JP2723058B2 - Line-symmetric figure input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a line symmetric figure input apparatus, and more particularly to a line symmetric figure input apparatus having a function of automatically shaping an inputted figure into a line symmetric figure.

[0002]

2. Description of the Related Art Conventionally, this kind of line-symmetric figure input device has
For example, software running on a personal computer, "Hanako Ver.2" (Just System Co., Ltd.)
As described above, it is applied as a device for drawing and editing a line figure.

[0003] Hanako Ver. 2 manual "Hanako Ve
r. 2 Introduction JustSystems Corporation 1989.1
According to “0.2 Second Edition, First Printing”, when menus such as “Draw” and “Edit” are selected using an input device such as a mouse, command options corresponding to each are displayed. For example, when "drawing" and "rectangle" are selected, a rectangle can be input on the screen.

In order to input a line-symmetrical figure with this conventional line-symmetrical figure input device, a "grid"("Hanako Ver. 2 Explanation Edition" Just System 199) is displayed on the screen.
0.5.14 2nd edition 4th printing pp. 65 ”), and referring to the displayed grid, the user inputs the figure while confirming the position of the coordinate point so as to be axisymmetric by himself. Alternatively, enter only one side of the axis of symmetry and enter the “mirror” command (“Hanako Ver.
Justsystem 1990.5.14 2nd edition 4th printing pp. 177 "), the figure is symmetrically copied to the opposite side of the axis of symmetry. "Mirror" using FIG.
A method of inputting a line-symmetrical figure using a command will be described. First, one side of the graphic to be input is input (FIG. 20).
(A)). Next, the "mirror" command is selected, and the input figure is specified. Next, a mirror mode of "leave the original figure" is selected by a subcommand (b). Further, the position of the axis of symmetry is determined and determined so that the input graphic and the generated graphic are line-symmetrical (c) and (d).

[0005]

In this conventional line-symmetrical graphic input device, first, when a grid is used, the user counts the grid cells so that each vertex is symmetrical. You have to enter the shape. Therefore, attention is required and the operation is troublesome. Also, in the case of inputting a symmetrical figure including a heart-shaped curve, it is almost impossible to input the curved part so as to be symmetrical. On the other hand, in the input method using the “mirror” command, since only one side of the figure is input, it is difficult to grasp the entire image of the figure, and such an operation itself is not intuitive.

As described above, it is difficult to easily input a graphic intended by a user using either method.

An object of the present invention is to provide a line-symmetric graphic input device with improved operability.

It is another object of the present invention to provide a line symmetric graphic input apparatus which can obtain a user interface for symmetric graphic input with a reduced burden on the user.

Another object of the present invention is to provide a line target graphic input device which allows a user to easily input a graphic intended by the user.

[0010]

The first device of the present invention comprises:
Graphic input means for inputting graphic data including a feature amount; symmetry determining means for determining whether or not line symmetry can be shaped based on symmetry axis data and the characteristic amount input from the graphic input means; Symmetry processing means for shaping the target graphic determined to be symmetrically shapeable by the means to be line-symmetric.

[0011] A second device of the present invention is an output device for displaying at least one of a graphic input by the graphic input means and a graphic shaped by the symmetry processing means in the first apparatus. It has.

A third apparatus of the present invention, in the first apparatus or the second apparatus, further comprises shaping reference element designating means for designating an element serving as a reference for shaping and an element to be referenced, and The conversion processing means shapes the target graphic line-symmetrically in accordance with the instruction content from the shaping reference element instruction means.

[0013] A fourth device of the present invention comprises the first device,
The second device or the third device, further comprising: target graphic designating means for determining which graphic is a shaping target in response to the instruction of the shaping target graphic, wherein the symmetry determining means comprises: With respect to the shaping target graphic determined by the graphic designating means, it is characterized in that it is determined whether or not line symmetry shaping is possible based on the symmetry axis data and the feature amount.

The fifth device of the present invention is the first device,
In the second device or the third device, a symmetric axis input unit that inputs the symmetric axis data to be supplied to the symmetry determination unit is provided.

