llviewercamera.h

Go to the documentation of this file.
00001 
00032 #ifndef LL_LLVIEWERCAMERA_H
00033 #define LL_LLVIEWERCAMERA_H
00034 
00035 #include "llcamera.h"
00036 #include "lltimer.h"
00037 #include "llstat.h"
00038 #include "m4math.h"
00039 
00040 class LLCoordGL;
00041 class LLViewerObject;
00042 
00043 // This rotation matrix moves the default OpenGL reference frame 
00044 // (-Z at, Y up) to Cory's favorite reference frame (X at, Z up)
00045 const F32 OGL_TO_CFR_ROTATION[16] = {  0.f,  0.f, -1.f,  0.f,   // -Z becomes X
00046                                                                           -1.f,  0.f,  0.f,  0.f,       // -X becomes Y
00047                                                                            0.f,  1.f,  0.f,  0.f,       //  Y becomes Z
00048                                                                            0.f,  0.f,  0.f,  1.f };
00049 
00050 class LLViewerCamera : public LLCamera
00051 {
00052 public:
00053         LLViewerCamera();
00054 
00055 //      const LLVector3 &getPositionAgent() const;
00056 //      const LLVector3d &getPositionGlobal() const;
00057 
00058         void updateCameraLocation(const LLVector3 &center,
00059                                                                 const LLVector3 &up_direction,
00060                                                                 const LLVector3 &point_of_interest);
00061 
00062         static void updateFrustumPlanes(LLCamera& camera, BOOL ortho = FALSE);
00063         void setPerspective(BOOL for_selection, S32 x, S32 y_from_bot, S32 width, S32 height, BOOL limit_select_distance, F32 z_near = 0, F32 z_far = 0);
00064 
00065         const LLMatrix4 &getProjection() const;
00066         const LLMatrix4 &getModelview() const;
00067 
00068         // Warning!  These assume the current global matrices are correct
00069         void projectScreenToPosAgent(const S32 screen_x, const S32 screen_y, LLVector3* pos_agent ) const;
00070         BOOL projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const BOOL clamp = TRUE) const;
00071         BOOL projectPosAgentToScreenEdge(const LLVector3 &pos_agent, LLCoordGL &out_point) const;
00072 
00073 
00074         LLStat *getVelocityStat() { return &mVelocityStat; }
00075         LLStat *getAngularVelocityStat() { return &mAngularVelocityStat; }
00076 
00077         void getPixelVectors(const LLVector3 &pos_agent, LLVector3 &up, LLVector3 &right);
00078         LLVector3 roundToPixel(const LLVector3 &pos_agent);
00079 
00080         void setDefaultFOV(F32 fov) { mCameraFOVDefault = fov; }
00081         F32 getDefaultFOV() { return mCameraFOVDefault; }
00082 
00083         BOOL cameraUnderWater() const;
00084 
00085         const LLVector3 &getPointOfInterest() { return mLastPointOfInterest; }
00086         BOOL areVertsVisible(LLViewerObject* volumep, BOOL all_verts);
00087         F32 getPixelMeterRatio() const                          { return mPixelMeterRatio; }
00088         S32 getScreenPixelArea() const                          { return mScreenPixelArea; }
00089 
00090         void setZoomParameters(F32 factor, S16 subregion) { mZoomFactor = factor; mZoomSubregion = subregion; }
00091         F32 getZoomFactor() { return mZoomFactor; }                             
00092         S16 getZoomSubRegion() { return mZoomSubregion; } 
00093 
00094         //************ UMICH 3D LAB ****************
00095         // Camera Rotations for stereo view
00096         void updateStereoValues();
00097         void rotateToLeftEye();
00098         void rotateToRightEye();
00099 
00100         //************ UMICH 3D LAB ****************
00101 
00102 protected:
00103         void calcProjection(const F32 far_distance) const;
00104 
00105         LLStat mVelocityStat;
00106         LLStat mAngularVelocityStat;
00107         mutable LLMatrix4       mProjectionMatrix;      // Cache of perspective matrix
00108         mutable LLMatrix4       mModelviewMatrix;
00109         F32                                     mCameraFOVDefault;
00110         LLVector3               mLastPointOfInterest;
00111         F32                                     mPixelMeterRatio; // Divide by distance from camera to get pixels per meter at that distance.
00112         S32                                     mScreenPixelArea; // Pixel area of entire window
00113         F32                                     mZoomFactor;
00114         S16                                     mZoomSubregion;
00115         
00116         //************ UMICH 3D LAB ****************
00117         LLVector3               mCameraTempPosition;
00118         LLVector3               mStereoLastPOI;
00119         //************ UMICH 3D LAB ****************
00120 
00121 public:
00122         F64             mGLProjectionMatrix[16];
00123         
00124 };
00125 
00126 extern LLViewerCamera *gCamera;
00127 extern F64 gGLModelView[16];
00128 extern F64 gGLProjection[16];
00129 extern S32 gGLViewport[4];
00130 
00131 #endif // LL_LLVIEWERCAMERA_H

Generated on Thu Jul 1 06:09:27 2010 for Second Life Viewer by  doxygen 1.4.7