mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-11-22 18:30:27 +01:00
217 lines
7.9 KiB
C++
Executable File
217 lines
7.9 KiB
C++
Executable File
/* Copyright (c) 2002-2012 Croteam Ltd.
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of version 2 of the GNU General Public License as published by
|
|
the Free Software Foundation
|
|
|
|
|
|
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, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
|
|
|
|
#ifndef SE_INCL_BSP_INTERNAL_H
|
|
#define SE_INCL_BSP_INTERNAL_H
|
|
#ifdef PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
|
|
extern FLOAT mth_fCSGEpsilon;
|
|
|
|
#ifdef __arm__
|
|
#define SPHERE_HACK
|
|
#endif
|
|
|
|
/*
|
|
* Type used to identify BSP-node locations
|
|
*/
|
|
enum BSPNodeLocation {
|
|
BNL_ILLEGAL=0, // for illegal value
|
|
BNL_INSIDE, // inside leaf node
|
|
BNL_OUTSIDE, // outside leaf node
|
|
BNL_BRANCH, // branch node, unspecified location
|
|
};
|
|
|
|
/*
|
|
* Template class for BSP vertex
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPVertex : public Vector<Type, iDimensions> {
|
|
public:
|
|
/* Default constructor. */
|
|
inline BSPVertex(void) {};
|
|
|
|
/* Assignment operator with coordinates only. */
|
|
inline BSPVertex<Type, iDimensions> &operator=(const Vector<Type, iDimensions> &vCoordinates);
|
|
};
|
|
|
|
/*
|
|
* Template class for BSP vertex container
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPVertexContainer {
|
|
public:
|
|
INDEX bvc_iMaxAxis; // index of largest axis of direction
|
|
Type bvc_tMaxAxisSign; // sign of largest axis of direction
|
|
|
|
CStaticStackArray<BSPVertex<Type, iDimensions> > bvc_aVertices; // array of vertices
|
|
public:
|
|
Vector<Type, iDimensions> bvc_vDirection; // direction of the split line
|
|
|
|
/* Default constructor. */
|
|
BSPVertexContainer(void);
|
|
|
|
/* Initialize for a direction. */
|
|
void Initialize(const Vector<Type, iDimensions> &vDirection);
|
|
/* Uninitialize. */
|
|
void Uninitialize(void);
|
|
|
|
/* Check if this container is in an unusable state (polygon coplanar with the splitter).*/
|
|
inline BOOL IsPlannar(void) { return bvc_iMaxAxis==0; };
|
|
|
|
/* Add a new vertex. */
|
|
inline void AddVertex(const Vector<Type, iDimensions> &vPoint);
|
|
|
|
/* Sort vertices in this container along the largest axis of container direction. */
|
|
void Sort(void);
|
|
/* Elliminate paired vertices. */
|
|
void ElliminatePairedVertices(void);
|
|
/* Create edges from vertices in one container -- must be sorted before. */
|
|
void CreateEdges(CDynamicArray<BSPEdge<Type, iDimensions> > &abedAll, size_t ulEdgeTag);
|
|
};
|
|
|
|
/*
|
|
* Template class for BSP edge
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPEdge {
|
|
public:
|
|
Vector<Type, iDimensions> bed_vVertex0; // edge vertices
|
|
Vector<Type, iDimensions> bed_vVertex1;
|
|
size_t bed_ulEdgeTag; // tags for BSPs with tagged edges/planes
|
|
|
|
/* Default constructor. */
|
|
inline BSPEdge(void) {};
|
|
/* Constructor with two vectors. */
|
|
inline BSPEdge(const Vector<Type, iDimensions> &vVertex0, const Vector<Type, iDimensions> &vVertex1, size_t ulTag)
|
|
: bed_vVertex0(vVertex0), bed_vVertex1(vVertex1), bed_ulEdgeTag(ulTag) {}
|
|
|
|
/* Clear the object. */
|
|
inline void Clear(void) {};
|
|
// remove all edges marked for removal
|
|
static void RemoveMarkedBSPEdges(CDynamicArray<BSPEdge<Type, iDimensions> > &abed);
|
|
// optimize a polygon made out of BSP edges using tag information
|
|
static void OptimizeBSPEdges(CDynamicArray<BSPEdge<Type, iDimensions> > &abed);
|
|
};
|
|
|
|
/*
|
|
* Template class for polygons used in creating BSP-trees
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPPolygon : public Plane<Type, iDimensions> {
|
|
public:
|
|
CDynamicArray<BSPEdge<Type, iDimensions> > bpo_abedPolygonEdges; // array of edges in the polygon
|
|
size_t bpo_ulPlaneTag; // tags for BSPs with tagged planes (-1 for no tag)
|
|
|
|
/* Add an edge to the polygon. */
|
|
inline void AddEdge(const Vector<Type, iDimensions> &vPoint0, const Vector<Type, iDimensions> &vPoint1, size_t ulTag);
