ParticleEmissionMaskCache Class Reference

Particle emission mask cache. More...

#include <ParticleSystem.h>

Public Member Functions
void	bakeEmissionMask (std::string_view maskId, std::string_view texturePath, float alphaThreshold=0.5F, bool inverted=false, int inbetweenSamples=1)
	Bakes a particle emission mask from texture data on cpu and stores it in memory by it's name.
void	bakeEmissionMask (std::string_view maskId, Image *imageTexture, float alphaThreshold=0.5F, bool inverted=false, int inbetweenSamples=1)
	Bakes a particle emission mask from texture data on cpu and stores it in memory by it's name.
const ParticleEmissionMaskDesc &	getEmissionMask (uint32_t fourccId)
	Returns a baked mask with the specified name if it exists.
const ParticleEmissionMaskDesc &	getEmissionMask (std::string_view maskId)
	Returns a baked mask with the specified name if it exists.
void	removeMask (std::string_view maskId)
	Removes a baked mask and releases the data from memory with the specified name if it exists.
void	removeAllMasks ()
	Remove all baked masks and releases their data from memory.

Detailed Description

Particle emission mask cache.

Since

axmol-1.0.0b8

Member Function Documentation

bakeEmissionMask() [1/2]

void bakeEmissionMask	(	std::string_view	maskId,
		std::string_view	texturePath,
		float	alphaThreshold = 0.5F,
		bool	inverted = false,
		int	inbetweenSamples = 1 )

Bakes a particle emission mask from texture data on cpu and stores it in memory by it's name.

If the mask already exists then it will be overwritten.

Parameters

maskId	The id of the mask, FOURCC starts with '#', such as "#abcd"
texturePath	Path of the texture that holds alpha data.
alphaThreshold	The threshold at which pixels are picked, If a pixel's alpha channel is greater than alphaThreshold then it will be picked.
inverted	Inverts the pick condition so that If a pixel's alpha channel is lower than alphaThreshold then it will be picked.
inbetweenSamples	How many times should pixels be filled inbetween, this value should be increased If you're planning to scale the emission shape up. WARNING: it will use more memory.

bakeEmissionMask() [2/2]

void bakeEmissionMask	(	std::string_view	maskId,
		Image *	imageTexture,
		float	alphaThreshold = 0.5F,
		bool	inverted = false,
		int	inbetweenSamples = 1 )

Bakes a particle emission mask from texture data on cpu and stores it in memory by it's name.

If the mask already exists then it will be overwritten.

Parameters

maskId	The id of the mask, FOURCC starts with '#', such as "#abcd"
imageTexture	Image object containing texture data with alpha channel.
alphaThreshold	The threshold at which pixels are picked, If a pixel's alpha channel is greater than alphaThreshold then it will be picked.
inverted	Inverts the pick condition so that If a pixel's alpha channel is lower than alphaThreshold then it will be picked.
inbetweenSamples	How many times should pixels be filled inbetween, this value should be increased If you're planning to scale the emission shape up. WARNING: it will use more memory.

getEmissionMask() [1/2]

const ParticleEmissionMaskDesc & getEmissionMask

(

uint32_t

fourccId

)

Returns a baked mask with the specified name if it exists.

otherwise, it will return a dummy mask.

Parameters

fourccId

The unsigned integer id of the mask.

getEmissionMask() [2/2]

const ParticleEmissionMaskDesc & getEmissionMask

(

std::string_view

maskId

)

Returns a baked mask with the specified name if it exists.

otherwise, it will return a dummy mask.

Parameters

maskId

The id of the mask, FOURCC starts with '#', such as "#abcd"

removeMask()

void removeMask

(

std::string_view

maskId

)

Removes a baked mask and releases the data from memory with the specified name if it exists.

Parameters

maskId

The id of the mask, FOURCC starts with '#', such as "#abcd"

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

• ParticleSystem.h