JP2004118784A - Cad (computer aided design) system, method of generating cad data, and program for generating cad data - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly reflect modification in a plane view onto an elevation view. <P>SOLUTION: The plane view is prepared, and the first elevation view is automatically generated based on height information or the like of drawing elements in the plane view. It is revision-corrected to be edited, and the first elevation view after the edition is completed. The first elevation view after the edition is saved in a storage unit by an evacuation means. Then, the plane view is modified to generate automatically the second elevation view based on the plane view after the modification. When a user assigns a closed area corresponding to a modified portion in the plane view, in the first elevation view after the edition, a CAD system specifies a corresponding area corresponding thereto in the second elevation view. Then, the CAD system deletes an inside of the closed area in the first elevation view after the edition, deletes an outside of the corresponding area in the second elevation view, and combines the first elevation view and the second elevation view deleted after the edition. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a CAD apparatus and the like, for example, to an apparatus that automatically generates an elevation view from a plan view in the field of architecture.
[0002]
[Prior art]
With the rapid development of computers in recent years, the creation of architectural drawings, which was conventionally performed manually using a drafter or the like, has been widely performed by a CAD (Computer Aided Design) device using a computer. It has become. Here, the CAD device is a design support device using a computer, which installs CAD software on a personal computer and increases the efficiency of drawing creation by using the arithmetic function and storage function of the computer.
CAD devices for various fields such as electric circuit design and mechanical drawings are commercialized. For example, a CAD device for architectural design automatically generates an elevation using a plan view. There is.
In this method, the floor plan of each floor is designed as a floor plan, and information on the roof (shape, material, etc.) is added to this, and an elevation view of the building viewed from the front or side is automatically generated. Things.
[0003]
Automatic generation of an elevation view from this plan view is executed by the following mechanism.
First, a CAD device is provided with components for constructing an architectural drawing, such as a room, a window, a toilet, a roof, a balcony, as components (hereinafter, drawing elements), and a user (designer, etc.) displays them on a display screen. Create a floor plan by combining them above.
To these drawing elements, information relating to a three-dimensional shape such as height information and a mounting position and other information are given as attributes.
For example, when the drawing element is a wall, information for identifying the wall such as information that the drawing element is a wall, information about dimensions such as height information, information about a material, and information about a surface pattern is used as an attribute. Has been granted.
The CAD apparatus automatically generates an elevation view using these attributes (particularly height information) of the drawing elements constituting the plan view.
[0004]
The user adds and corrects the elevation generated automatically in this way using the CAD device, and the elevation is completed.
As described above, when an architectural drawing is created using a CAD device, the design data can be easily changed because the drawing data is recorded as electronic data. In addition, by using an arithmetic function of a computer, it is possible to easily use an extended function such as automatically calculating the strength and cost of a building, and to easily create a perspective view (isometric view) and a sectional view.
[0005]
Furthermore, it is also possible to install the CAD software on a portable computer, bring it, and make a presentation while giving a presentation to the customer. In this case, the floor plan is modified according to the customer's request (change of wallpaper, windows, etc., addition of balconies, etc.), and the modified building is visually used as an elevation or perspective view using this. Can be presented.
As described above, the use of the CAD apparatus makes it possible to increase the efficiency of drawing creation, and also to improve the efficiency of construction work such as overall design work and sales activities in various fields of construction work.
There are the following CAD apparatuses for reducing the labor for drawing.
[0006]
[Patent Document 1] JP-A-5-81383
[0007]
[Problems to be solved by the invention]
However, in the conventional CAD apparatus, a problem may occur when an elevation view is automatically generated from a plan view. This will be described with reference to FIG.
FIG. 14 is a diagram for explaining a case where an elevation view is automatically generated from a plan view in a conventional CAD apparatus.
First, the floor plan of a building is determined with a customer, and a plan view 1001 is generated by a CAD device. In the plan view 1001, a layout of a kitchen, an entrance, a washroom, a living room, and the like is set, and a window 1002 is set in the living room. Attributes such as height information are given to these drawing elements, and the CAD apparatus can automatically generate the elevation 1010 using these attributes. Then, the user makes corrections on the automatically generated elevation 1010 from the CAD device (adding the character strings 1021, 1022 and arrows), and the elevation is completed.
[0008]
Next, it is assumed that the window 1002 of the plan view 1001 is changed to a sweeping window (a window whose lower end reaches the floor) 1002a by a meeting with a customer, and a changed plan view 1001a is created. At this time, as the window 1002 is changed to the window 1002a, the attribute given to the window is also changed to the attribute of the window 1002a. The window 1002 of the elevation 1020 is automatically changed to the window 1002a in conjunction with the change of the attribute. As a result, the elevation 1020 is updated to an elevation 1020a. However, in the elevation 1020a, the attribute of the window portion is updated, but the attribute of the wall portion remains unchanged, so that the shape of the wall is not updated, and the wall 1025 overlaps the window 1002a.
[0009]
Therefore, when the plan view 1002a, which is the changed plan view, is automatically generated from the plan view 1002a, the window 1002a and the wall are correctly displayed, but the character strings 1021 and 1022 and the arrows added in the elevation view 1020 drop off, and the In other words, the elevation view 1020b must be rewritten and corrected again.
That is, in the conventional CAD apparatus, the elevation view automatically generated from the plan view cannot be automatically and appropriately corrected in accordance with the content of the correction by simply correcting the plan view. When an elevation is automatically generated from the above, there is a problem that the contents that have been retouched and corrected in the previously generated elevation are dropped.
[0010]
Therefore, an object of the present invention is to provide a CAD apparatus or the like that can appropriately reflect a change in a plan view or the like in an elevation view or the like.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, the structure of the structure is described using an original drawing in which a configuration of the structure such as an internal structure, an appearance, and a cross section is illustrated on a predetermined reference projection plane. Generating means for automatically generating a first drawing showing another drawing plane, editing means for editing the automatically generated first drawing, and changing at least a part of the original drawing Means for automatically generating a second drawing illustrated on the other projection surface of the structure using the changed original drawing after the change, and a first generated after the edited first drawing A CAD apparatus comprising: an area designating unit for designating an area in the drawing or the second drawing; and synthesizing means for synthesizing the edited first drawing and the second drawing. The synthesizing means is the area designating means, and the combination changed by the changing means is provided. When the area corresponding to the specified area is specified, the edited first drawing corresponding to the outside of the specified area is combined with the second drawing corresponding to the specified area, or the area specification is performed. Means for designating an area corresponding to a location edited by the editing means, the first drawing after editing corresponding to the specified area and the second drawing corresponding to an area outside the specified area. Provided is a CAD apparatus characterized by combining drawings.
In the invention described in claim 2, the original drawing is a plan view, and the drawing automatically generated by the first generating means and the second generating means is an elevation view. 1. A CAD device according to item 1.
According to the third aspect of the present invention, the predetermined drawing is configured using drawing elements having attributes such as height information, and the first generation unit generates the drawing that configures the predetermined drawing. The CAD apparatus according to claim 1 or 2, wherein the first drawing is automatically generated using an attribute of an element.
In the invention described in claim 4, the changing means changes an attribute of a drawing element forming the predetermined drawing, and the second generating means changes an attribute of a drawing element forming the predetermined drawing after the change. The CAD apparatus according to claim 3, wherein the second drawing is automatically generated using an attribute.
The invention according to claim 5, further comprising a save unit for saving the edited first drawing edited by the editing unit to a storage device, wherein the synthesizing unit saves the edited first drawing saved by the save unit. And the second drawing are combined to provide a CAD apparatus according to any one of claims 1 to 4.
According to a sixth aspect of the present invention, in the computer comprising: a first generating unit, an editing unit, a changing unit, a second generating unit, an area specifying unit, and a synthesizing unit, The generating means automatically generates a first drawing showing the structure on another projection surface using an original drawing showing the structure of the structure such as an internal structure, an appearance, and a cross section on a predetermined reference projection surface. A first generating step, an editing step of editing the automatically generated first drawing by the editing means, a changing step of changing at least a part of the original drawing by the changing means, A second generating step of automatically generating a second drawing illustrated on the other projection plane of the structure using the changed original drawing after the change by the generating means; and The edited first drawing or the second drawing A CAD data generating method, comprising: an area specifying step of specifying an area in the drawing; and a synthesizing step of synthesizing the edited first drawing and the second drawing by the synthesizing means. In the combining step, in the area specifying step, when the area corresponding to the location changed in the changing step is specified, the first drawing after editing corresponding to the area outside the specified area and the area in the specified area In the case where the second drawing corresponding to the specified area is synthesized, or in the area specifying step, an area corresponding to the location edited in the editing step is specified, the edited second area corresponding to the specified area is specified. And a second drawing corresponding to an area outside the designated area.
In the invention according to claim 7, the first structure in which the structure is illustrated on another projection surface using an original drawing in which the structure of the structure such as an internal structure, an appearance, and a cross section is illustrated on a predetermined reference projection surface. A first generation function of automatically generating a drawing, an editing function of editing the automatically generated first drawing, a changing function of changing at least a part of the original drawing, and a changing function of the changed original drawing. A second generation function for automatically generating a second drawing illustrated on the other projection plane of the structure using the first drawing after the editing or the area in the second drawing after the editing. A CAD data generation program for realizing, by a computer, an area designating function to specify and a synthesizing function for synthesizing the first drawing after editing and the second drawing, wherein the synthesizing function comprises: In the specified function, change the When the area corresponding to the specified area is specified, the edited first drawing corresponding to the outside of the specified area is combined with the second drawing corresponding to the specified area, or the area specification is performed. When the function designates an area corresponding to the location edited by the editing function, the first drawing after the editing corresponding to the designated area and the second drawing corresponding to the outside of the designated area Provided is a CAD data generation program that combines drawings.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail.
(1) Overview of the embodiment
FIG. 1 is a diagram for explaining the concept of an elevation update method performed by the CAD apparatus according to the present embodiment.
First, a plan view 1030 such as a floor plan is created by a CAD apparatus. From this, a first elevation view (first drawing) is automatically created. Then, the user performs editing work such as correction and correction, and a first elevation 1032 after editing is created.
[0013]
Here, it is assumed that the plan view 1030 is changed, a balcony is newly added to the front of the house, and the changed plan view 1040 is created. A second elevation view 1041 (second drawing) is automatically generated from the plan view 1040.
Here, comparing the first elevation 1032 after the editing with the second elevation 1041, the edited editing information is stored in the first elevation 1032 after the editing. No information about the newly added balcony is stored. On the other hand, in the second elevation 1041, the balcony 1043 is reflected in the elevation, but no editing information is included.
[0014]
Thus, when the user specifies the area 1035 including the changed portion in the edited first elevation 1032, the CAD apparatus also specifies the corresponding area 1045 of the second elevation 1041. Then, the CAD apparatus combines the portion outside the region 1035 in the first elevation view 1032 after editing with the portion inside the region 1045 in the second elevation view 1041 to update the elevation view 1050 after updating. Generate
In this manner, the updated elevation view includes the editing information included in the edited first elevation view 1032 and also includes the changed contents in the changed plan view 1040.
[0015]
(2) Details of the embodiment
Next, the present embodiment will be described in detail.
FIG. 2 is a diagram illustrating an example of a functional configuration of the CAD apparatus 1 according to the present embodiment.
Note that the CAD apparatus 1 has a variety of abundant functions, and FIG. 2 selectively shows functions necessary for automatically generating an elevation view from a plan view.
As will be described in detail later, the CAD apparatus 1 stores display means for displaying drawings such as a plan view or elevation view such as a display, a printing device such as a plotter or a printer for printing drawings, and drawing data. A storage device, input means such as a keyboard, a mouse, and a tablet are provided.
The user inputs information from the input unit while viewing the drawing displayed on the display unit, and creates a drawing.
[0016]
The plan view creating / changing unit 3 is a functional unit that creates a plan view using information input by a user and changes a created plan view.
Here, the floor plan referred to in the present embodiment is a drawing that describes a building viewed from above, such as a floor plan that represents a floor plan of each floor or a floor plan created for a constructor based on the floor plan. It is broadly called a plan view.
A drawing for describing a structure projects the internal structure, appearance, cross section, and the like of the structure onto a certain projection surface, and draws the drawing. In the present embodiment, a plan view is an original view projected on a reference projection plane.
The drawing element group 5 is a database that stores drawing elements used when creating a plan view.
Drawing elements are, for example, windows, entrance doors, western-style rooms, Japanese-style rooms, toilets, bathrooms, walls, floors, floor-to-floors, roofs, and other components that make up a building, and are used as parts to handle on CAD equipment. It is sometimes called a pack.
[0017]
These drawing elements include drawing data (also referred to as CAD data) representing a line segment or the like for displaying the drawing elements on the plan view, and various attribute data (also referred to as building data) for specifying the attributes of the drawing elements. It is configured using These drawing data and attribute data are associated with each other by using, for example, the same identifier or assigning an ID used as a key.
[0018]
Various types of attribute data can be considered according to the drawing element. For example, when the drawing element is a window, the external dimensions of the window (length, width, height) and the type of glass (transparent, frosted glass, etc.) And attributes such as the type of window (sash, bay window, sweep window, etc.).
Further, when the drawing element is a wall, the material, the external dimensions of height × width × height, the position of the window frame and the external dimensions of the window frame, the pattern of the wallpaper, and the like are considered.
Some drawing elements, such as editing information such as added information and correction information, which will be described later, include drawing data and do not have attribute data.
[0019]
The drawing elements stored in the drawing element group 5 can be searched and selected from the plan view creating / changing means 3. Then, the user selects a drawing element from the drawing element group 5 on the plan view creation / change means 3 and assigns attribute data to the drawing element (the attribute data can be selected from those prepared in advance in the menu. By specifying a position on the plan view, drawing elements can be arranged on the plan view.
Attribute data is associated with the drawing elements arranged on the plan view in this way, and an elevation view described later can be automatically generated using the height data included in the attribute data.
[0020]
The plan view creation / change means 3 allows the user to freely draw elements such as line segments and arcs in addition to arranging drawing elements on the plan view.
Also, attribute data may be attached to the drawing data of the drawing element drawn on the plan view, and the drawing data and the attribute data may be integrally managed in a database, or the drawing data and the attribute data may be associated with a key. , May be managed by another database.
[0021]
FIG. 3 is a diagram showing an example of a plan view 500 created using the plan view creating / changing means 3.
The building depicted in the plan view 500 is the first floor of a private house. The plan view 500 is a so-called floor plan in which the floor plan of the first floor can be viewed. The plan view 500 defines the basic configuration of the floor plan, and can be used for presentation to a customer (constructor).
[0022]
In the plan view 500, a kitchen 502, a bathroom 504, a toilet 506, a dressing room 508, a staircase 510, an entrance 512, a hall 514, a Western-style room 516, a Japanese-style room 518, a closet 520, a floor space 522, and the like are depicted. The upper part of the drawing is the north side. The bay 516 is provided with a bay window 524 and a sash window 530, and the Japanese-style room is provided with a sash window 531.
The bay window 524 and the sash windows 530 and 531 are associated with attribute data set by the user, such as the height from the floor, which is the bottom of the window frame, the height dimension and the width dimension of the window frame.
[0023]
As described above, the floor plan is shown as the floor plan created by the floor plan creating / changing means 3, but in addition to this, the floor plan creating / changing means 3 may create various floor plans such as a floor plan and a roof plan. You can also.
For example, in the case of a roof plan, if attribute data such as the shape of the roof and the material of the surface (tiles, galvanized iron, etc.) is specified as the attribute, the roof is automatically created.
Furthermore, in the above description, the floor plan of the first floor is shown. In addition, the floor plan of the second floor, the basement, and the like can be drawn. Can be created.
The data of the floor plan of the same building such as the floor plan of each floor and the roof plan is managed as a group of building databases. An elevation view described later is automatically generated using the data of the building database.
[0024]
Returning to FIG. 2, the elevation view automatic generation means 7 (first generation means, second generation means) uses the plan view (floor plan, roof plan, etc.) created by the plan view creation / change means 3. This is a functional unit that automatically generates an elevation view.
Here, the elevation view referred to in the present embodiment is not only a so-called general elevation view showing the appearance of a building as viewed from the front, side, and back, but also a rectangular view (a skeleton of the building is shown). Front, side, and back views). In the elevation, the building is projected on a different projection plane from the plan.
The elevation view automatic generation means 7 searches for drawing elements in the plan view created by the plan view creation / change means 3, and generates an elevation view using the attribute data set for the searched drawing elements.
[0025]
Since the attribute data includes the upper part of the drawing element in the height direction, it can be used to determine the height of the wall, the position of the window on the wall, the position of the roof, and the like.
Also, by using attribute data such as the pattern and color of the wall, the material of the roof surface, and the type of window glass, the appearance of the wall, roof, and window glass can be drawn in an elevation view.
By using the elevation view in this manner, the appearance of the completed building can be confirmed.
[0026]
FIG. 4 is a diagram showing an example of an elevation view 600 automatically generated by the elevation view automatic generation means 7 using a plan view 500 or the like.
The elevation 600 includes a first floor portion 610, a second floor portion 620, a roof portion 630, and the like.
Each part is automatically generated using the corresponding plan view, the first floor part 610 is generated using the plan view 500, and the second floor part 620 and the roof part 630 are each a plan view of the second floor part. Is generated using a roof plan.
[0027]
The drawing element drawn in the elevation view is generated using the attribute data of the corresponding drawing element in the plan view. For example, the attribute data (height data of the bay window 524 and the sash windows 530 and 531 of the plan view 500) Window 524a and sash windows 530a and 531a of the elevation view 600 are generated using the above-described method.
In addition, a space is formed at the position of the sash windows 530a and 531a on the wall 611, and the wall 611 and the sash windows 530a and 531a are not overlapped and displayed. In the elevation 600, symbols such as roof slopes 641, 642 and roof overhang dimensions 645, 646, 647 are also automatically displayed using the rooftop plan attribute data.
[0028]
Returning to FIG. 2, the elevation view editing means 9 is a functional unit for editing the elevation view automatically generated by the elevation view automatic generation means 7 by modifying the elevation view to complete the elevation view.
Normally, automatically generated elevations are not enough, and the user can add new information (characters, line segments, etc.) using general-purpose functions (additions), or modify the automatically generated parts. Finish the elevation.
The user inputs data to the elevation view displayed on the display using a keyboard, a mouse, a tablet, or the like, and corrects the elevation view.
[0029]
FIG. 5 is a diagram showing an example of the elevation view 600b after the drawing 600 (FIG. 4) has been modified by the elevation view editing means 9.
In the elevation 600b, the retouching information 602 to 605 are retouched, the roof inclination 642 is moved, and correction information 642b is applied.
The retouching information 602 to 605 are composed of respective leader lines and text data. For example, the retouching information 602 is based on text data “GL siding method with horizontal siding painting” and a leader line indicating an area to which this information is applied. It is configured. In addition, the inclination 642 of the roof is moved to the left, and correction information 642b is added.
[0030]
The added information 602 to 605 and the correction information 642b are new drawing elements (however, they are composed of only drawing data and have no attribute data).
As described above, a plan view and an elevation view are created, and a desired architectural drawing is obtained by outputting these drawing data from the output unit 17. The drawing data output from the output unit 17 can be used by printing it on a plotter or displaying it on a display, for example.
[0031]
Next, returning to FIG. 2, a mechanism for updating the elevation view when the plan view is corrected will be described.
In drafting work, it is often the case that the elevation view is once finished by the elevation view editing means 9 and then the original plan view is corrected. This corresponds to, for example, a case where the construction owner checks a plan view and an elevation view and requests a design change.
In this way, if you change the floor plan after finishing the elevation (after editing) and then automatically generate the elevation again, edit the contents of the elevation and the changed contents of the floor plan appropriately. The CAD apparatus 1 uses the plan view creating / changing unit 3, the area designating unit 11, the combining unit 13, and the retreating unit 15 in order to create an elevational view (that is, update the elevational view) reflected in the data.
[0032]
The change of the plan view is performed using the plan view creation / change means 3. The created plan view is stored in a storage device (not shown) such as a hard disk, and the plan view is changed by reading the target plan view from the storage device and changing the plan view. The change of the plan view can be performed, for example, by changing the attribute of the drawing element already arranged in the plan view, or adding a new drawing element to the plan view.
For example, by changing the attributes of drawing elements, it is possible to change the size of the room, change the size and type of windows, etc.By adding drawing elements, you can change the balcony outside the garden side window Balconies can be added to those that did not have them.
[0033]
FIG. 6 is a diagram showing an example of a plan view 500b obtained by changing the plan view 500 (FIG. 3) by the plan view creating / changing means 3.
In the plan view 500b, the balcony 540b is newly provided outside the sash windows 530b and 531b, and the sash windows 530b and 531b are changed to a sweeping window (a window in which the bottom of the window frame reaches the floor). .
Then, the elevation view automatic generation means 7 automatically generates an elevation view using the plan view 500b.
[0034]
FIG. 7 is a diagram showing an elevation view 600c automatically generated by the elevation view automatic generation means 7 from the plan view 500b.
As shown in FIG. 7, in the elevation view 600c, the balcony 540c and the sash windows 530c and 531c are appropriately changed in correspondence with the balcony 540b added in the plan view 500b and the sash windows 530b and 530b in which the attribute data is changed. Has been generated. Note that the lower half of the sash windows 530c and 531c is hidden by the balcony 540c and cannot be seen, but the attribute data has been changed to a sweep window.
Note that the elevation drawing 600c does not include the retouched information 602 to 605 of the elevation view 600b (FIG. 5) edited by the elevation view editing means 9.
[0035]
The evacuation unit 15 is a functional unit that temporarily saves the elevation view 600b edited by the elevation view editing unit 9 to a storage device. The evacuation unit 15 can also save the elevation 600b to a storage device, read it out, and provide it to the synthesizing unit 13.
Thus, the changed elevation view 600c generated by the elevation view automatic generation means 7 reflects the changed contents of the plan view 500b, but lacks the contents edited in the elevation view 600b. I have. On the other hand, the elevation 600b evacuated by the evacuation unit 15 holds the content edited by the elevation editing unit 9, but lacks the changed content included in the changed elevation 600c.
[0036]
The area designating unit 11 is a functional unit that designates an area corresponding to a changed portion of the plan view 500b in the elevation 600b evacuated by the evacuation unit 15. For example, the user specifies a closed area on the elevation view 600b displayed on the display so as to include the changed portion. The area is specified, for example, by specifying the point clicked on the elevation view 600 by a mouse operation in a single stroke and specifying the inside of a polygonal circular area generated as a changed portion, or by using the mouse operation. For example, it is specified as a rectangle having two specified points as diagonal lines. On the display, the closed region is visually displayed by being surrounded by a dotted line or the like.
[0037]
FIG. 8 shows a state in which the closed area 650 is designated in the elevation view 600b evacuated by the evacuation unit 15.
In the plan view 500b (FIG. 6), what has been changed is the balcony 540b and the sash windows 530b, 531b, so the corresponding changed portion in the elevation view 600b is inside the closed area 650 surrounded by the dotted line.
The combining unit 13 specifies an area (hereinafter, corresponding area) corresponding to the closed area 650 of the elevation 600b in the elevation 600c. Then, the portion outside the closed region 650 of the elevation 600b and the portion within the corresponding region of the elevation 600c are combined to generate an updated elevation. The synthesized elevation view is output from the output unit 17.
The algorithm by which the combining means 13 combines the elevation views 600b and 600c will be described later using a flowchart.
[0038]
FIG. 9 is a diagram showing an elevation 600d synthesized by the synthesizing means 13. In the elevation 600d, additional information 602 to 605 added in the elevation 600b (FIG. 5), correction information 642b, and a balcony 540c and a sash window 530c changed in the elevation 600c (FIG. 7). 531c is appropriately drawn.
This is because the added information 602 to 605 are outside the closed area 650 in the elevation 600b, while the balcony 540c and the sash windows 530c and 531c are inside the corresponding area of the elevation 600c. As a result, an elevational view 600d including both is obtained.
The functional configuration of the CAD apparatus 1 has been described above. However, this is an example, and does not limit the configuration of the CAD apparatus 1. A configuration that performs equivalent functions is widely included in the CAD apparatus 1.
Further, in the present embodiment, the CAD apparatus 1 processes an architectural drawing. However, the present invention is not limited to this. One or more original drawings (in the present embodiment, a plan view-a floor plan, various floor plans, etc.) , An information processing apparatus that automatically starts other drawings (in this embodiment, an elevation view—an external view of a building, various rectangular views, and the like) is widely included.
[0039]
Next, a procedure of updating an elevation performed by the CAD apparatus 1 will be described with reference to the flowchart of FIG. The operation performed by each functional unit is performed by a CPU (Central Processing Unit) mounted on the CAD device 1 described below in accordance with a predetermined CAD program.
First, a user creates a plan view using the plan view creating / changing means 3 (step 5).
Next, the elevation view automatic generation means 7 automatically generates an elevation view (referred to as a first elevation view) using this plan view (step 10).
Next, the user edits the first elevation view by using the elevation view editing means 9 to correct and edit it, thereby completing the first elevation view (step 15).
Next, the user changes the previously created plan view using the plan view creating / changing means 3 in order to respond to a request from the builder (step 20).
[0040]
Next, after the first elevation view after the editing is saved using the saving means 15 (step 25), the elevation view automatic creation means 7 automatically creates the elevation view using the changed plan view. (Step 30). This elevation is referred to as a second elevation.
Next, the user uses the area specifying means 11 to specify a closed area including a portion to be changed according to the changed plan view in the edited first elevation view (step 35). That is, a part to be rewritten is specified.
Then, the synthesizing unit 13 deletes the portion in the closed area designated in the edited first elevation view (Step 40).
Next, the synthesizing unit 13 specifies, in the second elevation view, a corresponding area corresponding to the closed area specified in the edited first elevation view (Step 45).
Further, the synthesizing unit 13 deletes the portion outside the closed area specified in the second elevation view (Step 50).
[0041]
Next, the synthesizing unit 13 synthesizes a portion outside the closed area of the first elevation view after editing, which remains without being deleted, and a portion within the corresponding area of the second elevation view, and (A third elevation view) is generated (step 55).
Next, the output unit 17 outputs the third elevation view generated by the combining unit 13 (Step 60), and the process ends.
In the above flowchart, the first elevation view after the editing is retracted in step 25, but this is done when the second elevation view is automatically generated by the automatic elevation view generating means 7. This is to prevent a later first elevation view from being overwritten and erased. Therefore, for example, the first elevation view after the editing and the second elevation view are distinguished by an identifier or the like, and the first elevation view after the editing is generated with the automatic generation of the second elevation view. By preventing the data from being erased, the evacuation unit 15 can be omitted.
[0042]
In the above-described flowchart, the closed area is designated in the first elevation view after editing. On the contrary, the closed area is designated in the second elevation view, and the closed area is designated in the first elevation view after editing. It is also possible to configure so as to specify a corresponding area corresponding to this.
Further, for example, there is a case where the processing order can be appropriately reversed, such as steps 20 and 25.
[0043]
Next, a procedure in which the synthesizing unit 13 synthesizes the edited first elevation view and the second elevation view will be described with reference to the flowchart of FIG.
First, in step 40 of the flowchart of FIG. 10, when a drawing element in the closed area specified in the first elevation view after editing is deleted, drawing elements only partially included in the closed area are not deleted. , All drawing elements included in the closed area are to be deleted.
On the other hand, when a drawing element outside the corresponding area set in the second elevation view in step 50 of FIG. 10 is deleted, a part of the drawing element included in the corresponding area is also deleted.
The following processing is performed on the edited first and second elevation views subjected to such deletion processing.
[0044]
The combining means 13 searches for and clips the drawing element in the edited first elevation view in which the drawing element in the closed area has been deleted (step 105).
If the drawing element has not been retrieved (step 110; N), the process ends.
If the drawing element can be retrieved (step 110; Y), the synthesizing unit 13 checks whether the drawing element is accompanied by attribute data (step 115).
This is to judge whether the retrieved drawing element is added or modified information, or whether it is a drawing element that is a component of a building element such as a window or wall, and has no attribute data. In this case, it is added information and correction information, and when attribute data is attached, it can be identified as a drawing element made into parts.
[0045]
If no attribute data is attached to the retrieved drawing element (step 115; N), the synthesizing means 13 copies this drawing element to the second elevation view. The position of the copy destination in the second elevation is the same as the position in the first elevation after editing.
As a result, the added information / correction information included in the edited first elevation can be copied to a predetermined location in the second elevation.
Further, when the first elevation view after correction is configured using a plurality of layers, the first elevation view is copied to the same layer in the second elevation view.
[0046]
On the other hand, when the attribute data is attached to the retrieved drawing element (step 115; Y), the synthesizing unit 13 further searches the second elevation view for the same drawing element as this drawing element, and It is confirmed whether the same drawing element is present in the elevation view 2 (step 125). The identity of the drawing element is determined using the identity of both the drawing data and the attribute data constituting the drawing element.
Then, when the same elevation element does not exist in the second elevation view (Step 125; N), the synthesizing means 13 copies this elevation element to the second elevation view (Step 130). The copy destination position in the second elevation is the same as the position in the first elevation after the correction. In addition, when the first elevation after the correction is configured using layers, the first elevation is copied to the same layer in the second elevation. By this processing, drawing elements that are included in the corrected first elevation but are not included in the second elevation can be copied to the second elevation.
[0047]
On the other hand, if the same drawing element is present in the second elevation (step 125; Y), the synthesizing unit 13 registers the same drawing element in the second elevation (step 135). That is, the drawing elements arranged in the second elevation are stored as they are.
The drawing elements common to the first elevation view and the second elevation view after the modification are the drawing elements that have not been changed when these original plan views are changed, and thus the second drawing elements are not changed. It may be placed in an elevation view.
The above steps 110 to 135 are performed until step 110 becomes N (that is, until all drawing elements have been searched in the edited first elevation view).
The second elevation that has been subjected to the above processing is a third elevation that combines a portion outside the closed region of the edited first elevation and a portion within the corresponding region of the second elevation. It becomes a front view.
[0048]
In the above processing, when the drawing elements in the closed area specified in the first elevation view after editing are deleted, the drawing elements only partially included in the closed area are not deleted, and all of the drawing elements are not deleted. Deletes drawing elements included in the closed area, while deleting drawing elements outside the corresponding area set in the second elevation view, also deletes some of the drawing elements included in the corresponding area. However, the method of deleting drawing elements is not limited to this.
For example, when a drawing element in a closed area specified in a first elevation after editing is deleted, a drawing element that is at least partially included in the closed area is deleted, while a second elevation is set. When deleting the drawing element outside the corresponding area, the part of the drawing element included in the corresponding area may not be deleted.
[0049]
FIG. 12 is a diagram illustrating an example of a hardware configuration of the CAD apparatus 1. FIG. 12 assumes a case where the CAD apparatus 1 is configured using a personal computer and used in a stand-alone manner.
The CAD device 1 is configured by connecting an input device 55, an output device 56, a communication control device 57, a storage device 63, a storage medium drive device 60, an input / output interface 59, and the like to a control unit 51 via a bus line 58. ing.
[0050]
The control unit 51 includes a CPU 53, a ROM (Read Only Memory) 52, a RAM (Random Access Memory) 54, and the like.
The control unit 51 operates according to various programs such as an OS (Operating System) and a CAD program, and performs a predetermined operation specified by the program and controls the entire CAD device 1. In the present embodiment, the CAD apparatus 1 performs a design support process for an architectural drawing.
[0051]
The CPU 53 is a central device of the control unit 51, and loads a program from the ROM 52, the storage device 63, or a storage medium driven by the storage medium driving device 60, and controls the control unit 51 according to the program.
The ROM 52 is a read-only memory that stores various programs, data, parameters, and the like for the CPU 53 to perform various calculations and controls. The ROM 52 is a non-volatile memory, and the stored contents are retained even when the power supplied to the ROM 52 is zero. Since the ROM 52 is a read-only memory, data is not normally written.
[0052]
The RAM 54 is a random access memory used by the CPU 53 as a working memory. The CPU 53 can write and erase programs and data in the RAM 54. In the present embodiment, an area for performing various design support processes such as automatically generating an elevation view from a plan view can be secured in the RAM 54.
[0053]
The input device 55 includes an input device such as a keyboard, a mouse, and a tablet.
The keyboard includes keys for inputting kana and English characters, numeric keys for inputting numbers, various function keys, cursor keys, and other keys.
From the keyboard, information such as characters and numbers can be input to the CAD apparatus 1, and drawing elements can be selected from a menu screen.
Further, for example, a user can input a login ID and a password for logging in to the CAD apparatus 1 or operate various programs from the keyboard.
[0054]
A mouse and a tablet are pointing devices. When the CAD apparatus 1 is operated using a GUI (Graphical User Interface) or the like, predetermined information can be input by clicking a button or an icon displayed on the display device with a mouse or the like.
In the present embodiment, for example, by clicking a command execution button, various commands (such as a command for automatically generating an elevation view from a plan view) are executed, and a drawing element to be arranged in the plan view is selected from a menu. Alternatively, a closed area for synthesizing the second elevation can be designated in the first elevation after editing.
Further, as the input device 55, a device including a group of input buttons dedicated to the CAD device 1 can be used. This is a device consisting of a group of buttons for setting each drawing function, such as a button for drawing an arc, a button for drawing a straight line, and the like. Work can be speeded up and labor can be saved.
[0055]
The output device 56 includes, for example, a display device, a printing device, a plotter, and the like.
The display device is, for example, a CRT (Cathode Ray Tube) display, a liquid crystal display, a plasma display, or the like, and is a device for presenting information such as a plan view and an elevation view on a screen.
The printing device is a device that prints a result of executing a program on a print medium such as paper. In the present embodiment, various design drawings such as a plan view and an elevation view can be printed.
The printing device is configured by various printer devices such as an ink jet printer, a laser printer, a thermal transfer printer, and a dot printer.
2. Description of the Related Art A plotter is a device for plotting a drawing on a sheet of paper with a pencil or a pen, and is used, for example, to draw a drawing on a large sheet such as an A1 plate.
[0056]
The communication control device 57 is a device for connecting the CAD device 1 to a network such as the Internet via a communication line (not shown), and includes a modem, a terminal adapter, and other devices.
The communication control device 57 is connected to, for example, the Internet or a LAN (Local Area Network), and can transmit and receive data to and from a server device and the like connected to these networks.
The communication control device 57 is controlled by the CPU 53 and performs transmission and reception according to a predetermined protocol.
For example, when updating the CAD program 71, the CAD device 1 receives a program for updating the currently held CAD program 71 from the server device, and transmits plan data or elevation drawing data to another server. It can be received from a computer.
[0057]
The storage device 63 includes a readable and writable storage medium, and a drive device for reading and writing programs and data from and to the storage medium. Although a hard disk is mainly used as the storage medium, other storage mediums such as a magneto-optical disk, a magnetic disk, and a semiconductor memory, for example, such as a readable / writable storage medium, may be used.
In the storage device 63, a CAD program 71, a drawing element group 5, an OS 73, other programs 74, other databases, and the like are stored in a predetermined storage area.
The CAD program 71 is read and executed by the CPU 53, for example, so that the plan view creating / changing means 3, the elevation view automatic generation means 7, the elevation view editing means 9, the area designation means 11 shown in FIG. The respective functional units such as the synthesizing unit 13, the evacuating unit 15, and the output unit 17 are configured as software.
The OS 73 is a basic program for causing the CAD device 1 to function, and performs input / output of a file, control of each device connected to the CAD device 1, and the like.
The other programs 74 include various programs such as a Japanese language conversion program and a communication control program for controlling the communication control device 57 and the like to establish communication.
The other database 75 is composed of, for example, a database that stores data created using the CAD program 71, such as a building database.
[0058]
The storage medium drive device 60 is a drive device for reading and writing data by driving a removable storage medium. The removable storage medium, e.g., magneto-optical disks, magnetic disks, magnetic tape, semiconductor memory, paper tape data was punched, and the like CD-ROM. The CD-ROM and the paper tape can only be read. The application software is installed from the storage medium via the storage medium drive device 60, the backup data is written to the storage medium for backing up the building database or the like, the backup data is written to the storage medium. You can also read data.
[0059]
The input / output I / F (interface) 59 is configured by, for example, a serial interface or an interface of another standard. By connecting an external device corresponding to the interface to the input / output interface 59, the function of the CAD apparatus 1 can be expanded. Examples of such external devices include a storage device such as a hard disk, a speaker, and the like.
[0060]
FIG. 13 is a diagram illustrating an example of a system configuration when the CAD system is configured by a network such as a LAN.
The CAD apparatus 1 can be used as a client-server system as shown in FIG. 13 in addition to being used as a stand-alone.
Each of the terminals 82, 82,... (Hereinafter, terminal 82) is provided so as to be connectable to a CAD server 81 via a cable 83.
The terminal 82 includes communication means for communicating with the CAD server 81 via the cable 83, input means such as a keyboard and a mouse, and a display device for displaying drawings.
[0061]
The user can use the CAD function provided by the CAD server 81 from the terminal 82 by using these means.
In this case, since a single CAD server 81 allows a plurality of users to simultaneously use the CAD function, it is possible to reduce costs and simplify maintenance work.
The drawings created by each user may be configured to be stored in the CAD server 81, and the drawing data may be shared among the users. In this way, the design work can be made more efficient.
The created drawing can also be output from a shared plotter (not shown) similarly connected to the network.
[0062]
Further, an authentication server and a billing server may be added to the CAD server 81 to perform a software vendor business. In this method, the functions of the CAD server 81 are provided to the customer user via the Internet or the like, and charging is performed according to the usage time, the usage function, and the like.
[0063]
According to the embodiment described above, the following effects can be obtained.
(1) The first elevation view after editing and the second elevation view automatically started from the changed plan view are combined, and the part and the plane corrected and modified in the first elevation view after editing are combined. It is possible to generate a third elevational view reflecting the changed portion of the figure.
(2) The first elevation view after editing is saved by the evacuation means 15, so that the second elevation view after editing is automatically generated when the second elevation view is automatically generated from the changed plan view. Overwriting by the second elevation can be prevented.
(3) By using the area specifying means 11, it is possible to specify the closed area while visually confirming the closed area in the first elevation view after editing.
(4) Even in the drawings in the same layer, a part corresponding to a part to be changed can be automatically generated by designating a closed region.
[0064]
As described above, one embodiment of the present invention has been described, but the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in each claim.
For example, in the present embodiment, in the first elevation view or the second elevation view after editing, the area corresponding to the location changed in the plan view is specified. It is also possible to specify the area of the edit position of the elevation view and combine the edit position of the first elevation view after editing with the change position (outside the corresponding area) of the second elevation view. .
Further, in the present embodiment, the CAD apparatus 1 for architecture has been described, but this is not limited to the architecture, and another drawing is automatically generated using the attributes of the drawing elements included in the two-dimensional drawing. It can be widely applied to three-dimensional CAD.
[0065]
【The invention's effect】
According to the present invention, a change in a plan view or the like can be appropriately reflected in an elevation view or the like.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining the concept of an elevation update method performed by a CAD apparatus according to an embodiment.
FIG. 2 is a diagram showing an example of a functional configuration of a CAD device according to the present embodiment.
FIG. 3 is a diagram showing an example of a plan view.
FIG. 4 is a diagram showing an example of an elevation view.
FIG. 5 is a diagram showing an example of an elevation view after correction and correction;
FIG. 6 is a diagram showing an example of a plan view after the change.
FIG. 7 is a diagram showing an elevation view automatically generated from the changed plan view.
FIG. 8 is a diagram showing a state where a closed area is designated in the elevation view.
FIG. 9 is a diagram showing an elevation view synthesized by the synthesis means.
FIG. 10 is a flowchart illustrating a procedure for updating the elevation view.
FIG. 11 is a flowchart illustrating a procedure for combining a first elevation and a second elevation after editing.
FIG. 12 is a diagram illustrating an example of a hardware configuration of a CAD apparatus.
FIG. 13 is a diagram illustrating an example of a network configuration of a CAD system.
FIG. 14 is a diagram for explaining a case where an elevation view is automatically generated from a plan view in a conventional CAD apparatus.
[Explanation of symbols]
1 CAD equipment
3 Plan drawing creation / change means
5 Drawing element group
7 Elevation view automatic generation means
9 Elevation editing means
11 Area designation means
13 Synthesis means
15 Evacuation means
17 Output means
51 Control unit
52 ROM
53 CPU
54 RAM
55 input device
56 output device
57 Communication control device
58 Bus Line
59 I / O I / F
60 storage medium drive
63 storage device
81 CAD server
82 terminals
83 cable

Claims (7)

First generation in which a first drawing in which the structure is illustrated on another projection surface is automatically generated using an original drawing in which the configuration of the structure such as an internal structure, an appearance, and a cross section is illustrated on a predetermined reference projection surface. Means,
Editing means for editing the automatically generated first drawing;
Changing means for changing at least a part of the original drawing;
A second generation unit that automatically generates a second drawing illustrated on the other projection plane of the structure using the changed original drawing after the change,
An area specifying means for specifying an area in the edited first drawing or the second drawing after the editing;
Combining means for combining the edited first drawing and the second drawing;
A CAD apparatus comprising:
The combining means, when the area designating means designates an area corresponding to the location changed by the changing means, the edited first drawing corresponding to outside the designated area; and the designated area If the second drawing corresponding to the specified area is synthesized, or if the area specifying means specifies the area corresponding to the location edited by the editing means, the edited area corresponding to the specified area A CAD apparatus for combining a first drawing and the second drawing corresponding to an area outside the designated area. 2. The CAD apparatus according to claim 1, wherein the original drawing is a plan view, and the drawing automatically generated by the first generation unit and the second generation unit is an elevation view. 3. The predetermined drawing is configured using a drawing element having an attribute such as height information, and the first generation unit uses the attribute of the drawing element forming the predetermined drawing to generate the first drawing. The CAD apparatus according to claim 1, wherein the drawing is automatically generated. The changing means changes an attribute of a drawing element constituting the predetermined drawing,
4. The CAD apparatus according to claim 3, wherein the second generation unit automatically generates the second drawing by using an attribute of a drawing element included in the changed predetermined drawing. 5. A saving unit that saves the edited first drawing edited by the editing unit into a storage device;
5. The apparatus according to claim 1, wherein the combining unit combines the edited first drawing saved by the saving unit and the second drawing. 6. 12. The CAD apparatus according to claim 1. In a computer including a first generating unit, an editing unit, a changing unit, a second generating unit, an area specifying unit, and a combining unit,
A first drawing in which the first generating means shows the structure on another projection surface using an original drawing showing the structure of the structure, such as an internal structure, an appearance, and a cross section, on a predetermined reference projection surface; A first generation step of automatically generating
An editing step of editing the automatically generated first drawing by the editing means;
A changing step of changing at least a part of the original drawing by the changing unit;
A second generation step of automatically generating, by the second generation means, a second drawing illustrated on the other projection plane of the structure using the changed original drawing;
An area specifying step of specifying an area in the edited first drawing or the second drawing by the area specifying means;
A combining step of combining the edited first drawing and the second drawing by the combining means;
A CAD data generation method comprising:
In the combining step, in the area specifying step, when the area corresponding to the location changed in the changing step is specified, the edited first drawing corresponding to the area outside the specified area, and the specified area If the area corresponding to the location edited in the editing step is specified in the area specifying step in the area designating step, the edited second drawing corresponding to the specified area A method for generating CAD data, comprising: combining a first drawing with the second drawing corresponding to an area outside the designated area. First generation in which a first drawing in which the structure is illustrated on another projection surface is automatically generated using an original drawing in which the configuration of the structure such as an internal structure, an appearance, and a cross section is illustrated on a predetermined reference projection surface. Features and
An editing function for editing the automatically generated first drawing;
A change function for changing at least a part of the original drawing;
A second generation function for automatically generating a second drawing illustrated on the other projection plane of the structure using the changed original drawing after the change,
An area designating function for designating an area in the edited first drawing or the second drawing after the editing,
A synthesizing function for synthesizing the edited first drawing and the second drawing,
Is a CAD data generation program for realizing by a computer,
In the case where the combining function designates an area corresponding to a location changed by the change function in the area designating function, the first drawing after editing corresponding to an area outside the designated area and the designated area When the second drawing corresponding to the area is synthesized, or when the area specifying function specifies the area corresponding to the location edited by the editing function, the area after the editing corresponding to the specified area is specified. A CAD data generating program for combining a first drawing and the second drawing corresponding to an area outside the designated area.

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