|
|
|
|
/* Default constructor. */
|
|
inline BSPPolygon(void) : bpo_ulPlaneTag(-1) {};
|
|
/* Constructor with array of edges and plane. */
|
|
inline BSPPolygon(
|
|
Plane<Type, iDimensions> &plPlane, CDynamicArray<BSPEdge<Type, iDimensions> > abedPolygonEdges, size_t ulPlaneTag)
|
|
: Plane<Type, iDimensions>(plPlane)
|
|
, bpo_abedPolygonEdges(abedPolygonEdges)
|
|
, bpo_ulPlaneTag(ulPlaneTag)
|
|
{};
|
|
|
|
/* Clear the object. */
|
|
inline void Clear(void) {bpo_abedPolygonEdges.Clear();};
|
|
};
|
|
|
|
template<class Type, int iDimensions>
|
|
class BSPLine {
|
|
public:
|
|
Type bl_tMin;
|
|
Type bl_tMax;
|
|
};
|
|
|
|
/*
|
|
* Template class for BSP-tree node of arbitrary dimensions and arbitrary type of members
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPNode : public Plane<Type, iDimensions> { // split plane
|
|
public:
|
|
enum BSPNodeLocation bn_bnlLocation; // location of bsp node
|
|
|
|
BSPNode<Type, iDimensions> *bn_pbnFront; // pointer to child node in front of split plane
|
|
BSPNode<Type, iDimensions> *bn_pbnBack; // pointer to child node behind split plane
|
|
size_t bn_ulPlaneTag; // tags for BSPs with tagged planes (-1 for no tag)
|
|
|
|
public:
|
|
/* Defualt constructor (for arrays only). */
|
|
inline BSPNode(void) {};
|
|
/* Constructor for a leaf node. */
|
|
inline BSPNode(enum BSPNodeLocation bnl);
|
|
/* Constructor for a branch node. */
|
|
inline BSPNode(const Plane<Type, iDimensions> &plSplitPlane, size_t ulPlaneTag,
|
|
BSPNode<Type, iDimensions> &bnFront, BSPNode<Type, iDimensions> &bnBack);
|
|
/* Constructor for cloning a bsp (sub)tree. */
|
|
BSPNode(BSPNode<Type, iDimensions> &bnRoot);
|
|
/* Recursive destructor. */
|
|
void DeleteBSPNodeRecursively(void);
|
|
|
|
// find minimum/maximum parameters of points on a line that are inside - recursive
|
|
void FindLineMinMax(BSPLine<Type, iDimensions> &bl,
|
|
const Vector<Type, iDimensions> &v0,
|
|
const Vector<Type, iDimensions> &v1,
|
|
Type t0, Type t1);
|
|
|
|
/* Test if a sphere is inside, outside, or intersecting. (Just a trivial rejection test) */
|
|
FLOAT TestSphere(const Vector<Type, iDimensions> &vSphereCenter, Type tSphereRadius) const;
|
|
#ifdef SPHERE_HACK
|
|
int TestSphere_hack(const FLOAT *params) const;
|
|
#endif
|
|
/* Test if a box is inside, outside, or intersecting. (Just a trivial rejection test) */
|
|
FLOAT TestBox(const OBBox<Type> &box) const;
|
|
};
|
|
|
|
/*
|
|
* Template class that performs polygon cuts using BSP-tree
|
|
*/
|
|
template<class Type, int iDimensions>
|
|
class BSPCutter {
|
|
public:
|
|
/* Split an edge with a plane. */
|
|
static inline void SplitEdge(const Vector<Type, iDimensions> &vPoint0, const Vector<Type, iDimensions> &vPoint1, size_t ulEdgeTag,
|
|
const Plane<Type, iDimensions> &plSplitPlane,
|
|
BSPPolygon<Type, iDimensions> &abedFront, BSPPolygon<Type, iDimensions> &abedBack,
|
|
BSPVertexContainer<Type, iDimensions> &bvcFront, BSPVertexContainer<Type, iDimensions> &bvcBack);
|
|
|
|
/* Cut a polygon with a BSP tree. */
|
|
void CutPolygon(BSPPolygon<Type, iDimensions> &bpoPolygon, BSPNode<Type, iDimensions> &bn);
|
|
|
|
public:
|
|
CDynamicArray<BSPEdge<Type, iDimensions> > bc_abedInside; // edges of inside part of polygon
|
|
CDynamicArray<BSPEdge<Type, iDimensions> > bc_abedOutside; // edges of outside part of polygon
|
|
CDynamicArray<BSPEdge<Type, iDimensions> > bc_abedBorderInside; // edges of border part of polygon facing inwards
|
|
CDynamicArray<BSPEdge<Type, iDimensions> > bc_abedBorderOutside;// edges of border part of polygon facing outwards
|
|
|
|
/* Split a polygon with a plane. */
|
|
static inline BOOL SplitPolygon(BSPPolygon<Type, iDimensions> &bpoPolygon, const Plane<Type, iDimensions> &plPlane, size_t ulPlaneTag,
|
|
BSPPolygon<Type, iDimensions> &bpoFront, BSPPolygon<Type, iDimensions> &bpoBack);
|
|
|
|
/* Constructor for splitting a polygon with a BSP tree. */
|
|
BSPCutter(BSPPolygon<Type, iDimensions> &bpoPolygon, BSPNode<Type, iDimensions> &bnRoot);
|
|
/* Destructor. */
|
|
~BSPCutter(void);
|
|
};
|
|
|
|
|
|
#endif /* include-once check. */
|
|
|