PictureEffects Xojo Plugin

RotateEffect Class

A class to rotate pictures.

Both high quality Color weighted rotation rotation and simple rotation is supported.

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

MPImageFilter
   RotateEffect

class RotateEffect

Properties

IgnoreAlphaIf set to true then the alpha channel of the source image will not be included in the destination image.
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

ApplyApplies the effect on a given source image.
CalculateDestinationSizeCalculates size of the destination picture without doing the actual rotate.

Constants

ROTATION_NORMAL = 0Normal rotation is used, which is faster but produces less quality.
ROTATION_COLOR_WEIGHT = 1Color weighted rotation rotation is used, which is slower but produces better quality, especially on edges.
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