JPH0636185B2 - How to pick a shape - Google Patents

Description

The present invention relates to a method of picking a graphic displayed on a display.

[Conventional technology]

When processing one of the graphics displayed on the display, it is necessary to first designate the graphics to be processed with the cursor, search for the graphics at the specified position (pick), and select the corresponding graphics data from the memory. . The conventional method of this graphic pick is, for example, JDFOLE
Y) Others, "Computer Graphics", translated by Atsumi Imamiya, pp. 209-212. FIG. 2 is a flow chart showing this conventional method. First, in step 201, the position coordinates on the screen designated by the cursor are fetched. In the next step 202, the figure existing at this position is searched (picked). The first concrete method is to calculate the existence area of each figure and include the figure pick coordinates. Check if there is any, and if more than one figure is the picked figure, the figure with the closest distance is selected. The second method is
It was to select the first figure that passes the specified figure pick coordinates. When the processing of the graphic pick by any one of these is completed, it is checked in step 203 whether or not the corresponding graphic is found. If not, the process proceeds to step 205. When a corresponding figure is found, the figure is echoed to notify the operator of the picked figure. The operator ends the picking work if the echoed figure is the intended one, but if it is not the intended figure (or if the corresponding figure is not found in step 203), the cursor position is input again and the step is performed. 201
Go back or instruct to enlarge the figure. When this enlargement instruction is given, the enlargement processing is performed in step 206 and the enlarged figure is displayed on the display. Therefore, the cursor position is corrected in step 205 and the process returns to step 201.

[Problems to be solved by the invention]

The above-mentioned conventional graphic picking method, that is, the processing method in step 202 of FIG. 2 has the following problems. First, in the first method, when multiple figures are picked,
The distance between each figure and the figure pick coordinates must be calculated. However, especially when the figure is a curve, the calculation content becomes complicated and the pick responsiveness deteriorates. In particular, it could not be applied to the dynamic picking process in which the picked-up figures are moved one after another and the picked-up figure at each position is echo-displayed. Further, in the second method, even when a plurality of figures are the objects to be picked, the figure which is the object to be picked first is selected, so that the responsiveness is good. That is, in this method, as shown in the operation flow of FIG. 3, when the figure selected by the pick coordinate input (step 301) is the target (step 302), the pick completion button is pressed. Press to end the operation (step 305). However, when the figure to be selected is not echo-displayed because it is the second or subsequent pick target figure, the screen enlargement is instructed (step 303. This is not always done), and the figure pick coordinates are again instructed ( Return to step 304) and step 302. As described above, there is a problem that many operations are required for the cursor operation and the instruction to enlarge the graphic display. Also, in the case of a figure with a very large amount of data, the display is crowded, so there is little area where only the figure the operator wants to select exists, and in the worst case it may not be possible to pick that figure. Ivy.

An object of the present invention is to provide a method of picking a graphic which has a quick response and good operability.

[Means for solving problems]

In the figure picking method of picking an intended figure from a plurality of figures displayed on the screen,
When the cursor is moved into the area of the intended figure by the mouse operation and the figure is designated, the designated coordinates are fetched and the memory storing the plurality of figure data displayed on the screen is searched in the order of addresses. The figure including the specified coordinates is obtained by echoing the figure as a candidate for the figure to be picked, the address of the figure is set to the pointer, and when the pick completion button assigned to the mouse button is pressed, When the figure pick process is completed and the next candidate designation button assigned to the mouse button is pressed, the memory is searched from an address after the address set in the pointer, and the next coordinate including the designated coordinates is searched. When the figure is obtained, the figure is echoed as a candidate for the figure to be picked, and the address of the figure is added to the point. Set the data, by repeating the address set to the search pointer shapes by pressing of the next candidate command button until the pick complete button fully graphic is searched in the memory are depressed, it is achieved.

[Action]

The process of retrieving the figure including the figure from the figure pick coordinates can be performed at high speed because distance calculation is not used. Also, when the first searched figure is not the one the operator wants to select, the operation is to press the button that indicates the next candidate without moving the cursor position, so if you place this button on the mouse button, your finger The operation is simple and can be performed only once. The time required for the operator to complete picking may be, at worst, the time required to search all the figure data memories at one time and the time for pressing the button by the number of pick target figures.

Further, the pick completion button is assigned to the mouse, and when the corresponding figure is picked, this button is used to input the operator's intention of selection, so that the operator can operate according to his or her own will, thus improving the usability.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail. FIG. 4 shows an example of a hardware configuration for implementing the method of the present invention. The graphic data 1, 2, ... Stored in the graphic data memory 3 are read by the graphic controller 1 and displayed on the graphic display 2. on the other hand,
The operator can move the cursor to the figure to be selected from the displayed figures by operating the cursor position input device 4, and can designate the figure pick coordinates. This is accepted by the graphic control position 1 and graphic picking is performed as follows.

FIG. 1 is a flow chart showing an embodiment of the method of the present invention, which is executed by the graphic controller 1. First, in step 101, the input figure pick coordinate is taken in, step 102 returns the pointer indicating the search end position to the beginning, and step 103 searches the figure including the figure pick coordinate. If this is not found (step 104), it jumps to step 107, but if it is found, step 105 sets the address at that time to a pointer, step 106 echoes the corresponding figure, and step 107 selects it for the operator. Prompt whether or not. If the operator selects it, the figure picking completion button 5 (FIG. 4) is pressed to end the figure picking operation. On the contrary, when the operator does not select this, the next candidate instruction button 6 (FIG. 4) arranged at a place where it is easy to operate is pressed. Then, the graphic control device 1 restarts the search from the next figure shape data pointed to by the search final address pointer, and if found, repeats the same processing as the previous processing.

FIG. 5 shows an operating procedure of the operator in the above method of the present invention, that is, an operation flow. Enlargement of the screen display in the conventional FIG. 3 (step 3
03), the movement of the pick coordinates (step 304) is eliminated, and instead of these operations, only the operation of pressing the button of step 501 is required. Therefore, all the figure data in the figure data memory can be easily searched and the desired figure can be picked .

In this embodiment, the next candidate instruction button to be picked does not have to be an independent button. For example, a method of instructing the figure pick coordinates twice at the same position may be interpreted as a pick target next candidate instruction.

〔The invention's effect〕

According to the present invention, even if there are a plurality of figures to be picked, there is no need to move or enlarge the figure pick coordinates, and the figure pick coordinates are strictly on the figure desired by the operator. Since it does not need to be placed, there is an effect that the operability of the graphic pick is improved, and since complicated processing such as distance calculation is not required, the responsiveness is not impaired.

[Brief description of drawings]

FIG. 1 is a flow chart of a processing procedure showing an embodiment of the present invention, FIG. 2 is a flow chart showing a procedure of a conventional pick method, and FIG. 3 is a diagram showing an operation flow in the conventional method, and FIG. Is a diagram showing a hardware configuration example of a system to which the present invention is applied, and FIG. 5 is a diagram showing an operation flow in the method of the present invention. 1 ... Graphic control device, 2 ... Graphic display, 3 ... Figure data memory, 4 ... Cursor position input device, 5 ... Figure pick completion button, 6 ... Next candidate instruction button, 7 ... Search final Address pointer.

Claims (1)

[Claims] 1. A figure picking method for picking an intended figure from a plurality of figures displayed on a screen, when the cursor is moved to the area of the intended figure by mouse operation and the figure is designated. , Fetching the designated coordinates, searching a memory storing a plurality of graphic data displayed on the screen in the order of addresses, obtaining a graphic including the designated coordinates, and echoing the graphic as a candidate for a pick target graphic. The address of the figure is set to the pointer, and when the pick completion button assigned to the mouse button is pressed, the figure picking process is terminated, and the next candidate designation button assigned to the mouse button is pressed. Then, the memory is searched from an address after the address set in the pointer, and the next figure including the specified coordinates is searched. When the figure is obtained, the figure is echoed as a candidate for the figure to be picked, the address of the figure is set in the pointer, and the figure search by pressing the next candidate instruction button and the address setting to the pointer are stored in the memory. The figure picking method, wherein all the figures are searched and repeated until the pick completion button is pressed.