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Billboarding

Started by EvilDazze Jan 19, 2003 at 6:29 PM 1 replies 650+ views

Original Post

Jan 19, 2003 at 6:29 PM

I try to use billboarding, but it won´t get right. Here is my code where I change the world matrix:

  
D3DXMATRIX matWorld,matView,matTransposed,matTrans,matScale;
D3DXMatrixScaling(&matScale,1,1,1);
D3DXMatrixTranslation(&matTrans,0,0,0);	
D3DDevice->GetTransform(D3DTS_VIEW,&matView);
D3DXMatrixTranspose(&matTransposed,&matView);
D3DXMatrixMultiply(&matWorld,&matScale,&matTransposed);
D3DXMatrixMultiply(&matWorld,&matWorld,&matTrans);
D3DDevice->SetTransform(D3DTS_WORLD,&matWorld);

But my quad seems to get distorted, what´s wrong?? [edited by - EvilDazze on January 19, 2003 7:31:15 PM]

mickey

Jan 20, 2003 at 10:00 AM

probably vertex positions(xyz)? tu/tv? order of multiplying the matrices?

Yratelev

Jan 20, 2003 at 10:18 AM

Just to be 100% safe, initialize all your matrices as identity matrices

Yratelev

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