heronarts.lx.blend

Class LXBlend

java.lang.Object

heronarts.lx.LXComponent

heronarts.lx.LXModulatorComponent

heronarts.lx.blend.LXBlend

All Implemented Interfaces:

LXLoopTask, LXPath, LXSerializable, LXParameterListener

Direct Known Subclasses:

DissolveBlend, LXBlend.FunctionalBlend

public abstract class LXBlend
extends LXModulatorComponent

An LXBlend is a loop-based implementation of a compositing algorithm. Two color buffers are blended together using some logic, typically a standard alpha-compositing technique. However, more complex blend modes may be authored, taking into account position information from the model, for instance.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LXBlend.FunctionalBlend

Nested classes/interfaces inherited from class heronarts.lx.LXModulatorComponent

LXModulatorComponent.Profiler

Nested classes/interfaces inherited from class heronarts.lx.LXComponent

LXComponent.Placeholder, LXComponent.Renamable

Nested classes/interfaces inherited from interface heronarts.lx.LXSerializable

LXSerializable.Utils

Field Summary

Fields inherited from class heronarts.lx.LXModulatorComponent

modulators, profiler

Fields inherited from class heronarts.lx.LXComponent

controlSurfaceSemaphore, KEY_CLASS, KEY_COMPONENT_ID, KEY_ID, KEY_PARAMETER_PATH, KEY_PATH, label, lx, modulationColor

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	LXBlend(LX lx)

Method Summary

Modifier and Type	Method and Description
abstract void	blend(int[] dst, int[] src, double alpha, int[] output) Blends the src buffer onto the destination buffer at the specified alpha amount.
void	blend(int[] dst, int[] src, double alpha, LXBuffer buffer)
String	getLabel() Gets the name of this blend.
String	getName() Returns the name of this blend, to be shown in UI
void	lerp(int[] from, int[] to, double amt, int[] output) Transitions from one buffer to another.
void	onActive() Subclasses may override this method.
void	onInactive() Subclasses may override this method.
LXBlend	setName(String name) Sets name of this blend mode
String	toString() Name of the blend

Methods inherited from class heronarts.lx.LXModulatorComponent

addModulator, addModulator, addModulator, constructProfiler, dispose, getModulator, getModulators, loop, moveModulator, removeModulator, startModulator

Methods inherited from class heronarts.lx.LXComponent

addArray, addChild, addInternalParameter, addParameter, addParameter, contains, copyParameters, getChild, getComponentName, getComponentName, getComponentName, getId, getLX, getOscAddress, getOscLabel, getOscPath, getParameter, getParameters, getParent, getPath, handleOscMessage, load, loadParameters, onParameterChanged, removeParameter, removeParameter, save, saveParameters, setParent, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface heronarts.lx.LXPath

get, get, getCanonicalLabel, getCanonicalLabel, getCanonicalPath, getCanonicalPath, getComponent, getComponent, getParameter, getParameter

Constructor Detail

LXBlend

protected LXBlend(LX lx)

Method Detail

setName

public LXBlend setName(String name)

Sets name of this blend mode

Parameters:

name - UI name of blend

Returns:

this

getName

public String getName()

Returns the name of this blend, to be shown in UI

Returns:

Blend name

getLabel

public String getLabel()

Gets the name of this blend.

Specified by:

getLabel in interface LXPath

Overrides:

getLabel in class LXComponent

Returns:

Label for this component

toString

public String toString()

Name of the blend

Overrides:

toString in class LXComponent

Returns:

Debug string identifying this component

blend

public void blend(int[] dst,
                  int[] src,
                  double alpha,
                  LXBuffer buffer)

blend

public abstract void blend(int[] dst,
                           int[] src,
                           double alpha,
                           int[] output)

Blends the src buffer onto the destination buffer at the specified alpha amount.

Parameters:

dst - Destination buffer (lower layer)

src - Source buffer (top layer)

alpha - Alpha blend, from 0-1

output - Output buffer, which may be the same as src or dst

lerp

public void lerp(int[] from,
                 int[] to,
                 double amt,
                 int[] output)

Transitions from one buffer to another. By default, this is used by first blending from-to with alpha 0-1, then blending to-from with alpha 1-0. Blends which are asymmetrical may override this method for custom functionality. This method is used by pattern transitions on channels as well as the crossfader.

Parameters:

from - First buffer

to - Second buffer

amt - Interpolation from-to (0-1)

output - Output buffer, which may be the same as from or to

onActive

public void onActive()

Subclasses may override this method. It will be invoked when the blend is about to become active for a transition. Blends may take care of any initialization needed or reset parameters if desired. Note that a blend used on a channel fader or crossfader will only receive this message once.

onInactive

public void onInactive()

Subclasses may override this method. It will be invoked when the transition is no longer active. Resources may be freed if desired. Note that this method will only be received once blends used on channel faders or crossfaders.