JPH02257368A - Graphic processor - Google Patents

Abstract

PURPOSE:To simplify the operation and to continuously input plural points to obtain a desired curve with an easy operation by not only selecting a curve but also using a point on this curve as the editing initial position at the time of editing a point string connection curve. CONSTITUTION:A curve data designating means 4 which designates already defined curve data, a designated curve data search means 5, a calculation means 6 which calculates the shortest intersection from an indicated position to a curve at the time of designating curve data, and a storage means 7 where this shortest intersection is stored as the first point of point string data are provided. A data input means 9 which continuously inputs point string data in an editing part following the obtained intersection, an editing point string data generating means 10 which synthesizes already inputted point string data and point string data in the editing part, and a curve data generating means 1 which generates curve data from edited point string data are provided. Thus, plural points can be inputted with respect to point string data inputted hereafter, and the operation is facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a graphic processing device in AD/CAM.

[Conventional technology]

Conventionally, as this type of device, for example, Japanese Patent Application Laid-Open No. 61-286
977, JP 58-144275, JP 60-15773, JP 62-180477
There are those shown in Japanese Patent Application Laid-open No. 191273/1983.

FIG. 5 is a processing block diagram similar to that shown in the above-mentioned Japanese Patent Application Laid-Open No. 82-180477, showing a method for editing a point series connection curve. In the figure, (1) is means for generating curve data from point sequence data from a point coordinate input device;
2) is point sequence data, (3) is curve data, (4) is means for specifying curve data to be edited, (5) is means for searching the specified curve from database (11),
(33) is a means for instructing a point to be edited out of the point sequence data to be edited, and (34) is an editing instructing means (3
3) is a means for searching the indicated point, (35) is a means for inputting the editing position, (37) is the input editing point, (
36) indicates means for replacing search points and editing points, (11) indicates a database, and (12) indicates means for storing edited curve data in the database.

Next, the operation of the graphic processing apparatus having the above configuration will be explained with reference to the flow of the point sequence editing method shown in FIG. 6 and the screen image of the point sequence editing method shown in FIG.

First, the curve data to be edited is designated by the curve data specifying means (4) Sl), and the designated curve searching means (5
) to search the database (11) for a curve to be edited (Sl). Both the searched curve data (3) and the point sequence data (2) constituting it are stored in the database (1).
1) Stored in temporary memory (S3),
(S4). Next, use the specifying means (33) to specify the points to be edited out of the point sequence data (2) constituting the curve (3) to be edited (S5), and search for the points to be edited using the specified point search means (34). S6) and stored (S7). next,
The editing position where the editing target point should be moved is input using the editing position input means (35) (S8) and stored (S9).
. The screen image of the shape at this time is, for example, as shown in Figure 7, where (a) is the image of step S1 in Figure 6 when the curve to be edited is specified, and (b) is the point sequence data that you want to edit. (C) is an image of step S5 in FIG. 6 when a point is specified, and (C) is an image of step S8 in FIG. 6 when the MA collection position is input.

Next, the replacing means (36) replaces the search point and the editing point to generate edited point sequence data (2) (510), and stores the point sequence data (2) (Sll). The generation means (1) generates curve data (3) from this point sequence data (2) (512), and stores the curve data (3) (512).
513).

An image of the generated curve data is shown in FIG. 7(d). Thereafter, in steps 514 and 515, the edited point sequence data and curve data are replaced with the unedited data in the database (11).

(Problems to be Solved by the Invention) As described above, when editing a point sequence connecting curve, a conventional graphic processing device first selects the curve data to be edited, performs a search, and then configures the curve data. It is necessary to specify the point to be edited in the point sequence data that is being used, and
There is a problem that only one point to be edited can be specified, and editing cannot be easily started from a position other than the point sequence data forming the curve to be edited.

In addition, in the prior art mentioned above, Japanese Patent Application Laid-Open No. 61-286
In the figure partial transformation method in the figure creation device according to Publication No. 977, after specifying two points to be transformed out of the point sequence of the defined figure, the data of the multiple existing point sequence between the two points is changed. In this modified method,
It was necessary to perform two operations: specifying in advance a point sequence shape to be edited, and then specifying two points in the point sequence shape to which partial deformation is to be applied. Furthermore, in the other prior art described above, when there is a plurality of dot array shapes on a CRT, when attempting to transform each of them, the point array forming the shape is first selected when the dot array shape is selected. The group was displayed and the constituent points could not be confirmed unless the shape was selected.

This invention was made to solve the above-mentioned problems, and it is possible to target multiple points to be partially deformed, so that when a partial deformation command is issued, the points displayed on the CRT can be changed. By generating and drawing constituent points of a column-connected shape, you can check the constituent points of what is drawn on the CRT without selecting a shape. By simply selecting the shape to be partially transformed, you can search for the curve to be edited and determine the editing start position without specifying the starting point or end point.
The editing start position can be set from a point other than the point sequence data that constitutes the target curve data, and as for the end point, if it is near the edit target curve, a point is generated on the edit target curve and the end position is set. It is an object of the present invention to provide a graphic processing device that can set an end position to the end of a curve to be edited if it is not in the vicinity.

(Means for Solving the Problems) A graphic processing device according to the present invention is a graphic processing device that edits curve data generated by connecting input data from a point coordinate input device in a series of points, which has already been defined. A curve data specifying means for specifying curve data, a search means for searching a database for the specified curve data, a calculating means for calculating the shortest point of intersection to the curve from a position specified when specifying the curve data, and the shortest point of intersection. a storage means for storing as the first point of the point sequence data of the part to be edited;
data input means for sequentially inputting point sequence data of the edited portion following the obtained intersection; and editing point sequence data generation means for generating editing point sequence data by composing the existing point sequence data and the point sequence data of the edited portion. , and curve data generation means for generating curve data from the edited point sequence data.

(Operation) In the graphic processing device of the present invention, at the same time as the curve to be edited is selected, the projection point on the target curve from the position coordinates specified at the time of selection is calculated, and this is used as the starting data of the point sequence of the editing part. , For the point sequence data to be input thereafter, multiple points can be input, and the points are replaced with the multiple points of the point sequence data forming the curve data before editing.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the configuration diagram of FIG. 1, in which the same parts as in FIG. 5 are denoted by the same reference numerals. 1st
In the figure, (1) is a curve data generation means for generating curve data from point sequence data, (2) is point sequence data, and (3)
is the curve data, (4) is the curve data specification means for specifying the curve data to be edited, (5) is the search means for searching the database for the specified curve data, and (6) is the position specified when specifying the curve data. (7) is a storage means that stores the intersection point as the first point of the edited part point sequence data; (8) is the point sequence data of the edited part; (9) is the edited part The point sequence data input means (10) generates point sequence data as an editing result by combining the pre-edited point sequence data (2) and the edited part point sequence data (7), and combines the pre-edited point sequence data (2) with means for replacing, (11)
(12) shows means for storing the edited curve data in the database.

Figure 2 shows the hardware configuration (13
) is C:PU, (14) is a mouse, (15) is a stylus pen, (16) is a tablet, (17) is a drafter type digitizer, (18) is a CRT, and (19) is a keyboard. Next, the operation of the above embodiment will be explained with reference to the flow diagram of FIG. 3 and the screen image of FIG. 4. First, as shown in step Sl in FIG. 3, a point string connection curve to be edited ( Curve data designation means (4) (coordinate designation devices (14) and (15) in FIG. 2)
), <16), (17) '). Part 1, te...
The designated curve search means (5) searches the database (l l) for the nearest white line to the designated position designated in step 51 (S2). The searched curve data (3) is stored in the temporary memory from the database together with the point sequence data (2) (53.S4). Next, Figure 4(a)
As shown in , the calculation means (6) calculates the shortest intersection between the specified position and the curve to be edited (3) so that the specified position when specifying the curve becomes the first point of the edited part point sequence data (8). (S5), and in step S6, the shortest intersection is stored in the edited partial point sequence data (8). At this time, A and B in Fig. 4(a)
, C, D, E.

Point sequence data (2) constituting the curve data for which F, G, H, I, and J were searched, a, bc, d, and e in Fig. 4(b)
, f, and g are the edited part point sequence data (8) A in Fig. 4 (C)
, a, b, c, d, e, f, I (or g), and J become the edited point sequence data (2).

The intersection calculated by the calculation means (6) is the fourth
As a in FIG. 2(b), it is first stored in the editing department point sequence data (8). Next, the data input means (9) sequentially inputs point sequence data that constitutes the desired curve of the yA collection (S
7). This is shown in Figure 4(b), c, d, e, f,
Corresponds to g. Next, the input point sequence data is stored in the edited portion point sequence data (8) (S8). When the process is completed up to step S8, the data stored in the MA cluster point sequence data 8) are a, b, c, d shown in FIG. 4(b).
, e, f, g.

Next, in step S9 of FIG. 3, edit point sequence data (8) (FIG. 4 a, b, c, d, e, f, g) and fixed point sequence data (2) (FIG. 4 A, B , C, D, E.

F, G, H, 1, J) are assembled into a synthetic IdA collection (Fig. 4A,
a, b, c, a, e, f, I (=g), J) Store as edited point sequence data (510). Next, edited curve data is generated from the edited point sequence data in step Sll and stored (512). The curve data after editing becomes as shown in FIG. 4(C). Next, step 513. S
In step 14, the edited point sequence data and curve data are replaced with the unedited point sequence data and curve data in the database.

[Effects of the Invention] As described above, according to the present invention, when editing a point series connection curve, when a curve is selected, the point is set as the initial editing position at the same time, which simplifies the operation. A desired curve can be obtained with simple operations using an editing method that allows point input.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of this invention, which is a processing block diagram of the point sequence connection curve editing method, Fig. 2 is a hardware configuration diagram of this embodiment, and Fig. 3 is a detailed flow and data of this embodiment. 4 is a screen image diagram of this embodiment, FIG. 5 is a configuration diagram of a conventional example, FIG. 6 is a detailed flow and data flow diagram of a conventional example, and FIG. 7 is a screen image diagram of a conventional example. l...Curve data generation means 4...Curve data specification means 5...Search means 6...Calculation means 7...Storage means 9...Point sequence data input means 10)...Editing point Column data generation means In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] In a graphic processing device that edits curve data generated by connecting input data from a point coordinate input device in a series of points, a curve data specifying means for specifying already defined curve data, and a database for storing the specified curve data. a calculating means for calculating the shortest point of intersection with the curve from a position specified when specifying the curve data; and a storage means for storing the shortest point of intersection as the first point of the point sequence data of the part to be edited. , a data input means for sequentially inputting point sequence data of the edited part following the obtained intersection point, and an edit point sequence data generation means for generating edit point sequence data by combining the existing point sequence data and the point sequence data of the edited part. and curve data generation means for generating curve data from edited point sequence data.