Objects disappear after Z-120[solved]

Graphics and GPU Programming Programming

Started by Yhonatan June 25, 2008 03:30 PM

5 comments, last by Yhonatan 15 years, 10 months ago

115

Author

June 25, 2008 03:30 PM

Hey all. There is something I have recently noticed - when an object is moving on the Z axis - after it reaches a certain number (I think it is -120) the object disappears. Is there any way to increase this number to -200 or to any other number? Thanks in advance [Edited by - Yhonatan on June 25, 2008 3:59:07 PM]

Mike nl

390

June 25, 2008 03:32 PM

Although we could use more info, first thought is the far clipping plane. Try increasing the z_far distance. Found in the projection matrix.

Million-to-one chances occur nine times out of ten!

Yhonatan

115

Author

June 25, 2008 03:38 PM

Quote:Original post by Mike nl
Although we could use more info, first thought is the far clipping plane. Try increasing the z_far distance. Found in the projection matrix.

Thanks, I think that's it, but can you please give me some more information on how doing this? I was searching the web and didnt find anything

Yhonatan

115

Author

June 25, 2008 03:41 PM

i found out how!!!!!!1
thanks!

MARS_999

1,627

June 25, 2008 03:42 PM

glOrtho(left, right, bottom, top, zNear, zFar)
glOrtho(left, right, bottom, top, 1.0, 1000.0)

or if you are using Perspective projection

void gluPerspective(fovy, aspect, zNear, zFar)
gluPerspective(fovy, aspect, 1.0, 1000.0)

Yhonatan

115

Author

June 25, 2008 03:44 PM

Quote:Original post by MARS_999
glOrtho(left, right, bottom, top, zNear, zFar)
glOrtho(left, right, bottom, top, 1.0, 1000.0)

or if you are using Perspective projection

void gluPerspective(fovy, aspect, zNear, zFar)
gluPerspective(fovy, aspect, 1.0, 1000.0)

for some reason it didnt work

glMatrixMode( GL_PROJECTION );
glLoadIdentity( );
gluPerspective( 45.0, ratio, 0.1, 11450.0 );