Flexible Camera class

Class camera <br/>{< br/> Public: <br/> Enum cameratype <br/>{< br/> landobject, Aircraft <br/> }; <br/> camera (); <br/> camera (cameratype); <br/> ~ Camera (); <br/> void strafe (float units); // left/right; <br/> void fly (float units); // up/down; <br/> void walk (float units); // forward/backward; <br/> void pitch (float angle); // rotate on right vector; <br/> void yaw (float angle); // rotate on up vector; <br/> void roll (float angle); // rotate on look vector; <br/> void getviewmatrix (d3dxmatrix * V); <br/> void setcameratype (cameratype); <br/> void getposition (d3dxvector3 * POS ); <br/> void setposition (d3dxvector3 * POS); <br/> void getright (d3dxvector3 * right); <br/> void getup (d3dxvector3 * up ); <br/> void getlook (d3dxvector3 * Look); <br/> PRIVATE: <br/> cameratype _ cameratype; <br/> d3dxvector3 _ right; <br/> d3dxvector3 _ up; <br/> d3dxvector3 _ Look; <br/> d3dxvector3 _ Pos; <br/>}; <br/> void camera :: getviewmatrix (d3dxmatrix * V) <br/>{< br/> // keep camera's axes orthogonal to eachother <br/> d3dxvec3normalize (& _ Look, & _ Look ); <br/> d3dxvec3cross (& _ up, & _ Look, & _ right); <br/> d3dxvec3normalize (& _ up, & _ up ); </P> <p> d3dxvec3cross (& _ right, & _ up, & _ Look); <br/> d3dxvec3normalize (& _ right, & _ right ); <br/> // build the view matrix: <br/> float x =-d3dxvec3dot (& _ right, & _ POS ); <br/> float y =-d3dxvec3dot (& _ up, & _ POS); <br/> float Z =-d3dxvec3dot (& _ Look, & _ POS ); <br/> (* V) (0, 0) = _ right. x; <br/> (* V) (0, 1) = _ up. x; <br/> (* V) (0, 2) = _ look. x; <br/> (* V) (0, 3) = 0.0f; <br/> (* V) (1, 0) = _ right. y; <br/> (* V) (1, 1) = _ up. y; <br/> (* V) (1, 2) = _ look. y; <br/> (* V) (1, 3) = 0.0f; <br/> (* V) (2, 0) = _ right. z; <br/> (* V) (2, 1) = _ up. z; <br/> (* V) (2, 2) = _ look. z; <br/> (* V) (2, 3) = 0.0f; <br/> (* V) (3, 0) = x; <br/> (* V) (3, 1) = y; <br/> (* V) (3, 2) = z; <br/> (* V) (3, 3) = 1.0f; <br/>}< br/> void camera: pitch (& T, & _ right, angle) <br/>{< br/> d3dxmatrix t; <br/> d3dxmatrixrotationaxis (& T, & _ right, angle ); <br/> // rotate _ up and _ Look around _ right vector <br/> d3dxvec3transformcoord (& _ up, & _ up, & T ); <br/> d3dxvec3transformcoord (& _ Look, & _ Look, & T); <br/>}< br/> void camera: yaw (float angle) <br/> {<br/> d3dxmatrix t; <br/> // rotate around World Y (0, 1, 0) always for land object <br/> If (_ cameratype = landobject) <br/> d3dxmatrixrotationy (& T, angle ); </P> <p> // rotate around own up vector for Aircraft <br/> If (_ cameratype = aircraft) <br/> d3dxmatrixrotationaxis (& T, & _ up, angle); <br/> // rotate _ Right and _ Look around _ up or Y-axis <br/> d3dxvec3transformcoord (& _ right, & _ right, & T); <br/> d3dxvec3trandformcoord (& _ Look, & _ Look, & T); <br/>}< br/> void camera: Roll (float angle) <br/>{< br/> // only roll for aircraft type <br/> If (_ cameratype = aircraft) <br/>{< br/> d3dxmatrix T; <br/> d3dxmatrixrotationaxis (& T, & _ Look, angle ); <br/> // rotate _ up and _ right around _ Look vector <br/> d3dxvec3transformcoord (& _ right, & _ right, & T ); <br/> d3dxvec3transformcoord (& _ Look, & _ Look, & T); <br/>}< br/> void camera :: walk (float units) <br/>{< br/> // move only on xz plane for land object <br/> If (_ cameratype = landobject) <br/> _ POS + = d3dxcector3 (_ look. x, 0.0f, _ look. z) * units; <br/> If (_ cameratype = aircraft) <br/> _ POS + = _ look * units; <br/>}< br/> void camera: strafe (float units) <br/> {<br/> // move only on xz plane for land object <br/> If (_ cameratype = landobject) <br/> _ POS + = d3dxvector3 (_ right. x, 0.0f, _ right. z) * units; <br/> If (_ cameratype = aircraft) <br/> _ POS + = _ right * units; <br/>}< br/> void camera: Fly (float units) <br/> {<br/> // move only on Y-axis for land object <br/> If (_ cameratype = landobject) <br/> _ POS. Y + = units; <br/> If (_ cameratype = aircrafe) <br/> _ POS + = _ up * units; <br/>}