NX二次开发源码分享：显示面的法相方向

admin

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# g5 |* `& J, V) ~  W经常能用的到，通过选择面，显示临时法线方向和点！
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[mw_shl_code=cpp,true]  static bool DisplayNormal(Face theFace)
    {
        double[] param = new double[2];
5 @. F  x4 b% E$ q9 r        double[] p1 = new double[3];
) a. P9 F+ a( {/ s- V        double[] u1 = new double[3];
        double[] v1 = new double[3];
        double[] u2 = new double[3];
        double[] v2 = new double[3];
) j3 Y* D4 e5 X1 m0 b        double[] unit_norm = new double[3];
        double[] radii = new double[2];
& g; g! W8 L( S        double[] uv_min_max = new double[4];

. w  O+ [$ {6 ]; F" |5 F/ z        theUFSession.Modl.AskFaceUvMinmax(theFace.Tag, uv_min_max);
1 Z+ I1 a% C1 |1 N3 v9 ~        param[0] = (uv_min_max[0]+uv_min_max[1]) / 2;
* Y+ I9 a6 K4 ^        param[1] = (uv_min_max[2]+uv_min_max[3]) / 2;
8 E. a! Q2 O6 G. L1 w4 s/ K        theUFSession.Modl.AskFaceProps(theFace.Tag, param, p1, u1, v1, u2, v2, unit_norm, radii);

- Y  x# H) {* {3 K8 D% H        DisplayTemporaryPoint(p1);
6 t- _# A, c+ p8 m        DisplayConehead(p1, unit_norm);
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  j6 r' M: B- B, Q0 X        return true;
; x7 u/ Y, `: Z  F1 X0 o    }
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) f# X! w. ^, b4 D; i) K0 Z- \    static void DisplayTemporaryPoint(Double[] loc)
% R8 ~: K4 I1 K6 {    {
        UFObj.DispProps color = new UFObj.DispProps();
        color.color = 6;
        theUFSession.Disp.DisplayTemporaryPoint(Tag.Null, UFDisp.ViewType.UseWorkView,
            loc, ref color, UFDisp.PolyMarker.FilledCircle);
    }

, K, a( z: q0 Q. g- c    static void DisplayConehead(Double[] loc, Double[] dir)
    {
        theUFSession.Disp.Conehead(UFConstants.UF_DISP_WORK_VIEW_ONLY, loc, dir, 0);
# h/ \. s$ z9 {- y6 X5 t( v    }
[/mw_shl_code]

admin

如果使用ufun的函数基本如下：
3 n3 e6 P8 ^9 z, X& I2 c1 ~1 X8 x//获取面的uv极值
. l. {( A$ x1 P4 c8 [int UF_MODL_ask_face_uv_minmax
(
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tag_t face_tag,
! A8 ]6 h$ S# @* C6 Ndouble uv_min_max [ 4 ]

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5 o. B! P: W* }5 Y1 g" T& F) Z6 c3 m1 y//获取位置点信息--double param [ 2 ] 的输入就是上一步的输出
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) N- I* Y6 s7 _6 W1 ]int UF_MODL_ask_face_props
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tag_t face_id,
3 V$ Z0 c% f3 Ddouble param [ 2 ] ,
double point [ 3 ] ,
double u1 [ 3 ] ,
double v1 [ 3 ] ,
2 o8 L) D1 k0 e/ i+ }double u2 [ 3 ] ,
( a+ i- V) f! y- Odouble v2 [ 3 ] ,
% _. n$ h+ _" Fdouble unit_norm [ 3 ] ,
1 d2 U  d9 Y  A$ ~+ ^double radii [ 2 ]

)
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//将点输入到显示临时的函数中
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int UF_DISP_display_temporary_point

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! U9 M, `6 ]8 ]3 h' z  @, Rtag_t view_tag,
UF_DISP_view_type_t which_views,
double markerpos [ 3 ] ,
6 p+ V( Z7 b- }: @2 u( ~# z4 HUF_OBJ_disp_props_t * color,
UF_DISP_poly_marker_t marker_type

)
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& l: s  x3 m- @+ S, Z//显示
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# Y! j& X7 |; D! `- C% Ivoid UF_DISP_conehead
(
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+ c2 F$ V' a$ ^/ Rint display_flag,
double coord [ 3 ] ,
double vector [ 3 ] ,
int anchor_flag

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