Zoom to elements

[ashish-srivastava1]

I am using the zoomToElements API and setting the marginPercent in ViewChangeOptions parameter. The zoom operation should not get too close to the element in the viewer, that's why I am using the marginPercent. But it doesn't seem to work?

Are there other options to avoid zooming too close to an element in the viewer?

[pmconne]

Please define "doesn't work".

[bbastings]

You could try getting the element's range and either expand the range yourself, or supply the margin to "lookAtViewAlignedVolume".

note: marginPercent is no longer part of ViewChangeOptions in 3.0, it's moved to a "MarginOptions" that can be supplied to the lookAt methods.

[ashish-srivastava1]

Please define "doesn't work".

I tried the following code (iTwinjs version: 2.19.0).

const viewChangeOpts: ViewChangeOptions = {}; viewChangeOpts.animateFrustumChange = true; viewChangeOpts.marginPercent = new MarginPercent(50, 50, 50, 50); const vp = IModelApp.viewManager.selectedView!; await vp.zoomToElements(zoomElementId, { ...viewChangeOpts });

Whether I use or don't use marginPerecent property, the zoom result is same in both cases in my app.

I used marginPercent to leave 50% view blank around the edges. So this is not happening.

[kabentley]

is the camera enabled? MarginPercent isn't applied when the camera is enabled.