JPH04303272A - Graphic preparing device - Google Patents

Abstract

PURPOSE:To easily plot the corners of respective parallel lines having required width without individually plotting respective lines on the parallel lines corresponding to each road width in the case of forming the corner of a road on a map. CONSTITUTION:When a width line preparing program area 14 is started, two pairs of plotting position data corresponding to the cursor operation of a keyboard 16 and width data set up by using the position data as reference lines are set up and stored in a graphic forming data buffer 7, and when a width line overlap judging part 2 judges the overlap of prescribed areas of respective reference line end parts, respective plotting start points and end points of two pairs of width lines set up by adopting a width line intersecting point on the inside of an overlap angle and its outside width line intersecting point as the common start and end points of respective width lines are found out by corner graphic decomposing part 9b and a specified graphic pattern read out from a graphic pattern area 15 is developed in a display RAM 20 correspondingly to respective start points to end points in the two pairs of width lines.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic creation device that is installed as a function of a word processor, for example, and is used when creating graphic data such as a map.

0002

2. Description of the Related Art Conventionally, when creating a map or the like using a word processor, for example, a graphic creation function is utilized.

That is, the operation mode of the word processor is set to the graphic creation mode, and the graphic creation program is started. Next, after selecting the type of figure desired to be drawn and the type and thickness of its figure line, the user operates the cursor pointer to designate the figure drawing range on the display screen. Then, a desired graphic pattern is displayed corresponding to the graphic drawing range indicated by the cursor.

[0004] In this case, for example, roads on a map can be drawn by combining straight and curved figure types, and buildings and landmarks can be drawn by combining other figure types such as squares, circles, and ellipses. can.

[0005]

[Problem to be Solved by the Invention] However, when using the conventional figure creation function described above, for example, when drawing a road on a map, parallel lines corresponding to the width of the road are drawn one by one, regardless of whether they are straight or curved. It was necessary to repeat the graphic creation operation twice to create one road.

Furthermore, especially when it is desired to draw a curved corner where two roads meet, the apex position of the curved corner is limited to a position that can be pointed by the cursor. , the intersection position cannot be processed as the vertex position of the curved angle.

In other words, if the intersection position of the two lines above corresponds to a position that can be pointed by the cursor, the remaining part can be deleted using the intersection position as the starting point, but if not, the remaining part can be deleted. It cannot be completely deleted.

[0008] The present invention has been made in view of the above problems.
For example, when creating the bends of a road on a map, there is no need to draw parallel lines corresponding to each road width individually.
Moreover, it is an object of the present invention to provide a graphic creation device which can easily draw a curved angle between parallel lines having a desired width without restricting the apex position of the curved angle to the position indicated by a cursor.

[0009]

[Means for Solving the Problems] That is, the figure creation device according to the present invention includes a width line creation designation means for designating the creation of two parallel lines that face each other, and A range setting means for setting the drawing range of the width line when specified, an interval setting means for setting the interval between the width lines when the creation of the width line is specified, and a drawing range of the width line and the width line. storage means for storing setting data for each interval as figure creation data; and when at least two sets of width line figure creation data are stored in the storage means, predetermined areas of respective width line ends overlap each other. width line overlap determination means for determining whether or not the width line overlaps; and when the overlap determination means determines whether different width line ends overlap each other, width lines on the inside of the overlap angle are determined based on the figure creation data stored in the storage means. The intersection point between the two width lines and the intersection point between the width lines on the outside of the overlapping angle are set as the common start point or end point for each width line, and the drawing start point and end point of one width line and the drawing start point and end point of the other width line are calculated by curved angle figure decomposition. and display means for expanding and displaying a line figure in correspondence between the drawing start point and the end point of each of the width lines.

0010

[Operation] In other words, when the width line creation mode is set by operating a specific key, the width line drawing range with the cursor locus as the reference line and the width line interval along the above reference line based on the numerical input etc. Once set, the overlap between the predetermined areas at the ends of each reference line is determined, and the intersection of the width lines on the inside of the reference line overlap angle and the intersection of the width lines on the outside of the overlap angle are determined to be common to each width line. The drawing start and end points of one width line and the drawing start and end points of the other width line are determined, and a graphic pattern such as a straight line is developed between the start point and end point of each width line. By doing so, a curved angle formed by two sets of parallel lines with an arbitrary interval (width) can be drawn and created.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a document creation device equipped with a graphic creation function according to the same embodiment.

In FIG. 1, 3 is a CPU, and 4 and 5 are memories (RAM, ROM) accessed by the CPU 3.
).

The CPU 3 controls the entire device, and accesses the RAM 4 and ROM 5 to start a program that follows input instructions, including kana-kanji conversion processing, document editing processing, and graphic creation processing for creating documents. It executes various processes.

The RAM 4 includes a document buffer 6 for storing document data (kana-kanji conversion results), a graphic creation data buffer 7 for storing contents set in the graphic creation process, and progress data associated with the graphic creation process. A graphic creation work buffer 8 and the like for temporarily storing the data and the like is provided.

The ROM 5 stores a program area 10 for storing a control program that defines all operations of the document creation device, a dictionary area 11 for storing dictionary data referred to in kana-kanji conversion, and font data. There are provided a character pattern area 12, a graphic pattern area 15 storing a plurality of types of basic graphic patterns selected in the graphic creation process, and the like.

The program area 10 includes a kana-kanji conversion program area 13 for storing a kana-kanji conversion program, and a figure creation program for creating two width lines parallel to the reference line when creating figures. A width line creation program area 14 and the like for storing the width line creation program area 14 and the like are provided.

On the other hand, 9a is a basic figure decomposition section, and 9b is a curved angle figure decomposition section.In these figure decomposition sections 9a and 9b,
Based on various setting data for graphic creation stored in the graphic creation data buffer 7, the target graphic data is decomposed into combinations of individual basic shapes (for example, straight lines). In this case, each of the graphic decomposition units 9a, 9b sequentially outputs display data decomposed into individual basic figures.

Reference numeral 2 denotes a width line overlap determination section, and this width line overlap determination section 2 uses the figure creation data buffer 7.
Based on various setting data for creating figures stored in If the width line overlap determination unit 2 determines that two sets of width lines do not overlap, display data is created through the basic figure decomposition unit 9a. In addition, this width line overlap judgment unit 2
If it is determined that the width lines of the set overlap, display data is created through the curved corner figure decomposition section 9b.

Further, 16 is a keyboard (KB), 17 is a keyboard interface (KB-IF), 18 is a display device, 19 is a display controller (display-CNT), 20
21 is a display RAM, and 21 is a floppy disk device (FDD).
), 22 is a hard disk device (HDD), 23 is FD
D interface (FDD-IF), 24 is an HDD interface (HDD-IF), 25 is a printer device (PRT), 26 is a printer interface (PRT)
-IF).

The keyboard (KB) 16 outputs input information necessary for document creation, graphic editing, etc. to the CPU 3 via the keyboard interface (KB-IF) 17.

In addition to character keys, cursor keys, etc., this keyboard 16 has "conversion/conversion" keys for instructing conversion from "kana" (reading) to kanji and for instructing execution of next candidate processing.
"Next Candidate" key, "Select/Execute" key to instruct to confirm various settings, "Cancel" key to instruct to interrupt processing or cancel input before confirmation, etc., create, edit, and edit documents and figures. Various function keys are provided, including "delete" and "insert" keys used for proofreading, etc., and a "cursor" key for specifying the functional range of document editing and graphic editing.

The display 18 is composed of a CRT, liquid crystal display, or the like. Display-CNT19 is CPU3
The display of the display 18 is controlled using the display RAM 20 under the control of the display RAM 20 .

[0024] The FDD 21 and the HDD 22 are connected to the FDD-IF 23 and the HDD-IF 2, respectively, under the control of the CPU 3.
4, various processing programs and document data are saved, and external characters (characters, symbols, marks, etc. other than JIS first level characters and second level characters), second level characters, etc. are recorded.

The PRT 23 receives the document stored in the document buffer 6 or the FDD 2 via the PRT-IF 24.
1. Read into the main body from the HDD 22 and store it in the document buffer 6
Printing is performed based on the document information stored in the .

