See this thread:

https://developer.vuforia.com/forum/rendering-opengl-es/camera-clipping-z-planes-and-projection-matrix

..and also do a search for "clip"

N

hi NalinS !

I don't know where to use function setARProjection and how.

Can you help me ?

Hi varun1.mehta, I believe monke99 was just referring to walking away from the target, phone in his hand, not to other type of zooming (check beginning of post).

Hey Monke99, Have you implemented zoom in/out functionality for Multitarget Sample for Vuforia iOS? Please revert back with answer if you have implemented.

thank you so much... the problem has been solved.

thank you !!

Hi firstlook

You might want to try this function:

    virtual void setARProjection(float nearPlane, float farPlane) = 0;

which is in Renderer.h and is part of the renderer class.

N

I am using native.

I am using both platform. IOS, Android...

Thank you

Which SDK are you using Unity or native?

Which platform are you using iOS or Android?

N

can you tell me how to extend the distance of your far clip plane ?

I searched the web , but coudn't find the way to extend the distance of your far clip plane.

thank you.

Which Vuforia SDK are you using?

Does it appear that the augmentation is sinking into the target? If so, try extending the distance of your far clip plane. Also there is a maximum distance for tracking, after which the apparent details of the image are insufficent to be detected any longer.

1. OK rendering. 

 http://firstlookapi.machfactory.kr/image.png

2. when I walk away from trackable it starts to disappear.

http://firstlookapi.machfactory.kr/image_1.png

3. when I walk away more , it has disappeared...

 http://firstlookapi.machfactory.kr/image_2.png

thank you for reading..

How small is the target when it disappears?

Can you post a screen shot with and without?

N

I mean i walk away from trackable .

phone in my hand.. 

i

Hi monke99

When you say you "zoom out", do you mean within the application? or by moving the phone further away?

N