56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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//=============================================================================//
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#ifndef IOCCLUSIONSYSTEM_H
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#define IOCCLUSIONSYSTEM_H
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#ifdef _WIN32
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#pragma once
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#endif
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class Vector;
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class VMatrix;
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struct model_t;
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class VPlane;
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class CUtlBuffer;
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//-----------------------------------------------------------------------------
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// Occlusion system interface
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//-----------------------------------------------------------------------------
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class IOcclusionSystem
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{
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public:
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// Activate/deactivate an occluder brush model
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virtual void ActivateOccluder( int nOccluderIndex, bool bActive ) = 0;
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// Sets the view transform
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virtual void SetView( const Vector &vecCameraPos, float flFOV, const VMatrix &worldToCamera,
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const VMatrix &cameraToProjection, const VPlane &nearClipPlane ) = 0;
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// Test for occlusion (bounds specified in abs space)
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virtual bool IsOccluded( const Vector &vecAbsMins, const Vector &vecAbsMaxs ) = 0;
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// Sets global occlusion parameters
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virtual void SetOcclusionParameters( float flMaxOccludeeArea, float flMinOccluderArea ) = 0;
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virtual float MinOccluderArea() const = 0;
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// Render debugging overlay
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virtual void DrawDebugOverlays() = 0;
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};
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//-----------------------------------------------------------------------------
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// Singleton accessor
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//-----------------------------------------------------------------------------
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IOcclusionSystem *OcclusionSystem();
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#endif // IOCCLUSIONSYSTEM_H
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