JPH0492974A - Automatic dimension display device - Google Patents

Abstract

PURPOSE:To reduce the burden on an operator and to improve work efficiency by preventing the operator from designating the display places of dimensions for respective elements. CONSTITUTION:A graphic is inputted through a digitizer 10 and is stored in a first memory 18a. Then, CU 22 forms the virtual planes of meshes in a fourth memory 18d for respective diagrams. The sizes of the meshes are allocated on the fourth memory 18d by an operation expression based on the sizes of respective diagrams. Then, the dimensions are obtained by an operation for respective elements of the diagrams through ALU 20 based on the content of the first memory 18a. The obtained dimensions are stored in a second memory 18b. All the dimensions are added to a third memory 18c and the diagrams are outputted in a plotter 28 based on data, whereby they are displayed in a display 30.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic dimension display device, and more particularly to a CAD
The present invention relates to an automatic dimension display device suitable for use in a system that automatically displays and outputs dimensions for each element on input drawings.

(Prior Art) In conventional CAD systems, when automatically displaying dimensions such as length and height for each element such as sides and steps of a figure,
First, the operator inputs a figure through input means such as a digitizer, CRT, and light ben. After completing the graphic input, the operator specifies and inputs each element for which dimensions are to be displayed on the drawing. The CPU of the CAD system calculates the dimensions of each designated element from the scale of the reference plane on which the figure is expressed, and when outputting the drawing, can also display the determined dimensions.

(Problems to be Solved by the Invention) However, the above conventional CAD system has the following problems.

The operator has to input each element whose dimensions are to be displayed, and when there are many elements whose dimensions are to be displayed, it takes time and effort to input them, resulting in poor work efficiency. Furthermore, since the operator inputs the information, there is a problem in that the greater the number of elements, the higher the possibility of input errors (incorrect input, non-input, etc.).

Therefore, an object of the present invention is to provide an automatic dimension display device that can reduce the burden on the operator regarding dimension display.

(Means for solving problems) In order to solve the above problems, the present invention includes the following configuration.

That is, an input means for inputting data of a figure on a reference plane having a predetermined scale, a first storage means for storing data of the figure inputted from the input means, and a data stored in the first storage means. a calculation means for calculating the dimensions of each element of the figure from the data of the figure; a second storage means for storing the dimensions of each element of the figure calculated by the calculation means; a third storage means for storing graphic data in which dimensions are displayed; an output means for outputting the graphic data stored in the third storage means; and when data of a figure is input, determining elements of the figure. and obtaining the dimensions of each element in a predetermined order via the calculation means to create the graphic data;
It is characterized by comprising a control means for outputting to the output means.

(effect) The effect will be explained.

Since the control means determines the element and determines the dimensions of each element via the calculation means, it becomes possible to automatically determine the dimensions of each element without the operator specifying the element.6 (Example) Below , preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, let us first discuss the configuration of the automatic dimension display device of this embodiment.
This will be explained together with the block diagram in the figure.

Reference numeral 10 denotes a digitizer which is an example of an input means, and uses the input surface as a reference plane (physical reference plane) and data of a figure drawn on it (X-Y data on the reference plane of the dots constituting the figure).
coordinate position data) is input. It is also possible to input the scale of the reference plane.

In addition to the digitizer 10, the input means may be an image scanner, or data may be transferred and input from an external memory or an external system.

A keyboard 12 is provided for the operator to input data and commands.

Reference numeral 14 denotes an internal memory, which is an example of a storage means, and includes a ROM in which a program including an operating system and control data for the control unit, which will be described later, is written.
16 and R that can write and read data and information.
Consists of AM1B. RAM18 is the first storage area.
memory 18a, second memory 18b, third memory 1
8C1 is allocated to the fourth memory 18d, .

