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please help-me

Started by jeppa Nov 26, 2003 at 1:06 PM 3 replies 1.2k views

Original Post

Nov 26, 2003 at 1:06 PM

hi! I would want make a editor for my engine with the classic 4 view like Lightwave and so on.I would want load my object into this editor and diplay it into this 4 different view.someone know to make this 4 view and the way to draw into this view?? sorry for my bad english...

Thanks Sandro

Kurioes

Nov 26, 2003 at 1:10 PM

NeHe's Tutorials, Lesson 42 shows a way to do this in OpenGL.

Read NeHe's OpenGL Tutorials if you want to learn how to use OpenGL.

[ Bananas | My dead site | www.sgi.com | Goegel ]

[edited by - Kurioes on November 26, 2003 2:50:06 PM]

hplus0603

Nov 26, 2003 at 1:56 PM

That depends entirely on your API. Typically, you''ll draw the object 4 times, with 4 different positions/transformations.

Typically, on OpenGL, it might look something like:

glViewport( 0, 0, WIDTH/2, HEIGHT/2 );
glClear(...);
glLoadMatrix( whateverViewForViewport0 );
DrawMyObjects();

glViewport( WIDTH/2, 0, WIDTH, HEIGHT/2 );
glClear(...);
glLoadMatrix( whateverViewForViewport0 );
DrawMyObjects();

glViewport( 0, HEIGHT/2, WIDTH/2, HEIGHT );
glClear(...);
glLoadMatrix( whateverViewForViewport0 );
DrawMyObjects();

glViewport( WIDTH/2, HEIGHT/2, WIDTH, HEIGHT );
glClear(...);
glLoadMatrix( whateverViewForViewport0 );
DrawMyObjects();

Newfound Ajarn

Nov 26, 2003 at 2:02 PM

Thefour whateverViewForViewport0 should be

whateverViewForViewport0
whateverViewForViewport1
whateverViewForViewport2
whateverViewForViewport3

stephenfx

Nov 26, 2003 at 7:58 PM

You can use glFrustum() build a perspective matrix for the perspective view, and use glOrtho() for others, they are all orthographic view. The cameras of the 4 view are the same math, you can use gluLookat(),etc.

Hope this help.

[edited by - stephenfx on November 26, 2003 9:11:22 PM]

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