DCL:GRPH1:SGPACK: User Interface:Explanation of Subroutines: Tone Primitives
Fills in an area inside a closed polygon in the U/V/R- coordinates. Specifies the tone pattern index at the same time.
CALL SGTNZU(N,UPX,UPY,ITPAT)
CALL SGTNZV(N,VPX,VPY,ITPAT)
CALL SGTNZR(N,RPX,RPY,ITPAT)
N (I) The length of the array UPX, UPY. UPX, UPY (R) An array of length N. Gives the (X, Y) coordinates of the points defining a polygon in the UC. VPX, VPY (R) An array of length N. Gives the (X, Y) coordinates of the points defining a polygon in the VC. RPX, RPY (R) An array of length N. Gives the (X, Y) coordinates of the points defining a polygon in the RC. ITPAT (I) Tone pattern index. See SGSTNP.