solved How to limit Camera's Zoom and change it's Direction ?

[Ariel Yust]

camera.lowerAlphaLimit;camera.upperAlphaLimit;camera.lowerBetaLimit;camera.upperBetaLimit;

I know these guys handle the bounding angles for the camera's angles on the azimuth and elevation (took me a while finding this out!),

but how about zoom ?

 

1) I want to disable or limit the zoom on the camera (the one you have when using wheel up/down) how do I do that ?

 

2) also, how do I invert the direction that the camera moves when I drag the mouse on screen ?

 

I mean right now I hold the mouse key and drag right and the camera turns right... it should turn left, like every touch interface in the world 

do I need to go into babylon.js and change it manually, or is there something I don't know about ?

 

Thanks for the help ! 

[Temechon]

Hi Ariel, 

 

To limit the camera zoom, you can use this : 

if (camera.radius > 70)    camera.radius = 70;if (camera.radius < 5)    camera.radius = 5;

[GameMonetize]

You can also use:

camera.lowerRadiusLimit

camera.upperRadiusLimit

[Ariel Yust]

Or I can use both and do this:
 

camera.lowerRadiusLimit = camera.upperRadiusLimit = camera.radius;

Muhahaha 

 

actualy it does zoom in abit for less then a second and then get back to the original zoom, I guess a fix should be made ?

I didn't put it in a loop, just assigned it once;

[Ariel Yust]

sooo.... no one answered this:

 

how do I invert the direction the camera moves when I drag the mouse on screen ?

 

dragging mouse left should move pin camera right and vise verse...

 

how to achieve that ?

[GameMonetize]

You have to update the code of the ArcRotateCamera if you are not happy with its default behavior

 

Or better way: create a new camera that inherits from ArcRotatecamera and just update the function which is responsible for the movement

[Ariel Yust]

Later option seems more practical, thanks I'll try that and share my results!

 

it might take a while because I'm dealing with other issues in the code =]

[Kev]

In case anyone else finds this while looking for a way to disable the zoom on ArcRotateCamera.
 

canvas.removeEventListener('mousewheel', camera._wheel);canvas.removeEventListener('DOMMouseScroll', camera._wheel); 

Re-adding is as simple as doing the reverse with addEventListener.

[Gerente]

1) I want to disable or limit the zoom on the camera (the one you have when using wheel up/down) how do I do that ?

 

camera.lowerRadiusLimit = camera.upperRadiusLimit = camera.radius = 1;  

2) also, how do I invert the direction that the camera moves when I drag the mouse on screen ?

var camera = new BABYLON.ArcRotateCamera("Camera", 1 , Math.PI / 2, 1, BABYLON.Vector3.Zero(), scene);        camera.attachControl(canvas, true);    camera.fov = 90;//Invert rotation of the camera by dragging the mousecamera.angularSensibility = -5000;

[iiceman]

Hehee... I realized that today, too, when I answered on another topic that you can use a negative angular sensibility to invert the movement ... did you read the other topic or was it just a coincidence that we both find this today? 

[Gerente]

I was looking something else in the forum and I stoped in your post, and, since I just solve that today I decide to share it. Coincidence I guess.

[rgalindox]

Hi, in which part of the code should I add the camera limits for the zoom? or when it is triggered?

Thanks

[GameMonetize]

You can do it right after creating the camera. It will be trigger on every mouse wheel

[rgalindox]

Thanks!

[maxxcan]

Thank you very much!! I need this

[shahrukh4]

On 12/16/2013 at 8:43 PM, Deltakosh said:

You can also use:

camera.lowerRadiusLimit

camera.upperRadiusLimit

Thanks for the help, I was struggling from days for doing this.