Camera/model rotation help !
Author
I just cannot get my camera to point the way to the model as i want...
At the moment my camera is UNDER my character and if i adjust the up , eye and look at values it just does weird stuff...
i want to rotate my model and look at it from the side and upright.like a platform game walking char.
this is my matrixes..help me please
/ Sets up the camera 1000 units back looking at the origin.
D3DXMATRIX V;
D3DXMatrixIdentity(&V);
D3DXVECTOR3 pos(0.0f, 0.0f, -1000.0f);
D3DXVECTOR3 up(0.0f, 1.0f, 0.0f); //to rotate VIEW ANGLE
D3DXVECTOR3 target(0.0f, 0.0f, 0.0f);
D3DXMatrixLookAtLH( &V, &pos, &target, &up );
//FOR SOME REASON THIS DOES NOT WORK ???
//This makes the model rotate Y
//D3DXMatrixRotationY( &V, D3DXToRadian(fAngle));
//This makes the model rotate X
//D3DXMatrixRotationX( &V, D3DXToRadian(fAngle2));
//This makes the model rotate Z
//D3DXMatrixRotationZ( &V, D3DXToRadian(fAngle3));
HR(gd3dDevice->SetTransform(D3DTS_WORLD, &V));
HR(gd3dDevice->SetTransform(D3DTS_VIEW, &V));
The middel part of code has no response what so ever.. any clues ?? even id i adjust the angles...
Quote:The middel part of code has no response what so ever.. any clues ??
Could it be because the middle part is completely commented out? Or is that post-op?
D3DXMatrixRotationY(), D3DXMatrixRotationX(), and D3DXMatrixRotationZ() replace the contents of the matrix you pass to them.
You need to multiply/concatenate the matrices:
Beware that matrix multiplication isn't commutative (A*B will give a different result to B*A) so you may need to reverse the order of the last two arguments for each D3DXMatrixMultiply() depending on what you're trying to achieve.
You need to multiply/concatenate the matrices:
D3DXMATRIX v;D3DXMatrixLookAtLH( &v, &pos, &target, &up );D3DXMATRIX temp;D3DXMatrixRotationY( &temp, D3DXToRadian(fAngle));D3DXMatrixMultiply( &v, &v, &temp );D3DXMatrixRotationX( &temp, D3DXToRadian(fAngle2));D3DXMatrixMultiply( &v, &v, &temp );D3DXMatrixRotationZ( &temp, D3DXToRadian(fAngle3));D3DXMatrixMultiply( &v, &v, &temp );Beware that matrix multiplication isn't commutative (A*B will give a different result to B*A) so you may need to reverse the order of the last two arguments for each D3DXMatrixMultiply() depending on what you're trying to achieve.
Author
EXCELLENT ! thanks , i had NO IDEA the matrix was being replaced , thanks a million ! works like a charm now ! :)
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