User's Guide用户手册（自整理） 附后有TID应用模块（超连接TID) 初始设计主要模块（TID） Tribon M3 Form船型定义 Tribon M3 Lines线型（光顺） Tribon M3 Surface & Compartment曲面和分舱 Tribon M3 The Geometry Modeller各模块功能：
Tribon M3 contains four separate but integrated systems for geometry modelling: Tribon M3 Form（含船型定义和性能分析计算） · Powering Module (formerly POWER)阻力推进
· Manoeuvring Module (formerly RESPONSE)操纵稳定性 · Seakeeping Module (formerly MOTION)波浪 · Dynamic Positioning (formerly DPDAS)动水力
Tribon M3 Lines（含船型参数定义和线型光顺，生成曲面及静水力分析） Tribon M3 Surface（含曲面处理，生成生产设计要素） Tribon M3 Compartment（对船体进行分舱及计算） Lines线型（光顺） Major Tasks主要功能： Fairing the Design 3D Curve Fairing Curve Editing
Waterline Endings Decks
Hull Distortion
Generating a surface
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Hull Form Definitions
采用B样条数学方法对2维和3维曲线定义，处理。
Tribon Lines uses 2-D and 3D-sPACE曲面片和曲线编辑 curves to define a hullform, of which the mathematical basis is B- Splines.
The mathematical spline is a close analogue of the draughtsman's spline, a long narrow strip of wood or plastic shaped into the required curve form by lead weights called \"ducks\".
If the draughtsman's spline is considered as a long thin elastic beam, then Euler's equation yields:
where M(x) is the bending moment, E is Young's modulus, I is the moment of inertia and R(x) is the radius of curvature. For small deflections we can assume:
where y\" denotes the second derivative of the deflection y with respect to x. If the ducks are assumed as simple supports:
(a linear function)
where A and B are constant, therefore
Integrating the above equation twice shows that the physical spline can be described by cubic polynomials between supports:
where a, b, c and d are coefficients of the polynomial.
B-spline curves are splines in which the vertices of an open polygon together with an appropriate knot vector and the B-spline basis functions of the required order uniquely define the curve shape (see
Figure 1:2.: B-Spline Curve with Defining Polygon.). The prime user functions of the B-Spline polynomial used in the Tribon Lines system are:
1. Display of polygon vertices on the graphics screen and interactive modification of the local curve shape by redefining the polygon vertices.
2. Provision for creating a knuckle: i.e. a discontinuity in the first derivative of the curve. The B-spline definition for the entire curve span is unaffected by the introduction of a knuckle.
3. Provide a stable fit through uneven or irregularly sPACE曲面片和曲线编辑d data points.
4. The B-spline can be easily interrogated for properties of the curve such as coordinates of a point, or the slope and curvature at a point and the area enclosed by the spline.
B-spline Properties（B样条曲线特性） Convex Hull
The B-spline curve must be within the largest convex polygon obtainable from the defining polygon. As a consequence of the convex hull property, for a cubic B-spline if 4 consecutive polygon points are colinear then a straight line is obtained.
Variation Diminishing
The B-spline curve does not oscillate about any straight line more than its defining polygon.
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Numerical Stable/Computationally Efficient
Lines uses an algorithm for B-spline evaluation that is not only computational fast, but is also stable so that round off errors do not accumulate. The algorithm has the further advantages that it is compact and requires very little intermediate storage.
Figure 1:2. B-Spline Curve with Defining Polygon. 1.3.3 Principal Functions Provided功能概要 Importing Data输入数据
可以输入2维型值或导入数据文件。依次为首尾轮廓线，控制线（FOS边平，Knuckles折角，FOB底平，Plines 多义线），站线、肋骨表型值。然后构筑船壳外型对Waterlines水线和Buttocks纵剖线进行初步光顺检查。
Exporting Data输出数据
输出格式为HFD, BRITFAIR and IGES： Section Area curves to a specified Waterline对应水线横截面面积曲线。 Hydrostatics i.e. volume, LCB and form properties of a ship静水力
Transposed Sections i.e. new section positions after modification of the Section Area Curve.指定剖面积
Directories of sets of curves i.e. Buttocks, Waterlines etc. 水线纵剖线
Curve data i.e. coordinates and B-spline definitions of any curves任意曲线数据如坐标 Girths of any stored curves.任意曲线围长
Loftbook showing directories and user selected crossing points.光顺报告 附加有比例、定位等输出控制。
Setting Global Values设定坐标系原点
Viewing Hullforms and Curves观察船型和曲线（2维或3维模式） 观察窗口可以命名
Editing Curves and Points编辑曲线和点 Prefit（预设处理）可以设定曲线数据点。 (PACE曲面片和曲线编辑)—可以处理一批曲线。 Fairing光顺
通常的光顺方法：用最少的数据，例如轮廓线、一些控制线及初始站线。加上hullform（船型定义模块）的一些限制。及结构线construction lines (CLINES)（折角线、切线）或多义线Pline（由结构线投影的正交线、一定切角产生的三维线用于检查光顺情况）。
Creating Construction Lines创建结构线
结构线通常由曲面片和三维曲线定义和处理而来。其功能主要用来进行如梁拱和类似的混合曲线定义。 Analysing Curves分析曲线 即计算和输出数据。
Distorting Designs反向思维概念性错误检查设计方法
One minus Prismatic Coefficient (1 - Cp).使用负的菱形系数（1 – Cp） The Lackenby Method.缺陷方法
Or, Interactively by the user.交互方法
例如，如果最大站面不在船中，使用缺陷方法Lackenby method可以移动最大站面到船中（提示此方法仅在半条船状态中使用。
Creating Surface Patches创建曲面片
对选择的曲线（形成曲线网格）定义为曲面片，进行曲面片和曲线的交互式处理。 Decks甲板
甲板可以用已有的梁拱和舷弧产生，也可以用参数变量加以定义。如果Gunwhale（舷边和甲板的交点）必须先定义：其半径值及纵向范围应一起定义；并且为尾部变化段（Fade-in淡入）和首部变化段（Fade-out淡出）也要定义，定义统一的梁拱值或变化的梁拱值。
过渡部分可以由任意的肋框之间按统一或变化进行处理。
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Plotting出图
出图提供各种比例和模式供选择。 Loftbook光顺报告
可以输出全船或部分肋骨、站线或单根曲线的光顺数据报告，可以是80列或132列的格式或(CSV)限定格式。
2 Managing Lines Designs线型光顺管理
在初始设计模块管理中，线型数据按项目分类存储和管理。 2.1 Project setup and selection项目设置和选择
进行新的设计需创建一个项目，打开一个设计要进行选择项目的操作。 2.2 Opening an Existing Design打开一个已有的设计 FILE \\ OPEN 打开选取即自动调入工作所需。 2.3 Setting up a New Design设置一个新的设计 在当前的项目中 FILE \\ NEW创建一个新的设计，输入名称和说明。拾取后New button按钮，一个空的设计被建立，同时其具有由项目定义的缺省设计信息（主尺度要素，肋骨表，单位等）。
3 Major Tasks线型模块主要操作 屏幕分为7个主区：:
Pulldown menu bar下拉菜单
Tool bars (Floating Palettes)浮动工具条 Graphics windows图形窗
Curve/Hullform tree曲线/船型构造目录数 Status line状态条
Command and output window命令和输出窗 Points Buffer Window.数据点缓冲即时显示窗
数据点缓冲即时显示窗
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Figure 3:3. View Settings Dialog.
curves
icons from the View toolbar.
The commonly used orthogonal curves can be displayed from the View toolbar. The display sections
icon, display waterline
icon, display buttock
icon and display all
icon perform
the same function as the respective options on the View Settings dialog.
3.2.1 Creating a New Design创建新的设计 3.2.2 Importing Data Files输入数据文件
边界曲线、折角线等各种相关2维或3维数据数据文件均可导入。而初始的站线定义文件由Britfair file, Design file or HFD file.文件导入，参见技术参考部分。
Importing a Boundary Curve输入边界曲线
这是通常首先要做的，可以输入数据点也可以输入数据文件： 输入数据文件要设定X轴（坐标类型、距离） User Parameters icon
选取 Data Set 页中的Distance按钮以便输入站线距离和数目
Figure 3:6. User Parameters Dialog - Data Set page.
对于输入数据点产生边界曲线：则选取 拾取
Curve Points 页, 选取曲线类型如 Stern Profile后按 Import 输入（如有文件可选取相应的DAT文件）.
Figure 3:7. Create Curve Dialog.
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侧视, , 输入点, . 按点自动连线 .如下图
Figure 3:8. Buttock View, displaying the Stern Profile. 若接受则按此按钮,
, 不接受按此按钮,
Figure 3:9. Buttock View, displaying the fitted Stem Profile. FOB底平线 和 FOS边平线
图例使用PACE曲面片和曲线编辑模块进行处理：处理底平线 边平线拉直部分 Click picture to enlarge
Figure 3:10. Patch曲面片 and Curve Editor - FOB底平线 and FOS边平线.
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拉直按钮
.
Figure 3:11. FOS边平线 after straightening of middle section.
Figure 3:12. FOB底平线 after straightening of middle section. 接受并更新,
,可以退出PACE曲面片和曲线编辑.
Importing 3D Curves输入三维曲线
对于输入边界曲线，折角线，最大水线必须由用户给定一个8个字符以内的名称。如果用户继续给如一定角度的折角线或切线命名，则此名称为6个字符—原因是系统按类别对其进行管理。不同类别的曲线可以同名，因为其保存在不同的目录中。
Figure 3:13. Create Knuckle.
示例为文件名为（横向）transom.dat, 创建类型为Knuckle （折角线）的曲线。
Figure 3:14. Section View, displaying the fitted \"transom\" after editing the Points.
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如下示例为文件名为（最大水线）Topwl.dat , 创建类型为PLINE（多义线）的曲线。 注意：从尾中心开始排序的第2点设定为折角，而第3点为切点。
Figure 3:15. Waterline View, displaying the fitted \"topwl\" after editing the Points. Using Offset Data用型值表 图标按钮
通过以下数据文件格式(britfair, HFD, Sfolds, Dump)导入。
Figure 3:16. Use Design dialog
用户还要对其目录和类型是否正确进行检查 .
Figure 3:17. The Directory Dialog.
Fitting Section Data站面数据的配置
进行站面处理前通常要先处理边界线。
Figure 3:18. Fairing Dialog.
在插入正交线或对角线前要给定一个范围，其可以是一个或多个站面，水线或纵剖线-根据要插入的线而定。 选取
进入Fairing对话框，拾取Design i选 Station （站）按钮到（设计选项）-
Data Set （数据设置页）指定 X（X轴值）OK确定.在设计初始或此阶段都可插入。
Interpolating an Individual Section插入单独的站面
在Fairing对话框中选取Get进行插入一个独立的站面操作。可以是站线、水线、纵剖线。选取适当的曲线类型，站面值输入到Position box后, 确定Apply. 这样如果设计数据存在，输入点即当前曲线This will get the set of points for section 1 from the design data (if they exist) 8 / 40
which will now be the current curve.
站面显示按钮
，也可以在输入边界曲线Importing a Boundary Curve对话框中显示、预处理样条曲
线。对于曲线的光顺：采用曲线的反向曲度半径加以显示。可以用一系列簇的方式或连续线方式显示
.
Fitting a Range of Sections选取站的范围 在Fairing对话框中选取 Fit 进行站面操作，选取适当的曲线类型Section, 可选All然后Accept 到 Fit 对话框中 Apply.
3.3 Fairing the design光顺
.
曲线光顺的基本操作手法:
Removing and replacing points删除和更换点 Offsetting points偏移点 Moving points移动点 Inserting points插入点
Setting knuckle, tangent or ordinary points设定折角点或切点或一般点 Offsetting the vertices of the B-spline偏移B样条线的顶点 Inserting and removing knots插入和删除节点 Automatic fairing自动光顺
确定光顺结果接受。 3.3.1 Initial Fairing初步光顺 (PACE曲面片和曲线编辑),
. 或PACE曲面片和曲线编辑
3.3.2 Traditional Method通常的做法
Fit Waterlines or Buttocks or Both光顺水线或纵剖线或二者一起进行 Fitting Waterlines光顺水线 Fitting Buttocks光顺纵剖线 Review Sections检查站线 Add More Sections增加站面
Cycle between Curves对曲线进行圆弧处理 3.4 3D Curve Fairing三维曲线光顺
原则：用最少的数据、线即可以控制船型也可以光顺整船。而三维曲线定义是非常困难的。通常采用如下步骤：
3.4.1 Create Clines创建结构线
在已经有了纵剖、横剖等线后。要检查一下整个形状，通过交叉线检查其局部是否具有类似的形状，而这些曲线对同样的分类形状进行划分。通常在横剖面创建二维结构线来进行。We should now examine the design as a whole and identify ones on the surface where the orthogonal curves have similar shape and form and that could be classified as belonging to the same \"family\" of
curves. The appropriate view, normally section, should be selected and Clines (2D construction curves) should be created in these identified areas.
二维结构线
，Cline Curve type曲线类型为：平直Flat, 曲折Crank, or
曲线Curve 和折角线Knuckle结构线只能通过鼠标抛物线Parabolic 可以输坐标值或用鼠标指针交互创建。指针交互输入。
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Figure 3:19. 2D Construction Dialog.
如上示例 Curve 选取曲线类型后输入名称。鼠标指针Cursor 检查框和其他编辑框将变为灰色。在拾取创建Create 按钮后，鼠标指针将变为十字叉。状态条询问用户用鼠标指针在曲线上选点。右键结束.
提示：在舭部为保持其形状，至少要保证通过3-5个点。
Figure 3:20. Typical Fore Body Cline Arrangement；. Figure 3:21. Aft Body of Container Ship. 3.4.2 Creating 3D Curves创建三维曲线 Figure 3:22. 3D Construction Dialog. 三维结构线创建
对话框。缺省页面为插入Intersect 。默认状态为采用横剖Sections。通常三维结构线创建开始为多义线。可选Type select Pline.输入名称。可以输入限制如：到FOS边平线。然后确定Create
日后修改后，可以通过曲线目录树Curve Tree，选取重生成 Regenerate.
3.4.3 Fit Original Sections原始站面配置 原始剖面通常配置为仅对多义线进行检查。其对站线检查，而不对水线、纵剖及已接受的点检查。选取Fit 按钮将对选取的曲线进行光顺.
另外折角线knuckle/tangent切线必须先期进行光顺。用户也可以对定义的角度切出曲线按上述进行处置。 这样，原始的站面线可以由更新的三维曲线进行重新配置。
3.4.4 Fairing the Plines多义线光顺
因为三维线光顺困难，所以将其投影为二维多义线，作为二维结构线。系统自动投影为两个方向由用户同时进行光顺。
Selection of Projection Views投影线选择 用户决定，但以下操作作为经验供参考： 若想保持站线，选择向站线投影以便检查站线.
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如果想三维曲线X值增加，那么Y，值相应会增大或减少。要注意，该曲线光顺后可能不能正确连接。如果Y、值均增大或均减少。投影到水线和纵剖线进行观察。如果仅值增大或减少。可以投影到站线和水线或水线和纵剖线进行观察。如果仅Y值增大或减少。可以投影到站线和纵剖线或水线和纵剖线进行观察。 此方法是基于样条曲线及节点的操作，所以结构线的数据点并没有变化。
Projection of Plines多义线投影
Figure 3:23. 3D Construction Dialog - Project/Fair page.
选择投影 Project/Fair 光顺页对话框。确保曲线类型Curve Type为多义线 Pline ，选择投影方向。其保存为三维曲线。一旦选择即插入。也可以在曲线目录树中右键选取3D Fair按钮。再选择投影观察方向如Section, Waterline. S, W or B to the 3D curve name.
输入曲线名称进行投影。已有的曲线具有扩展名\"M\" 为合并的曲线。可选创建Create或保持Keep 。注意其名称的变化。
Fairing the Clines结构线光顺 Figure 3:24. Edit Dialog - Curve page.
三种方法：调整顶点；增加或减少节点；自动光顺。
Merging the Clines结构线合并 在修改了一根或两根投影线后，系统将合并两根结构线产生三维曲线以替换原来的多义线。技巧提示：可以创建一个新的曲线（在老的名称后加M作为新的合并后的曲线）以避免替换原来得曲线。
合并结构线显示光顺的主线，用户可以查看从线。 而后可以用DATA CURVE命令显示曲线的参数。 3.4.5 Refit Original Sections修整原始站面 可以反复光顺。
3.4.6 Create Angle Curves创建一定角度的曲线
After fairing the localised Plines, by projecting and merging, then refitting the sections, it may be necessary to introduce angle curves to give more control. The user can convert selected Plines to Tangent curves, using the accept dialog, then create angle curves for the section to 3D curve intersection angles. These angle curves can then be faired and the section re-fitted.
一定角度的曲线通常与折角线和切线有关。在二维结构线对话框中 2D Construction dialog 选取 Angle （一定角度的曲线），选取曲线类型为切线Tangent or Knuckle或折角线，在列表中选定。然后在观察控制板中选择正交曲线方式(Section, Waterline, Buttock)站线，水线，纵剖线，按角度进行计算，选Automatic自动以Create产生曲线。
该曲线为二维曲线：其曲线位置和角度配置和光顺按惯例处理。保存在结构线目录中，其名称依附于所属曲面曲线和排列。.
对其更多的控制用“预制和控制操作”PREFIT /CENTRIPTAL option, 当然有些已有的控制曲线如折角线和切线不是由结构线创建。不在此列。 若对已有的边界线创建“一定角度的曲线”例如对FOB底平线, FOS边平线。可以采用复制切线或折角线。在曲线目录树Curve Tree,右键然后选取Copy ，对话框Copy Curve 显示 (see Figure 3:25.: Copy Curve Dialog.) 选11 / 40
取到切线，选取名称。
Figure 3:25. Copy Curve Dialog.
提示：在首尾部可以临界区通过PACE曲面片和曲线编辑设定精度如每0.1 metres 或 0.05 metres 拉平以便控制光顺。
3.4.7 Refit Orthogonal Curves重新配置正交曲线
使用辅助的“一定角度曲线”来设置折角线和切线，可以关闭当前的正交曲线：选取
以显示可选曲线对话框，从下拉列表
中选择正交曲线或用范围Range 选择一批“一定角度曲线”。按Off 关闭 Figure 3:26. Select Curves Dialog. Cycle循环
可以反复操作，直到满意。
3.5 Curve Editing using the Patch and Curve Editor (PACE曲面片和曲线编辑)
3.5.1 Opening PACE曲面片和曲线编辑 PACE曲面片和曲线编辑模块的操作：
从曲线目录树中选取要处理的曲线，右键后选PACE操作 直接从编辑菜单中选取按PACE 形窗口中曲线（可多选）后，右键开始。 直接从标准工具条中选取按PACE
, 用鼠标点选图 , 给出结束当前活动曲线编辑。 PACE曲面片和曲线编辑的好处在于，对局部的个别曲线、面操作。 3.5.2 Control of the Display显示的控制
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Click picture to enlarge
Figure 3:27. The Patch曲面片 and Curve Editor. 按通常可以对显示窗进行各种显示操作。
Figure 3:28. The rubber-band oom box. ,
. .
.
.
.
.
,
,
.
Figure 3:29. Notional rotation axes.
, Other Display Controls其他的显示操作
Displaying and hiding curve entities显示和隐藏曲线实体
Curve precision曲线的精度 Curvature display曲率的显示 Curve active regions活动曲线区 Gridline display栅格显示
Displaying Curves, Vertices and Data points显示曲线，顶点，数据点
曲线列表Curves默认可视Visible ，另可选控制点、数据点、曲率、颜色可操作。
Figure 3:30. Curves grid of the Data Bar. Table 3: 1. Column functions.
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Figure 3:31. Data Points column popup menu.
Figure 3:32. Controlling the display of individual curves using the tree Figure 3:33. Controlling the display of a group of curves using the tree Curve Precision曲线精度
Figure 3:34. Set Curve Precision Dialog.
Figure 3:35. Curve displayed at low resolution. Figure 3:36. Curve displayed at high resolution Curvature Display曲率显示 VDU.
Figure 3:37. poor curvature distribution. 不好的光顺 Figure 3:38. good curvature distribution.好的光顺
Figure 3:39. terrible curvature distribution.糟糕的光顺（近乎直线，应去除些点）
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. 控制曲度显示的大小比例
Figure 3:40. Excessive scale used for curvature tufts.
Figure 3:41. Sensible scale used for curvature tufts.
Curve Active Regions and Split
Points活动曲线区和分离的点
Gridline Display栅格线显示
Figure 3:42. Gridlines display
Figure 3:43. Cursor position displayed in the Status Bar.
, (or by selecting DISPLAY \\ SHOW GRID).
3.5.3 Curve Manipulation曲线处理 曲线形状的改变通过以下方法:
Editing via data points通过数据点编辑 Editing via vertices通过顶点编辑
为避免混乱，技巧提示：注意固定曲线fitted curves和非固定曲线non-fitted curves的处理: Manipulate fitted curves via data points only固定曲线通过数据点编辑
Manipulate non-fitted curves via control points only非固定曲线通过顶点编辑
Figure 3:44. Correspondence between curve and data points set in the Curves Grid
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Figure 3:45. Curves modified by data points (left) and control points (right)
更新或接受
.但没保存。
Snap to Grid捕捉到栅格
.
Figure 3:46. Snap to grid control dialog
Locked Axes缩定轴向（保持一个轴方向不变）
Data Points and Control Points 这样相应数据值为灰色。不可变。 Editing Fitted Curves编辑固定曲线
所谓固定曲线即曲线通过数据点。.他们可能存在如下问题： Stochastic errors (noise) in the original data随机错误
Systematic errors in the original data (e.g. from a measuring process)系统或测量错误
Inability of the B-Spline representation to recreate the original curve geometry样条曲线无法重建几何曲线。
Unfairness of the original curve原始曲线不光顺。
Figure 3:47. The different data point types.
如上图，可以通过对点的适当控制处理。下表为数据点属性表 Data Points:
Figure 3:48. Data Points grid of the Data Bar.
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Selecting and Dragging选择和拖动
Figure 3:49. Dragging a single point.
单点处理或按 Figure 3:50. A selection of multiple data points. Nudging with Arrow Keys箭头键盘操作偏移量设置 Figure 3:51. Set Arrow Key Nudge Sie dialog. Copying and Pasting Data Points数据点的复制和粘贴 Combined Editing Approach点编辑的三种方法： 拖拉到栅格； 用键盘箭头移动点精光顺； 通过复制和粘贴 通过图形窗和数据窗交互检查和操作是有效的工作方法。 最好选用一组曲线同时进行可视操作，因为单个光顺是不行的。 Figure 3:52. A group of curves and their curvature tufts. 17 / 40 太多数目曲线会引起显示混乱。 Removing Data Points删除数据点 Figure 3:53. Curve points prior and after thinning. Graphically select one or more data points and press Select one or more rows in the Data Points grid. 通过数据表删除。 Figure 3:54. Using the popup menu to remove data points. 记住曲线数据点不得少于2个 接 点。 Controlling Tangency控制相切 Figure 3:55. Using tangent controls to reduce the number of data points. 通过数据点窗口 Data Points 控制 Figure 3:56. The Point Type column's drop down list. 相应的，在图形上选取数据点，按Tab键则循环7种操作: 18 / 40 Figure 3:57. Cyclic sequence for the seven different data point types. 注意曲线的端点必须为原始或相切类型Ordinary or Tangent 相切还可以在数据点表Data Points中加参数进行描述。如下图的角度和方向。pre pre , pre and Figure 3:58. Tangent angle definition. Adding data points增加数据点 When too many data points have been permanently deleted数据点太少，要增加 A straight region needs to be made curved直线变曲线，要增加 方法一：图选曲线. 方法二：在数据点框中. . Figure 3:59. Inserting a data point into the closest region of the curve, having initially selected the curve itself Figure 3:60. Inserting a sequence of data points, having initially selected an existing data point Data Points . 数据点框 19 / 40 Figure 3:61. Using the pop-up menu to insert a data point. Sorting data points排序数据点 Data Points (X, Y or ) 沿各轴向 升序Ascending or 降序Descending. Figure 3:62. Sorting points Creating Straight Line Segments创建直线段 数学描述： Both data points are tangents (type Tangent) and their tangency controls are collinear. 两个同线段点相切。 Both data points are knuckles, and one or both either have no tangency controls on the side of the straight segment, or the tangency controls are collinear with the straight line through the two data points. 两个同线段点相折 If one data point is an end point of type Ordinary, and the other point corresponds to one of the above criteria, or is of type Tangent(auto). 一个同线段普通点和一个自动相切点 Figure 3:63. Straight segments at the beginnings and ends of curves Figure 3:64. Straight segments within curves 20 / 40 Select a data point marking one end of the segment to be straightened. Hold Creating Circular Arc Segments创建弧线段 . 在正交平面中进行。 6步: Select the curve, or one of its data points, using the left mouse button in the appropriate orthogonal graphics view.选曲线或数据点。 Activate the arc tool激活弧线工具 Set the arc tool to be a Tangent or a Knuckle type设置弧线工具为相切或折线类型 Approximately sie and position the arc tool设置弧线工具中规格和位置。 Snap the arc tool precisely into place on the curve (this can be set to occur automatically when the tool come close enough to a satisfactory position) 设置弧线工具中扑捉精度。 Apply the arc tool to modify the curve应用修改 Figure 3:65. Creating an arc with knuckle transitions: move to position, snap to curve, apply to curve With the Tangent setting (TANGENT TYPE on the arc tool popup menu), the arc joins smoothly with the rest of the curve. Figure 3:66. Creating an arc with smooth transitions: move to position, snap to curve, apply to curve 关于弧线工具中规格 The centre point中心点 Three points on the circumference三点定弧 21 / 40 Figure 3:67. The dialog for cotrolling the arc tool When using the Knuckle setting, 折线类型时必须有两个点. When using the Tangent setting, 相切类型时必须有两个点.. Editing with Guide Curves编辑引导线 Figure 3:68. Using a guide curve: the selected data points will be moved horiontally so that in this view they will appear to lie on the guide curve on the right 水平观察 (Horiontal button) 垂向观察(Vertical button) （引导线）就近观察(Nearest button) Editing Non-Fitted Curves编辑非固定曲线 Using Data Points使用数据点 Manipulation through points on the curve A high degree of individual point accuracy is guaranteed High level controls for tangency conditions etc. High sensitivity to small perturbations of individual data points, leading to unfairness Using Control Points使用控制点 Manipulation through points not on the curve Accuracy of individual points less easy to achieve Control of tangents through a more manual process Curve less sensitive to small perturbations or noise in control points Table 3: 2. The differences between the use of data points and control points. Control Points 操作：拖拉或用控制点表 22 / 40 Figure 3:69. Dragging a single control point. Figure 3:70. Using a rubberband box to select multiple control points Truncating Non-Fitted Curves截断非固定曲线 Figure 3:71. Truncating a non-fitted curve by deleting data points 3.5.4 Curve Creation创建曲线 Creating Planar Curves创建平面曲线 Planar 平面操作页 23 / 40 Figure 3:72. Dialog page for creating planar curves X- Plane, Y-Plane and -Plane Freehand – 自由绘制 OK, Interpolation – 添加模式，通过数据表 Figure 3:73. Options when creating a planar curve (Re)create by interpolation 添加创建（重建）. Activate and use 激活应用（已存在曲线）. Copy from existing 复制（已存在曲线）. If Cancel is clicked, the curve creation is aborted. Creating Non-Planar Curves From Selected Points按选择点创建非平面曲线 Figure 3:74. Dialog page for creating non-planar curves that interpolate selected points 须选择两点或多点: Data points from one or more existing curves.数据点在1条或多条曲线上。 Intersection points between curves (shown by selecting or DISPLAY \\ PATCH曲面片 \\ NETWORK) 24 / 40 can be used.插入点在曲线之间 Figure 3:75. Options when creating a non-planar curve passing through selected points Creating Non-Planar Curves by Projection通过投影创建非平面曲线 Figure 3:76. Dialog page for creating non-planar curves by projecting Clines onto existing curves There are two possible sources for the Cline that is to be projected有两种结构线可以投影: An existing Cline, selected from the drop-down box.已存在 A new Cline created from a sequence of selected points.新建且数据点已排序。 Keep Cline.保持原结构线操作（则新的结构线具有同名） Figure 3:77. Options when creating a non-planar curve by projecting a Cline The options are as follows: (Re)create by projection causes the curve's data points to be created by projecting a Cline onto the other curves. This is usually what is intended. Activate and use is an option when a curve with the same name already exists, but is inactive. If this option is chosen, this curve is simply activated (no geometry changes occur). If Cancel is clicked, the curve creation is aborted. 3.5.5 Executing Macros宏执行 PACE曲面片和曲线编辑. or pressing 3.5.6 Colours颜色 General Colours通常 Cut curves Data points Vertices Background Gridlines Base plane (oblique view) 25 / 40 Control Polygon Surface Colours of Curves曲线的颜色 Figure 3:78. Pop-up menu for the Colour column of the Curves grid. 3.6 Waterline Endings and Frame Feet水线端点和肋骨根部 步骤： 1. Create a half siding curve 创建半边曲线 2. Fit Waterlines to the half siding 配置水线为半边 3. Generate the radii curve from the half siding and fitted waterlines由半边水线产生圆弧曲线并固定水线 4. Create an eccentricity curve (optional) 创建偏心曲线（可选项） 5. Create the end surface 创建端部曲面 6. Create the transition curve (optional, but recommended) 创建曲线转换 7. Update waterlines 更新水线 如果半圆弧值已知，可以手动输入按4-7步。 水线更新后，每个水线被转换的曲线截断。曲面的端部在水线的高度处分割，而且新的曲线片也在被割断的水线和端部之间分开。这样曲线片便于光顺处理。每个水线与端部曲面相切。一旦端部曲面确立，新的站线和水线都将配置为过此水线切点。 Figure 3:79. Waterline Endings Construction. 如果水线是光顺的而仅仅对端部进行分开处理，也可以省掉“转换曲线”。如果相切线存在，水线端点也即切点。如果相切线不存在，会补上一端水线相连。 3.6.1 Creating a Half Siding Curve创建半边曲线 HS/Radius（半边/半径）页 3.6.2 Fitting Waterlines to the Half Siding配置水线为半边 End Type 曲线端部对话框-端部形式Half Siding 26 / 40 Figure 3:80. Curve Endings Dialog - End Type page. 3.6.3 Creating the Radii Curve from the Half Siding从半边创建圆弧曲线 HS/Radius （半边/半径）页 , 选端部首或尾 (Stern or Stem). 选半径 Radius and From Half Siding 和来自半边曲线项，然后创建 Create. 3.6.4 Creating the Eccentricity Curve创建偏心曲线 Figure 3:81. Eccentricity Curve Definition. End Surface曲面端部对话框选 Eccentricity Curve. Normal 通常操作， 创建Create. 选项 . . 接受 3.6.5 Creating the End Surface创建端部曲面 End Surface曲面端部对话框选，创建Create. . 3.6.6 Create the Transition Curve创建转换曲线 End Surface曲面端部对话框选，选Transition Curve . 3.6.7 Updating Waterlines水线更新 曲线端部对话框选更新 Update ，选定更新或 All全部。 接受则按 Accept 更新操作仅在端部曲面中应用，参见端部形式页End Type . 3.6.8 Modifying the Tangent Curve修改切线 提示：用户不能使用“曲线编辑对话框中的选项”进行光顺（移动顶点，自动光顺等）。因为当曲线接受时，曲线点将会重新固定。 提示：当更新或重新固定水线时，已有的相切曲线将27 / 40 起作用。如果用户要求系统在水线端部产生切点，相切曲线在水线更新前将被删除。 3.6.9 Fitting New Waterlines and Sections配置新的水线和站线 End Surface option for Stem and /or Stern on the End Type page of the Curve Endings dialog. 3.6.10 User Defined Radii Curve定义圆弧曲线 HS/Radius （半边/半径）页，选 首 (Stem or Stern) 或尾及半径 Radius 。若为文件也可选文件。然后创建Create. 可以手工输入 Manual . Radii at known waterline heights are entered into the grid. 3.6.11 Waterlines with No Endings水线没有端部 Figure 3:82. An Example End Surface. Figure 3:83. The HS/Radius page, Displaying the Radii Points Used to Generate the Radius Curve in Figure 3:84.: The Radius Curve.. Figure 3:84. The Radius Curve. 注意：示例中曲面部在11.528以上产生端圆端部而在9.908以下为椭圆端。 Figure 3:85. The Eccentricity Curve. 3.7 Decks甲板 甲板生成前提：舷弧和梁拱线已建立。（如果此甲板具有“Gunwhale”舷顶和甲板相交部分，则也要先定义） 3.7.1 Creating Camber and Sheer Lines创建梁拱和舷弧线 Camber/Sheer. Figure 3:86. 2D Construction Dialog - Camber/Sheer page. 3.7.2 Creating Gunwhales创建舷顶（与甲板相交部分） Gunwhale . Figure 3:87. Deck Generation Dialog - Gunwhale page. 其半径设置对话框Radius panel. X轴向尾 Aft-X and Fwd-X 和X轴向首, 淡入Fade In and Fade Out和淡出,. 28 / 40 另有半径为固定值Constant or Varying或变化值, 开关On/Off 和确定OK 各操作项。 Figure 3:88. Gunwhale Showing Fade in, Fade Out and Parallel Regions. 3.7.3 Creating a Deck创建甲板 选取梁拱 Camber and Sheer 和舷弧线。每块甲板必须命名。可选全部All / Range或范围. 如果gunwhale舷顶已经定义，将会增加点已确保正确的半径。 Figure 3:89. Deck Generation Dialog - Deck page. 可以通过选择曲线对话框在以后对甲板肋骨进行开关on/off or deleted 或删除操作. 3.8 Hull Distortion船壳变形 可以对线型进行变形或比例转换。横截面面积曲线(SAC)生成随后并通过几种方式修改： 1-cp：容许方形系数CB修改 Lackenby methods.：容许方形系数CB, LCB, Parallel Midbody Forward平行中体都修改。 (PBF)首平行中体 or (PBA) 尾平行中体当横截面面积曲线(SAC)修改时亦修改。 3.8.1 Creating the SAC创建横截面曲线 , Figure 3:90. Distortion dialog - SAC page. 设定的吃水在 Get Current 操作，用户确定参数（包括纵倾）Particulars 。用范围 Fit Range orFit Series或系列选择生成SACs. （其命名前缀最大为3个字符）。计算按钮Calc ，观察按钮 View but，显示按钮Display. 3.8.2 Calculating the Hydrostatics静水力计算 静水力操作控制板Hydrostatics panel中选Hydro 。可以通过尾Aft and Fore 和首的操作选项设定范围。 涉及横截面面积曲线（SAC），其可以修改。并提供检查工具。变形Distortion功能选取不同的方法： (1-cp 29 / 40 or Lackenby)。输入参数。进一步操作在曲线变换操作板 Curve Transposition panel. 选不同的曲线类型和数量All 。接受 Accept 将保存和覆盖原来的曲线。当选择Pre-connect（预连接）： 其确保在输出后曲面片网格保持连接，这样曲面可以重建。当打开PACE曲面片和曲线编辑时，可选重建 Rebuild 3.8.3 Scaling比例 对设计的主尺度进行线性比例操作。Scale Figure 3:91. Distortion dialog - Scale page. 3.8.4 Extension of the Parallel Midbody平行中体范围 . Figure 3:92. Distortion dialog - PMB Page 3.9 Generating a Surface产生曲面 当已光顺到可接受的水平。通过曲面片和曲线编辑模块来处理曲面。当然曲面也可供其他模块使用： Surface/Compartment, Basic Design and Hull. 也可输出为IGES 128 (B-spline surface) and VRML forms. 两种方法生成曲面： -使用模块(PACE曲面片和曲线编辑)半自动生成 -分片手工生成和处理。 