Im using Directx to Move my Object and i have a problem my objects rotates Weird. Does it differ which Matrix i multiply first? MatoWorld=MatWorld*Translation MatWorld=MatWorld*MatPitch MatWorld=MatWorld*MatYaw MatWorld=MatWorld*MatRoll in this order only the Roll and Translation work fine but the other 2 end up rotating on the World Axis not the Axis i made I traced my axis Vecotors to see if the where moving with the object and they where. I tryed changing the order i multiply and tracing MatWorld i end up with diff matrices for each. They Supposed to be Equal but they aint. anyways thxs

The order matters

Try Yaw, Pitch, Roll, Translation

didnt make a diff now the YAw works good but the rest dont

Roll, Yaw, Pitch, Translate.

Later,
ZE.

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EDITed for a nasty lil' error

[edited by - zealouselixir on March 19, 2002 11:30:30 PM]

lol that didnt work either
heres my code


D3DXMATRIX matWorld,matTran;
D3DXMatrixTranslation(&matTran, m_oFighter.vPos.x, m_oFighter.vPos.y, m_oFighter.vPos.z);
D3DXMatrixMultiply( &matWorld, &matRoll, &matWorld );
D3DXMatrixMultiply( &matWorld, &matPitch, &matWorld );
D3DXMatrixMultiply( &matWorld, &matYaw, &matWorld );

matWorld=matWorld*matTran;

Use this function to make your rotation matrix, instead of making a Yaw, pitch, and roll and then multiplying.

D3DXMatrixRotationYawPitchRoll

Domini
Rastagon 2 Engine

Looks like you never setup the matWorld matrix before you start using it...I''m guessing you setup the yaw/roll/pitch right too..



D3DXMATRIX matWorld,matTran;

D3DXMatrixIdentity (&matWorld);
D3DXMatrixTranslation(&matTran, m_oFighter.vPos.x, m_oFighter.vPos.y, m_oFighter.vPos.z);
D3DXMatrixMultiply( &matWorld, &matRoll, &matWorld );
D3DXMatrixMultiply( &matWorld, &matPitch, &matWorld );
D3DXMatrixMultiply( &matWorld, &matYaw, &matWorld );
D3DXMatrixMultiply( &matWorld, &matTran, &matWorld );

i fixed my problem i initilaized the local axis in the Frame Move function instead of the OneTimeInit so it kept changing the axis to its first coordinates. talk about dumb lol