Name:         PGQHS

Purpose:      inquire hatching style

Category:     GRAPHICS

File:         pgplot.src

Author:       T.J. Pearson

Use:          see description below.

Description:

            SUBROUTINE PGQHS (ANGLE, SEPN, PHASE)
            REAL ANGLE, SEPN, PHASE
      
       Query the style to be used hatching (fill area with fill-style 3).
      
       Arguments:
        ANGLE  (output) : the angle the hatch lines make with the
                          horizontal, in degrees, increasing 
                          counterclockwise (this is an angle on the
                          view surface, not in world-coordinate space).
        SEPN   (output) : the spacing of the hatch lines. The unit spacing
                          is 1 percent of the smaller of the height or
                          width of the view surface.
        PHASE  (output) : a real number between 0 and 1; the hatch lines
                          are displaced by this fraction of SEPN from a
                          fixed reference.  Adjacent regions hatched with the
                          same PHASE have contiguous hatch lines.

Updates:      Oct 16, 1998: JPT automatically extracted from source.