GHL 3.4.7 patch 01 Release Note

This document describes about the contents of patch 01 for GHL 3.4.7.

• Revised spec
• Fixed bugs

Revised spec

Function: [3D] gh3convCbsSTri_Rev2(), gh3convCbsSTri2_Rev2()

The Rev2 functions tend to create too-many triangles for the trimmed surfaces that basis surfaces are rather thin. So, gh3convCbsSTri_Rev2() and gh3convCbsSTri2_Rev2() have been revised to call the original Rev1 functions gh3convCbsSTri() and gh3convCbsSTri2() internally for such surfaces instead of processing the surfaces themselves. This Rev1-calling is applied only if the basis surface is of Bspline.

Fixed bugs

Function: [3D] gh3ofstBscBss2(), gh3ofstRBscBss2(), gh3ofstBscBss3(), gh3ofstRBscBss3()

Twisted surfaces are returned for curves which have portion of straight line.

Function: [3D] Intersection functions for freeform surfaces

Incomplete intersections are returned for small and/or thin surfaces when the value of Gh__3intsSrfFfs_BzsOverlapTol is not small (including the default value).

Function: [3D] Shortest distance functions

Incorrect results are returned when GH__LMT_TOL is rather large.

Function: [3D] Shortest distance functions

If the given two geometry elements have nearly parallel portion with each other, the functions return inexact results.

Function: [3D] gh3intpCBsc(), gh3intpCBss(), gh3intpCBssC2()

These fuctions make the process down. (only in Version 3.4.7)

Function: [2D] Length functions for freeform curves gh2leng*()

Incorrect values are returned for the curves which have singular points.

Function: [3D] Length functions for freeform curves gh3leng*()

Incorrect values are returned for the curves which have singular points.

Function: [3D] gh3convCbsSTri_Rev2(), gh3convCbsSTri2_Rev2()

Incorrect results are returned for the trimmed surfaces which have two or more holes.

Function: [3D] Shortest distance functions between curves and surfaces

Incorrect results are returned.

Function: [2D] gh2idntOPrmOPrm()

Infinite recursive calls occur in the function.

Function: [3D] gh3idntOPrmOPrm()

Infinite recursive calls occur in the function.

Function: [3D] gh3convCbsSTri_Rev2(), gh3convCbsSTri2_Rev2()

Incorrect results are returned for the trimmed surfaces which have portion of large curvature.

Function: [2D] gh2inckPntCCmc()

Incorrect results are returned for a certain combination of points and closed composite curves.

Function: [3D] Intersection functions for freeform surfaces

Incorrect results are returned for small and thin surfaces.

Function: [3D] Intersection functions for quadric surfaces and freeform surfaces

Incorrect results are returned.

Function: [3D] gh3intsPlnCon()

bus error occurs at the point of reducing a circle to a point when 'r_paramA' or 'r_paramB' is NULL.

Function: [2D] gh2projPntEll()

Incorrect results are returned for the ellipses that x_radius and y_radius are largely different.

File: [3D] ghlv3/src/3d/elmcrtn/gh3hndlStri.c

Some internal functions are defined as external.

File: [--] ghlv3/src/util/gh_utilNtre.c

Some internal functions are defined as external.

GHL is being brought you by following people

Naotake KAKISHITA	naokak@pml.co.jp	
Toru HASEGAWA	hasegawa@sra.co.jp
Nobuyuki SHIKANO	shikano@pml.co.jp
Hideaki ITO	hideit@pml.co.jp

Thank you for your continued support!