JP4724445B2 - Information processing apparatus, control method, and program - Google Patents

Description

  The present invention relates to an information processing apparatus, a control method, and a program applied when a 3D model (3D shape) is created using 3D-CAD (3 Dimension-Computer Aided Design).

  2. Description of the Related Art Conventionally, there is a computer design support system that uses 3D-CAD to design an article having a three-dimensional shape (hereinafter simply referred to as a part) such as a product or a part constituting a product or a unit. When designing a part, a 3D model of the part is created by 3D-CAD, and attribute information such as dimensions, dimensional tolerances, geometrical tolerances, notes, symbols, and the like is input to the 3D model. The attribute information is added to an element such as a 3D model, a surface or edge of the 3D model, or a vertex of the 3D model.

  The above 3D model and attribute information are information for processing, inspecting, assembling, or maintaining parts. From “input operator (designer)” to “viewing operator (processing, manufacturing, inspection, etc.) Information) must be communicated in an easy-to-understand, efficient and error-free manner.

  In the information processing apparatus using 3D-CAD as described above, when adding dimensions to the 3D model, if two elements (for example, two vertices) are not in the same plane with respect to the projection direction of the 3D model, It is known that both lead-out lines are "<"-shaped lines (for example, see Patent Document 1).

  In addition, the present applicant, when adding attribute information to the 3D model, adds attribute information with good operability, visibility and efficiency, and efficiently uses the added attribute information. For the purpose of efficiently creating a part using the 3D model and attribute information, attribute placement plane setting means for setting a virtual plane associated with the attribute information, and associating the attribute information with the virtual plane An information processing apparatus having storage means for storing the information is disclosed (for example, see Patent Document 2).

In such an information processing apparatus, when inputting attribute information for a fine and complex partial shape of the 3D model, the display state is set to an appropriate display state that can be sufficiently understood by enlarging the attribute information. The purpose is to provide an appropriate display state to the “viewing operator” so that the dimensions and the like become appropriate sizes. For this reason, the attribute arrangement plane has a region, the 3D model shape in this region and the attribute information input to the 3D model element in the region are displayed, and has a function to be associated with the attribute arrangement plane. Has been put to practical use.
Japanese Patent Publication No. 6-3606 (Left lines 14-27 on page 3) JP 2002-324086 A

  Naturally, in the information processing apparatus using 3D-CAD of the conventional example, a device for making the attribute information added to the 3D model easier to see is made.

  For example, in Patent Document 1, a lead line is not bent into a “<” shape, and is drawn from an element (ridge line or vertex) located on the same plane with respect to the projection direction, or only one of the lead lines is “<”. A device has been disclosed in which the dimensions are arranged on the same surface by bending into a letter shape.

  Further, Patent Document 2 discloses a device for arranging attribute information associated with an attribute arrangement plane on the same plane, that is, the attribute arrangement plane.

  However, there is no mention of the complexity and difficulty in viewing the attribute information based on the three-dimensional arrangement based on the lead-out position of the leader line for clearly indicating the association between the element of the 3D model and the attribute information.

  For example, in the 3D model 1 shown in FIG. 2A, attribute arrangement planes 2, 3, 4, and 5 are set as shown in FIG. FIG. 4 is a diagram in which the so-called face-to-face display states of the attribute arrangement planes 2, 3, 4 and 5 viewed from the normal direction of the respective attribute arrangement planes are shown side by side. In the attribute arrangement planes 2, 3, 4 and 5, the dimensions 2a to 2d, the dimensions 3a to 3c, 4a to 4c and the dimension 5a are associated with each other and displayed face to face.

  These dimensions are added to each surface of the 3D model 1 and are drawn from any vertex of each surface. Therefore, for example, when the dimension associated with the attribute arrangement plane 2 is viewed three-dimensionally, as shown in FIGS. 5 (a) and 5 (b), depending on the drawing position of each dimension 2a to 2d, Even if the display looks the same, the display will change greatly. That is, the lead line having the dimension shown in FIG. 5B is unnecessarily long and complicated and difficult to see such as crossing the 3D model 1, but FIG. 5A is simple and easy to see.

  Even in the case of several dimensions such as dimensions 2a to 2d as described above, the visibility changes greatly depending on how the dimension lead lines are drawn, and tens to hundreds of dimensions are associated with one attribute arrangement plane. In some cases, it is essential to make the attribute information easy to see when displaying three-dimensionally.

  In addition, when an area is set on the attribute arrangement plane to which the dimension is associated and the attribute information input to the 3D model shape in this area and the 3D model element in the area is displayed in an easy-to-see manner, If it is pulled out of the area, it is possible that a problem such as “I do not know where the dimension is input when the inside of the area is displayed in an easy-to-see manner” may occur. Here, this problem will be described with reference to FIG.

  An attribute arrangement plane 5 is set in the 3D model 1 shown in FIG. A target area 51 is set in the attribute arrangement plane 5, and a dimension 5a is associated therewith. Here, the drawing position on the plane 1z side of the dimension 5a is the vertex 1u outside the region as shown in FIG. FIG. 12A shows the 3D model shape in the target area 51 of the attribute arrangement plane 5 in an easily understandable manner and the contents of the attribute information associated with the 3D elements in the target area 51 are easily understood. This is the state that is displayed. However, in this display state, it is not known where the dimension 5a is added, and in order to understand the added position, an extra operation such as reducing the display or using a dimension highlight function is required. Become.

  On the other hand, an operator of 3D-CAD (for example, a product designer) must create attribute information such as dimensions of several hundred to several thousand when a complicated 3D model is obtained. Furthermore, operations such as modification of the pull-out position to make each attribute information easy to see in three dimensions increases the load on the product designer and increases the number of man-hours in the product design process, resulting in parts. There arises a problem that the number of man-hours for the entire production increases or a part creation period takes a long time.

  An object of the present invention is to provide an information processing apparatus, a control method, and a program that enable an operator to control the extraction position of attribute information to be added to an element of a three-dimensional model and create easy-to-read attribute information without increasing the load on the operator Is to provide.

To achieve the above object, an information processing apparatus of the present invention is an information processing apparatus for displaying attribute information of a three-dimensional model, and detects a position where an element of the three-dimensional model is selected. and means, in response to said display area of the detection position and the element to set the point on the element in extended position of the attribute information, the display means the lead wire from said extended position to said attribute information And a control means for displaying.

In order to achieve the above object, an information processing apparatus control method of the present invention is an information processing apparatus control method for displaying attribute information of a three-dimensional model, wherein an element of the three-dimensional model is selected. a detection step of position detecting means detects a, in response to said display area of the detection position and the element to set the point on the element in extended position of the attribute information, the from the extended position And a control step for causing the display means to display the lead lines up to the attribute information on the display means.

  According to the present invention, the operator can control the extraction position of the attribute information by the selection position when selecting the element of the three-dimensional model to which the attribute information is added. As a result, it is possible to reduce the load on the operator, the man-hours involved in creating parts and products, and the creation period of parts and products. Further, when the target area is set on the attribute arrangement plane to which the attribute information is associated, the attribute information can be surely extracted from the target area, thereby increasing the load on the operator (for example, product designer). And easy-to-read attribute information can be created.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of the information processing apparatus according to the first embodiment of the present invention.

  1, the information processing apparatus is configured as a computer system that can be designed by 3D-CAD, and includes a CPU 21, a ROM 22, a RAM 23, an operation unit 24, a display unit 25, an external storage device 26, and a system bus 27. Yes.

  The CPU 21 controls the entire information processing apparatus, and executes the processes shown in the flowcharts of FIGS. 6 and 18 based on the CAD program. The ROM 22 stores basic programs and fixed data. The RAM 23 is used as a work area for the CPU 21 and a temporary storage area for data, and stores attribute information in association with an attribute arrangement plane described later. The operation unit 24 is used for inputting data and giving instructions when an operator designs on the information processing apparatus, and includes a keyboard and a mouse. The display unit 25 displays a 3D model or the like. The external storage device 26 stores a CAD program. The system bus 27 is a common signal path that connects the above-described units.

  In the present embodiment, the configuration of the 3D model and the creation of a part utilizing the 3D model and attribute information are the same as in the conventional example (Patent Document 2), and the description will be omitted or simplified as appropriate. Further, in the present embodiment, for the sake of simplification, a relatively simple part as shown in FIG. 2 will be described as an example. However, the idea of the present invention is a complex having several hundred to several thousand elements. Of course, the present invention can be applied to parts having various shapes.

  FIG. 2A is a diagram illustrating an example of a 3D model, and FIG. 2B is a diagram illustrating an example of the 3D model viewed from another direction. FIG. 3 is a diagram illustrating a state in which an attribute arrangement plane is set in the 3D model.

