CN113051885B - AutoCAD-based design drawing rapid typesetting method - Google Patents

Abstract

The invention discloses a rapid typesetting method for design drawings based on AutoCAD, which adopts computer language to call AutoCAD functions to realize automatic operation; the steps are as follows: step 1, drawing frame preparation; step 2, model space drawing; step 3, layout space drawing; 4. Improve the frame information; Step 5. Generate a directory. The whole process of typesetting of the invention adopts computer language to call AutoCAD functions to realize parameterized operation, which is efficient, fast, easy to use, high reliability, good in generality, strong in compatibility and wide in application range.

Description

A Rapid Typesetting Method of Design Drawings Based on AutoCAD

technical field

The invention relates to the technical field of computer-aided design, in particular to a rapid typesetting method for design drawings based on AutoCAD.

Background technique

AutoCAD (Auto Computer Aided Design) is a computer-aided design software widely used in the field of engineering design. It has powerful functions of drawing and processing graphics, and is widely used in many engineering fields such as roads, tunnels, and rail transit. As a general-purpose drawing software, the software configures a secondary development interface for the user, and the user can realize the graphic processing function in the AutoCAD file through programming in multiple languages.

A normal design drawing consists of two parts: graphics and frame. Graphical content is a symbol that expresses design intentions, such as lines, words, and charts; a frame is a tool for identifying graphic content, and the graphic content is managed in an orderly manner through the frame. In order to facilitate the identification and management of drawings, each drawing frame contains the following information: project name, project number, drawing name, drawing number, designer, completion time, etc.

At present, the drawings designed by AutoCAD are used for typesetting, and the drawing frame is usually made into a block, and the attached information of the drawing frame is attached to the drawing frame in the form of attributes, and then the drawing frame is inserted into the AutoCAD layout. Viewports are opened in the area to display graphics content. During the typesetting process, actions such as inserting picture frames, opening views, modifying picture names and numbers, and forming directories all need to be modified manually. In the conventional drawing layout method, the manual operation steps are as follows: 1. The designer uses a polygon similar to the viewport border of the drawing area of the drawing frame to separate the graphics in the model space; 2. Insert the drawing frame in the layout, set the viewport, And make the viewport polygon coincide with the polygon that separates the graphics in the model; 3. Modify the picture name and picture number corresponding to each inserted picture frame one by one; 4. Count the picture names and picture numbers of all drawings and write them into the directory.

For projects with obvious linear characteristics of design objects such as roads, tunnels, and rail transit, the number of drawings in plan and longitudinal section is large, and conventional methods are used for drawing layout, which takes a long time. At the same time, when the number of intermediate drawings increases Or when the adjustment is reduced, the drawing number of each subsequent drawing needs to be manually modified, which also takes a lot of time.

At present, there is also a secondary development of AutoCAD in China for the above problems, and a method of inserting drawing frames in batches is proposed. However, the drawing frames inserted by these methods can only be numbered in sequence, and the automatic modification of drawing names and drawing numbers cannot be performed. The ability to automatically generate a directory limits its scope of use.

Therefore, how to quickly match the drawing name, drawing frame, drawing number for the drawing content in the model space and generate a drawing catalog has become a technical problem that those skilled in the art need to solve urgently.

SUMMARY OF THE INVENTION

In view of the above-mentioned defects of the prior art, the present invention provides a rapid typesetting method for design drawings based on AutoCAD. A wider range of quick layout methods for AutoCAD drawings.

In order to achieve the above purpose, the present invention discloses a rapid typesetting method for design drawings based on AutoCAD, which adopts computer language to call AutoCAD functions to realize automatic operation; the steps are as follows:

Step 1, frame preparation;

Step 2. Model space map;

Step 3. Layout space into a map;

Step 4. Improve the frame information;

Step 5. Generate a directory.

Preferably, in the step 1, the steps of frame preparation are as follows:

Step 1.1. Save the frame used for typesetting as a separate CAD file;

Step 1.2. Open the frame file, check the frame form and frame information, and perform preprocessing;

Step 1.3. Perform the preprocessing according to different types of picture frames, as follows:

When the whole drawing frame is a CAD block and the drawing frame information exists in the form of block attributes, the drawing frame meets the requirements;

When the frame line is a CAD block and the frame information is ordinary text, change the ordinary text into attribute text;

When the frame is scattered with lines and texts, make the frame into a block, and set the frame information as attribute text.

