/**
 * @file  XTPChartOpenGLFunnelDeviceCommand.h
 *
 * @copyright
 * (c) 1998-2025 Codejock Software, All Rights Reserved.
 *
 * This source file is the property of Codejock Software and must not be
 * redistributed by any means without the explicit written permission of
 * Codejock Software.
 *
 * The use of this source code is governed by the terms and conditions specified
 * in the Toolkit Pro license agreement. Codejock Software grants you, as a
 * single software developer, the limited right to use this software on one
 * computer only.
 *
 * Contact Information:
 * support@codejock.com
 * http://www.codejock.com
 *
 */

/** @cond */
#if !defined(__XTPCHARTOPENGLFUNNELDEVICECOMMAND_H__)
#	define __XTPCHARTOPENGLFUNNELDEVICECOMMAND_H__

#	if _MSC_VER >= 1000
#		pragma once
#	endif // _MSC_VER >= 1000

#	include "Common/Base/Diagnostic/XTPDisableNoisyWarnings.h"

class CXTPChart3dFunnelSeriesStyle;
class CXTPChartDeviceContext;
class CXTPChartSeriesStyle;
class CXTPChartOpenGLDeviceContext;

/**
 * @brief
 * This class represents a chart funnel device command, which is a kind of
 * CXTPChartDeviceCommand. It specifically handles the rendering of a funnel
 * in a chart using OpenGL.
 */
class _XTP_EXT_CLASS CXTPChartOpenGLFunnelDeviceCommand : public CXTPChart3dDeviceCommand
{
public:
	/**
	 * @brief
	 * This function creates a label view drawing command object.
	 *
	 * @param center Funnel point physical center in 3d space.
	 * @param dWidth Total funnel width.
	 * @param dHeight Total funnel height.
	 * @param dFrom The percentage factor value in the range 0..1 of the inital funnel point value.
	 * @param dTo The percentage factor value in the range 0..1 of the final funnel point value.
	 * @param color Funnel point color value.
	 * @param bSmoothEdges TRUE to make edges between point faces smooth and reflect light towards
	 *			   	      the outer radius, FALSE to make point faces reflect light in one
	 *				      direction.
	 */
	CXTPChartOpenGLFunnelDeviceCommand(const CXTPPoint3d& center, const CXTPChartRectF& rc,
									   double dWidth, double dHeight, double dFrom, double dTo,
									   const CXTPChartColor& color, BOOL bSmoothEdges);

	/**
	 * @brief
	 * Handles command object destruction.
	 */
	~CXTPChartOpenGLFunnelDeviceCommand();

protected:
	/**
	 * @brief
	 *  Performs recursive hit testing of the element at the specified point.
	 *
	 * @param point Point in which an element is to be found.
	 * @param pParent Parent element pointer.
	 *
	 * @return
	 *  A pointer to the element found at the specified point or NULL
	 *  if no element is found.
	 */
	virtual CXTPChartElement* HitTest(CPoint point, CXTPChartElement* pParent) const;

	/**
	 * @brief
	 * Override this function to write the drawing code for specific objects.
	 *
	 * @param pDC A pointer to the chart device context.
	 */
	virtual void ExecuteOverride(CXTPChartDeviceContext* pDC);

	/**
	 * @brief
	 *  Applies series style to the current element.
	 *
	 * @param pStyle Series style to apply.
	 */
	virtual void ApplySeriesStyle(CXTPChartSeriesStyle* pStyle);

	/**
	 * @brief
	 *  Derived implementation must override this method for implementing
	 *  implementation specific preparation behavior.
	 *
	 * @param pDC Device context pointer for which the command is to be prepared.
	 *
	 * @see
	 *  Prepare
	 */
	virtual void PrepareOverride(CXTPChartDeviceContext* pDC);

private:
	void DrawTriangle(const CXTPPoint3d& a, const CXTPPoint3d& va, const CXTPPoint3d& b,
					  const CXTPPoint3d& vb, const CXTPPoint3d& c, const CXTPPoint3d& vc);
	void DrawFunnelSlice();

	void ComputeConnectorPoints(CXTPChartOpenGLDeviceContext* pGLDC);

private:
	BOOL m_bPrepared;
	CXTPChart3dBox m_3dBox;
	CXTPPoint3d m_ptCenterConnectorPoint;
	CXTPPoint3d m_ptOuterConnectorPoint;
	CXTPChartColor m_color;
	CXTPChart3dFunnelSeriesStyle* m_pStyle;
	GLuint m_listId;
	CXTPChartRectF m_rc;
	double m_dWidth;
	double m_dHeight;
	double m_dFrom;
	double m_dTo;
	CXTPPoint3d m_ptCenter;
	BOOL m_bSmoothEdges;
	CArray<CXTPPoint3d, const CXTPPoint3d&> m_arMidFacePoints;
};

#	include "Common/Base/Diagnostic/XTPEnableNoisyWarnings.h"
#endif //#if !defined(__XTPCHARTOPENGLFUNNELDEVICECOMMAND_H__)
/** @endcond */