Irrlicht Engine

M(xaxis,yaxis,zaxis) * Inverse（M(xaxis,yaxis,zaxis)）=E
M(xaxis,yaxis,zaxis) * Transpose(M(xaxis,yaxis,zaxis) )=E
so:
Inverse（M(xaxis,yaxis,zaxis)）=Transpose(M(xaxis,yaxis,zaxis) )

CameraLookAtMatrixRH=M(xaxis,yaxis,zaxis)*M(-position) (right multiply)

so:
Inverse(CameraLookAtMatrixRH)=M(position ...

I need Inverse of view matrix (right-handed look-at matrix) for screen pick,but irrlicht's matrix only have matrix4::buildCameraLookAtMatrixRH(),no it's inverse matrix. so I write a inverse matrix,is right??

(*this)(0,0) = xaxis.X;
(*this)(1,0) = xaxis.Y;
(*this)(2,0) = xaxis.Z;
(*this)(3,0 ...

I use createDeviceEx in CIrrMFCTestView::OnCreate(), use smgr->drawAll() in CIrrMFCTestView::OnDraw(CDC* pDC)
but it isn't working! why?? please tell me,thank you!

after 4 days of debug, I have discovered that OnDraw() function is called in 4 case:
-before the mainframe is created
-after the ...

I create irr device in CMyView:: OnInitialUpdate()

now it is working !! and I have know why not in OnCreate()

I render scene in CMyView:: OnDraw() not in CApp::Run() ,but working！

thank you again!!

thank you very much!!

i write windows with irrlicht is working ,but use mfc isn't working !!

I don't know why

I use createDeviceEx in CIrrMFCTestView::OnCreate(), use smgr->drawAll() in CIrrMFCTestView::OnDraw(CDC* pDC)

but it isn't working! why?? please tell me,thank you!