JP7262296B2 - 3D CAD device and 3D CAD program - Google Patents

Description

The present invention relates to a three-dimensional CAD apparatus and a three-dimensional CAD program, for example, an apparatus for creating drawing data having at least x, y, and z coordinate values.

When various drawings such as survey maps and architectural blueprints are displayed on the screen or printed, 3D CAD devices that display the target in 3D are widely used because it is much easier to grasp the target than the display of the plan view. are doing. This three-dimensional CAD device requires at least three spatial coordinate values of x, y, and z.
However, in many cases, conventional CAD devices are created on the assumption that they will be displayed in two dimensions on the screen of the display device. Drawing data created as such two-dimensional CAD data cannot be displayed three-dimensionally because each point has only two coordinate values in plane coordinates.

Therefore, Patent Document 1 proposes a technique for generating three-dimensional CAD data from two-dimensional CAD data.
However, the technique described in Patent Document 1 requires the existence of three types of two-dimensional CAD data: a plan view, a longitudinal section, and a transverse section.

Therefore, for example, when creating three-dimensional CAD data from two-dimensional CAD data that only has a plan view, the height (elevation) coordinate value (z) is individually set for each coordinate point (x, y). input.
However, for example, in two-dimensional CAD data that displays a plan view as shown in FIG. 2, if the coordinate values of each point P (P1, P2, P3, . When the coordinate value of the start point and the coordinate value of the end point representing the are stored, both of them may be stored.
In this way, not only does the data storage format differ depending on the original drawing data, but if the data is stored in a straight line data format, the coordinate values (x, y) of each point P are , or the number of straight lines to be the end points. For example, the coordinate values (x2, y2) of point P2 are stored in three locations: point P2 as the end point of straight line L1, point P2 as the starting point of straight line L2, and point P2 as the starting point of straight line L3. . Therefore, it is necessary to input the value of the height z for the point P2 into three positions for the straight lines L1 to L3, which is complicated.

In addition to the plan view, a three-dimensional coordinate point list listing each three-dimensional coordinate point (x, y, z), that is, the coordinate points (x1, y1), (x2, y2) acquired from the two-dimensional CAD data , (x3, y3) ... and heights z1, z2, ... (z is blank), and a 3D coordinate point list is displayed, and z values corresponding to coordinate points (x, y) are entered sequentially A method to do so is also conceivable.
In this case, by specifying the column for entering the value of the height z, you can input while checking the position by specifying the input point by changing the color of the corresponding point on the displayed plan view. be able to.
Conversely, by designating a coordinate point on the plan view, it is possible to input into the input field of the three-dimensional coordinate point list corresponding to the designated coordinate point.
Whichever method you use to enter the z value, either search on the floor plan for the position corresponding to the input field of the three-dimensional coordinate point list, or It was necessary to search for the input field, and in addition to the complicated input operation, it was necessary to greatly move the line of sight for each coordinate point.

JP 2013-218553 A

An object of the present invention is to facilitate input of a height value z for three-dimensional CAD data.

(1) In the invention according to claim 1, there are provided drawing data acquisition means for acquiring two-dimensional CAD data , plan view display means for displaying a plan view based on the acquired two-dimensional CAD data on a screen , and Numeric value placement means for arranging a numerical value representing the height of each end point in the vicinity of each end point in the plan view of the two-dimensional CAD data , and a coordinate value (x , y) of the coordinate values (x, y, z) of the three-dimensional CAD data corresponding to y), fetching means for fetching the numerical value arranged at the position closest to the end point ; and creation means for creating three-dimensional CAD data having coordinate values (x, y, z) of each end point .
( 2 ) In the invention according to claim 2 , drawing data acquisition means for acquiring drawing data, plan view display means for displaying a plan view based on the acquired drawing data, and vicinity of each end point in the displayed plan view , a numerical value arrangement means for arranging a numerical value representing the height of the end point, and a height z corresponding to the coordinate value (x, y) of the end point in the drawing data displaying the plan view, which is closest to the end point fetching means for fetching the numerical value arranged at a close position , wherein the fetching means fetches the height z of the specific end point up to the numerical value arranged at the position closest to the specific end point. To provide a three-dimensional CAD device characterized in that, when there is another end point whose distance to the numerical value is smaller than the distance, the numerical value arranged at the next closest position is taken.
( 3 ) In the invention according to claim 3 , there is provided capture end point designating means for designating an end point from which the numerical value is to be captured in the plan view on which the numerical values are arranged, wherein the capturing means A three-dimensional CAD apparatus according to claim 1 or claim 2 , characterized in that it captures numerical values for the calculated end points.
( 4 ) In the invention according to claim 4 , there is provided area specifying means for specifying an area in the plan view where the numerical values are arranged, and the capturing end point specifying means selects an end point existing in the specified area. is designated as the end point to which the numerical value is to be taken.
( 5 ) In the invention according to claim 5 , the drawing data acquisition means acquires data in SXF format or DXF format. A three-dimensional CAD device according to claim 1 is provided.
( 6 ) In the invention according to claim 6 , a drawing data acquisition function for acquiring two-dimensional CAD data , a plan view display function for displaying a plan view based on the acquired two-dimensional CAD data , and the A numerical value placement function that places a numerical value representing the height of the endpoint in the vicinity of each endpoint in the plan view of the two-dimensional CAD data , and a coordinate value (x , y) of the coordinate values (x, y, z) of the three-dimensional CAD data corresponding to y), a fetching function for fetching the numerical value arranged at the position closest to the end point; A creation function for creating three-dimensional CAD data having coordinate values (x, y, z) of each end point and a creation function for creating three-dimensional CAD data having coordinate values (x, y, z) of each end point are provided.
(7) In the invention according to claim 7, there is a drawing data acquisition function for acquiring drawing data, a plan view display function for displaying a plan view based on the acquired drawing data, and a vicinity of each end point in the displayed plan view. , a numerical value arrangement function that arranges a numerical value representing the height of the end point, and a height z corresponding to the coordinate value (x, y) of the end point in the drawing data that displays the plan view. A three-dimensional CAD program for causing a computer to implement a capture function that captures the numerical value placed at a close position, wherein the capture function sets the height z of a specific end point to the closest point to the specific end point. A three-dimensional CAD program characterized in that, if there is another end point whose distance to the numerical value is smaller than the distance to the numerical value arranged at the closest position, the numerical value arranged at the next closest position is incorporated. I will provide a.

According to the present invention, by arranging a numerical value representing the height of the endpoint in the vicinity of each endpoint in the displayed plan view, the height z corresponding to the coordinate values (x, y) of the endpoint is obtained. , it is possible to easily input the height value z for three-dimensional CAD data.

1 is a configuration diagram of a three-dimensional CAD device; FIG. FIG. 2 is an explanatory diagram of drawing data and a plan view displayed based on the drawing data; FIG. FIG. 4 is an explanatory diagram showing an outline of a storage format for a coordinate portion of each point in drawing data; 3 is a flowchart mainly showing the operation of altitude input processing in CAD processing. FIG. 4 is an explanatory diagram of a state in which a plan view based on two-dimensional drawing data is displayed; FIG. 10 is an operation explanatory diagram when inputting an altitude value; FIG. 10 is an explanatory diagram of operation when arranging input altitude values; FIG. 10 is an explanatory diagram of a screen in a state where altitude values for each element point are input; It is explanatory drawing of the operation|movement which takes in a numerical value from the input altitude value. FIG. 10 is another explanatory diagram of the operation of capturing an input altitude value; FIG. 10 is still another explanatory diagram of the operation of capturing an input altitude value; 4 is a flow chart showing the operation of numerical value import processing. FIG. 10 is an explanatory diagram of a screen after an input altitude value is captured; FIG. 4 is an explanatory diagram of three-dimensional coordinate data after taking in an altitude value z; It is explanatory drawing of the screen which displayed three-dimensional coordinate data in 3D. FIG. 11 is an explanatory diagram of a modified example of a capturing operation;

(1) Overview of the Embodiment The three-dimensional CAD device 1 of the present embodiment reads two-dimensional CAD data in the form of SXF files and DXF files, and displays its plan view on the screen.
The user arranges an altitude value (numerical value) corresponding to each end point near each coordinate position (end point) of the plan view displayed on the screen.
When the placement of altitude values for all endpoints is completed and the user selects the Import Numerical Value button, for all coordinate positions (endpoints), a numerical value arranged at a position closest to the endpoint is retrieved and Save as the elevation value (z value) of the end point.
The user does not need to move the line of sight because all that is required is to place the input altitude value near the confirmed end point. In addition, the reading of displayed numerical values can be completed with a small number of operations.

Note that the drawing data (two-dimensional CAD data) of the plan view displayed on the screen is saved in a format such as the start point and end point of the straight line L, so that the coordinate values (x, y) of the end point of one are represented by a plurality of elements ( Even if it is stored for the straight line L), the altitude value (numerical value) of 1 placed in the vicinity is automatically set as the coordinate value (z) corresponding to the coordinate value (x, y) of each element Since it is captured, the user does not need to enter duplicate numbers.

(2) Details of Embodiments A three-dimensional CAD apparatus will be described in detail below. In the following description, an example in which the target drawing data is a survey map representing topography is described, but various drawing data such as architectural drawings can be the target.
FIG. 1 is a diagram showing the hardware configuration of a three-dimensional CAD apparatus according to this embodiment.
The three-dimensional CAD device 1 is configured using a personal computer, for example, and includes a CPU (Central Processing Unit) 10, a ROM (Read Only Memory) 11, a RAM (Random Access Memory) 12, an input section 13, and an output section 14. , a communication control unit 15, a storage unit 16, and the like are connected by a bus line.

The CPU 10 is a central processing unit and operates according to various programs stored in the ROM 11 and storage unit 16 . In this embodiment, according to the CAD program 161, the CPU 10 converts the numerical values (height information=elevation value) arranged by the user from the drawing data for two-dimensional display to the plan view displaying the drawing data on the plane coordinates. Drawing data that can be three-dimensionally displayed is created by automatically capturing the elevation value (z) for the point (x, y) of .
The ROM 11 is a read-only memory and stores basic programs and parameters for operating the CPU 10 .

