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game/client/tf2/ground_line.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef GROUND_LINE_H
+#define GROUND_LINE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+
+#include "mathlib/vector.h"
+#include "hud_minimap.h"
+
+
+class IMaterial;
+
+
+#define MAX_GROUNDLINE_SEGMENTS	100
+
+
+// This class will lay out a line of a specified width along the ground. It follows
+// the contour of the ground as well as it can.
+class CGroundLine : public vgui::Panel
+{
+	typedef vgui::Panel BaseClass;
+
+public:
+					CGroundLine();
+					~CGroundLine();
+
+	// One-time initialization.
+	bool			Init(const char *pMaterialName);
+
+	// Setup the line's rendering parameters.
+	void			SetParameters(
+		const Vector &vStart, 
+		const Vector &vEnd, 
+		const Vector &vStartColor,	// Color values 0-1
+		const Vector &vEndColor,	// Color values 0-1
+		float alpha,
+		float lineWidth
+		);
+
+	// Called by the renderer when it's time to render the ground lines.
+	static void		DrawAllGroundLines();
+
+	// Set the visibility
+	void			SetVisible( bool bVisible );
+	bool			IsVisible( void );
+
+private:
+	
+	// Draw a line along the ground.
+	void			Draw();
+	void			Paint();
+
+private:
+	// Rendering parameters.
+	IMaterial		*m_pMaterial;
+	Vector			m_vStartColor;
+	Vector			m_vEndColor;
+	float			m_Alpha;
+	Vector			m_vStart;
+	Vector			m_vEnd;
+	float			m_LineWidth;
+	bool			m_bVisible;
+
+	// Points along the line.
+	Vector			m_Points[MAX_GROUNDLINE_SEGMENTS];
+	unsigned int	m_nPoints;
+
+	unsigned short	m_ListHandle;
+};
+
+
+#endif // GROUND_LINE_H