/**
 * @file llmaniptranslate.h
 * @brief LLManipTranslate class definition
 *
 * $LicenseInfo:firstyear=2002&license=viewergpl$
 *
 * Copyright (c) 2002-2009, Linden Research, Inc.
 *
 * Second Life Viewer Source Code
 * The source code in this file ("Source Code") is provided by Linden Lab
 * to you under the terms of the GNU General Public License, version 2.0
 * ("GPL"), unless you have obtained a separate licensing agreement
 * ("Other License"), formally executed by you and Linden Lab.  Terms of
 * the GPL can be found in doc/GPL-license.txt in this distribution, or
 * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
 *
 * There are special exceptions to the terms and conditions of the GPL as
 * it is applied to this Source Code. View the full text of the exception
 * in the file doc/FLOSS-exception.txt in this software distribution, or
 * online at
 * http://secondlifegrid.net/programs/open_source/licensing/flossexception
 *
 * By copying, modifying or distributing this software, you acknowledge
 * that you have read and understood your obligations described above,
 * and agree to abide by those obligations.
 *
 * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
 * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
 * COMPLETENESS OR PERFORMANCE.
 * $/LicenseInfo$
 */

#ifndef LL_LLMANIPTRANSLATE_H
#define LL_LLMANIPTRANSLATE_H

#include "llmanip.h"
#include "lltimer.h"
#include "llvector4.h"
#include "llquaternion.h"

class LLManipTranslate final : public LLManip
{
protected:
	LOG_CLASS(LLManipTranslate);

public:
	class ManipulatorHandle
	{
	public:
		LLVector3	mStartPosition;
		LLVector3	mEndPosition;
		EManipPart	mManipID;
		F32			mHotSpotRadius;

		ManipulatorHandle(LLVector3 start_pos, LLVector3 end_pos,
						  EManipPart id, F32 radius)
		:	mStartPosition(start_pos),
			mEndPosition(end_pos),
			mManipID(id),
			mHotSpotRadius(radius)
		{
		}
	};

	LLManipTranslate(LLToolComposite* composite);

	static bool getSnapEnabled();
	static bool getSnapToMouseCursor();
	static F32 getGridDrawSize();
	static U32 getGridTexName();
	static void destroyGL();
	static void restoreGL();

	bool handleMouseDown(S32 x, S32 y, MASK mask) override;
	bool handleMouseUp(S32 x, S32 y, MASK mask) override;
	bool handleHover(S32 x, S32 y, MASK mask) override;
	void render() override;
	void handleSelect() override;

	void highlightManipulators(S32 x, S32 y) override;
	bool handleMouseDownOnPart(S32 x, S32 y, MASK mask) override;
	bool canAffectSelection() override;

protected:
	enum EHandleType
	{
		HANDLE_CONE,
		HANDLE_BOX,
		HANDLE_SPHERE
	};

	void renderArrow(S32 which_arrow, S32 selected_arrow, F32 box_size,
					 F32 arrow_size, F32 handle_size, bool reverse_direction);
	void renderTranslationHandles();
	void renderText();
	void renderSnapGuides();
	void renderGrid(F32 x, F32 y, F32 size, F32 r, F32 g, F32 b, F32 a);
	void renderGridVert(F32 x_trans, F32 y_trans, F32 r, F32 g, F32 b,
						F32 alpha);
	void highlightIntersection(LLVector3 normal, LLVector3 selection_center,
							   LLQuaternion grid_rotation,
							   LLColor4 inner_color);
	F32 getMinGridScale();

private:
	struct compare_manipulators
	{
		LL_INLINE bool operator()(const ManipulatorHandle* const a,
								  const ManipulatorHandle* const b) const
		{
			if (a->mEndPosition.mV[VZ] != b->mEndPosition.mV[VZ])
			{
				return (a->mEndPosition.mV[VZ] < b->mEndPosition.mV[VZ]);
			}
			return a->mManipID < b->mManipID;
		}
	};

private:
	S32			mLastHoverMouseX;
	S32			mLastHoverMouseY;
	S32			mMouseDownX;
	S32			mMouseDownY;
	F32			mAxisArrowLength;		// pixels
	F32			mConeSize;				// meters, world space
	F32			mArrowLengthMeters;		// meters
	F32			mPlaneManipOffsetMeters;
	F32			mSnapOffsetMeters;
	F32			mSubdivisions;
	LLVector3	mManipNormal;
	LLVector3d	mDragCursorStartGlobal;
	LLVector3d	mDragSelectionStartGlobal;
	LLTimer		mUpdateTimer;
	LLVector4	mManipulatorVertices[18];
	LLVector3	mSnapOffsetAxis;
	LLQuaternion mGridRotation;
	LLVector3	mGridOrigin;
	LLVector3	mGridScale;
	LLVector3	mArrowScales;
	LLVector3	mPlaneScales;
	LLVector4	mPlaneManipPositions;
	bool		mMouseOutsideSlop;		// true after mouse goes outside slop region
	bool		mCopyMadeThisDrag;
	bool		mInSnapRegime;
};

#endif