JP3177359B2 - Graphic drawing 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 graphic drawing apparatus for drawing a required graphic by designating two points, for example, a start point and an end point.

[0002]

2. Description of the Related Art FIG. 15 is a block diagram showing a configuration of a graphic drawing apparatus. The apparatus includes a display device such as a liquid crystal display or a CRT, a keyboard for an operator to input data and various kinds of instruction information, a printer for outputting created graphic data, a program executed by a CPU (central processing unit) 1 and Each device includes a ROM (read only memory) 5 having fixed data, a RAM 6 (randomly readable / writable memory) 6 for storing created graphic data, data such as variables used by the CPU 1, and the like. Is controlled by the CPU 1.

FIG. 16 is a plan view showing the keyboard 3. In the upper part of the figure, instruction information such as a function and a graphic type is assigned to each key, and a soft key 7 for selecting an instruction such as a function or a graphic type by inputting one of the keys. The cursor movement key 8 is arranged to the right, an execution key 9 below the cursor movement key 8 to instruct each function to be executed, and a cancel key 10 to the lower left to instruct cancellation of the function once instructed. Are located.

FIG. 17 is a functional block diagram showing main control functions of a CPU 1 provided in a conventional apparatus such as a word processor having a small number of functions and being inexpensive. A cursor control unit 11, a character control unit 12, and a soft key input control unit 13 for controlling data input from the keyboard 3 are provided. Each input data is controlled by a required control unit. To give. Further, the overall control unit 19 supplies the given data to the graphic data input / output unit 14 or the control variable input / output unit 15 so as to read the execution program from the ROM 5 and the RAM 6 and write the data into the RAM 6. It has become. The data to be displayed on the display device 2 includes a graphic drawing control unit 16 and a cursor display control unit.
17, is provided to a required control unit of the soft key display control unit 18 and is controlled and provided to the display device 2.

[0005] In the conventional apparatus having the above-described configuration, 2
When drawing graphic data specified by point position information,
There is a function of drawing a figure having a size that fits in an area surrounded by two points. For example, in order to draw a rhombus figure, the figure type called rhombus is selected by operating the soft key 7, and then the start point S and the end point E are specified by operating the cursor movement key 8, as shown in FIG. S
Is drawn in a rectangular area surrounded by the range from the line to the end point E and the range from the column of the start point S to the column of the end point E.

[0006]

In such a conventional apparatus, for example, when drawing a rhombus connected to a point A which is an end of a previously drawn line segment, a required rhombus is once drawn. Later, there is a method of adjusting the position information of the diamond, or setting the positions of the start point S and the end point E accurately. However, in the former method, it is necessary to move the graphic after the drawing is once completed, and the workability is poor.

In the latter method, the positions of the vertices of the rhombus change according to the position of the end point E, and therefore the following method must be performed. That is, a description will be given of a case where the start point S and the diamond vertex B located on the same line as shown in FIG. 18A are connected. First, the point A is the same line, and the desired diamond column direction is A starting point S is set at a position that is a column that has moved to the left by half the length, and a column corresponding to a position symmetrical with respect to the starting point S and the point A. An end point E is set at a position that is a line moved downward by that amount. The same applies to the case where a vertex B and a point A of a rhombus located in the same column as the starting point S as shown in FIG. First, the starting point S is set at a position that is the same column as the point A, and is a line that has moved downward from the point A by half of the desired diamond-shaped line direction length,
An end point E is set at a position corresponding to a line which is vertically symmetrical with respect to the start point S and the point A, and which is a column shifted to the right by a desired length in the column direction of the rhombus. In any case, even if the end point E is slightly deviated, the point A and the vertex B do not coincide with each other, so that very skilled skill of the operator is required.

Further, in the conventional apparatus, since the structure of the graphic data differs depending on the graphic type, it is impossible to change the type of the graphic being drawn. If this change is desired, the drawing process is canceled and the graphic processing is performed again. There was no other way but to specify the seed and then draw.

