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sur_curves - geometric procedure
Description
| | Creates a bicubic surface. Input data is a set of curves. The curves will be approximated.
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Syntax
| | sur_curves(id, nu, nv, idcurves, twistmethod :attributes); |
| REF |
id |
| INT |
nu |
| INT |
nv |
| REF |
idcurves( ) |
| STRING |
twistmethod |
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Principal parameters
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| id |
- Local identity |
| nu |
- Number off U lines in the output surface. |
| nv |
- Number off input curves, which will become V lines. |
| idcurves( ) |
- Array with identities of curves |
| twistmethod |
- Method to calculate twist vector. Refer to SUR_SPLARR. |
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Attributes |
| PEN |
- Pen or colour number |
| LEVEL |
- Level number |
| BLANK |
- Visible (0) or invisible (1) |
| SFONT |
- Solid boundary and dashed midcurves (0) |
| SDASHL |
- Dashlength |
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Examples |
REF idcurves(10);
sur_curves(#10,6, 10, idcurves,"ZEROTWIST_1");
Creates a bicubic surface (type CUB_SUR).
The number of patches in the V direction will be nine since the number of curves is ten.
The number of patches in U direction will be five.
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