JPS60201473A - Three-view drawing input device - Google Patents

Abstract

PURPOSE:To generate easily a cubic structural drawing from a trihedral drawing data by dividing a drawing generating region of a trihedral drawing data into square cells depending on the size decided by the degree of density of a drawing, regarding the region in each cell as one point so as to attain ease of designation and input of a feature point of the drawing, displaying the feature points of each two-dimensional drawing to a projected point display part of X, Y axes and using the projected point of the feature point as a common origin. CONSTITUTION:When a cell size of a drawing generating region (c) is designated by a cell size designation circuit 1, for example, a cell size 5 is designated by the circuit, a cell establishing circuit 2 divides the drawing generating region (c) into square cells of the cell size 5. When a two-dimensional diagram to be drawn is established, a projected point display circuit 5 displays the projected point representing the feature of other two-dimensional drawing stored so far to a longitudinal projected point display sentence (a) and a lateral projected point display part (b). Then a projected point set circuit 8 is operated at the same time when the designated two- dimensional drawing is inputted and coordinates of the feature points of the inputted two- dimensional drawing are set to the projected point data without being overlapped with the data registered already. Then in designating a trihedral drawing, the data is displayed together with the projected point data representing the feature point of each two-dimensional drawing registered already, the projected point data of the displayed feature point is used as the common origin and the trihedral drawing data is generated.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a three-dimensional view input device for creating a three-dimensional structural drawing by inputting three two-dimensional views consisting of a front view, a plan view, and a side view.

(b) Background of the Technology Design automation in which devices are designed using computers has been studied and implemented for a long time. but.

Conventionally, the focus has been on automating design processes such as implementation design, which involves a lot of automatic repetitive work. However, recently, designers and computers are increasingly designing circuits and structures while interacting with each other. In particular, CAD/CAM systems that systematize and automate design and manufacturing are highly anticipated technologies in the future.

Among the design automation mentioned above, especially in structural design, there are many cases where 3D blueprints are required, and many systems that can easily create 3D structural blueprints using a simple method will be developed in the future. This is a promising technology.

(c) Conventional technology and problems In structural design, which is one type of design automation mentioned above.

In addition to the conventional method of creating a front view, plan view, and side view on a computer and finally designing a three-dimensional structure, recently, all design conditions are input into a computer to create a three-dimensional structure. Methods for creating diagrams have also come into use.

However, the method of inputting all design conditions into a computer and creating a three-dimensional structural diagram requires a considerable number of man-hours for software development. On the other hand, the conventional method of creating three-view views (front view, top view, side view) using a device linked to a computer (this is called a three-view input device)
The purpose is to create only a side view (side view), and it would take a lot of man-hours to create a three-dimensional structure diagram using the same method as the three-view diagram creation method using the data used to create this three-view diagram. It was not suitable for creating three-dimensional structure diagrams.

(d) Purpose of the Invention The object of the present invention is to provide a novel three-view diagram input device that solves the above-mentioned problems. The object of the present invention is to realize a diagram input device.

(e) Structure of the Invention The present invention is a three-dimensional view input device that creates a three-dimensional structure diagram by inputting three two-dimensional diagrams consisting of a front view, a plan view, and a side view. cell creation means for dividing the drawing creation area into square cells of a predetermined size according to density; and a cell creation means for dividing the drawing creation area into square cells of a predetermined size, and when inputting one two-dimensional diagram among the three two-dimensional diagrams, another two-dimensional diagram parallel to the shared coordinate axis. and a projection point display means for displaying projection points of feature points consisting of intersection points, break points, and connection points, and it is possible to easily create a three-dimensional structure diagram from the three-dimensional view data obtained by the means. This can be achieved using the characteristic three-view drawing input device.

(f) Examples of the invention The present invention will be explained below with reference to the drawings.

FIG. 1 is an embodiment of the three-view input device according to the present invention;
Each figure shows a two-dimensional drawing creation status diagram.

In the figure, l is a cell size designation circuit, 2 is a cell determination circuit, 3 is a drawing designation circuit, and 4 is a control circuit.

5 is a projection point display circuit, 6 is a three-dimensional view display circuit, 7 is a two-dimensional view input circuit, and 8 is a projection point setting circuit. or,
A indicates the projection point display portion on the vertical axis, b indicates the projection point display portion on the horizontal axis, and C indicates the drawing creation area.

This embodiment includes a cell size designation circuit l that designates a predetermined size (cell size) for dividing according to drawing denseness within a designated drawing creation area C in order to accurately input three-view drawing data;
A cell determination circuit 23 that divides the drawing creation area C designated by the cell size designated by the cell size designation circuit 1; designates the drawing to be created (each two-dimensional diagram or three-view diagram consisting of a front view, a top view, and a side view); Drawing designation circuit 39 Control circuit 4 that establishes or controls the operation of either the three-dimensional drawing or each two-dimensional drawing specified by the drawing designation circuit 3 Projection that displays projection points showing the characteristics of each two-dimensional drawing Point display circuit 5. A three-view display circuit for displaying a three-view view on a display (not shown)6. A two-dimensional diagram input circuit 7 inputs a two-dimensional diagram on a display (not shown) for registering projection points showing characteristics, and sets the projection points of the input two-dimensional diagram to projection point display parts a and b. The projection point setting circuit 8 is configured to register a projection point in a memory circuit (not shown).

The gist of the present invention is to create a three-dimensional drawing using three-view data. In other words, in order to accurately manually create the three-view drawing data, the drawing creation area C is divided into square cells (for example, the drawing creation area C of 70×120 horizontal as shown in FIG. Divide into squares of size 5).

By treating all areas within the cell as the same point, it is easier to specify and input the feature points of one drawing, and it is also easier to draw each two-dimensional drawing from a common origin, which is a necessary condition for creating three-dimensional drawing data. In order to satisfy be.

Next, the operation of this embodiment will be explained.

When the cell size of the drawing creation area C is specified as 2, for example, cell size 5, by the cell size designation circuit 1, the drawing creation area C is divided into square cells of cell size 5 by the cell creation circuit 2. The drawing to be drawn next (a three-dimensional drawing or each two-dimensional drawing, in this example, a two-dimensional drawing) is selected by the drawing designation circuit 3.
When designated by , the control circuit 4 establishes the two-dimensional diagram designated by the drawing designation circuit 3.

Since the two-dimensional diagram has been established, the projection point display circuit 5 displays the projection points representing the characteristics of other two-dimensional diagrams stored so far in the projection point display area a on the vertical axis and the projection point display area on the horizontal axis. It will be displayed on a partial screen and will wait for input of the specified two-dimensional diagram.

Next, the projection point setting circuit 8 operates simultaneously with the input of the specified two-dimensional diagram, and the coordinates of the feature points of the input two-dimensional diagram are incorporated into the projection point data without duplication with the already registered data. . When the input of the projection point data is completed, the drawing designation circuit 3 again specifies the drawing.

Next, when a three-view diagram is designated, the control circuit 4 establishes a three-view diagram and outputs it to the three-view display circuit 6.

It is displayed together with the projection point data of the feature points of each two-dimensional diagram that has already been registered on a display (not shown), etc., and three-dimensional view data is created using the projection point data of the displayed feature points as a common origin. The operation ends with a step.

(g) Effects of the Invention According to the present invention as described above, each 2
The present invention has the effect that it is possible to provide a three-view diagram input device that can accurately and easily create three-view diagram data for generating a three-dimensional structure diagram from a three-dimensional diagram consisting of a dimensional drawing.

[Brief explanation of the drawing]

FIG. 1 is an embodiment of the three-view input device according to the present invention;
Each figure shows a two-dimensional drawing creation status diagram. In the figure, 1 is a cell size designation circuit, 2 is a cell determination circuit, 3 is a drawing designation circuit, and 4 is a control circuit. 5 is a projection point display circuit, 6 is a three-dimensional view display circuit, 7 is a two-dimensional view input circuit, and 8 is a projection point setting circuit. Shout out to me? song

Claims (1)

[Claims] This is a three-dimensional drawing input device that creates a three-dimensional structure diagram by inputting three two-dimensional diagrams consisting of a front view, a plan view, and a side view, and the drawing creation area is set to a predetermined size according to the denseness of the input two-dimensional diagram. A cell creation means for dividing into square cells, and when inputting one of the three two-dimensional diagrams, intersections, break points, and connection points of the other two-dimensional diagram in parallel to a shared coordinate axis. 1. A three-view diagram input device comprising: projection point display means for displaying projection points of feature points.