The present invention has been made in view of the above circumstances, and sets a plurality of graphic patterns in which required points related to a graphic are fixed, and converts the graphic pattern from positional information of two given points. It is an object of the present invention to provide a graphic drawing apparatus that can determine a position of a graphic by a simple key operation and in a short time. Also, once the graphic pattern is determined, the positional relationship between two points or the graphic type is changed, and the graphic pattern can be determined again. It is an object of the present invention to provide a graphic drawing apparatus which does not need to repeat the operation from the beginning.

[0010]

According to a first aspect of the present invention, there is provided a document creation processing apparatus which draws a graphic defined by position information of two points indicating drawing of a graphic and graphic type information indicating a type of the graphic. In the device, the positional relationship between the two points
Fixed when the drawing area and the two points are expanded and contracted
Position of the fixed points involved in shape Yes set different graphic patterns, determining means for graphic patterns applicable on the basis of the positional relationship between the indicated the two points, is determined by said means figure It is characterized by comprising means for calculating a drawing position of a figure based on a pattern, and means for performing drawing based on the drawing position calculated by the means and a designated figure type.

A graphic drawing apparatus according to a second aspect of the present invention, in the first aspect, comprising: means for changing the positional relationship between the two points and / or the type of the graphic after determining the graphic pattern; And a means for re-determining the graphic pattern.

[0012]

According to the first aspect of the present invention, a graphic pattern for fixing required different points such as a point on a graphic, a center of the graphic, a point indicating the position of the graphic, and the like is created according to a positional relationship between the two points. The graphic pattern is determined based on the input position information of the two points and is drawn. This makes it possible to draw a graphic by fixing required points involved in the graphic, so that, for example, operations such as connection with another graphic and alignment can be easily performed. Even when the size, shape, and the like of the figure are changed, if the initial positional relationship is maintained, the required points are fixed, and it is not necessary to repeat the drawing operation from the beginning.

According to the second aspect of the present invention, even after the graphic pattern is once determined, a means for determining the graphic pattern again after changing the positional relationship between two points and / or the graphic type is provided, so that during the drawing, Since these changes can be made, it is possible to easily change the size, shape, type, fixed points related to the figure, and the like of the figure. Therefore, operations such as connection with other figures, positioning, and complicated figure drawing can be easily performed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. FIG. 1 is a functional block diagram showing main control functions of the CPU in the graphic drawing apparatus according to the present invention. A cursor control unit 11, a character control unit 12, and a soft key input control unit 13 for controlling data input from the keyboard 3 shown in FIG. 15 are provided. It is provided to the control unit 19. The overall control unit 19 gives the given data to the graphic data input / output unit 14 or the control variable input / output unit 15,
An execution program is read from the ROM 5 and the RAM 6 and data is written to the RAM 6. The data displayed on the display device 2 (see FIG. 15 ) includes the graphic drawing control unit 16 and the cursor display control unit.
17, is provided to a required control unit of the soft key display control unit 18 and is controlled and provided to the display device 2.

The above is the same as the conventional apparatus, but in the apparatus of the present invention, based on the position information of the start point S and the end point E provided from the cursor control unit 11 and the soft key input control unit 13, these start point S and end point E It is determined which of the plurality of pre-set graphic patterns whose fixed points relating to the figures are different corresponds to which graphic pattern, and the positional information of the start point S and the end point E and the graphic type data A graphic pattern determination unit 20 for calculating a graphic drawing position based on the graphic pattern determination unit 20 is provided. Then, data indicating the figure drawing position is given to the figure drawing control unit 16 via the overall control unit 19, and the figure drawing control unit 16 performs figure drawing based on the figure data such as the figure drawing position and the figure type. It has become.

FIG. 2 is a diagram for explaining a graphic pattern in the present embodiment, and shows a case of a rhombus. In this embodiment, 4
One figure pattern is set, and the first figure pattern is assumed to be a rectangle (shown by a broken line in the figure) composed of horizontal (column) and vertical (line) lines circumscribing a rhombus. , in which a fixed point F ₁ point corresponding to the upper left vertex of the said rectangular. The second pattern has a fixed point at the vertex F ₂ on the upper side of the diamond, the third pattern has a fixed point at the point F ₃ located at the center of the diamond, and the fourth pattern has a fixed point at the left side of the diamond . it is to a fixed point vertex F _4. These fixed points are the positions of the start point S arbitrarily specified, and the figure pattern to be determined differs depending on the position of the end point E with respect to the start point S. This determination method will be described later.

FIG. 3 is an explanatory diagram showing the components of the graphic data. The figure data includes a state flag 30, which indicates a processing state during drawing, such as a data confirmed state, an unconfirmed state (processing selection state), and a graphic type 31, which indicates a type of a figure such as a rectangle or a diamond.
Graphic attributes 32 indicating attributes such as line type and hatch, upper left position 33 where the intersection point of the leftmost column where the graphic exists and the uppermost line is the coordinate point, and the rightmost column and lowermost line where the graphic exists It consists of information on the lower right position 34 in the drawing with the intersection as coordinates. In the present invention, since the graphic data structure is common even when the graphic type 31 is different, even when the graphic type 31 is changed, it is not necessary to change the entire graphic data structure, and the upper left drawing position 33, the lower right drawing position 34 or the graphic Species 31 changes can be made.

FIG. 4 is a flowchart showing a processing procedure in the apparatus of the present invention. First, when the operator designates an arbitrary cursor position on the keyboard 3 as a starting point S,
This position information is stored as an initial value in a register in the CPU. When the initial value of the start point S is set, a value equivalent to this is stored in the register as the initial value of the end point E (step S).
1). Next, when the operator specifies a graphic type using the keyboard 3, the graphic type data is also stored as an initial value in a register in the CPU (step S2).

The graphic pattern determining unit 20 determines the graphic pattern and calculates the upper left position information and the lower right position information based on the positional relationship between the start point S and the end point E based on a determination method described later (step S3). ), A graphic is drawn based on the graphic pattern, the upper left drawing position information, the lower right drawing position information and the graphic type data obtained in step S3, and the graphic is displayed on the display device (step S4). Drawing the upper left position are those located at the intersection of the uppermost column leftmost column that there is graphic, the vertex D ₁ of the upper left rectangular shape in FIG. 2 is circumscribed. The drawing the lower right position are those located at the intersection of the rightmost column and lowermost column is present figure, the vertex D ₂ at the bottom right of the rectangular shape in FIG. 2 is circumscribed. In this state, the apparatus enters a state of waiting for key input by the operator. For example, when the operator looks at the screen displayed on the display device and inputs any key (step S5), the figure displayed on the display device is temporarily deleted (step S6). ).

Thereafter, it is determined whether or not the key input by the operator is the execution key 9 (see FIG. 16) (step S7). If it is determined that the execution key 9 has been input, the figure position is determined. Therefore, the figure is drawn again (step S8), and the figure data such as the upper left position of the drawing, the lower right position of the drawing, and the type of the figure are stored in the RAM 6 (step S8).
9) End the creation program.

If it is determined in step S7 that the execution key 9 has not been input, it is determined whether or not a cancel key 10 (see FIG. 16) has been input (step S10).
When it is determined that is input, the creation program is terminated and the set initial value is deleted. If it is determined in step S10 that the cancel key 10 has not been input, it is determined whether or not the cursor key 8 (see FIG. 16) has been input (step S11). If it has been determined that the cursor key 8 has been input, Then, the position information of the cursor 8 by the input of the cursor key 8 is updated as the position information of the end point E (step S12), and the graphic type to which the instruction information of the graphic type change newly assigned in the present embodiment is assigned. Change key (not shown)
Is determined (step S13). If it is determined in step S11 that the cursor key has not been input, the process directly proceeds to step S13.

If it is determined in step S13 that the graphic type change key has been input, the graphic type is updated based on the input of the graphic type (step S14). Then, returning to step S3, the figure pattern is determined again based on the position information of the start point S set first and the position information of the end point E given at that time. If it is determined in step S13 that the graphic type change key has not been input, the process directly returns to step S3 to determine the graphic pattern again. After redetermining the graphic pattern, the following flow is repeated.

