PictureEffects Xojo Plugin |

# GammaEffect Class

A class to change the gamma in a image then use the GammaFilter function.

MPImageFilter
GammaEffect

class GammaEffect implements

IGraphicsEffect

IGraphicsEffectInPlace

#### Properties

Blue | The gamma value for the blue color channel.
Green | The gamma value for the green color channel.
IgnoreAlpha | If set to true then the alpha channel of the source image will not be included in the destination image.
Mask | To limit the filtering to certain pixels then set a picture defining the mask to this parameter. Pass nil to this parameter if the filtering should not be limited to certain pixels.
Red | The gamma value for the red color channel.
CPUCoreCount (Inherited) (console safe) | Returns number of detected CPU cores on the running machine.
ErrorCode (Inherited) (console safe) | Returns error code after applying the effect. This value is a Constant defined in the PictureEffectsError module.
MultiprocessingHint (Inherited) (console safe) | Use this property to fine tune CPU usage for this algorithm. By default this property is set to zero (Automatic). This property accepts all constants that are defined in this class.
ProgressHandler (Inherited) (console safe) | Use this property to use a progress class to get progress feedback from this function. This class must be a class that Implements the IProgressHandler Interface which is defined in this plugin.

#### Methods

Apply | Applies the effect on a given 32 bit source image with a given 32 bit mask and returns the result to a new image.
Apply | Applies the effect on a given 32 bit source image with parameters that have been set on the class instance.
ApplyInPlace | Applies the effect in place on a given 32 bit source image with a given 32 bit mask.
ApplyInPlace | Applies the effect in place on a given 32 bit source image with parameters that have been set on the class instance.

#### Constants

CPU_USE_MACHINE_CORE_COUNT = -1 (Inherited) | Uses exactly the number of available CPU cores in the machine. (Available here means on-line CPU cores, some laptops can put CPU cores off line in low battery situations)
CPU_USE_AUTOMATIC = 0 (Inherited) | Takes into account number of available CPU cores on the Machine and also tries to select the fastest way based on developer rating for each algorithm and picture size. (In simple algorithms then the fastest path is sometimes 2 or 3 CPU cores and not 4 CPU cores because of the overhead of managing multiple cores). In more complex algorithms then 3 or 4 cores are almost always faster than 2 cores.
CPU_USE_1_CORE = 1 (Inherited) | Uses one CPU core.
CPU_USE_2_CORES = 2 (Inherited) | Uses two CPU cores. This setting will also work on machines with less than two CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_3_CORES = 3 (Inherited) | Uses three CPU cores. This setting will also work on machines with less than three CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_4_CORES = 4 (Inherited) | Uses four CPU cores. This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_5_CORES = 5 (Inherited) | Uses five CPU cores. This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_6_CORES = 6 (Inherited) | Uses six CPU cores. This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_7_CORES = 7 (Inherited) | Uses seven CPU cores. This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.
CPU_USE_8_CORES = 8 (Inherited) | Uses eight CPU cores. This setting will also work on machines with less than four CPU cores, but it will be slower or best case same speed as using the correct setting for such machine.

#### Supported Platforms:

- MacOS X Carbon
- MacOS X Cocoa 32 bit
- MacOS X Cocoa 64 bit
- Windows 32 bit
- Windows 64 bit
- Linux 32 bit
- Linux 64 bit
- Linux ARM