JPH0696142A - Drawing plotting method - Google Patents

Abstract

PURPOSE:To automatically plot a draft line on a related view drawing when a draft line is plotted on a certain view drawing. CONSTITUTION:A storage device 3 stores the display position information of respective view drawings (top view, front view ad side view). When the draft line is defined on a certain view drawing, a graphic processing part 4 judges which view drawing is defined the draft line and judges which axial direction the draft line is made orthogonal to from the position information of the draft line and the reference point position of the view drawing. When it is made orthogonal, a distance from the axial direction and the reference point is calculated, the related view drawing is calculated, and the draft line is automatically generated at the position of the distance calculated in the same axial direction on the related plane drawing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawing drawing method in a two-dimensional CAD system.

[0002]

2. Description of the Related Art Generally, in handwriting drawing, a method is used in which a basic draft line is drawn with a thin line, and then the draft line is stressed and an unnecessary draft line is erased to create a drawing. .

On the other hand, inputting a drawing by an electronic computer 2
In a two-dimensional CAD system, a two-dimensional CAD is provided with a function of drawing / correcting a draft line by a simple operation and a function of stressing (overwriting) the draft line so that a shape can be drawn as if it were hand-drawn. A system has been proposed. In general, the draft line is often drawn on the full paper or as an infinite straight line.

Further, as a conventional method for simultaneously drawing a three-view drawing (front view, plan view, side view) by one operation, a three-dimensional system is used to input a three-dimensional shape, and the three-dimensional drawing is used as a three-dimensional drawing. A CAD system for projecting a plan view has also been proposed.

As a prior art, as a method related to a draft line drawing method, for example, Japanese Patent Laid-Open No. 02-37473, or a method related to a method for projecting a three-dimensional view of a two-dimensional drawing in a three-dimensional system, For example, Japanese Patent Laid-Open No. 01-
No. 125670 etc. are mentioned.

[0006]

However, the above-mentioned prior art does not consider the point of drawing a three-view drawing of a front view, a plan view, and a side view when drawing a drawing, so When a line is drawn, a draft line must be defined for each drawing, and there is a problem that a lot of work time is required for drawing and drawing work.

Further, in the above-mentioned three-dimensional system,
The conventional method of projecting a three-dimensional drawing (front view, plan view, side view) of a three-dimensional drawing can draw a shape into a three-view drawing at once by three-dimensional input. It is not possible to input and it does not have a function to draw a construction line. Further, since it is necessary to have the data as three-dimensional data, there is a problem that the amount of data becomes huge.

Further, since the above-mentioned prior art does not consider the relation between the draft lines between the drawings, when the position of the draft lines is changed, the draft line is changed for each draft. There is a problem in that processing occurs and the correction work requires a great deal of time.

Further, the above-mentioned prior art does not consider the case where the draft line is changed by the design change after the outline line (product shape) is created by stressing the draft line. It is necessary to modify the outline or delete a part of the outline that has changed, change the draft line and trace the draft line again, so it takes a lot of work time to change the design There was a problem.

An object of the present invention is to solve the above-mentioned problems of the drafting line drawing work and to provide a function of automatically drawing a drafting line on a related drawing when the drafting line is drawn on a certain drawing. Another object is to provide a drawing and drawing method for a two-dimensional CAD system.

Another object of the present invention is to solve the above-mentioned problems of the drafting line correction work, and to automatically change the drafting line of a related drawing when the drafting line of a drawing is changed. It is to provide a drawing and drawing method of a two-dimensional CAD system provided with.

Still another object of the present invention is to solve the above-mentioned problem of the design change work, and when the draft line of a certain view is changed, the draft line is traced following the change of the draft line. It is an object of the present invention to provide a drawing drawing method of a two-dimensional CAD system having a function of automatically changing related outlines.

[0013]

In order to achieve the above object, according to the invention of claim 1, in a drawing drawing method in a two-dimensional CAD system interactively executed on a display screen, a predetermined display screen is displayed. A front view, a plan view, and a side view are displayed in an area, and when a draft line is defined on any of the plans in the plan, another plan related to the plan in which the draft line is defined. It is characterized by generating a draft line on.

