CN105718672B - A kind of CAD Object selection method - Google Patents
A kind of CAD Object selection method Download PDFInfo
- Publication number
- CN105718672B CN105718672B CN201610044613.4A CN201610044613A CN105718672B CN 105718672 B CN105718672 B CN 105718672B CN 201610044613 A CN201610044613 A CN 201610044613A CN 105718672 B CN105718672 B CN 105718672B
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- sections
- circle
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- selection method
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/15—Vehicle, aircraft or watercraft design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/60—Editing figures and text; Combining figures or text
Abstract
The present invention provides a kind of CAD Object selection method, sector frame needle selection of the present invention is picked up to along the entity that camber line arranges, and is improved pickup efficiency, is reduced maloperation, can reduce designer's workload, and typesetting accuracy is improved, and improves typesetting efficiency.
Description
Technical field
The present invention relates to the software packages more particularly to a kind of CAD of the CAD designed based on tire-mold text typesetting tool
Object selection method.
Background technique
Tire-mold text G- Design has the selection of quite a few enterprise to complete in AutoCAD.Text on tire-mold
Word is arranged along circular arc, there is an Arc-Aligned Text function in the Express functional module of AutoCAD at present,
The function only can write a typesetting on a circular arc.In addition to this without other correlation functions set up type.Tire-mold
It is rearrangement design of modifying to customer drawings text that enterprise's text G- Design part, which more works, and designer carries out text
Word rearrange either text spacing adjustment when, using in AutoCAD Move order or Rotate order adjusted one by one.
Tire-mold text designs part, and the text arrangement of client is generally unsatisfactory for processing request, carries out rearranging design.If
Meter personnel can only use mobile Move instruction and rotation Rotate instruction in CAD to be adjusted one by one to text.Such behaviour
The problems such as making that design efficiency is very low, and hiatus or reverse character order be easy to appear due to artificial problem.Tire-mold is set
It is exactly to set up type that meter, which most repeats scissors and paste, is less susceptible to malfunction in the case where text quantity is few, but in a secondary mold text
Number of words up to 300 or more when, adjust the spacing between text one by one, constantly repeatedly same operation, not only low efficiency, and
And accuracy rate can be reduced with designer's fatigue.Common target pick-up mode is a lectotype inside AutoCAD at present
With rectangular window selection mode, in addition there are also the selection modes being much of little use, and design for tire-mold, many character explanations
It is to be write out along circular arc, and very intensively, it is crucial for how accurately quickly selecting the part that needs operate.It is setting up type
When work, have target pick-up mode can not text on quick pick-up circular arc, be also easy that maloperation occurs in pick process.
In view of this, it is necessary to invent a kind of CAD target pick-up method that can satisfy tire-mold typesetting work.
Summary of the invention
The technical problem to be solved in the present invention is to develop the new functional module of AutoCAD, using fan-shaped frame needle
It is picked up to along the entity that camber line arranges, mitigates the workload of designer, improve design efficiency.The present invention provides one kind
CAD Object selection method is drawn a closed multi-section-line in two-dimensional surface by CAD mapping program and is extracted in the multi-section-line
The entity in portion is added in an empty choice set, the tool that the multi-section-line is made of two sections of straightways and two sections of arc sections
There are four the fan-shaped frame on vertex, this described two sections of arc sections share the same center of circle, wherein the convex value of two sections of straightways is 0, with
First angle point relative to the center of circle rotation angle angle1 and the second angle point relative to the center of circle rotation angle angle2 point
Start angle and termination point not as two sections of circular arcs, first angle point are any one vertex of fan-shaped frame, described the
Two angle points are with another non-conterminous vertex of the first angle point on fan-shaped frame, and the method for drafting of the sector frame is as follows:
Step 1, the circular arc center of circle is picked up by interactive interface, note centre point is O, establishes pole as origin using center of circle O and sits
Mark system, draws polar axis OL horizontally to the right, obtains the central coordinate of circle；
Step 2, the first angle point is picked up by interactive interface and obtains the first angular coordinate, the second angle point of connection and center of circle O
Straight line 2 is obtained, remembers that the rotation angle between straight line 2 and polar axis OL is angle1；
Step 3, dragging function Jig is called, the second angle point is picked up in interactive interface dragging mouse and obtains the second angle point and sit
Mark, the second angle point of connection and center of circle O obtain straight line 2, remember that the rotation angle between straight line 2 and polar axis OL is angle2, formed by
The fan-shaped frame of two sections of straightways and two sections of arc sections composition.
