/** 
 * @file llmanip.h
 * @brief LLManip class definition
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * 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_MANIP_H
#define LL_MANIP_H

#include "lltool.h"
//#include "v3math.h"

class LLView;
class LLTextBox;
class LLViewerObject;
class LLToolComposite;
class LLVector3;
class LLObjectSelection;

const S32 MIN_DIVISION_PIXEL_WIDTH = 3;

class LLManip : public LLTool
{
public:
	typedef enum e_manip_part
	{
		LL_NO_PART = 0,

		// Translation
		LL_X_ARROW,
		LL_Y_ARROW,
		LL_Z_ARROW,

		LL_YZ_PLANE,
		LL_XZ_PLANE,
		LL_XY_PLANE,

		// Scale
		LL_CORNER_NNN,
		LL_CORNER_NNP,		
		LL_CORNER_NPN,
		LL_CORNER_NPP,
		LL_CORNER_PNN,
		LL_CORNER_PNP,
		LL_CORNER_PPN,
		LL_CORNER_PPP,

		// Faces
		LL_FACE_POSZ,
		LL_FACE_POSX,
		LL_FACE_POSY,
		LL_FACE_NEGX,
		LL_FACE_NEGY,
		LL_FACE_NEGZ,

		// Edges
		LL_EDGE_NEGX_NEGY,
		LL_EDGE_NEGX_POSY,
		LL_EDGE_POSX_NEGY,
		LL_EDGE_POSX_POSY,
		
		LL_EDGE_NEGY_NEGZ,
		LL_EDGE_NEGY_POSZ,
		LL_EDGE_POSY_NEGZ,
		LL_EDGE_POSY_POSZ,

		LL_EDGE_NEGZ_NEGX,
		LL_EDGE_NEGZ_POSX,
		LL_EDGE_POSZ_NEGX,
		LL_EDGE_POSZ_POSX,

		// Rotation Manip
		LL_ROT_GENERAL,
		LL_ROT_X,
		LL_ROT_Y,
		LL_ROT_Z,
		LL_ROT_ROLL
	} EManipPart;

	// For use in loops and range checking.
	typedef enum e_select_part_ranges
	{
		LL_ARROW_MIN = LL_X_ARROW,
		LL_ARROW_MAX = LL_Z_ARROW,

		LL_CORNER_MIN = LL_CORNER_NNN,
		LL_CORNER_MAX = LL_CORNER_PPP,
		
		LL_FACE_MIN	  = LL_FACE_POSZ,
		LL_FACE_MAX	  = LL_FACE_NEGZ,
		
		LL_EDGE_MIN   = LL_EDGE_NEGX_NEGY,
		LL_EDGE_MAX   = LL_EDGE_POSZ_POSX
	} EManipPartRanges;
public:
	static void rebuild(LLViewerObject* vobj);
	
	LLManip( const std::string& name, LLToolComposite* composite );

	virtual BOOL		handleMouseDownOnPart(S32 x, S32 y, MASK mask) = 0;
	void				renderGuidelines(BOOL draw_x = TRUE, BOOL draw_y = TRUE, BOOL draw_z = TRUE);
	static void			renderXYZ(const LLVector3 &vec);

    /*virtual*/ bool	handleMouseUp(S32 x, S32 y, MASK mask);
    /*virtual*/ bool	handleHover(S32 x, S32 y, MASK mask);
	virtual void		highlightManipulators(S32 x, S32 y) = 0;
	virtual void		handleSelect();
	virtual void		handleDeselect();
	virtual BOOL		canAffectSelection() = 0;

	EManipPart			getHighlightedPart() { return mHighlightedPart; }
	
	LLSafeHandle<LLObjectSelection> getSelection();

protected:
	LLVector3			getSavedPivotPoint() const;
	LLVector3			getPivotPoint();
	void				getManipNormal(LLViewerObject* object, EManipPart manip, LLVector3 &normal);
	BOOL				getManipAxis(LLViewerObject* object, EManipPart manip, LLVector3 &axis);
	F32					getSubdivisionLevel(const LLVector3 &reference_point, const LLVector3 &translate_axis, F32 grid_scale, S32 min_pixel_spacing = MIN_DIVISION_PIXEL_WIDTH, F32 min_subdivisions = sGridMinSubdivisionLevel, F32 max_subdivisions = sGridMaxSubdivisionLevel);
	void				renderTickValue(const LLVector3& pos, F32 value, const std::string& suffix, const LLColor4 &color);
	void				renderTickText(const LLVector3& pos, const std::string& suffix, const LLColor4 &color);
	void				updateGridSettings();
	BOOL				getMousePointOnPlaneGlobal(LLVector3d& point, S32 x, S32 y, LLVector3d origin, LLVector3 normal) const;
	BOOL				getMousePointOnPlaneAgent(LLVector3& point, S32 x, S32 y, LLVector3 origin, LLVector3 normal);
	BOOL				nearestPointOnLineFromMouse( S32 x, S32 y, const LLVector3& b1, const LLVector3& b2, F32 &a_param, F32 &b_param );
	LLColor4			setupSnapGuideRenderPass(S32 pass);
protected:
	LLFrameTimer		mHelpTextTimer;
	BOOL				mInSnapRegime;
	LLSafeHandle<LLObjectSelection> mObjectSelection;
	EManipPart			mHighlightedPart;
	EManipPart			mManipPart;

	static F32			sHelpTextVisibleTime;
	static F32			sHelpTextFadeTime;
	static S32			sNumTimesHelpTextShown;
	static S32			sMaxTimesShowHelpText;
	static F32			sGridMaxSubdivisionLevel;
	static F32			sGridMinSubdivisionLevel;
	static LLVector2	sTickLabelSpacing;
};


#endif