In a sixth aspect of the present invention, in the fifth aspect, the graphic input from the input means located at the position of the axis of symmetry input by the target axis input means is a target graphic to be subjected to line-symmetric shaping. It is provided with a target graphic extracting means for determination, wherein the symmetry determining means determines whether line symmetry shaping is possible based on the determination result by the target graphic extracting means in addition to the symmetry axis data and the feature amount. And

According to a seventh aspect of the present invention, there is provided the above-mentioned first apparatus,
In the second device or the third device, a combination of a vertex and a midpoint of a side that may be a symmetry axis is assumed based on information of a vertex or a side of the graphic input from the graphic input unit, A symmetry axis generating means for generating a set of symmetry axis candidates from among the symmetry determination means, wherein the symmetry determination means determines a feature amount input from the graphic input means and a symmetry line candidate generated by the symmetry axis generation means. It is characterized in that it is determined whether or not line-shaping can be performed based on the information.

An eighth apparatus according to the present invention, in the seventh apparatus, further comprises target graphic designating means for determining which graphic is a shaping target in response to the instruction of the graphic to be shaped, The determining means determines whether or not line shaping can be performed on the shaping target graphic determined by the target graphic designating means based on the feature amount and the information of the symmetric axis candidate.

A ninth device according to the present invention comprises the first device,
In the second device or the third device, the symmetry determining means obtains an intersection between the symmetry axis and the shaping target graphic, and the symmetry axis passes through any midpoint of any vertex or side of the shaping-processed graphic. A second step of determining a set of vertices for determining symmetry, and determining a distance between the midpoint of the two vertices of the set determined in the second step and the axis of symmetry. A third step, a fourth step of obtaining an angle between a line segment connecting the two vertices and the axis of symmetry, and executing the third step and the fourth step on all vertices and sets. A fifth step of calculating the average of the distance between the point and the axis of symmetry and the average of the angular difference between the point and the axis of symmetry; and, if the average value obtained in the fifth step is equal to or less than a predetermined value, perform line symmetric shaping. And a sixth step of judging possible.

[0019]

Next, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a first embodiment of the present invention includes an input device 1 such as a keyboard, a mouse, and a pen, a data processing device 2 that operates under program control, and a storage device that stores data and information. 3 and output means 4 such as a display device. The input device 1 includes a graphic input means 11 for inputting graphic data and a symmetric axis input means 12 for inputting symmetric axis data. The data processing device 2 includes a symmetry determination unit 21 and a symmetry processing unit 22. The storage device 3 includes a graphic data storage unit 31 that stores the graphic data input from the graphic input unit 11,
A symmetric axis storage unit 32 for storing symmetric axis data input from the symmetric axis input unit 12.

Next, the operation of the first embodiment of the present invention will be described in detail with reference to FIGS.

Referring to FIGS. 1 to 3, figure input means 1
1 is stored in the graphic data storage means 31. As with the conventional line-symmetrical graphic input device, there are methods for inputting graphic data, such as a method of sequentially instructing vertices with a mouse and a method of drawing a locus of a graphic with a pen. The graphic data storage means 31 stores coordinates of vertices, angles and side lengths, types of straight lines / curves, and the like (hereinafter, referred to as feature amounts). Further, the input figure is displayed on the output means 4 (see step A1 in FIG. 2 and FIG. 3A). Next, the user inputs the symmetry axis data by the symmetry axis input means 12. The input symmetry axis data is stored in the symmetry axis storage means 32. The axis of symmetry is output to the output means 4 (see step A2 and FIG. 3B). In response to the input of the symmetry axis data, the symmetry determination means 21 stores the characteristic quantities such as the coordinates of the vertices of the shaping target graphic stored in the graphic data storage means 31 and the symmetry determination means 32 It is determined from the existing symmetry axis data whether line symmetry can be shaped (step A3).

Next, an example of a specific processing procedure of the symmetry determining means 21 will be described in detail with reference to FIGS.

