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DCL:GRPH1:SCPACK: 3-D User Interface:Explanation of Subroutines: 3-D Normalization Transformation

3.3.1 SCSVPT/SCSWND/SCSLOG/SCSORG

1.

Function

Changes the parameters for 3-D normalization transformations.

2.

Call

CALL SCSVPT(VXMIN3,VXMAX3,VYMIN3,VYMAX3,VZMIN3,VZMAX3)
CALL SCSWND(UXMIN3,UXMAX3,UYMIN3,UYMAX3,UZMIN3,UZMAX3)
CALL SCSLOG(LXLOG3,LYLOG3,LZLOG3)
CALL SCSORG(SIMFAC,VXORG3,VYORG3,VZORG3)

3.

Explanation of Parameters

VXMIN3,VXMAX3,VYMIN3,	(R)	The viewport for a rectangular linear coordinate. See Section 1.5.
VYMAX3,VZMIN3,VZMAX3
UXMIN3,UXMAX3,UYMIN3,	(R)	The window for a rectangular linear coordinate. See Section 1.5.
UYMAX3,UZMIN3,UZMAX3
LXLOG3,LYLOG3,LZLOG3	(R)	Specifies the log axes for a rectangular linear coordinate. See Section 1.5.
SIMFAC	(R)	The scaling factor for a cylindrical or spherical coordinate. See Section 1.5.
VXORG3,VYORG3,VZORG3	(R)	The position of origin in a cylindrical or spherical coordinate. See Section 1.5.

4.

Notes

(a)

The current parameters can be inquired by

CALL SCQVPT(VXMIN3,VXMAX3,VYMIN3,VYMAX3,VZMIN3,VZMAX3)
CALL SCQWND(UXMIN3,UXMAX3,UYMIN3,UYMAX3,VZMIN3,VZMAX3)
CALL SCSLOG(LXLOG3,LYLOG3,LZLOG3)
CALL SCQORG(SIMFAC,VXORG3,VYORG3,VZORG3).

(b)

UXMIN3!=UXMAX3, UYMIN3!=UYMAX3, and UZMIN3!=UZMAX3, and in the case of logarithmic transformations, these parameters must have positive values.

(c)

These parameters become effective when SCSTRF is called.