The RAM 12 is a readable/writable memory and provides a working memory when the CPU 10 performs CAD processing.
The RAM 12 temporarily stores, for example, a display drawing 120, an input altitude value 121, an nm value 122, an RZ value 123, . . . during processing of the CAD program.
The display drawing 120 stores drawing data that the user has selected to be displayed on the display 141 .
The input altitude value 121 stores the coordinate values (Xm, Ym) of the arrangement point Qm and the value of the input value (height) Zm, as outlined in FIG. 1(b).

The input value Zm is a numerical value input by the user, and the position (in the same coordinate system as the plan view displayed on the screen) at which the user places the input Zm is the coordinate value (Xm, Ym) of the placement point Qm.
In the nm value 122, n is the value of n at the end point Pn to which the numerical value is to be captured, and m is the value of m at the arrangement point Qm. The number of P and Q) is counted up sequentially.
The RZ value 123 stores the R value and the Z value that are input and updated in the numerical value capturing process, which will be described later. R is updated to the minimum value of the distance from the point (x, y) on the plan view to the arrangement point Qm, Z is the altitude value input by the user, and the updated minimum R is the arrangement point Qm. It is updated to the value of the altitude value Zm.

Returning to FIG. 1A, the input unit 13 includes input devices such as a keyboard and a mouse. A keyboard is an input device for a user to perform various input operations such as input of characters and numerical values such as altitude value Zm. The mouse is an input device used by the user to select an icon displayed on the screen and specify an arrangement point Qm for arranging the input altitude value Zm.

The output unit 14 includes output devices such as a display 141 and a speaker. The display 141 displays a plan view (two-dimensional display) or a 3D view (three-dimensional display) of designated drawing data according to the CAD program 161 .

The communication control unit 15 connects the three-dimensional CAD device 1 to a communication network such as the Internet.
In the communication control unit 15, the CPU 10 communicates with a server device on a communication network, downloads various drawing data, map data, aerial photograph data, etc. from the server, and uploads generated output data to the server. relay the event.

The storage unit 16 includes a large-capacity storage device configured by, for example, a hard disk, and stores a CAD program 161 that causes the CPU 10 to function as the three-dimensional CAD device 1, and a drawing that stores drawing data in various formats. DB 162, other programs and data are stored.
As the data saved in the drawing DB 162, drawing data in various formats such as SXF format and DXF format are saved. These drawing data have point coordinates (x, y) for displaying at least a two-dimensional plan view, and also store the types of graphics to be displayed (straight lines, curves, circles), attributes, and the like. If the drawing data is an architectural drawing, data such as materials, equipment, dimension lines, etc. are also stored.

FIG. 2 shows drawing data and a plan view displayed based on the drawing data.
As shown in FIG. 2, it is assumed that a plan view based on two-dimensional drawing data is displayed.
Then, the coordinate point (x1, y1) of the displayed plan view is the end point P1, the coordinate point (x2, y2) is the end point P2, the coordinate point (x3, y3) is the end point P3, and the coordinate point (x4, y4) is the end point. Let it be P4.
Also, a straight line starting at the endpoint P1 and ending at the endpoint P2 is L1, a straight line starting at the endpoint P2 and ending at the endpoint P3 is L2, and a straight line starting at the endpoint P2 and ending at the endpoint P4 is L3.

FIG. 3 is an explanatory diagram showing an overview of the storage format for the coordinate portion of each point in the drawing data. FIG. 3 shows various drawing data for the plan view shown in FIG.
Drawing data 1 shown in FIG. 3(a) is an example in which coordinate data (x, y) of each end point P1, end point P2, end point P3, . . .

On the other hand, the drawing data 2 in FIG. 3B is an example in which the data is saved in the form of straight lines L1, L2, . For example.
That is, in the case of the straight line L1, the start point coordinates (x1, y1) and the end point coordinates (x2, y2), and in the case of the straight line L2, the start point coordinates (x2, y2) and the end point coordinates (x3, y3) , … are saved.
Drawing data 3 in FIG. 3(c) is an example in which both the coordinates of each end point P1, end point P2, . .

Since two-dimensional drawing data is used as an example in FIG. 2, the altitude value (z) for the corner point P is not stored in each of the drawing data 1 to 3 in FIG.
In this embodiment, at least the coordinates (x, y) of a point on a two-dimensional plane are provided as data, but if there is no height data (z) for the coordinate point, part of the data is missing. It is intended for the drawing data of the case. Then, by a simple operation of the user, drawing data that can be three-dimensionally displayed by taking in the height data z is created.

Next, among the CAD processing executed by the three-dimensional CAD apparatus configured as described above, the operation of the altitude input processing will be mainly described.
FIG. 4 is a flow chart showing the contents of CAD processing.
5 to 12 show display states of the display 141 of the output unit 14 in each process of CAD processing.
This CAD processing is performed by the CPU 10 executing the CAD program 161 in the storage unit 16, and an initial screen for CAD processing is displayed on the display of the output unit 14. FIG.
The CPU 10 monitors selection operations of various icons displayed on the screen and function keys (F keys) of the keyboard.
In the following description, various icons displayed on the screen and function keys are collectively referred to as .about.buttons, and selection of .about.buttons means selection of .about.icons and the like.

Then, the CPU 10 determines whether or not a selection operation requesting altitude input processing has been performed (step 11). When a selection operation requesting a process other than the altitude input process is performed (step 11; N), the CPU 10 executes another process according to the selection operation (step 12), and terminates the process.
On the other hand, if the altitude input process is selected (step 11; Y), the CPU 10 acquires target drawing data and stores it in the display drawing 120 of the RAM 12 (step 13). That is, the CPU 10 displays the drawing data stored in the drawing DB 162 or obtainable via the communication control unit 15 on the display of the output unit 14, obtains the drawing data selected by the user, and displays the displayed drawing 120 in the RAM 12. Save to
Then, the CPU 10 displays a plan view on the display based on the acquired drawing data (step 14).
Although the case where steps 11, 13, and 14 are processed in this order has been described, step 11 can be processed after steps 13 and 14. FIG. That is, the CPU 10 acquires the specified target drawing data according to the user's operation (step 13), displays the plan view on the display (step 14), and then determines whether the altitude input process selection operation has been performed (step 14). 11; Y).

FIG. 5 is an explanatory diagram of a state in which a plan view based on two-dimensional drawing data is displayed.
As shown in FIG. 5, the display 141 of the output unit 14 displays a plan view 142 based on the drawing data selected by the user and a cursor 143 .
Then, the CPU 10 monitors whether the user has selected a character input button (not shown) displayed on the display 141 (step 15), and if any other operation is performed (step 15; N), Other processing (step 12) is performed according to the operation.
On the other hand, when the character input button is selected by the user (step 15; Y), the CPU 10 displays a character input frame 144 on the lower right of the cursor 143 as shown in FIG. The character input frame 144 is composed of a character frame (for inputting numerical values of altitude) and a size frame for designating the size of characters to be displayed.

Next, an altitude value is input and arranged (step 16).
That is, when the user inputs an altitude value (numerical value) by operating the numeric keypad on the keyboard, the CPU 10 displays the input numerical value in the character frame of the character input frame 144 shown in FIG. In the example of FIG. 6, a numerical value of 63.222 indicating an altitude value has been input. Since the displayed plan view 142 is a survey map, the numerical value 63.222 entered in the character box of the character input box 144 is the field system value m and represents 63.222 m.
Then, the user moves the position of the mouse pointer to the arrangement position of the input altitude value by operating the mouse, and designates the arrangement position of the input numerical value by left-clicking.
Here, in this embodiment, since the numerical values arranged closest to the corner point P1, the corner point P2, . . . , the user preferably designates the vicinity of each end point P with the mouse pointer as much as possible.

When the CPU 10 detects that the user has specified an arrangement position, the CPU 10 displays the altitude value at the arrangement position (step 17).
That is, as shown in FIG. 7, the CPU 10 moves the positions of the cursor 143, the character input frame 144, and the left-clicked mouse pointer, and displays a numerical value 145 representing the input altitude value at the position of the cursor 143. . The display of this numerical value 145 is displayed on the plan view 142 .
Furthermore, the CPU 10 sets the position placed by the mouse pointer as an arrangement point Q, and stores the xy coordinate values (X, Y) and the displayed numerical value 145 (63.222 in the case of FIG. 7) in the RAM 12. Save in the input altitude value 121 (see FIG. 1(b)).

7 is an enlarged display of the area surrounded by the dotted line W in FIG. The user can perform an input/arrangement operation while appropriately enlarging or reducing the plan view 142 displayed as shown in FIG.

Next, the CPU 10 determines whether or not the user has performed a capture start operation (step 18). Here, the import start operation is a series of operations required by the user to start import. Details will be described later.
If the capture start operation is not performed (step 18; N), the CPU 10 returns to step 16 and repeats the user's input/arrangement of altitude values (step 16) and altitude value display (step 17).
The user changes (overwrites) the numerical value of the character frame of the character input frame 144 to the numerical value of the next arrangement point Q, designates the position of the next arrangement point Q with the mouse pointer, and left-clicks the mouse.

In FIG. 7, even after the numerical value 145 is displayed on the plan view 142, the input numerical value (63.222) remains in the character frame. You may make it clear the numerical value in a character frame.
Also, in step 16 of inputting and arranging the altitude value, the case where the placement position is specified after the altitude value is entered has been explained. may That is, by designating the vicinity of the end point P (see FIG. 2) of the plan view 142 with the mouse pointer to specify the arrangement point Q, the cursor 143 and the character input frame 144 are moved to the position of the arrangement point Q, and then A numerical value may be entered in the character frame. After inputting the numeric value, the enter button or enter key is operated to display the numeric value 145 at the position of the cursor 143 (placement point Q).

FIG. 8 shows a state in which a numerical value 145 has been placed in the vicinity of the end point P of the plan view 142 of the display 141 .
When the user has finished inputting and arranging the elevation values corresponding to all (or required locations) end points, and the user performs an operation to start capturing (step 18; Y), the CPU 10 displays on the plan view 142. The (arranged) numerical values are taken in (step 19).

Here, the content of the user's capture start operation (step 18) will be described.
9 to 11 are diagrams for explaining each operation by the user when taking in a numerical value from an input altitude value.
As described above, the user's capture start operation is selection of the 3D drawing edit button, designation of the capture range, and selection and approval of the numerical value capture button.
That is, the user selects the 3D drawing edit button after completing the input and arrangement of the altitude values. Next, as shown in FIG. 9, the user designates a capture range 146 for capturing numerical values with respect to the plan view 142 and numerical values 145 displayed on the display 141 . The specification of the capturing range 146 is an operation of specifying two diagonal points of the rectangle of the capturing range 146 by operating the mouse, and various range specifying operations such as an operation of left-clicking on both diagonal points.

When the capture range 146 is specified by the user, the CPU 10 displays a 3D drawing editing bar 150 on the display 141 as shown in FIG.
In this 3D drawing editing bar 150, a Z value input field 151, an auxiliary command field 152, a 3D confirmation button 153, etc. are displayed (details will be described later).
Also, at the position of each end point Pn of the plan view 142, a target circle 147 is displayed to clearly indicate that it is a capture target. Each end point Pn corresponding to the target circle 147 corresponds to each field of the Z value input field 151 . For example, when the n-th column from the top is selected in the Z value input column 151, the target circle 147n of the end point Pn corresponding to the selected column is displayed in a distinguishable manner. For example, by displaying the target circle 147 in a color different from the others, or by changing the circle to a rectangle and displaying it, the selected end point is clearly indicated. Conversely, when the target circle 147n is selected, the selected target circle 147n is similarly displayed in a distinguishable manner, and the corresponding column (nth column) of the Z value input column 151 corresponding to the end point Pn of the target circle 147n is changed to becomes active.

When the user clicks the auxiliary command field 152 on the 3D drawing editing bar 150, the CPU 10 displays a pull-down menu (not shown). Then, when the user selects the numeric value acquisition (near) button from the pull-down menu, the CPU 10 displays a confirmation dialog 154 shown in FIG.
In addition, in the confirmation dialog 154 of FIG. 11, a confirmation message "Acquire a numerical value near the selected change point and set it as the z value" is displayed. A change point in this message means an end point. Therefore, the display of the message may be "...near the change point (end point)...".
When the user selects the cancel button in the confirmation dialog 154, the state (the state in FIG. 10) before the numerical value acquisition (near) button is selected in the pull-down menu of the auxiliary command field 152 is restored.
When the user selects the OK button in this confirmation dialog 154, the CPU 10 judges that the numerical value capture has been approved, and executes the next numerical value capturing process (step 19).

In the import start operation described above, a series of operations from the user's selection of the 3D drawing edit button to the selection of the numerical value import button were described, but the operation is limited to the operation in which the user's import instruction can be confirmed. You may
For example, only selection of the 3D drawing edit button may be taken as the capture start operation, and other operations may be omitted.
Alternatively, the confirmation dialog 154 may be displayed by selecting the 3D drawing edit button, and the selection of the OK button may be taken as the capture start operation.
Furthermore, the operation of selecting the 3D drawing edit button and specifying the capture range 146 may be the capture start operation, or only the capture range 146 specification operation may be the capture start operation.
Also in the case of these modifications, the numerical value acquisition process is executed by performing the above-described acquisition start operation.

FIG. 12 is a flow chart showing the operation of the numerical value capturing process.
In this numerical value acquisition process, the CPU 10 first stores the initial value "1" as the values of n and m in the nm value 122 of the RAM 12 (step 51).
The CPU 10 also stores max as the R value and 0 as the Z value in the RZ value 123 (step 52). Here, the value of R should be larger than the number of endpoints R displayed on the display 141, and a value such as 99999999, for example, is saved.

Next, the CPU 10 acquires the coordinates (xn, yn) of the end point Pn forming the plan view 142 displayed on the display 141 from the display drawing 120 of the RAM 12 (step 53).
The CPU 10 also acquires the coordinates (Xm, Ym) of the arrangement point Qm from the input altitude value 121 (see FIG. 1(b)) of the RAM 12 (step 54).
Then, the CPU 10 calculates the distance Rnm from the obtained end point Pn to the arrangement point Qm (step 55), and compares the calculated distance Rnm with the value of R stored in the RZ value 123 of the RAM 12 (step 56). .

If the distance Rnm is smaller than the R value of the RZ value 123 (step 56; Y), the CPU 10 sets R=Rnm and Z=Zm (step 57). That is, the CPU 10 updates the value of R in the RZ value 123 to the calculated distance Rnm, and updates the value of the input value (height) Zm corresponding to the arrangement point Qm from the input altitude value 121 as the value of Z. .

After updating the values of R and Z, or when the distance Rnm is greater than the R value (step 56; N), the CPU 10 determines whether the value of m is the maximum value (step 58).
Here, the maximum value of m is the number of arrangement points Q stored in the input altitude value 121 of the RAM 12 .
However, when the specified capture range 146 does not include (select) all the arrangement points Q in the acquisition start operation of step 18, it is the number of arrangement points Q existing inside. In this case, the value of m for each arrangement point Q is determined such as Q1, Q2, . . .

If the value of m is not the maximum value (step 58; N), the CPU 10 adds 1 to m (step 59), returns to step 54, and repeats the determination for the next arrangement point Qm (steps 54 to 58). .
On the other hand, if the value of m is the maximum value (step 58; Y), the CPU 10 saves the value of Z as the altitude value zn of the end point Pn, and displays it in the corresponding column of the Z value input column 151 (step 60).
That is, since the Z value stored in the RZ value 123 of the RAM 12 is the input value (height) of the arrangement point Q arranged closest to the end point Pn under judgment, the CPU 10 is stored in the elevation value zn for the endpoint Pn.
The saving of the altitude value zn (=value of Z) for the end point Pn is saved according to the format of the drawing data saved in the display drawing 120 of the RAM 12 . Drawing data after storage will be described later with reference to FIG.

FIG. 13 shows the display state of the display 141 after the input altitude value is captured.
As shown in FIG. 13, in step 60, the CPU 10 displays the Z value saved as the altitude value zn of the endpoint Pn in the column corresponding to the endpoint Pn in the Z value input column 151 of the 3D drawing editing bar 150.
The CPU 10 sequentially displays the Z value in the Z value input field 151 each time the arrangement point Q (Z value in step 60) arranged closest to each end point Pn is determined. After determining the value, it may be displayed in the Z value input field 151 . In this case, the Z value determined for each end point Pn is stored in the RAM 12 .

After saving and displaying the value of Z in the altitude value zn of the end point Pn (step 60), the CPU 10 determines whether the value of n is the maximum value (step 61).
Here, the maximum value of n is the number of end points P of the plan view 142 displayed on the display 141 and is obtained from the display view 120 saved in the RAM 12 .
However, as with the maximum value of m at the arrangement point Qm, if the specified capture range 146 does not include (select) all the endpoints P in the capture start operation of step 18, the inner is the number of endpoints P present in . In this case, the value of n for each end point P is determined such as end point P1, end point P2, . . .

If the value of n is not the maximum value (step 61; N), the CPU 10 adds 1 to n (step 62), then returns to step 52 and repeats the determination for the next end point Pn (steps 52-61).
On the other hand, if the value of n is the maximum value (step 61; Y), the CPU 10 completes the acquisition of numerical values for all end points P, and thus ends the numerical value acquisition subroutine and returns to the main routine of FIG. return.

FIG. 14 is an explanatory diagram of three-dimensional coordinate data after taking in the altitude value z.
FIGS. 14A to 14C show three-dimensional coordinates after the elevation value z is captured by the numerical capturing process corresponding to each of the two-dimensional drawing data shown in FIGS. 3A to 3C. Of the data, the coordinates of each point are shown.
In the example of FIG. 14A, by importing the altitude value z into the two-dimensional drawing data of FIG. data is created.
In the example of FIG. 14B, by importing the altitude coordinate z into the two-dimensional drawing data of FIG. zn) is created.
In the example of FIG. 14(c), the coordinates (x, y, z) of each end point Pn, the starting point coordinates (xn, yn, zn) of each line Ln, Three-dimensional drawing data including end point coordinates (xn, yn, zn) is created.

The three-dimensional coordinate data after these altitude values z are taken in are saved in the RAM 12 from which the display drawing 120 is read by the user's operation or at the end of the CAD processing. That is, if the drawing DB 162 of the storage unit 16 is read from, the drawing DB 162 is updated. Also, if it is obtained from the communication control unit 15, the three-dimensional coordinate data obtained by capturing the altitude value z is transmitted to the source of the acquisition.
However, if the user selects not to update the original data based on the three-dimensional coordinate data after the altitude value z is taken, it is possible to maintain the original two-dimensional drawing data. It is also possible to save the three-dimensional coordinate data separately from the original two-dimensional drawing data by user's selection.

Returning to the main routine of FIG. 4, when the numerical value capturing process (step 19) ends, the CPU 10 confirms whether or not the 3D confirmation button 153 has been selected (step 20).
When an operation other than the 3D confirmation button 153 is selected (step 20; N), the CPU 10 executes other processing according to the selection operation (step 12) and ends the processing.

On the other hand, when the 3D confirmation button 153 is selected (step 20; Y), the CPU 10 performs 3D display based on the 3D coordinate data after the altitude value z is captured (step 21).
That is, when the user selects the 3D confirmation button 153 of the 3D drawing edit bar 150, the CPU 10 displays a 3D drawing 160 on the display 141 as shown in FIG.
This 3D diagram 160 is displayed three-dimensionally using the captured altitude value z corresponding to the plan view 142 displayed two-dimensionally on the display 141, and is displayed on a separate screen from the plan view 142. be done.
The display screen of the 3D drawing 160 returns to the state before the 3D confirmation button 153 was selected by selecting a 3D display end button or a return button (not shown).

Then, the CPU 10 determines whether or not the end of the CAD process is selected (step 22), and if another process is selected (step 22; N), the other process is performed (step 12). , end is selected (step 22; Y), the process is terminated.

As described above, according to the CAD processing of the present embodiment, numerical values 145 displayed in the vicinity of each end point on the two-dimensionally displayed plan view 142 are used as the elevation value z of the end point P (coordinates x, y). Since it is automatically captured, the user only needs to place the input elevation value near the confirmed end point, and there is no need to move the line of sight to confirm the match with the target end point each time a numerical value is entered. In addition, it is not necessary to move the line of sight for confirmation.
In addition, the user can complete the acquisition of the displayed numerical value with a small number of operations.

Although the processing contents of the three-dimensional CAD apparatus and the three-dimensional CAD program have been described above, the present invention is not limited to the described embodiments, and various modifications can be made according to the invention described in the claims. is.
For example, in the above-described embodiment, the numerical value 145 (=Zm) displayed at the arrangement point Qm closest to the target endpoint Pn is automatically captured as the altitude value zn for the endpoint Pn. , and the position of the numerical value 145 placed at the placement point Qm, there is a possibility that the elevation value z of the end point Pn that is different from the user's intention may be captured.
That is, when the numerical value 145 arranged at the arrangement point Q is closest to the end point P not intended by the user, when the numerical value 145 arranged at one arrangement point Q is incorporated into a plurality of end points P, or when the end point P There may be numerical values 145 that are not captured in .

16A and 16B are explanatory diagrams of a first modified example of the capturing operation.
FIG. 16 shows a state in which the user has arranged numerical values (=Zm) at arrangement points Q1, Q2, Q3 with respect to end points P1, P2, P3, .
The user selects and arranges the arrangement points Q so that the input numerical values do not overlap with the corner points P and straight lines connecting the corner points forming the plan view 142 . For example, the user arranges the numerical value "35.220" for the endpoint P2 at the arrangement point Q2 that does not overlap the straight line connecting the endpoints P2 and P4.
However, since the distance R23 between the end point P2 and the arrangement point Q3 is closer (the distance R23 is the shortest) than the distance R22 between the end point P2 and the arrangement point Q2 calculated in the numerical value acquisition process, the arrangement point Q3 is taken as the altitude value z of the end point P2.
In the case of the corner point P3 as well, since the distance R33 to the arrangement point Q3 is the shortest, the numerical value "34.252" arranged at the arrangement point Q3 is taken as the altitude value z of the corner point P3.

Therefore, in the first modified example, in the numerical value capturing process, the numerical value (=Z) arranged at one arrangement point Qm is captured at one end point Pn, and there is no numerical value that has not been captured. .
As a process for that, in the first modification, between (step 58; Y) and (step 60) in FIG. value) into the altitude value zn of the end point Pn, the following processing is performed.

That is, in order to make it possible to determine whether or not the numerical value (=Z) of the arrangement point Qm to be taken in has already been taken in, the corresponding arrangement point Qm of the input altitude value 121 (see FIG. 1(b)) store the capture tip point Pn in .
Then, in the processing of the other end point Pn, if the fetching end point Pn' is stored at the arrangement point Qm to be fetched, the following processing is performed to avoid duplicate fetching. Here, the n' of Pn' is not the n of Pn that is currently being judged, but the n when the captured corner point Pn is stored in the arrangement point Qm of the input altitude value 121. FIG.

Processing for avoiding duplicate capture will be described with reference to FIG.
In FIG. 16, the user places the altitude value z=35.220 for the endpoint P2 at the arrangement point Q2, but the arrangement point Qm at the shortest distance from the endpoint P2 (n=2) is Q3 (m=3). be. Therefore, the CPU 10 takes in the numerical value of the arrangement point Q3=34.252 as the altitude value z2 of the end point P2, and stores the take-in tip point Pn=P2 at the arrangement point Q3 of the input altitude value 121. FIG.

Then, in the fetching process for the other endpoint Pn=P3, the arrangement point Qm at the shortest distance from the endpoint P3 is Q3 (m=3). The CPU 10 confirms whether or not the fetching tip point Pn is saved in the input altitude value 121 of this arrangement point Q3, and determines that the fetching tip point P2 is saved.
Therefore, the CPU 10 compares the distance R33 from the currently determined end point P3 to the arrangement point Q3 with the distance R23 from the fetch end point P2 to the arrangement point Q3, and places the numerical value of the arrangement point Q3=34.252. Let the altitude value z of the end point with the shortest distance from the point Q3 be taken.
In the case of FIG. 16, since R23>R33, the CPU 10 takes in the numerical value of the arrangement point Q3=34.252 as the altitude value z3 of the end point P3, and takes in the numerical value of the arrangement point Q3=34.252. The fetching end point P2, which has already been stored in the arrangement point Q3 with the value 121, is changed to the fetching end point P3.

Furthermore, the CPU 10 changes the numerical value of the fetched arrangement point Q3=34.252 to the correct numerical value for the fetched end point P2 (before change) stored at the arrangement point Q3 of the input altitude value 121. do. That is, the CPU 10 obtains from the corner point P2 the arrangement point Q2 (distance R22), which is the arrangement point Qm next closest to the arrangement point Q3 (distance R23), and converts the saved value of the altitude zn of the corner point P2 into the numerical value of the arrangement point Q2. = 35.220.

On the other hand, although different from the case of FIG. 16, if R23<R33, the CPU 10 obtains an arrangement point Qm that is next closest to the arrangement point Q2 from the end point P3, and the arrangement point Qm is arranged at the arrangement point Qm. The obtained numerical value is taken in as the altitude value z3 of the end point P3. Also, the fetching tip point P3 is stored in the input altitude value 121 of the arrangement point Qm.

As described above, according to the first modified example, as a general rule, the numerical value arranged at the closest arrangement point Q is taken as the altitude value z of the end point P. However, if there is another end point P with a shorter distance R to the arrangement point Q, the numerical value arranged at the next closest arrangement point Q is taken.
As a result, the numerical value arranged at the arrangement point Q is taken in as the altitude value z of the end point P located closest to the arrangement point Q. FIG.
According to this first modification, in the numerical value capturing process, the numerical value (=Z) arranged at one arrangement point Q is captured as the elevation value z of a plurality of corner points P, and the numerical value not captured is never exist.

Also, in the above-described embodiment and the first modified example, a case has been described in which the elevation value z of each end point Pn is taken in after the user has arranged the numerical value 145 at all/a plurality of arrangement points Qm.
On the other hand, in the second modified example, every time the user arranges a numerical value 145 at one arrangement point Q, the value of the numerical value 145 is taken.
In this case, the numerical value 145 arranged at the arrangement point Q is incorporated into the altitude value z of the corner point P at the shortest distance from the arrangement point Q. FIG.
According to the second modified example, the import start operation (step 18) in the embodiment and the first modified example is not required, so the user's operation can be simplified.

In the above-described embodiments and modified examples, the target drawing data is a survey map representing topography, but it is possible to target various drawing data such as architectural drawings.
However, in cases other than the survey map, the numerical value 145 placed on the plan view 142 by the user is captured as the height z of the end point P (coordinates x, y), not the altitude value z.
That is, the altitude value z in the embodiment is a concept included in the height z.

1 three-dimensional CAD device 10 CPU
11 ROMs
12 RAMs
120 display drawing 121 input altitude value 122 nm value 123 RZ value 13 input unit 14 output unit 141 display 142 plan view 143 cursor 144 character input frame 145 numerical value 146 capture range 147 object circle 150 3D drawing editing bar 151 Z value input field 152 Auxiliary command column 153 3D confirmation button 154 Confirmation dialog 160 3D drawing 15 Communication control unit 16 Storage unit 161 CAD program 162 Drawing DB

Claims (7)

drawing data acquisition means for acquiring two-dimensional CAD data ;
a plan view display means for displaying a plan view based on the acquired two-dimensional CAD data on a screen ;
a numerical value arrangement means for arranging a numerical value representing the height of each end point in the vicinity of each end point in the plan view of the two-dimensional CAD data displayed on the screen ;
As the height z of the coordinate values (x, y, z) of the three-dimensional CAD data corresponding to the coordinate values (x, y) of the end point in the two-dimensional CAD data displaying the plan view on the screen , a capturing means for capturing the numerical value arranged at a close position ;
creating means for creating three-dimensional CAD data having the coordinate values (x, y, z) of the captured end points;
A three-dimensional CAD device comprising: drawing data acquisition means for acquiring drawing data;
a plan view display means for displaying a plan view based on the acquired drawing data;
a numerical value arrangement means for arranging a numerical value representing the height of each end point in the vicinity of each end point in the displayed plan view;
an acquisition means for acquiring the numerical value located closest to the end point as the height z corresponding to the coordinate value (x, y) of the end point in the drawing data representing the plan view;
and
The fetching means, as the height z of a specific end point, when there is another end point whose distance to the numerical value is smaller than the distance to the numerical value arranged at the position closest to the specific end point, the following Take in numbers placed close to ,
A three-dimensional CAD device characterized by: In the plan view on which the numerical values are arranged, a capturing end point specifying means for specifying an end point to be captured in the numerical value,
the capturing means captures numerical values for the specified endpoints;
3. The three-dimensional CAD apparatus according to claim 1 or 2, characterized by: An area designating means for designating an area in the plan view where the numerical values are arranged,
The capture end point designating means designates an end point existing within the specified area as an end point to be captured in a numerical value.
4. The three-dimensional CAD apparatus according to claim 3 , characterized by: The drawing data acquisition means acquires data in SXF format or DXF format,
The three-dimensional CAD apparatus according to any one of claims 1 to 4, characterized in that: A drawing data acquisition function for acquiring two-dimensional CAD data ;
A plan view display function for displaying a plan view based on the acquired two-dimensional CAD data on a screen;
a numerical value arrangement function for arranging a numerical value representing the height of each endpoint in the vicinity of each endpoint in the plan view of the two-dimensional CAD data displayed on the screen ;
As the height z of the coordinate values (x, y, z) of the three- dimensional CAD data corresponding to the coordinate values (x, y) of the end point in the two-dimensional CAD data displaying the plan view on the screen , a capture function that captures the numerical values arranged at close positions ;
a creation function for creating three-dimensional CAD data having the coordinate values (x, y, z) of each captured end point;
A three-dimensional CAD program characterized by realizing on a computer. Drawing data acquisition function for acquiring drawing data,
a plan view display function for displaying a plan view based on the acquired drawing data;
a numerical value arrangement function for arranging a numerical value representing the height of each endpoint in the vicinity of each endpoint in the displayed plan view;
a capturing function of capturing the numerical value located closest to the end point as the height z corresponding to the coordinate value (x, y) of the end point in the drawing data displaying the plan view;
A three-dimensional CAD program for realizing on a computer,
If there is another endpoint with a smaller distance to the numerical value than the distance to the numerical value arranged at the position closest to the specific endpoint as the height z of the specific endpoint, the capturing function is as follows: Take in numbers placed close to ,
A three-dimensional CAD program characterized by:

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