Referring to FIGS. 4 and 5, first, an intersection between the symmetry axis and the shaping target figure is determined, and it is determined which vertex or side midpoint of the shaped figure the shaping axis passes through. (Step G1). Next, a set of vertices for determining symmetry is determined. As shown in FIG. 5, vertices on both sides of the symmetry axis are traced from one vertex (middle point) passing through the symmetry axis toward the other vertex (middle point). At this time, the vertices traced at the n-th time (n = 1, 2,...) Are set as one set (step G2). In FIG. 5, the vertices a and a 'and b and b' form a pair. Next, the distance between the middle point of the two vertices and the axis of symmetry is determined (step G4). The angle formed by the line connecting the two vertices and the axis of symmetry is calculated, and the difference between 90 ° and the angle (absolute) is determined. Is calculated (step G5). The processing of step G4 and step G5 is performed on all sets of vertices (step G
3) The average of the distance between the midpoint and the axis of symmetry and the average of the angle difference between the axis and the axis of symmetry are determined. If the average value is equal to or less than a certain threshold value, this figure is determined to be symmetrical (step G6).

Referring again to FIGS. 1 to 3, the target graphic determined to be symmetrically shapeable by the symmetry determining means 21 is subjected to graphic processing by the symmetry processing means 22 so that the target graphic is line-symmetric. The feature amounts such as the coordinates of the vertices stored in the storage unit 31 are changed and stored in the graphic data storage unit 31. The shaped figure stored in the storage means 31 is displayed on the output means 4 (step A4,
FIG. 3 (c)).

According to the first embodiment of the present invention, a line-symmetrical figure can be input by simple input processing.

Next, a second embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 6, the features of the second embodiment of the present invention are the same as those of the first embodiment shown in FIG.
It has an instruction device 5 for instructing the data processing device 2 to issue a processing instruction from the user, which is realized by a keyboard, a mouse, buttons on a screen, and the like. In addition, the pointing device 5
The apparatus includes a line symmetrical shaping process instructing unit 51 for instructing to perform a line symmetrical shaping process, and a target graphic instructing unit 52 for instructing a figure to be subjected to line symmetrical shaping.

Referring to FIG. 6, according to a second embodiment of the present invention, a keyboard, a mouse, a pen and the like having a graphic input means 11 for inputting graphic data and a symmetry axis input means 12 for inputting symmetry axis data are provided. In response to the instruction from the target graphic designating means 52 and the symmetric axis data from the input means 2, the apparatus 1 and the feature quantities such as the vertices of the shaped symmetric graphic from the graphic data storage means 31 and Symmetry determining means 21 for determining whether or not line symmetry can be shaped based on symmetry axis data, and symmetry determining means 21
A data processing device 2 having a symmetrization processing means 22 for shaping the target graphic determined to be symmetrically shapeable to be line-symmetrical by changing a feature amount such as the coordinates of a vertex stored in the storage means 31; A graphic data storage means 31 for storing the graphic data input from 11 and the data shaped by the symmetry processing means 22, and a symmetry axis input means 12
Storage device 3 having symmetry axis storage means 32 for storing the symmetry axis data inputted from, output means 4 such as a display device, and line symmetry shaping processing instructing means 51 for instructing line symmetry shaping processing, and the line symmetry And a pointing device 5 having target graphic designating means 52 for designating a line-symmetric shaping target graphic in response to an instruction from the shaping processing instructing means 51.

Next, the operation of the second embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 6 to 8, figure input means 1
1 is stored in the graphic data storage means 31. The graphic data storage means 31 stores feature quantities such as vertex coordinates. Also, the figure input to the output means 4 is displayed (step B1, FIG. 7A). The user operates the line symmetrical shaping processing instructing means 51.
And instructs to perform line-symmetric shaping (step B2, FIG. 8B). The target graphic designating means 52
Ask the user to indicate which shape to shape. The user designates a graphic to be shaped, for example, by specifying a graphic displayed on the screen. The target graphic designating means 52 refers to the graphic data storage means 31 and determines which graphic is to be shaped (step B3, FIG. 8C). Next, the user inputs the symmetry axis data by the symmetry axis input means 12. The input symmetry axis data is stored in the symmetry axis storage means 32. The symmetry axis is output to the output means 4 (see step A4 and FIG. 8D).

In response to the input of the symmetry axis data, the symmetry determination means 21 stores the characteristic quantities such as the coordinates of the vertices of the graphic to be shaped stored in the graphic data storage means 31 and the characteristic quantities such as the coordinates of the vertices of the graphic to be shaped. It is determined whether or not line symmetry can be shaped from the symmetric axis data (step A5).

The specific processing procedure of the symmetry determining means 21 is the same as the operation described with reference to FIGS. 4 and 5 in the first embodiment, and a description thereof will be omitted.

The target graphic determined to be symmetrically shapeable by the symmetry determining means 21 has features such as the coordinates of the vertices stored in the graphic data storage means 31 so that the target graphic is line-symmetric by the symmetry processing means 22. The amount is changed and stored in the graphic data storage means 31. The shaped figure stored in the storage means 31 is displayed on the output means 4 (step A6, see FIG. 8E). This second embodiment is:
It becomes possible to select from a plurality of figures to make a line symmetric figure.

Next, a third embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 9, the feature of the third embodiment of the present invention is that the data processing device 6 is different from the data processing device 2 of the second embodiment shown in FIG. It has an extraction means 23. The pointing device 7
However, one of the features is that it is constituted by the line symmetrical shaping processing instructing means 51.

The third embodiment of the present invention does not include the target graphic designating means 52 in the second embodiment, but has the line symmetrical shaping processing instructing means 51 for instructing the line symmetrical shaping processing. And a symmetric axis input unit 12 for inputting symmetric axis data in accordance with an instruction from the line symmetric shaping processing instruction unit 51.
In response to an input device 1 such as a keyboard, a mouse and a pen having graphic input means 11 for inputting graphic data and a symmetry axis input from the symmetry axis input means 12, the contents of the graphic data storage means 31 are referred to. Object extracting means 23 for judging the figure located at the input position of the symmetry axis as the object figure of the line symmetry shaping, the judgment result from the object figure extracting means 23, the vertex of the shaping symmetric figure from the figure data storage means 31 Symmetry determining means 21 for determining whether or not it is possible to perform line symmetry shaping on the basis of feature amounts such as the symmetry axis data from the symmetry axis storage means 32, and the symmetry determining means 21
Storing the target graphic determined to be symmetrically shapeable by
1, a data processing device 2 having a symmetry processing unit 22 for shaping the line symmetrically by changing features such as coordinates of vertices, and a graphic data storage unit 31 for storing graphic data input from the graphic input unit 11. And a storage device 3 having a symmetry axis storage means 32 for storing the symmetry axis data given from the target graphic extraction means 23, and an output device 4 such as a display device.

Next, the operation of the third embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 9 to 11, graphic data input by graphic input means 11 is stored in graphic data storage means 31. The graphic data storage means 31 stores feature quantities such as vertex coordinates. Output means 4
Is displayed (step B in FIG. 10).
1, see FIG. 11 (a)). The user activates the line symmetry shaping process instructing means 51 to instruct the line symmetry shaping process (see step B2 in FIG. 10 and FIG. 11B).

A user inputs a symmetry axis from the symmetry axis input means 12. With this input, the target graphic extracting means 23
With reference to the inside of the graphic data storage means 31, the graphic at the place where the axis of symmetry is input is determined as the graphic to be subjected to line symmetry shaping. Symmetry axis storage means 3 stores the simultaneously inputted symmetry axis data.
2 (step C1, see FIG. 11C).

In response to the input of the symmetry axis data, the symmetry determination means 21 stores the characteristic quantities such as the coordinates of the vertices of the graphic to be shaped stored in the graphic data storage means 31 and the characteristic quantities such as the coordinates of the vertices. It is determined from the symmetric axis data whether or not it is possible to perform line symmetry shaping (step A5).

The specific processing procedure of the symmetry determining means 21 is the same as the operation described with reference to FIGS. 4 and 5 in the first embodiment, and a description thereof will be omitted.

The target graphic determined to be symmetrically shapeable by the symmetry determining means 21 has features such as the coordinates of vertices stored in the graphic data storage means 31 so that the target graphic is line-symmetric by the symmetry processing means 22. The amount is changed and stored in the graphic data storage means 31. The shaped figure stored in the storage unit 31 is displayed on the output unit 4 (step A6, see FIG. 8D).

According to the third embodiment, since a figure to be simultaneously subjected to line-symmetric shaping can be designated by inputting the axis of symmetry, the user's input work can be further reduced.

Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 12, one of the features of the fourth embodiment of the present invention is that the input device 8 is connected to the first device shown in FIG.
It is different from the embodiment of FIG.

Another feature of the fourth embodiment of the present invention is that a symmetric axis generating means 24 is added to the configuration of the data processing device 2 in the first embodiment.

The fourth embodiment of the present invention has the graphic input means 11 for inputting graphic data, and does not have the symmetric axis input means 12 shown in the first to third embodiments.
From the information on the vertices and sides of the figure stored in the figure data storage means 31, a combination of the vertices and the midpoint of the side that may become the axis of symmetry is assumed, and one set is selected from among them. Symmetry axis generation means 24, which is generated as a candidate, and stores the generated information of the symmetry axis candidate in the symmetry axis storage means 32, and the characteristic amount of the shaping target graphic stored in the graphic data storage means 31 and the symmetry axis storage means Symmetry judging means 21 for judging whether it is possible to perform line symmetry shaping based on the information of the symmetry axis candidates stored in 32, and the target graphic determined to be symmetrically shapable by the symmetry judging means 21 is regarded as line symmetric. The data processing device 9 having the symmetry processing means 22 for changing the feature amount such as the coordinates of the vertices stored in the graphic data storage means 31 for storing the graphic data storage means 31 and the graphic input means 11 Graphic data storage means 31 for storing graphic data including characteristic amounts such as coordinates of vertices that have been input, and graphic data obtained by deforming and shaping the characteristic amounts, and the symmetry axis generated by the symmetry axis generation means 24. A storage device 3 having a symmetric axis storage means 32 for storing candidate information;
Output means 4 for displaying input figures and shaped figures
And

Next, the operation of the fourth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 12 to 14, the figure input by the figure input means 11 is stored in the figure data storage means 31. The graphic data storage means 31 stores feature quantities such as vertex coordinates. Further, the figure input to the output means 4 is displayed (Step D1, FIG. 13A). The symmetric axis generation unit 24 calculates the vertices and sides of the graphic stored in the graphic data storage 31
Assuming combinations of vertices and midpoints of sides that may become symmetry axes, a pair is generated as a symmetry axis candidate from among them. In addition, information on the generated symmetry axis candidates is stored in the symmetry axis storage unit 32. If a symmetry axis candidate cannot be generated, the input graphic is not a line-symmetric graphic (steps D2 and D3). Symmetry determining means 21
Determines from the feature amount of the shaping target graphic stored in the graphic data storage means 31 and the information on the candidate of the symmetry axis stored in the symmetry axis storage means 32 whether or not it is possible to perform line symmetry shaping (step D4). ). If it is determined that line symmetry shaping is impossible, the process returns to step D2, and another candidate for the axis of symmetry is generated. The target graphic determined to be symmetrically shapeable by the symmetry determining means 21 is a feature quantity such as the coordinates of a vertex stored in the graphic data storage means 31 such that the symmetry processing means 22 makes the target graphic line-symmetric. Is changed and stored in the graphic data storage means 31. The shaped figure is displayed on the output means 4 (step D6, FIG. 1).
4 (b)).

According to the fourth embodiment of the present invention, since the line-symmetric shaping is performed without the user inputting the axis of symmetry, the burden on the user is further reduced.

Next, a fifth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 15, a feature of the fifth embodiment of the present invention is that, in addition to the configuration of the fourth embodiment shown in FIG. The present invention has a pointing device 5 for instructing. The instruction device 5 includes a line symmetry shaping process instructing unit 51 for instructing to perform the line symmetry shaping process, and a target graphic instructing unit 52 for instructing a graphic to be subjected to the line symmetry shaping.

In the fifth embodiment of the present invention, a line symmetrical shaping processing instructing means 51 for instructing a line symmetrical shaping processing, and a figure to be subjected to the line symmetrical shaping in response to the instruction of the line symmetrical shaping processing instructing means 51. The pointing device 5 having the target graphic designating means 52 for performing the operation, and the input device having the graphic input means 11 for inputting graphic data and not having the symmetric axis input means 12 shown in the first to third embodiments. 8 and graphic data storage means 3
From the information of the vertices and sides of the figure stored in 1, a combination of the vertices and the midpoint of the side that may become the symmetry axis is assumed, and a set of them is generated as a candidate for the symmetry axis. Symmetry axis generation means 24 for storing the information of the candidate for the symmetry axis in the symmetry axis storage means 32, the feature amount of the shaping target graphic stored in the graphic data storage means 31 and the symmetry stored in the symmetry axis storage means 32. Symmetry judging means 21 for judging whether it is possible to perform line symmetry shaping from information on axis candidates, and graphic data storage means 31 for making the target graphic determined to be symmetry shapable by the symmetry judging means 21 line-symmetric.
A data processing device 9 having a symmetry processing unit 22 for changing a feature amount such as a vertex coordinate stored in the graphic data storage unit 31 and a feature such as a vertex coordinate input from the graphic input unit 11 Graphic data storage means 31 for storing graphic data including quantities and graphic data obtained by deforming and shaping the characteristic quantities, and symmetric axis storage means 32 for storing information on symmetric axis candidates generated by the symmetric axis generation means 24
And an output unit 4 for displaying the input graphic and the shaped graphic.

Next, the operation of the fifth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 15 and 16, the figure input by the figure input means 11 is stored in the figure data storage means 31. In the figure data storage means 31,
A feature amount such as a vertex coordinate is stored. Further, the figure input to the output means 4 is displayed (step E in FIG. 16).
1). The user activates the line symmetrical shaping process instructing means 51 to instruct the line symmetrical shaping process (step E2). The target graphic designating means 52 requests the user to specify which graphic is to be shaped. The user designates a shaping target graphic by clicking the graphic displayed on the screen with a mouse or the like. Target figure designating means 52
Refers to the graphic data storage means 31 to determine which graphic is to be shaped (step E3).

The symmetry axis generation means 24 assumes a combination of vertices and midpoints of the sides which may become the symmetry axis from the information on the vertices and sides of the graphic stored in the graphic data storage means 31. Is generated as a candidate for the symmetry axis.
In addition, the information of the generated symmetry axis candidates is stored in the symmetry axis storage unit 32. If no symmetric axis candidate can be generated, the input graphic is not a line symmetric graphic (steps D2 and D3). The symmetry determining means 21 determines whether or not line-symmetric shaping is possible based on the feature amount of the shaping target graphic stored in the graphic data storage means 31 and the information of the symmetry axis candidate stored in the symmetry axis storage means 32. (Step D4). If it is determined that line symmetry shaping is impossible, the process returns to step D2 to generate another symmetry axis candidate.

The target graphic determined to be symmetrically shapeable by the symmetry determining means 21 is processed by the graphic data storage means 3 so that the symmetry processing means 22 makes the target graphic line-symmetric.
The feature amounts such as the coordinates of the vertices stored in 1 are changed,
It is stored in the graphic data storage means 31. The shaped figure is displayed on the output means 4 (step D6).

According to the fifth embodiment of the present invention, it is possible to perform line symmetry shaping on a figure selected from a plurality of figures without inputting a symmetry axis by a user.

Next, a sixth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 17, a feature of the sixth embodiment of the present invention is that, in addition to the configuration of the first embodiment shown in FIG. The present invention has a pointing device 10 for instructing. The instruction device 10 includes a shaping reference element instructing unit 53 that instructs which feature value to refer during the symmetrization process.

In the sixth embodiment of the present invention, the input device 1 such as a keyboard, a mouse and a pen having graphic input means 11 for inputting graphic data and input means 12 for inputting symmetrical axis data is symmetrical. An indicating device 10 having shaping reference element indicating means 53 for indicating which feature amount to refer to during processing; vertices of a shaped symmetrical figure from the figure data storage means 31 in response to symmetric axis data from the input means 12; Symmetry determining means 21 for determining whether or not line symmetry can be shaped based on the characteristic amount of the object and the symmetry axis data from the symmetry axis storage means 32. Is referred to a feature amount such as the coordinates of a vertex in the storage unit 31 designated by the designating unit 53, and the symmetry processing unit 22 is configured to change the feature amount and shape the line to be symmetrical. A data processing device 2, graphical input device 11 are input from the graphic data and the symmetric processing means 2
Figure data storage means 3 for storing the data shaped in 2
1 and a storage device 3 having a symmetry axis storage means 32 for storing symmetry axis data inputted from the symmetry axis input means 12
And output means 4 for displaying the input graphic and the shaped graphic.

