PictureEffects Xojo and Real Studio Plugin

ScaleEffect Class

A class to scale pictures.

This class has the following scaling algorithms:
  • BilinearScale
  • StretchHorizontal
  • StretchVertical


    This class supports use of multiple CPU cores on MacOS X, Windows and Linux systems.

    MPImageFilter
       ScaleEffect

    class ScaleEffect

    Properties

    IgnoreAlphaIf set to true then the alpha channel of the source image will not be included in the destination image.
    CPUCoreCount (Inherited) Returns number of detected CPU cores on the running machine.
    ErrorCode (Inherited) Returns error code after applying the effect. This value is a Constant defined in the PictureEffectsError module.
    MultiprocessingHint (Inherited) 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) 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

    BilinearScaleTo do high quality scaling on images use the BilinearScale function.
    StretchHorizontalTo stretch a picture horizontally.
    StretchVerticalTo stretch a picture vertically.

    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
  • Win32 - Windows
  • Linux x86

    Unsupported Platforms: