JPH0962867A - Graphic processor and graphic processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a graphic processor/graphic processing method, which restore a two-dimensional drawing drawn by combining plural parts into a three-dimensional shape for the respective parts, calculate the position relations of the restored parts, and improve the accuracy of restoration, processing speed, the visibility of the respective parts, work efficiency and operability. SOLUTION: A two-dimensional drawing input means 6 dividing the plural parts and inputting them as the two-dimensional drawing consisting of three drawings, a three-dimensional shape restoration means 7 calculating parts reference points for the respective parts from the three drawings of the respective parts and restoring them into the three-dimensional shape, a parts arrangement information extraction means 8 calculating a whole reference point showing the position relation of the parts reference points of the respective parts and a three-dimensional parts arrangement means 9 which relatively arranges the three-dimensional shapes of the respective parts based on the calculated whole reference point are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a graphic processing apparatus and a graphic processing method for restoring a three-dimensional shape of a graphic drawn as a two-dimensional drawing, and more particularly to a CAD system (Computer Aid).
The present invention relates to a graphic processing device and a graphic processing method used in ed Design).

[0002]

2. Description of the Related Art In recent years, two parts representing one part, shape, etc.
A graphic processing device that is a three-dimensional shape restoration device that creates a solid model that is a three-dimensional graphic using a three-dimensional drawing has been developed.

A conventional graphic processing device will be described below. Conventionally, in a traditional method for modeling the shape of an object, a three-dimensional drawing is most widely used in a two-dimensional drawing. Create a solid model that is a figure. As a method to check the consistency of elements between each drawing, after restoring the surface from the information of the vertices and ridges of each drawing, various restored surfaces are combined and finally a consistent three-dimensional solid is formed. Is. That is, the vertices appear as points in all the three views. The vertex and its projection point have the same coordinate shape in common coordinates. By utilizing this relationship, the correspondence is adopted between the views to restore the vertices. Next, in each of the three drawings, if a line segment exists between the points corresponding to the vertices, the ridges are restored by connecting the vertices.

Further, in the conventional graphic processing apparatus, for a drawing which is not accurately displayed on the two-dimensional drawing, the position for arranging the data on the three-dimensional coordinate axis cannot be calculated from the two-dimensional drawing data. It could not be recognized as a three-dimensional shape. Therefore, with regard to the two-dimensional drawing data, there is a method of checking whether there is a point that corresponds correctly in terms of the relationship between the plan views, and whether each two-dimensional drawing data can be arranged in a three-dimensional space without contradiction. There are some established methods for checking. In these methods, when correcting inconsistencies and contradictions that have been discovered correctly, how to understand the relationship between the two-dimensional drawing planes is a major issue. A method is adopted in which all possible corrections are added to the two-dimensional drawing only between the drawings and the drawings with no corresponding data.

[0005]

However, in the above-mentioned conventional method, a combination of data in which a three-dimensional shape cannot be restored in a two-dimensional drawing or an assembly drawing in which a plurality of parts are combined is drawn. Or, there is a problem that it is extremely difficult to directly restore a three-dimensional shape by forming a combination of data that cannot form a surface in three dimensions.

The present invention solves the above-mentioned problems of the prior art. In a two-dimensional drawing in which a plurality of parts are combined and drawn, a three-dimensional shape is restored for each part, and the restored three-dimensional shape of each part is restored. Figure processing device that calculates the positional relationship and has excellent operability with restoration accuracy, processing speed, visibility of each part and work efficiency, and restoration accuracy, processing speed, visibility of each part and work An object is to provide a graphic processing method with high efficiency and excellent operability.

[0007]

To achieve this object, the graphic processing apparatus according to claim 1 of the present invention divides a plurality of parts into respective parts and inputs them as a two-dimensional drawing consisting of three views. 2D drawing input means for calculating the part reference point for each part from the three-view drawing of each part, and restoring to the three-dimensional shape 3
A three-dimensional shape of each component is relatively arranged based on the calculated overall reference point, a three-dimensional shape restoring unit, a component placement information extracting unit that calculates an overall reference point indicating a positional relationship between the component reference points of the respective components. And a three-dimensional spatial component arranging means for

According to a second aspect of the present invention, in the graphic processing apparatus according to the first aspect, the two-dimensional drawing input means is provided with a layer for inputting each part or each basic element forming the part. There is.

According to a third aspect of the present invention, in the graphic processing apparatus according to the first or second aspect, the component placement information extraction means or the three-dimensional spatial component placement means detects whether or not there is component interference for each component. The interference detecting means and the three-dimensional spatial component arranging means are provided with a component identifying means for assigning different colors or patterns to the respective components detected as having interference by the component interference detecting means.

According to a fourth aspect of the present invention, in the graphic processing method, a step of inputting a two-dimensional drawing in which a plurality of parts are divided into respective parts and inputted as a two-dimensional drawing consisting of three views, and a three-view drawing of each part is used. A three-dimensional shape restoring step of calculating a part reference point for each part and restoring it to a three-dimensional shape, and a part placement information extracting step of calculating an overall reference point indicating a positional relationship of the part reference points of each part A three-dimensional spatial component placement step of relatively placing the three-dimensional shape of each component based on each position,
Is provided.

According to a fifth aspect of the present invention, in the graphic processing method according to the fourth aspect, the three-dimensional shape restoring step restores the three-dimensional shape for each part or each basic element constituting the part. are doing.

According to a sixth aspect of the present invention, in the graphic processing method according to the fourth or fifth aspect, the component placement information extraction step or the three-dimensional spatial component placement step detects whether or not there is component interference for each component. The interference detection step and the component identification step of assigning a different color or pattern to each component detected to have interference by the component interference detection step are provided.

[0013]

With this configuration, a two-dimensional drawing input means for inputting a plurality of parts into each part as a two-dimensional drawing consisting of three views, and a part reference point for each part from the three views of each part. A three-dimensional shape restoring unit that calculates and restores a three-dimensional shape, a component placement information extracting unit that calculates an overall reference point that represents a positional relationship between the component reference points of each component, and a three-dimensional shape based on the calculated overall reference point Since the three-dimensional spatial component placement means for relatively placing the three-dimensional shape of the component is provided, the relation of the overall reference points between the components is extracted from the two-dimensional drawing to represent the positional relation of the plurality of components. It can be restored to a three-dimensional shape. Furthermore, since each part is restored to a three-dimensional shape, drawing work is extremely easy, correction work can be easily performed, and work efficiency can be improved. Further, in particular, when drawing a two-dimensional drawing for each part, each part or each basic element constituting the part is divided into transparent sheet layers called layers, and input is performed, so that each part has a three-dimensional shape. It can be easily restored, and the processing speed can be increased. Further, the component placement information extraction means or the three-dimensional spatial component placement means detects the component interference for each component and the three-dimensional spatial component placement means interferes with the component interference detection means. By providing a component identification means for assigning a different color or pattern to each component detected to be present,
You can check for interference between parts, and if so,
By changing the color of the interfering shape and displaying it,
The presence or absence of component interference can be recognized at a glance, making it easy to check the complex component configuration. By converting each of the above means into software as a processing step, the accuracy of restoration, the processing speed, the visibility of each component, and the work efficiency can be similarly improved.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A graphic processing apparatus and a graphic processing method according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a device block diagram showing a graphic processing device according to an embodiment of the present invention. Reference numeral 1 is a central processing unit for calculating and processing information, control, etc., 2 is a main storage device for temporarily storing running programs such as an operating system and a window system, and 3 is a memory for storing graphic processing programs and data. A secondary storage device 4, an input device composed of a keyboard, a tablet, a mouse and the like for inputting data such as characters, numerical values and positions, and a display device 5 for displaying windows, graphic elements, characters and the like. In the secondary storage device 3, reference numeral 6 is a two-dimensional drawing input means including a two-dimensional drawing input module for inputting a plurality of parts into each part as a three-view drawing of a two-dimensional drawing. Alternatively, it is provided with a layer for inputting each basic element that constitutes a part. Reference numeral 7 is a three-dimensional shape restoration module including a three-dimensional shape restoration module that restores a three-dimensional shape by calculating a part reference point for each part from the three-view drawing of each part input to the two-dimensional drawing input means 6. Reference numeral 8 denotes a component placement information extraction unit including a component placement information extraction module that calculates an overall reference point that represents a positional relationship between the component reference points of the respective components, and 9 indicates a three-dimensional shape of each component based on the calculated overall reference point. It is a three-dimensional spatial component placement means including a three-dimensional spatial component placement module for placing shapes.

