5.13测量Measuring
测量工具条Measure Toolbar，包括三种测量类型：
Measure Minimum Distances and Angles: Click this icon, set the
desired measure type, the measure mode and select a surface, edge or vertex.
Measure Properties: Select the desired item and click this icon. Measure Inertia: Click this icon and select the desired item
1. 测量距离和角度Measuring Distances & Angles between Geometrical
Entities
This task explains how to measure minimum or
maximum distances and, if applicable, angles between geometrical entities (points, surfaces, edges, vertices and entire products).
（1） 测量类型measure
type：
? Between (default type):
between selected items. ? Chain
measures distance and, if applicable, angle
: lets you chain measures with the last selected item becoming
the first selection in the next measure. ? Fan
: fixes the first selection as the reference so that you always
measure from this item.
（2） Defining Selection 1 & Selection 2 Modes：
Any geometry (default mode): measures distances and, if applicable, angles between defined geometrical entities (points, edges, surfaces, etc.). Note: The Arc center mode is activated in this selection mode.
（3） Defining the Calculation Mode：
? Exact else approximate (default mode): measures access exact data
and wherever possible true values are given. If exact values cannot be measured, approximate values are given (identified by a ~ sign).
? Exact精确: measures access exact data and true values are given. Note
that you can only select exact items in the geometry area or specification tree.
In certain cases, in particular if products are selected, a warning dialog box informs you that the exact measure could not be made.
? Approximate近似: measures are made on tessellated objects and
approximate values are given (identified by a ~ sign).
（4） Customizing Your Measure
You can, at any time, customize the display of the results in both the geometry area and the dialog
box.
To do so, click Customize... in the Measure Between dialog box and set your display in the Measure Between Customization dialog box.
Note: Measuring minimum distance, maxium distance and maximum distance from 1 to 2 are mutually exclusive options. Each time you change option, you must make your measure again.
Point 1 and point 2 give the coordinates of the two points between which the distance is measured.
2. 测量Measure Item
用于测量选择元素的特性。This task explains how to measure the properties
associated to a selected item (points, edges, surfaces and entire products).
（1） 定义Selection 1
模式（Defining the Selection 1 Mode）
? Any geometry
(default mode): measures the properties of
the selected item (point, edge, surface or entire product). ? Point only: measures the properties of points. Dynamic
highlighting is limited to points.
? Edge only: measures the properties of edges. All types of edge
are supported.
? Surface only: measures the properties of surfaces.
In the last three modes, dynamic highlighting is limited to points, edges or surfaces depending on the mode selected, and is thus simplified compared to the Any geometry mode.
（2） 定义计算模式Defining the Calculation Mode
? Exact else approximate (default mode): measures access exact data and
wherever possible true values are given. If exact values cannot be measured, approximate values are given (identified by a ~ sign).
? Exact: measures access exact data and true values are given. Note that you
can only select exact items in the geometry area or specification tree.
In certain cases, in particular if products are selected, a warning dialog box informs you that the exact measure could not be made.
? Approximate: measures are made on tessellated objects and approximate
values are given (identified by a ~ sign).
Click Customize... in the Measure Item dialog box to see the properties the system can detect for the various types of item you can select. By default, you obtain:
3. 测量惯性距Measure Inertia
This task explains how to measure the inertia properties of an object.
You can measure the inertia properties of both surfaces and volumes, as well as retrieve the density or surface density if valuated from V4 model type documents. You can also retrieve inertia equivalents set in Knowledgeware formulas. The area, density, mass and volume (volumes only) of the object are also calculated.
Measures are persistent: a Keep Measure option in the Measure Inertia dialog box lets you keep the current measure as a feature in the specification tree.
附录1
The following list contains all possible document types (in alphabetical order):
1. All Bitmap Files： Lets you browse BMP files from within a
session, without having to use another application.
2. All CATIA V4 Files ：Lets you open V4 documents such
as .model, .session or .library files.
3. All CATIA V5 Files：Lets you open V5 documents such
as .catalog or .CATAnalysis files, for example.
4. All CATIA CAA Files：Lets you browse CAA files such
as .CAABsk or .CAADoc files. 5. All Standard Files：Lets you browse files such as .igs, .wrl, .step
or .stp files.
6. All Vector Files ：Lets you browse files such as .cgm, .gl, .gl2
or .hpgl files.
7. 3dmap：Lets you browse 3dmap (i.e. spacemap representation)
files.
8. Act：Lets you browse process libraries which contain a number of
different classes or types of activities interactively defined by the user. For more information, see \with Process Libraries\DELMIA – DPM Process Planner User's Guide.
9. Asm：V4 Assembly Modeling document saved as an Assembly
Design document i.e. CATProduct. For more information, see the CATIA - Assembly Design User's Guide.
10. Bdf：Allegro specific format. For more information, see CATIA -
Circuit Board Design User's Guide.
11. Brd： Mentor Graphics specific format.
12. Catalog：Catalog documents. For more information, see Using
Catalogs.
13. CATAnalysis：Analysis document. For more information, see
CATIA - Generative Structural Analysis User's Guide.
14. CATDrawing：Generative Drawing or Interactive Drafting
document. For more information about the Generative Drafting and Interactive Drafting workbenches, see the CATIA -
Generative Drafting User's Guide and CATIA - Interactive Drafting User's Guide.
15. CATfct：Feature Dictionary and Business Knowledge Template
files. Refer to Starting the Feature Dictionary Editor and to the CATIA - Business Process Knowledge Template User's Guide.