octa.h File Reference

Objects representing the octree and its manipulation methods. More...

Go to the source code of this file.

Classes
class	cube
	The fundemental building block of the octree world, representing a 3D cube. More...
struct	selinfo
	A representation of a rectangular volume of cubes. More...
struct	block3
	A representation of a rectangular volume of cubes, with less metadata. More...
struct	editinfo
struct	undoent
struct	undoblock
class	cubeworld
	An object representing the entirety of an octree world. More...

Macros
#define	LOOP_XY(b)
#define	LOOP_XYZ(b, r, f)
#define	LOOP_SEL_XYZ(f)
#define	SELECT_CUBE(x, y, z)
#define	PROTECT_SEL(f)
#define	DIMENSION(orient)
#define	DIM_COORD(orient)

Functions
void	setcubefaces (cube &c, uint face)
	sets the faces to a given value face given
int	octadim (int d)

Variables
const int	Face_MaxVerts = 15
constexpr uint	faceempty = 0
constexpr uint	facesolid = 0x80808080
int	selchildcount
int	selchildmat
ivec	lu
int	lusize
cubeworld	rootworld

Detailed Description

Objects representing the octree and its manipulation methods.

This file describes objects that build the octal tree structure of the world (a cubeworld containing cube objects) as well as convenient representations of selections of cubes (in a Cartesian sense) that allow simpler reasoning about spatial relationships between nodes.

Macro Definition Documentation

DIM_COORD

#define DIM_COORD

(

orient

)

Value:

((orient)&1)

DIMENSION

#define DIMENSION

(

orient

)

Value:

((orient)>>1)

LOOP_SEL_XYZ

#define LOOP_SEL_XYZ

(

f

)

Value:

{ if(local) makeundo(); LOOP_XYZ(sel, sel.grid, f); rootworld.changed(sel); }

LOOP_XY

#define LOOP_XY

(

b

)

Value:

for(int y = 0; y < (b).s[C[DIMENSION((b).orient)]]; ++y) for(int x = 0; x < (b).s[R[DIMENSION((b).orient)]]; ++x)

LOOP_XYZ

#define LOOP_XYZ	(		b,
			r,
			f )

Value:

{ for(int z = 0; z < (b).s[D[DIMENSION((b).orient)]]; ++z) LOOP_XY((b)) { cube &c = blockcube(x,y,z,b,r); f; } }

PROTECT_SEL

#define PROTECT_SEL

(

f

)

Value:

{ undoblock *_u = newundocube(sel); f; if(_u) { pasteundoblock(_u->block(), _u->gridmap()); freeundo(_u); } }

SELECT_CUBE

#define SELECT_CUBE	(		x,
			y,
			z )

Value:

blockcube(x, y, z, sel, sel.grid)

Variable Documentation

faceempty

uint faceempty = 0

constexpr

internal engine data for the cube object, not accessible via external API all edges in the range (0,0)

facesolid

uint facesolid = 0x80808080

constexpr

all edges in the range (0,8)