According to the second aspect of the present invention, the connection relation between the defined draft line and the generated draft line is stored, and when the defined draft line is changed, the connection relation is referred to. Then, the corresponding generated draft line is changed.

According to a third aspect of the present invention, the connection relation between the defined draft line and the outline created by tracing the draft line is stored, and when the defined draft line is changed, It is characterized in that the outline is changed with reference to the connection relationship.

[0016]

[Function] When drawing the draft line, the display position and reference point of each plan are defined in advance, and when the draft line of the plan is defined for a certain plan, the draft line is automatically drawn on the related plan. To be done. As a result, it is not necessary to separately define the draft lines for all the drawings, and the construction work of the draft lines can be performed quickly.

In addition, in the correction of a draft line, when a draft line with a certain plan is modified (moved, etc.), the draft line of another plan related to the draft line is automatically modified according to the modification. To be done. As a result, it becomes unnecessary to correct the construction line for each of the views, so that the construction work of the construction line can be performed quickly.

Furthermore, if the draft line is modified (moved or the like) after the outline is created, the outline created by tracing the draft line is automatically modified in accordance with the modification of the draft line. This eliminates the need for outline correction and redefinition,
It is possible to quickly perform the correction work after creating the outline.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a system configuration diagram of an embodiment of the present invention. In the figure, 1 is an input device such as a keyboard or mouse for selecting menus, instructing coordinate positions and graphics, or inputting numerical values and character strings, and 2 is an input device 1.
Input processing unit that analyzes instructions and data input from
Is a storage device such as a memory for storing the graphic data, the display position of each drawing, the relationship between the drawing lines between the drawings, and the link relationship between the drawing lines and the outline created by tracing, and 4 is the coordinate conversion Or geometric calculation or whether or not the draft line is orthogonal to the axis of the drawing, and which drawing area the draft line is in is determined. A control processing unit 6 for monitoring and controlling, a display processing unit 6 for creating data to be displayed on the display device, and a display device 7 for displaying graphics and menus.

FIG. 2 is a diagram for explaining the setting of the display position of each plan. The display position of each plan is set before drawing the construction line. On the screen of the display device 7 of FIG. 2, a front view 22, a plan view 24, and a right side view 26 are displayed in an area 21 of the sheet (drawing) to be displayed. Do the following:

That is, with the input device 1, a front view 2
The position 221 of the lower left point and the position 222 of the upper right point for designating the display area 2 are input, the position of the reference point 23 of the front view 22 is further input, and the position information is stored in the storage device 3. . Similarly, the display area of the plan view 24 and the plan view 2
4 reference point 25, display area of right side view 26 and right side view 2
The reference point 27 of 6 is set. A left side view, a bottom view, etc. are set as necessary.

In another embodiment of the present invention, the display position of the floor plan as described above can be automatically set. That is, in the control processing unit 5 and the display processing unit 6, as shown in FIG. 3, the area of the drawing is divided into four, and the lower left area is set as the display area 31 of the front view, and its reference point is the lower left area of the area 31. A point 32, an upper left area is a plan view display area 33, a reference point thereof is an upper left point 34 of the area, a lower right area thereof is a right side view display area 35, and the reference point of the area is a reference point of the area. The point 36 at the lower right is automatically set. In this way, the display position of each plan is set, and a draft line is drawn on the plan.

FIG. 4 is a processing flow chart for defining a draft line in the graphic processing section 4, and FIG. 5 is a diagram showing an example of a draft line definition. When the draft line is defined (created) in a certain plan, the graphic processing unit 4 automatically generates the draft line in the related plan.

That is, in FIG. 4, when a draft line is defined (created) in a certain plan, graphic processing is performed based on the position information of the draft line stored in the storage device 3 and the display position information of each plan. The section 4 determines to which drawing the draft line is defined (step 41). Next, it is judged from the position information of the construction line and the reference point position information of the plan whether or not they are orthogonal to the X, Y, and Z axis directions (step 42). If they are orthogonal, the distance from the axial direction to the reference point is determined. Ask (Step 4)
3). Then, a related plan is determined from the obtained information, and a draft line is automatically generated at the position of the distance obtained in the same axis direction (step 44).

For example, as shown in FIG. 5, when a draft line 53 that is perpendicular to the Z axis and is separated from the reference point 52 by a distance L is defined in the plan view 51, the Z It is determined that the right side view 54 with the axis is the related side view, and in the right side view 54, the construction line 56 that is perpendicular to the Z axis and is separated from the reference point 55 by the distance L is automatically generated. In addition, such automatic generation is
It may be performed unconditionally, or a mode may be set depending on whether automatic generation is performed or not, and the mode may be followed. Further, the operator may be inquired whether or not to automatically generate for each definition of the draft line.

FIG. 6 shows the data structure of the draft line in which the link (connection) relationship between the draft line defined as described above and the automatically generated draft line is stored in the storage device 3.
The draft line link (connection) information management table 62 manages elements having a link relationship by group numbers. For example, the group number 61 manages the element numbers 53 and 56. The element number 56 is connected to the right-side view element data 56 by a pointer, and the element number 53 is connected to the plan view element data 53 by a pointer. Further, each element data stores the start point and end point of the draft line and the group number.

As described above, by storing the link (connection) relationship between the defined draft line and the automatically generated draft line, even if there is a change such as moving a draft line, the graphic processing unit 4 Can refer to the link information of the storage device 3 and simultaneously change the draft line of another plan having a link relationship.

For example, as shown in FIG. 7, in the plan view 51, a draft line defined in FIG. 5, that is, a draft line 53 perpendicular to the Z axis and separated from the reference point 52 by a distance L is separated by a distance M in the Z axis direction. When moved only, the figure processing unit 4 rewrites the start point and end point data of the element data 53 of the plan view shown in FIG. Then, based on the group number 61 of the element data 53, the draft line link (connection) information management table 6
2, it can be seen from the management information of the group number 61 that the element number 53 and the element number 56 have a link relationship. The graphic processing unit 4 accesses the element data of the element number 56 and rewrites it to the same start point and end point data as the element data 53.

Therefore, as shown in FIG. 7, when the draft line 53 is moved in the Z-axis direction by the distance M in the plan view 51, the reference point 55 is perpendicular to the Z-axis in the right side view 54.
A draft line (dotted line) separated by a distance L from can be automatically moved by a distance M in the Z-axis direction as indicated by a solid line 56. As with the draft line definition, automatic correction (move)
May be performed unconditionally, or may be set in a mode with respect to whether or not to correct it, and the mode may be followed. In addition, the operator may be inquired as to whether or not to correct (draft) the draft line.

FIG. 8 shows the data structure of the outline line created by tracing the underline and the underline. In this data structure, the connection point table 94 manages the draft line element number that generates the connection point and the outline line element number that is created based on the connection point. Further, the construction line element number in the connection point table 94 is connected to the construction line element data by the pointer, and the outline line element number is connected to the outline line element data by the pointer.

The element data of the draft line stores the start point and the end point of the draft line and the connection point, and the element data of the contour line connects the start point and the end point of the contour line and the connection of the start point. The connection points of points and end points are stored.

As described above, in the storage device 3 of this embodiment,
When tracing a draft line, the link relationship between the outline created by tracing and the draft line is stored, so even if there is a change such as moving a certain draft line, the link relationship will be based on the link information. It is possible to simultaneously change the outlines having.

For example, as shown in FIG.
Is moved (the element data 81 of the construction line is changed), the connection point information 9 of the element data 81 of the construction line of FIG.
From 3, 94, the connection point tables 93, 94 are referred to.
The contour line created based on the connection point table 94 based on the connection point 94 is the contour line 89 from the element number of the contour line.
And 90, and the element data 89 and 90 of the outline are rewritten according to the change of the element data 81. Similarly, a contour line 88 created based on the connection point 93.
Data can be rewritten.

In this way, all the outlines 88, 89, 9 are processed according to the movement processing of the draft line 81, as shown in FIG.
0 can be moved automatically.

FIG. 10 is a diagram showing an example of movement of the outline. That is, an example is shown in which, when a certain construction line is moved after tracing the construction line, the related construction line and outline are automatically corrected. When the draft line 101 of the plan view is moved, the draft line 102 of the right side view corresponding to the draft line 101 is automatically moved based on the draft line link relationship, as described in FIG. 7. Then, the outlines 103, 104, 105, 108 of the plan view and the right side view,
The outlines of 109 and 110 can be automatically moved as shown in FIG. 10 based on the link relation between the draft line and the outline.

FIG. 11 is a diagram showing a definition example of a draft line which is not orthogonal to the axial direction. That is, this is an example of automatically defining a draft line in another plan when the draft line 111 in which the draft line is not orthogonal to the axial direction is defined. If the construction line is not orthogonal to the axial direction, the construction line cannot be used to automatically generate a construction line in another drawing, but if there is an intersection with another auxiliary line in the same drawing, it will be different based on the intersection information. You can define a construction line for the floor plan. For example, when the construction line 111 of the plan view is defined, the construction line 112 that intersects with the construction line is searched for. Then, since the intersection point 115 is separated by the distance L in the Z-axis direction, the construction line 114 orthogonal to the Z axis can be automatically generated on the right side view based on the intersection point information 115.

FIG. 12 is a diagram showing an example of movement of the outline. That is, this is an example in which the outline line is created by tracing the outline line, the outline line is cut off, the outline line is edited, and then the outline line is moved. The outline before moving the drafting line in FIG. 12 is the same as the outline in FIG. 9, but the drafting line in FIG. 12 does not have the oblique drafting line 82 in FIG. 9. Therefore, the contour lines 125, 126, 127, 128, 1 with the corners dropped
Even when the draft line 29 of 29 is moved, the outline is moved while the shape of the corner drop portion 129 is maintained. As described above, even if the shape of the draft line before moving is the same, the movement result of the outline line after moving the draft line can be changed due to the difference in the creation process of dropping the corner or providing the draft line. it can.

[0038]

As described above, according to the first aspect of the present invention, when a draft line is defined on each of the front view, the plan view and the side view, it is related to the plan view. Construction lines are automatically generated for other plans, so when you draw a construction line, you do not need to define the construction line for another plan that is necessary for the drafting method, and the efficiency of the construction work for the construction line is reduced. Will be improved.

According to the second aspect of the present invention, when the created draft line is modified, the corresponding draft line of another plan is also modified. Therefore, the draft line need not be modified for each plan. The efficiency of the work of correcting the draft line is further improved.

According to the third aspect of the present invention, when the created draft line is modified, the outline line created by tracing the draft line is also modified. Therefore, when the draft line is modified, It is not necessary to modify the outline created by tracing the draft line, and the modification work after creating the outline can be performed efficiently.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of an embodiment of the present invention.

FIG. 2 is a diagram illustrating setting of a display position of each plan.

FIG. 3 is a diagram illustrating automatic setting of a sectional view.

FIG. 4 is a processing flowchart for defining a draft line in a graphic processing unit.

FIG. 5 is a diagram showing an example of a draft line definition.

FIG. 6 is a diagram showing a data structure of a draft line.

FIG. 7 is a diagram illustrating movement of a draft line.

FIG. 8 is a diagram showing a data structure of a draft line and an outline.

FIG. 9 is a diagram showing an example of movement of an outline by moving a draft line.

FIG. 10 is a diagram showing an example of movement of an outline.

FIG. 11 is a diagram showing a definition example of a draft line which is not orthogonal to the axial direction.

FIG. 12 is a diagram showing an example of moving a contour line having a corner drop.

[Explanation of symbols]

 1 Input Device 2 Input Processing Unit 3 Storage Device 4 Graphic Processing Unit 5 Control Processing Unit 6 Display Processing Unit 7 Display Device

Claims (3)

[Claims] 1. A drawing drawing method in a two-dimensional CAD system interactively executed on a display screen, wherein a front view, a plan view and a side view are displayed in a predetermined area on the display screen.
When a drafting line is defined on any of the drawings, a drafting line is generated in another drawing related to the drawing in which the drafting line is defined. . 2. A connection relation between the defined draft line and the generated draft line is stored, and when the defined draft line is changed, the corresponding relation is generated by referring to the connection relation. 2. The drawing drawing method according to claim 1, wherein the drawn draft line is changed. 3. A connection relation between the defined draft line and an outline created by tracing the draft line is stored, and when the defined draft line is changed, the connection relation is referred to. The drawing method according to claim 1, wherein the outline is changed.