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C-/C++-Quelltext

D3DXMATRIXA16 matProj;
tbDirect3D::GetDevice()->GetTransform( D3DTS_PROJECTION, &matProj );

tbVector2 CursorPosition= m_pGUI->GetCursorPos();
        
POINT ptCursor;
ptCursor.x =  CursorPosition.x;
ptCursor.y =  CursorPosition.y;
ScreenToClient( tbDirect3D::GetWindow(), &ptCursor );

// Compute the vector of the pick ray in screen space

D3DXVECTOR3 v;
v.x =  ( ( ( 2.0f * ptCursor.x ) / m_d3dsdBackBuffer.Width  ) - 1 ) / matProj._11;
v.y = -( ( ( 2.0f * ptCursor.y ) / m_d3dsdBackBuffer.Height ) - 1 ) / matProj._22;
v.z =  1.0f;

 // Get the inverse view matrix

D3DXMATRIXA16 matView;
tbDirect3D::GetDevice()->GetTransform( D3DTS_VIEW, &matView );
m=tbMatrixInvert( matView );

// Transform the screen space pick ray into 3D space

vPickRayDir.x  = v.x*m.m11 + v.y*m.m21 + v.z*m.m31;
vPickRayDir.y  = v.x*m.m12 + v.y*m.m22 + v.z*m.m32;
vPickRayDir.z  = v.x*m.m13 + v.y*m.m23 + v.z*m.m33;
vPickRayOrig.x = m.m41;
vPickRayOrig.y = m.m42;
vPickRayOrig.z = m.m43;

C-/C++-Quelltext

if(tbLineHitsModel(vPickRayOrig,vPickRayDir,BallModel,tbMatrixIdentity(),tbMatrixIdentity() ) )
{
g_pSpiel->m_pFont2->Begin();
g_pSpiel->m_pFont2->DrawText(tbVector2(0.5f, 0.05f),"Treffer", TB_FF_ALIGN_HLEFT | TB_FF_ALIGN_VCENTER | TB_FF_RELATIVE | TB_FF_RELATIVESCALING);
g_pSpiel->m_pFont2->End();
}