  2 and 3, virtual attribute arrangement planes 2, 3, 4, and 5 are set in the 3D model 1 as shown in FIG. The attribute arrangement planes 2, 3, and 4 are set in parallel to the surfaces 1a, 1b, and 1c, respectively, and separated from the surfaces 1a, 1b, and 1c by a predetermined distance. Further, the attribute arrangement plane 5 is set in parallel to the surface 1 a and at the same position as the attribute arrangement plane 2, as with the attribute arrangement plane 2.

  Further, a target area 51 is set in the attribute arrangement plane 5, and the shape part of the 3D model in the target area 51 and the attribute information input to the shape part are displayed and associated by the attribute arrangement plane 5. It is shown that it is targeted. Here, the target area 51 is also displayed on the attribute arrangement plane 2, indicating that there is an attribute arrangement plane 5 that expresses the inside of the target area 51 in detail.

  FIG. 4 is a diagram illustrating a 3D model and attribute information viewed from the normal direction of the attribute arrangement plane.

  In FIG. 4, the attribute arrangement planes 2, 3, 4 and 5 are associated with attribute information of dimensions 2a to 2d, dimensions 3a to 3c, dimensions 4a to 4c and dimension 5a, respectively. Each dimension is created using the surface of the 3D model 1 as an element, and a leader line is drawn from any vertex included in the surface.

  FIG. 5A is a diagram showing a lead line having a length dimension, and FIG. 5B is a diagram showing a case where the lead line having a length dimension is longer than necessary.

  In FIG. 5, the dimension 2a (dimension “80 ± 0.1”) is created using the surface 1c and the surface 1d (see FIG. 2) of the 3D model 1 as elements. Any one of the vertices 1e, 1f, 1g, 1h, 1i or 1j is selected as the drawing position from the surface 1c, and the vertices 1k, 1l, 1m, 1n, 1p, 1q, 1r are selected as the drawing positions from the surface 1d. Alternatively, any one of 1s is selected and a lead line is drawn.

  The lead line is drawn to the attribute arrangement plane 2 in the normal direction of the attribute arrangement plane 2 from the vertex 1e and the vertex 1k of the 3D model 1 as in the dimension 2a associated with the attribute arrangement plane 2, for example. 3D model 1 associated with the second lead line portion 105 and the second lead line portion 106 drawn to the arrangement position of the dimension 2a (near both ends of the dimension line 107 of the dimension 2a) on the attribute arrangement plane 2. The association with the element of is specified. Here, the second lead line portion 106 corresponds to a so-called 2D (two-dimensional) drawing auxiliary line.

  Next, processing relating to input of attribute information, which is the main focus of the information processing apparatus according to the present embodiment, will be described with reference to FIGS. Here, first, the dimension 2a associated with the attribute arrangement plane 2 is taken as an example.

  FIG. 6 is a flowchart illustrating processing relating to input of attribute information in the information processing apparatus. A program for executing this processing is stored in the external storage device 26 as a part of the CAD program.

  In FIG. 6, the CPU 21 of the information processing apparatus activates a CAD program based on an operator instruction, and displays an attribute information creation menu on the display unit 25. When the operator selects length dimension creation from the attribute information creation menu by the display, the CPU 21 launches a length dimension creation command and displays the 3D model 1 that is the target of length dimension creation on the display unit 25. The CPU 21 detects that the operator has selected the surface 1c and the surface 1d (see FIG. 2) as 3D model elements by using the operation unit 24 (mouse) (step S101). Here, as an example, when the plane 1c and the plane 1d are selected, the selection is performed by clicking near the cursor positions U and V shown in FIGS. 7B and 7C.

  Next, the CPU 21 detects that the operator has designated the attribute arrangement plane 2 that associates the dimension 2a as the attribute information with the operation unit 24 (step S102). The CPU 21 sets the drawing position of the dimension 2a from the click position when the operator selects the surface 1c and the surface 1d of the 3D model element in step S101 and the attribute arrangement plane 2 designated by the operator in step S102 (step S102). S103).

  That is, here, when the surface 1c and the surface 1d are selected, it is detected that the click is performed in the vicinity of the cursor positions U and V shown in FIG. 7B and FIG. The drawing positions of 1k and 1e are the vertices closest to the click positions U and V, and the dimension 2a is displayed as shown in FIG. Here, if a click is made at a position close to another vertex during surface selection, the dimension 2a is naturally extracted from the closest point.

  Next, the CPU 21 sets the temporary placement position of the dimension 2a as the attribute information on the attribute placement plane 2 for the 3D model based on the preset temporary placement setting of the attribute information (step S104). Here, the position clicked by the operator on the attribute arrangement plane 2 is set to be the temporary arrangement position.

