Problem rendering while changing FOV

Software: Away3D 4.x

Romanzo Criminale, Newbie
Posted: 22 August 2013 06:28 AM   Total Posts: 4

Hi everyone,

I have a pretty basic code, rendering a wire frame. I setup one perspective camera looking at the grid. But when I’m changing the FOV of my camera to a high angle, some part of the grid are disappearing in the rendering stage.
I’m not sure if it’s a bug or not. I tried to go to the source code but as I’m pretty new with away3d, it didn’t help me much!
I attached some pictures to show the problem. For a FOV of 102 degrees, the grid is well displayed but for 103 and 160 some problem appear.

Here is also my code to setup the grid and the view3D

//setup the viewA
viewA = new View3D()
scene = new Scene3D(); 
cameraA = new Camera3D();
viewA.scene scene; cameraA; "A"; = new PerspectiveLens(160);[
.camera.;; new Vector3D()); 
grid = new WireframePlane(1000100010100xFFFFFF1"xz")

Thanks for your help!


Image Attachments

theMightyAtom, Sr. Member
Posted: 22 August 2013 07:44 AM   Total Posts: 669   [ # 1 ]

Make sure the parameter is set to a high enough number. This is the limit of how far from the camera is rendered.

Good Luck!


Romanzo Criminale, Newbie
Posted: 22 August 2013 07:59 AM   Total Posts: 4   [ # 2 ]

Thanks for the answer but i already tried to set it to a high number (100000) and it didn’t changed anything!


theMightyAtom, Sr. Member
Posted: 22 August 2013 08:26 AM   Total Posts: 669   [ # 3 ]

What happens if you increase the thickness of the wire ?


Romanzo Criminale, Newbie
Posted: 22 August 2013 11:12 PM   Total Posts: 4   [ # 4 ]

It’s working! Thanks! I was expecting something more complicated!
Is it because when the perspective projection is computed some of line are then smaller than one pixel thick?

Thanks again


theMightyAtom, Sr. Member
Posted: 23 August 2013 05:31 AM   Total Posts: 669   [ # 5 ]

Great! The next thing I was going to suggest, was trying to adjust you anti-alias setting. This makes an average of several pixels, and *may* make your thinner lines visible as well.



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