FIG. 3 shows the data storage state of the graphic creation data buffer 7 provided in the RAM 4 of the document creation device. , line type data that indicates the thickness of the figure line, position data that indicates the figure drawing range specified using the cursor movement trajectory as the reference line, and the above criteria that are set only when specifying width line creation. Width data indicating the distance between two lines parallel to each other is stored.

Next, the graphic creation function of the document creation device with the above configuration will be explained.

FIG. 2 is a flowchart showing the graphic creation process of the document creation device. First, with the word processor set to the graphic creation mode by an instruction from the keyboard 16, for example, a road on a map is created. When width line creation is specified by operating the keyboard 16, a figure creation program stored in advance in the width line creation program area 14 in the program area 10 in the ROM 5 is activated under the control of the CPU 3 (step S
1, S2).

Then, an input request message for setting each element data for figure creation is displayed on the display 18, and the user operates the keyboard 16 in accordance with this input request message for figure creation element data. , the type of figure to be made into a width line (e.g. straight line), the figure line type (e.g. medium line), its width d (distance d/2 from the reference line), and the width corresponding to the cursor trajectory (reference line). When the line drawing range (A→B) is designated, this key input designation data is sequentially stored in the graphic creation data buffer 7 in the RAM 4 (steps S3, S4).

FIG. 4 shows the width line creation state on the display screen accompanying the width line creation process of the document creation device, that is, the shape type (straight line), the shape line type (medium line), and the width line. The interval d, and the width line drawing range by cursor operation (A →
B) is set as figure creation data, and when you press the "Select/Execute" key to display the figure, you will see whether two sets of width line creation instructions have been made as the figure creation data. Then, the width line overlap determination section 2 determines whether or not the two sets of width line data overlap (steps S5 and S6).

If it is determined in this step S6 to be "N", that is, there is no overlap in the width line creation data set in the figure creation data buffer 7, then each of the above-mentioned figures read out from the figure creation data buffer 7 The created data is sent to the basic figure decomposition unit 9a (step S6→
S7).

Then, in the basic figure decomposition section 9a, the width line drawing range (A→B) set as the figure creation data is
Based on the reference line position data indicating the width line interval d,
The purpose is to find the starting point, end point (a1, b1), and (a2, b2) on the display screen at which each basic figure (figure part) is to be drawn. Starting point, ending point data (a1, b1) and (a2
, b2) are given to the display controller 19 as basic figure decomposition data for display (step S8).

The display controller 19 reads a graphic pattern based on the graphic type (straight line) and graphic line type (medium line) set in the graphic creation data buffer 7 from the graphic pattern area 15 in the ROM 5, and also The read figure pattern is divided between the start point and end point (a1→b1) and (a2→b) of each basic figure given from the basic figure decomposition unit 9a.
2), and is developed in the display RAM 20 as display data, so that the reference line (A→B) indicated by the cursor is displayed on the display 18.
Width lines (a1→b1), (a2→
b2) is now displayed and output as a road on the map.

On the other hand, with the pair of width lines (a1→b1) and (a2→b2) displayed in advance through steps S1 to S8, the width lines (a1→b1), (a2→b2)
To create a bend on the road consisting of
When the second width line creation is designated by the operation 6, the figure creation program stored in advance in the width line creation program area 14 in the program area 10 in the ROM 5 is activated under the control of the CPU 3 as described above ( Steps S1, S2).

Then, an input request message for setting each element data for figure creation is displayed on the display 18, and the user operates the keyboard 16 in accordance with this input request message for figure creation element data. , the type of figure to be used as the second width line (for example, straight line), the figure line type (for example, medium line), and its width d (distance d/2 from the reference line)
, and when the width line drawing range (C→D) corresponding to the cursor locus (reference line) is specified, this key input specification data is sequentially stored in the figure creation data buffer 7 in the RAM 4 in the same manner as above ( Steps S3, S4).

Here, in the figure creation data buffer 7,
The figure creation data corresponding to the first width line displayed in advance and the figure creation data corresponding to the second width line newly instructed to be created this time are stored in parallel.

FIG. 5 shows the curved corner creation state accompanying the second width line creation process of the document creation device. 2
The above figure type (straight line), figure line type (medium line), width line interval d, and width line drawing range (C→D) by cursor operation corresponding to the width line of are set together as the figure creation data. If you operate the "Select/Execute" key to display the created figure in this state, you will be asked if two sets of width line creation instructions have been made as the shape creation data, and if the two sets of width line data overlap. It is determined by the width line overlapping determining section 2 whether or not the line overlaps (steps S5 and S6).

Here, FIGS. 5(A) to 5(C) show the case where a second width line drawing range (C→D), which is different from the first width line drawing range (A→B), is set. ing.

FIG. 6 shows the overlap determination state of the second width line range with respect to the first width line range. That is, the width line overlap determination section 2 uses the first width line range stored in the figure creation data buffer 7. Based on the second width line figure creation data, the end areas of each of the width line drawing ranges (A → B) and (C → D) are defined as a predetermined area surrounded by the width line interval d, and It is determined whether or not the end areas overlap. In this case, it is determined in step S6 as "Y", that is, it is determined that the first width line range and the second width line range overlap by the area K.

In this way, the graphic creation data buffer 7
When it is determined that there is overlap between the first and second width line creation data set in , this figure creation data buffer 7
The width line figure creation data read out from the above are sent to the curved corner figure decomposition section 9b (steps S6→S9).

Then, the curved corner figure decomposition unit 9b divides the reference line (A→B), based on the first and second width line figure creation data sent from the figure creation data buffer 7.
(C→D) overlap angle inner width line (a2, b2)
, (c2, d2) and the intersection y of the width lines (a1, b1), (c1, d1) on the outside of the overlapping angle are set as the common starting point or end point for each width line, and the first point on the display screen is The drawing start point, end point (a1, y), (a2
, x) and the drawing start point and end point (y, d1) of the second width line,
(x, d2), and the starting point and ending point data (
a1, y), (a2, x) and (y, d1), (x, d
2) is given to the display controller 19 as basic figure decomposition data for displaying the bending angle (step S9→S
8).

That is, for example, the overlap between the first width line (a1, b1) (a2, b2) and the second width line (c1, d1) (c2, d2) shown in FIG. 5(A) above On the other hand, in order to decompose it into basic shapes to create a curved angle, first,
Intersection point (BC) of each reference line (A→B), (C→D)
), find the bisecting point P on the acute angle side, and calculate this bisecting point P
Width lines (a2, b2), (c2, d
2) Width line (a1, b1) that is far away from the intersection x
, (c1, d1) by finding the intersection y,
Starting point and ending point data of each basic figure corresponding to the bending angle (a1
, y), (a2, x) and (y, d1), (x, d2)
will be obtained.

[0043] Here, the end area of the first width line and the second width line are
Even if the overlap K with the end area of the width line is recognized, if the actual intersection cannot be obtained between each width line, especially between the outer width lines, the intersection point on the extension thereof will be found. .

Then, the display controller 19 selects the figure type (straight line) set in the figure creation data buffer 7.
, the figure pattern based on the figure line type (medium line) is stored in ROM5
At the same time, the read figure pattern is read out from the figure pattern area 15 in the figure pattern area 15, and the read figure pattern is divided between the start point → end point (a1 → y), (a
2→x), (y→d1), and (x→d2), respectively, and are developed in the display RAM 20 as data to be displayed. First width line (a1, b1) (a2, b2
), the second width line (c1, d1) (c2
, d2) are displayed and output as the bending angle of the road on the map as shown in FIG.

Here, like the document data stored in the document buffer 6, each figure creation data set in the figure creation data buffer 7 is stored in a floppy disk device (FDD).
) 21, and the figure creation data read from this floppy disk device 21 can be decomposed into basic figures again and displayed on the display 18, or displayed on the printer device (P
It can also be printed at RT) 25.

