Away3D Forum How to calculate direction vector of camera looking from aerial view?

How to calculate direction vector of camera looking from aerial view? Software: Away3D 4.x

Rajneesh, Jr. Member Posted: 27 June 2014 12:09 PM Total Posts: 34 I have camera looking at an object from aerial view. I want to go nearer to that object as I rotate mouse wheel. I tried it using lens like so, `private function onMouseWheelEvent(e:MouseEvent):void { PerspectiveLens(view.camera.lens).fieldOfView -= e.delta; }` But it is binocular effect. I need that camera change it position along its viewing direction vector. How to get this vector. Help please.
Fabrice Closier, Administrator Posted: 27 June 2014 12:20 PM Total Posts: 1265 [ # 1 ] Use camera.forward vector and multiply each components by a value extrapolated from your onMouseWheelEvent delta value. Like camera.x = camera.x+(someDistanceExtrapolatedFromMouseDelta*forwardVector.x);
Rajneesh, Jr. Member Posted: 27 June 2014 12:48 PM Total Posts: 34 [ # 2 ] Thanks Fabrice for your quick help. It worked. I did it like so, `view.camera.x = view.camera.x+(e.deltaview.camera.forwardVector.x); view.camera.y = view.camera.y+(e.deltaview.camera.forwardVector.y); view.camera.z = view.camera.z+(e.delta*view.camera.forwardVector.z);`
Fabrice Closier, Administrator Posted: 27 June 2014 01:35 PM Total Posts: 1265 [ # 3 ] Glad it helped, tho I’ve used “someDistanceExtrapolatedFromMouseDelta” in my example, because depending on platform and your scenery scale, you probably need to adjust the increase (you do not want force your users to scroll a lot to move a little or vice versa).

How would you?? ››

‹‹ View3D HitArea perhaps a BUG.

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