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DCL:GRPH1:Summary:3-D Normalization Transformations

1.5.2 Parameters for 3-D Normalization Transformation

The following parameters are necessary for normalization transformation of the 3-D U-coordinate to the 3-D V-coordinate. These can be set/inquired separately using the internal-variable-management routine SGpGET/SGpSET for GRPH1, but can also be set at once by using the utility for setting similar parameters available in SCPACK.

Viewport

(VXMIN3, VXMAX3, VYMIN3, VYMAX3, VZMIN3, VZMAX3)
A set of parameters necessary for transforming rectangular linear coordinate (ITR=1), and is set together with the window parameters. Unlike the viewport in 2-D, it has no connection to the clipping range.

These parameters can be changed/inquired with SCSVPT/SCQVPT.

Window

(UXMIN3, UXMAX3, UYMIN3, UYMAX3, UZMIN3, UZMAX3)
When ITR=1, the coordinate values corresponding to the viewport is specified with the values in UC.

These parameters can be changed/inquired with SCSWND/SCQWND.

Log Switch

(LXLOG3, LYLOG3, LZLOG3)
When ITR=1, set .TRUE. to make both axes presented in log.

These parameters can be changed/inquired with SCSLOG/SCQLOG.

Similar Transformation Parameters

(SIMFAC3, VXORG3, VYORG3, VZORG3)
A set of parameters for similar transformation (scaling/origin shift) specified in the case of cylindrical and spherical coordinates. The origin is set as (VXORG3, VYORG3, VZORG3).

These parameters can be changed/inquired with SCSORG/SCQORG.