Next, the operation of the sixth embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 17 to 20, graphic data input from graphic input means 11 is stored in graphic data storage means 31. As with the conventional line-symmetrical graphic input device, there are methods for inputting graphic data, such as a method of sequentially instructing vertices with a mouse and a method of drawing a locus of a graphic with a pen.
The graphic data storage means 31 stores features such as coordinates of vertices, angles and side lengths, and types of straight lines / curves. The input figure is displayed on the output means 4 (FIG. 18).
Step A, see FIG. 19 (a)).

Next, the user inputs the symmetric axis data using the symmetric axis input means 12. The input symmetry axis data is stored in the symmetry axis storage means 32. The symmetry axis is output to the output means 4 (step A2 and FIG. 19).
(B)).

In response to the input of the symmetry axis data, the symmetry determination means 21 stores the characteristic quantities such as the coordinates of the vertices of the shaping target graphic stored in the graphic data storage means 31 and the symmetry determination means 32. It is determined from the symmetric axis data whether or not the line symmetry can be shaped (step A3).

The specific processing procedure of the symmetry determining means 21 is the same as the procedure described with reference to FIGS. 4 and 5 in the first embodiment, and a description thereof will be omitted. When the symmetry determining unit 21 determines that the target graphic can be line-symmetrically shaped, the shaping reference element designating unit 53 designates a reference element or a reference element for shaping. For example:-Fix the position of the figure and match the position of the symmetry axis to the figure.

Fixing the position of the symmetry axis and aligning the position of the figure with the symmetry axis.

Shape is formed with reference to the coordinates of the vertex on either side of the symmetry axis, left or right (up or down). And so on. The symmetry processing means 22 shapes the figure in accordance with the contents of the shaping reference element designating means 53, and outputs the shaped figure to the output means 4 (step F1,
F2, FIGS. 19 (c), (d)). According to the sixth embodiment, since the user can specify the reference element of the feature amount during the symmetrization processing, it is possible to input a symmetrical figure more in accordance with the intention of the user.

In the sixth embodiment, the shaping reference element designating means 53 is added to the configuration of the first embodiment. However, if the configuration is added to the configuration of the second to fifth embodiments, The effect of the sixth embodiment is obtained in addition to the effect.

[0071]

As described above, the apparatus for inputting a symmetrical figure according to the present invention can input a symmetrical figure by a simple instruction of the user, so that the user of the symmetrical figure input can reduce the burden on the user. An interface is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is a flowchart showing a processing procedure according to the first embodiment of the present invention.

FIG. 3 is a diagram showing an example of feedback to a user displayed on an output unit 4 at each time in the first embodiment of the present invention.

FIG. 4 is a flowchart illustrating an example of a processing procedure for determining symmetry in a symmetry determining unit.

FIG. 5 is a diagram illustrating an example of a feature amount of a graphic referred to when determining symmetry.

FIG. 6 is a block diagram showing a second embodiment of the present invention.

FIG. 7 is a flowchart illustrating a processing procedure according to a second embodiment of the present invention.

FIG. 8 is a diagram showing an example of feedback to the user displayed on the output means 4 at each time point in the second embodiment of the present invention.

FIG. 9 is a block diagram showing a third embodiment of the present invention.

FIG. 10 is a flowchart illustrating a processing procedure according to a third embodiment of the present invention.

FIG. 11 is a diagram showing an example of feedback to the user displayed on the output means 4 at each point in the third embodiment of the present invention.

FIG. 12 is a block diagram showing a fourth embodiment of the present invention.

FIG. 13 is a flowchart illustrating a processing procedure according to a fourth embodiment of the present invention.

FIG. 14 is a diagram showing an example of feedback to the user displayed on the output means 4 at each point in the fourth embodiment of the present invention.

FIG. 15 is a block diagram showing a fifth embodiment of the present invention.

FIG. 16 is a flowchart illustrating a processing procedure according to a fifth embodiment of the present invention.

FIG. 17 is a block diagram showing a sixth embodiment of the present invention.

FIG. 18 is a flowchart illustrating a processing procedure according to a sixth embodiment of the present invention.

FIG. 19 is a diagram showing an example of feedback to the user displayed on the output means 4 at each time point in the sixth embodiment of the present invention.

FIG. 20 is a diagram illustrating an example of a “mirror” command used in a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 input device 2 data processing device 3 storage device 4 output means 5 pointing device 6 data processing device 7 pointing device 8 input device 9 data processing device 10 pointing device 11 graphic input means 12 symmetry axis input means 21 symmetry determination means 22 symmetry Processing means 23 Target graphic extracting means 24 Symmetry axis generating means 31 Graphic data storage means 32 Symmetry axis storage means 51 Line symmetry shaping processing instructing means 52 Target graphic instructing means 53 Shaping reference element instructing means

Claims (7)

(57) [Claims] 1. Graphic input means for inputting graphic data including a feature quantity, and target axis data indicating a target axis corresponding to the graphic data
, An object axis input means for inputting the object axis data, a graphic data storage means for storing the graphic data, an object axis storage means for storing the object axis data, and an object axis storage means and an object data storage means, respectively.
Features of stored symmetry axis data and the graphic data
Determines whether the figure can be axisymmetrically shaped based on
Symmetry judging means, and the target figure judged to be symmetrically shaped by the symmetry judging means
By modifying the feature of the shape,
The figure data containing the modified feature
Symmetry processing means for writing to the shape data storage means; and at least one of the figure data stored in the figure storage means.
Output means for displaying one of them . Place. 2. The method according to claim 1, wherein the symmetry determining means determines an intersection between the symmetry axis and the graphic to be shaped, and determines the symmetry axis by a shaping process.
Determine which vertex or side midpoint of the resulting figure passes through
And a second step of determining a set of vertices for determining symmetry
And the midpoint of the two vertices of the set determined in this second step
A third step of calculating the distance between the nominal axis and the angle between the line segment connecting the two vertices and the symmetry axis
The fourth step, and the third step and the fourth step
Run on vertices and pairs, average distance between midpoint and symmetry axis
And the fifth step of calculating the average of the angle difference with the axis of symmetry
And the average value obtained in the fifth step is determined in advance.
If the value is equal to or less than the calculated
2. The line-symmetrical graphic input device according to claim 1, wherein the input and output are executed . 3. Reference elements and references for shaping
A shaping reference element designating means for designating an element to perform,
The symmetrization processing means includes an instruction from the shaping reference element instruction means.
It is characterized in that the target figure is shaped symmetrically according to the contents.
3. The line-symmetric graphic input device according to claim 1, wherein 4. A graphic which responds to an instruction of a graphic to be shaped,
A target figure designating means for determining whether or not
Wherein the symmetry judgment unit is determined by the target graphic instructing means
The symmetry axis data and the feature
Determining whether axisymmetric shaping is possible based on the amount
4. The apparatus for inputting a line-symmetrical figure according to claim 1, 2 or 3 . 5. The symmetry input by the target axis input means.
The figure input from the input means at the position of the axis is
A target graphic extracting unit for determining a target graphic for naming, wherein the symmetry determining unit includes the symmetry axis data and the characteristic
In addition to the amount, based on the determination result by the target figure extracting means
To determine whether it is possible to perform line-symmetric shaping
A line-symmetric figure input device according to claim 1, 2 or 3 . 6. A top of a figure input from said figure input means.
Vertices that can be the axis of symmetry from
Suppose a combination of the midpoints of the sides and symmetrically set one of them
And a symmetry axis generating means for generating the axis as a candidate for the axis, wherein the symmetry determining means is inputted from the graphic input means.
Features and symmetry lines generated by the symmetry axis generation means
Determines whether line symmetry can be shaped based on complementary information
4. A line-symmetrical graphic input device according to claim 1, wherein 7. A graphic which responds to an instruction of a graphic to be shaped,
A target figure designating means for determining whether or not
Wherein the symmetry judgment unit is determined in the target graphic instructing means
Regarding the shaping target graphic, the characteristic amount and the symmetry axis
Determines whether line symmetry can be shaped based on complementary information
7. The apparatus according to claim 6, wherein: