119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//===========================================================================//
|
|
#include "cbase.h"
|
|
#include "view_shared.h"
|
|
|
|
// memdbgon must be the last include file in a .cpp file!!!
|
|
#include "tier0/memdbgon.h"
|
|
|
|
class C_FuncReflectiveGlass : public C_BaseEntity
|
|
{
|
|
public:
|
|
DECLARE_CLASS( C_FuncReflectiveGlass, C_BaseEntity );
|
|
DECLARE_CLIENTCLASS();
|
|
|
|
// C_BaseEntity.
|
|
public:
|
|
C_FuncReflectiveGlass();
|
|
virtual ~C_FuncReflectiveGlass();
|
|
|
|
virtual bool ShouldDraw();
|
|
|
|
C_FuncReflectiveGlass *m_pNext;
|
|
};
|
|
|
|
IMPLEMENT_CLIENTCLASS_DT( C_FuncReflectiveGlass, DT_FuncReflectiveGlass, CFuncReflectiveGlass )
|
|
END_RECV_TABLE()
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Globals
|
|
//-----------------------------------------------------------------------------
|
|
C_EntityClassList<C_FuncReflectiveGlass> g_ReflectiveGlassList;
|
|
template<> C_FuncReflectiveGlass *C_EntityClassList<C_FuncReflectiveGlass>::m_pClassList = NULL;
|
|
|
|
C_FuncReflectiveGlass* GetReflectiveGlassList()
|
|
{
|
|
return g_ReflectiveGlassList.m_pClassList;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Constructor, destructor
|
|
//-----------------------------------------------------------------------------
|
|
C_FuncReflectiveGlass::C_FuncReflectiveGlass()
|
|
{
|
|
g_ReflectiveGlassList.Insert( this );
|
|
}
|
|
|
|
C_FuncReflectiveGlass::~C_FuncReflectiveGlass()
|
|
{
|
|
g_ReflectiveGlassList.Remove( this );
|
|
}
|
|
|
|
|
|
bool C_FuncReflectiveGlass::ShouldDraw()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// Do we have reflective glass in view?
|
|
//-----------------------------------------------------------------------------
|
|
bool IsReflectiveGlassInView( const CViewSetup& view, cplane_t &plane )
|
|
{
|
|
// Early out if no cameras
|
|
C_FuncReflectiveGlass *pReflectiveGlass = GetReflectiveGlassList();
|
|
if ( !pReflectiveGlass )
|
|
return false;
|
|
|
|
Frustum_t frustum;
|
|
GeneratePerspectiveFrustum( view.origin, view.angles, view.zNear, view.zFar, view.fov, view.m_flAspectRatio, frustum );
|
|
|
|
cplane_t localPlane;
|
|
Vector vecOrigin, vecWorld, vecDelta, vecForward;
|
|
AngleVectors( view.angles, &vecForward, NULL, NULL );
|
|
|
|
for ( ; pReflectiveGlass != NULL; pReflectiveGlass = pReflectiveGlass->m_pNext )
|
|
{
|
|
if ( pReflectiveGlass->IsDormant() )
|
|
continue;
|
|
|
|
Vector vecMins, vecMaxs;
|
|
pReflectiveGlass->GetRenderBoundsWorldspace( vecMins, vecMaxs );
|
|
if ( R_CullBox( vecMins, vecMaxs, frustum ) )
|
|
continue;
|
|
|
|
const model_t *pModel = pReflectiveGlass->GetModel();
|
|
const matrix3x4_t& mat = pReflectiveGlass->EntityToWorldTransform();
|
|
|
|
int nCount = modelinfo->GetBrushModelPlaneCount( pModel );
|
|
for ( int i = 0; i < nCount; ++i )
|
|
{
|
|
modelinfo->GetBrushModelPlane( pModel, i, localPlane, &vecOrigin );
|
|
|
|
MatrixTransformPlane( mat, localPlane, plane ); // Transform to world space
|
|
VectorTransform( vecOrigin, mat, vecWorld );
|
|
|
|
if ( view.origin.Dot( plane.normal ) <= plane.dist ) // Check for view behind plane
|
|
continue;
|
|
|
|
VectorSubtract( vecWorld, view.origin, vecDelta ); // Backface cull
|
|
if ( vecDelta.Dot( plane.normal ) >= 0 )
|
|
continue;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
|