Public Function New( _
ByVal flags As RasterMemoryFlags, _
ByVal width As Integer, _
ByVal height As Integer, _
ByVal bitsPerPixel As Integer, _
ByVal order As RasterByteOrder, _
ByVal viewPerspective As RasterViewPerspective, _
ByVal palette() As RasterColor, _
ByVal userData As IntPtr, _
ByVal userDataLength As Long _
- (nullable instancetype)initWithUserData:(nullable unsigned char *)data
palette:(nullable NSArray<LTRasterColor *> *)palette
A combination of the RasterMemoryFlags enumeration members indicating the type of memory to allocate for the image data.
Width of the image in pixels.
Height of the image in pixels.
The number of bits per pixel.
Valid values are 0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 16, 24, 32, 48, and 64.
Color order for 16-bit, 24-bit, 32-bit, 48-bit and 64-bit images.
If the resultant image is less than 16 bits per pixel, this will have no effect since palletized images have no order.
Specifies where the beginning of the image is stored.
Most file formats start in the lower left corner while some formats start in the upper left corner.
Support for 12 and 16-bit grayscale images is only available in the Document/Medical Imaging editions.
There is some speed penalty (loss) for accessing RasterMemoryFlags.Tiled images. Therefore, it is not recommended for use with all images.
The RasterMemoryFlags.Tiled images are not used by default. LEADTOOLS will create them only if it failed to create RasterMemoryFlags.Conventional images and RasterMemoryFlags.NoTiled was not specified.
The following lists the distinct types of bitmaps:
If you pass RasterMemoryFlags.User, you are responsible for freeing the image data.
Creating an image of type RasterMemoryFlags.User does not allocate memory for the image data. Instead, the data pointer userData is used. When you create a RasterImage with user data, the IsConventionalMemory and IsMirrored flags will both be set to true. Some image processing commands, such as RotateCommand, need to re-allocate the image data. If you create an image with RasterMemoryFlags.User, and pass it to these methods, the data will be re-allocated internally by LEADTOOLS and the image object will stop using the data in userData.
For more information, refer to Accounting for View Perspective.
For more information, refer to Grayscale Images.
For an example, refer to RasterImage.
Medical Web Viewer .NET
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