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DCL:GRPH1:SCPACK: 3-D User Interface:Explanation of Subroutines: Tone Primitives

3.6.1 SCTNZU/SCTNZV

1.

Function

Fills in a triangular area in the U/V-coordinates. Specifies the tone pattern index at the same time.

2.

Call

CALL SCTNZU(UPX,UPY,UPZ,ITPAT1,ITPAT2)
CALL SCTNZV(VPX,VPY,VPZ,ITPAT1,ITPAT2)

3.

Explanation of Parameters

UPX, UPY, UPZ	(R)	An array with length 3. Gives the (X, Y, Z) coordinates of the points defining a triangle in UC.
VPX, VPY, VPZ	(R)	An array with length 3. Gives the (X, Y, Z) coordinates of the points defining a triangle in VC.
ITPAT1, ITPAT2	(I)	The pattern indices for the front and reverse side. See SCSTNP.

4.

Notes

(a)

The ITPATn specified here does not change the ITPATn inquired by SCTNU, SCTNV.