JPH04340668A - Display device - Google Patents

Abstract

PURPOSE:To reduce the number of times for calculating a drawing range by using nonexistent normalization coordinate for the scaling of drawing, and applying this as an attribute. CONSTITUTION:This device is provided with a segment memory 12 to store drawing data for the display on a display screen in the form of the normalization coordinate, a coordinate transformation part 13 to transform the drawing data read out of the segment memory to physical coordinate, a drawing part 14 to draw the drawing data on a display part based on the physical coordinate outputted from the coordinate transformation part, a dividing means 18 to divide the normalized coordinates into the prescribed drawing ranges, and an attribute storage means 20 to discriminate which drawing range of the drawing data belong to according to the physical coordinate of the drawing data and to store the coordinates as the attribute of the drawing data.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to display devices, and more particularly to pick processing of display devices.

0002

2. Description of the Related Art FIG. 6 is a block diagram showing the system configuration of a conventional display device. In the figure, 11 is a CPU that controls the display device; 12 is a CPU 11;
13 is a coordinate conversion unit that converts the drawing data of the segment memory 12, 14 is a drawing unit that draws the converted data, and 15 is a display memory that displays the drawing data. Note that 16 indicates a data line. FIG. 7 is a diagram showing a procedure for converting drawing data in the coordinate conversion section 13, and generally the normalized coordinates 21 are the logical coordinates 22.
and mapped to physical coordinates 23.

Next, the operation will be explained using FIGS. 9 and 10. FIG. 9 is a flowchart showing drawing and pick pre-processing. First, in S1, the CPU 11 stores drawing data and attribute data in the segment memory 12, and in S2
Then, the coordinate conversion unit 13 reads out the drawing data (normalized coordinates 21) from the segment memory 12 in units of segments. Next, in S3, the physical coordinates 23 converted by the coordinate conversion unit 13 are output to the drawing unit 14, and in S4b, the drawing range of the physical coordinates 23 is converted to the drawing range of the logical coordinates 21 in segment units, and Find the drawing position, and in S5b,
It is set as a segment attribute (logical coordinate drawing range) according to the 16 division information of logical coordinates shown in FIG. Next, although not shown, the physical coordinates 23 output to the drawing unit 14 are drawn on the display memory 15, thereby completing drawing and pick preprocessing. Next, the flowchart in FIG. 10 shows the pick process. In S11 and S12b, the pick target range 24 is set in the coordinate conversion unit 13 at the time of picking, and at the same time, the position of the pick target range 24 in the logical coordinates 22 in the logical coordinate division shown in FIG. 8 is determined, and in S13 and S14, it is drawn. In step S15, the coordinate transformation unit 1 converts only the segments existing in the logical coordinate division range to be picked.
3 and the drawing unit 14, and if there is a pick hit in S16, the hit information is notified to the CPU in S17.

Next, referring back to FIG. 7, a specific example of segment data will be explained. Here, the drawing data of segment number 1 is ○, the drawing data of segment number 2 is △, the drawing data of segment number 3 is x,
Let the drawing data of segment number 4 be □. Figure 7(a)
shows the conversion procedure from the normalized coordinates 21 to the physical coordinates 23 for these four segments of drawing data ○△×□, and as a result, the logic set in each segment attribute of the segment memory 12 The coordinate information divided into 16 is as follows. Segment number 1 Drawing data ○ Segment attribute 1, 2, 5, 6 Segment number 2
Drawing data △ Segment attributes 3, 4, 7,
8 Segment number 3 Drawing data × Segment attribute 9, 10, 13, 14 Segment number 4 Drawing data □ Segment attribute 11, 1
2, 15, 16 For example, the segment attributes of segment number 1 are 1, 2, 5, 6, which means that the drawing data ○ is the logical coordinate drawing of 1, 2, 5, and 6 out of 16 logical coordinate divisions. It shows that it exists within the range.

Next, the case of expanding segment data will be explained using FIG. 7(b). FIG. 7(b) shows the conversion procedure from normalized coordinates 21 to physical coordinates 23 when △ of segment number 2 is enlarged, and shows the case where the drawing data of △ is enlarged twice in height and width. There is. At this time, the segment attribute of segment number 2 in the segment memory 12 is as follows. Segment number 2 Drawing data Δ Segment attributes 6, 7, 9, 10, 11, 12 As described above, by enlarging, the segment attributes of segment number 2 become different. Also, on the contrary,
Normally, the segment attributes will differ even when downsizing.

