PictureEffectsRaw Xojo Plugin

MapEffectRaw Class (console safe)

The map effect is a low level effect for developers to make simple pixel mapping. This effect does the same as the Xojo's built in RGBSurface.Transform function, except this class makes use of the PictureEffects multi-core processing, as well as works on RawBitmap instead of Picture object.

Applies a one-to-one pixel transformation to all pixels of RawBitmap.

Specify the transformation via either of three lookup tables, red, green, and blue, or one lookup table to apply to all three channels.

Each map parameter is an 256 element array of UInt8. The transformation works as follows: For each pixel, the pixel’s RGB value is used as an index into the map arrays and the value found becomes the new R, G, or B value for the pixel.
For example, if you set up a map such that red(i)=255-i, then using this function will invert the image.

This class supports use of multiple CPU cores.

MPImageFilterRaw
   MapEffectRaw

class MapEffectRaw implements

IRawBitmapProcessor

Properties

Mask (console safe) Sets mask for the operation if masking is wanted.
Canceled (Inherited) (console safe) If this one returns true then the effects execution was canceled by a Progress handler.
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 PictureEffectsRawError 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 (console safe) Applies the effect on a RawBitmap image with parameters that have been set on the class instance.
Apply (console safe) Applies the effect on a RawBitmap image with parameters that have been set on the class instance, taking additionally the mapping channels as parameters.
ApplyInPlace (console safe) Applies the effect on a RawBitmap image with parameters that have been set on the class instance, and the RawBitmap passed in will also get the result image.
SetMaps (console safe) Sets the mapping parameters

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