Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

D3DXComputeBoundingBox problem

Posted on 2002-07-22
3
Medium Priority
?
617 Views
Last Modified: 2013-12-08
has anyone had problems with this method - i am using directX 8 and trying to compute the bounding box from a file mesh.  I dont get any errors in the methods but the returned vector dimensions do not add up.

     LPDIRECT3DVERTEXBUFFER8 vertBuf = NULL;
     LPD3DXMESH m_pLocalMesh = NULL;
     BYTE* pVertices;

     device = dev;

     if (FAILED(frame.m_pMesh->Create( device, const_cast<LPSTR>(xFileName) )))
          return false;
     m_pLocalMesh = frame.m_pMesh->GetSysMemMesh();
     DWORD fvf = m_pLocalMesh->GetFVF();
     DWORD numVert = m_pLocalMesh->GetNumVertices();
     
     HRESULT hr = m_pLocalMesh->GetVertexBuffer(&vertBuf);
     if (FAILED(hr)) MessageBox(NULL,"BAD","BAD",MB_OK);
     
     hr = vertBuf->Lock(0,0,&pVertices,D3DLOCK_NOSYSLOCK );
     if (FAILED(hr)) MessageBox(NULL,"BOX BAD", " BOX BAD",MB_OK);
     // compute the bounding box //
     hr = D3DXComputeBoundingBox(pVertices,numVert,fvf,&minVect,&maxVect);

this is my test code sample.
PS - minVect and maxVect are public vars D3DXVECTOR3
0
Comment
Question by:argVader
3 Comments
 
LVL 2

Accepted Solution

by:
kamarey earned 400 total points
ID: 7170338
Here is my code, it work perfect:

BYTE *pVertex;
D3DXVECTOR3 min;
D3DXVECTOR3 max;

m_pMesh->LockVertexBuffer(D3DLOCK_READONLY, (BYTE**)&pVertex);

D3DXComputeBoundingBox((VOID*)pVertex, m_pMesh->GetNumVertices(), m_pMesh->GetFVF(), &min, &max);

m_pMesh->UnlockVertexBuffer();

If your program still doesn't work, that meens you have wrong data in a vertex buffer.
0
 

Expert Comment

by:CleanupPing
ID: 9464750
argVader:
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

New feature and membership benefit!

New feature! Upgrade and increase expert visibility of your issues with Priority Questions.

Question has a verified solution.

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

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 …
Recently, in one of the tech-blogs I usually read, I saw a post about the best-selling video games through history. The first place in the list is for the classic, extremely addictive Tetris. Well, a long time ago, in a galaxy far far away, I was…
Exchange organizations may use the Journaling Agent of the Transport Service to archive messages going through Exchange. However, if the Transport Service is integrated with some email content management application (such as an anti-spam), the admin…
Is your data getting by on basic protection measures? In today’s climate of debilitating malware and ransomware—like WannaCry—that may not be enough. You need to establish more than basics, like a recovery plan that protects both data and endpoints.…
Suggested Courses
Course of the Month11 days, 16 hours left to enroll

916 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