[0006] Next, the case of displaying using a multi-window will be explained. Although not shown, the △ shown in FIG. 7(a)
When the enlarged Δ shown in FIG. In this example, the case where segment attribute 1 is the window for FIG. 7(a) and segment attribute 2 is the window for FIG. 7(b), and there are a maximum of two segment attributes, is as follows. Segment number 1 Drawing data ○
Segment attribute 1 1, 2, 5, 6

Segment attribute 2 None Segment number 2 Drawing data △ Segment attribute 1 3, 4, 7, 8

Segment attribute 2 6, 7, 9, 1


0, 11, 12 Segment number 3 Drawing data × Segment attribute 1 9, 10
,13

,14

Segment attribute 2 None Segment number 4 Drawing data □ Segment attribute 1
11,12,1

5,16

Segment attribute 2 None

0
007]

[Problems to be Solved by the Invention] Since the conventional display device is configured as described above, it is necessary to calculate the drawing range again when enlarging/reducing segment data, resulting in a decrease in segment redrawing performance. There was a problem. Furthermore, when displaying one segment data using multiple windows, it is necessary to have segment attributes within the segment for multiple windows, which poses a problem of increased segment memory. This invention was made in order to solve the above-mentioned problems.It reduces the calculation of the drawing range, and when used in multi-windows, the drawing range setting area in the segment does not exist in the number of multi-windows. It is intended to do so.

[0008]

[Means for Solving the Problems] A display device according to a first aspect of the invention stores drawing range information in normalized coordinates, and has the following elements. (a) A memory that stores drawing data to be displayed on the display screen in normalized coordinates, (b) A coordinate conversion section that converts the drawing data read from the memory into physical coordinates, and (c) Output from the coordinate conversion section. (d) a dividing unit that divides the normalized coordinates into predetermined drawing ranges; (e) a drawing unit that draws the drawing data on the display unit based on the physical coordinates of the drawing data; (e) a dividing unit that divides the normalized coordinates into a predetermined drawing range; Attribute storage means for determining which drawing range the drawing data belongs to and storing it as an attribute of the drawing data.

A display device according to a second aspect of the invention performs pick processing using normalized coordinates, and has the following elements. (a) normalized coordinates divided into predetermined drawing ranges; (b) memory for storing drawing data and the drawing range of the normalized coordinates as its attributes;
c) When an arbitrary position on the display screen is picked, the drawing range of the corresponding normalized coordinates is calculated from the picked physical coordinates, and compared with the attributes stored in the memory above, the drawing targeted for the pick is determined. Pick means to search for data.

0010

[Operation] The first invention differs from the conventional method in that normalized coordinates are used. Previously, logical coordinates were used that changed depending on the size of the zoom or the size of the window.
Although it was necessary to recalculate the drawing range when scaling down and to create multiple attribute areas, normalized coordinates normally exist in the range of 0,0 to 1,1, and scaling up/down of drawing data is difficult for multiple windows. Even if there is, there is no change in the position of the drawing data at these normalized coordinates. Therefore, the normalized coordinates are divided into arbitrary drawing ranges by a dividing means and used in place of the conventional drawing range of logical coordinates.

[0011] A second invention is a display device that uses normalized coordinates for pick processing, which has normalized coordinates divided into predetermined drawing ranges, and a pick means that uses normalized coordinates for picking processing based on the physical coordinates of the picked drawing. , find the drawing range of the corresponding normalized coordinates, and search for drawing data that has that drawing range as an attribute. Therefore, even if there is enlarged display, reduced display, or window display, there is a one-to-one correspondence between drawing data and attributes, and search processing can be performed easily.

0012

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 11 is a CPU that controls the display device, 12 is a segment memory set by the CPU 11, 13 is a coordinate conversion unit that converts the drawing data of the segment memory 12, 14 is a drawing unit that draws the converted data, and 15 is a This is a display memory that draws drawing data. Note that 16 is a data line. Further, 17 is normalized coordinate division data that stores data for dividing normalized coordinates, and 18 is normalized coordinate division data 1 for storing normalized coordinates.
7, dividing means for dividing by 7; 19 for divided normalized coordinates; 20 for determining which drawing range of the divided normalized coordinates the drawing data belongs, and registering it as a segment attribute in segment memory 12; It is. Further, 10 is a pick means for performing pick processing.

FIG. 2 is a diagram showing a procedure for converting drawing data in the coordinate conversion unit 13. Generally, normalized coordinates 21 are converted to logical coordinates 22 and mapped to physical coordinates 23. FIG. 3 is a diagram showing a case where the normalized coordinates are divided into 16 by the normalized coordinate division data 17. For example, in this case, the normalized coordinate division data is as follows, which shows an example of dividing into four equal parts both vertically and horizontally. X direction 0.00 0.25 0.50 0.
75Y direction 0.00 0.25 0.50
0.75

Next, the operation will be explained with reference to FIGS. 4 and 5. In S1 of FIG. 4, the CPU 11 stores the drawing data and attribute data in the segment memory 12, and in S2 the coordinate transformation unit 13 stores the drawing data and attribute data in the segment memory 12.
reads the drawing data (normalized coordinates 21) from the segment memory 12 in segment units. Next, in S3, the physical coordinates 23 converted by the coordinate conversion unit 13 are output to the drawing unit 14, and in S4a, the drawing range of the physical coordinates 23 is converted to the drawing range of the normalized coordinates 21 in segment units, and the drawing range of the normalized coordinates 21 is The drawing position is obtained, and in S5a, it is set as a segment attribute (normalized coordinate drawing range) according to the 16 division information of normalized coordinates shown in FIG. Next, although not shown,
The physical coordinates 23 output to the drawing unit 14 are displayed in the memory 15.
The preprocessing for drawing and picking is completed by drawing on . This is repeated until the segment data ends in S6. Next, as shown in FIG. 5, in S11 and S12a, the pick target range 24 is set in the coordinate conversion unit 13 at the time of picking, and the pick target range 24 in normalized coordinates is calculated from the pick target range 24. Find the position in the normalized coordinate division, compare it with the segment attributes set at the time of drawing in S13 and S14, and select only the segments existing in the normalized coordinate division range to be picked in S15 by the coordinate transformation unit 13 and the drawing unit 1.
If the pick is processed in 4 and the pick is hit in S16,
In S17, the hit information is notified to the CPU.

Next, referring back to FIGS. 1 and 2, a specific example will be explained. As shown in Figure 1, segment number 1,
A specific example in which drawing data 2, 3, and 4 are respectively ○△×□ will be described. The normalized coordinates 21 in FIG. 2 are divided into 16 portions by the division shown in FIG.
In the normalized coordinates 21, ○△×□ is assumed to exist at the position indicated by the dotted line in the figure. Cut this out like logical screen A25 and use physical coordinates 23 as window A27.
When drawing to , each segment attribute will be as follows. Segment number 1 Drawing data ○ Segment attribute 6 Segment number 2 Drawing data
△ Segment attribute 6, 7 Segment number 3 Drawing data × Segment attribute 10
Segment number 4 Drawing data □ Segment attribute 10, 11

Next, the case where this is reduced and displayed as a separate window B28 will be explained. Convert all of the normalized coordinates 21 to the logical screen B26,
Even when this is displayed on the physical coordinates 23 as a window B28, the segment attributes of ○△×□ remain the same and do not change. In other words, even if you zoom out or change the window ○
The segment attribute for is 6, and the segment attributes for Δ are 6 and 7. Similarly, the same applies to × and □. Although not shown, the segment attributes do not change even when enlarging. Therefore, segment attributes do not need to be calculated again even when enlarged, reduced, or displayed in a different window, and there is no need to have multiple regions for each window.

To explain the case of windows in other words, when configuring multiple windows using the same segment data as shown in FIG. 2, it is only necessary to perform coordinate transformation and drawing on the logical screen B26, and
When picking for window A2, use the segment attributes obtained when drawing window A27.
It can be picked like 7.

Example 2. In this example, the normalized coordinates are set to 1
Although the drawing area is set by dividing into six, the same effect can be obtained by having a drawing area for each segment and comparing it with the pick range. Further, in this embodiment, a drawing area is provided for each segment, but if the inside of a segment can be subdivided, a drawing area may be provided for each subdivision.

Example 3. Further, in this embodiment, the normalized coordinates are divided into 16 equal parts, but the division width is arbitrary and there is no need to divide them into equal parts. Furthermore, the number of divisions does not have to be 16 and may be any number of divisions. These divisions are stored as normalized coordinate division data 17 for reference.

[0020]

As described above, according to the present invention, since the drawing range is stored in normalized coordinates, the calculation of the drawing range at the time of display is reduced, and multi-window display using the same drawing data is possible. This has the effect of obtaining time display information that does not exist in the multi-window number of sheets.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a display device according to an embodiment of the present invention.

FIG. 2 is a capture explanatory diagram of an embodiment of the present invention.

FIG. 3 is a division diagram of normalized coordinates.

FIG. 4 is a flowchart diagram of an embodiment of the first invention.

FIG. 5 is a flowchart diagram of an embodiment of the second invention.

FIG. 6 is a block diagram of a conventional display device.

FIG. 7 is an explanatory diagram of capture in a conventional example.

FIG. 8 is a division diagram of logical coordinates.

FIG. 9 is a flowchart of a conventional processing method.

FIG. 10 is a flowchart of a conventional processing method.

[Explanation of symbols]

10 Pick means 11 CPU 12 Segment memory 13 Coordinate conversion section 14 Drawing section 15 Display memory 16 Data line 17 Normalized coordinate division data 18.Dividing means 19 Divided normalized coordinates 20 Attribute storage means 21 Normalized coordinates 22 Logical coordinates 23 Physical coordinates 24 Pick target range

Claims (2)

[Claims] Claim 1: A display device having the following elements: (a) a memory for storing drawing data to be displayed on a display screen in normalized coordinates; (b) converting drawing data read from the memory into physical coordinates; a coordinate conversion unit; (c) a drawing unit that draws drawing data on a display unit based on the physical coordinates output from the coordinate conversion unit; (d) a dividing unit that divides the normalized coordinates into predetermined drawing ranges; (e) Attribute storage means that determines which drawing range of normalized coordinates the drawing data belongs to from the physical coordinates of the drawing data and stores it as an attribute of the drawing data. 2. A display device having the following elements: (a) normalized coordinates divided into predetermined drawing ranges; (b)
(c) When an arbitrary position on the display screen is picked, the drawing range of the corresponding normalized coordinates is determined from the picked physical coordinates; A pick means for searching drawing data to be picked by comparing it with the attributes stored in the memory.