JPH0821086B2 - Figure processing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a graphic processing method for scaling a displayed dot pattern for display.

[Prior art]

Conventionally, in this type of device, it has been considered that a vector font is used to freely scale a figure or character to an arbitrary size, deform a rectangular parallelepiped or the like, and output. However, it has not been considered to display a certain size pattern once and then arbitrarily transform it into a desired size by a simple operation.

In addition, an ordinary word processor can only make extremely fixed transformations such as quadruple and vertical doubling.

[Problems that the invention is trying to solve]

Therefore, when changing the existing character data to an arbitrary size, it has to be set after anticipating a scaling ratio corresponding to the desired size.

An example is shown. As shown in FIG. 5A, it is assumed that 64-point character data is written in the rectangle. This is shown in FIG. 5E.
When the rectangle is reduced as shown in, it is expected that the scaling factor of the character data contained in this rectangle will be 0.80 times in both the x-axis direction and the y-axis direction. Similarly, as shown in FIG. 5C, the values are reset to 0.70 times in both the x-axis direction and the y-axis direction. However, since this is too small on the contrary, as shown in FIG. 5D, the x-axis direction and the y-axis direction were reset to 0.75 times, and finally the character data of the desired size was obtained. Although not shown in the figure, each time such an operation is performed, a plurality of operations such as calling a window for setting a magnification and inputting a magnification with a key are required.

As described above, in order to scale the character data to an arbitrary size, the character data of the desired size could not be obtained without repeating trial and error.

〔Purpose〕

In view of the above points, it is an object of the present invention to provide a graphic processing method with improved operability in setting a scaling factor when a displayed dot pattern is scaled and displayed.

〔Example〕

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Further, in this embodiment, an example applied to an image processing apparatus will be described.

FIG. 1 is an overall block diagram of the image processing apparatus of this embodiment. In the present invention, an image including characters and figures is called an image.

In the figure, reference numeral 1 denotes a CPU that controls the entire apparatus, and includes a ROM 1a that internally stores a program according to the flowchart of FIG. 2 described later, and a RAM 1b that is used as a work area of the CPU 1. Reference numeral 2 is a keyboard used when inputting characters, and is also used when designating character size conversion. Reference numeral 3 is a pointing ink device for moving an arrow used for instructing a scaling factor or the like on the display device 5. 3a
Is a click button provided on the point ink device 3. Reference numeral 4 denotes a video RAM (hereinafter simply referred to as VRAM) that stores data to be displayed on the display device 5. 6
Is an image RAM that stores image data during image editing.
Reference numeral 7 is a vector font data storage unit. The vector fonts referred to in the present invention are similar to stroke fonts, contour fonts, outline fonts, etc., but specifically, character graphics are represented by multiple sampling points (○) as shown in FIG. So, actually (x, y) = 20
Coordinate points such as 0,100,300,140, ...
The vector font data storage unit is composed of data representing the start, stop, inner contour, outer contour, etc. of a curve and stores these data. Reference numeral 8 denotes a pattern generation unit that sets a scaling factor for scaling the character pattern output from the vector font data storage unit 7 according to an instruction parameter from the CPU 1 and generates and outputs a character pattern of a new character size. is there. The character size, scaling factor, etc. are stored. An output image buffer memory 9 stores an image to be output to the printer 10. In this embodiment, the printer 10 is a laser beam printer.

In the configuration of the present embodiment as described above, a process of scaling the input character string by a simple operation will be described according to the flow chart of FIG.

In step S1.1, it is determined whether the input is from the keyboard 2 or the pointing device 3. If not, it returns to S1.1 again. It is determined in S1.1 that there is input, and the process proceeds to S1.2, in which it is determined whether the input is a character correction command input. If NO, the process proceeds to S2, and if it is a process end key, the character input process ends. If not, the process proceeds to S3, the characters are input and displayed on the CRT in S4, and then the process returns to S1 and waits for input again. The character code and parameters relating to various edits input here are sequentially stored in the image RAM 6 shown in FIG.

If the input is performed by the key or pointing device in S1.1 and it is determined in S1.2 that the input is the character correction command input, the process proceeds to S5, and the point location by the pointing device is input by the input in S1. Determines if is on a string. Does nothing if not on string
Return to S1.1 and wait for input again.

If the character string is pointed at S5, it is considered that the scaling process of the character string in the character correction command is specified.
And a frame surrounding the character string as shown in FIG. 3A,
, Three-direction arrows are displayed.

Next, the process proceeds to S7 and waits for input again. To perform scaling,
Move the cursor in either direction while pressing the click button of the pointing device continuously with any of the arrows displayed in S6. (If the input is other than continuous pressing on the arrow, the process returns to S1.) The pattern generator 8 sets the scaling ratio based on the cursor movement amount and the scaling direction according to the direction of the selected arrow. .
Arrows in vertical direction (variation of y coordinate only, vertical scaling) Arrows in horizontal direction (scaling of x coordinate only, horizontal scaling) Arrows in both horizontal directions (both x coordinate and y coordinate) Scaling,
Vertical and horizontal scaling is performed evenly). Third concrete example
Figure A, Figure 3B, Figure 3C, Figure 3D, Figure 3E, and Figure 3
This is shown in Figures F and 3G.

FIG. 3A shows a hatching pattern. Click with a pointing device on a 64-point character string with two continuous shaded surfaces specified by the hatching pattern white and the hatching pattern black on the standard contour specified by gray By this, the character scaling process is activated, and a character frame and arrows in each direction are displayed.

In FIGS. 3B to 3G, the frame indicated by the alternate long and short dash line shows a frame enclosing the character data of FIG. 3A for comparison.

FIG. 3B shows the result of moving the cursor by the continuous input of the pointing device by the distance dh in the arrow direction on the arrow in FIG. 3A (the hatching pattern does not change). Height h = 800 (dot), moving distance dh =
Assuming 400 (dot), the scaling factor is in the y-axis direction {h + (dh × 2)} / h = {800+ (400 × 2)} / 800 = 2.
It becomes 0 (times). (Specific numerical values are shown in FIG. 3H.) Similarly, FIG. 3C is the result of moving the cursor dh (= −140dot) in the direction of the arrow in FIG. Is 0.65 times in the y-axis direction. (FIG. 3I) FIG. 3D shows the distance on the arrow in FIG. 3A in the direction of the arrow.
dw (= 600dot), Fig. 3E is on the arrow in the direction of the arrow
This is the result of moving the dw (= −210 dots) cursor, and the scaling factors are 2 times and 0.65 times in the x-axis direction when the width w = 1200 (dots), respectively (J and K in FIG. 3).

FIG. 3F shows the distance on the arrow in FIG. 3 in the direction of the arrow.
dh (= 400dot), dw (= 450dot) This is the result of moving the cursor. However, since the scaling is based on the vertical direction, dw is ignored and the scaling factor is x from dh (= 400dot). It is doubled in both the axial and y-axis directions. Also, in FIG. 3G, dh (= -140dot) and dw (= -180dot) are shown on the arrow in the direction of the arrow.
This is the result of moving the cursor. From dh (= -140dot), the scaling factor is 0.65 times in both the x-axis direction and the y-axis direction.
It should be noted that this may be based on the lateral magnification.

Note that the scaling process is performed until the continuous depression input in S7 in FIG. 2 is completed (when the click button is released) (determined in S8), that is, the scaling is performed in S9 based on the cursor movement amount and movement direction. The parameters are set, pattern generation and scaling processing are performed in S10, and the processing of displaying on the CRT 9 is continuously repeated in S11.

If it is determined in S8 that the continuous pressing has ended, the scaling processing ends, in S12, the display of the character frame and the arrow ends, and the process returns to S1. The result of the above-described deformation (numerical values shown in FIGS. 3H to 3M) is reflected in the pattern generation unit 8 shown in FIG. 1 and automatically updated. Needless to say, the original data is also saved separately.

In the above embodiment, the scaling of only the character string has been described, but it is also possible to group the figures with other rectangles so that the scaling processing can be performed at the same rate at the same time.

The main idea of this proposal is that the character size must be specified with a numerical value for each target character string, but after displaying this on a CRT etc., a pure graphical interactive procedure is performed. Therefore, it is possible to specify sensuously (for example, enlarging or reducing the frame of a character string) regardless of numbers.
Further, the sensuously scaled data can also be reflected in the numerical value, and the scaled data as shown in FIGS. 3H to 3L may be displayed in real time in a window or the like near the character graphic. .

The present invention may be applied to a system composed of a plurality of devices or may be applied to a single device.
In addition, the device of the system may be partially changed, or may be applied to another system or device via the LAN.

As described above, according to the present example, by making it possible to easily and continuously set the parameters required for performing the scaling, various transformations (for example, italic, fill, white It is possible to quickly output a graphic character size of an arbitrary size without impairing a blank, a hatching pattern, a shadow, etc.). And
This makes it possible to easily set the scaling factor and scaling direction of character data using vector font data using a pointing device, etc., so that the scaling factor of character data can be handled as a graphic without trial and error. It is possible to set intuitively with the concept of scaling of a figure.

〔effect〕

As described above in detail, according to the present invention, it is possible to provide a graphic processing method with improved operability at the time of setting a scaling factor when scaling and displaying a displayed dot pattern. became.

[Brief description of drawings]

FIG. 1 is a block diagram of the present embodiment, and FIG. 2 is a flow chart relating to scaling of character data, and FIG.
A to FIG. 3M are diagrams showing an example in which actual scaling is performed, FIG. 4 is an explanatory diagram of a vector font, and FIGS. 5A to 5E are explanatory diagrams of a conventional example. In the figure 1 ... CPU, 1a ... ROM, 1b ... RAM 2 ... Keyboard 3 ... Pointing device 4 ... VRAM 5 ... Display device 6 ... Image RAM 7 ... Vector font data storage 8 ... … Pattern generator 9 …… Output image buffer memory 10 …… Printer

Front page continued (72) Inventor Masaki Hamada 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Akifumi Shirasaka 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-58-117030 (JP, A) JP-A-59-163666 (JP, A)

Claims (3)

[Claims] 1. A step of displaying a dot pattern developed based on vector data on a display means, and a zooming direction of the dot pattern corresponding to an area symbol indicating an area of the dot pattern displayed on the display means. Displaying a designated direction symbol, and setting a scaling factor of vector data corresponding to the dot pattern displayed on the display means in accordance with the amount of movement of the cursor along the scaling direction designated by the direction symbol. And a step of displaying on the display means a dot pattern developed on the basis of vector data scaled by the set scaling ratio. 2. The directional symbol is an arrow designating vertical scaling, an arrow designating horizontal scaling, and an arrow designating uniform scaling in both vertical and horizontal directions. The graphic processing method according to claim 1. 3. The graphic processing method according to claim 1, wherein the vector data is coordinate point data representing a contour of a character.