126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2006-2010 - Frictional Games
|
|
*
|
|
* This file is part of HPL1 Engine.
|
|
*/
|
|
|
|
#ifndef HPL_FRUSTUM_H
|
|
#define HPL_FRUSTUM_H
|
|
|
|
#include "hpl1/engine/graphics/GraphicsTypes.h"
|
|
#include "hpl1/engine/math/BoundingVolume.h"
|
|
#include "hpl1/engine/math/MathTypes.h"
|
|
#include "hpl1/engine/system/SystemTypes.h"
|
|
|
|
namespace hpl {
|
|
|
|
class iLowLevelGraphics;
|
|
|
|
enum eFrustumPlane {
|
|
eFrustumPlane_Left = 0,
|
|
eFrustumPlane_Right = 1,
|
|
eFrustumPlane_Bottom = 2,
|
|
eFrustumPlane_Top = 3,
|
|
eFrustumPlane_Near = 4,
|
|
eFrustumPlane_Far = 5,
|
|
eFrustumPlane_LastEnum = 7,
|
|
};
|
|
|
|
enum eFrustumCollision {
|
|
eFrustumCollision_Inside,
|
|
eFrustumCollision_Outside,
|
|
eFrustumCollision_Intersect,
|
|
eFrustumCollision_LastEnum
|
|
};
|
|
|
|
class cFrustum {
|
|
public:
|
|
cFrustum();
|
|
|
|
void SetViewProjMatrix(const cMatrixf &a_mtxProj, const cMatrixf &a_mtxView,
|
|
float afFarPlane, float afNearPlane, float afFOV, float afAspect,
|
|
const cVector3f &avOrigin, bool abInfFarPlane = false);
|
|
|
|
cPlanef GetPlane(eFrustumPlane aType);
|
|
|
|
eFrustumCollision CollideBoundingVolume(cBoundingVolume *aBV);
|
|
|
|
eFrustumCollision CollideFustrumSphere(cBoundingVolume *aBV);
|
|
|
|
eFrustumCollision CollideBVSphere(cBoundingVolume *aBV);
|
|
eFrustumCollision CollideBVAABB(cBoundingVolume *aBV);
|
|
|
|
/**
|
|
* Checks intersection with a line
|
|
*/
|
|
bool CheckLineIntersection(const cVector3f &avPoint1, const cVector3f &avPoint2);
|
|
|
|
/**
|
|
* Checks intersection with a quad mesh.
|
|
* \param apPoints the points of the quad mesh, every 4 points is a face.
|
|
*/
|
|
bool CheckQuadMeshIntersection(tVector3fVec *apPoints);
|
|
|
|
bool CheckVolumeIntersection(cShadowVolumeBV *apVolume);
|
|
|
|
cSpheref GetBoundingSphere() { return mBoundingSphere; }
|
|
const cBoundingVolume &GetBoundingVolume() { return mBoundingVolume; }
|
|
|
|
const cVector3f &GetOrigin();
|
|
cBoundingVolume *GetOriginBV();
|
|
|
|
cVector3f GetForward();
|
|
|
|
void Draw(iLowLevelGraphics *apLowLevelGraphics);
|
|
|
|
private:
|
|
void UpdatePlanes();
|
|
void UpdateSphere();
|
|
void UpdateEndPoints();
|
|
void UpdateBV();
|
|
|
|
float mfFarPlane;
|
|
float mfNearPlane;
|
|
float mfAspect;
|
|
float mfFOV;
|
|
|
|
bool mbInfFarPlane;
|
|
|
|
cVector3f mvOrigin;
|
|
cBoundingVolume mOriginBV;
|
|
|
|
cMatrixf m_mtxViewProj;
|
|
cMatrixf m_mtxModelView;
|
|
cPlanef mPlane[6];
|
|
cSpheref mBoundingSphere;
|
|
cBoundingVolume mBoundingVolume;
|
|
|
|
cVector3f mvEndPoints[4];
|
|
tVector3fVec mvPoints;
|
|
};
|
|
|
|
} // namespace hpl
|
|
|
|
#endif // HPL_FRUSTUM_H
|