FIG. 2 is a flow chart showing the flow of each step of the graphic processing method in one embodiment of the present invention.
Step 1 is a two-dimensional drawing input step of inputting a plurality of parts for each part as a three-dimensional view of a two-dimensional drawing, and each part or each basic element constituting the part can be input for each layer. Step 2 is 2D drawing input step 1
A three-dimensional shape restoration step of calculating a part reference point for each part from the three-view drawing input for each part and restoring the three-dimensional shape. Step 3 is an overall representation of the positional relationship of the part reference points of each part. It is a component placement information extraction step of calculating a reference point. Further, step 4 is a three-dimensional space component placement step for placing the three-dimensional shape of each component based on the calculated overall reference point, and a component interference detection step for detecting whether or not there is component interference for each component. And a component identification step of assigning a different color or pattern to each component detected to have interference by the component interference detection step.

The principle of the graphic processing apparatus and the graphic processing method configured as described above will be described below with reference to FIGS. 3 to 6. FIG. 3A is a two-dimensional plan view consisting of three views showing an example in which a plurality of components are input for each layer in the graphic processing apparatus according to the embodiment of the present invention, and FIG. It is a two-dimensional top view which shows the assembly figure in which each layer in (a) was piled up. FIG. 4A is a three-dimensional view of the component 11 input to one layer (layer 1) in FIG. 3A, and FIG. 4B is a three-dimensional shape based on FIG. 4A. It is a restored three-dimensional plan view. FIG. 5A is a three-view drawing of the component 12 input to the other layer (layer 2) in FIG. 3A, and FIG. 5B is a three-dimensional view based on FIG.
It is a three-dimensional plan view restored to the three-dimensional shape. FIG. 6 (a)
FIG. 6B is a two-dimensional plan view showing an assembly diagram in which a plurality of layers in FIG. 3B are superposed, and FIG. 6B is FIG. 4B.
FIG. 6 is a three-dimensional plan view that is restored to a three-dimensional shape by superimposing it on the basis of the positional relationship between the respective parts in FIG.

In FIG. 3 (a), as a means for distinguishing a plurality of parts, the parts drawings 101 and 102 are input separately for each display area which is a transparent sheet layer called a layer, and these parts are displayed in an overlapping manner. By doing
It can be seen as one assembly diagram 103 shown in (b). In FIG. 4, as the component reference point A of the component 11 when arranging as the three-dimensional shape shown in FIG.
Front view (front view 101a, plan view 101b, right side view 10
The lower left point of 1c) is defined. Further, in FIG.
As the component reference point B of the component 12 when arranging as the three-dimensional shape shown in FIG. 3, a three-dimensional view of the two-dimensional drawing (front view 102
a, bottom view 102b, right side view 102c), the lower left point is defined. Further, in FIG. 5, the component 11 in FIG.
The component reference point A of is also described. Next, in FIG. 6, 2 in the assembly drawing is set as the overall reference point C of the assembly drawing between the parts in the assembly drawing in which the parts 11 and 12 are combined.
Three-dimensional view of a three-dimensional drawing (front view 103a, plan view 103b,
The bottom left point of the right side view 103c) is uniquely defined. The overall reference point C coincides with the component reference point A. As a result, the arrangement position of each component in the three-dimensional space is determined.

Next, the operation of the graphic processing apparatus and the graphic processing method according to an embodiment of the present invention will be described below. Figure 7
6 is a flowchart showing the operation of the graphic processing apparatus and the graphic processing method according to an embodiment of the present invention. First, as a two-dimensional drawing input step 1, a three-view drawing of each part is input for each layer (S11). Next, as a three-dimensional shape restoration step 2, a surface configuration is performed for each part to restore the three-dimensional shape (S12). Next, the placement position of each placed component is extracted (S13). As shown in FIGS. 4 and 5, this is a component reference point (X-axis direction coordinate and Y-axis direction coordinate) that is the lower left corner of each of the plan view, front view, and right side view in the two-dimensional drawing of each component. Is the minimum point) A,
Extract B.

Next, in step 3 of extracting the component arrangement information, the part reference point A, which is the lower left corner among the part reference points A and B of each part in the state where the part drawings are superposed, is set as the whole assembly drawing. It is defined as the reference point C, and the relative positions of the component reference points A and B between the parts in each plan are taken out (S14).
In the example of the assembly diagram of FIG. 3, when the component reference point A of the component 11 is used as the reference point of the entire assembly as shown in FIG. 4, and when the component reference point B of the component 12 is extracted as shown in FIG. And part 11
Calculate the relationship with.

As a result, in the three-dimensional spatial component placement step 4, as shown in FIG. 6, the component on the two-dimensional drawing is converted into a three-dimensional component of X-axis, Y-axis and Z-axis. The three-dimensional shapes of 11 and the part 12 are arranged in the same three-dimensional space (S15). In the present embodiment, as shown in the three-dimensional shape of FIG. 6, the relative positions of the component 11 and the component 12 are shown as a shift in the Y-axis direction.

Further, when the parts 11 and 12 are arranged in the three-dimensional space according to the arrangement relationship obtained from the two-dimensional drawing as described above, a Boolean operation between the three-dimensional models is performed as a part interference detection step. Thus, it is possible to check the interference of each component in the three-dimensional shape. At this time, if there is an interference, the presence or absence of the interference can be recognized at a glance by displaying the interfering parts in different colors as a part identifying step (S16).

Here, even when one part has a complicated shape, the primitive shape element or the element which can be easily divided is taken out, and these are moved to different layers to be separated into a complicated shape. Can be reconstructed as a combination of several 3D shapes divided into
It is easy to input a two-dimensional figure, the visibility is good, the work efficiency is improved, and the two-dimensional figure can be reconstructed into the three-dimensional shape very easily, and an accurate figure can be obtained.

As described above, according to the present embodiment, when a two-dimensional drawing is drawn for each part, each part or each basic element constituting the part is divided into transparent sheet layers called layers to input data. By doing so, the three-dimensional figure can be easily restored for each part, the drawing work is extremely easy, the correction work can be simplified, and the work efficiency can be improved. Furthermore, the relationship between the parts reference points A and B between the respective parts is represented by the overall reference point C.
Since the three-dimensional shape representing the positional relationship of the plurality of parts can be restored, the positional relationship such as the three-dimensional shape of each part and the arrangement of the parts can be easily understood. Furthermore,
By assigning different colors or patterns to the respective parts detected as having interference, the presence or absence of the interference of the parts can be recognized at a glance, and it is easy to check the complicated part configuration.

[0025]

As described above, according to the present invention, two-dimensional drawing input means for inputting a plurality of parts for each part as a two-dimensional drawing consisting of three views, and three-sided views of each part. A three-dimensional shape restoring unit that calculates a component reference point for each component and restores a three-dimensional shape, a component placement information extraction unit that calculates an overall reference point that represents the positional relationship of the component reference points of each component, and the calculated total Since the three-dimensional space component arranging means for relatively arranging the three-dimensional shape of each component based on the reference point is provided, in a two-dimensional drawing in which a plurality of components are drawn in combination, It is possible to restore the three-dimensional shape, calculate the relationship of the reference points between the parts, and restore the three-dimensional shape expressing the positions of a plurality of parts. The figure processing is excellent in the accuracy of the restoration and the processing speed. The device can be realized. Furthermore, since each part is restored to a three-dimensional shape, it is possible to realize a graphic processing device that is extremely easy to perform drawing work and correction work, and has excellent work efficiency.

