particleengine

Class Emitter

java.lang.Object

particleengine.IEmitter

particleengine.Emitter

public class Emitter
extends IEmitter

Default particle generator that implements IEmitter. Initialize an Emitter using Particles.createCopy(particleengine.Emitter, com.fs.starfarer.api.graphics.SpriteAPI, int, int, int). After setting the emitter's properties, generate particles using Particles.burst(particleengine.IEmitter, int) or Particles.stream(particleengine.IEmitter, int, float, float).

Method Summary

Methods

Modifier and Type	Method and Description
void	acceleration(float minX, float maxX, float minY, float maxY) Sets the acceleration of generated particles along the emitter's axes.
void	acceleration(org.lwjgl.util.vector.Vector2f min, org.lwjgl.util.vector.Vector2f max) Sets the component-wise minimum and maximum accelerations of generated particles along the emitter's axes.
void	alphaShift(float minA, float maxA)
void	circleAcceleration(float innerRadius, float outerRadius) Adds circular randomness to the accelerations of particles generated by this Emitter.
void	circleOffset(float innerRadius, float outerRadius) Adds circular randomness to the positions of particles generated by this Emitter.
void	circleVelocity(float innerRadius, float outerRadius) Adds circular randomness to the velocities of particles generated by this Emitter.
void	color(java.awt.Color color)
void	color(float[] rgba)
void	color(float r, float g, float b, float a) Sets the initial color of particles generated by this Emitter.
void	colorHSVA(float[] hsva) Sets the initial color of particles generated by this Emitter.
void	colorShiftHSVA(float[] hsva)
void	colorShiftHSVA(float[] minHSVA, float[] maxHSVA)
void	colorShiftHSVA(float h, float s, float v, float a) Adds color shift to particles, allowing individual particles to change color over time.
void	colorShiftHSVA(float minH, float maxH, float minS, float maxS, float minV, float maxV, float minA, float maxA) Adds color shift to particles, allowing individual particles to change color over time.
void	colorValueShift(float minV, float maxV)
void	facing(float minAngle, float maxAngle) Sets minimum and maximum initial facing angles of particles generated by this Emitter.
void	fadeTime(float minFadeIn, float maxFadeIn, float minFadeOut, float maxFadeOut) Sets the fade-in and fade-out times for particles generated by this Emitter.
void	fromJSON(org.json.JSONObject json) Loads properties from a JSON object.
int	getBlendDestinationFactor()
int	getBlendFunc()
int	getBlendSourceFactor()
com.fs.starfarer.api.combat.CombatEngineLayers	getLayer()
org.lwjgl.util.vector.Vector2f	getLocation()
float	getRenderRadius()
com.fs.starfarer.api.graphics.SpriteAPI	getSprite()
float	getXDir()
void	growthAcceleration(float minAcceleration, float maxAcceleration) Sets the growth acceleration of particles generated by this Emitter.
void	growthAcceleration(float minXAcceleration, float maxXAcceleration, float minYAcceleration, float maxYAcceleration) Same as growthAcceleration(float, float), but allows specification of x-scale and y-scale separately.
void	growthRate(float minRate, float maxRate) Sets the initial growth rate of particles generated by this Emitter.
void	growthRate(float minXRate, float maxXRate, float minYRate, float maxYRate) Same as growthRate(float, float), but allows specification of x-scale and y-scale separately.
void	hueShift(float minH, float maxH)
void	life(float minLife, float maxLife) Sets the minimum and maximum lifetime of particles generated by this Emitter.
void	offset(float minX, float maxX, float minY, float maxY) Sets the position of generated particles relative to this emitter's location.
void	offset(org.lwjgl.util.vector.Vector2f min, org.lwjgl.util.vector.Vector2f max) Sets the component-wise minimum and maximum positions of generated particles relative to this emitter's location, along the emitter's axes.
void	radialAcceleration(float minAcceleration, float maxAcceleration) Adds acceleration in the direction from the emitter's location to each individual particle's randomized position.
void	radialVelocity(float minVelocity, float maxVelocity) Adds velocity in the direction from the emitter's location to each individual particle's randomized position.
void	randomHSVA(float[] hsva)
void	randomHSVA(float h, float s, float v, float a) Randomizes the initial color of particles generated by this Emitter.
void	revolutionAcceleration(float minAcceleration, float maxAcceleration)
void	revolutionRate(float minRate, float maxRate) Causes particles to revolve around the emitter's location at the time of generation.
void	saturationShift(float minS, float maxS)
void	setAxis(float dir)
void	setAxis(org.lwjgl.util.vector.Vector2f xAxis) Sets the axes of this emitter's coordinate system.
void	setBlendMode(int sfactor, int dfactor, int blendMode) Sets the blend source factor, destination factor, and blending function.
void	setInactiveBorder(float amount) Sets the "render radius" of the emitter.
void	setLayer(com.fs.starfarer.api.combat.CombatEngineLayers layer) Sets the rendering layer of this emitter.
void	setLocation(float x, float y) Sets this emitter's location.
void	setLocation(org.lwjgl.util.vector.Vector2f location)
void	setSprite(com.fs.starfarer.api.graphics.SpriteAPI sprite) Sets the sprite used by this emitter.
void	setSprite(java.lang.String loc) Sets the sprite used by this emitter.
void	setSyncSize(boolean sync) Sets whether generated particles should always have the same x and y scale.
void	sinusoidalMotionX(float minAmplitude, float maxAmplitude, float minFrequency, float maxFrequency, float minPhase, float maxPhase) Adds periodic motion along the emitter's x-axis.
void	sinusoidalMotionY(float minAmplitude, float maxAmplitude, float minFrequency, float maxFrequency, float minPhase, float maxPhase)
void	size(float minSize, float maxSize) Sets the size of particles generated by this Emitter.
void	size(float minXSize, float maxXSize, float minYSize, float maxYSize) Same as size(float, float), but allows specification of x-scale and y-scale separately.
void	turnAcceleration(float minAcceleration, float maxAcceleration) Sets minimum and maximum turn rate accelerations for particles generated by this Emitter.
void	turnRate(float minRate, float maxRate) Sets minimum and maximum initial turn rates for particles generated by this Emitter.
void	velocity(float minX, float maxX, float minY, float maxY) Sets the velocity of generated particles along the emitter's axes.
void	velocity(org.lwjgl.util.vector.Vector2f min, org.lwjgl.util.vector.Vector2f max) Sets the component-wise minimum and maximum velocities of generated particles along the emitter's axes.
void	writeJSON(java.lang.String name) Writes this emitter's properties to a file with the given name.

