JPS6298422A - Operator guide displaying system - Google Patents

Abstract

PURPOSE:To guide a fact that a grid lattice point is in the nearest position to a cursor display position, by executing a symbol display to the grid lattice point existing in this area, when a cursor has entered into this area, and erasing the symbol display, when the cursor has been shifted from this area. CONSTITUTION:A grid lattice point area control table stores a symbol display code displayed on a grid lattice point, and a distance in the direction (x) and the direction (y) centering around the grid lattice point. This grid lattice point area control table is inputted together with grid display use information through an operator, and based on these information, a lattice point area is calculated by a cursor displaying timing. An angle of a grid, and a coordinate of a lattice point of the grid are derived by the grid display use information. In this way, the nearest grid lattice point to a cursor display position is known at a glance.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an operator guide display method suitable for operator input operations that are important as a man-machine interface in a graphics processing system.

[Background of the invention]

FIG. 3 shows an example of the configuration of a graphic display device.

In FIG. 3, a processing device 1, a main memory 2 in which a route graphic processing program is stored, a segment buffer memory 3 that stores graphic elements displayed on the screen of a display in a command format, and graphic elements in the segment buffer memory. A graphics processor 4 that takes in and analyzes commands and develops figures on the display screen 1; a frame memory 5 whose number corresponds to the number of display grid points on the display screen L (1=1); and a CRT monitor as a display device. 6
, a doublet 8 and a keyboard 9, which are input devices, are connected to and controlled by a single processor 7.

The cursor display during double red input is moved on the flat table board of the doublet using a pen-shaped coordinate indicator called a stylus pen, and the coordinate values (positions) are input at any time according to the movement of the stylus pen. The coordinate system is converted into a coordinate system called a normalized device coordinate system, and a cursor is displayed on the display screen -1-. pick (selection)
The echo display is generally displayed at the cursor display position by pressing the stylus pen.

On the other hand, the cursor display during grid display is corrected and displayed so that it overlaps the grid grid point closest to the cursor display position, as shown in FIG.

The black dots in FIG. 4 represent the original cursor position before being corrected to overlap with the grid lattice points for convenience of explanation and are not actually displayed. The dotted plus symbol is the past cursor display after it has been corrected to overlap with the grid lattice points; in reality, only the current cursor (the + symbol in the figure) is displayed, and the previous cursor is erased. However, according to the conventional method shown in Figure 4, the cursor is corrected and displayed so that it overlaps the grid points, making it difficult to know the original cursor position. If the distance difference between the original cursor position and the grid grid points on all four sides is minute, there is a drawback that the wrong grid grid point may be picked due to deviation when pressing the stylus pen. Ta.

In addition, as a related technology, for example, Yokogawa-Hewlett-Packard Corporation's catalog HP-PRAFT
(Interactive automatic drafting system).

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a guide display of grid lattice points during a pick operation, with the aim of improving input operations as a man-machine interface in a graphic processing system having a graphic display device.

[Summary of the invention]

In the present invention, when the grid grid point closest to the cursor display position is used as the pick input coordinate value, an area that does not overlap with each other is defined that is smaller than the grid interval centered on the grid grid point, and the cursor is moved to this area. When the cursor enters the area, a symbol is displayed at the grid points that exist within this area, and when the cursor leaves this area, the symbol display disappears. This serves as a guide that the grid lattice point displayed as a symbol is the closest position to the cursor display position.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The grid lattice point area control table in FIG. 1 stores the symbol display code to be displayed at the grid lattice point, the X direction centered on the grid lattice point, and the distance in the X direction. This grid lattice point area control table is input via the operator together with conventional grid display information (this includes grid display area, grid spacing, grid angle, etc.), and the cursor display timing is determined based on this information. Calculate the grid point area with . The angle of the grid and the coordinates of the grid points are determined using conventional grid display information.

The frame of the lattice point area in FIG. 1 is not displayed on the diskless tube surface.

FIG. 2 is a flowchart illustrating the symbol display process. Box-1 is a conventional cursor display process. B
oX-2 is the distance in the X direction of the grid point area control table shown in FIG. 1, and BoX3 to B depending on whether the distance in the X direction has already been defined.

Check whether or not to execute the symbol display process of x-11. BoX-3 and 4 calculate the cursor display position and the grid point area by NDC converting the stylus pen input coordinate values, and determine whether the cursor display position is within the grid point area shown in FIG. Do, Box-5~Ro
X-9 is symbol display processing when the cursor is within the grid point area. BoX"10 and 11 are symbol display reset processing when the cursor leaves the grid lattice point area.

〔Effect of the invention〕

According to the present invention, there are the following effects.

(1) You can see at a glance the grid point closest to the cursor display position.

(2) The smaller the grid grid point area is defined, the more the cursor can be guided to move to the grid grid point.

[Brief explanation of drawings]

Figures 1 and 2 are explanatory views of one embodiment of the present invention. Figure 1 is a table that stores input information from the operator necessary for displaying symbols at grid points, and Figure 2 is a grid grid. A process flow diagram in which symbols are displayed at points; FIG. 3 is a configuration diagram showing examples of devices in the conventional and present invention; and FIG.
The figure is an explanatory diagram of an example of a conventional cursor display. 1... Processing device, 2... Main memory, 5... Frame memory, 8... Tuplelet, 9... Keyboard.

Claims (1)

[Claims] 1. A processing device, a graphics processor that performs graphic display processing, a frame memory, a CRT monitor, a segment buffer memory that registers and stores graphic element commands and graphic data shared between the processing device and the graphic processor, a tablet, A graphic display device consisting of an input/output processor that controls input/output devices such as a keyboard has a function that displays input coordinate values from the input device as a cursor on the screen of a CRT monitor, and displays the input coordinates on the grid grid point closest to the cursor position. In a graphic processing system equipped with a value correction function, an area of arbitrary size surrounding one grid grid point is defined, and when the cursor enters the area, the grid grid points within the area are displayed as symbols. An operator guide display method characterized in that the symbol display is erased when the cursor moves out of the area.