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Objects stretched at screen edges

Started by Derek Baker Oct 7, 2004 at 1:43 PM 4 replies 1.1k views

Original Post

Oct 7, 2004 at 1:43 PM

When I change the pitch and yaw of my camera, my object gets stretched as it approaches the edges of my window.

   	D3DXMATRIX T,YPR;;
	D3DXMatrixRotationYawPitchRoll(&YPR, Yaw, Pitch, Roll);
 	D3DXMatrixTranslation(&T, 0.0f, 0.0f, 0.0f);
	
 	D3DXMATRIX View = T* YPR;
 	
  	pD3DDevice->SetTransform(D3DTS_VIEW, &View);


D3DXMATRIX Proj;
 	
	D3DXMatrixPerspectiveFovLH(&Proj, D3DX_PI * 0.5f ,(float)cxClient/ cyClient, 
								1.0f, 1000.0f);
	
	pD3DDevice->SetTransform(D3DTS_PROJECTION, &Proj);

I'm sure it's something very obvious, but I've only been programming DX for a few days. Thanks in advance Derek

wendigo23

Oct 7, 2004 at 2:09 PM

Perspective projection stretches things. It's normal.

Derek Baker

Author

Derek Baker

Oct 7, 2004 at 2:31 PM

Thanks for the reply, but what I'm seeing here doesn't match what I see in any 3d game.

Derek

Helius

Oct 7, 2004 at 2:43 PM

Try reducing your FOV.

Notice that with a high FOV more (stretched) objects are seen in the scene.

circlesoft

101

circlesoft

Oct 7, 2004 at 3:44 PM

A normal FOV is PI / 4. Like this:

D3DXMatrixPerspectiveFovLH(&Proj, D3DX_PI / 4.0f,(float)cxClient/ cyClient, 1.0f, 1000.0f);

Derek Baker

Author

Derek Baker

Oct 7, 2004 at 4:12 PM

Thanks guys.

Derek

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