  Next, the CPU 21 displays, on the display unit 25, the dimension 2a input at the drawing position and the temporary arrangement position of the dimension 2a as the set attribute information (step S105). Here, when the operator looks at the dimension 2a displayed on the display unit 25, the temporary arrangement position of the dimension 2a on the attribute arrangement plane 2 becomes a position where the dimension 2a is easy to see due to the positional relationship with other dimensions and the like. Can be modified as follows. Of course, if there is no need for correction, the process proceeds to step S106. Then, the CPU 21 finally determines the drawing position and arrangement position of the dimension 2a as the attribute information, and associates the dimension 2a with the attribute arrangement plane 2 (step S106).

  By executing the above processing in the information processing apparatus, the operator can control the extraction position of the attribute information by the click position when selecting the surface of the 3D model. Thereby, as shown in FIG. 5B, FIG. 8B, and FIG. 9B, it is possible to avoid a state in which the leader lines 105 and 106 are long and cross the 3D model. Easy-to-view attribute information as shown in FIGS. 8A and 9A can be input.

  Next, in the case where the attribute arrangement plane set in the 3D model has a target area shown as a detailed drawing with a part of the 3D model being displayed, the attribute arrangement plane 5 and the dimension 5a “23 ± 0” in FIG. .1 "is taken as an example and will be described with reference to FIG. 6 and FIGS.

  FIG. 10A is a diagram showing a drawing position and a cursor position S when attribute information is associated with an attribute arrangement plane having a target area, and FIG. 10B is a diagram showing a cursor position T. FIG. 11A is a diagram illustrating a display state of dimensions in the target region, and FIG. 11B is a diagram illustrating a display state of dimensions in the attribute arrangement plane and the target region. FIG. 12A is a diagram illustrating a display state of dimensions in the target area, and FIG. 12B is a diagram illustrating a display state of dimensions in the attribute arrangement plane and the target area.

  In FIG. 6, as in the case of the dimension 2a, the CPU 21 of the information processing apparatus displays the attribute information creation menu on the display unit 25, and when the operator selects length dimension creation from the attribute information creation menu, The height dimension creation command is launched, and the 3D model 1 for the length dimension creation target is displayed on the display unit 25. The CPU 21 detects that the operator has selected the cylindrical surface 1y and the plane 1z (see FIG. 10) as 3D model elements by using the operation unit 24 (mouse) (step S101). Here, when selecting the cylindrical surface 1y and the plane 1z, it is selected by clicking near the cursor positions S and T shown in FIGS. 10 (a) and 10 (b).

  Next, the CPU 21 detects that the operator has designated the attribute arrangement plane 5 that associates the dimension 5a as the attribute information with the operation unit 24 (step S102). The CPU 21 sets the drawing position of the dimension 5a from the click position when the operator selects the cylindrical surface 1y and the plane 1z of the 3D model element in step S101 and the attribute arrangement plane 5 specified by the operator in step S102 ( Step S103).

  That is, here, when the cylindrical surface 1y and the plane 1z are selected, clicking is performed in the vicinity of the cursor positions S and T shown in FIGS. 10A and 10B, and the attribute arrangement plane 5 is the target region. 51, the drawing position of the dimension 5a is 1t which is the center point 1x on the bottom surface 1w close to the click position S and the vertex closest to the click position T in the target area 51, and the dimension 5a is shown in FIG. 11 (a) and FIG. 11 (b) are displayed.

  Here, if the drawing position on the plane 1z side of the dimension 5a is simply the closest point of the click position, it is the position of the vertex 1u outside the target area 51 as shown in FIG. However, when only the target area 51 is displayed as shown in FIG. 12 (a), it can be understood that the dimension 5a is added to the center of the cylindrical surface 1y on the cylindrical surface 1y side. Does not know where this dimension 5a is added.

  Further, when selecting a surface, when the surface is selected in the display state as shown in FIGS. 10A and 10B, the operator tries to set the drawing position on the plane 1z side to the vertex 1t. Even if it exists, since the vertex 1u is not visible, it is possible to click at the cursor position T in FIG. 10B.

  Therefore, in the present embodiment, when the attribute arrangement plane 5 has the target area 51, the drawing position of the associated dimension exists in the target area 51 among the vertices on the selected plane, and the plane selection The process that becomes the closest vertex from the click position of is performed. For this reason, as shown in FIGS. 11A and 11B, the drawing position on the plane 1z side of the dimension 5a is the vertex 1t.

  Next, the CPU 21 sets the temporary placement position of the dimension 5a as the attribute information on the attribute placement plane 5 for the 3D model based on the preset temporary placement setting of the attribute information (step S104). Since the setting of the position of the temporary arrangement of the dimension 5a is the same as that of the dimension 2a, the description thereof is omitted.

  Next, the CPU 21 displays on the display unit 25 the dimension 5a input at the drawing position and the provisional arrangement position of the dimension 5a as the set attribute information (step S105). Here, the operator looks at the dimension 5a displayed on the display unit 25, and the temporary arrangement position of the dimension 5a on the attribute arrangement plane 5 becomes a position where the dimension 5a is easy to see due to the positional relationship with other dimensions and the like. Can be modified as follows. Then, the CPU 21 determines the extraction position and the arrangement position of the dimension 5a as the attribute information, and associates the dimension 5a with the attribute arrangement plane 5 (step S106).

  By executing the above processing in this information processing apparatus, the operator can control the placement position of the attribute information by the click position at the time of selecting the surface of the 3D model, and the attribute placement plane to be associated with the attribute information can be reliably correlated. It can be set within the target area. Thereby, it is possible to avoid inputting difficult-to-understand attribute information as shown in FIGS. 5B, 8B, 9B, 12A, and 12B. It is possible to input attribute information that is easier to see and understand.

  Here, for example, as shown in FIG. 13 (a), when there is no vertex of the surface 101a to which the dimension is to be input in the target area 71 of the attribute arrangement plane 7 to which the dimension is to be related, as shown in FIG. 13 (b). As described above, the vertex 101b is created at the click position or the position closest to the click position in the target area 71, and the dimensions are drawn from the vertex 101b.

  In the above example, there is an attribute arrangement plane 2 that is set in the same direction as the attribute arrangement plane 5 having the target area and covers the entire 3D model, and the attribute arrangement plane 5 is a detailed view in a two-dimensional drawing. An example of such a role is shown.

  On the other hand, an attribute arrangement plane that has the same direction as the attribute arrangement plane having the target area and is not set as a whole is set, and the attribute arrangement plane having the target area plays a role corresponding to a partial diagram in a two-dimensional drawing. Even in such a case, the present invention can be suitably applied.

  As described above, according to the present embodiment, the operator can control the extraction position of the attribute information by the selection position when selecting the element of the 3D model to which the attribute information is added. As a result, it is possible to reduce the load on the operator, the man-hours involved in creating parts and products, and the creation period of parts and products. Further, when the target area is set on the attribute arrangement plane to which the attribute information is associated, the attribute information can be surely extracted from the target area, thereby increasing the load on the operator (for example, product designer). And easy-to-read attribute information can be created.

[Second Embodiment]
The second embodiment is different from the first embodiment described above in the following points. Since the other elements of the present embodiment are the same as the corresponding ones of the first embodiment (FIG. 1) described above, description thereof is omitted.

  In the first embodiment described above, the case where the length dimension of the surface of the 3D model is created in association with the attribute arrangement plane has been described.

  In contrast, in the present embodiment, a case will be described in which the diameter dimension of the cylindrical surface of the 3D model is created in association with the attribute arrangement plane parallel to the central axis of the cylindrical surface.

  FIG. 14A is a diagram showing a state where an attribute arrangement plane to be associated is selected, FIG. 14B is a diagram showing a state where a diameter dimension is drawn, and FIG. 14C is a diagram showing an attribute arrangement plane to be associated. The figure which shows the state to select, FIG.14 (d) is a figure which shows the state from which a diameter dimension is pulled out.

  FIG. 14 shows a state where the diameter dimension 12a (dimension “φ20 ± 0.1”) of the cylindrical surface 11a of the 3D model 11 is created. Similar to the processing of FIG. 6 of the first embodiment described above, the cylindrical surface 11a is selected by clicking at the cursor position W shown in FIG. 14A, and the associated attribute arrangement plane 12 is selected. Thereby, the dimension 12a is pulled out from the position (11b, 11c) shown in FIG. In addition, the cylindrical surface 11a is selected by clicking at the cursor position W 'shown in FIG. 14C, and the attribute placement plane 12 to be associated is selected. Thereby, the dimension 12a is pulled out from the position (11d, 11e) shown in FIG.

  As described above, when the diameter dimension of the cylindrical surface is created in association with the attribute arrangement plane parallel to the central axis of the cylindrical surface, it is the same as the case where the length dimension is created in association with the attribute arrangement plane. In addition, the drawing position of the diameter dimension can be controlled by the click position at the time of selecting the surface, and the diameter dimension can be easily input.