Therefore, according to the document creation device equipped with the graphic creation function configured as described above, the ROM is
When the width line creation program area 14 in 5 is activated, drawing position data corresponding to the cursor trajectory set by operating the keyboard 16, width data corresponding to the vertical interval using this drawing position data as a reference line, and Set two sets of
The data is stored in the figure creation data buffer 7 in the RAM 4, and when the width line overlap judgment section 2 determines the overlap between the predetermined areas of the ends of each reference line based on this figure creation data, the reference line overlap angle is The drawing start point and end point of one width line and the drawing start point of the other width line on the display screen with the intersection of the width lines and the intersection of the width lines outside the overlapping angle as the common start or end point for each width line. and the end point are determined by the curved corner figure decomposition unit 9b, and the display controller 19
The graphic pattern specified by the user is read out from the graphic pattern area 15 into the display RAM 20, developed in correspondence between the starting point and the ending point of each width line, and displayed on the display 18. For example, when it is desired to draw a road and its turning angle on a map, the turning angle between parallel lines having a desired width can be easily created and displayed.

[0047] As a result, there is no need to create and display parallel lines corresponding to the road width one by one, unlike in conventional road map creation operations, and moreover, the position of the apex of a turning corner may be limited to the position indicated by the cursor. It disappears.

[0048]

As described above, according to the present invention, there is provided a width line creation specifying means for specifying the creation of two parallel lines facing each other, and a means for specifying width line creation that specifies the creation of two parallel lines facing each other; A range setting means for setting the drawing range of the width line, an interval setting means for setting the interval between the width lines when creating the width line is specified, and settings for the drawing range of the width line and the interval between the width lines, respectively. A storage means for storing data as figure creation data, and when at least two sets of width line figure creation data are stored in the storage means, it is determined whether predetermined areas of respective width line ends overlap. Width line overlap determination means, and when the overlap of different width line ends is determined by this overlap determination means, the intersection of the width lines on the inside of the overlap angle and the overlap based on the figure creation data stored in the storage means. Curved angle figure decomposition means for determining the drawing start point and end point of one width line and the drawing start point and end point of the other width line, with the intersection of the width lines on the outside of the angle as a common start point or end point for each width line;
Since the display means is configured to expand and display a line figure in correspondence between the drawing start point and end point of each width line, for example, when creating a turning angle of a road on a map, parallel lines corresponding to each road width can be displayed. To easily draw a curved angle between parallel lines having a desired width without having to draw each line individually and without restricting the apex position of the curved angle to the position indicated by a cursor.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a document creation device equipped with a graphic creation function according to an embodiment of the present invention.

FIG. 2 is a flowchart showing graphic creation processing of the document creation device.

FIG. 3 is a diagram showing a data storage state of a graphic creation data buffer provided in the RAM of the document creation device.

FIG. 4 is a diagram showing a width line creation state on the display screen accompanying the width line creation process of the document creation device.

FIG. 5 is a diagram showing a bending corner creation state accompanying the width line creation process of the document creation device.

FIG. 6 is a diagram showing an overlap determination state of a first width line range and a second width line range in the width line creation process of the document creation device.

FIG. 7 is a diagram showing a bending angle display state accompanying the width line creation process of the document creation device.

[Explanation of symbols]

2...Width line polymerization judgment section, 3...CPU, 4...RAM, 5...R
OM, 7...Figure creation data buffer, 8...Figure creation work buffer, 9a...Basic figure decomposition unit, 9b...Curved corner figure decomposition unit, 10...Program area, 14...Width line creation program area, 15...Figure pattern area, 16 ...Keyboard, 17...Keyboard interface, 18...Display device, 19...Display controller, 20...Display RAM,
21... Floppy disk device, 23... Floppy disk interface.

Claims (1)

[Claims] 1. Width line creation specifying means for specifying the creation of two parallel lines facing each other, and range setting for setting the drawing range of the width line when the creation of the width line is specified. means, an interval setting means for setting the interval between the width lines when the creation of the width lines is specified, and a storage means for storing setting data for the drawing range of the width lines and the interval between the width lines as figure creation data. width line overlap determination means for determining whether or not predetermined areas of respective width line end portions overlap when at least two sets of width line figure creation data are stored in the storage means; When the overlapping of different width line ends is determined by the means, the intersection of the width lines on the inside of the overlap angle and the intersection of the width lines on the outside of the overlap angle are determined based on the figure creation data stored in the storage means. Curved angle figure decomposition means for determining the drawing start point and end point of one width line and the drawing start point and end point of the other width line as a common starting point or end point of each width line; A graphic creation device comprising: display means for expanding and displaying line diagrams in correspondence with each other.