Class WritablePixelFormat<T extends Buffer>

public boolean isWritable()

Returns true iff this PixelFormat object can convert color information into a pixel representation.

public abstract void setArgb(T buf, int x, int y, int scanlineStride, int argb)

Stores the appropriate pixel data that represents the specified 32-bit integer representation of a color in the buffer at the specified coordinates. The 32-bit integer will contain the 4 color components in separate 8-bit fields in ARGB order from the most significant byte to the least significant byte. The buffer should be positioned to the start of the pixel data such that buf.get(0) would return the pixel information for the pixel at coordinates (0, 0). The scanlineStride parameter defines the distance from the pixel data at the start of one row to the pixel data at the start of the immediately following row at the next higher Y coordinate. Usually, scanlineStride is the same as the width of the image multiplied by the number of data elements per pixel (1 for the case of the integer and indexed formats, or 3 or 4 in the case of the byte formats), but some images may have further padding between rows for alignment or other purposes.

Color components can be composed into an integer using the following sample code:

     int argb = ((alpha << 24) |
                 (red   << 16) |
                 (green <<  8) |
                 (blue       );