  The same applies to the case where the diameter dimension of the cylindrical surface is created in association with the attribute arrangement plane that is parallel to the central axis of the cylindrical surface and has the target area.

  15A is a diagram showing the cursor position X in the target area set on the attribute arrangement plane, FIG. 15B is a diagram showing the cursor position X ′, and FIG. FIG. 15D is a diagram showing a placement plane, and FIG. 15D is a diagram showing a lead line having a radial dimension.

  In FIG. 15, FIG. 15C shows the attribute arrangement plane 6 that associates the 3D model 11 with the diameter dimension 6 a input to the cylindrical surface 11 y. FIG. 15A, FIG. 15B, and FIG. 15D show a state in which the object area 61 set on the attribute arrangement plane 6 is displayed in an easily understandable manner.

  When the click position for selecting the cylindrical surface 11y is the cursor position X in FIG. 15A and the attribute arrangement plane 6 to which the diameter dimension 6a is associated is selected, the drawing position of the diameter dimension 6a is as shown in FIG. 15D. 11b and 11c. When the cursor is clicked at the position X ′ of FIG. 15B, the drawing positions closest to the click position are 11d and 11e on the lower surface 11z of the cylinder, but 11d and 11e are outside the target area 61. Therefore, similarly to the case of clicking at the cursor position X in FIG. 15A, the drawing positions of the diameter 6a are 11b and 11c shown in FIG. 15D.

  As described above, the operator can control the drawing position of the radial dimension by the click position with respect to the 3D model, and can reliably set the drawing position of the radial dimension within the region, so that the diameter dimension is input more easily and clearly. be able to.

  Further, when inputting the dimension 8a that is drawn from the outer peripheral portion of the cylindrical surface as shown in FIG. 16, it is possible to input a dimension that is easy to understand as described above.

  Also in the present embodiment, as in the first embodiment described above, the operator can control the extraction position of the attribute information, and can create easy-to-read attribute information.

[Third Embodiment]
The third embodiment is different from the first embodiment described above in the following points. Since the other elements of the present embodiment are the same as the corresponding ones of the first embodiment (FIG. 1) described above, description thereof is omitted.

  In the first embodiment described above, the case has been described in which the attribute arrangement plane is set at a position separated from the 3D model 1 by a predetermined distance.

  On the other hand, in the present embodiment, the attribute arrangement plane 9 is set as shown in FIGS. 17 (a) and 17 (b). That is, the present invention can be similarly applied to the attribute arrangement plane 9 which is located in a state of crossing the 3D model 1 and displays the cross-sectional shape of the 3D model 1 and has the target area 91.

  Also in the present embodiment, as in the first embodiment described above, the operator can control the extraction position of the attribute information, and can create easy-to-read attribute information.

[Fourth Embodiment]
The fourth embodiment is different from the above-described first embodiment in the following points. Since the other elements of the present embodiment are the same as the corresponding ones of the first embodiment (FIG. 1) described above, description thereof is omitted.

  In the first embodiment described above, when a surface on which attribute information is input is clicked in step S101 of FIG. 6 and an attribute arrangement plane to which attribute information is associated is selected in step S102, all vertices or attribute arrangements of the clicked surface are selected. In the case where the target area is set on the plane, the case has been described in which the vertex closest to the click position is set as the extraction position of the attribute information for all the vertices in the target area.

  On the other hand, in this embodiment, out of all the vertices of the clicked surface or all the vertices in the target area of the attribute arrangement plane, the vertices that can be the extraction position are extracted in advance, and the extracted For the selected vertex, the closest point from the click position of the surface selection is determined and used as the attribute information extraction position.

  For example, when the surface 1c, the surface 1d, and the attribute arrangement plane 2 are selected in order to create the dimension 2a in the 3D model 1 shown in FIGS. 2 and 5, the following points are extracted. That is, vertices 1e and 1i, vertices 1f and 1h, vertices 1j and 1g, vertices 1k and 1m, vertices 1l and 1n, vertices 1p and 1q, and vertices 1r and 1s are the same points when projected onto attribute placement plane 2 Among these combinations, the vertex 1e, the vertex 1f, the vertex 1j, the vertex 1k, the vertex 1l, the vertex 1p, and the vertex 1r located on the attribute arrangement plane 2 side are extracted.

  By determining the extraction position of the attribute information by the extraction as described above, the processing shown in the flowchart of FIG. 6 is executed without reducing the operator's work efficiency even on a complicated shape surface having a large number of vertices. can do.

  Also in the present embodiment, as in the first embodiment described above, the operator can control the extraction position of the attribute information, and can create easy-to-read attribute information.

[Fifth Embodiment]
The fifth embodiment is different from the first embodiment described above in the following points. Since the other elements of the present embodiment are the same as the corresponding ones of the first embodiment (FIG. 1) described above, description thereof is omitted.

  In the present embodiment, a case of setting a drawing position when attribute information that has already been created and is not associated with an attribute arrangement plane is associated with the attribute arrangement plane will be described with reference to FIG.

  FIG. 18 is a flowchart illustrating processing for setting a drawing position when attribute information that is not associated with an attribute arrangement plane is associated with an attribute arrangement plane in the information processing apparatus.

  In FIG. 18, the operator creates attribute information on the information processing apparatus, and sets the attribute information in a free state that is not associated with any attribute arrangement plane (step S201). At this time, the extraction position of the attribute information is a vertex closest to the click position when the 3D model element is selected among the vertices of the 3D model element to which the attribute information is input. Next, the CPU 21 detects that the operator has designated the attribute arrangement plane to be associated with the 3D model element displayed on the display unit 25 using the operation unit 24 (step S202).

  Next, when the target area is set on the attribute arrangement plane designated by the operator in step S202, the CPU 21 determines whether or not the extraction position in step S201 is within the target area. If the extraction position in step S201 is within the target area, the extraction position is set unchanged. If the extraction position in step S201 is outside the target area, the extraction position is set at the vertex in the target area closest to the extraction position. If the target area is not set on the attribute arrangement plane specified in step S202, the extraction position is set unchanged (step S203).

  The processing from step S204 to step S206 is the same as the processing from step S104 to step S106 in FIG. 6, and sets the arrangement of easy-to-read attribute information.

  On the other hand, when attribute information that is already associated with the attribute arrangement plane is associated with another attribute arrangement plane, similarly, the attribute information is moved in the 3D space in the normal direction of the attribute arrangement plane to be associated from the current position. Temporarily arrange on the attribute arrangement plane. Thereby, it is possible to set an easy-to-view attribute information arrangement as described above.

  Also in the present embodiment, as in the first embodiment described above, the operator can control the extraction position of the attribute information, and can create easy-to-read attribute information.

[Other embodiments]
In the above embodiment, the CAD program is stored in the external storage device 26. However, the present invention is not limited to this, and any configuration can be used. For example, the CAD program may be stored in the ROM 22 or the CAD program stored in the external device may be downloaded to the information processing apparatus.

  In addition, an object of the present invention is to supply a storage medium storing software program codes for realizing the functions of the embodiments to a system or apparatus, and a computer (or CPU, MPU, etc.) of the system or apparatus as a storage medium. This can also be achieved by reading and executing the stored program code.

  In this case, the program code itself read from the storage medium realizes the functions of the above-described embodiments, and the program code and the storage medium storing the program code constitute the present invention.

  Examples of the storage medium for supplying the program code include a floppy (registered trademark) disk, a hard disk, a magneto-optical disk, a CD-ROM, a CD-R, a CD-RW, a DVD-ROM, a DVD-RAM, and a DVD. -RW, DVD + RW, magnetic tape, nonvolatile memory card, ROM, etc. can be used. Alternatively, the program code may be downloaded via a network.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an OS (operating system) running on the computer based on the instruction of the program code. A case where part or all of the actual processing is performed and the functions of the above-described embodiments are realized by the processing is also included.

  Further, after the program code read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. This includes the case where the CPU or the like provided in the board or function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

  Further, by executing the program code read out by the computer, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code is actually Needless to say, the present invention also includes a case in which the functions of the above-described embodiments are realized by performing part or all of the processing and the processing.

  In this case, the program is supplied by downloading directly from a storage medium storing the program or from another computer or database (not shown) connected to the Internet, a commercial network, a local area network, or the like.

  The form of the program may be in the form of object code, program code executed by an interpreter, script data supplied to an OS (operating system), and the like.

It is a block diagram which shows the structure of the information processing apparatus which concerns on the 1st Embodiment of this invention. (A) is a figure which shows the example of a 3D model, (b) is a figure which shows the figure which shows the example which looked at the 3D model from another direction. It is a figure which shows the state which set the attribute arrangement | positioning plane to 3D model. It is a figure which shows the 3D model and attribute information seen from the normal line direction of the attribute arrangement plane. (A) is a figure which shows the lead line of a length dimension, (b) is a figure which shows the case where the lead line of a length dimension is longer than necessary. It is a flowchart which shows the process regarding the input of the attribute information in information processing apparatus. (A) is a figure which shows the drawing-out position of a leader line, (b) is a figure which shows the position U of a cursor, (c) It is a figure which shows the position V of a cursor. (A) is a figure which shows the lead line of a length dimension, (b) is a figure which shows the case where the lead line of a length dimension is longer than necessary. (A) is a figure which shows the lead line of a length dimension, (b) is a figure which shows the case where the lead line of a length dimension is longer than necessary. (A) is a figure which shows the drawer position and the position S of a cursor when attribute information is linked | related with the attribute arrangement | positioning plane which has an object area | region, (b) is a figure which shows the position T of a cursor. (A) is a figure which shows the display state of the dimension in an object area | region, (b) is a figure which shows the attribute display plane and the display state of the dimension in an object area | region. (A) is a figure which shows the display state of the dimension in an object area | region, (b) is a figure which shows the attribute display plane and the display state of the dimension in an object area | region. (A) is a figure which shows the extraction position when there is no vertex in a target area, (b) is a figure which shows the state by which the vertex was created in the target area. It is a figure which shows the example of diameter dimension preparation of the cylindrical surface which concerns on the 2nd Embodiment of this invention, (a) is a figure which shows the state which selects the attribute arrangement | positioning plane to relate, (b) is a diameter dimension drawn out The figure which shows a state, (c) is a figure which shows the state which selects the attribute arrangement | positioning plane to link, (d) is a figure which shows the state from which a diameter dimension is pulled out. (A) is a diagram showing the cursor position X in the target area set in the attribute arrangement plane, (b) is a diagram showing the cursor position X ′, (c) is a diagram showing the attribute arrangement plane, (d) FIG. 4 is a diagram showing a lead wire having a diameter. It is a figure which shows an example of the dimension which has a drawer position in the external part of a cylindrical surface. It is a figure which shows the attribute arrangement | positioning plane which concerns on the 3rd Embodiment of this invention, (a) is a figure which shows an example of the attribute arrangement | positioning plane which displays cross-sectional shape and has an object area | region, (b) is an attribute arrangement | positioning plane It is a figure which shows an example. It is a flowchart which shows the process which sets the extraction | drawer position in the case of associating the attribute information which is not linked | related with the attribute arrangement plane in the information processing apparatus which concerns on the 5th Embodiment of this invention with an attribute arrangement plane.

Explanation of symbols

1, 11 3D model (3D model)
2, 3, 4, 5, 6, 7, 12 Attribute placement plane (virtual plane)
2a-2c, 3a-3c, 4a-4c, 5a, 6a, 8a, 12a Dimensions (attribute information)
21 CPU (detection means, control means)
23 RAM
24 operation unit 25 display unit 26 external storage device 51, 61, 71 target area U, V, W, W ' , X, X' click position

Claims (8)

An information processing apparatus for displaying attribute information of a three-dimensional model,
Detecting means for detecting a position where an element of the three-dimensional model is selected;
Depending on the display area of the detection position and the element to set the point on the element in extended position of the attribute information to be displayed on the display means the lead wire from said extended position to said attribute information control Means,
An information processing apparatus comprising: The control means, when a part of the element is present in the display area , sets the point that is present in the part and is closest to the detected position as the extraction position of the attribute information. The information processing apparatus according to claim 1.   The information processing apparatus according to claim 2, wherein the closest point is a vertex in a part of the elements.   The control means sets a point closest to the detected position as the extraction position of the attribute information when a part of the element is set as the display area and the vertex does not exist in the display area. The information processing apparatus according to claim 3.   The information processing apparatus according to claim 3, wherein the vertex is a point that is the same in a virtual plane on which the attribute information is arranged. The element of the three-dimensional model is selected from a group including a plane and a cylindrical surface, and the attribute information added to the element of the three-dimensional model is selected from a group including a length dimension and a diameter dimension. the information processing apparatus according to any one of claims 1 to 3, characterized in that it. An information processing apparatus control method for displaying attribute information of a three-dimensional model,
A detecting step in which detecting means detects a position where the element of the three-dimensional model is selected;
Depending on the display area of the detection position and the element to set the point on the element in extended position of the attribute information, the control means display means leader line from said extended position to said attribute information Control steps to be displayed;
A control method comprising: Computer program characterized in that it makes function as each unit of the information processing apparatus according to any one of claims 1 to 6.

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