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

3.5.3 SCSPMT

1.

Function

Sets the marker type for a polymarker drawn by SCPMU and SCPMV.

2.

Call

CALL SCSPMT(ITYPE)

3.

Explanation of Parameters

ITYPE

(I)

The marker type. (Initial value is 1.) When ITYPE is 1, '.'; when 2, '+'; when 3, '*'; and when 4, 'o'. Draws a character corresponding to the DCL character number (See Section 2.12 and Font Table in Sections  8.1.2, 8.1.3). For example, when ITYPE = 152, the symbol 'alpha' is drawn.

4.

Notes

(a)

ITYPE must have a value other than 0. When ITYPE is 0, a message is printed, and no further steps are taken.

(b)

The validity of ITYPE is not checked in this routine. It is checked when SCPMU or SCPMV is called.

(c)

The current marker type can be inquired with

CALL SCQPMT(ITYPE).