JP3185708B2 - Drawing system and storage medium storing the drawing program - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a portrayal system, in particular, have the line drawing by inputting coordinates by using a pointing device such as a pen, to a drawing system to display the drawing data.

[0002]

2. Description of the Related Art A coordinate input device capable of detecting the position of a pen-shaped coordinate pointing means by means of a plate-like coordinate input means and inputting coordinate data is generally sold as a digitizer or a tablet.

[0003] By the way, the structure of a human arm has a direction of a line that is easy to draw and a direction of a line that is difficult to draw. When drawing on actual paper, rotate the paper to be drawn so that the direction of the line to be drawn is a direction that is easy for humans to draw. It has been done by moving.

[0004]

However, in the conventional coordinate input device, as described above, simply rotating the input device does not follow the screen, so that the actual drawing and display on the display device are not performed. Since the directions do not match, there is an inconvenience that handwriting input is difficult. Also,
While input devices are often installed horizontally on a desk, display devices often stand vertically on a desk, and the difference in angle between the input device and the display device is eliminated only when operating from the front. Therefore, moving a person with respect to the input device does not solve the problem.

Japanese Unexamined Patent Publication No. 6-35651 discloses a method of displaying an image by rotating the angle of a window in an information processing apparatus for performing handwriting input on a screen. However, there is no disclosure about handwriting input using a coordinate input device (tablet).

[0006]

SUMMARY OF THE INVENTION The present invention is to improve the disadvantages of the prior example relating, in particular, to enable you to draw without discomfort drawings
Providing a portrayal system, and an object.

[0007]

SUMMARY OF THE INVENTION Accordingly, a drawing according to the present invention is provided.
The drawing system uses coordinate input to input the coordinates of drawing data.
Device and the drawing data input to this coordinate input device.
Display device shown in FIG. And a coordinate input device
A coordinate designating means for designating coordinates, and the coordinate designating means
Coordinate input means for converting the coordinates designated by the above into coordinate data
And a rotation for supporting and rotating the coordinate input means.
The angle between the table, the turntable and the coordinate input means is detected.
Rotation angle detection means, and the rotation angle detection means
Between the rotation angle and the coordinate data input to the coordinate input means.
Output control means for outputting to a display device. Ma
The display device generates drawing data based on the coordinate data.
Control the output of the coordinate input device.
Table to rotate at an angle according to the rotation angle sent from the means
Display control means, and a drawing rotated by the display control means.
Display means for displaying image data.

[0008] Further, the display control means is provided with a coordinate input device.
The rotation angle sent from the output control means changes from the initial value.
Is not used, the drawing data with the initial value is retained.
Holding control unit and drawing data held by the holding control unit
And extract the display image from the display image.
A rotation control unit that rotates according to the rotation angle, and a coordinate input device
When the coordinate data is transmitted from the output control means of
Coordinates for the drawing data held by the
And a drawing processing unit that performs drawing processing by data.
It adopts the configuration described above. This achieves the purpose mentioned above.
It is what we are trying to accomplish.

The coordinate pointing means is, for example, a pen-shaped point
Adopting a switching device. For coordinate input means
When drawing with the coordinate designating means, the coordinate data is output controlled.
Output by control means. Also, the coordinate input means is rotated
Because the table is rotatable, the coordinate pointer
It is rotated in a direction in which drawing is easy using a step. Then,
The rotation angle detecting means detects the rotation angle of the coordinate input means.
I do. The output control means is controlled by the rotation angle detection means.
The detected rotation angle is output to the display device. This rotation angle
Displays drawing data drawn based on coordinate data
Because it becomes angle information, this display angle
When the drawing data is rotated and displayed, the rotation of the coordinate input
The rotation angle matches the rotation angle of the drawing data on the display device
Therefore, the drawing operation by the coordinate designating means becomes easier.
Also, rotation on the display device is not rotation of drawing data.
Physical rotation of the display means itself such as a monitor
It may be something.