Methods inherited from class particleengine.IEmitter

disableDynamicAnchoring, enableDynamicAnchoring

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

setInactiveBorder

public void setInactiveBorder(float amount)

Sets the "render radius" of the emitter. Formally, if an emitter is outside the box [-amount,W+amount]x[-amount,H+amount] relative to the viewport when particles would have been generated, that generate call is ignored.

Parameters:

amount - Border amount, in world units.

setLayer

public void setLayer(com.fs.starfarer.api.combat.CombatEngineLayers layer)

Sets the rendering layer of this emitter. See CombatEngineLayers for an ordered list of possible values.

Parameters:

layer - Combat layer to render particles to

setLocation

public void setLocation(float x,
               float y)

Sets this emitter's location. To set the starting position of particles relative to this emitter, use offset(float, float, float, float).

Parameters:

x - Initial x-position, in absolute world units.

y - Initial y-position, in absolute world units.

setLocation

public void setLocation(org.lwjgl.util.vector.Vector2f location)

See Also:

setLocation(float, float)

setAxis

public void setAxis(org.lwjgl.util.vector.Vector2f xAxis)

Sets the axes of this emitter's coordinate system. Defaults to global axes, i.e. (0, 1) and (1, 0).

Parameters:

xAxis - The emitter's x-axis. Doesn't need to be normalized. If degenerate, will be set to the default value (0, 1). The emitter's y-axis will automatically be set to the unit vector that is counterclockwise perpendicular to xAxis.

setAxis

public void setAxis(float dir)

See Also:

setAxis(Vector2f)

setSprite

public void setSprite(com.fs.starfarer.api.graphics.SpriteAPI sprite)

Sets the sprite used by this emitter.

Parameters:

sprite - Sprite to use. Can be null.

setSprite

public void setSprite(java.lang.String loc)

Sets the sprite used by this emitter.

Parameters:

loc - Location of sprite to use. If null, will set the sprite to null.

setBlendMode

public void setBlendMode(int sfactor,
                int dfactor,
                int blendMode)

Sets the blend source factor, destination factor, and blending function.

Parameters:

sfactor - Source factor, e.g. GL11.GL_SRC_ALPHA.

dfactor - Destination factor, e.g. GL11.GL_ONE_MINUS_SRC_ALPHA.

blendMode - Blending operator, e.g. GL14.GL_FUNC_ADD.

life

public void life(float minLife,
        float maxLife)

Sets the minimum and maximum lifetime of particles generated by this Emitter. Particles exceeding their lifespan are not rendered.

Parameters:

minLife - Minimum lifetime, in seconds.

maxLife - Maximum lifetime, in seconds.

fadeTime

public void fadeTime(float minFadeIn,
            float maxFadeIn,
            float minFadeOut,
            float maxFadeOut)

Sets the fade-in and fade-out times for particles generated by this Emitter. Particles' alpha values rise linearly from 0 to 1 within the fade-in window, and fall linearly from 1 to 0 within the fade-out window.

Parameters:

minFadeIn - Minimum fade-in time, in seconds.

maxFadeIn - Maximum fade-in time, in seconds.

minFadeOut - Minimum fade-out time, in seconds.

maxFadeOut - Maximum fade-out time, in seconds.

offset

public void offset(float minX,
          float maxX,
          float minY,
          float maxY)

Sets the position of generated particles relative to this emitter's location. This position is defined along the emitter's axes.

Parameters:

minX - Minimum offset of particles along the emitter's x-axis in world units.

maxX - Maximum offset of particles along the emitter's x-axis in world units.

minY - Minimum offset of particles along the emitter's y-axis in world units.

maxY - Maximum offset of particles along the emitter's y-axis in world units.

offset

public void offset(org.lwjgl.util.vector.Vector2f min,
          org.lwjgl.util.vector.Vector2f max)

Sets the component-wise minimum and maximum positions of generated particles relative to this emitter's location, along the emitter's axes.

Parameters:

min - Minimum x and y offsets.

max - Maximum x and y offsets.

velocity

public void velocity(float minX,
            float maxX,
            float minY,
            float maxY)

Sets the velocity of generated particles along the emitter's axes.

Parameters:

minX - Minimum velocity of particles along the emitter's x-axis in world units / s.

maxX - Maximum velocity of particles along the emitter's x-axis in world units / s.

minY - Minimum velocity of particles along the emitter's y-axis in world units / s.

maxY - Maximum velocity of particles along the emitter's y-axis in world units / s.

velocity

public void velocity(org.lwjgl.util.vector.Vector2f min,
            org.lwjgl.util.vector.Vector2f max)

Sets the component-wise minimum and maximum velocities of generated particles along the emitter's axes.

Parameters:

min - Minimum x and y velocities.

max - Maximum x and y velocities.

acceleration

public void acceleration(float minX,
                float maxX,
                float minY,
                float maxY)

Sets the acceleration of generated particles along the emitter's axes.

Parameters:

minX - Minimum acceleration of particles along the emitter's x-axis in world units / s^2.

maxX - Maximum acceleration of particles along the emitter's x-axis in world units / s^2.

minY - Minimum acceleration of particles along the emitter's y-axis in world units / s^2.

maxY - Maximum acceleration of particles along the emitter's y-axis in world units / s^2.

acceleration

public void acceleration(org.lwjgl.util.vector.Vector2f min,
                org.lwjgl.util.vector.Vector2f max)

Sets the component-wise minimum and maximum accelerations of generated particles along the emitter's axes.

Parameters:

min - Minimum x and y accelerations.

max - Maximum x and y accelerations.

circleOffset

public void circleOffset(float innerRadius,
                float outerRadius)

Adds circular randomness to the positions of particles generated by this Emitter. Generated particles will have a random vector inside an annulus with inner radius innerRadius and outer radius outerRadius added to their positions.

Parameters:

innerRadius - Inner radius of annulus inside which a random vector will be chosen to be added to each particle's starting position.

outerRadius - Outer radius of annulus inside which a random vector will be chosen to be added to each particle's starting position.

circleVelocity

public void circleVelocity(float innerRadius,
                  float outerRadius)

Adds circular randomness to the velocities of particles generated by this Emitter. Generated particles will have a random vector inside an annulus with inner radius innerRadius and outer radius outerRadius added to their velocities.

Parameters:

innerRadius - Inner radius of annulus inside which a random vector will be chosen to be added to each particle's initial velocity.

outerRadius - Outer radius of annulus inside which a random vector will be chosen to be added to each particle's initial velocity.

circleAcceleration

public void circleAcceleration(float innerRadius,
                      float outerRadius)

Adds circular randomness to the accelerations of particles generated by this Emitter. Generated particles will have a random vector inside an annulus with inner radius innerRadius and outer radius outerRadius added to their accelerations.

Parameters:

innerRadius - Inner radius of annulus inside which a random vector will be chosen to be added to each particle's initial acceleration.

outerRadius - Outer radius of annulus inside which a random vector will be chosen to be added to each particle's initial acceleration.

facing

public void facing(float minAngle,
          float maxAngle)

Sets minimum and maximum initial facing angles of particles generated by this Emitter. Each particle will have an initial facing randomly chosen between the two given angles. A facing direction of 0 is oriented along this emitter's x-axis.

Parameters:

minAngle - Minimum initial facing direction, in degrees.

maxAngle - Maximum initial facing direction, in degrees.

turnRate

public void turnRate(float minRate,
            float maxRate)

Sets minimum and maximum initial turn rates for particles generated by this Emitter. Each particle will have an initial turn rate randomly chosen between the two given numbers.

Parameters:

minRate - Minimum initial turn rate, in degrees / s.

maxRate - Maximum initial turn rate, in degrees / s.

turnAcceleration

public void turnAcceleration(float minAcceleration,
                    float maxAcceleration)

Sets minimum and maximum turn rate accelerations for particles generated by this Emitter. Each particle will have a turn rate acceleration randomly chosen between the two given numbers.

Parameters:

minAcceleration - Minimum initial turn rate acceleration, in degrees / s^2.

maxAcceleration - Maximum initial turn rate acceleration, in degrees / s^2.

size

public void size(float minSize,
        float maxSize)

Sets the size of particles generated by this Emitter. Each particle is given a size randomly chosen between minSize and maxSize.

Parameters:

minSize - Minimum initial particle size, in world units.

maxSize - Maximum initial particle size, in world units.

growthRate

public void growthRate(float minRate,
              float maxRate)

Sets the initial growth rate of particles generated by this Emitter. Each particle is given a growth rate randomly chosen between minRate and maxRate.

Parameters:

minRate - Minimum initial particle growth rate, in world units / s.

maxRate - Maximum initial particle growth rate, in world units / s.

growthAcceleration

public void growthAcceleration(float minAcceleration,
                      float maxAcceleration)

Sets the growth acceleration of particles generated by this Emitter. Each particle is given a growth acceleration randomly chosen between minAcceleration and maxAcceleration.

Parameters:

minAcceleration - Minimum particle growth acceleration, in world units / s^2.

maxAcceleration - Maximum particle growth acceleration, in world units / s^2.

size

public void size(float minXSize,
        float maxXSize,
        float minYSize,
        float maxYSize)

Same as size(float, float), but allows specification of x-scale and y-scale separately.

growthRate

public void growthRate(float minXRate,
              float maxXRate,
              float minYRate,
              float maxYRate)

Same as growthRate(float, float), but allows specification of x-scale and y-scale separately.

growthAcceleration

public void growthAcceleration(float minXAcceleration,
                      float maxXAcceleration,
                      float minYAcceleration,
                      float maxYAcceleration)

Same as growthAcceleration(float, float), but allows specification of x-scale and y-scale separately.

setSyncSize

public void setSyncSize(boolean sync)

Sets whether generated particles should always have the same x and y scale. If this is set, then only the emitter's x values will be taken into account for size, growth rate, and growth acceleration.

Parameters:

sync - If true, ensures that generated particles have the same x and y sizes, growth rates, and growth accelerations. If false, these properties will have their x and y values set independently.

color

public void color(float r,
         float g,
         float b,
         float a)

Sets the initial color of particles generated by this Emitter.

Parameters:

r - Initial red value, between 0 and 1.

g - Initial green value, between 0 and 1.

b - Initial blue value, between 0 and 1.

a - Initial alpha value, between 0 and 1.

color

public void color(java.awt.Color color)

See Also:

color(float, float, float, float)

color

public void color(float[] rgba)

See Also:

color(float, float, float, float)

colorHSVA

public void colorHSVA(float[] hsva)

Sets the initial color of particles generated by this Emitter. emitter in HSVA space.

Parameters:

hsva - 4-element float array containing hue, saturation, color value, and alpha.

randomHSVA

public void randomHSVA(float h,
              float s,
              float v,
              float a)

Randomizes the initial color of particles generated by this Emitter. Each particle has its initial hue modified by a number in the range [-h/2, h/2]. The particle's other hsva channels are similarly randomized. Resulting hue values outside [0, 360) wrap around. Resulting saturation, value, and alpha values are clamped to [0, 1].

Parameters:

h - Hue randomization, in degrees. Hue is between 0 and 360.

s - Saturation randomization. Saturation is between 0 and 1.

v - Value randomization. Value is between 0 and 1.

a - Alpha randomization. Alpha is between 0 and 1.

randomHSVA

public void randomHSVA(float[] hsva)

See Also:

randomHSVA(float, float, float, float)

colorShiftHSVA

public void colorShiftHSVA(float h,
                  float s,
                  float v,
                  float a)

Adds color shift to particles, allowing individual particles to change color over time. If the resulting hue value falls outside [0, 360), it will wrap around. Resulting saturation, value, and alpha values are clamped to [0, 1].

Parameters:

h - Hue shift per second, in degrees

s - Saturation shift per second

v - Value shift per second

a - Alpha shift per second

colorShiftHSVA

public void colorShiftHSVA(float[] hsva)

See Also:

colorShiftHSVA(float, float, float, float)

colorShiftHSVA

public void colorShiftHSVA(float minH,
                  float maxH,
                  float minS,
                  float maxS,
                  float minV,
                  float maxV,
                  float minA,
                  float maxA)

Adds color shift to particles, allowing individual particles to change color over time. Each particle is given a random hue velocity between minH and maxH, a random saturation velocity between minS and maxS, a random value velocity between minV and maxV, and a random alpha velocity between minA and maxA. If the resulting hue value falls outside [0, 360), it will wrap around. Resulting saturation, value, and alpha values are clamped to [0, 1].

Parameters:

minH - Minimum hue shift per second, in degrees

maxH - Maximum hue shift per second, in degrees

minS - Minimum saturation shift per second

maxS - Maximum saturation shift per second

minV - Minimum value shift per second

maxV - Maximum value shift per second

minA - Minimum alpha shift per second

maxA - Maximum alpha shift per second

colorShiftHSVA

public void colorShiftHSVA(float[] minHSVA,
                  float[] maxHSVA)

See Also:

colorShiftHSVA(float, float, float, float, float, float, float, float)

hueShift

public void hueShift(float minH,
            float maxH)

See Also:

colorShiftHSVA(float, float, float, float, float, float, float, float)

saturationShift

public void saturationShift(float minS,
                   float maxS)

See Also:

colorShiftHSVA(float, float, float, float, float, float, float, float)

colorValueShift

public void colorValueShift(float minV,
                   float maxV)

See Also:

colorShiftHSVA(float, float, float, float, float, float, float, float)

alphaShift

public void alphaShift(float minA,
              float maxA)

See Also:

colorShiftHSVA(float, float, float, float, float, float, float, float)

radialVelocity

public void radialVelocity(float minVelocity,
                  float maxVelocity)

Adds velocity in the direction from the emitter's location to each individual particle's randomized position. This effect causes particles to be pushed outwards from the emitter's location. No effect on emitters with no offset or positionSpread.

Parameters:

minVelocity - Minimum outward radial velocity, in world units / s.

maxVelocity - Maximum outward radial velocity, in world units / s.

radialAcceleration

public void radialAcceleration(float minAcceleration,
                      float maxAcceleration)

Adds acceleration in the direction from the emitter's location to each individual particle's randomized position.

Parameters:

minAcceleration - Minimum outward radial acceleration, in world units / s^2.

maxAcceleration - Maximum outward radial acceleration, in world units / s^2.

See Also:

radialVelocity(float, float)

revolutionRate

public void revolutionRate(float minRate,
                  float maxRate)

Causes particles to revolve around the emitter's location at the time of generation. Note that updates to the emitter's location after a particle has already been generated are not received. This effect is applied after all other movement effects.

Parameters:

minRate - Minimum initial revolution velocity, in degrees / s.

maxRate - Maximum initial revolution velocity, in degrees / s.

revolutionAcceleration

public void revolutionAcceleration(float minAcceleration,
                          float maxAcceleration)

Parameters:

minAcceleration - Minimum revolution acceleration, in degrees / s^2.

maxAcceleration - Maximum revolution acceleration, in degrees / s^2.

See Also:

revolutionRate(float, float)

sinusoidalMotionX

public void sinusoidalMotionX(float minAmplitude,
                     float maxAmplitude,
                     float minFrequency,
                     float maxFrequency,
                     float minPhase,
                     float maxPhase)

Adds periodic motion along the emitter's x-axis. For each particle, if its phase is non-zero, will also translate that particle so that its initial position is unchanged at t = 0.

Parameters:

minAmplitude - Minimum amplitude of periodic motion along the emitter's x-axis, in world units.

maxAmplitude - Maximum amplitude of periodic motion along the emitter's x-axis, in world units.

minFrequency - Minimum number of complete cycles per second along the emitter's x-axis.

maxFrequency - Maximum of complete cycles per second along the emitter's x-axis.

minPhase - Minimum initial phase of periodic motion along the emitter's x-axis, in degrees.

maxPhase - Maximum initial phase of periodic motion along the emitter's x-axis, in degrees.

sinusoidalMotionY

public void sinusoidalMotionY(float minAmplitude,
                     float maxAmplitude,
                     float minFrequency,
                     float maxFrequency,
                     float minPhase,
                     float maxPhase)

Parameters:

minAmplitude - Minimum amplitude of periodic motion along the emitter's y-axis, in world units.

maxAmplitude - Maximum amplitude of periodic motion along the emitter's y-axis, in world units.

minFrequency - Minimum number of complete cycles per second along the emitter's y-axis.

maxFrequency - Maximum of complete cycles per second along the emitter's y-axis.

minPhase - Minimum initial phase of periodic motion along the emitter's y-axis, in degrees.

maxPhase - Maximum initial phase of periodic motion along the emitter's y-axis, in degrees.

See Also:

sinusoidalMotionX(float, float, float, float, float, float)

getLocation

public org.lwjgl.util.vector.Vector2f getLocation()

Specified by:

getLocation in class IEmitter

Returns:

Absolute location of this emitter, in world coordinates.

getSprite

public com.fs.starfarer.api.graphics.SpriteAPI getSprite()

Specified by:

getSprite in class IEmitter

Returns:

Sprite that particles from this emitter will have. Can be null, in which a default particle will be used.

getXDir

public float getXDir()

Specified by:

getXDir in class IEmitter

Returns:

Angle, in degrees, that this emitter's x-axis faces. If 0, then this emitter's axes coincides with global axes (x-axis facing to the right).

getBlendSourceFactor

public int getBlendSourceFactor()

Specified by:

getBlendSourceFactor in class IEmitter

Returns:

Source blend factor, e.g. GL11.GL_SRC_ALPHA.

getBlendDestinationFactor

public int getBlendDestinationFactor()

Specified by:

getBlendDestinationFactor in class IEmitter

Returns:

Destination blend factor, e.g. GL11.GL_ONE_MINUS_SRC_ALPHA.

getBlendFunc

public int getBlendFunc()

Specified by:

getBlendFunc in class IEmitter

Returns:

Blending operation, e.g. GL14.GL_FUNC_ADD.

getLayer

public com.fs.starfarer.api.combat.CombatEngineLayers getLayer()

Specified by:

getLayer in class IEmitter

Returns:

Layer particles should be rendered on.

getRenderRadius

public float getRenderRadius()

Specified by:

getRenderRadius in class IEmitter

Returns:

Distance from edge of screen beyond which particles are culled before generation. This applies to the emitter's location rather than individual particles' locations.

fromJSON

public void fromJSON(org.json.JSONObject json)
              throws org.json.JSONException

Loads properties from a JSON object.

Parameters:

json - JSON object to load from.

Throws:

org.json.JSONException - if the provided json is malformed.

writeJSON

public void writeJSON(java.lang.String name)

Writes this emitter's properties to a file with the given name. The directory is specified in particleengine.json.

Parameters:

name - File name to use