More preferably, the frame information includes general information and special information;

The general information is the same content that appears repeatedly in the same type of picture frame, including project name, project number and picture frame size;

The special information is the drawing name and drawing number identifying the identity of the specific drawing;

In the preprocessing process, at least one item name or item number, and attributes of drawing name, drawing number, and drawing frame category are converted into text.

Preferably, in the step 2, the steps of dividing the model space into a map are as follows:

Step 2.1. Open the CAD file to be typeset, insert the frame file into the layout space, set the viewport rectangle in the frame drawing area, and read the relative positional relationship between the viewport rectangle and the frame;

Step 2.2, according to the drawing scale, take the viewport rectangular frame as the benchmark, calculate the size of the model space sub-picture frame corresponding to the viewport rectangular frame;

Step 2.3, read in the graphics baseline information, specify the starting point mileage of the inserted frame, and calculate the starting point mileage coordinates;

Step 2.4. Make a circle with the starting point of the sub-picture as the center and the width of the rectangular frame of the sub-picture as the radius;

Step 2.5. Place the left midpoint of the subframe at the start point of the subframe, and the midpoint of the right line of the subframe at the intersection of the drawn circle and the baseline, draw the subframe, and attach the number attribute to the subframe;

Step 2.6. Specify the lap distance between the frames, and calculate the lap distance of the sub-frames in the model space according to the drawing scale;

Step 2.7. Make a circle to intersect with the baseline, the left intersection point is the starting point of the second sub-frame, that is, the left midpoint, and the second sub-frame is made in the same way as before;

Step 2.8. Repeat steps 2.4 to 2.7 to continue splitting until the right midpoint of the last splitting frame exceeds the corresponding splitting end mileage of the baseline.

More preferably, the numbering rule of each drawing frame is as follows: the numbering of the first drawing sub-frame in the same CAD file is set by human-computer interaction, and the number value of subsequent drawing sub-frames increases by 1 by default.

Preferably, in the step 3, the steps of forming a map of the layout space are as follows:

Step 3.1. According to the result of the sub-picture in step 2, draw the viewport according to the set size and position of the viewport rectangle, and then align the viewport rectangle with the model sub-picture frame with the smallest number in the model. ;

Step 3.2. Before aligning and filling, use the horizontal edge of the model sub-frame as the X-axis to establish a local coordinate system in the model space;

Step 3.3. After the frame viewport of the layout space matches the model sub-frame, write the number of the model sub-frame into the drawing number of the frame property to form the first drawing;

Step 3.4, insert the next frame in the layout according to the specified offset value, repeat step 3.2 to step 3.3 until all model sub-frames are matched.

Preferably, in the step 4, the steps of improving the picture frame information are as follows: traverse all the picture frames inserted in the graph, filter the picture frames with the same item name or item number, and write their attachment information into the picture frame information statistics table, Each row record in the table is a frame information.

After the drawing number of the drawing frame is updated, the corresponding numbering property of the model sub-drawing frame is updated to the corresponding drawing number.

More preferably, the picture frame information statistical table adopts the interactive form of CAD secondary development, the information of the statistical table is associated with the picture frame information, the picture name and picture number are modified in the statistical table, and the corresponding picture frame information is automatically updated. .

Preferably, in the step 5, the step of generating a directory is as follows: write the screened frame information into a preset directory table to generate a directory; the directory table at least includes columns, rows, columns, and the spacing between rows and columns 5 items of input information.

More preferably, the screened frame information includes the name of the drawing, the number of the drawing and the name of the drawing frame.

Beneficial effects of the present invention:

The whole process of typesetting of the present invention adopts computer language to call AutoCAD functions to realize parameterized operation, which is efficient, fast, easy to use, high reliability, good in generality, strong in compatibility and wide in scope of application.

The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the purpose, characteristics and effects of the present invention.

Description of drawings

FIG. 1 shows a flowchart of an embodiment of the present invention.

Figure 2 shows a typical AutoCAD drawing in an embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating the state of a model space baseline and a sub-frame in an embodiment of the present invention.

FIG. 4 shows the corresponding relationship between the viewports of the layout space graph frame and the model space graph subframes in an embodiment of the present invention.

FIG. 5 shows a schematic diagram of elements of a frame information statistics table in an embodiment of the present invention.

Detailed ways

Example

As shown in Figure 1, the implementation steps of the AutoCAD-based rapid typesetting method for design drawings are as follows:

Step 1, frame preparation.

A typical drawing sample is shown in Figure 2. The information other than the drawing area belongs to the content of the drawing frame. The size of the outer frame of the drawing frame is determined by the size of the drawing frame. The drawing frame contains multiple pieces of drawing information, and each piece of drawing information corresponds to a rectangular storage area.