In the drawing system according to the present invention, the display control means generates drawing data based on the coordinate data, and further generates the drawing data at an angle corresponding to the rotation angle transmitted from the output control means of the coordinate input device. In order to rotate, the display means displays the drawing data at an angle corresponding to the rotation angle of the coordinate input means.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In the present embodiment, a base that facilitates rotation of the coordinate input device and that can detect the rotation angle of the coordinate input device is installed below the coordinate input device. Based on the information on the rotation angle obtained from this, the data being drawn is subjected to coordinate transformation, rotated by the same angle, and then displayed on the display device. At this time, since it is an irreversible transformation to apply the coordinate transformation for rotation to the image data, the drawing with respect to the absolute coordinates of the tablet is stored in a memory different from that of the display device, and is used when displaying on the display device. Only it is desirable to display the result of performing the coordinate conversion based on the rotation angle from the base of the coordinate input device.

FIG. 1 is an explanatory diagram showing the configuration of the drawing system according to the present embodiment. The drawing system includes a coordinate input device 20 to which coordinates of drawing data are input, and a display device 30 for displaying the drawing data input to the coordinate input device 20.
And The coordinate input device 20 includes a coordinate pointing device (pen-type pointing device) 2 for specifying coordinates, a coordinate input device 1 for converting the coordinates specified by the pen-type pointing device 2 into coordinate data,
A turntable 3 for supporting and rotating the coordinate input means 1, a rotation angle detection means 3C (not shown) for detecting an angle between the turntable 3 and the coordinate input means 1, and a rotation angle detection means Rotation angle detected by 3C and coordinate input means 1
And output control means 13 for outputting the coordinate data input to the display device 30 to the display device 30.

A display control means for generating drawing data based on the coordinate data and rotating the drawing data at an angle corresponding to the rotation angle transmitted from the output control means 13 of the coordinate input device 20; And display means 6 for displaying the drawing data rotated by the display control unit 5. The display device 30 and the coordinate input device are connected by the data transfer cable 4.

The display control device 5 can be realized by a general computer (information processing device). in this case,
The display control device 5 includes a central processing unit (CPU), a memory, and the like. The display means 6 uses a CRT display or the like. The data input by the user with the pen-type pointing device 2 and the data of the rotation angle when the pen-type pointing device 2 is rotated using the turntable 3 are sent to the display control means 5 through the data transfer cable 4. . Data drawn by the pen-type pointing device 2 held by the display control means 5
Are output after being subjected to coordinate conversion according to the rotation angle from the display unit 6.

FIG. 2 is a block diagram showing a detailed configuration of the display control means 5 shown in FIG. As shown in FIG. 2, when the rotation angle transmitted from the output control means 13 of the coordinate input device changes from the initial value, the display control means 5 holds the drawing data at the initial value. A rotation control unit 10 for extracting a display image from the drawing data held by the holding control unit 7 and rotating the display image according to the rotation angle, and a coordinate from the output control unit 13 of the coordinate input device 20. And a drawing processing unit 8 that performs a drawing process using the coordinate data on the drawing data held by the holding control unit 7 when the data is transmitted.

The drawing processing section 8 performs a drawing process of adding a line thickness and a color to the coordinates based on the coordinate data, and superimposing the drawing based on the coordinate data on the original drawing data. When the rotation angle of the coordinate input means 1 changes, the holding control unit 7 stores the drawing data on which the drawing processing has been performed in the storage unit 1.
Hold at 1. Then, the rotation control unit controls the storage unit 11
Then, an image for display is extracted from the drawing data stored in, and the extracted display image is rotated. When coordinate data is input in a state where the rotated image is displayed, drawing processing is performed on the drawing data held by the holding control unit 7, and a display image is extracted from the drawing data again.

The displayed image is treated as integer coordinates after being decomposed into pixels. For example, even if horizontal drawing data is rotated and then returned to horizontal again, the coordinate calculation processing 20
Although the same drawing data cannot be restored because of digit loss at the time of coordinate calculation in 5, in the present embodiment, the drawing data in a horizontal state is held, and the actual drawing processing is performed on this drawing data. By extracting and generating display data from the drawing data each time, it is possible to perform the rotation display without lowering the accuracy of the final image.

Further, in response to a change in the contents of the drawing data due to the coordinates input from the coordinate input device 20, all the contents of the drawing result are subjected to the coordinate conversion in real time to generate the coordinate-converted drawing result. Since the load on the information processing apparatus is large, when the rotation angle α is constant, it is conceivable to perform a process of performing coordinate conversion of only a changed portion performed on the drawing result and writing the converted portion in the coordinate converted drawing result 206. . In this case, the rotation control unit 10 controls the coordinate input device 2
When the coordinate data is transmitted from the output control unit 13 of 0 and the rotation angle is the same as that of the previous drawing process using the coordinate data, a changed part of the drawing data that has been drawn by the drawing processing unit 8 is extracted for display. It is preferable to have a function of extracting a changed portion. Thereby, the time required for the rotation process can be reduced.