The first memory 18a serves as a first storage means in which graphic data input from the digitizer 10 is stored together with its scale. The second memory 18b serves as a second storage means.
After calculating the dimensions (length, height, etc.) of each element for displaying the dimensions of sides, steps, etc. of the input figure, the values are stored. The third memory 18c serves as a third storage means.
It stores graphic data (position data of pixels to be output) when outputting a graphic as a drawing with dimensions attached to a figure to an output means to be described later. The fourth memory 18d, which will be described in detail later, is allocated to each figure and stores the display state of the figure, dimensions, etc. on a virtual (logical) plane including the figure. The virtual plane is divided into thin grids (mesh),
By distinguishing between visible parts such as dimensions and non-displayed parts,
This prevents the dimensions from overlapping each other.

20 is an arithmetic unit (ALU) which is a calculation means, and calculates the dimensions of each element of the figure from the reference position and/or the dimensions between each element based on the figure data and scale of the first memory 18a. .

22 is a control unit (CU) which is a control means.
, and controls the devices of the entire system according to a control program loaded in the ROM 16.

24 is an external memory in which a magnetic disk device is arranged. The external memory 24 stores the memory contents of the RAM 18 in a non-volatile manner, but depending on the system, it may be stored in the RAM 18 as a virtual memory.
M18 first memory 18a, second memory 18b,
The third memory 18c, fourth memory 18d, . . . may be allocated to the external memory 24.

A printer 26 is provided for creating hard copies of data and processed information.

Reference numeral 28 denotes an X-Y plotter, which is an example of an output means, and creates a drawing with dimensions displayed based on the graphic data in the third memory 18c.

30 is also a graphic display which is an example of an output means, and displays figures input by the digitizer 10 and the plotter 2.
It is now possible to display drawings, other data, and information output in 8. Furthermore, by using the light pen 32, it is also possible to input various data as an input means.

In addition to the above-described plotter 28 and display 30, it is also possible to adopt a method of transferring the graphic data of the drawing to another external memory or other system as the output means.

Next, the operation of the automatic dimension display apparatus having the above configuration will be explained with further reference to the flowchart of FIG. 2 and FIGS. 3 and subsequent figures.

First, when the system is started, the Cu 22 makes preparations such as clearing the RAM 18 according to the control program in the ROM 16 (step 100).

When preparations are complete, the operator inputs the figure via the digitizer 10 (step 102).

This embodiment will be explained using an example in which a figure shown in FIG. 3 is input. In addition, in FIG. 3, 34 is a front view, 36 is a side view, 38 is a bottom view, and 40 is an enlarged side view. Third
When the figure in the figure is input, Cu22 inputs the figure data to the first
The data is stored in the memory 18a.

Subsequently, Cu22 was added to the fourth
A mesh virtual plane (hereinafter referred to as a mesh) is formed in the memory 18d. 4 shows the mesh in front view 34, FIG. 5 shows the mesh in side view 36, FIG. 6 shows the mesh in bottom view 38, and FIG. 7 shows the mesh in enlarged side view 40. The size of each mesh is determined by the CL 122 according to a predetermined arithmetic expression based on the inputted size of each mesh, and is allocated on the fourth memory 18d.

Once a mesh is assigned to each mesh (FIGS. 4-7), the Cu 22 then assigns a mesh to each mesh (FIGS. 4-7) based on the graphic data in the first memory 18a.
The first flag (
- (indicated by Raido)) (step 104).

Next, the Cu 22 calculates the dimensions of each element in each of FIGS. 34, 36, 38, and 40 based on the contents of the first memory 18a via the ALU 20 (step 106). In other words, the dimensions of each element are determined from the scale of the reference plane and the positions of the dots constituting the figure on the reference plane. In this embodiment, the dimensions are determined by distances from each base point 42, but the dimensions may be distances between elements. In addition, for places where there is no need to enter dimensions, after inputting in step 102, write the light bend 3
2, it may be specified as an element that does not require dimension entry and/or calculation. As a method for specifying this, there are methods such as specifying a color for the element. Furthermore, if it is desired to specify the number of digits for dimension display for each element in advance, the number of digits can be specified by specifying a color or the like. The dimensions determined in step 106 are stored in the second memory 18b.

Note that the calculation order for determining the dimensions in this embodiment is as follows.

(1) Each element showing the outline of the side view 36, (2) Bottom view 3
(1), (2) for each element showing the outline of front view 34, (3) each element showing the outline of front view 34, which is not included in (1).
(4) Elements in the side view 36 that are not included in (1), (2), (3); (5) Elements in the bottom view 38 that are not included in (1), (2), ( 3), (
(4) Elements not included in (6) Elements of front view 34 (1), (2), (3), (
4), the elements not included in (5) are: Note that detailed dimensions of the side view 36 can be displayed in the enlarged side view 40, so elements that do not need to be filled in in advance are entered in color as described above, and the specified dimensions of the side view 36 obtained by calculation are is programmed to be displayed on the enlarged side view 40.

After determining the dimensions of all elements, the CU 22 adds dimension extension line and dimension data to the third memory 18c (step 108). Add one extension line and dimension data at a time in the same order as the calculation order.

Once a set of extension lines and dimensions have been added, a second flag (indicated by a double die in Figures 4-7) is set on the mesh corresponding to that view (step 110).

Next, the CU 2 searches the second memory 18b to check whether there are any dimensions that have not been added to the graphic data yet (step 112). If there are, it detects which figure the dimensions are and takes action. Read the mesh from the fourth memory 18d, and determine the position where the next set of dimension extension lines and dimensions are to be drawn near the first flag at a location where the second flag is not set (step 116); Return to step 108 and repeat the above sequence.

As the work progresses and it is determined in step 112 that all the dimensions have been added to the contents of the third memory 18c, the plotter 28 plots the drawing (eighth
(Fig.) and also outputs it to the display 30 (
Step 114).

In addition, if you create a dimension entry position with multiple meshes,
There is a possibility that the figures may overlap on the drawing, but in that case, the program is programmed to shift them from each other to avoid overlap.

In addition to the length and height dimensions of each element, the output drawing (Fig. 8) also shows the inclination angle of the element by the signs rAoIJ and rAO2J, and rsoIJ and rs.

2" indicates the radius of curvature of the element, but these data are automatically output by the program,
These dimensions can also be determined by arithmetic processing and displayed using numbers or symbols, provided that the program does not become complicated.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. be.

(Effects of the Invention) When the automatic dimension display device according to the present invention is used, there is no need for the operator to specify the dimension display location for each element.
The burden on the operator is reduced, and the work efficiency of drawing can be significantly improved. Furthermore, since operator intervention can be reduced, input errors can also be suppressed, which is a significant effect.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the automatic dimension display device according to the present invention, FIG. 2 is a flowchart showing its operation, FIG. 3 is a diagram showing input figures, and FIG.
7 to 7 are diagrams showing the meshes of each diagram, and FIG. 8 is a diagram showing the output drawing. 10... Digitizer, 18a... First memory, 18b... Second memory, 18c... Third memory, 20... ALU. 22...CU, 28...X-Y plotter, 3
0...Graphic display.

Claims (1)

[Claims] 1. Input means for inputting data of a figure on a reference plane having a predetermined scale; and a first input means for storing data of a figure input from the input means.
storage means, a calculation means for calculating the dimensions of each element of the figure from the data of the figure stored in the first storage means, and a second storage means for storing the dimensions of each element of the figure calculated by the calculation means. 2
a third storage means for storing graphic data in which dimensions are displayed for each element of a figure on the reference plane; and an output means for outputting the graphic data stored in the third storage means; control means for determining the elements of the figure when data of the figure is input, determining the dimensions of each element in a predetermined order via the calculation means, creating the graphic data and outputting it to the output means; An automatic dimension display device comprising: