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/**
* @file llviewercamera.h
* @brief LLViewerCamera class header file
*
* $LicenseInfo:firstyear=2002&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLVIEWERCAMERA_H
#define LL_LLVIEWERCAMERA_H
#include "llcamera.h"
#include "llsingleton.h"
#include "lltimer.h"
#include "m4math.h"
#include "llcoord.h"
#include "lltrace.h"
class LLViewerObject;
const bool FOR_SELECTION = true;
const bool NOT_FOR_SELECTION = false;
class alignas(16) LLViewerCamera : public LLCamera, public LLSimpleton<LLViewerCamera>
{
LL_ALIGN_NEW
public:
LLViewerCamera();
typedef enum
{
CAMERA_WORLD = 0,
CAMERA_SUN_SHADOW0,
CAMERA_SUN_SHADOW1,
CAMERA_SUN_SHADOW2,
CAMERA_SUN_SHADOW3,
CAMERA_SPOT_SHADOW0,
CAMERA_SPOT_SHADOW1,
CAMERA_WATER0,
CAMERA_WATER1,
NUM_CAMERAS
} eCameraID;
static eCameraID sCurCameraID;
void updateCameraLocation(const LLVector3 ¢er,
const LLVector3 &up_direction,
const LLVector3 &point_of_interest);
static void updateFrustumPlanes(LLCamera& camera, bool ortho = false, bool zflip = false, bool no_hacks = false);
static void updateCameraAngle(void* user_data, const LLSD& value);
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);
const LLMatrix4 &getProjection() const;
const LLMatrix4 &getModelview() const;
// Warning! These assume the current global matrices are correct
void projectScreenToPosAgent(const S32 screen_x, const S32 screen_y, LLVector3* pos_agent ) const;
bool projectPosAgentToScreen(const LLVector3 &pos_agent, LLCoordGL &out_point, const bool clamp = true) const;
bool projectPosAgentToScreenEdge(const LLVector3 &pos_agent, LLCoordGL &out_point) const;
LLVector3 getVelocityDir() const {return mVelocityDir;}
static LLTrace::CountStatHandle<>* getVelocityStat() {return &sVelocityStat; }
static LLTrace::CountStatHandle<>* getAngularVelocityStat() {return &sAngularVelocityStat; }
F32 getCosHalfFov() {return mCosHalfCameraFOV;}
F32 getAverageSpeed() {return mAverageSpeed ;}
F32 getAverageAngularSpeed() {return mAverageAngularSpeed;}
void getPixelVectors(const LLVector3 &pos_agent, LLVector3 &up, LLVector3 &right);
LLVector3 roundToPixel(const LLVector3 &pos_agent);
// Sets the current matrix
/* virtual */ void setView(F32 vertical_fov_rads); // NOTE: broadcasts to simulator
void setViewNoBroadcast(F32 vertical_fov_rads); // set FOV without broadcasting to simulator (for temporary local cameras)
void setDefaultFOV(F32 fov) ;
F32 getDefaultFOV() { return mCameraFOVDefault; }
bool isDefaultFOVChanged();
bool cameraUnderWater() const;
bool areVertsVisible(LLViewerObject* volumep, bool all_verts);
const LLVector3 &getPointOfInterest() { return mLastPointOfInterest; }
F32 getPixelMeterRatio() const { return mPixelMeterRatio; }
S32 getScreenPixelArea() const { return mScreenPixelArea; }
void setZoomParameters(F32 factor, S16 subregion) { mZoomFactor = factor; mZoomSubregion = subregion; }
F32 getZoomFactor() { return mZoomFactor; }
S16 getZoomSubRegion() { return mZoomSubregion; }
protected:
void calcProjection(const F32 far_distance) const;
static LLTrace::CountStatHandle<> sVelocityStat;
static LLTrace::CountStatHandle<> sAngularVelocityStat;
LLVector3 mVelocityDir ;
F32 mAverageSpeed ;
F32 mAverageAngularSpeed ;
mutable LLMatrix4 mProjectionMatrix; // Cache of perspective matrix
mutable LLMatrix4 mModelviewMatrix;
F32 mCameraFOVDefault;
F32 mPrevCameraFOVDefault;
F32 mCosHalfCameraFOV;
LLVector3 mLastPointOfInterest;
F32 mPixelMeterRatio; // Divide by distance from camera to get pixels per meter at that distance.
S32 mScreenPixelArea; // Pixel area of entire window
F32 mZoomFactor;
S16 mZoomSubregion;
public:
};
#endif // LL_LLVIEWERCAMERA_H
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