TID Utilities初始设计应用工具 1 BMT2DXF 1.1 Introduction BMT2DXF is a program designed to provide an interface between data files produced using Tribon Solutions software and drafting systems which use the Drawing Interchange File (DXF) format (e.g. Autocad). The types of Tribon Solutions file which can be translated into DXF using BMT2DXF are: General Plot Files ESSI data files BRITFAIR Files 1.2 BMT2DXF When run, BMT2DXF will ask the user for the required output units, with the choice being one of metres, millimetres, feet or inches. The user will then be offered a menu to select from. If an option, other than 'EXIT', is selected the operation associated with that option will be performed upon exiting the selection option, the user will be returned to the main menu. 1.2.1 General Plot to DXF When 'GPF to DXF' is selected from the main menu the user will be prompted for the name of a general plot file and the required general plot file will be output. A separate DXF file will be written for each plot found within the plot file, the DXF files will take the name of the plot file and a number (e.g. PLOT1.DXF PLOT2.DXF for the file PLOT.GPT). Each different colour within the plot file will be represented in the DXF file, though colours may vary from system to system as the colours within the plot file consist only of pen numbers and numbering systems may not be consistent. 1.2.2 ESSI to DXF When the 'ESSI to DXF' option is selected, the user will be prompted for the name of an ESSI file and 30 / 40 the required ESSI file will be written to DXF format. The DXF file will contain three layers associated names and colours to represent cutting lines, powder markings and rapid travel. The layers are: Line Type layer Name Associated Colour Cutting Outer Yellow Powder Powder Cyan Rapid Travel Rapid Red Table 1: 1. Layer Summary 1.2.3 Britfair to DXF When the 'BRITFAIR to DXF' option is selected from the main menu, the user will be prompted for the name of the DXF file. The user will then be prompted for the BRITFAIR file, this BRITFAIR file will then be written to DXF format. 1.2.4 DXF to Britfair When the `DXF to BRITFAIR' option is selected the user will be prompted for the name of the DXF file. The user will then be prompted for the DXF file. The user will then be prompted for the Britfair file. the user will then be asked if the DXF file was generated by Autocad. Six output files will then be produced. These files contain section, buttock and waterline information together with stem, stern and 3D curve details. 1.3 File Extensions In BMT2DXF, it is important that input files have the correct file extensions. The correct file extensions are: System to be Input File Extensions General Plot File no restriction ESSI no restriction Britfair correct extension Table 1: 2. File Extensions. 1.4 BMT2DXF Sample Run 1 General Plot File(GPF) to DXF 2 ESSI file to DXF 3 BRITFAIR file to DXF 4 DXF to BRITFAIR 5 EXIT Select Code > 1 Enter name of GPF file (Max 6 chars) > BONJ File BONJ1.DXF created File BONJ2.DXF created 1 General Plot File(GPF) to DXF 2 ESSI file to DXF 3 BRITFAIR file to DXF 4 DXF to BRITFAIR 5 EXIT Select Code > 2 Enter name of ESSI file > NCTAPE Enter bit size (mm) > 1 File NCTAPE.DXF created 1 General Plot File(GPF) to DXF 2 ESSI file to DXF 31 / 40 3 BRITFAIR file to DXF 4 DXF to BRITFAIR 5 EXIT Select Code > 3 Enter name of BRITFAIR file > BRIT.; Enter name of DXF file > TEST File TEST.DXF created Select Code > 5 FORTRAN STOP 1.5 Error Messages During the normal execution of the program, the only error messages which will appear relate to the invalidity of a specified input file. 2 Keyboard User Interface 2.1 The Keyboard User Interface The User Interface provides the means of communicating with an application. Most Initial Design applications use the standard command driven interface described by this document. While the commands and syntax vary from one system to another the structure and operation of the interface remain the same. Commands are normally entered via the keyboard, an on-screen menu or a tablet based menu. The user may have the ability to use all three methods but this depends on the application and the hardware on which it is implemented. This document describes the syntax and facilities available in the Keyboard User Interface. 2.2 Rules for Entering Commands The general format of a command is: Command < Parameter > < Qualifier(s) > where Command any valid application command. Parameter any valid parameter to the command. Parameters typically refer to an element type e.g. Curve, Patch, Point etc. Qualifier any valid qualifier to the command. Qualifiers typically apply some restriction to the parameter or some variation in the way the command executes. Commands and their parameters are always translated to UPPERCASE so the user is free to choose whichever he prefers. 2.2.1 Command Notation Within the descriptions of commands the following shorthand notation is used: ( ) Parameters enclosed within ( ) indicate a group of mandatory alternatives from which one must be taken. < > Parameters enclosed within < > indicate a group of optional alternatives from which one must be taken. ! The exclamation mark character ! is used to delimit a group of alternatives and should be read as OR. $W Indicates that an alphanumeric( A-Z,0-9 ) identifier must be supplied. The first character must be a letter of the alphabet. If an identifier is to contain lowercase or special characters e.g. SPACE, it must be entered within double quotes e.g. \"My Name\". e.g. ABCD or \"abcd\" or \"This Id\". $L To indicate that 1 or more alphanumeric identifiers must be supplied. Each identifier must be separated by a valid delimiter i.e. SPACE or COMMA. e.g. A1 A2 A3. $F Indicates that a valid file name must be supplied. The format of the file specification must conform to the allowable specification for the machine on which the application is implemented. e.g. MYFILE.DAT. 32 / 40 $N Indicates that a number must be supplied. e.g. 1.5. $S Indicates that 1 or more numbers must be supplied. e.g. 1 2 3.5 4. 2.2.2 Truncating Command Names and Parameters All command names may be truncated to the least number of characters that would make the command unambiguous. Parameters and Qualifiers may be truncated to the least number of characters that would make them unambiguous to the command in which they are used. 2.2.3 Separators Each parameter in a command line must be properly delimited. There must be at least one separator between each item. Valid separators are a SPACE ' ' or a COMMA ','. e.g. COMMAND PARAM 1 COMMAND,PARAM,1 However, if the parameter begins with a FORWARD SLASH '/' then it need not be preceded by a separator. e.g. COMMAND PARAM/QUAL Similarly, if a parameter end with an EQUAL SIGN '=' then the subsequent delimiter can be omitted. e.g. COMMAND PARAM=2 2.2.4 Continuing Commands on more than One Line A command line may be entered on more than one line by using the continuation character, a HYPHEN '-', as the last character on the line. e.g. BLINES > FIT BUTTOCK 1 THRU 10 INCREMENT 1.0- Continuation > /CLOSE Each line of input must be no more than 80 characters and the total length of the command line must not exceed 512 characters. The hyphen is treated as a separator therefore keywords cannot be split over two lines. 2.2.5 Multiple Commands on One Line More that one command with associated parameters and qualifiers may appear on a single line by separating each command by a COLON ':'. e.g. CLEAR : DISPLAY POINTS : DISPLAY CURVE 2.2.6 Parameter Prompting If a command is not entered in full the interface will prompt the user with a list of valid alternatives for the next parameter of that command. In this way a command can be built up parameter by parameter, this is especially useful for new users or long and infrequently used commands. e.g. Syntax: COMMAND ( PARAM1 ! PARAM2 ! PARAM3 ) < /QUAL1 ! /QUAL2 > $N User Input: command Response: PARAM1 PARAM2 PARAM3 COMMAND \"Option\" : param2 Response: $N /QUAL1 /QUAL2 COMMAND PARAM2 \"Option\" : /qua1 Response: :COMMAND PARAM2 /QUAL2 \"Number\" : 22 At this point control would pass to the application and the full command COMMAND PARAM2 /QUAL2 22 would be processed and appropriate action taken. Commands requiring any of the keywords described in Section 1.1 issue the following prompts: Keyword Prompt 33 / 40 $W Identifier $L Identifier List $F File name $N Number $S Number Series. 2.3 Reserved Interface Commands The interface has its own set of reserved commands which are completely independent of the application. All reserved commands are preceded by the DOLLAR '$' character. The full list of reserved words is shown below and described in the following sections. General Facilities $DEFINE Define a symbol. $ECHO Echo input data. Application dependent. $EVALUATE Evaluate a mathematical expression. Can be used as simple calculator. $HELP List command syntax. $LOG Turn on session log. $NOLOG Turn off session log. $PROMPT Change prompt. $SHOW Show symbols/variables. Macro Facilities $DELETE Delete variable. $DEFAULT Set default value for variable. $DIRECTORY List available macros. $DO Looping. $EXIT Exit current macro. $FREE Unload macro. $GOTO Goto label. $IF If condition. $INQUIRE Inquire value from user. $LOAD Load macro in library. $MAC Execute macro. Can also use @macro-name. $PRINT Print messages and variables. $SET Set variable. $TRACE Set Macro trace level. $VARIABLE Define variable. $WAIT Pause. 2.4 Application Return Codes Some applications can return values as the result of executing a command. These values are assigned to default variables named as follows: RET_CNT = No. of values returned. RET_1 = 1st. value returned. . . . RET_N = Nth. value returned. These variables can be treated like any other but the user should be aware that the next application command may change these variables therefore any required results must be assigned to user defined variables. 34 / 40 e.g. $VARIABLE num intx inty intz ; ; Execute application command INTERSECT SECTION 5 WITH FOS ; Check return code $IF RET_CNT = 0 THEN $GOTO %NO-INT ; ; Save result in user variables ; ; ; e.g. $SET inty RET_2 $SET intz RET_3 etc. $EXIT ; ; No intersection found, print appropriate message ; . . %NO-INT ; $SET intx RET_1 $PRINT \"NO INTERSECTION FOUND\" $EXIT 3 Digit 3.1 Introduction The Digit program has been designed to enable a user to digitize a drawing placed on a digitizing tablet attached to the host computer. It can also be used to read/write/edit point data which is in Britfair format. 3.1.1 Main Buttons The Main window has the following buttons across the top. Button Use Load Loads a file of offsets saved in the Britfair format. Stern and Stem data in X and Z. Merge Used to join Britfair files together. Save Saves data tothe current file. The data for Section is saved in a file in the Britfair format. Stern and Stem data in X and Z. Save As Saves the data to a new file. Axis Setup the Axes Origin and Station numbers of the Ship. GPF Import of General Particulars to set view extent (otherwise view is based on min/max of data). Reset Resets the view extents. Window Allows the user to zoom in the view, using the left mouse button to drag a rectangle over the area of interest. Setup Calibrates the attached digitizer. Digitizer Exit Exit from the Program. Table 3: 1. Buttons and their usage. 3.1.2 View Using the mouse, various interactive facilities can be accessed for altering sections in the graphics view, these are: Mouse button Action LB Select nearest point to cursor LB + The current cursor position in the graphics view is echoed in the edit boxes (U and V) at the bottom left of the application window. 3.2 Digitization Procedure 3.2.1 Preparation for using the DIGIT Program First ensure that your digitizer is connected to the computer and that it is switched on. Attach the bodyplan you wish to digitize to the digitizer. It is usually best to mark the points you wish to digitize before you start work. 3.2.2 Setup the Ships Axis Press the Axis button. A panel appears that allows you to set the Origin position and Section numbering convention for the Ship. If the origin is set to FP then the program defaults to x-values being increasing in the aft direction. 3.2.3 Calibrate the digitizer to the drawing Enter the LBP of the ship in the appropriate entry field. Press the Setup Digitizer button. A panel appears that allows you to calibrate the digitizer. Start by selecting the correct COM Port. Select the type of digitizer you are using, the current options are: Operates at 9600 baud, Odd parity, 8 data bits and 1 stop bit. The digitizer should be set toSummaGraphics: operated in the following data format: Output Format: MM format, 5 byte binary Tablet origin Lower left Co-ordinate system Absolute Report mode Point Report rate approx. 100 Resolution 500 lpi Table 3: 3. SummaGraphics's Parameters. CALCOMP Operates at 9600 baud, Even parity, 7 data bits and 1 stop bit. The digitizer should be set to 9100: operated in the following data format: Output Format ASCII Format 3, CPxxxxxyyyyy 3.2.4 To Digitize a Bodyplan Once the digitizer is calibrated it may be used for data entry. Press New and enter the longitudinal position of the section in the Section position box. Press the Digitize button, and then digitize each point on the hullform, start at the lowest point and working up towards the highest. The four buttons on the digitizing puck perform the following functions: Button 1 enters an ordinary point Button 2 enters an ordinary point Button 3 enters an knuckle point Button 4 terminates the digitization process At the end of digitizing each section, turn the digitizer input off by pressing button four on the digitizer puck. Start a new section by entering a new Section position and continue the digitization process. Sections must be entered from the baseline up, i.e. so that the points form an anticlockwise arc. For ships with a large flat of keel, enter a point mid-way along the flat of keel to help the definition. 3.2.5 Editing Data To create a new Section press the New button this will cause a dialog box to appear. Enter the longitudinal position of the section in the Section position, press OK and then press Digitize and then use the digitizing puck to enter the points. To delete a Section select the required curve from the pull-down list and then press the Delete button. To create a new Stem or Stern select the required radio button and then press Digitize and then use the digitizing puck to enter the points. You can change point types from ordinary to a knuckle and vice versa by selecting the point from the graphics screen or from the point list and then picking the Ordinary or Knuckle radio button. You can change the values of any point by selecting it and changing the values in the text edit fields at the head of the point list and then pressing the Set button. You can delete any point by selecting it and pressing the Delete button. To copy a section press the Copy button. This will cause a dialog box to appear. Enter the longitudinal position of the section in the Section position then press OK. The Scaling and Translation functions operate on the currently viewed set of curves e.g. if Current Only is selected then whatever curve is visible is changed, if Aft Sections is selected then all aft sections are changed etc. To scale or translate a curve select it as described above and press the appropriate button (Scale or Trans). A dialog will be displayed in which the required U and V translations can be given. 3.2.6 Loading / Saving Data from Files To input a hullform from an offset file select the Load button. A dialog box will appear that allows you to select the offsets file to be used. For Section data the offsets must be held in the Britfair format. The default file extension is BRI, which is the default file extension for Britfair files. This may changed using the File Type list at the bottom right of the dialog. After successfully importing a hullform the program will display all the sections for inspection. For Stem and Stern data the points must be held in X and Z column format. The default file extension is .DAT. If you have entered a series of offsets by hand or by using the digitizer you may wish to save them in a file. From the main dialog press Save As, supply a file name and your data will be saved. The data will be in Britfair format for Sections and X & Z format for the Stem and Stern. Having altered a file of offsets, the changes can simply be saved in the file by pressing Save. 3.3 Dialogs 37 / 40 Figure 3:1. Axis Dialog. Figure 3:2. Main Dialog. Figure 3:3. Setup Dialog for Normal Axis Ship 4 Plot 4.2.1 Tribon Solutions General Plot File The Tribon Solutions general plot file (usually with the extension *.PRN) can be created from the following Tribon Solutions programs: Form Lines 38 / 40 Surface 4.2.2 Export Files A plot can be stored in the general plot file, and can also be exported to other various other files formats for use in other computer packages, such as word processors, or for printing to a plotter. The following file formats are supported for export: HPGL file HPGL2 file Benson file DXF file 4.2.3 Import DXF Files A DXF file can be imported. Then an output plot. File for the following file formats that supported for export. 4.3 Screen Based Reference Guide This section provides a reference guide for the input screens used by Plot, together with a technical description of the data requirements for each input screen. To start-up Plot double click on the Plot icon in the Tribon M3 Initial Design application group. Figure 4:1. The Main Icon Bar 4.3.2 Using icons to control Plot Once Plot has been started, the following screen appears. Not all the icons will be available initially, however, they are all explained below. All iconic facilities are available from menu commands as well. Help on these icons is available by moving the mouse onto the icon and holding down the left hand button. The function of the icon is then displayed in the status bar. If the mouse is moved off the icon with the left hand mouse button still held down, and then released, the icon is not actioned. To start a new drawing in Plot, select FILE / NEW or press the icon and the following screen appears Figure 4:2. The New Dialogue. Enter the X and Y co-ordinates of the top left and bottom right hand corners of the new plot in metres. If a plot file has been previously created, whether, in Plot or one of the other Tribon Solutions programs, it can be edited by selecting FILE /OPEN or pressing the icon. A file selection dialogue appears for the user to select the required plot file. Once a drawing session is underway (either with the NEW or OPEN commands), the floating palette and Options dialogue appear and become active (both shown below). Figure 4:3. Plot Floating Palette. Help on the above floating palette icons is available in a similar fashion to the toolbar icons, described above. 39 / 40 4.3.3 The Options Dialogue The Options dialogue contains information about the current selection in Plot. The user can specify the line type and colour, the arrow head height size (mm), the angle, width (mm), height (mm) and justification of any text to be entered, the rid type and the number of plots in the file to be displayed. After specifying text or grid details, the Apply button should be pressed for these changes to take effect. Figure 4:4. The Options Dialogue. The dialogue is used to control the following settings as explained below: 5 LINES2AUTOKON The LINES2AUTOKON translator enables the user to convert a Tribon M3 Initial Design Lines data store into a dfrec file for use in the AUTOKON system. 6 AUTOKON2LINES The Autokon2lines interface program enables the user to convert a dfrec file into a Lines data store 40 / 40 因篇幅问题不能全部显示，请点此查看更多更全内容