Save layout frames as separate CAD files. Open the frame file, check the frame form and frame information, and preprocess the frame and information. When the entire drawing frame is a CAD block and the drawing frame information exists in the form of block attributes, the drawing frame meets the requirements; when the drawing frame line is a CAD block and the drawing frame information is ordinary text, the ordinary text is changed into attribute text; When the line and text are not combined into a block, the frame is made into a block, and the frame information is set to attribute text.

The frame information is divided into general information and special information.

The general information is the same content that appears repeatedly in the same type of drawing frame, including the project name, project number, drawing size, etc.; the exclusive information is the drawing name and drawing number that identify the identity of the specific drawing.

The preset value of the general information of the frame is filled in according to the actual situation of the project, and the preset value of the exclusive information is not limited. In the processed drawing frame, the following information must be attribute text: at least one item of item name or item number, and three items of drawing name, drawing number, and drawing frame type.

Step 2. Partition the model space.

Open the CAD file to be typeset, insert the drawing frame file into the layout space, define the viewport rectangular frame range in the drawing area shown in Figure 2, read in the side length of the viewport rectangular frame and its relative distance from the corners of the drawing frame . According to the drawing scale and the viewport rectangle as the benchmark, the size of the model space sub-frame corresponding to the viewport rectangle is calculated. Make a subframe as a block and attach a property that records the subframe number.

The graph with baseline targeted by this method is shown in Figure 3. Read in the graphics baseline information, specify the starting point mileage of the model sub-graph, and calculate the starting point mileage coordinates. Take the starting point of the sub-picture as the center, and the horizontal length of the rectangular frame of the sub-picture as the radius to make a circle. Place the midpoint of the left vertical line of the sub-frame at the center of the circle, and the midpoint of the right vertical line of the sub-frame at the right intersection of the drawn circle and the baseline, draw a sub-frame, and write a sub-frame number property number value. Next, according to the set overlap distance between the frames, calculate the overlap length of the model space sub-frames according to the drawing scale, and then use the overlap length to make a circle at the center of the right vertical edge of the previous sub-frame. The left intersection of the arc and the baseline is the midpoint of the left vertical edge of the next sub-frame.

Repeat the previous steps to draw the next sub-frames until the midpoint of the right vertical edge of the last sub-frame exceeds the set end-point mileage of the sub-frame.

Sub-frame numbering rules: The number of the first sub-frame in the same CAD file is set by human-computer interaction, and the number value of subsequent sub-frames is automatically incremented by one by default.

Step 3. Layout the space into a map.

As shown in Figure 4, in the frame inserted in step 2, draw the viewport according to the set size and position of the viewport rectangle, and then sort the viewport rectangle with the model subframe with the smallest number in the model. Aligned full. Before aligning and filling, a local coordinate system is established in the model space with the horizontal edge of the model sub-frame as the X-axis. After the frame viewport of the layout space matches the model sub-frame, write the number of the model sub-frame into the drawing number of the frame properties to form the first drawing.

Next, insert a second frame in the layout according to the specified offset value, and match the viewport for the second model sub-frame according to the above processing method to form a second drawing. Do this in sequence until all model sub-frames match the frame.

Step 4. Improve the frame information.

Traverse all the frames inserted in the graph, filter the frame information of the same item name or item number, and write its attachment information into the frame information statistics table. Each row of records in the table is a frame information. Figure 5 shows a schematic diagram of the elements of the frame information statistics table. The statistical table adopts the interactive form of CAD secondary development. The information of the statistical table is associated with the picture frame information, and the picture name and picture number are modified in the statistical table, and the corresponding picture frame information is automatically updated. After the drawing number of the drawing frame is updated, the corresponding numbering property of the model sub-drawing frame is updated to the corresponding drawing number.

Step 5. Generate a directory.

Write the frame information filtered by item number in the statistical table: drawing name, drawing number, and drawing frame name into the preset catalog table to generate a catalog.

