# chris.sermanni

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1. ## how to Rotate Model

Hi every one ... i want to rotate my 3dmodel in roll-pitch-yaw axis i have just axis(x,y,z) vector and up(x,y,z) vector so how to rotate my model by axis(x,y,z) vector + up(x,y,z) vector values? please lookout my simple code... D3DXVECTOR3 * axis=new D3DXVECTOR3; axis->x = -0.14; axis->y = -0.99; axis->z = -0.04; D3DXVECTOR3 * up=new D3DXVECTOR3; up->x = -0.99; up->y = 0.14; up->z = 0.07; D3DXMATRIXA16 mWorld; /////////////////////////////////////////////////////////////////// D3DXMatrixLookAtLH(&mWorld,g_Camera.GetEyePt(),axis,up); //////////////////////////////////////////////////////////////////// mWorld *= *g_Camera.GetWorldMatrix(); D3DXMATRIXA16 mProj; mProj = *g_Camera.GetProjMatrix(); D3DXMATRIXA16 mView; mView = *g_Camera.GetViewMatrix(); D3DXMATRIXA16 mWorldViewProjection; mWorldViewProjection = mWorld * mView * mProj; V( g_pEffect9->SetMatrix( g_hmWorldViewProjection, &mWorldViewProjection ) ); is there any way or formula to convert : [size="1"]axis(x,y,z) & up(x,y,z) vectors to (roll - pitch - yaw) ? also you know we need use "axis" and "up" vector both together to calculate. because in some direction of y we must change place of x value by z ....
2. ## Rotate Model

[size="4"] is there any way or formula to convert : [size="5"]axis(x,y,z) & up(x,y,z) vectors to (roll - pitch - yaw) ? also you know we need use "axis" and "up" vector both together to calculate. because in some direction of y we must change place of x value by z ....
3. ## Rotate Model

thanks for your answer Molle85 can you please show me how to use it ? i try to do it myself but model not rotate in a true direction.... D3DXVECTOR3 * axis=new D3DXVECTOR3; axis->x = -0.14; axis->y = -0.99; axis->z = -0.04; D3DXVECTOR3 * up=new D3DXVECTOR3; up->x = -0.99; up->y = 0.14; up->z = 0.07; D3DXMATRIXA16 mWorld; /////////////////////////////////////////////////////////////////// D3DXMatrixLookAtLH(&mWorld,g_Camera.GetEyePt(),axis,up); //////////////////////////////////////////////////////////////////// mWorld *= *g_Camera.GetWorldMatrix(); D3DXMATRIXA16 mProj; mProj = *g_Camera.GetProjMatrix(); D3DXMATRIXA16 mView; mView = *g_Camera.GetViewMatrix(); D3DXMATRIXA16 mWorldViewProjection; mWorldViewProjection = mWorld * mView * mProj; V( g_pEffect9->SetMatrix( g_hmWorldViewProjection, &mWorldViewProjection ) );
4. ## Rotate Model

Hi every one ... i want to rotate my 3dmodel in roll-pitch-yaw axis i have just axis(x,y,z) vector and up(x,y,z) vector so how to rotate my model by axis(x,y,z) vector + up(x,y,z) vector values? please lookout my simple code... D3DXVECTOR3 * axis=new D3DXVECTOR3; axis->x = -0.14; axis->y = -0.99; axis->z = -0.04; D3DXVECTOR3 * up=new D3DXVECTOR3; up->x = -0.99; up->y = 0.14; up->z = 0.07; D3DXMATRIXA16 mWorld; /////////////////////////////////////////////////////////////////// D3DXMatrixRotationAxis(&mWorld,axis,180); //is true ? D3DXMatrixRotationAxis(&mWorld,up,180); // is true ? //////////////////////////////////////////////////////////////////// mWorld *= *g_Camera.GetWorldMatrix(); D3DXMATRIXA16 mProj; mProj = *g_Camera.GetProjMatrix(); D3DXMATRIXA16 mView; mView = *g_Camera.GetViewMatrix(); D3DXMATRIXA16 mWorldViewProjection; mWorldViewProjection = mWorld * mView * mProj; V( g_pEffect9->SetMatrix( g_hmWorldViewProjection, &mWorldViewProjection ) );