Deltakosh · November 7, 2019, 3:27pm

And you rock!

thanks a ton!

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AxisScaleGizmo API: provide drag strength sensitivity scalar

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