JPH05143705A - Graphic plotting device - Google Patents

Abstract

PURPOSE:To plot various graphics with the same simple operation by designating the area of a rectangle and plotting a graphic in the rectangle based on the size of the graphic decided by the enlargement/reduction of the rectangle and the kind of the graphic obtained by the kind designation of the graphic. CONSTITUTION:A starting point is instructed, an ending point on a diagonal to the starting point is instructed, the rectangle is platted from the starting point and the ending point, the plotted rectangle is enlarged/reduced by inverting the starting point or the ending point or moving the starting point or the ending point as needed, the prescribed graphic is selected from a graphic storing means 2 storing various graphics based on the rectangle plotted there and the graphic selected by a graphic selecting means 4 is plotted in the area designated by the plotted rectangle. When plotting the graphic, the area of the rectangle is designated and in the rectangle, the graphic is plotted based on the size of the graphic decided by enlarging/reducing the rectangle and the kind of the graphic obtained by the kind designation of the graphic. Further, the central position of the graphic or the external position of the graphic is moved by changing a position to be enlarged or reduced.

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 various kinds of graphics on a display by the same operation.

[0002]

2. Description of the Related Art In the conventional graphic drawing, the drawing operation differs depending on the type of the graphic such as a straight line, a circle, a square, etc. Also, in each figure, there are a plurality of operations instead of one operation.

For example, (1) operation of a straight line ・ designation of two points at both ends ・ designation of one point and angle (2) operation of a circle ・ designation of one center point and radius ・ two points on the center and circumference Designation ・ Designation of 2 points on the circumference (3) Operation of square ・ Designation of 2 points on the diagonal ・ Designation of vertical / horizontal length (4) Operation of ellipse ・ Center point and on ellipse (diameter, minor axis) 2) Designation ・ Drawing processing is executed by designating the central point and major and minor axes.

An example of the patent publication is Japanese Patent Laid-Open No. 63-
The technology published in the publication No. 240671 is also related to the above technology.

[0005]

The conventional graphic drawing operation differs depending on the type of the graphic, and each graphic has a plurality of operating methods. In such a drawing operation, if the number of types of figures increases, many complicated operations must be learned. Therefore, it took a considerable amount of training to become skilled.

Further, in the conventional drawing method of this type, the position cannot be freely adjusted. For example, when drawing a quadrangle, after the start point of the quadrangle is changed, the overall shape of the quadrangle can be changed by changing the position that specifies the end point of the quadrangle. No changes could be made.

Therefore, an object of the present invention is to provide a graphic drawing apparatus which can draw various kinds of figures by the same simple operation and which can easily position the figures.

[0008]

A graphic drawing apparatus according to the present invention indicates a start point, an end point on a diagonal line with the start point, draws a rectangle from the start point and the end point, and
If necessary, reverse the start point or end point, or move the start point or end point to enlarge or reduce the drawn rectangle, and from there, from the figure storage means that stores various figures based on the drawn rectangle. A predetermined figure is selected, and the figure selected by the figure selecting means is drawn in the area designated by the drawn rectangle.

[0009]

According to the present invention, when drawing a figure, a rectangular area is designated, and the size of the figure determined by enlargement / reduction of the rectangle and the type of the figure obtained by specifying the type of the figure Draw a shape. All the prepared figures are drawn by the unified operation of specifying the rectangle and the figure type. Further, the center position of the figure or the outer shape position of the figure is moved by changing the position of enlargement or reduction.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an overall block diagram showing a figure drawing apparatus according to an embodiment of the present invention. FIG. 2 is an explanatory diagram showing a key arrangement of the keyboard for instructing the drawing of the figure in FIG. 1, designating the start point / end point, designating the figure type, and switching designation of whether to move the start point or the end point.

FIG. 3 is a flow chart of a part of the graphic drawing process of the graphic drawing device according to the embodiment of the present invention. FIG. 4 shows another part of the graphic drawing process of the graphic drawing device according to the embodiment of the present invention. It is a flowchart.