Further, the rotation control unit 10 includes the holding control unit 7
And a resolution setting function for setting the resolution of the display image based on the resolution of the display means 6 and the display magnification when extracting the display image from the drawing data held by the method. In the case where the drawing process itself is determined in relation to the resolution of the final printing device, the resolution of the display means is lower than the resolution of the printing device. Lower and extract. Then
The rotation process is sped up.

The display control unit 5 includes a coordinate input device 10
When the rotation angle transmitted from the output control means 13 changes, the discontinuous display control unit that controls the drawing data to be rotated at the rotation angle when the change in the rotation angle stops after a predetermined period of time has stopped. It is good to have. Then
Even in a system with a processing speed in which the display is delayed if the display image is rotated successively and continuously while the position adjustment is being performed by rotating the coordinate input means 1, even if the rotation of the coordinate input means is performed, By updating the display discontinuously, a system with good response can be provided.

Each function of the display control means shown in FIG. 2 can be realized by a program executed by a computer, and this program can be supplied by a storage medium such as a CD-ROM. In this case, the program
A command to receive the rotation angle transmitted from the coordinate input device,
It has a command to receive coordinate data transmitted from the coordinate input device, a command to generate drawing data based on the coordinate data, and a command to rotate the drawing data according to a rotation angle.

FIG. 3 shows data processing of the information processing apparatus of this embodiment. When the shape "A" is input to the coordinate input means 1 by the pen-type pointing device 2, first, coordinate data based on the coordinate axes that the coordinate input means 1 originally has is output to the display device 30, and the display control means 5, generates drawing data 5a based on their coordinate data. Then, when the rotation angle α is output from the coordinate input device 20, display data is extracted from the drawing data, and a rotation process is performed. The display data 5b is displayed on the display means 6. This facilitates drawing with the pen-type pointing device in a state where the coordinate input means 1 is tilted.

FIG. 4 is an explanatory diagram showing the configuration of the coordinate input device 20 shown in FIG. The coordinate input device 20 includes a plate-shaped coordinate input unit 1, a turntable 3 for rotating the coordinate input unit 1, a rotation angle detection unit 3C for detecting an angle formed by the turntable 3 and the coordinate input unit 1, and It has. Turntable 3
Has a supporting portion 3B and a rotating portion 3A rotatably mounted on the supporting portion. The rotating portion 3A supports the coordinate input means 1. Rotation angle detection means 3C and coordinate input means 1
Is output to the display device by the output control means 13.

FIG. 5 is a flowchart showing a processing example of this embodiment. First, the display control means 5 checks whether or not coordinate data has been input (S1). If the coordinate data has not been input, the input of the rotation angle is confirmed (S
4). On the other hand, when the coordinate data is input, the drawing data is read from the storage unit 11 (S2), and a drawing process based on the coordinate data is performed (S3). This drawing data is stored in the storage unit 11 again. When the rotation angle is input, it is checked whether the rotation angle has changed from the previous rotation angle (S5). On the other hand, if the rotation angle has not been input, the process returns to the coordinate data confirmation processing.

If the rotation angle has changed, it is checked whether or not the changed rotation angle has stopped for a certain period of time (S6). When the coordinate input means is rotating and its rotation angle is changing, in this example, the display is not updated, so that it waits for a fixed period of time. When the angle of the coordinate input means is determined by the user and the rotation angle is stationary for a certain period of time, the drawing data is read from the storage unit 11, and a display image of the entire drawing data is generated (S7).

If the rotation angle has not changed, the portion changed by inputting the coordinate data is specified. If there is a changed portion, a display image is generated for the changed portion (S).
8). Then, the whole or a part of the display data is rotated according to the rotation angle of the coordinate input means (S9), and the display is overwritten (S10). As described above, by repeatedly performing the processing based on the coordinate data input or the rotation angle input, the drawing processing based on the coordinate input is performed. Save the drawing data as a file,
When printing, drawing data in the storage unit 11 in which distortion has not occurred due to the rotation process is used.

As described above, according to this embodiment, coordinates can be input in a direction that is easy for humans to write.
It can be done naturally, just like drawing on paper.