In the data given in the first processing,
Since the position of the start point S and the position of the end point E are equivalent, the figure drawn in step S4 is a point, and
Even when the program proceeds to step 8 and the creation program ends, the figure obtained is a point. Therefore, a two-dimensional figure cannot be obtained unless the end point E is updated at least once.

Next, a method of determining a graphic pattern in the apparatus of the present invention will be described. The graphic pattern is divided into the following four patterns according to the positional relationship between the start point S and the end point E. As shown in FIG. 5, when the starting point S is a temporary origin of a coordinate system using two orthogonal directions (column direction and line direction) on the screen as coordinate axes, if the end point E exists in the fourth quadrant, One pattern, a second pattern if present in the third quadrant, a third pattern if present in the second quadrant, and a fourth pattern if present in the first quadrant.

FIG. 6 shows a case where the end point E exists in the fourth quadrant.
This shows the case of a pattern, in which a diamond is drawn. In this first pattern, the start point S and the end point E
Is drawn in an area surrounded by the line coordinates and the column coordinates, and the upper left position of the drawing is used as a fixed point.
At this time, the upper left drawing position D ₁ is equivalent to the start point S, and the lower right drawing position D ₂ is equivalent to the end point E.

[0026] Thus the drawing the upper left position D ₁ from the position information of the start point S and end point E, the procedure for obtaining the drawing lower right position D _2, as shown the flow chart in FIG. 7, the drawing upper left position line coordinates S _y of the start point S set the line coordinates D _1y of D _1, and sets the column coordinate S _x of the starting point S to the column coordinate D _1x drawing the upper left position D ₁ (step S21). Then, the line coordinates E _y of the end point E are drawn to the line coordinates D of the lower right position D ₂ of the drawing.
Set to _2y, set the column coordinates E _x of the end point E to the column coordinate D _2x drawing the lower right position D ₂ (step S22).

FIG. 8 shows a second example in which the end point E exists in the third quadrant.
This shows the case of a pattern, in which a diamond is drawn. In the second pattern, a figure which is symmetrical left and right around the y-axis passing through the starting point S is drawn, and a point at the center of the uppermost line of the figure is set as a fixed point. At this time, the line coordinates of the upper left drawing position D ₁ are equivalent to the line coordinates of the start point S, and the column coordinates of the upper left drawing position D ₁ are equivalent to the column coordinates of the end point E. The line coordinates of the lower right position D ₂ are the same as the line coordinates of the end point E, and the column coordinates of the lower right position D ₂ are the difference between the column coordinates of the start point S and the column coordinates of the end point E. Equivalent to adding to column coordinates.

[0028] Thus the drawing the upper left position D ₁ from the position information of the start point S and end point E, the procedure for obtaining the drawing lower right position D _2, as shown the flow chart in FIG. 9, the drawing upper left position line coordinates S _y of the start point S set the line coordinates D _1y of D _1, and sets the column coordinates E _x of the end point E to the column coordinate D _1x drawing the upper left position D ₁ (step S31). Then, the line coordinates E _y of the end point E are drawn to the line coordinates D of the lower right position D ₂ of the drawing.
Set to _2y, set the column coordinate S _x and the column coordinate D _2x drawing what the difference between the column coordinates E _x of the end point E was added to the column coordinate S _x of the starting point S lower right position D ₂ of the start point S (Step S32).

FIG. 10 shows a state in which the end point E exists in the third quadrant in the second quadrant.
This shows the case of a pattern, in which a diamond is drawn. In this third pattern, a figure that is vertically symmetrical about the x-axis passing through the starting point S and symmetrical left and right about the y-axis passing through the starting point S is drawn, and the figure center point is a fixed point. is there. At this time, the line coordinates of the upper left drawing position D ₁ are equivalent to the line coordinates of the end point E, and the column coordinates of the upper left drawing position D ₁ are equivalent to the column coordinates of the end point E. The line coordinates of the drawing the lower right position D ₂ is equivalent to plus the difference between line coordinates of the line coordinates and the end point E of the starting point S to the line coordinates of the starting point S, drawing the lower right position D ₂ column coordinates Is equivalent to adding the difference between the column coordinates of the start point S and the column coordinates of the end point E to the column coordinates of the start point S.

The procedure from the position information of the start point S and end point E determine the drawing the upper left position D _1, rendering lower right position D ₂ is therefore, as shown the flow chart in FIG. 11, the drawing upper left position line coordinates E _y of the end point E set the line coordinates D _1y of D _1, and sets the column coordinates E _x of the end point E to the column coordinate D _1x drawing the upper left position D ₁ (step S41). Then set what the difference between the line coordinates S _y and the line coordinates E _y of the end point E of the starting point S is added to the line coordinate S _y of the start point S in the drawing the lower right position D ₂ line coordinates D _2y, the starting point S column coordinates S _x and sets those applied to the column coordinate S _x of the starting point S the difference between the column coordinates E _x a column coordinate D _2x drawing the lower right position D ₂ of the end point E (step S42).

FIG. 12 shows a fourth example in which the end point E exists in the first quadrant.
This shows the case of a pattern, in which a diamond is drawn. In the fourth pattern, a figure which is vertically symmetrical about the x-axis passing through the starting point S is drawn, and a point at the center of the left end column of the figure is set as a fixed point. Line coordinates of the drawing the upper left position D ₁ at this time is equivalent to the line coordinate of the end point E,
Column coordinates of the drawing the upper left position D ₁ is equivalent to the column coordinate of the start point S. The line coordinates of the drawing the lower right position D ₂ is equivalent to plus the difference between line coordinates of the line coordinates and the end point E of the starting point S to the line coordinates of the starting point S, drawing the lower right position D ₂ column coordinates Is equivalent to the column coordinates of the end point E.

[0032] Thus the drawing from the position information of the start point S and end point E upper left position D _1, the procedure for obtaining the drawing lower right position D _2, as shown the flow chart in FIG. 13, the drawing upper left position line coordinates E _y of the end point E set the line coordinates D _1y of D _1, and sets the column coordinate S _x of the starting point S to the column coordinate D _1x drawing the upper left position D ₁ (step S51). Then set what the difference between the line coordinates S _y and the line coordinates E _y of the end point E of the starting point S is added to the line coordinate S _y of the start point S in the drawing the lower right position D ₂ line coordinates D _2y, endpoint E the column coordinates E _x is set to the column coordinate D _2x drawing the lower right position D ₂ (step S52).

A specific example of drawing with the apparatus of the present invention having the above configuration will be described. Vertex B located above the diamond
If it is desired to fix (FIG. 14 (a)), the end point E is set to the lower left of the start point S, so that the end point E is located in the third quadrant in the coordinate system with the start point S as the origin. Is determined to be the second pattern shown in FIG. At this time, even if the end point E is moved to change the size and shape of the rhombus, if the movement is within the above-described third quadrant, the upper vertex of the rhombus is fixed as the starting point S. Is easy to align. As shown in FIG. 14 (a), when such a vertex B is connected to a point A which is an end of a line segment drawn above the vertex B, the starting point S is first set to the position of the point A, The end point E is changed to an arbitrary position at the lower left of the start point S where a rhombus of a required size and shape is obtained, and a figure is drawn. In this way, the operation can be completed in a short time with a simpler key operation than in the related art.

As shown in FIG. 14 (b), when the vertex B located on the left side of the diamond is connected to the point A which is the end of the line segment drawn on the left side, the end point E is connected to the start point S Since the end point E is located in the first quadrant in the coordinate system with the start point S as the origin, the figure pattern determination unit 20
Is determined to be the fourth pattern shown in FIG. When drawing is performed by moving the end point E to a required position, graphic connection is completed.

As described above, if the positional relationship between the start point S and the end point E is set depending on which position of the figure is desired to be fixed, the figure pattern determination unit 20 can perform drawing with a required figure pattern. Further, the position change of the end point E and the change of the graphic type can also be performed during a series of drawing operations. As a result, operations such as connection of figures can be performed more easily and in a shorter time than before. In this embodiment, the case where a rhombic figure is drawn has been described. However, it is needless to say that the present invention can be applied to a case where another figure defined by position information of two points, for example, an isosceles triangle or the like is drawn. Nor.

[0036]

As described above, the figure drawing apparatus according to the present invention can draw a figure by fixing required points related to the figure by the positional relationship between two points. Work such as connection and alignment of the camera can be easily performed.
Even when the size, shape, and the like of the figure are changed, if the initial positional relationship is maintained, the required points are fixed, and it is not necessary to repeat the drawing operation from the beginning. Further, since a means for changing the positional relationship of two points or the type of graphic after determining the graphic pattern is provided, it is not necessary to repeat the drawing work from the beginning for these changes as in the conventional case. The present invention achieves excellent effects, such as simplification of work and reduction of time.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a control function of a graphic drawing apparatus according to the present invention.

FIG. 2 is a diagram illustrating a graphic pattern according to the present embodiment.

FIG. 3 is an explanatory diagram showing components of graphic data in the apparatus of the present invention.

FIG. 4 is a flowchart showing a processing procedure in the apparatus of the present invention.

FIG. 5 is an explanatory diagram showing a graphic pattern in the present embodiment.

FIG. 6 is an explanatory diagram showing a first pattern in the present embodiment.

FIG. 7 is a flowchart illustrating a processing procedure for obtaining graphic position information in a first pattern.

FIG. 8 is an explanatory diagram showing a second pattern in the present embodiment.

FIG. 9 is a flowchart illustrating a processing procedure for obtaining graphic position information in a second pattern.

FIG. 10 is an explanatory diagram showing a third pattern in the present embodiment.

FIG. 11 is a flowchart illustrating a processing procedure for obtaining graphic position information in a third pattern.

FIG. 12 is an explanatory diagram showing a fourth pattern in the present embodiment.

FIG. 13 is a flowchart illustrating a processing procedure for obtaining graphic position information in a fourth pattern.

FIG. 14 is an explanatory diagram showing a drawing execution state in the apparatus of the present invention.

FIG. 15 is a block diagram illustrating a main configuration of the graphic drawing apparatus.

FIG. 16 is a plan view showing a keyboard of the graphic drawing apparatus.

FIG. 17 is a functional block diagram showing a control function of a conventional graphic drawing apparatus.

FIG. 18 is an explanatory diagram showing a drawing execution state in a conventional apparatus.

[Explanation of symbols]

 11 Cursor control unit 12 Character control unit 13 Soft key input control unit 14 Graphic data input / output unit 15 Control variable input / output unit 16 Graphic drawing control unit 17 Cursor display control unit 18 Soft key display control unit 19 Overall control unit 20 Graphic pattern judgment Department

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masato Yano 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Yoshinori Onda 2--18-18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-5-143705 (JP, A) JP-A-6-348398 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06T 1 / 00 G06T 11/60-17/50 G06F 3/00 G06F 3/14-3/153 G09G 5/00-5/40

Claims (2)

(57) [Claims] 1. A graphic drawing apparatus which draws a graphic defined by position information of two points for instructing drawing of a graphic and graphic type information indicating a type of the graphic, wherein a drawing area and the 2 Extend between points
Position of the fixed points involved in figure fixed upon condensation is Yes set different graphic patterns, determining the appropriate figure pattern based on the positional relationship of the front <br/> SL two points indicated Determining means for calculating the drawing position of the figure based on the figure pattern determined by the means; and means for performing drawing based on the drawing position calculated by the means and the designated figure type. A graphic drawing device comprising: 2. A means for changing the positional relationship between the two points and / or the type of graphic after determining the graphic pattern, and a means for determining the graphic pattern again after performing the change by the means. The graphic drawing apparatus according to claim 1, further comprising: