JPH05165904A - Method and device for preparing dimension line - Google Patents

Abstract

PURPOSE:To obtain a satisfactory and suitable drawing output result regardless of the kind of an output device by automatically describing dimension lines in a serial describing form or a parallel describing form without executing the multiple write of data concerning extension lines. CONSTITUTION:Based on the information of measuring points, dimensional positions and overlapped extension lines obtained by a measuring point instructing part 13, dimensional position instructing part 14 and overlap discriminating part 16, a write/reload control part 18 successively describes the dimension line data concerning the measuring points instructed by the measuring point instructing part 13 onto drawing data displayed on a display 3 and stored in a memory 17 in the serial describing form or the parallel describing form so as not to overlap extension line data. A processing for preventing the extension line data from being overlapped at the write/reload control part 18 is executed so as not to write the extension lines in respect to the measuring points common for conventional dimension lines in the case of the serial describing form and executed so a to describe only the extension line corresponding to the outer-most dimension line in respect to the extension line corresponding to the common measuring point in the case of the parallel describing form.

Description

Detailed Description of the Invention

[0001]

The present invention relates to CAD (computer-aid).
The present invention relates to an ed design) system, and more particularly, to a dimension line creating method and apparatus for appropriately writing dimension lines in drawing data created by a CAD system in a series entry or parallel entry format.

[0002]

2. Description of the Related Art When using a CAD system, C
Ordinary vertical dimension in drawing data created by AD system (draws auxiliary dimension line perpendicular to dimension line)
I want to write in a serial entry format in which diagonal dimensions (draw auxiliary dimension lines diagonally with respect to the dimension lines), etc. are entered in series in series, or in a parallel entry format in which these dimensions are overlapped and entered in parallel. Not a few things.

In a conventional CAD system, when automatically creating a dimension line capable of serial entry such as normal vertical dimension and diagonal dimension in the serial entry format, the serial entry is instructed in advance and the first Indicate the positions of the first and second measurement points and the dimension line regarding the dimension, fill in the first dimension line, and then designate the next measurement point (for example, the third measurement point) A dimension line between a measurement point (for example, a third measurement point) and a previous measurement point (for example, a second measurement point) adjacent to the measurement point is written in series on the first dimension line, and the next measurement point is described. By sequentially repeating the above instructions as needed, the dimension lines are sequentially entered in the serial entry form.

Further, in the conventional CAD system, in the case of automatically creating a dimension line capable of parallel writing such as normal vertical dimension and diagonal dimension in the parallel writing format,
Instructing parallel writing beforehand, indicating the positions of the first and second measurement points and the dimension line for the first dimension, and after writing the first dimension line, the next measurement point (for example, the third measurement point) ), The dimension line between the first measurement point and the next measurement point (for example, the third measurement point) is written in parallel to the first dimension line, and By sequentially repeating the instructions as needed, the dimension lines are sequentially entered in the parallel entry form.

[0005]

As described above, in the conventional CAD system, it is possible to automatically enter the dimension lines in the serial entry format and the parallel entry format, but in this automatic entry, the measurement is simply performed. Each time a point was sequentially given, the dimension line between the two points was repeatedly written in a serial entry format or a parallel entry format. That is, in the case of the serial entry format, the data of the dimension extension lines for the measurement points common to the two adjacent dimension lines are written in the same place twice, and in the case of the parallel entry format, the reference measurement point, that is, usually the first The data of the dimension extension line for one measurement point is written in multiples at the same location by the number of dimension lines that are written in parallel.

Therefore, even when a drawing or the like created by the CAD system is output as a hard copy by an output device such as a plotter, the dimension line between two points is output in multiple in the serial entry format or the parallel entry format. It will be. Therefore, in the case of the serial entry format, the dimension extension line for the measurement point common to two adjacent dimension lines will be drawn and output at the same location twice, and in the case of the parallel entry format, the standard measurement point will be output. That is, normally, the data of the dimension auxiliary line for the first measurement point is multiply drawn and output at the same position as the number of dimension lines that are written in parallel.

As described above, when the dimension auxiliary lines are drawn and output in the same place multiple times, if a so-called pen plotter or the like that draws and outputs with a pen such as a ballpoint pen, a pencil or a felt pen is used as the output device, Not only is the ink or core used wastefully consumed, but because the drawing is repeated on the same part of the output paper, the corresponding part of the output paper becomes thin or weak and easy to cut, or ink bleeding occurs at the corresponding part of the output paper. The dimension extension line is unnaturally thick and unsightly.

The present invention has been made in view of the above circumstances, and the dimension lines can be automatically entered in the serial entry format or the parallel entry format without writing the data of the dimension extension lines in a multiplexed manner. It is an object of the present invention to provide a dimension line creating method and apparatus that can obtain a good and appropriate drawing output result regardless of the apparatus.

[0009]

A dimension line creating method according to the present invention comprises a selection step of selecting a dimension line entry in which at least one of series entry and parallel entry is possible when entering dimensions on drawing data. A basic measurement point designating step for designating two measurement points on the drawing to be dimensioned, and a dimension position designating step for designating the position of the dimension line on the drawing to be dimensioned are displayed and stored. A basic writing step for writing dimension data on the drawing data based on the instructions by the measuring point designating step and the dimension position designating step, and an additional measuring point designating step for designating another measuring point on the drawing to which the dimension is to be written. When,
A determination step of determining whether or not the dimension line data written in the basic writing step and the dimension line data corresponding to the instruction of the additional measurement point instruction step have overlapping dimension extension lines at the same location; On the stored drawing data, the dimension data is written in addition to the dimension line written in the basic writing step based on the instruction in the additional measurement point instruction step, and the overlap determined in the determination step is performed. If there are dimension extension lines, the additional dimension extension line is characterized in that only one of the overlapping dimension extension lines is written as data.

A dimension line creating apparatus according to the present invention is a dimension line creating apparatus for entering dimensions on drawing data, for inputting a command including a dimension line entry command capable of at least one of series and parallel entry. Command input means, measurement point designating means for designating a measurement point on the drawing to be dimensioned, dimension position designating means for designating a position of a dimension line on the drawing to be dimensioned, A serial / parallel detecting means for detecting that the measuring point instructing means has instructed the measuring points after the third point where the dimension line should be entered in series, and the serial / parallel detecting means indicates the third and subsequent measuring points. And a drawing stored and stored, which function when the detection is made and determine whether or not the dimension line data corresponding to the instruction of the measurement point has an overlapping dimension extension line at the same position. Day The dimension data is written on the above based on the instruction by the measuring point designating means and the dimension position designating means, and when the overlapping determining means determines that there is an overlapping dimension auxiliary line, the overlapping dimension auxiliary line Is provided with a writing unit that controls so that only one is written as data.

[0011]

In the dimension line creating method and apparatus of the present invention, when a dimension is entered on drawing data, at least one of series and parallel entry can be selected to enter the dimension line, and two dimension lines on the drawing can be selected. Instruct the basic measurement point and the position of the dimension line, write the dimension data based on the above instruction on the drawing data, further instruct the additional measurement point on the drawing, and write the basic measurement previously written. It is determined whether the dimension line of the point and the dimension line data of the additional measurement point have overlapping dimension extension lines at the same location, and on the drawing data,
In addition to writing the dimension data in addition to the dimension line of the basic measurement point written previously, if there is the overlapping dimension extension line, only one of the overlapping dimension extension lines is written as data. Since it is set, it is possible to automatically fill in the dimension line in the serial entry format or parallel entry format without writing multiple data of the dimension extension line,
A good and appropriate drawing output result can be obtained regardless of the output device.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a CAD system incorporating a dimension line creating apparatus according to an embodiment of the present invention. In the CAD system of the present embodiment, when a dimension line is entered on drawing data in a series or parallel entry format, first and second measurement points for measuring the dimension, positions of dimension values on the drawing, and additional measurement points. On the basis of the above-mentioned instruction on the drawing data that is displayed and stored, the data of the dimension line in the serial format or the parallel format for the plurality of measurement points and the data of the dimension extension line do not overlap. Thus, it is possible to write sequentially.

