JPH05324740A - Drawing preparing and editing device - Google Patents

Abstract

PURPOSE:To facilitate selecting operation of optional hierarchic level in a hierarchized drawing. CONSTITUTION:Auxiliary drawings Sub1, Sub2, and Sub3 consisting of sets of element data are handled as auxiliary drawing element data similarly to one element data. Further, information specifying other auxiliary drawing element data that respective element data and auxiliary drawing element data belong to is added to the element data and auxiliary drawing element data. Consequently, all the element data and auxiliary drawing element data are hierarchized. Therefore, when the auxiliary drawing element data of the Sub1 are selected by an input means, the auxiliary drawings Sub2 and Sub3 below drawing belonging to the selected auxiliary drawing element data and the element data are all selected as objects to be edited. Further, when the auxiliary drawings Sub2 and Sub3 of low order and the element data are selected by the input means, only the selected auxiliary drawing of low order and the element data are regarded as objects to be selected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing creating / editing apparatus for creating and editing drawings such as a CAD system.
In particular, the present invention relates to a drawing creation / editing apparatus having a data structure in which element data forming a drawing is partially grouped.

[0002]

2. Description of the Related Art In a drawing creation / editing apparatus such as a CAD system, a group of related element data groups of element data such as lines and circles that compose a drawing are grouped and treated as an auxiliary drawing. The editing operation is facilitated. That is, when one drawing includes one or a plurality of auxiliary drawings, the parts of the auxiliary drawings can be moved or copied in a lump, which facilitates the selection operation of the editing target. In such a system, information specifying the auxiliary drawing to which the element data belongs is added to each element data forming the auxiliary drawing. Then, when the element data belonging to any of the auxiliary drawings is selected,
All other element data included in the auxiliary drawing to which the element data belongs are selected at the same time for editing.

[0003]

However, in the above-mentioned conventional drawing creation / editing apparatus, when the element data included in the auxiliary drawing is independently corrected, the grouping is canceled or the active screen (window) is deleted. There is a problem that the operation of changing over is necessary and the correction work is troublesome. Further, in the conventional device, since it is possible to specify only the relationship between the auxiliary drawing and the element data constituting the auxiliary drawing, a partial assembly drawing is included in the entire assembly drawing, such as an assembly drawing, Further, there is a problem in that the hierarchical structure in which the partial assembly drawing is composed of individual parts cannot be dealt with.

The present invention has been made in view of the above problems, and provides a drawing creating / editing apparatus having a high degree of editing freedom, which can simplify a selection operation at an arbitrary hierarchy level in a hierarchically structured drawing. The purpose is to do.

[0005]

A drawing creation / editing apparatus according to the present invention is based on input means for inputting information necessary for creating and editing a drawing, and on the basis of the information input by this input means. A drawing / editing processing means for generating and editing element data constituting a drawing and adding grouping information for grouping a plurality of element data as a partial group of auxiliary drawings to the element data. Element data storage means for storing element data and grouping information generated and edited by the drawing / editing processing means, and drawing output for outputting a drawing based on the element data and grouping information stored in the element data storage means A drawing creation / editing apparatus including means for defining the auxiliary drawing as one element data by the drawing / editing processing means. The element data and the auxiliary data are generated by generating auxiliary drawing element data and adding information specifying the element data or other auxiliary drawing element data to which the auxiliary drawing element data belongs to the element data and the auxiliary drawing element data. When the drawing data is hierarchically structured on the element data storage means, and when the auxiliary drawing element data is selected by the input means, all the element data belonging to the subordinate of the auxiliary drawing element data are selected. The element data to be edited is extracted from the element data storage means.

[0006]

In the present invention, an auxiliary drawing consisting of a set of element data is treated as auxiliary drawing element data in the same manner as one element data, and each element data and auxiliary drawing element data belong to other elements. All the element data and the auxiliary drawing element data are stored in such a manner that the mutual hierarchical structure relationship becomes clear by adding the information for specifying the auxiliary drawing element data.

For this reason, as shown in FIG. 1A, for example, in the prior art, since the respective layers of the auxiliary drawings Sub1, 2, and 3 were not associated with each other, even if the auxiliary drawing Sub1 is moved, another Although the auxiliary drawings Sub2 and Sub3 of No. 1 did not move, as shown in FIG. 1B, according to the present invention, when the auxiliary drawing element data of Sub1 is selected by the input means, the selected auxiliary drawing Subordinate drawings Sub2 and Sub3 and element data that belong to the drawing element data and are subordinate to that are all selected for editing. Further, when the subordinate auxiliary drawings Sub2 and Subordinate 3 and element data are individually selected by the input means, only the selected subordinate auxiliary drawings and element data are selected. As described above, according to the present invention, a selection operation at an arbitrary hierarchical level of a hierarchically structured drawing is facilitated, so that an edit target can be easily designated and a highly flexible editing process can be realized. You can

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A CAD system according to an embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 2 is a functional block diagram of the CAD system according to this embodiment. This system includes an input device 1, a CAD processing unit 2, an element database 3, a display device 4, and a drawing output device 5.

The input device 1 is composed of a keyboard, a mouse, etc., and can be used to specify a necessary command from a command menu displayed on the display device 4 or to display the display device 4.
It is intended to specify points, graphic elements, areas, etc. when the above drawing and editing work is performed.

The CAD processing unit 2 is a drawing / editing processing unit 1.
1, a writing / reading control unit 12, a display control unit 13, and a drawing output control unit 14. The drawing / editing processing unit 11 interprets a command designated by the input device 1 to generate necessary graphic element data at a position designated by the input device 1 or deletes or copies the designated element data. , Edit processing such as movement is performed. Further, the drawing / editing processing unit 11 groups a plurality of element data into a group of partial auxiliary drawings (sub-drawings), and further ID data for layering the grouped element data into each element. It has a function to add to data. The writing / reading control unit 12 writes the element data drawn and edited by the drawing / editing processing unit 11 into the element database 3, and is required from the element database 3 under the control of the drawing / editing processing unit 11. It has a function of reading element data. The display control unit 13 performs display control for displaying the graphic element data generated and edited by the drawing / editing processing unit 11 and the command menu on the display device 4 such as a CRT display. The drawing output control unit 14
Output control is performed when the graphic element data generated / edited by the drawing / editing processing unit 11 is output to the drawing output device 5 such as a pen plotter.

The element database 3 is a database for registering element data constituting the created drawing. For example, as shown in FIG.
And a point database 23. An element number, an address to a segment, an element name, a selection flag, an ID and the like are stored in the ent node 21. The segment 22 stores data indicating both end points (straight line), center point, major axis vector, minor axis vector (circle and ellipse), and the like. An index to the point database 23 is stored in the point and vector data.

Next, the auxiliary drawing (sub drawing) will be described by taking the drawing of the engine as shown in FIG. 4 as an example. The engine shown at 31 in FIG. 4 includes the piston shown in FIG. 32 as its component. The piston also includes a piston ring shown in FIGS. 33 and 34 as its component. These engines, pistons, and piston rings have a hierarchical relationship, and drawing correction work occurs at each level. Therefore, in this system, as shown in FIG.
A set of element data indicating one unit such as the piston 32 and the piston rings 33 and 34 of
For example, element names such as SubA, SubB, and SubC can be added to make an auxiliary drawing.

In the figure, i indicates the level of the hierarchy. That is, the drawing with i = 0 indicated by 31 in the drawing is the highest hierarchical drawing, and the auxiliary drawing at the level of i = 1 is 1 in this drawing.
That is, two auxiliary drawings having a level of i = 2 are included. Further, the auxiliary drawing SubA at the level of i = 1 indicated by 32 in the figure is the auxiliary drawing SubB and SubC at the level of i = 2.
Is included. In the upper drawing, a mark M indicating that the auxiliary drawing is displayed together with the numerical values indicating each level is provided at the positions corresponding to the reference points P1, P2, P3 in the lower drawing.

In FIG. 3, the ID of the ent node 21
Is added to each element data as information for showing such a hierarchical structure. That is, for example, "5" in the ID column
The element data of the element numbers “1, 2, 4, 8” in which is stored belongs to the element data “Sub1” of the element number “5”. Further, the element data of the element number “3, 5” in which “7” is stored in the ID column belongs to the element data “Sub2” of the element number “7”. Here, since the element data of the element number “5” is the auxiliary drawing element data “Sub1”,
The element data included in “Sub1” is also included in “Sub2”. The above relationship is illustrated in FIG. Here, i is a numerical value indicating the level of the hierarchy.

Next, the operation of the present system configured as above will be described. For example, in the drawing 31 of FIG. 4, when it is desired to select the entire piston as an editing target, the input device 1 is operated to move the cursor 41 to the mark M where "1" is displayed and perform a designation operation. Further, when it is desired to select the piston ring as a unit, the cursor 41 is moved to the mark M where "2" is displayed and the designation operation is performed. When it is desired to modify other elements independently of them, the cursor 41 is moved to that element to perform the designation operation. By such an operation, a selection operation at an arbitrary hierarchical level can be performed within one screen.

FIG. 6 is a flow chart showing the operation when selecting an element in this system. First, level i of the hierarchy
Is set to "0" (S1). Here, if the element name of the selected target element is not "Sub", it means that the selection is at the element data level, so the selection flag of the target element is "1".
Is set to (S3), and the process ends. On the other hand, when the element name of the selected target element is "Sub", the level i of the hierarchy is lowered by one level (S4), and the number of the element is stored in the variable N (i) (S5). Next, the ID is N
The element data corresponding to (i) is searched (S6). When the element data is found (S7), unless the element name is "Sub" (S2), the selection flag of the target element is set (S3), and the next element data with ID = N (i) is searched. (S9, S6). If the element name of the found element data is "Sub" (S2), the level of the hierarchy is lowered again (S4), and the same search operation is continued (S).
5, S6). By the above operation, the selection operation of any hierarchy level can be realized very easily.

[0017]

As described above, according to the present invention, when auxiliary drawing element data is selected by the input means, auxiliary drawings and element data lower than the auxiliary drawing element data belonging to the selected auxiliary drawing element data are selected. If all are selected for editing and the subordinate auxiliary drawing or element data is selected with the input means, only the subordinate auxiliary drawing or element data selected will be selected. This has the effect of facilitating editing processing with a high degree of freedom.

[Brief description of drawings]

FIG. 1 is a diagram showing an operation of the present invention in comparison with a conventional example.

FIG. 2 is a functional block diagram showing a main part of a CAD system according to an embodiment of the present invention.

FIG. 3 is a diagram for explaining the contents of an element database in the system.

FIG. 4 is a diagram showing an example of a hierarchically structured drawing that is an editing target in the system.

FIG. 5 is a diagram for explaining a hierarchical structure of element data in the system.

FIG. 6 is a flowchart showing an operation when selecting an element in the same system.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Input device, 2 ... CAD processing part, 3 ... Element database, 4 ... Display device, 5 ... Drawing output device, 11 ... Drawing / editing processing part, 12 ... Write / read control part, 13 ... Display control part, 14 ... Drawing output control unit.

Claims (1)

[Claims] 1. An input unit for inputting information necessary for creating and editing a drawing, and generating and editing element data constituting the drawing based on the information input by this input unit, Drawing / editing processing means for adding grouping information for grouping the elemental data of (1) as a partial collection of auxiliary drawings to the elemental data, and elemental data generated and edited by the drawing / editing processing means, A drawing creation / editing apparatus comprising element data storage means for storing grouping information, and drawing output means for outputting a drawing based on the element data and grouping information stored in the element data storage means, The edit processing means generates auxiliary drawing element data for defining the auxiliary drawing as one element data, and The element data and the auxiliary drawing element data are added to the element data or the auxiliary drawing element data to which the auxiliary drawing element data belongs and the element data and the auxiliary drawing element data are hierarchized on the element data storage means. When the auxiliary drawing element data is selected by the input means, all the element data belonging to the subordinate of the auxiliary drawing element data are structured as the selected element data to be edited, and the element data storage is performed. A drawing creation / editing apparatus, wherein the drawing creation / editing apparatus is characterized by being extracted from a means.