JP4283745B2 - 3D CG system for residential buildings and hierarchical data structure used therefor - Google Patents

Description

  The present invention relates to a three-dimensional CG system for home construction that performs three-dimensional display by virtually constructing a house in a plan on a screen by computer graphics, and a hierarchical data structure used therefor.

  As an alternative to a conventional house exhibition hall or model house, the house is visually confirmed by displaying it in a three-dimensional state with the house being planned on the screen constructed by computer graphics (hereinafter referred to as “CG”). However, a housing virtual construction method, a virtual construction system used therefor, a database realizing the system, and a recording medium storing a program have been proposed (for example, patents). Reference 1).

  This proposal is a virtual construction method for virtually constructing a house on the screen, storing at least part data for a house including at least a module of the house as a parts database and displaying the part on the screen so that the part can be selected. Then, the part data selected on the screen is called from the parts database, the part is displayed on the screen by using this data, and a plurality of the displayed parts are combined on the screen to virtually construct a house. It is characterized by this.

  According to this, by selecting a module from the part display field and combining them on the screen, the house can be virtually constructed and visually confirmed. Accordingly, the home purchaser can easily check the house plan under construction in a state where the house is being constructed, so that various plans can be easily tried while visually checking the house. Furthermore, since the structure and design of the house can be confirmed on the screen during planning, there is no need to confirm the structure and design after the plan is decided. In addition, the home supplier can easily appeal the superiority of his / her module to the home buyer or the like by actually having the module combined with the home buyer or the like.

  In addition, dedicated software may be required for such a three-dimensional display of a virtual house on a computer screen, or a computer may require a large amount of processing power. An image display device, an image display method, an image display program, and a storage medium storing the image display program using XVL (extensible virtual world description language) that can be sufficiently utilized in the Internet environment by realizing a light weight (For example, refer to Patent Document 2).

XVL is a general term for 3D data description and animation description technology based on Lattice Technology's Lattice Kernel as a 3D representation based on XML (extensible Markup Language). It is also a registered trademark of the corporation.
JP 2001-282880 A JP 2003-242524 A

  However, in many conventional CGs, the operation of the parts in the house virtually constructed on the computer screen is entrusted to the operator, so that it is possible to assign an unnatural arrangement or texture that is impossible in reality. Or annoying operations were required. For example, even if the vase placed on the table is moved from the table, if the height from the floor remains the same, the vase is floating in the air. Also, even if you want to change the sofa placed on the floor of the living room to another design, you can erase the sofa already placed from the screen first, and then change the sofa of the other design to the same However, the troublesome operation to arrange in the place was necessary.

  In view of such problems of the prior art, an object of the present invention is to plan a house while visually confirming the house by three-dimensionally displaying the house being planned on the screen by CG. 3D for home construction that enables each part in a virtually constructed house to behave naturally and appropriately, and to greatly improve the operability of CG. It is to provide a CG system and a hierarchical data structure used for it.

In order to achieve the above object, a three-dimensional CG system for residential building according to the present invention comprises storage means, display means, and input means for storing component information including at least three-dimensional shape data for each component constituting the house. A housing is virtually constructed by computer graphics based on the component information stored in the storage means, and a three-dimensional display is performed on the display means, and the component in accordance with an operation from the input means an information and the three-dimensional display content capable residential building 3D CG system changes, the component information is to have a hierarchical data structure comprising a plurality of groups are hierarchized into a plurality of layers The hierarchical data structure relates to the specifications of the house in the lower hierarchy of the individual house information group of the component information corresponding to one house. A house specification information group, a house outside information group related to the outside of the house, a house inside information group related to the inside of the house, a house roof information group related to the roof of the house, and a house basic information group related to the foundation of the house, A housing structure body information group related to the housing structure body, and the hierarchical data structure includes an entire house information group that groups the individual house information groups in a higher hierarchy of the individual house information group. The hierarchical data structure further includes a finishing material group for grouping site shapes of components having the same finishing material and the same candidate color among the components constituting the house, and parts in the components constituting the house. Component types grouped to each type, and each component belonging to each of the above groups. Each element has predetermined attribute information for each group, and the attribute information includes classification information for indicating a classification name of each constituent element and at least selecting an appropriate process for the drag-and-drop operation. And when the drag and drop operation is performed in the three-dimensional display, if the category information of the dragged component and the category information of the drop destination component are the same, the drop destination component Is replaced with the dragged component, and if the category information of the dragged component and the category information of the drop destination component are different, the drop is placed on the drop destination component A process of placing the dragged component is performed, and the attribute information further includes at least the floor height and the designated surface. It includes reference height classification information indicating which height level each component is attached to, and how to attach each component is determined based on the height level indicated by this reference height category information. Dimensional display is performed .

  Here, in order to make the component element information have a hierarchical data structure, for example, an XVL file format may be used, but it is not limited to such a file format.

According to the three-dimensional CG system for residential building of the present invention, a house is virtually constructed by CG to perform three-dimensional display, and the component information of the house used for changing according to the operation is considered for the house plan. For example, it can have a suitable hierarchical data structure. Thereby, each component in the house virtually constructed by CG behaves naturally and appropriately, and the operability of CG can be improved. In addition, the component information can be constructed so as to accurately correspond to the actual housing structure. Thereby, the operability of the CG can be remarkably improved. Moreover, the component which has the same finishing material and the same candidate color can be collectively operated in each component which comprises a house by performing operation with respect to a finishing material group. By performing an operation on the component type group, it is possible to collectively operate components of the same type among the components constituting the house. Thereby, the operability of the CG can be further improved.

Here, also other as attribute information, For example, bird's-eye view showing input Kaijo report indicating the floors each component is disposed, whether or not to display when performing bird's-eye view before Symbol display means Examples include flag information, change flag information indicating whether or not the component element information and the three-dimensional display content have been changed in accordance with an operation from the input unit, but are not limited thereto. In addition, when change flag information is included as attribute information, change content information may be output for each component indicating that the change flag information has been changed according to an operation from the input unit. .

  According to the three-dimensional CG system for residential building of this invention, since it can have appropriate attribute information according to the group to which each component belongs, each component in CG behaves more naturally and appropriately, and The operability can be further improved. Further, if the change content information can be output and the salesperson uses this 3D CG system for residential construction for the purpose of negotiation with the customer, it can be left as a negotiation record. .

  According to the three-dimensional CG system for residential buildings of the present invention and the hierarchical data structure used for the three-dimensional CG system, the house is virtually constructed by the CG and displayed in three dimensions, and the house used for changing according to the operation is displayed. The component information can have a hierarchical data structure suitable for studying a house plan. Thereby, each component in the house virtually constructed by CG behaves naturally and appropriately, and the operability of CG can be improved.

  Embodiments of the present invention will be described below with reference to the drawings. It should be noted that the description of the contents already realized by the above-described prior art and other known techniques is omitted as much as possible, and the characteristic contents of the present invention are mainly described.

<A. Schematic configuration of 3D CG system 1>
FIG. 1 is a schematic configuration diagram of a three-dimensional CG system 1 for residential construction according to an embodiment of the present invention.

  As shown in FIG. 1, a three-dimensional CG system 1 is a system having an input device 3 such as a keyboard and a mouse, and a computer device 2 connected to a display device 4 such as a projector or a plasma display as an operating environment. is there. Examples of the computer device 2 include, but are not limited to, desktop type and notebook type personal computers.

  The three-dimensional CG system 1 includes CAD software 5 for housing design, and CAD data 7 for housing design can be input and edited by the CAD software 5. Here, the CAD software 5 itself may be general-purpose CAD software using a known technique or dedicated software. The CAD data 7 is not limited to a general data format, and may be a dedicated data format. It is not always necessary to input and edit the CAD data 7 with the three-dimensional CG system 1. For example, the CAD data 7 input and edited by another system may be read via a network or a removable medium.

  As one of its functions, the CAD software 5 has a converter 5a that converts the CAD data 7 into an input intermediate file 8 having a hierarchical structure and outputs the converted intermediate file 8. Here, the data format of the input intermediate file 8 is, for example, the XVL format, but is not limited thereto. Converter software that converts CAD data in a general-purpose data format into a general intermediate file is known, but although the basic operation of the converter 5a is the same as that, the output format is different from them. In contrast, it is an intermediate file having a hierarchical structure optimized for a house CG, and is a feature of the present embodiment.

  Various implementation methods are conceivable for making the converter 5a one of the functions of the CAD software 5. For example, the converter 5a may be an internal program of the CAD software 5 (in this case, the CAD software 5 is not known), or the converter 5a may be an external program that can be started from the CAD software 5 menu. Alternatively, the converter 5a may be plug-in software for the CAD software 5, but is not limited to these mounting methods.

  The three-dimensional CG system 1 further includes a CG application 6. The CG application 6 reads the input intermediate file 8 output from the converter 5a, displays the house three-dimensionally on the display device 4, and changes the input intermediate file 8 according to the operation from the input device 3. Can be reflected in the three-dimensional display contents of the house. The CG application 6 stores changes made to the input intermediate file 8 in accordance with operations from the input device 3, and the stored changes are stored in the same hierarchy as the input intermediate file 8. An output intermediate file 9 having a structure can be output. Alternatively, the stored change contents may be output as change information in another predetermined format.

  Further, the CAD software 5 can read the output intermediate file 9 and change the corresponding part of the CAD data 7 based on the contents. By doing in this way, the CAD data 7 which corresponds to the three-dimensional display content of the house after various changes are added according to operation from the input device 3 can be obtained.

<B. Intermediate file for input 8>
<< B1 >> Outline of Input Intermediate File 8 FIG. 2 is a hierarchical structure of an input intermediate file 8 output by conversion from CAD data 7 in the three-dimensional CG system 1 for residential buildings according to an embodiment of the present invention. FIG.

  As shown in FIG. 2, a material 81, a texture 82, a camera 83, a light source 84, and a house route group 85 are output at the highest level of the input intermediate file 8. A house group 850 is output to a lower hierarchy of the house root group 85. Further, a specification group 851, an external group 852, an internal group 853, a roof group 854, a foundation group 855, and a structural frame group 856 are output to the lower hierarchy of the house group 850.

  Here, the specification group 851 is a group in which information on the major classification “specification” is described. The external group 852 is a group in which information of a large classification “outer shape, outdoor” is described. The internal group 853 is a group in which information on the large classification “indoor” is described. The roof group 854 is a group in which information on the major classification “roof” is described. The basic group 855 is a group in which information on the large classification “basic” is described. The structural enclosure group 856 is a group in which information on the major classification “structure” is described.

  Each group has basic attributes and general user attributes that can be defined by the user. Examples of the basic attribute include a group ID. General user attributes include attributes common to each group and individual attributes for each group.

<< B2 >> Common General User Attributes FIG. 3 shows common user attributes (hereinafter referred to as “common attributes”) among the general user attributes added to all the groups described in the input intermediate file 8.

  As shown in FIG. 3, there are three common attributes: “display name”, “display ON / OFF”, and “group type”. The attribute “display name” is a name displayed by the CG application 6. The attribute “display ON / OFF” is a flag for setting ON / OFF of display in the CG application 6, and 1 corresponds to display ON, and 0 corresponds to display OFF. The attribute “group type” is a type of group recognized by the CG application 6, and is recognized as a normal group when there is no definition, and is recognized as a product when “Product”.

<< B3 >> Common Group Next, the common group of the input intermediate file 8 will be described. In addition, in order to distinguish and explain when there are a plurality of groups for each common group, a lowercase letter is added to the end of the reference symbol as necessary.

≪B3.1≫ Finishing material group 801
FIG. 4 shows the general user attributes of the finishing material group 801 that collects the same finishing material and the part shapes of the same candidate color among the common group of the input intermediate file 8. FIG. 5 shows the structure of this finishing material group 801.

  As shown in FIG. 4, the finishing material group 801 has “member ID”, “candidate color number”, “material name”, and “color number” as individual general user attributes in addition to the common attributes. All of these attributes are essential.

  In the finishing material group 801 and below, a body having a part shape of the finishing material and a part shape are described. For example, as shown in FIG. 5, a Product (member n) 803n is described below the finishing material n (801n), and a shell 807 is described below.

<< B3.2 >> Parts type group 802
FIG. 6 shows a structure of a component type group 802 for grouping output components for each type in the common group of the input intermediate file 8. The component type group 802 has only common attributes and does not have individual general user attributes.

  Only parts of the same type are described in the parts type group 802 and below, thereby facilitating recognition of the same type of parts. For example, as shown in FIG. 6, a Product (member n) 803n is described under a component type n (802n), a Shape (graphic n) 806n is described below, and a shell n (807n) is further below that. Is described.

  Further, in order to show the hierarchical structure of the members, a product (child member m) 8031m may be described under the product (member n) 803n, or a product (grandchild member l) 80321 may be further described below. Good. Similar to Product (member n) 803n, Shape (graphic m) 806m is described below Product (child member m) 8031m, and shell m (807m) is described below. Below the Product (grandchild member l) 8032l, a Shape (figure l) 806l is described, and below that a shell l (807l) is described.

≪B3.3≫ Product Group 803
FIG. 7 shows general user attributes of a Product (member) group 803 in which attributes and shapes of members input to the CAD data 7 among the common groups of the input intermediate file 8 are described.

  The main body member is created under the finishing material group 801 described above. The arrangement member is created under the above-described component type group 802. The parent member, the child member, and the grandchild member are output in the hierarchical structure in the CAD data 7. Basically, a member that does not have a figure is not output to the input intermediate file 8, but if there is a figure below the child member even if it does not have a figure, it does not have a figure and the general user attribute Is output as a group with only

  The Product (member) group 803 sets “Product” as the “group type” of the common attribute. In addition to common attributes, as individual general user attributes, as shown in FIG. 7, “placement / main body flag”, “substance flag”, “substance / link group ID”, various CAD information, “change flag” And “change information”.

  Here, the attribute “arrangement / main body flag” indicates whether the arrangement is (0) or main body (1).

  The attribute “entity flag” indicates whether the entity is an entity (0) or a link (1). The layout related to multiple main bodies such as external joinery and internal joinery is structured so that it can be referred to from all the main bodies, so there is only one part entity and other parts have links to that entity. It is assumed that it has parts. In addition, in these correspondence relationships, a group ID of a link or entity corresponding to the attribute “entity / link group ID” is set.

  The attribute “classification” enables the CG application 6 to automatically execute an appropriate process by distinguishing the types of parts. For example, it is possible to select an appropriate process for drag and drop. That is, if the value of the attribute “classification” is the same, the replacement process is performed, and if the attribute “classification” is different, the placement process is performed. For example, if you drag and drop a dish ("Classification" = "Tableware") onto the table, the dish is placed on the table, but the same operation can be performed on other dining tables ("Classification" = "Table"). Doing so replaces the table. In addition, with the table selected, it is also possible to adopt a mechanism for the menu to initially display the table relation.

  The attribute “input floor” makes it possible to recognize on which floor the part is placed. This is because the material and texture can be changed at any level, but the “floor” cannot be recognized in the hierarchical structure. By providing the attribute “input floor” for each part, the CG application 6 can control the floor unit. For example, it becomes possible to change the material of all the doors arranged on the first floor at the same time.

  In the attribute “arrangement code”, a constraint condition for the arrangement of the component is set. For example, with an inner wall, with an instrument, with a room center, and optional. When set arbitrarily, it means that the part can be placed anywhere.

  The attribute “height code” sets which height level the member is attached to. For example, floor height, GL height, lower reference height, ceiling height, and the like can be given. When the floor height is set, it means that the floor surface of each room is used as a reference.

  The attribute “rounding code” defines whether the member is arranged in accordance with a module or the like. If it is defined as no rounding, it can be placed regardless of the building module. For example, a sash or the like is attached on the basis of a building module because of the framework, but in this case, it is usually input by rounding such as N / 2.

  The attribute “attachment height” defines which height the member is attached to based on the “height code”. For example, the switches and the like are defined such that “placement code” = “with inner wall”, “height code” = “floor height”, and “mounting height” = 1500. For example, in the case of a table that is in contact with the floor, “mounting height” = 0.

  The attribute “display when bird's-eye view is OFF” controls display when the CG application 6 performs bird's-eye view expression. This is because if there is a ceiling or a member attached to the ceiling such as a lighting fixture, it is difficult to see as a bird's-eye view, and it is possible to turn off the display of such a member when performing bird's-eye view representation. is there.

  The attribute “operation lock” is a group of flags that defines what operation by the CG application 6 is allowed for the member. From left to right, “Move / Rotate”, “Replace”, “Delete”, “Copy”, “Display control settings”, “Texture change”, “Material change”, “X direction deformation”, “Y direction deformation”, “Z Corresponding to “direction change”, “collision detection control”, and “shadow calculation control”, 1 in each bit indicates permission and 0 indicates disapproval.

  The attribute “showing place flag” defines whether or not to show the member when the viewpoint (camera) is called in the CG application 6. At the time of initial call of the camera, the closest member among the members for which the “showing place flag” is defined in the room can be set as the gazing point. As a result, it is possible to automatically initially display a point to be explained simply by selecting a camera.

  In the attribute “CG comment”, a comment content for displaying a telop when the part becomes active during the operation of the CG application 6 is set. The content of this comment may be provided by the manufacturer of the part, so that the intention of the producer can be directly communicated to the customer. Further, in the attribute “CGURL”, link information that can be jumped from the CG application 6 is defined. Here, by designating the URL of the manufacturer's homepage or the like, it is possible to carry out product variations and detailed explanations that cannot be conveyed only by the above comment contents.

  The attribute “change flag” indicates whether the part has been changed (1) or not (0) during the operation of the CG application 6. In the attribute “change information”, specific change contents during operation of the CG application 6 are stored. This information may be output as a change list, for example, at the end of the operation of the CG application 6. When the sales representative uses the CG application 6 for the purpose of negotiation with the customer, it can be recorded as a record. Further, as described with reference to FIG. 1, the attribute “change information” of all members and the like can be collectively output as the output intermediate file 9 and reflected in the CAD data 7.

<< B3.4 >> Shape Group 806
The figure shapes grouped in the shape of the product (member) are described in a shape (graphic) group 806. This Shape (graphic) group 806 has only common attributes and no individual general user attributes.

≪B3.5≫ Shell Group 807
FIG. 8 shows general user attributes of a shell group 807 that is a unit for describing a shape among the common groups of the input intermediate file 8.

  This shell group 807 has “material name”, “color number”, and “component material code” as individual general user attributes in addition to common attributes, as shown in FIG. All of these attributes are essential.

<< B4 >> Details of the Hierarchical Structure of the Input Intermediate File 8 Next, of the groups of the input intermediate files 8, the features that are characteristic of this embodiment will be described.

≪B4.1≫ House Route Group 85
The house route group 85 is a group for collecting a plurality of house shapes described in the input intermediate file 8. This house route group 85 has only common attributes and does not have individual general user attributes.

≪B4.2≫ House Group 850
House group 850 is a group in which the shape of one house is described. As shown in FIG. 9, this house group 850 includes “output version”, “building minimum / maximum”, “project name”, “plan name”, and “house information” as individual general user attributes in addition to common attributes. "have.

≪B4.3≫ Specification group 851
The specification group 851 is a group in which house specification information is described. This specification group 851 includes, as common user attributes in addition to common attributes, as shown in FIG. 10, the GL heights of the first floor and the first basement floor, the lower reference heights of the first to fourth floors and the first basement floor The upper reference height of each of the first to fourth floors and the first basement floor, the roof reference height of each of the first to fourth floors and the first basement floor, the reference floor height of each of the first to fourth floors and the first basement floor, “product code” ”,“ Module length ”, and“ color table information ”. All of these attributes are essential. In addition, the number of floors is not limited to the first to fourth floors in this way, and may be increased or decreased as necessary. In that case, the general user attribute of this specification group 851 is also added / deleted accordingly.

≪B4.4≫ External group 852
The external group 852 is a group in which various attributes of the external shape of the house and members constituting the outside are described. This external group 852 has only common attributes and does not have individual general user attributes. The structure of this external group 852 is shown in FIG.

  Examples of the external output target member include the following. In other words, the main body system is the outer shape, sleeve wall, alcove, parapet, bay window, etc., and the layout system is the outdoor accessory, external joiner door, external joiner window, external accessory (shutter, face lattice, window railing, inner door), etc. It is.

  As shown in FIG. 11, as for the part shape of the main body, a part shape that is not synthesized is output for each finishing material group 801. The arrangement is classified for each part type 802 (external joiner door, external joiner window, external accessory, outdoor accessory), and the CG application 6 enables operation for each part type 802. Below the component type 802, the structure is described for each component. If the intermediate file format graphic is not defined in the layout, the graphic in the CAD data 7 is converted and output. If the intermediate file format graphic is defined in the layout, the graphic is output. Is output.

  The arrangement at the boundary between the outside and the room, such as an external joinery door and an external joinery window, has a structure having an actual part outside and a link part in the room. At this time, in the general user attribute of the entity part, “entity flag” is set to 0, and the group ID of the link part is defined in “entity / link group ID”. On the other hand, in the general user attribute of the link component, “entity flag” is set to 1, and the group ID of the entity component is defined in “entity / link group ID”.

  Parts of the main body, such as sleeve walls, alcoves, parapets, etc. that have no finishing material attribute defined are output as parts of the outer wall.

≪B4.5≫ Internal Group 853
The internal group 853 is a group in which the internal shape of the house is described. This internal group 853 has only common attributes and does not have individual general user attributes. Under this internal group 853, there are a room group 808, a product group 805, a product group 804, a product group 803, a bird's eye lid group 809, a lid shape group 8090, and the like. The structure of this internal group 853 is shown in FIG.

  The following are mentioned as an internal output object member. That is, the main body system is a room, storage, partition wall, up / down floor, sloped ceiling, etc., and the arrangement system is internal fittings, fixtures, tatami mats, between floors, stairs, furniture, system kitchen, electrical equipment, etc. .

  As shown in FIG. 12, the shape of the interior is output in units of spaces (rooms) treated as one such as a room or a composite room (a room connected by a wall opening). The room group 808 describes the room and its shape, the members (main body, arrangement) included in the room, and its shape. As the part shape, an unsynthesized part shape is output for each finishing material group 801. Here, the room group 808 has only common attributes and does not have individual general user attributes. The Product (room) group 805 is a group in which the shape of the room / housing is described. The Product (part) group 804 and the Product (member) group 803 are groups in which the parts (arrangement) and member (main body) shapes belonging to the chamber are described.

  The arrangement shape is described as a part under the existing space (chamber). The output of the part shape is the same as in the case of the external group 852 described above.

  The interior joinery has a structure having a substantial part in one chamber and a link part in the other chamber. At this time, in the general user attribute of the entity part, “entity flag” is set to 0, and the group ID of the link part is defined in “entity / link group ID”. On the other hand, in the general user attribute of the link component, “entity flag” is set to 1, and the group ID of the entity component is defined in “entity / link group ID”.

  Parts of the main body, such as indoor walls and special floors, for which the finishing material attribute is not defined are output as the part of the room to which they belong.

  Further, in order to avoid seeing through the wall when the bird's-eye view is expressed by the CG application 6, a lid shape group 8090 composed of a lid shape between the walls is created on each floor, and below the bird's-eye lid group 809. Is output. Here, the bird's-eye cover group 809 has only common attributes and does not have individual general user attributes. In addition to the common attribute, the lid shape group 8090 has “floor” and “lid height” as individual general user attributes as shown in FIG.

≪B4.6≫ Roof group 854
The roof group 854 is a group in which the roof shape of the house is described. This roof group 854 has only common attributes and does not have individual general user attributes. The structure of this roof group 854 is shown in FIG.

  The following are mentioned as an output object member of a roof. That is, the main body system is a roof, an eaves cut, a berth, and the like is a roof accessory.

  As shown in FIG. 14, for the roof part shape, a part shape that is not synthesized is output for each finishing material group 801. The arrangement is classified for each part type 802 (roof accessory), and the CG application 6 enables an operation for each part type 802. Below the component type 802, a structure is described for each component 804. The output of the part shape is the same as in the case of the external group 852 described above.

  The top light with a roof has a structure having a solid part on the roof and a link part in a room where the top light exists. At this time, in the general user attribute of the entity part, “entity flag” is set to 0, and the group ID of the link part is defined in “entity / link group ID”. On the other hand, in the general user attribute of the link component, “entity flag” is set to 1, and the group ID of the entity component is defined in “entity / link group ID”.

≪B4.7≫ Basic Group 855
The basic group 855 is a group in which the basic shape of the house is described. This basic group 855 has only common attributes and no individual general user attributes. The structure of this basic group 855 is shown in FIG.

  Examples of the basic output target member include the following. That is, the main body system is a foundation, and the arrangement system is a foundation incidental.

  As shown in FIG. 15, with respect to the base part shape, a part shape that is not synthesized is output for each finishing material group 801. The arrangement is classified for each part type 802 (roof accessory), and the CG application 6 enables an operation for each part type 802. Below the component type 802, a structure is described for each component 804. The output of the part shape is the same as in the case of the external group 852 described above.

≪B4.8≫ Structural enclosure group 856
The structural frame group 856 is a group in which the structural frame shape of the house is described. This structural enclosure group 856 has only common attributes and no individual general user attributes. The structure of this structural enclosure group 856 is shown in FIG.

  The output target members of the structural frame are only placement systems, including pillars, pillar hardware, wall panels, wall frames, wall hardware, roof panels, trusses, floor assemblies, floor panels, floor hardware, foundations, ceiling panels, ceiling hardware, etc. Can be mentioned.

  As shown in FIG. 16, the arrangement is classified for each part type 802 (roof-attached), and the operation for each part type 802 is enabled by the CG application 6. Below the component type 802, a structure is described for each component 804. The output of the part shape is the same as in the case of the external group 852 described above.

<C. Specific examples of objects described in the input intermediate file 8>
Next, a specific example of an object described in the input intermediate file 8 will be described.

<< C1 >> Table and Vase Placed in LDK Inside House FIG. 17 shows a state inside LDK8531 inside the house. FIG. 18 shows a hierarchical structure of a part related to the table 85311 and the vase 8531 in the input intermediate file 8.

  As shown in FIG. 17, a table 85311 is placed in the LDK 8531, and a vase 85312 is placed on the table 85311.

  When these are viewed in the input intermediate file 8, LDK8531 is described as a room group under an internal group 853 under a house group 850 under a house root group 85 as shown in FIG. Under this LDK8531, a table 85311 and a vase 85312 are described as products. Furthermore, below the table 85311, a top plate and legs as Shape are described, and below the top plate and leg materials as Shell, respectively, below the top plate and leg materials. Indicates the faces 1 to n as Faces. Similarly, a vase as Shape is described under the vase 85312, a leg surface material as Shell is described under the vase, and surfaces 1 to n as Faces are described under the leg surface material.

  Here, “Product” is a hierarchy of a single component (product unit), in which attributes indicating the product information and the behavior of the component itself are set. Shape is a hierarchy that is decomposed into units that operate mainly in animation in a product. Shell is a collection of the same material. Face is a polygon which is a minimum unit of shape.

  As the Shell attribute, the material name “table top plate_wood” and the texture name “wood1.jpg” are set for the top surface material of the table 85311, and the material name “table leg_woody” is set for the leg surface material of the table 85311. "And the texture name" wood2.jpg "are set. The material name “vase glass_transparent” and the texture name “kabin1.jpg” are set for the leg material of the vase 85312.

  Since all objects have a material definition in the same way as the Product attribute, it is possible to refer to the material attribute separately using the material name as a key. In the material attributes, RGB values, diffuse reflectance, transmittance, texture size, and the like are defined.

  When changing the material of each object, the above shell is the minimum unit, but the material can be changed in a hierarchical unit higher than the shell. For example, by instructing the face (Face) to be changed, the upper group (Shell) to which the face belongs is searched to obtain the material name. When this hierarchy is raised by one, the upper (Shape) is selected. By further raising the hierarchy, the hierarchy to be selected can be changed, such as (Product), room, and house. As a result, it is possible to make a mechanism that allows batch change of materials having the same name belonging to the selected hierarchy or lower.

    FIG. 19 shows the main ones of general user attributes (see FIG. 7) as the products of the table 85311.

  As shown in FIG. 19, the value of the attribute “arrangement / main body flag” is 1, indicating that it is a main body. Since the value of the attribute “entity flag” is 0, it indicates an entity. The value of the attribute “classification” is “table”. The value of the attribute “input floor” is 1, indicating that it is arranged on the first floor. The value of the attribute “arrangement code” is 0, which indicates that it can be arranged at an arbitrary place in the room. The value of the attribute “height code” is 11, which indicates the floor height, that is, attachment based on the floor surface of each room. The value of the attribute “rounding code” is 0, which indicates that no rounding is possible, that is, the arrangement can be performed regardless of the building module. The value of the attribute “mounting height” is 0, which indicates that the floor is in direct contact with the floor. The value of the attribute “bird's eye view display OFF” is 0, which indicates that the display is not turned off even when the CG application 6 represents the bird's eye view. The value of the attribute “operation lock” is 111111100011, and indicates that the “CG direction deformation”, “Y direction deformation”, and “Z direction deformation” operations cannot be performed in the CG application 6. The value of the attribute “showing place flag” is 0, which indicates that the CG application 6 does not show up when the camera is called. In the attribute “CG comment”, a comment content for telop display in the CG application 6 is set. In the attribute “CG comment”, a jump destination URL from the CG application 6 is set. The value of the attribute “change flag” is 1, indicating that the CG application 6 has already been changed. The change content is stored in the attribute “change information”.

  FIG. 20 shows main ones of general user attributes (see FIG. 7) as products of the vase 85312.

  As shown in FIG. 20, the value of the attribute “arrangement / main body flag” is 1, indicating that it is a main body. Since the value of the attribute “entity flag” is 0, it indicates an entity. The value of the attribute “classification” is “tableware”. The value of the attribute “input floor” is 1, indicating that it is arranged on the first floor. The value of the attribute “arrangement code” is 0, which indicates that it can be arranged at an arbitrary place in the room. The value of the attribute “height code” is 23, which indicates that the upper surface of the member is aligned and superposed, that is, it is attached on the designated surface. However, the standard is the floor. For example, when the vase 85312 already placed on the table 85311 is moved to the outside of the upper surface of the table 85311, the upper surface alignment indicates the floor, and the vase 85312 is attached to the floor. It will not be an unnatural behavior that remains in the air. The value of the attribute “rounding code” is 0, which indicates that no rounding is possible, that is, the arrangement can be performed regardless of the building module. The value of the attribute “mounting height” is 735 and indicates the height of the arrangement point from the floor. The value of the attribute “bird's eye view display OFF” is 0, which indicates that the display is not turned off even when the CG application 6 represents the bird's eye view. The value of the attribute “operation lock” is 11111110000000, and operations of “X direction deformation”, “Y direction deformation”, “Z direction deformation”, “collision detection control”, and “shadow calculation control” are performed in the CG application 6. Indicates that it cannot be done. That is, the vase 85312 is not subject to collision determination at the walk-through and does not perform indirect light calculation. The value of the attribute “showing place flag” is 1, which indicates that it becomes a showing place candidate when the camera of the CG application 6 is called. In the attribute “CG comment”, a comment content for telop display in the CG application 6 is set. In the attribute “CG comment”, a jump destination URL from the CG application 6 is set. The value of the attribute “change flag” is 1, indicating that the CG application 6 has already been changed. The change content is stored in the attribute “change information”.

<< C2 >> Outside Wall of House FIG. 21 shows a hierarchical structure of a part of the input intermediate file 8 related to the outside wall of the house.

  As shown in FIG. 21, an edge stone 8011 and a square stone 8012 are described as products under a finishing material group 801 under an outer group 852 under a house group 850 under a house root group 85. Further, an entire surface as a shape is described below the edge stone 8011, an outer wall surface 1 and an outer wall surface 2 as a shell are respectively described below, and a face is provided below the outer wall surface 1 and the outer wall surface 2. 1 to n are respectively described. Similarly, the entire surface as Shape is described under the square stone 8012, and the outer wall surface 3 and the outer wall surface 4 as Shell are respectively described below, and below the outer wall surface 3 and the outer wall surface 4, respectively. Faces 1 to n as Faces are respectively described.

  Further, as the Shell attribute, the material name “Edgestone_MW” and the texture name “Edgestone MW.jpg” are set to the outer wall surface 1 and the outer wall surface 2 of the edge stone 8011, and the outer wall surface 3 and the outer wall surface of the square stone 8012 are set. 4 is set with a material name “Square Stone_MD” and a texture name “Edge Stone MD.jpg”.

  FIG. 22 shows main ones of general user attributes (see FIG. 7) as products of the outer wall.

  As shown in FIG. 22, the value of the attribute “arrangement / body flag” is 0, which indicates that it is an arrangement. Since the value of the attribute “substance flag” is 1, it indicates a link. The value of the attribute “classification” is “outer wall material”. The value of the attribute “input floor” is 1, indicating that it is arranged on the first floor. The value of the attribute “arrangement code” is 0, indicating that it can be arranged at an arbitrary location. The value of the attribute “height code” is 11, which indicates the floor height, that is, the attachment based on the floor surface. The value of the attribute “rounding code” is 0, which indicates that no rounding is possible, that is, the arrangement can be performed regardless of the building module. The value of the attribute “mounting height” is 0, which indicates that the floor is in direct contact with the floor. The value of the attribute “bird's eye view display OFF” is 0, which indicates that the display is not turned off even when the CG application 6 represents the bird's eye view. The value of the attribute “operation lock” is 111111100011, and indicates that the “CG direction deformation”, “Y direction deformation”, and “Z direction deformation” operations cannot be performed in the CG application 6. The value of the attribute “showing place flag” is 0, which indicates that the CG application 6 does not show up when the camera is called. The values of the attribute “CG comment” and the attribute “CG comment” are undefined. The value of the attribute “change flag” is 1, indicating that the CG application 6 has already been changed. The change content is stored in the attribute “change information”.

  The present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-mentioned embodiment is only a mere illustration in all points, and should not be interpreted limitedly. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

It is a schematic block diagram of the three-dimensional CG system for residential buildings concerning one embodiment of the present invention. It is the schematic of the hierarchical structure of the intermediate file for input output by the conversion from CAD data in the three-dimensional CG system for residential buildings concerning one Embodiment of this invention. The common attributes among the general user attributes added to all the groups described in the intermediate file for input are shown. The general user attribute of the finishing material group which puts together the part shape of the same finishing material and the same candidate color among the common groups of the input intermediate file is shown. The structure of the finishing material group is shown. The structure of the component type group for collecting the output components for each type in the common group of the input intermediate file is shown. Of the common group of the input intermediate file, the general user attribute of the Product group that describes the attribute and shape of the member input to the CAD data is shown. The general user attribute of the shell, which is a unit for describing the shape, in the common group of the intermediate file for input. The general user attribute of a house group is shown. Indicates the general user attribute of the specification group. Shows the structure of the external group. Shows the structure of internal groups. The general user attribute of a lid shape group is shown. The structure of the roof group is shown. The structure of the basic group is shown. The structure of the structural enclosure group is shown. The inside of LDK inside the house is shown. The hierarchical structure of the part related to the table and vase in the intermediate file for input is shown. Main attributes of general user attributes as products in the table are shown. The main ones among general user attributes as products of vases are shown. The hierarchical structure of the part related to the external wall of the house in the input intermediate file is shown. The main user attributes as products of the outer wall are shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 3D CG system 2 Computer apparatus 3 Input apparatus 4 Display apparatus 5 CAD software 5a Converter 6 CG application 7 CAD data 8 Input intermediate file 801 Finishing material group 802 Parts type group 803 Product group 804 Product group 805 Product group 806 Shape group 807 Shell group 808 Room group 809 Bird's eye lid group 8090 Lid shape group 81 Material 82 Texture 83 Camera 84 Light source 85 House route group 850 House group 851 Specification group 852 External group 853 Inside Group 8531 LDK
85311 Table 85312 Vase 854 Roof group 855 Foundation group 856 Structural frame group 9 Intermediate file for output

Claims (7)

Storage means for storing component information including at least three-dimensional shape data for each component constituting the house, display means, and input means, and a computer graphic based on the component information stored in the storage means 3D CG system for home construction that can virtually construct a house and perform three-dimensional display on the display means, and can change the component element information and the three-dimensional display contents according to an operation from the input means Because
The component information is to have a hierarchical data structure comprising a plurality of groups are hierarchized into a plurality of layers,
The hierarchical data structure includes a housing specification information group related to the specification of the house, a housing external information group related to the outside of the house, and the house in a lower hierarchy of the individual house information group of the component information corresponding to one house. A house interior information group regarding the interior of the house, a house roof information group regarding the roof of the house, a house foundation information group regarding the foundation of the house, and a housing structure body information group regarding the structure body of the house,
The hierarchical data structure has an all-housing information group that groups a plurality of the individual housing information groups at a higher hierarchy of the individual housing information group,
The hierarchical data structure further includes a finishing material group for grouping site shapes of components having the same finishing material and the same candidate color among the components constituting the house, and parts in the components constituting the house. There are parts types grouped together for each type,
Each component belonging to each group has predetermined attribute information for each group,
The attribute information includes classification information for indicating the classification name of each constituent element and at least selecting an appropriate process for the drag-and-drop operation, and performing the drag-and-drop operation in the three-dimensional display. If the category information of the dragged component and the category information of the drop-destination component are the same, a process of replacing the drop-destination component with the dragged component is performed, If the dragged component element classification information and the drop destination component element classification information are different, a process of placing the dragged component element on the drop destination component element is performed,
The attribute information further includes reference height classification information indicating at least which floor level and the height level including the designated surface to which each component is attached, and the reference height classification information indicates the attribute information. A three-dimensional CG system for residential buildings, wherein the three-dimensional display is performed by determining how to attach each component based on a height level . In the three-dimensional CG system for residential buildings according to claim 1 ,
The said attribute information contains the input floor information which shows the floor where each component is arrange | positioned, The three-dimensional CG system for residential buildings characterized by the above-mentioned. In the three-dimensional CG system for residential buildings according to claim 1 ,
The three-dimensional CG system for residential buildings, wherein the attribute information includes bird's-eye display flag information indicating whether or not display is performed when bird's-eye display is performed on the display means. In the three-dimensional CG system for residential buildings according to claim 1 ,
The attribute information includes change flag information indicating whether or not the component element information and the three-dimensional display content have been changed according to an operation from the input unit, and change content information when the change has been made. A three-dimensional CG system for residential buildings characterized by including: In the three-dimensional CG system for residential buildings according to claim 4 ,
The three-dimensional CG system for residential buildings, wherein the change content information can be output for each component indicating that the change flag information has been changed in accordance with an operation from the input means. . In the three-dimensional CG system for residential buildings according to any one of claims 1 to 5 ,
The component information is in an XVL file format, and is a 3D CG system for residential buildings. The hierarchical data structure of the said component element information used for the three-dimensional CG system for residential buildings of any one of Claim 1 thru | or 6 .

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