The CAD system shown in FIG. 1 comprises a CAD processing section 1, an input device 2, a display 3, an output device 4 and a storage device 5. The CAD processing unit 1 is a CPU
A central processing unit (not shown) is included, and CAD processing including dimension line creation processing is executed. The input device 2 includes an operation input device such as a keyboard and a pointing device such as a mouse, and inputs operation input information by an operator and other external information necessary for CAD processing to the CAD processing unit 1.
To enter. The display 3 displays necessary information such as processed image information by the CAD processing unit 1 and information related to input by the input device 2. The output device 4 includes a plotter, a printer, or the like, and outputs the image information processed by the CAD processing unit 1 as a hard copy. The storage device 5 is composed of, for example, a disk device such as a hard disk device, operates in association with the CAD processing unit 1, and stores data such as image information before, after, and during processing as necessary. .

In this case, the CAD processing unit 1 uses the normal CA.
In addition to the configuration for executing the D process, the display control unit 11 and the command input unit for executing the dimension line creating process including the overlapping prevention function of the dimension auxiliary lines in the serial entry and the parallel entry according to the embodiment of the present invention. 12, measurement point designating unit 13, dimension position designating unit 14, serial / parallel detection unit 15, duplication determination unit 1
6, a memory 17 and a writing / rewriting control unit 18 are included.

The display controller 11 controls the display on the display 3. Under the control of the display control unit 11, drawing data and the like are displayed on the screen of the display 3. The command input unit 12 performs a process for allowing an operator to input a command including a dimension line writing command that enables at least one of serial and parallel writing by interactive operation with the screen of the display 3, for example. The command input unit 12 also performs a process for enabling the function of serially or parallelly writing the dimension line by an interactive operation with the screen of the display 3. Therefore, the command input unit 12 controls the display control unit 11 as necessary.

The measuring point designating section 13 functions at least when the dimension entry command in the serial entry or parallel entry format is input by the command input section 12, and for example, an interactive operation with the screen of the display 3 is performed. According to the above, when the dimension lines are entered in series on the drawing, the processing for causing the operator to instruct the first and second measurement points, that is, the basic measurement points and the additional measurement points is performed. Therefore, the measurement point instruction unit 13 also controls the display control unit 11 as necessary. The dimension position designating section 14 functions at least when the dimension line writing command is input by the command input section 12, and for example, when writing a dimension line on a drawing by an interactive operation with the screen of the display 3. A process for instructing the position of the dimension value by the operator is performed. In the case of serial entry, the instruction of the position of the dimension value by the dimension position instructing unit 14 is performed only once, for example, before or after the instruction of the first and second basic measurement points, or between them, In the case of parallel writing, after the instruction of the second measurement point, it is repeated for each instruction of the measurement point. Therefore, the dimension position designating section 14 also controls the display control section 11 as necessary.

The serial / parallel detection section 15 detects that the measurement point designating section 13 designates additional measurement points from the third point onward to perform serial writing or parallel writing. It should be noted that this detection may be performed until an additional measurement point after the third point is instructed and a dimension in the serial entry or parallel entry format corresponding to the additional measurement point after the third point is created. .. The overlap discriminating unit 16 discriminates the auxiliary dimension lines that will be overlapped by the serial writing or the parallel writing when the serial / parallel detecting unit 15 detects the serial writing or the parallel writing.

The memory 17 stores information including CAD drawing data to be displayed by the display control unit 11. The storage contents of the memory 17 are transferred to the storage device 5 as needed. The memory 17 may share the memory used in the normal CAD processing in the CAD processing unit 1. The writing / rewriting control unit 18 measures the measurement points and dimensions obtained by the measurement point designating unit 13, the dimension position designating unit 14, and the duplication determination unit 16 on the drawing data displayed on the display 3 and stored in the memory 17. Based on the information of the position and the overlapping dimension extension line, the dimension line data about the measurement point designated by the measurement point designating section 13 is provided in a serial entry format or a parallel entry format so that the dimension extension line data does not overlap. Write sequentially. The process for preventing the dimension auxiliary line data from overlapping in the writing / rewriting control unit 18 is such that, in the case of the serial entry format, the dimension auxiliary line for the measurement point common to the previous dimension line is not written, and it is parallel. In the case of the entry format, the dimension extension lines for common measurement points are written only for the dimension extension lines corresponding to the outermost dimension lines. Therefore, the writing / rewriting control unit 18 rewrites the data of the already written auxiliary dimension lines as needed.

Next, the operation related to the dimension line creation in the serial entry and parallel entry formats in the CAD system having such a configuration will be described in detail with reference to the flowchart shown in FIG. It is assumed that the processing shown in FIG. 2 is started as an interrupt processing by a command input during a normal drawing or editing operation in the CAD system.

First, the command input section 1 of the CAD processing section 1
When the operator selects a dimension line creation command by serial entry or parallel entry via 2 (step S
1), the system is set to a dimension line creation mode of serial entry or parallel entry format (step S2).

When the mode for creating dimension lines for serial entry or parallel entry is set, the measurement point designating section 13 of the CAD processing section 1 is set.
Thus, the operator instructs the first and second basic measurement points on the drawing to measure and fill in the dimension line (step S3). The instruction of the measurement point by the measurement point instruction unit 13 is requested by the operator through the screen of the display 3, and the operator performs an instruction operation using the cursor on the screen in response to the input.

Next, the dimension / position instructing section 14 instructs the operator of the position on the drawing where the dimension line corresponding to the basic measurement point should be entered (step S4). Similarly to the case of the measurement point, the dimension position instructing unit 14 requires the operator to input the dimension line position through the screen of the display 3, and the operator accordingly uses the cursor on the screen to instruct. It is performed by performing. When the position of the dimension line is designated in step S4,
By the writing / rewriting control unit 18, the dimension line position instructed in step S4 and the first instructed in step S3,
According to the second basic measurement point, the dimension line data for the basic measurement point is written on the drawing data displayed on the display 3 and stored in the memory 17 (step S5).

Further, the measurement point instructing section 13 measures the dimensions and instructs the operator of additional measurement points to be entered in series or in parallel (step S6). The additional measurement point designated in step S6 is also selected from the existing points on the drawing. When the additional measurement point is instructed in step S6, the direct / parallel detection unit 15 detects that the additional measurement point is instructed, and it is determined whether or not the parallel writing format is selected (step S7).

When it is determined in step S7 that the additional measurement point is designated in the serial entry format, the duplication determination section 16
Then, by analyzing the dimension lines that are to be entered in series based on the measurement points that have been input by the measurement point designating unit 13 up to that point, overlapping dimension extension lines are obtained by adding the measurement points (step S8). Based on this result, the writing / rewriting control unit 18 validates only the first dimension extension line as the dimension extension line in which the serial entry dimension lines overlap,
The auxiliary dimension lines generated later are ignored and the non-overlapping auxiliary dimension lines and dimension lines and the dimension values are written on the drawing data displayed on the display 3 and stored in the memory 17 (step S9). In this case, only the latter dimension extension line may be valid, but in that case it is necessary to delete the data of the dimension extension line already written, so only the first dimension extension line as described above. It is more rational to validate.

When the additional dimension line is written in step S9, it is determined whether or not the continuous dimension line entry is completed (step S10). If the serial entry of dimension lines is not completed, the process returns to step S6. The steps S6 to S9 are repeated to successively write the additional dimension line in the serial entry format while performing the dimension extension line overlap prevention processing. When it is determined in step S10 that the continuous entry of the dimension line is completed, the system proceeds to the next process.

When it is determined in step S7 that the additional measurement point is designated in the parallel entry format, the dimension / position designating section 14 further designates by the operator the position at which the dimension line corresponding to the additional measurement point should be entered. Is performed (step S11), and the duplication determination unit 16 performs parallel writing based on the positions of the measurement points and the dimension lines input by the measurement point instruction unit 13 and the dimension position instruction unit 14 up to that point. By analyzing the dimension line, overlapping dimension extension lines are obtained by adding measurement points (step S12).
Based on this result, the writing / rewriting control unit 18 validates only the dimension extension lines corresponding to the outermost dimension line that normally occurs at the end as the dimension extension lines that overlap the parallel writing dimension lines. The extension lines are removed and the extension lines corresponding to the outermost extension lines of overlapping extension lines, non-overlapping extension lines, extension lines, and dimension values
It is written on the drawing data displayed on the display 3 and stored in the memory 17 (step S13).

When the additional dimension line is written in step S13, it is determined whether or not the continuous dimension line entry is completed (step S10). If the parallel entry of dimension lines is not completed, the process returns to step S6. , Steps S6, S7, S
By repeating the processing of 11 to S13, the additional dimension lines are written in the parallel writing format while sequentially performing the dimension extension line overlap prevention processing. When it is determined in step S10 that the continuous entry of the dimension line is completed, the system proceeds to the next process.

Here, an example of a specific operation in this system will be described in detail. First, C as shown in FIG.
In the menu on the editing screen of the AD system, "Annotation"-
If you select "Execute" (annotation means to enter annotations other than drawing such as dimension lines), a menu as shown in Fig. 4 will be displayed. In this menu, select "Dimension"-"Element" 5) is displayed, a menu such as that shown in Fig. 5 is displayed, and "Please specify the type of dimension line" is displayed on the prompt line at the bottom of the display 3, for example. This requires the operator to instruct the type of dimension line to be filled. The selection of these menus and the change thereof can be performed by the operator while looking at the editing screen of the display 3
This is done by operating the cursor movement keys or the mouse to move the cursor bar on the menu.

First, in the case of serial entry, in the menu of FIG. 5, the toggle switch for instructing parallel entry / serial entry of dimension lines, the "date (meaning parallel)" toggle is off (referred to as "date"). Check that "□" is displayed in front of the display), and if "□" before the display of "Date" is "■",
If the "day tom" toggle was on, turn off the "day tom" toggle so that the "□" appears before the "day tom" display. The toggle switch is alternately turned on / off by the operator operating the mouse or the like and operating the click button of the mouse with the cursor pointing to the required toggle switch.

Further, in the menu of FIG. 5, in order to enter the horizontal dimension by the vertical dimension line with the "Datem" toggle turned off, "standard"-"horizontal" (in this case, the vertical dimension line is set as the standard dimension). Is set),
The dimension line creation mode is set, and a menu as shown in FIG. 6 is displayed. In this menu, in the normal case, "automatic recognition"-"execution" has already been preferentially selected at the time of display.

In this state, as shown in FIG. 6, a message "please specify the first point" is displayed on the prompt line to request the operator to instruct the first measurement point of the dimension line. To be done. When the first measurement point is specified by operating the mouse etc., the prompt line on the screen will display "Please specify the second point" as shown in Fig. 7. An indication of the second measuring point on the dimension line is required. These first and second measurement points are basic measurement points for serial entry.

When the second measurement point is designated by operating the mouse or the like, next, as shown in FIG. 8, the prompt line on the screen displays "Please indicate the position of the dimension line". Requires the operator to indicate the position on the drawing where the dimension line should be placed. When you operate the mouse etc. to indicate the position of the dimension line, next, as shown in Fig. 9, the basic dimension line will be written on the drawing and "Prompt for the next point to measure" will be displayed on the prompt line. By this display, the operator is required to instruct an additional measurement point.

