Direction Struct Reference

Collaboration diagram for Direction:

Public Types
typedef short int	value_t
typedef Dictionary< value_t, std::string >	dict_t

Static Public Member Functions
static bool	isDiagonal (value_t dir)

Static Public Attributes
static const value_t	NONE = 0
static const value_t	UP =1
static const value_t	UP_RIGHT =2
static const value_t	RIGHT =4
static const value_t	DOWN_RIGHT =8
static const value_t	DOWN =16
static const value_t	DOWN_LEFT =32
static const value_t	LEFT =64
static const value_t	UP_LEFT =128
static const value_t	RECTANGULAR = UP | RIGHT | DOWN | LEFT
static const value_t	DIAGONAL = UP_RIGHT | DOWN_RIGHT | DOWN_LEFT | UP_LEFT
static const dict_t	arrows
static const std::map< value_t, Position >	offset
	Opposite direction. More...

Member Data Documentation

arrows

const Direction::dict_t arrows

static

Initial value:

= {
        {NONE,       {"o"}},
        {UP,         {"↑"}},
        {UP_RIGHT,   {"↗"}},
        {RIGHT,      {"→"}},
        {DOWN_RIGHT, {"↘"}},
        {DOWN,       {"↓"}},
        {DOWN_LEFT,  {"↙"}},
        {LEFT,       {"←"}},
        {UP_LEFT,    {"↖"}}
}

offset

const std::map< Direction::value_t, Position > offset

static

Initial value:

= {
        {NONE,       { 0, 0}},
        {UP,         { 0,-1}},
        {UP_RIGHT,   {+1,-1}},
        {RIGHT,      {+1, 0}},
        {DOWN_RIGHT, {+1,+1}},
        {DOWN,       { 0,+1}},
        {DOWN_LEFT,  {-1,+1}},
        {LEFT,       {-1, 0}},
        {UP_LEFT,    {-1,-1}}
}

Opposite direction.

Turn 90 degrees left Turn 90 degrees right

static inline dir dir90CW(dir d){ return (d >> 2) | (d << 6); }

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The documentation for this struct was generated from the following files:

• src/drain/image/Direction.h
• src/drain/image/Direction.cpp