Line Style
A line stipple pattern.
Parameters
factor
specifies the number of times each bit in the pattern is repeated before the next bit is used. For example, if the factor is 3, each bit is repeated three times before using the next bit. The specified factor must be either zero or an integer greater than 0. A factor of 0 indicates no stippling.
pattern
specifies a number whose lower 16 bits define a pattern of which pixels in the image are white and which are transparent. Each bit corresponds to a pixel, and the pattern repeats after every n*16 pixels, where n is the factor. For example, if the factor is 3, each bit in the pattern is repeated three times before using the next bit.