Further, the convexity calculation formula of each line segment of the fan-shaped frame is as follows:
Bulge [0]=- GetBulge (angle2, angle1)；
Bulge [1]=0.0；
Bulge [2]=GetBulge (angle2, angle1)；
Bulge [3]=0.0
Wherein bulge [0]=- GetBulge (angle2, angle1) and bulge [2]=GetBulge (angle2,
It angle1 is) the convexity calculation formula of two sections of arc sections, bulge [1]=0.0 and bulge [3]=0.0 are two sections of straightways
Convexity calculation formula.
Further, it is first shut off interference figure layer, fan-shaped frame is then drawn and chooses entity.
Further, the entity includes character layer.
Further, the interference figure layer is the figure layer that can be interfered to character layer, including hidden layer and mark layer.
Further, to the entity setting up filter condition chosen in fan-shaped frame, the filter condition is text style, according to
The filter condition of setting, using the text for the specific character pattern chosen in fan-shaped frame as target text.
Further, the specific character pattern includes lines text and entity text.
Further, after picking up entity and being added to an empty choice set, the interference figure layer of either on or off.
Further, typesetting plug-in unit is arranged in AutoCAD based on the CAD Object selection method, the typesetting is inserted
Text of the part for two-dimensional surface sorts.
Sector frame of the present invention reduces maloperation, can reduce and set for being picked up along the entity that camber line arranges
Person works' amount is counted, typesetting accuracy is improved, improves typesetting efficiency.
Detailed description of the invention
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is flow diagram of the invention.
Fig. 2 is the schematic diagram of fan-shaped frame；
In Fig. 2, A, B, C, D are four vertex of fan-shaped frame, and O is the centre point of two arc sections.
Fig. 3 is the exemplary diagram that character pickup is carried out using fan-shaped frame.
Specific embodiment
Referring to Fig. 1, a kind of CAD Object selection method, including the following steps:
Step 1, system variable is modified, that is, closes interference figure layer, the interference figure layer is that can cause to do to character layer
The figure layer disturbed, including hidden layer and mark layer.
Step 2, filter condition is set, unwanted text style is filtered out, according to the filter condition of setting, is chosen specific
The text of text style.The specific character pattern includes lines text and entity text, and the entity text refers to that inside has
Fill the tubular wire text of entity.
Step 3, a closed multi-section-line is drawn in two-dimensional surface by CAD mapping program and extracted inside the multi-section-line
Entity, be added in an empty choice set, the multi-section-line is had by what two sections of straightways and two sections of arc sections formed
The fan-shaped frame on four vertex, this described two sections of arc sections share the same center of circle, wherein the convex value of two sections of straightways is 0, with the
One angle point relative to the center of circle rotation angle angle1 and the second angle point relative to the center of circle rotation angle angle2 distinguish
As the start angle and termination point of two sections of circular arcs, first angle point is any one vertex of fan-shaped frame, described second
Angle point is with another non-conterminous vertex of the first angle point on fan-shaped frame, and the convexity calculation formula of each line segment of the sector frame is such as
Under:
Bulge [0]=- GetBulge (angle2, angle1)；
Bulge [1]=0.0；
Bulge [2]=GetBulge (angle2, angle1)；
Bulge [3]=0.0
Wherein bulge [0]=- GetBulge (angle2, angle1) and bulge [2]=GetBulge (angle2,
It angle1 is) the convexity calculation formula of two sections of arc sections, bulge [1]=0.0 and bulge [3]=0.0 are two sections of straightways
Convexity calculation formula.
Step 4, the interference figure layer of either on or off needs to execute deletion, duplication, battle array to the entity in choice set according to operation
The order such as column, mobile, rotation, scaling.
As shown in Fig. 2, the specific drawing process of the sector frame is as follows:
1, the center of circle O is picked up by interactive interface, establishes polar coordinate system using center of circle O as origin, draws horizontally to the right
Polar axis OL obtains the central coordinate of circle；
2, the first angle point is picked up by interactive interface and obtains the first angular coordinate, the second angle point of connection is obtained with center of circle O
Straight line 2 remembers that the rotation angle between straight line 2 and polar axis OL is angle1, and first angle point is A point or B point；
3, dragging function Jig is called, pick up the second angle point in interactive interface dragging mouse and obtains the second angular coordinate, even
It connects the second angle point and center of circle O obtains straight line 2, remember that the rotation angle between straight line 2 and polar axis OL is angle2, formed straight by two sections
The fan-shaped frame of line segment and two sections of arc sections composition；When the first angle point is A point, second angle point is D point；When the first angle point is
When B point, second angle point is C point.
As shown in figure 3, carrying out text pick-up operation using fan-shaped frame, pickup is easy, quick, accurate, and greatly reduction is falsely dropped
Probability.
" text " mentioned in the present invention refers to all characters that can be used for inputting character layer, including and is not limited to the Chinese
Word, letter, number, symbol etc..
Typesetting plug-in unit is devised in AutoCAD based on the CAD Object selection method, the typesetting plug-in unit is used for two
Dimensional plane typesetting design, and the icon that fan-shaped frame choosing is arranged is operated for designer.
Using above-mentioned typesetting plug-in unit in AutoCAD interactive interface specific steps are as follows:
Click function icon → pickup centre point → the first angle point of pickup → the second angle point of pickup → completion target pick-up behaviour
Make.
In conclusion sector frame of the present invention is picked up for arcuation entity, maloperation is reduced, can reduce and set
Person works' amount is counted, typesetting accuracy is improved, improves typesetting efficiency.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing
It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.
Claims (8)
1. a kind of CAD Object selection method is drawn a closed multi-section-line in two-dimensional surface by CAD mapping program and is extracted
Entity inside the multi-section-line is added in an empty choice set, which is characterized in that the multi-section-line is by two sections of straightways
Tool with two sections of arc sections composition is there are four the fan-shaped frame on vertex, this described two sections of arc sections share the same center of circle, wherein two sections
The convex value of straightway is 0, with the first angle point relative to the rotation angle angle1 in the center of circle and the relatively described circle of the second angle point
For the rotation angle angle2 of the heart respectively as the start angle and termination point of two sections of circular arcs, first angle point is fan-shaped frame
Any one vertex, second angle point are with another non-conterminous vertex of the first angle point on fan-shaped frame, which draws
Method processed is as follows:
Step 1, the circular arc center of circle being picked up by interactive interface, note centre point is O, polar coordinate system is established using center of circle O as origin,
Polar axis OL horizontally to the right is drawn, the central coordinate of circle is obtained；
Step 2, the first angle point is picked up by interactive interface and obtains the first angular coordinate, the first angle point of connection is obtained with center of circle O
Straight line 1 remembers that the rotation angle between straight line 1 and polar axis OL is angle1；
Step 3, dragging function Jig is called, pick up the second angle point in interactive interface dragging mouse and obtains the second angular coordinate, even
It connects the second angle point and center of circle O obtains straight line 2, remember that the rotation angle between straight line 2 and polar axis OL is angle2, formed straight by two sections
The fan-shaped frame of line segment and two sections of arc sections composition.
2. CAD Object selection method according to claim 1, which is characterized in that be first shut off interference figure layer, then draw
Fan-shaped frame chooses entity.
3. CAD Object selection method according to claim 1, which is characterized in that the entity includes character layer.
4. CAD Object selection method according to claim 2, which is characterized in that the interference figure layer is can be to character layer
The figure layer interfered, including hidden layer and mark layer.
5. CAD Object selection method according to claim 2, which is characterized in that the entity setting up chosen in fan-shaped frame
Filter condition, the filter condition is text style, according to the filter condition of setting, the specific character sample that will be chosen in fan-shaped frame
The text of formula is as target text.
6. CAD Object selection method according to claim 5, which is characterized in that the specific character pattern includes lines
Text and entity text.
7. CAD Object selection method according to claim 2, which is characterized in that pick up entity and be added to one it is empty
After choice set, the interference figure layer of either on or off.
8. CAD Object selection method according to any one of claims 1 to 7, which is characterized in that based on the CAD target
Typesetting plug-in unit is arranged in choosing method in AutoCAD, and text of the typesetting plug-in unit for two-dimensional surface sorts.
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| CN105718672A CN105718672A (en) | 2016-06-29 |
| CN105718672B true CN105718672B (en) | 2019-02-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106919737A (en) * | 2017-01-19 | 2017-07-04 | 天津市市政工程设计研究院 | A kind of level-crossing sighting distance analysis method based on AutoCAD |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371821A (en) * | 2016-08-22 | 2017-02-01 | 深圳市科利德光电材料股份有限公司 | Method for performing frame selection of entity by using closed graph |
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| CN101213440A (en) * | 2005-06-28 | 2008-07-02 | 株式会社普利司通 | Method for forming master data for inspecting protruding and recessed figure |
| CN104102434A (en) * | 2013-04-11 | 2014-10-15 | 张平 | CAD (Computer-Aided Design) tool switching method |
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|---|---|---|---|---|
| CN101213440A (en) * | 2005-06-28 | 2008-07-02 | 株式会社普利司通 | Method for forming master data for inspecting protruding and recessed figure |
| CN104102434A (en) * | 2013-04-11 | 2014-10-15 | 张平 | CAD (Computer-Aided Design) tool switching method |
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| ＣＡＤ二次开发在轮胎胎侧字样图设计中的应用;黄明新等;《轮胎工业》;20151231;第35卷(第10期);第607-610页 |
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| CN106919737A (en) * | 2017-01-19 | 2017-07-04 | 天津市市政工程设计研究院 | A kind of level-crossing sighting distance analysis method based on AutoCAD |
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