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/**
* @file llhudicon.h
* @brief LLHUDIcon class definition
*
* $LicenseInfo:firstyear=2006&license=viewerlgpl$
* 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_LLHUDICON_H
#define LL_LLHUDICON_H
#include "llpointer.h"
#include "llhudobject.h"
#include "v4color.h"
#include "v4coloru.h"
#include "v2math.h"
#include "llrect.h"
#include "llframetimer.h"
#include "llfontgl.h"
#include <set>
#include <vector>
// Renders a 2D icon billboard floating at the location specified.
class LLViewerTexture;
class LLHUDIcon : public LLHUDObject
{
friend class LLHUDObject;
public:
/*virtual*/ void render();
/*virtual*/ void markDead();
/*virtual*/ F32 getDistance() const { return mDistance; }
void setImage(LLViewerTexture* imagep);
void setScale(F32 fraction_of_fov);
void restartLifeTimer() { mLifeTimer.reset(); }
static S32 generatePickIDs(S32 start_id, S32 step_size);
static LLHUDIcon* handlePick(S32 pick_id);
static LLHUDIcon* lineSegmentIntersectAll(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection);
static void updateAll();
static void cleanupDeadIcons();
static S32 getNumInstances();
static BOOL iconsNearby();
BOOL getHidden() const { return mHidden; }
void setHidden( BOOL hide ) { mHidden = hide; }
BOOL lineSegmentIntersect(const LLVector4a& start, const LLVector4a& end, LLVector4a* intersection);
protected:
LLHUDIcon(const U8 type);
~LLHUDIcon();
void renderIcon(BOOL for_select); // common render code
private:
LLPointer<LLViewerTexture> mImagep;
LLFrameTimer mAnimTimer;
LLFrameTimer mLifeTimer;
F32 mDistance;
S32 mPickID;
F32 mScale;
BOOL mHidden;
typedef std::vector<LLPointer<LLHUDIcon> > icon_instance_t;
static icon_instance_t sIconInstances;
};
#endif // LL_LLHUDICON_H
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