FIG. 5 is an explanatory view showing a display example of an input editing state of the figure drawing device in the embodiment of the present invention, and FIG. 6 is a state in which a line drawing key of the figure drawing device in the embodiment of the present invention is pressed. 7 is an explanatory view showing a display example of FIG. 7, and FIG. 7 is a cross cursor (“+”) of the graphic drawing apparatus in the embodiment of the present invention.
8 is an explanatory view showing a display example in which the cursor is moved, FIG. 8 is an explanatory view showing a display example when a figure is confirmed by the execution key of the figure drawing apparatus in the embodiment of the present invention, and FIG. FIG. 10 is an explanatory view showing a display example in which the line type of the graphic drawing apparatus in one embodiment is changed from a straight line to a circle. FIG. 10 specifies the start point / end point movement switching of the graphic drawing apparatus in one embodiment of the present invention and moves the start point. It is explanatory drawing which shows the example of a display of the state to do.

In FIG. 1, a central processing unit 1 corresponds to a computing means such as a microcomputer and a computer, and performs computation and program control of the graphic drawing apparatus of this embodiment. The random access memory 2 uses various input / output information, programs for drawing figures, rectangles, etc., starting point and ending point coordinate information, figure type information, and starting points as information for changing the size of the figure by moving either the starting point or the ending point. The end point movement switching information and the like are retained. The rectangle generation unit 3 generates a signal for drawing a rectangular graphic having a start point and an end point on a diagonal line on the display 6 based on the start point and end point information. The keyboard 4 is an input means for designating a graphic, designating a start point / end point, designating a graphic type, and designating whether to move the start point or the end point. The figure generation unit 5 outputs a specific figure from the start point / end point information and the figure type information in which various figures or figure expression formulas are stored in a built-in memory. The display 6 is means for displaying a rectangle, a figure, and a cross cursor (“+” cursor).

In FIG. 2, reference numerals 401 to 410 are soft keys, and all the functions are not directly related to the gist of the present invention, so that they will not be described in detail, but the soft keys 401 to 410 and the functions are not uniquely defined. It corresponds to the soft menu displayed at the bottom of the screen of the display 6, and when it is not displayed on the display 6, the key at that position is an invalid key. The move keys 420 to 423 are function keys for moving the start point or the end point of the rectangle vertically and horizontally by the cursor. The execute key 430 is a key operated when a specific operation is performed.

In the present embodiment, as the initial screen, the soft keys 401 to 401 corresponding to the ten displays in the lower column shown in FIG.
410 works. For example, the soft key 401 has an area creating function, the soft key 402 has an area editing function, ..., The soft key 409 has a document utilization function, and the soft key 410 has a line drawing function. At this time, when the line drawing mode is selected by the soft key 410, a graphic drawing menu for executing graphic drawing is displayed, and the soft keys 401 to 410 function corresponding to the ten displays in the lower column shown in FIG. For example, the soft key 401 is a straight line, the soft key 402 is a rectangle, ...
., Softkey 409 selects line type, Softkey 410
Has a function such as deletion.

Next, the operation of the graphic drawing apparatus thus constructed according to the embodiment of the present invention will be described with reference to the flow charts of FIGS.

The routines of FIGS. 3 and 4 are called during execution of the main program when the graphic drawing apparatus of this embodiment is used as a word processor or the like.

First, it is assumed that there is an input editing function such as character input in a normal word processor as shown in FIG. 5 (step S1). If the line drawing key 410 is not operated, this routine is exited. Line drawing key 4
When 10 is operated, a graphic drawing mode for executing graphic drawing is entered (step S2). That is, as shown in FIG.
When the line drawing key 410 corresponding to the soft menu at the bottom of the screen of the display 6 is operated while the soft menu is displayed at the bottom of the screen of the display 6, the graphic drawing mode is set (steps S3 and S4). At this time, the position of the cursor C becomes the starting point of the line drawing. Therefore, first, in order to clarify the position of the starting point, the figure drawing menu key 410 is operated with the position of the cursor C moved to the starting point of the line drawing.

