#include <VoronoiMap.h>

Collaboration diagram for cVoronoiMap:

Public Member Functions
	cVoronoiMap (int a_Seed, int a_CellSize=128, int a_JitterSize=128)

void	FindNearestSeeds (int a_X, int a_Y, int &a_NearestSeedX, int &a_NearestSeedY, int &a_SecondNearestSeedX, int &a_SecondNearestSeedY)
	Finds the nearest and second nearest seeds, returns their coords. More...

int	GetValueAt (int a_X, int a_Y)
	Returns the value in the cell into which the specified point lies. More...

int	GetValueAt (int a_X, int a_Y, int &a_MinDistance)
	Returns the value in the cell into which the specified point lies, and the distance to the nearest Voronoi seed. More...

int	GetValueAt (int a_X, int a_Y, int &a_NearestSeedX, int &a_NearestSeedY, int &a_MinDist2)
	Returns the value in the cell into which the specified point lies, and the distances to the 2 nearest Voronoi seeds. More...

void	SetCellSize (int a_CellSize)
	Sets both the cell size and jitter size used for generating the Voronoi seeds. More...

void	SetJitterSize (int a_JitterSize)
	Sets the jitter size. More...

void	SetOddRowOffset (int a_OddRowOffset)
	Sets the offset that is added to each odd row of cells. More...

Protected Member Functions
void	UpdateCell (int a_CellX, int a_CellZ)
	Updates the cached cell seeds to match the specified cell. More...

Protected Attributes
int	m_CellSize
	Size of the Voronoi cells (avg X / Y distance between the seeds). More...

int	m_CurrentCellX
	The X coordinate of the currently cached cell neighborhood. More...

int	m_CurrentCellZ
	The Z coordinate of the currently cached cell neighborhood. More...

int	m_JitterSize
	The amount that the cell seeds may be offset from the grid. More...

cNoise	m_Noise1
	The noise used for generating Voronoi seeds. More...

cNoise	m_Noise2

cNoise	m_Noise3

int	m_OddRowOffset
	The constant amount that the cell seeds of every odd row will be offset from the grid. More...

int	m_SeedX [5][5]
	The seeds of cells around m_CurrentCellX, m_CurrentCellZ, X-coords. More...

int	m_SeedZ [5][5]
	The seeds of cells around m_CurrentCellX, m_CurrentCellZ, X-coords. More...

Detailed Description

Definition at line 18 of file VoronoiMap.h.

Constructor & Destructor Documentation

◆ cVoronoiMap()

cVoronoiMap::cVoronoiMap	(	int	a_Seed,
		int	a_CellSize = `128`,
		int	a_JitterSize = `128`
	)

Definition at line 13 of file VoronoiMap.cpp.

Member Function Documentation

◆ FindNearestSeeds()

void cVoronoiMap::FindNearestSeeds	(	int	a_X,
		int	a_Y,
		int &	a_NearestSeedX,
		int &	a_NearestSeedY,
		int &	a_SecondNearestSeedX,
		int &	a_SecondNearestSeedY
	)

Finds the nearest and second nearest seeds, returns their coords.

Definition at line 131 of file VoronoiMap.cpp.

◆ GetValueAt() [1/3]

int cVoronoiMap::GetValueAt	(	int	a_X,
		int	a_Y
	)

Returns the value in the cell into which the specified point lies.

Definition at line 60 of file VoronoiMap.cpp.

◆ GetValueAt() [2/3]

int cVoronoiMap::GetValueAt	(	int	a_X,
		int	a_Y,
		int &	a_MinDistance
	)

Returns the value in the cell into which the specified point lies, and the distance to the nearest Voronoi seed.

Definition at line 70 of file VoronoiMap.cpp.

◆ GetValueAt() [3/3]

int cVoronoiMap::GetValueAt	(	int	a_X,
		int	a_Y,
		int &	a_NearestSeedX,
		int &	a_NearestSeedY,
		int &	a_MinDist2
	)

Returns the value in the cell into which the specified point lies, and the distances to the 2 nearest Voronoi seeds.

Uses a cache.

Definition at line 82 of file VoronoiMap.cpp.

◆ SetCellSize()

void cVoronoiMap::SetCellSize ( int a_CellSize )

Sets both the cell size and jitter size used for generating the Voronoi seeds.

Definition at line 29 of file VoronoiMap.cpp.

◆ SetJitterSize()

void cVoronoiMap::SetJitterSize ( int a_JitterSize )

Sets the jitter size.

Clamps it to current cell size.

Definition at line 42 of file VoronoiMap.cpp.

◆ SetOddRowOffset()

void cVoronoiMap::SetOddRowOffset ( int a_OddRowOffset )

Sets the offset that is added to each odd row of cells.

This offset makes the voronoi cells align to a non-grid. Clamps the value to [-m_CellSize, +m_CellSize].

Definition at line 51 of file VoronoiMap.cpp.

◆ UpdateCell()

void cVoronoiMap::UpdateCell	(	int	a_CellX,
		int	a_CellZ
	)

protected

Updates the cached cell seeds to match the specified cell.

Noop if cell pos already matches. Updates m_SeedX and m_SeedZ.

Definition at line 183 of file VoronoiMap.cpp.

Member Data Documentation

◆ m_CellSize

int cVoronoiMap::m_CellSize

protected

Size of the Voronoi cells (avg X / Y distance between the seeds).

Expected to be at least 2.

Definition at line 63 of file VoronoiMap.h.

◆ m_CurrentCellX

int cVoronoiMap::m_CurrentCellX

protected

The X coordinate of the currently cached cell neighborhood.

Definition at line 75 of file VoronoiMap.h.

◆ m_CurrentCellZ

int cVoronoiMap::m_CurrentCellZ

protected

The Z coordinate of the currently cached cell neighborhood.

Definition at line 78 of file VoronoiMap.h.

◆ m_JitterSize

int cVoronoiMap::m_JitterSize

protected

The amount that the cell seeds may be offset from the grid.

Expected to be at least 1 and less than m_CellSize.

Definition at line 67 of file VoronoiMap.h.

◆ m_Noise1

cNoise cVoronoiMap::m_Noise1

protected

The noise used for generating Voronoi seeds.

Definition at line 58 of file VoronoiMap.h.

◆ m_Noise2

cNoise cVoronoiMap::m_Noise2

protected

Definition at line 59 of file VoronoiMap.h.

◆ m_Noise3

cNoise cVoronoiMap::m_Noise3

protected

Definition at line 60 of file VoronoiMap.h.

◆ m_OddRowOffset

int cVoronoiMap::m_OddRowOffset

protected

The constant amount that the cell seeds of every odd row will be offset from the grid.

This allows us to have non-rectangular grids. Expected to be between -m_CellSize and +m_CellSize.

Definition at line 72 of file VoronoiMap.h.

◆ m_SeedX

int cVoronoiMap::m_SeedX[5][5]

protected

The seeds of cells around m_CurrentCellX, m_CurrentCellZ, X-coords.

Definition at line 81 of file VoronoiMap.h.

◆ m_SeedZ

int cVoronoiMap::m_SeedZ[5][5]

protected

The seeds of cells around m_CurrentCellX, m_CurrentCellZ, X-coords.

Definition at line 84 of file VoronoiMap.h.

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

src/VoronoiMap.h
src/VoronoiMap.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ cVoronoiMap()

Member Function Documentation

◆ FindNearestSeeds()

◆ GetValueAt() [1/3]

◆ GetValueAt() [2/3]

◆ GetValueAt() [3/3]

◆ SetCellSize()

◆ SetJitterSize()

◆ SetOddRowOffset()

◆ UpdateCell()

Member Data Documentation

◆ m_CellSize

◆ m_CurrentCellX

◆ m_CurrentCellZ

◆ m_JitterSize

◆ m_Noise1

◆ m_Noise2

◆ m_Noise3

◆ m_OddRowOffset

◆ m_SeedX

◆ m_SeedZ