Solved

direct 3d transform

Posted on 2002-03-09
4
442 Views
Last Modified: 2013-12-26
Hi!
i'm working with directx 8 and i wanna create a 3d app(c++).

for each object i wanna use, i store all rotations, all scales and all translations. (in each direction (x,y,z)).
so, when i want to render a object, i call

D3DXMatrixTransformation(&matworld,NULL,&t_rotations,&t_scales,NULL,NULL,&t_translations);

and just before rendering
dxmanager->lpd3ddev->SetTransform(D3DTS_WORLD, &matworld);

it seems to work when my object is only scales and/or translated, but when i try to rotate it... the scale doesn't work anymore...

pleeeaaase heeeeeelp!!

thanks, Ralph
0
Comment
Question by:ralph78
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 2

Accepted Solution

by:
kamarey earned 50 total points
ID: 6855124
Try this:
D3DXMatrixTransformation(&matworld,NULL,NULL,&t_scales,NULL,&t_rotations,&t_translations);

if it doesn't work use this functions to do your transformations:
D3DXMatrixRotationAxis(), D3DXMatrixScaling(), D3DXMatrixTranslation().
matrix = ms * mr * mt;
SetTransform(matrix);

If it still doesn't work place here your code.
0
 
LVL 2

Expert Comment

by:ET3D
ID: 6882654
You're using the wrong rotation parameter. I assume you want to rotate the object, in which case you should use the rotation and rotation centre parameters, not the "scaling rotation" which you're using in the code you posted.
0
 

Expert Comment

by:CleanupPing
ID: 9464551
ralph78:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1 
EXPERTS:
Post your closing recommendations!  No comment means you don't care.
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
candy crush 4 440
How do I hire a good copyright attorney? 3 137
CreateJS - animation being used is last one assigned 4 142
RTS - Should I pre-load all possible images? 2 83
What is RenderMan: RenderMan is a not any particular piece of software. RenderMan is an industry standard, defining set of rules that any rendering software should use, to be RenderMan-compliant. Pixar's RenderMan is a flagship implementation of …
Performance in games development is paramount: every microsecond counts to be able to do everything in less than 33ms (aiming at 16ms). C# foreach statement is one of the worst performance killers, and here I explain why.
Nobody understands Phishing better than an anti-spam company. That’s why we are providing Phishing Awareness Training to our customers. According to a report by Verizon, only 3% of targeted users report malicious emails to management. With compan…

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question