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game/client/view.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+// $NoKeywords: $
+//=============================================================================//
+
+#if !defined( VIEW_H )
+#define VIEW_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#if _DEBUG
+extern bool g_bRenderingCameraView;		// For debugging (frustum fix for cameras)...
+#endif
+
+class VMatrix;
+class Vector;
+class QAngle;
+class VPlane;
+
+
+// near and far Z it uses to render the world.
+#ifndef HL1_CLIENT_DLL
+#define VIEW_NEARZ	7
+#else
+#define VIEW_NEARZ	3
+#endif
+//#define VIEW_FARZ	28400
+
+
+//-----------------------------------------------------------------------------
+// There's a difference between the 'current view' and the 'main view'
+// The 'main view' is where the player is sitting. Current view is just
+// what's currently being rendered, which, owing to monitors or water,
+// could be just about anywhere.
+//-----------------------------------------------------------------------------
+const Vector &MainViewOrigin();
+const QAngle &MainViewAngles();
+const Vector &PrevMainViewOrigin();
+const QAngle &PrevMainViewAngles();
+const VMatrix &MainWorldToViewMatrix();
+const Vector &MainViewForward();
+const Vector &MainViewRight();
+const Vector &MainViewUp();
+
+const Vector &CurrentViewOrigin();
+const QAngle &CurrentViewAngles();
+const VMatrix &CurrentWorldToViewMatrix();
+const Vector &CurrentViewForward();
+const Vector &CurrentViewRight();
+const Vector &CurrentViewUp();
+
+void AllowCurrentViewAccess( bool allow );
+bool IsCurrentViewAccessAllowed();
+
+// Returns true of the sphere is outside the frustum defined by pPlanes.
+// (planes point inwards).
+bool R_CullSphere( const VPlane *pPlanes, int nPlanes, const Vector *pCenter, float radius );
+float ScaleFOVByWidthRatio( float fovDegrees, float ratio );
+
+extern ConVar mat_wireframe;
+
+extern const ConVar *sv_cheats;
+
+
+static inline int WireFrameMode( void )
+{
+	if ( !sv_cheats )
+	{
+		sv_cheats = cvar->FindVar( "sv_cheats" );
+	}
+
+	if ( sv_cheats && sv_cheats->GetBool() )
+		return mat_wireframe.GetInt();
+	else
+		return 0;
+}
+
+static inline bool ShouldDrawInWireFrameMode( void )
+{
+	if ( !sv_cheats )
+	{
+		sv_cheats = cvar->FindVar( "sv_cheats" );
+	}
+
+	if ( sv_cheats && sv_cheats->GetBool() )
+		return ( mat_wireframe.GetInt() != 0 );
+	else
+		return false;
+}
+
+void ComputeCameraVariables( const Vector &vecOrigin, const QAngle &vecAngles, Vector *pVecForward, Vector *pVecRight, Vector *pVecUp, VMatrix *pMatCamInverse );
+
+#endif // VIEW_H