JPH1011598A - Graphic compiling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a function for moving and compiling an arbitrary vertex and a function for forming again a diagram and compiling it for correcting the form of the two-dimensional diagram constituted of dot strings without giving an instruction by means of an operator. SOLUTION: A line information input means 101 inputs information of the line diagram constituted of the dot strings and information of a line diagram for correction. A nearest information calculation means 104 calculates a distance between the vertex of the inputted line diagram and the end point of the line diagram for correction. A cross information calculation means 105 calculates cross situation information between the line diagram and the line diagram for correction. A correction mode discrimination means 106 decides the type of a compiling processing based on calculated information. A midway section correction means 107 inserts the line diagram for correction into a midway section becoming the correction object of the line diagram. An extension correction means 108 adds the line diagram for correction to one end of the line diagram and a vertex movement correction means 109 moves the position of the arbitrary vertex of the line diagram.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic editing apparatus for editing the shape of a line graphic consisting of a sequence of points.

[0002]

2. Description of the Related Art Graphic generation using a computer is a very attractive technique and is used in various fields, but modeling work for setting a shape is generally troublesome and troublesome. Even for two-dimensional graphics that are easier to operate than three-dimensional graphics, shape setting operations are still cumbersome.

For example, in the case of drawing a line figure or the like of an arbitrary shape using two-dimensional graphics, it is not easy for a general user to draw as desired, regardless of whether the person has a pictorial mind like a designer. . And
The work of drawing almost always requires the work of correction. This also applies to the case of an operation for correcting the shape of a two-dimensional line figure composed of a sequence of points.

As a general method of editing the shape of a two-dimensional line figure composed of a sequence of points, there is a method of selecting and moving vertices on the line figure one by one. As another method, Japanese Patent Application Laid-Open No. 61-286977 discloses a method of partially correcting a line figure by designating two points in a point sequence and adding a new point sequence between the two points. It has been disclosed. These methods require an operation to select the part to be corrected before moving the vertices or drawing the additional part, but this operation is more troublesome than the work feeling of drawing with paper and pencil. .
And if you can't work smoothly, it can cause a problem of interruption of thinking, which is not always a good method.
Therefore, the present inventor has invented a graphic editing apparatus for editing a shape by directly redrawing a part of the two-dimensional line graphic composed of a point sequence without performing a selecting operation and directly redrawing the shape. . This invention is disclosed in Japanese Patent Application Laid-Open No. 06-131435.
No.

[0005]

The above-described methods of moving vertices and redrawing are both important and indispensable functions for shape editing, and are preferably provided as editing functions. However, when trying to provide both functions at the same time, since the processing of both functions is different, it is necessary to specify the type of function to be used,
This also becomes a problem because it suppresses the smoothness of the work. The present invention has been made in view of the above-described circumstances, and is intended to correct the shape of a two-dimensional line figure composed of a sequence of points.
It is an object of the present invention to provide a graphic editing apparatus that can use a function of editing by moving an arbitrary vertex and a function of redrawing and editing without drawing an instruction of these types. I do.

[0006]

As shown in FIG. 2, a processing unit for performing an editing process according to the present invention includes a line for inputting information of a line figure consisting of a point sequence and information of a correction line figure consisting of a point sequence. Information input means, edit information input means for inputting information relating to graphic editing processing, graphic information storage means for storing information input from the line information input means and the edit information input means and information during editing processing, Nearest-neighbor information calculating means for calculating information about a distance between a vertex of the line graphic input by the line information input means and an end point of the correction line graphic; Intersection information calculation means for calculating information on the intersection situation; correction mode determination means for determining the type of processing to be edited based on the information calculated by the nearest information calculation means and the intersection information calculation means; An intermediate section correcting means for inserting a correction line figure in a section to be corrected, an extension correcting means for adding a correction line figure at one end of the line figure, and moving an arbitrary vertex position of the line figure And a vertex movement correcting means to be adjusted.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail.
The line information input means inputs the coordinate information of the line figure and the coordinate information of the line figure for correcting the shape of the line figure, and the figure information storage means stores the information of the figure other than the information of the figure inputted by the line information input means. The information during the editing process and the graphic information after the editing process are stored, and the nearest neighbor information calculating unit calculates information on the distance between the line graphic input from the line information input unit and the correction line graphic, The intersection information calculation means calculates information on the intersection state between the line figure and the line figure for correction, the correction mode determination means determines the type of processing to be edited, and corrects the middle section based on the determination result of the correction mode determination means. The means generates a new line figure by inserting a line figure for correction in the middle section of the line figure to be corrected, or the extension correction means corrects one end of the line figure according to the result of the determination by the correction mode determination means. Add a line figure for It generates a new line figure by,
Alternatively, the vertex movement correcting means generates a new line figure by moving the position of an arbitrary vertex of the line figure according to the result of the determination by the correction mode determining means.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 shows an example of a hardware configuration for implementing the present invention. In the figure, 1 is a computer, 2 is a central processing unit, 3 is a graphic information processing device, 4 is a main storage device, 5 is an image memory, 6 is an input device, 7 is a display memory, and 8 is a display such as a display. Device, 9 is a scanner, 10 is a printer,
11 is a bus. The central processing unit 2 is provided in the computer 1 and controls the entire processing unit and performs general calculations. The graphic information processing device 3 is located in the computer 1 and performs processing for generating / correcting / displaying a graphic. The main storage device 4 is located in the computer 1 and stores graphic coordinate information and information necessary for correction processing. The image memory 5 stores image data. The input device 6 is for inputting graphic information and giving instructions to a computer. The display memory 7 expands data to be displayed. The display device 8 outputs and displays an image including a graphic. The scanner 9 is for inputting an image. The printer 10 outputs an image. The bus 11 serves to transfer image data, graphic data, and control information.

FIG. 2 is a block diagram showing an embodiment for performing the editing process according to the present invention. A processing unit for editing the shape of a two-dimensional line figure composed of a sequence of points includes a line information input unit 101 for inputting information such as coordinates of the line figure, and an edit information input unit 102 for inputting information relating to the edit processing of the figure. A graphic information storage means 103 for storing information input from the input means and information being edited, a nearest information calculation means 104 for calculating information on the distance between line figures, Intersection information calculation means 105 for calculating information
Correction mode determining means 106 for determining a type of processing to be edited based on the information calculated by the graphic information storage means 103 and the nearest neighbor information calculating means 104; and correcting the shape of a section in the middle of the line graphic. Intermediate section correction means 10
7, extension correcting means 108 for extending one end of the line figure,
And vertex movement correcting means 109 for moving the position of an arbitrary vertex of the line figure. Line information input means 1 in FIG.
1 and the editing information input means 102 correspond to the input device 6 in the example of the hardware configuration in FIG. 1, and the graphic information storage means 103 is included in the main storage device 4 in FIG.
The means 104 to 109 for executing the correction processing in FIG.
It is included in the figure information processing apparatus 3 inside. Also, 104-1
09 is executed by the central processing unit 2 according to a program stored in the main storage unit 4.
May go.

The intersection information calculating means 10 in the block diagram of FIG.
5 is shown in FIG. The processing unit for calculating the intersection information includes an inter-line intersection determination unit 201 that calculates information on the presence or absence of an intersection between line figures, and a line intersection angle that calculates an intersection angle between line segments of a section where the line figures intersect. It comprises calculating means 202 and point-to-point distance calculating means 203 for calculating the distance between the end point on the starting point side of the correction line graphic and the intersection.

The correction mode determining means 1 shown in the block diagram of FIG.
FIG. 4 shows a block diagram of details of the block 06. The processing unit that determines the type of processing to be edited compares the nearest distance information between the line figures with an arbitrary threshold value, and calculates the distance between the end point on the starting point side of the line figure for correction and the intersection between the line figures. Threshold comparing means 301 for comparing the threshold value with an arbitrary threshold value, a number determining means 302 for determining the content of the comparison result with the threshold value of the nearest distance information, and an angle for comparing the intersection angle between the intersecting line segments with an arbitrary threshold value And threshold comparing means 303.

Vertex movement correction means 10 in the block diagram of FIG.
9 is shown in FIG. The processing unit for moving the position of an arbitrary vertex of the line graphic includes a point-to-point distance calculating unit 401 that calculates distance information for selecting a vertex to be moved or calculating a moving distance, and determines a moving direction of the vertex. It comprises a line segment direction calculating means 402 for calculating and a vertex position editing means 403 for changing the position of the vertex. The point-to-point distance calculating means 401 has the same function as the point-to-point distance calculating means 203 in FIG. 3, and either of them may be used.

FIG. 6 shows an example of a two-dimensional line figure composed of a plurality of vertices which have already been input. Circle Pi in FIG.
Is a vertex, and the subscript i represents a vertex number. As shown in FIG. 7, the data structure of the coordinate information of the line figure includes the number n of vertices and the X and Y coordinates of the n vertices. For example, data of coordinate information of a line drawing in FIG. 6 is a vertex number 6, the vertex P ₁ ~
Each X of P _6, so that the Y coordinate is stored. The line graphic in FIG. 6 is a graphic whose shape is to be corrected, and will be referred to as a line graphic to be corrected hereinafter.

In the present embodiment, as a type of correction of the shape of a line figure, a method of moving and editing an arbitrary vertex without selecting a portion to be corrected of the line figure, and a method of redrawing and editing. Let's deal with the method. Here, the former editing of vertex movement deals with a method of moving vertices such that the moving distance changes depending on the positions of the vertices on the line figure. As the movement of the vertices, it is generally necessary to move one or more vertices on the line figure by the same distance. However, in the present embodiment, in order to change the shape smoothly, Let's deal with the method.

The other method of redrawing the latter is
The method described in JP-A-06-131435 will be briefly described here. The redrawing method has a function of editing an intermediate section and a function of extending one end of a line graphic to be corrected. FIGS. 8 and 9 show the state of the processing. 8 (a) and 9 (a)
Is an example showing a state of a correction operation for correcting the shape of a line graphic to be corrected. The broken lines in the figure are line figures for correction input for correction, and the square marks Q ₁ , Q ₂ ,.
・ ・ Is the vertex of the line figure. The data structure of the coordinate information of the line graphic for correction has the same structure as the data structure of the coordinate information of the line graphic to be corrected (that is, FIG. 7). FIG.
(B) and FIG. 9 (b) are the line figures after the correction editing process. A method of editing by moving an arbitrary vertex will be described later. FIG. 10 shows a flowchart of the overall processing from input of a line graphic to be corrected to correction of the line graphic.

In step S101, a line figure is input. The input of the coordinate information of the line figure is performed by the line information input unit 101 of FIG. 2, that is, the input device 6 of FIG.
Specifically, the operator moves a coordinate input device such as a mouse or a digitizer, and samples and inputs a position in the middle of the movement on the computer side. Although a method of inputting coordinates continuously by clicking a mouse may be used as in the input operation of a polygonal figure, a method based on sampling input is used in this embodiment. For example, a line graphic as shown in FIG. 6 is input by this input operation. The data of the line graphic has the data structure of FIG.
It is stored in the graphic information storage means 103 in FIG. 2, that is, in the main storage device 4 in FIG.

In step S102, it is determined whether or not to perform a correction operation according to an instruction from the operator, and YES is performed.
If so, the flow advances to step 103, and if not to execute, all the editing processing ends. In step S103, a line figure for correcting the line figure input in step S101 is input. This input operation is performed in step S10.
Perform the same operation as the input operation performed in step 1. Step S1
At 04, a correction process is performed. Such a correction process is shown in FIG.
Each of the units 04 to 109 processes the data stored in the graphic information storage unit 103. More specifically, the data stored in the main storage device 4 of FIG. 1 is processed by the graphic information processing device 3. Step S104 will be described later with reference to the flowchart of FIG.

In step S105, step S104
Is re-displayed on the basis of the processing result of and the display state is updated. In other words, the graphic information processing device 3 draws in the display memory 7 of FIG. 1 based on the data of the line graphic stored in the main storage device 4. Then, the drawn result is C
It is displayed on the display device 8 such as an RT. Step S
At 106, it is determined whether or not to end the correction work according to an instruction from the operator. If YES to end the work, all processing is ended; if not, NO to step S1.
Returning to step 03, a new graphic for correction is input. The operator sees the result of the redisplay in step S105 and gives this instruction.

FIG. 11 shows a flowchart of the correction processing in step S104 in FIG. In step S201,
The nearest neighbor information calculating unit 104 calculates information on the distance between the line graphic to be corrected and the line graphic for correction. Here, for convenience of explanation flow, this step S20
The details of the first process will be described. FIG. 12 shows a flowchart of this processing. In step S301, the coordinate information of one end point on the starting point side of the line graphic for correction is read. Here, they are expressed as a start point and an end point, but have the same meaning as one end point on the opposite side to one end point of the line figure. In step S302, a vertex that is closest to the start point of the line graphic for correction among the vertices of the line graphic to be corrected is obtained, and the vertex is set as the nearest point on the start side, and the distance at that time is set as the nearest distance on the start side. And Here, the distance is a Euclidean distance, a 4-neighborhood distance, an 8-neighborhood distance,
An octagon distance can be used. The method of obtaining the distance is realized by a known technique described in a document (Tamura, “Introduction to Computer Image Processing”, Soken Shuppan, pp. 73-74).

In step S303, the coordinate information of one end point on the end point side of the correction line figure is read. Step S30
In step 4, the vertex closest to the end point of the line graphic for correction among the vertices of the line graphic to be corrected is obtained, and the vertex is set as the nearest point on the end point side. I do. The processing content is the same as the processing performed in step S302. Thereafter, the process returns to step S202 in FIG.

In step S202, the correction mode discriminating means 106 examines the information on the distance obtained in step S201, that is, the contents of the start-point-side nearest distance and the end-point-side nearest distance, and determines the type of correction. To be stored. In the determination here, the types of the correction mode information of the line graphic include an intermediate section correction mode for correcting a part in the middle of the correction target line graphic, and an extension correction mode for extending one end side of the correction target line graphic. There is. This correction mode determination method is determined based on whether or not both end points of the line graphic for correction are near the line graphic to be corrected. The specific processing of the determination is as follows: the distance threshold value comparing means 301 compares the nearest distance on the starting point side and the nearest distance on the ending point with a predetermined arbitrary threshold value; Make a decision by examining. That is, if the number of endpoints equal to or less than the threshold value is 2, it is a midway section correction, and the midway section correction mode is set in the correction mode information.
If the number of endpoints equal to or less than the threshold value is 1 and the nearest point is the endpoint of the line graphic to be corrected, it is an extension correction,
Set the extended correction mode to the correction mode information. When the number of endpoints equal to or less than the threshold value is 0, that is, when both endpoints of the line graphic for correction are not near the line graphic to be corrected, indicating that no correction processing is performed, Is set in the correction mode information.

In step S203, step S202
The content of the correction mode information obtained by the above is read out. In step S204, it is determined whether or not the read correction mode information is in the middle section correction mode. If YES in the middle section correction mode, the process proceeds to step S205. If NO in the middle section correction mode, Proceeds to step S206. In step S205, the shape of the middle part of the line graphic to be corrected is corrected by the middle section correcting means 107. Specifically, a process of replacing a part of the line graphic to be corrected with a line graphic for correction is performed.

In step S206, it is determined whether or not the correction mode information indicates an extended correction, and YES is determined as an extended correction.
In step S207, the process proceeds to step S207,
In the case of O, the process proceeds to step S208. Step S20
In step 7, the extension correcting means 108 extends one end of the line graphic to be corrected. Specifically, a process of adding a line graphic for correction to one end of the line graphic to be corrected is performed.

In step S208, the intersection information calculating means 105 and the correction mode determining means 106 determine information on the intersecting relationship between the line graphic to be corrected and the line graphic for correction, and examine the contents of the information. To determine whether or not to perform vertex movement correction, and stores it as correction mode information. This step S208 will be described later using the flowchart of FIG. In step S209, the contents of the correction mode information obtained in step S208 are read.

In step S210, it is determined whether or not the read correction mode information is the vertex movement correction mode. If YES in the vertex movement correction mode, the flow advances to step S211 to be not in the vertex movement correction mode. If NO, the process ends. In step S211, the vertex movement correcting unit 109 performs a process of moving an arbitrary vertex of the line graphic to be corrected. This step S211 will be described later using the flowchart of FIG.
FIG. 13 shows a flowchart of the process for calculating the intersection relationship information in step S208 in FIG. FIG. 15 illustrates a state of this processing. FIG. 15A shows a line graphic to be corrected added to a line graphic to be corrected. A broken line is a line graphic for correction, and the vertices of the line graphic are Q _{1 to} Q _4.
It is. In this example, an attempt is made to correct the line graphic to be corrected so that the right-hand portion is extended to the right. As an operation, the user inputs a line figure for correction along the direction in which the part to be corrected is pinched and stretched.

In step S401, the line intersection determining means 201 obtains information on an intersection between a line graphic to be corrected and a line graphic for correction. Specifically, whether both line figures intersect, and when they intersect, the position of the intersection is determined. FIG. 15 (b) is a diagram showing a state of the intersection. In this example, the intersection is made, and the triangle C is the intersection. In step S402, it is determined whether or not there is an intersection based on the information obtained in step S401. If there is, the process proceeds to step S402, and if not, the process proceeds to step S412. When proceeding to step S412, the correction process is not performed.

[0027] In step S403, the inter-point distance calculating unit 203 calculates the distance between the intersection C between the start point Q _1, a line drawing of a line drawing of correcting line. This distance is the Euclidean distance. FIG. 15C is a diagram showing a state of the distance and an angle to be obtained later, where L _Q1C is the distance. In step S404, the distance threshold comparing unit 301
The distance obtained in step S403 is compared with a distance that is an arbitrary threshold. This threshold is set in advance. In step S405, it is determined based on the comparison in step S404 whether or not the value is equal to or less than the threshold value. If the value is equal to or less than the threshold value, the process proceeds to step S406.
In the case of, the process proceeds to step S412. Here, the case comprising NO, and the case the starting point to Q ₁ line figure correcting line is too far from the correction target line figure means to cancel the correction process.

In step S406, the direction of a line segment in a section including the intersection C on the line graphic to be corrected is determined. In this example, this section is P ₄ P ₅ . Its orientation is the direction from P ₄ to P _5. In step S407, determine an orientation of a line connecting from the starting point to Q ₁ line figure for modifications to the intersection C. In step S408, the line intersection angle calculation unit 202 obtains an angle at which the direction of the line segment obtained in step S406 intersects with the direction of the line segment obtained in step S407. Θ in FIG. 15C is the angle. Since the angle is the angle at which the two line segments intersect, there are two angles, an angle of 90 degrees or more and an angle of 90 degrees or less.
The target angle is 0 degree or less. In step S409,
The angle threshold comparing unit 303 compares the intersection angle obtained in S408 with an angle that is set as an arbitrary threshold. This threshold is
Set in advance.

In step S410, step S409
It is determined based on the comparison in step S4 whether or not the value is equal to or smaller than the threshold value. If the value is equal to or smaller than the threshold value, the process proceeds to step S411. If the value is not equal to or smaller than the threshold value, the process proceeds to step S412.
The reason why the processing is performed only in the case of YES is that the processing of extending or pushing in the vertical direction with respect to the line graphic to be corrected is targeted this time. Step S4
At 11, the vertex movement correction mode is set in the correction mode information. In step S412, the non-correction mode is set in the correction mode information. Thereafter, step S2 in FIG.
Return to 09.

FIG. 14 shows a flowchart of the processing for correcting the vertex movement in step S211 in FIG. FIG. 16 illustrates a state of this processing. The vertex movement correction processing performed here describes an example, and is not necessarily limited to this. At step S501, the line segment direction calculation unit 402 obtains a vector of the end point Q _m of line figure for modification from the intersection C between the line segments, and moving the reference vector V _CQM. FIG. 16A is a diagram showing the state of the vector. Here, the end point of the correction for line graphics are Q _4, moving reference vector is V _CQ4. Step S50
In Step 2, a length twice as long as the length of the movement reference vector obtained in Step S501 is obtained, and the length is set as a threshold L _jmv used for determining the movement target range of the vertex. It is not necessary to limit the threshold value to this.

Next, selection of vertices of the line graphic to be corrected is started. In step S503, one vertex of the line graphic to be corrected is selected. This means that the target vertices are sequentially selected from the start point to the end point of the line graphic to be corrected. In step S504, the point distance calculating unit 401
As a result, the distance between one vertex _Pn of the line graphic to be corrected selected in step S503 and the intersection C of the line segment is obtained, and is set as the selected point distance L _PnC . In step S505,
The selected point distance obtained in step S504 is calculated in step S50.
Compare with the threshold value L _jmv obtained in step 2. In step S506, as a result of the comparison in step S505, if the value is equal to or smaller than the threshold value, the process proceeds to step S507. If the value is not smaller than the threshold value, the process proceeds to step S509.

In step S507, a movement vector for correcting one selected vertex Pn of the line graphic to be corrected is obtained. This moving distance V _rep is shown in equation (1). V _rep = V _CQm × (1-L _PnC / L _jmv ) (1) In step S508, the moving distance V _rep obtained in step S507 is corrected by adding the selected vertex Pn to the selected one vertex Pn by the vertex position editing means 403. Find the later coordinate position. In step S509, it is determined whether or not all vertices of the line graphic to be corrected have been selected, and if YES has been selected for all the vertices, the process ends. In this case, the process returns to step S503.
FIG. 16B is an example of a line figure after performing the vertex movement correction. Thereafter, the process returns to step S105 in FIG.

By the way, in the above description of this embodiment,
Although the determination of the correction mode is performed in the middle section correction / extension correction edit first, and then it is determined whether it is the vertex movement correction,
It is also possible to first determine whether or not the correction is a vertex movement correction, and then determine the midway section correction / extension correction editing. That is, FIG.
It is also possible to perform the processing of Steps S208 to S211 before Step S201.

[0034]

As described above, according to the present invention, in order to correct the shape of a line graphic composed of a sequence of points, a function of moving the vertices and editing and a function of redrawing and editing the drawing. Can be used without the operator discriminating between the types, and can be performed without selecting a portion of the line graphic to be corrected. Thereby, there is an effect that the shape of the line figure can be easily corrected.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a hardware configuration for implementing the present invention.

FIG. 2 is a block diagram of a processing unit that performs an editing process.

FIG. 3 is a block diagram of a processing unit that calculates intersection information.

FIG. 4 is a block diagram of a processing unit that determines a correction mode.

FIG. 5 is a block diagram of a processing unit that performs vertex movement correction.

FIG. 6 is a diagram illustrating an example of a line graphic.

FIG. 7 is a diagram illustrating coordinate information of a line figure.

FIG. 8 is a diagram showing a state in which the shape of a middle section is edited.

FIG. 9 is a view showing a state of extension.

FIG. 10 is a flowchart of an overall process from input of a line figure to correction.

FIG. 11 is a flowchart of a correction process.

FIG. 12 is a flowchart of a process for calculating nearest neighbor information.

FIG. 13 is a flowchart of a process for calculating intersection relationship information.

FIG. 14 is a flowchart of a vertex movement correction process.

FIG. 15 is a diagram illustrating a state of processing for calculating intersection relationship information.

FIG. 16 is a diagram illustrating a state of a vertex movement correction process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Computer 2 Central processing unit 3 Graphic information processing device 4 Main storage device 5 Image memory 6 Input device 7 Display memory 8 Display device 9 Scanner 10 Printer 11 Bus 101 Line information input means 102 Edit information input means 103 Graphic information storage means 104 Nearest neighbor information calculation means 105 Intersection information calculation means 106 Correction mode determination means 107 Midway section correction means 108 Extension correction means 109 Vertex movement correction means 201 Line crossing determination means 202 Line crossing angle calculation means 203 Point distance calculation means 301 Distance Threshold comparing means 302 Number determining means 303 Angle threshold comparing means 401 Point-to-point distance calculating means 402 Line segment direction calculating means 403 Vertex position editing means

Claims (2)

[Claims] 1. A coordinate information of a vertex of a first line graphic and a second
Graphic information storage means for storing coordinate information of the vertices of the line graphic, and nearest neighbor information calculation for calculating a distance between the first line graphic and the second line graphic stored in the graphic information storage means Means, midway section correction means for performing a correction for replacing a halfway section of the first line figure stored in the figure information storage means with a second line figure, and a second section stored in the figure information storage means. Extension correction means for correcting the addition of a second line graphic to one end of one line graphic, comparison means for comparing a distance calculated by the nearest neighbor information calculation means with a threshold value, and comparison by the comparison means A graphic editing apparatus, comprising: control means for correcting a first line graphic by the intermediate section correcting means or the extension correcting means according to a result. 2. A graphic information storage means for storing coordinate information of vertices of a first line graphic and coordinate information of vertices of a second line graphic, and a first line graphic stored in the graphic information storage means. Nearest-neighbor information calculating means for calculating a distance between the first line figure and the second line figure, and calculating an angle at which the first line figure and the second line figure stored in the figure information storage means intersect with each other A line intersection angle calculating means, a halfway section correcting means for performing a correction for replacing a halfway section of the first line graphic stored in the graphic information storing means with a second line graphic, Extension correcting means for performing correction for adding a second line figure to one end of the stored first line figure, and a vertex of the first line figure stored in the figure information storing means as a second line Vertex position editing to correct movement based on the length and orientation of the figure A step, first comparing means for comparing a distance calculated by the nearest neighbor information calculating means with a threshold, second comparing means for comparing a threshold calculated by the line intersection angle calculating means with a threshold, and The result compared by the first comparing means and the second
Characterized in that it comprises control means for correcting the first line graphic by the intermediate section correcting means, the extension correcting means or the vertex position editing means in accordance with the result of comparison by the comparing means. apparatus.