In particular, when a two-dimensional drawing is drawn for each part, each part or each basic element constituting the part is divided into transparent sheet layers called layers, and input is performed, thereby making it possible to perform 3 Can be easily restored to a dimensional shape,
It is possible to realize a graphic processing device excellent in high-speed processing and operation efficiency.

Furthermore, the component placement information extracting means or the three-dimensional space component placement means detects the component interference for each component and the three-dimensional space component placement means detects the component interference. By providing a component identification unit that assigns a different color or pattern to each component that is detected as having interference by the means, interference between the components can be checked. By displaying in different colors, it is possible to recognize at a glance whether or not there is interference between parts, it is easy to check the complicated parts configuration, and it is possible to realize a graphic processing device with excellent visibility of each part. it can.

Similarly, it is possible to realize a graphic processing method which is excellent in restoration accuracy, processing speed, visibility of each component, and work efficiency.

[Brief description of drawings]

FIG. 1 is a device block diagram showing a graphic processing device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a flow of steps of the graphic processing method according to the embodiment of the present invention.

FIG. 3A is a two-dimensional plan view consisting of three views showing an example in which a plurality of components are input for each layer in the graphic processing apparatus according to the embodiment of the present invention. A two-dimensional plan view showing a composition in which layers are stacked.

4A is a three-dimensional view of the component 11 input in one layer in FIG. 3A, and FIG. 4B is a three-dimensional plan view restored to a three-dimensional shape based on FIG. 4A.

5A is a three-dimensional view of the component 12 input to another layer in FIG. 3A, and FIG. 5B is a three-dimensional plan view restored to a three-dimensional shape based on FIG. 5A.

FIG. 6 (a) is a two-dimensional plan view showing an assembly diagram in which a plurality of layers in FIG. 3 (b) are superposed on each other. (B) Based on the positional relationship of each part in FIGS. 4 (b) and 5 (b). 3D plan view reconstructed into 3D shape

FIG. 7 is a flowchart showing the operations of the graphic processing apparatus and the graphic processing method according to the embodiment of the present invention.

[Explanation of symbols]

 1 Central Processing Unit 2 Main Storage Device 3 Secondary Storage Device 4 Input Device 5 Display Device 6 2D Drawing Input Means 7 3D Shape Restoring Means 8 Parts Placement Information Extracting Means 9 3D Spatial Parts Placement Means 11, 12 Parts

Claims (6)

[Claims] 1. A two-dimensional drawing input means for inputting a plurality of parts for each part as a two-dimensional drawing consisting of three views.
A three-dimensional shape restoring unit that calculates a part reference point for each part from the three-view drawing of each part and restores it to a three-dimensional shape, and an overall reference point that represents a positional relationship between the part reference points of each part. And a three-dimensional spatial component arrangement means for relatively arranging the three-dimensional shapes of the respective components based on the calculated overall reference points. Graphic processing unit. 2. The graphic processing apparatus according to claim 1, wherein the two-dimensional drawing input means includes a layer for inputting each of the parts or each basic element forming the part. 3. The component placement information extraction unit or the three-dimensional spatial component placement unit detects the component interference for each of the components and the three-dimensional spatial component placement unit. 2. A component identification unit that assigns a different color or pattern to each component detected as having interference by the component interference detection unit.
Alternatively, the graphic processing device according to item 2. 4. A two-dimensional drawing input step of inputting a plurality of parts for each part as a two-dimensional drawing consisting of three views, and a part reference point for each part from the three views of each part. A three-dimensional shape restoring step for calculating and restoring a three-dimensional shape, and a component placement information extracting step for calculating an overall reference point representing a positional relationship between the component reference points of the respective components,
And a three-dimensional spatial component arranging step of relatively arranging the three-dimensional shapes of the respective parts based on the calculated respective positions, the graphic processing method. 5. The graphic processing method according to claim 4, wherein the three-dimensional shape restoring step restores a three-dimensional shape for each layer or for each basic element constituting the component for each layer. 6. The component placement information extraction step or the three-dimensional spatial component placement step detects a component interference for each component, and a component interference detection step causes interference. 6. The graphic processing method according to claim 4, further comprising: a component identification step of assigning a different color or pattern to each of the detected components.