[0028]

According to the present invention, the output control means draws the rotation angle detected by the rotation angle detection means on the display device based on the coordinate data. In order to output the data as display angle information to the display device, and in order for the display control means to rotate the drawing data at an angle corresponding to the rotation angle transmitted from the output control means, the display means includes a coordinate input unit. The drawing data can be displayed at an angle corresponding to the rotation angle, and therefore, when drawing while tilting the coordinate input means in a direction easy to draw with the coordinate designating means, it is possible to display the tilted drawing data. , Therefore, it is possible to provide an excellent portrayal system unprecedented that can be drawn without discomfort drawings.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a configuration of an embodiment according to the present invention.

FIG. 2 is a block diagram showing a detailed configuration of a display control unit shown in FIG.

3 is a right explanatory diagram illustrating an example of a drawing process and a display process in the configuration illustrated in FIG. 1;

FIG. 4 is an explanatory diagram illustrating a configuration of the coordinate input device illustrated in FIG. 1;

FIG. 5 is a flowchart illustrating an example of a drawing process and a display process of the drawing system illustrated in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 coordinate input means 2 coordinate indicating means (pen-type pointing device) 3 turntable 3C rotation angle detecting means 4 cable 5 display control means 6 display means

Claims (5)

(57) [Claims] (1) Coordinate input where coordinates of drawing data are input
Device and the drawing data input to this coordinate input device.
A display system comprising: a display device for displaying the coordinate input device;
Convert the coordinates specified by this coordinate specifying means into coordinate data
Input means for inputting the coordinates and inputting the coordinatesmeansTosupportThen
A turntable for rotating the turntable and the coordinate inputmeans
Rotation angle detecting means for detecting the angle between
The rotation angle detected by the output means and the coordinate input means.
Output for outputting the input coordinate data to the display device
Control means, wherein the display device generates drawing data based on the coordinate data.
As well as the drawing data of the coordinate input device.
Rotate at an angle according to the rotation angle sent from the output control means
Display control means for controlling the displaymeansRotated by
Display means for displaying the rendered drawing data.e,  The display control means is an output control means of the coordinate input device.
When the rotation angle transmitted from the
A holding control unit for holding the drawing data at the initial value,
From the drawing data held by the holding control unit,
Extract the image and change the display image according to the rotation angle.
A rotation control unit for rotating the input device and an output control of the coordinate input device.
When coordinate data is transmitted from the control means,
The coordinate data for the drawing data held by
And a drawing processing unit for performing drawing processing by the
SignDrawingPainting system. 2. When the rotation control unit receives the coordinate data from the output control means of the coordinate input device and has the same rotation angle as the previous drawing process based on the coordinate data, the drawing processing unit draws the image. 2. The drawing system according to claim 1, further comprising a changed part extracting function of extracting a changed part of the processed drawing data for display. 3. The display control method according to claim 2, wherein the rotation control unit sets a resolution of the display image based on a resolution of the display unit and a display magnification when extracting the display image from the drawing data held by the holding control unit. The drawing system according to claim 1 , further comprising a resolution setting function. (4) Coordinate input where coordinates of drawing data are input
Device and the drawing data input to this coordinate input device.
A display system comprising: a display device for displaying the coordinate input device;
Convert the coordinates specified by this coordinate specifying means into coordinate data
Input means for inputting the coordinates and inputting the coordinatesmeansTosupportThen
A turntable for rotating the turntable and the coordinate inputmeans
Rotation angle detecting means for detecting the angle between
The rotation angle detected by the output means and the coordinate input means.
Output for outputting the input coordinate data to the display device
Control means, wherein the display device generates drawing data based on the coordinate data.
As well as the drawing data of the coordinate input device.
Rotate at an angle according to the rotation angle sent from the output control means
Display control means for causing the display to rotate.
Display means for displaying the rendered drawing data.e,  The display controlmeansOutput control means of the coordinate input device
When the rotation angle transmitted from
Before the change in the rotation angle stops for a certain period of time
A disconnection that controls the drawing data to rotate at the rotation angle
Connection display control unit.DrawingPainting system. A command for receiving a rotation angle 5. A transmitted from the coordinate input device, a command to receive the coordinate data transmitted from the coordinate input device, a command to generate a drawing data based on the coordinate data, A storage medium storing a drawing program having a command to rotate the drawing data according to the rotation angle.