When the figure drawing mode is entered, as shown in FIG. 6, the cursor C is changed from the square blink for character input editing to the cross cursor C for performing cross blink, and the line type is set to a straight line of a straight line as a default value. Then 1 line 1
The character segment is moved to assume the end point position, and is set to the initial display state (step S6) and set in the random access memory 2. Similarly, the end point movement is set as a default value of the start point / end point movement that specifies whether the current position of the cursor C is the start point or the end point (step S).
7). Then, as shown in FIG. 6, a rectangle is displayed by a broken line with the position of the cursor C where the graphic drawing menu key 410 is operated as the starting point, and the position where the cursor C is moved by one character per line as the ending position ( Step S8). In the rectangle drawn by the broken line between the start point and the end point of the cursor C selected by the figure drawing menu key 410,
A graphic, that is, a straight line is drawn and displayed by the set line type. Further, the end point position is displayed by the cross cursor C based on the start point / end point movement information. The straight line of the graphic selected as the default value indicates the corresponding function of the soft menu displayed on the display 6 in reverse as shown in FIG.

Here, when the position of the cross cursor C is moved by operating the move keys 420 to 423 for moving the start point or the end point of the rectangle vertically and horizontally, the move key 42 is used.
By the operations of 0 to 423, first, the cross cursor C,
And erase the rectangle drawn by the broken line (step S
12, step S13), the position of the start point or the end point is moved by the cross cursor C, and the start point / end point position is reset based on it (step S14), and the routine from step S8 to step S11 is repeatedly executed. As a result, it is possible to display a rectangular display with a broken line around the start point in an enlarged or reduced manner, combine the selected figure therewith, and consequently enlarge or reduce the selected figure.

Further, when the execution key 430 is pressed in step S11, the figure that has been displayed up to that point is set. Therefore, the figure that has been displayed up to that point is fixedly maintained, and the cross cursor C, and The rectangle drawn by the broken line is deleted (steps S15 and S16),
In order to return to the normal input edit mode, the input edit mode display is entered (step S17), and this routine is exited. For example, assume that the cursor at the end point position in the display state of FIG. 6 is moved, the figure is enlarged, and the cross cursor position shown in FIG. Here, when the execution key 430 is pressed, the display example when the rectangular display by the broken line which has been displayed until then is erased and the figure shown in FIG.

Then, in step S11, the line type change key 4
When 09 is pressed, the cross cursor C is erased (step S18), a plurality of line types are sequentially changed to a solid line, a thick solid line, a one-dot chain line, a two-dot chain line, a broken line, a dotted line, and a rotation, and then they are re-executed. Set (step S19), step S
The routine from 9 is executed.

When the start point / end point movement switching key 408 for switching the start point / end point is pressed, the start point and the end point of the cursor are switched to each other, and the routine from step S10 is repeatedly executed (step S21). As a result, a rectangular display with a broken line is displayed by enlarging or reducing the center of the start point, the selected figure is combined therewith, and as a result, when the selected figure is enlarged or reduced, the start point and the end point can be replaced and enlarged or reduced. So
As a result, the center position of the figure can be changed. For example, the position of the cross cursor C at the end point of FIG. 7 can be changed to the position of the cross cursor C shown in FIG. 10 by moving the cross cursor C to the position corresponding to the start point of FIG.

On the other hand, in step S11, the soft keys 401 to 405 as figure selection keys are used to select straight lines, squares,
When a circle is selected from among the circles as shown in FIG. 9, the cross cursor C is erased (step S22), and the selected figure is reset in the rectangular display by the broken line that has been displayed (step S22). S23), the routine from step S9 is repeatedly executed. In the soft menu displayed on the display 6, the corresponding function of the selected graphic is highlighted as shown in FIG.

As described above, the graphic drawing apparatus of this embodiment is
Starting point designating means for designating a starting point by operating the line drawing key 410, which comprises the routine of steps S2 to S4, end point designating means comprising step S5 for designating an end point on a diagonal line with the starting point, the starting point designating means and the end point. To move the start point or the end point, and the start point / end point movement switching means, which includes steps S20 and S21, for switching the start point and the end point instructed by the instruction means, and the rectangular drawing means, which includes step S8, for drawing a rectangle from the start point and the end point. Step S for enlarging / reducing the rectangle drawn by
12 to step S14, the drawing changing means, the figure storing means including the figure generating means 5 storing various figures to be displayed based on the drawn rectangle, and a predetermined figure is selected from the figure storing means. Step S2
It is provided with a figure selecting means comprising steps 2 to S23 and a selected figure drawing means comprising step S9 for drawing the figure selected by the figure selecting means in the area designated by the drawn rectangle. Therefore, step S8
A rectangle is drawn from a start point and an end point by a rectangle drawing means consisting of, and a predetermined figure is synthesized in the rectangle, and the selected figure is drawn. Since the selected figure is drawn so as to be constrained by the drawn rectangle, for example, even when drawing a circle, it is represented by a rectangle and its size is changed by the drawing change means for enlarging / reducing the rectangle. The horizontal and vertical width can be changed by moving the end point position, and the size of the circle can be changed without redrawing. This is not limited to a circle, but applies to all figures.

