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0030621: Implementation of building U-periodical surfaces.

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draw_test_harness.md - description of new options in Draw commands

AppDef_BSplineCompute.hxx, BRepApprox_TheComputeLineOfApprox.hxx, GeomInt_TheComputeLineOfWLApprox.hxx, Approx_BSplComputeLine.gxx - implementation of method SetPeriodic(...) and implementation periodic boundary conditions for multiline in order to get periodic multicurve.

GeomAPI_PointsToBSplineSurface.hxx, GeomAPI_PointsToBSplineSurface.cxx - adding new parameter for methods Init(...) and Interpolate(...), implementation of building periodic tangents for first and last AppDef_MultiPointConstraint of multiline for U direction of surface.

GeometryTest_APICommands.cxx - implementation of new functionality in Draw command surfapp and surfint

GeomFill_NSections.cxx
Fixing problem with bugs modalg_3 bug606_2
This commit is contained in:
ifv
2019-03-29 15:20:27 +03:00
committed by bugmaster
parent 293211aee0
commit d1775ee992
13 changed files with 974 additions and 503 deletions
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dox/user_guides/draw_test_harness/draw_test_harness.md
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@@ -1,4 +1,4 @@
Draw Test Harness {#occt_user_guides__test_harness}
Draw Test Harness {#occt_user_guides__test_harness}
===============================
@tableofcontents
@@ -5593,7 +5593,8 @@ Draw provides command to create curves and surfaces by approximation.
* **2dapprox** fits a curve through 2d points;
* **appro** fits a curve through 3d points;
* **surfapp** and **grilapp** fit a surface through 3d points;
* **surfapp** and **grilapp** fit a surface through 3d points by approximation;
* **surfint** fit a surface through 3d points by interpolation;
* **2dinterpolate** interpolates a curve.
@subsubsection occt_draw_6_8_1 appro, dapprox
@@ -5614,17 +5615,28 @@ Let us pick points and they will be fitted
2dapprox c 10
~~~~~
@subsubsection occt_draw_6_8_2 surfapp, grilapp
@subsubsection occt_draw_6_8_2 surfapp, grilapp, surfint
Syntax:
~~~~~
surfapp name nbupoints nbvpoints x y z ....
or
surfapp name nbupoints nbvpoints surf [periodic_flag = 0]
grilapp name nbupoints nbvpoints xo dx yo dy z11 z12 ...
surfint name surf nbupoints nbvpoints [periodic_flag = 0]
~~~~~
* **surfapp** fits a surface through an array of u and v points, nbupoints*nbvpoints.
* **grilapp** has the same function, but the x,y coordinates of the points are on a grid starting at x0,y0 with steps dx,dy.
* **surfapp** can take array of points from other input surface, if alternative syntax
**surfapp** name nbupoints nbvpoints surf [periodic_flag = 0]
is used.
Both command use for fitting approximation algorithm.
**surfint** uses interpolation algorithm and can take array of point only from other input surface.
Optional parameter **periodic_flag** allows to get correct periodical surfaces in U direction.
U direction of result surface corresponds colums of initial array of points.
If **periodic_flag** = 1, algorithm uses first row of array as last row and builds periodical surface.
**Example:**
~~~~~