When an additional measurement point is designated by operating a mouse or the like, next, as shown in FIG. 10, an additional dimension line is written on the drawing, and the prompt line "Instructs the next point to be measured." The display "Please do" is required to instruct the operator for additional measurement points. When the mouse or the like is further operated to specify an additional measurement point, an additional dimension line is written on the drawing as shown in FIG. 11, and the prompt line “Measure next point” is displayed. The message “please instruct” is required to instruct the operator to instruct additional measurement points. To end the series entry of dimension lines, in this state, select "automatic recognition"-"stop".

When an additional dimension line is written in FIGS. 10 and 11 described above, as shown in an exaggerated manner in FIG. As shown in the drawing, for the overlapping dimension extension lines, the dimension extension lines generated earlier are valid, and the dimension extension lines generated later are ignored (not written).

Next, in the case of parallel writing, in the menu shown in FIG. 5, the "datem" toggle, which is a toggle switch for instructing parallel writing / series writing of dimension lines, is turned on,
Make sure that "■" is displayed before "Date". In the menu of FIG. 5, for example, when a horizontal dimension is entered by a vertical dimension line, selecting "Standard"-"Horizontal" (in this case, the vertical dimension line is set as the standard dimension) creates a dimension line. The mode is set, and the menu as shown in FIG. 6 is displayed. In this menu, in the normal case, "automatic recognition"-"execution" has already been preferentially selected at the time of display.

Thereafter, also in the case of the parallel writing format, substantially the same operation as in the case of the serial writing format described above is repeated except that the position of the dimension line is designated for each additional measurement point designation. In the case of parallel writing, when additional dimension lines are written, as shown exaggeratedly in FIG. 14, the dimension auxiliary line data for common measurement points are shown without duplication, and shown in FIG. As for the overlapping dimension extension line, the dimension extension line corresponding to the outermost dimension line, that is, the dimension extension line that occurs normally most recently is made effective and is overwritten by the dimension extension line that occurred earlier, so that the dimension extension line overlaps. 16 does not occur, the dimension line in the parallel entry format as shown in FIG. 16 is created.

In the case of the parallel entry format, instead of designating the position of the dimension line for each designation of the additional measurement points, the increment of the position of the dimension line so that the dimension character and the dimension line do not interfere in advance. By setting the fixed value as appropriate, and simply specifying the additional measurement points by the same operation as in the case of serial entry, the position of the dimension line of the parallel entry format is automatically obtained sequentially, and the appropriate parallel entry format is used. Dimensioning may be performed.
In this case, since the position of the dimension line is not instructed for each additional measurement point, step S11 shown in FIG. 2 is unnecessary.

By repeating the instruction of the additional measurement points in this manner, the dimension lines in the serial format or the parallel format for a large number of continuous measurement values are sequentially input without overlapping the dimension extension lines. Further, the type of the dimension line on which the present invention can be implemented is not limited to the vertical dimension line, but may be, for example, an oblique dimension line, and may be another dimension line as long as at least one of series writing and parallel writing is possible.

[0039]

As described above, according to the present invention, when a dimension is entered on drawing data, it is possible to select an entry of a dimension line which enables at least one of series and parallel entry, and to select the dimension on the drawing. Instructing the individual basic measurement points, instructing the position of the dimension line, writing the dimension data on the drawing data based on the above instruction, further instructing the additional measurement points on the drawing, and writing the data first It is determined whether or not the dimension line data of the basic measurement point and the dimension line data of the additional measurement point have overlapping dimension extension lines at the same location, and the drawing data of the basic measurement point previously written is determined. The dimension data is written in addition to the dimension line, and if the overlapping dimension extension line exists, only one of the overlapping dimension extension lines is written as data, and the dimension extension line data is multiplexed. Write on It is possible to provide a dimension line creating method and device that can automatically fill in a dimension line in a serial entry form or a parallel entry form without being concerned and can obtain a good and appropriate drawing output result regardless of the output device. ..

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a CAD system incorporating a dimension line creating apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a schematic operation of the CAD system of FIG.

FIG. 3 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

FIG. 4 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

5 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

FIG. 6 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

7 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

8 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

9 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

10 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

11 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

12 is a diagram schematically showing a drawing situation for explaining a schematic operation of the CAD system in FIG.

13 is a diagram schematically showing a drawing situation for explaining a schematic operation of the CAD system in FIG.

14 is a diagram schematically showing a drawing situation for explaining a schematic operation of the CAD system of FIG.

15 is a diagram schematically showing a drawing situation for explaining a schematic operation of the CAD system in FIG.

16 is a diagram schematically showing a drawing situation for explaining a schematic operation of the CAD system in FIG.

[Explanation of symbols]

1 ... CAD processing unit, 2 ... Input device, 3 ... Display,
4 ... Output device, 5 ... Storage device, 11 ... Display control unit, 12
... Command input section, 13 ... Measuring point instruction section, 14 ... Dimension position instruction section, 15 ... Straight / parallel detection section, 16 ... Duplication determination section,
17 ... Memory, 18 ... Writing / rewriting control section.

Claims (6)

[Claims] 1. When a dimension is to be entered on drawing data, a selection step for selecting a dimension line that allows at least one of series and parallel entry, and two measurement points on the drawing to be dimensioned. The basic measurement point designating step, the dimension position designating step for designating the position of the dimension line on which the dimension should be entered, and the measuring point designating step and the dimension position designating on the displayed and stored drawing data. A basic writing step for writing dimension data based on the instruction by the step, an additional measurement point instruction step for instructing another measurement point on the drawing to be dimensioned, and the dimension line written in the basic writing step and the above It is determined whether the dimension line data corresponding to the instruction of the additional measurement point instruction step has overlapping dimension extension lines at the same location. A determining step, and on the displayed and stored drawing data, the dimension data is additionally written to the dimension line written in the basic writing step based on the instruction by the additional measuring point instruction step, and the determining step is performed. If there is an overlapping dimension extension line determined in step 3, an additional writing step is performed so that only one of the overlapping dimension extension lines is written as data. 2. In the additional writing step, in the case of serial writing, as for the overlapping dimension extension lines, as a result, only the first dimension extension line is written as data, and other overlapping dimension extension lines are not written. The method for creating a dimension line according to claim 1, wherein the method is a step of performing the steps. 3. In the additional writing step, in the case of parallel writing, as for the overlapping dimension extension lines, as a result, only the dimension extension line corresponding to the outermost dimension line is written as data, and the other dimension overlaps. The dimension line creating method according to claim 1, wherein the step of preventing writing of the auxiliary line is performed. 4. A dimension line creating apparatus for writing dimensions on drawing data, and a command input means for inputting a command including a dimension line writing command capable of at least one of series and parallel writing; Measuring point indicating means for indicating a measuring point on the drawing to be drawn, dimension position indicating means for indicating a position of the dimension line on the drawing to be dimensioned, and the measuring line indicating means for indicating the dimension line Serial / parallel detection means for detecting that the measurement points after the third point to be entered in series are detected, and function when the series / parallel detection means detects an instruction for the measurement points after the third point. , An overlap determination means for determining whether or not the dimension line data corresponding to the measurement point instruction has overlapping dimension extension lines at the same place, and the measurement point instruction on the displayed and stored drawing data. means Further, the dimension data is written based on the instruction by the dimension position designating means, and when the overlapping determining means determines that there is an overlapping dimension auxiliary line, only one of the overlapping dimension auxiliary lines is written as data. And a writing means for controlling so that the dimension line creating apparatus. 5. The writing means, in the case of serial writing, regarding the overlapping dimension extension lines, as a result, only the first dimension extension line is written as data, and other overlapping dimension extension lines are not written. The dimension line creating apparatus according to claim 4, wherein the dimension line creating apparatus is a means for controlling the dimension line. 6. The writing means, in the case of parallel writing, as for the overlapping dimension auxiliary lines, as a result, only the dimension auxiliary lines corresponding to the outermost dimension lines are written as data, and the other overlapping dimension auxiliary lines. The dimension line creating apparatus according to claim 4, wherein the line is a means for controlling the line not to be written.