At this point, the layout of the drawings is completed.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

Claims (9)

1. Based on AutoCAD-based rapid layout method of design drawings, using computer language to call AutoCAD functions to realize automatic operation; the steps are as follows: Step 1, frame preparation; Step 2. Model space map; The steps for model space partitioning are as follows: Step 2.1. Open the CAD file to be typeset, insert the frame file into the layout space, set the viewport rectangle in the frame drawing area, and read the relative positional relationship between the viewport rectangle and the frame; Step 2.2, according to the drawing scale, take the viewport rectangular frame as the benchmark, calculate the size of the model space sub-picture frame corresponding to the viewport rectangular frame; Step 2.3, read in the graphics baseline information, specify the starting point mileage of the inserted frame, and calculate the starting point mileage coordinates; Step 2.4. Make a circle with the starting point of the sub-picture as the center and the width of the rectangular frame of the sub-picture as the radius; Step 2.5. Place the left midpoint of the subframe at the starting point of the subframe, and the midpoint of the right line of the subframe at the intersection of the drawn circle and the baseline, draw the subframe, and attach the number attribute to the subframe; Step 2.6. Specify the lap distance between the frames, and calculate the lap distance of the model space sub-frames according to the drawing scale; Step 2.7. Make a circle to intersect with the baseline, the left intersection point is the starting point of the second sub-frame, that is, the left midpoint, and the second sub-frame is made in the same way as before; Step 2.8. Repeat steps 2.4 to 2.7 to continue splitting until the right midpoint of the last splitting frame exceeds the corresponding splitting end mileage of the baseline; Step 3. Layout space into a map; Step 4. Improve the frame information; Step 5. Generate a directory. 2. the rapid typesetting method based on AutoCAD according to claim 1, is characterized in that, in described step 1, the step of drawing frame preparation is as follows: Step 1.1. Save the frame used for typesetting as a separate CAD file; Step 1.2. Open the frame file, check the frame form and frame information, and perform preprocessing; Step 1.3: Perform the preprocessing according to different types of frames, as follows: When the whole drawing frame is a CAD block and the drawing frame information exists in the form of block attributes, the drawing frame meets the requirements; When the frame line is a CAD block and the frame information is ordinary text, the ordinary text is changed into attribute text; When the frame is scattered with lines and texts, make the frame into a block, and set the frame information as attribute text. 3. The AutoCAD-based quick typesetting method for design drawings according to claim 2, wherein the drawing frame information includes general information and special information; The general information is the same content that appears repeatedly in the same type of picture frame, including project name, project number and picture frame size; The special information is the drawing name and drawing number identifying the identity of the specific drawing; In the preprocessing process, at least one item name or item number, and attributes of drawing name, drawing number, and drawing frame category are converted into text. 4. the fast typesetting method of design drawings based on AutoCAD according to claim 1, is characterized in that, the numbering rule of each drawing frame is: the numbering of the first sub-drawing frame in the same CAD file is set by human-computer interaction. The number value of the subsequent sub-frames will increase by 1 by default. 5. the rapid typesetting method of design drawings based on AutoCAD according to claim 1, is characterized in that, in described step step 3, the step that layout space is drawn into is as follows: Step 3.1. According to the result of the sub-picture in step 2, draw the viewport according to the set size and position of the viewport rectangle, and then align the viewport rectangle with the model sub-picture frame with the smallest number in the model. ; Step 3.2. Before aligning and filling, establish a local coordinate system in the model space with the horizontal edge of the model sub-frame as the X-axis; Step 3.3. After the frame viewport of the layout space matches the model sub-frame, write the number of the model sub-frame into the drawing number of the frame property to form the first drawing; Step 3.4, insert the next frame in the layout according to the specified offset value, repeat step 3.2 to step 3.3 until all model sub-frames are matched. 6. the fast typesetting method of design drawings based on AutoCAD according to claim 1, is characterized in that, in described step step 4, the step of perfecting the picture frame information is as follows: traverse all picture frames inserted in the graph, filter identical project name Or the picture frame of the project number, write its attachment information into the picture frame information statistics table, and each row of records in the table is a picture frame information; After the drawing number of the drawing frame is updated, the corresponding numbering property of the model sub-drawing frame is updated to the corresponding drawing number. 7. The rapid typesetting method for design drawings based on AutoCAD according to claim 6, wherein the drawing frame information statistical table adopts the interactive form of CAD secondary development, and the information of the statistical table is associated with the drawing frame information, Modify the figure name and figure number in the statistical table, and the corresponding figure frame information will be automatically updated. 8. the fast typesetting method of design drawings based on AutoCAD according to claim 1, is characterized in that, in described step step 5, the step of generating catalog is as follows: the picture frame information screened out is written into preset catalog table, A directory is generated; the directory table includes at least five items of input information: column, row, column, and row and column spacing. 9 . The AutoCAD-based rapid typesetting method for design drawings according to claim 8 , wherein the screened out drawing frame information includes drawing name, drawing number and drawing frame name. 10 .

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