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DCL:GRPH1:SGPACK: User Interface:Explanation of Sburoutines: Tone Primitives

2.9.2 SGTNU/SGTNV/SGTNR

1.

Function

Fills in an area inside a closed polygon in the U/V/R- coordinates.

2.

Call

CALL SGTNU(N,UPX,UPY)
CALL SGTNV(N,VPX,VPY)
CALL SGTNR(N,RPX,RPY)

3.

Explanation of Parameters

N	(I)	The length of array UPX, UPY.
UPX, UPY	(R)	An array of length N. Give the (X, Y) coordinates of points defining a polygon in the UC.
VPX, VPY	(R)	An array of length N. Give the (X, Y) coordinates of points defining a polygon in the VC.
RPX, RPY	(R)	An array of length N. Give the (X, Y) coordinates of points defining a polygon in the RC.

4.

Notes

(a)

N must be larger than 3.

(b)

The tone pattern index for filling in the area is set with SGSTNP.