Therefore, even if many kinds of figures are facilitated, the rectangle drawing means draws a rectangle from the start point and the end point, and a predetermined figure is synthesized in the rectangle to draw the selected figure. , The drawing method is always constant even if the figures are different, and the figures can be drawn without practicing the drawing of many kinds of figures.

Moreover, the start point / end point movement switching means for switching the start point and the end point designated by the start point designating means and the end point designating means in reverse, enlarging / reducing a rectangular display with a broken line centered on the start point and displaying it. When the figures are combined and, as a result, the selected figure is scaled up or down, the start point and the end point can be replaced and the scaling can be performed, so that the center position of the figure can be changed. Further, the outline of the figure can be moved to any position. This makes it possible to facilitate the centering function of positioning the center of each of the plurality of figures on a specific line, and also to move the entire figure easily.

[0028]

The starting point designating means designates the starting point, and the ending point designating means designates the ending point on a diagonal line with the starting point.
The rectangle drawing means draws a rectangle from the start point and the end point, and if necessary, the start point end point movement switching means changes the start point and the end point, and the drawing change means moves the start point or the end point to draw the rectangle. Enlarge the rectangle
Perform a reduction, and select a predetermined figure from the figure storage means in which various figures are stored based on the drawn rectangle.
The figure selected by the figure selecting means is drawn in the area designated by the drawn rectangle.

Therefore, when drawing a figure, a rectangular area is designated, and the figure is drawn in the rectangle based on the large number of figures determined by enlargement / reduction of the rectangle and the figure type obtained by designating the figure type. Since all the prepared figures can be drawn by the unified operation of designating the rectangle and the type of the figure, the center position of the figure or the whole figure can be easily moved. Further, since all the figures can be drawn by the same operation method, it is not necessary to remember the operation for each figure again even if the types of figures increase.

[Brief description of drawings]

FIG. 1 is an overall block diagram showing a figure drawing apparatus in an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a key arrangement of a keyboard for instructing the drawing of the figure of FIG. 1, designating a start point / end point, designating a figure type, and switching designation of whether to move the start point or the end point.

FIG. 3 is a flowchart of a part of a graphic drawing process of the graphic drawing apparatus according to the embodiment of the present invention.

FIG. 4 is a flowchart of another portion of the graphic drawing processing of the graphic drawing apparatus according to the embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a display example of an input editing state of the graphic drawing apparatus according to the embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a display example of a state in which a line drawing key of the graphic drawing device in the embodiment of the present invention is pressed.

FIG. 7 is an explanatory diagram showing a display example in which the cross cursor is moved in the graphic drawing apparatus according to the embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a display example when a figure is confirmed by an execution key of the figure drawing device in the embodiment of the present invention.

FIG. 9 is an explanatory diagram showing a display example in which the line type of the graphic drawing device in one embodiment of the present invention is changed from a straight line to a circle.

FIG. 10 is an explanatory diagram showing a display example of a state in which the start point / end point movement switching is designated and the start point is moved in the graphic drawing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 1 Central processing unit 2 Random access memory 3 Rectangular generation unit 4 Keyboard 5 Graphic generation unit 6 Display

Front page continuation (72) Inventor Tetsuo Takeyama 2-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Inventor Fumihiro Nakagaki 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A start point designating means for designating a start point, an end point designating means for designating an end point on a diagonal line with the start point, and a start point end point for switching the start point and the end point designated by the start point designating means and the end point designating means in reverse. Movement switching means, rectangle drawing means for drawing a rectangle from the start point and end point, drawing change means for enlarging / reducing the drawn rectangle by moving the start point or end point, and various figures displayed based on the drawn rectangle A graphic storage unit that stores the graphic, a graphic selection unit that selects a predetermined graphic from the graphic storage unit, and a selected graphic drawing unit that draws the graphic selected by the graphic selection unit in an area designated by the drawn rectangle. A graphic drawing apparatus comprising: