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question about matrices

Started by Bino Sep 10, 2000 at 9:18 PM 4 replies 250+ views

Original Post

Sep 10, 2000 at 9:18 PM

If I have a 4x4 translation matrix like this: float translateMatrix[4][4] = {{ 1.0, 0.0, 0.0, 5.0 }, { 0.0, 1.0, 0.0, 3.0 }, { 0.0, 0.0, 1.0, 0.0 }, { 0.0, 0.0, 0.0, 1.0 }}; What do I do after that. I''m using OpenGL so should I use the MultMatrix function or a for loop? What do I do and how do I do it?

Bino

Author

Bino

Sep 11, 2000 at 6:09 PM

c''mon I know someone on this board can help me!?

baskuenen

Sep 11, 2000 at 8:55 PM

I''m sorry, but I don''t exactly understand your question. Could you rephrase it?

Do you want to multiply this matrix with another?

(ps: I bet more people on this board will be able to answer this

)

Bino

Author

Bino

Sep 11, 2000 at 9:43 PM

I wanna know what I have to do to translate my object using that matrix. p.s. This is my first time using matrices.

baskuenen

Sep 12, 2000 at 2:32 PM

    
glMultMatrixf(translateMatrix);

If you still don''t have a good help reference for OpenGL, you should get one! It''s unmissable. Also some good examples will help you...check out NeHe orso...

Bino

Author

Bino

Sep 12, 2000 at 4:11 PM

I found out what was wrong. I had my coordinates lined up wrong. They should have been going across, so that bottom row should look like this { 5.0, 3.0, 0.0, 1.0 }};

But thanks anyway,
Bino

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