CN108055351B - Three-dimensional file processing method and device - Google Patents
Three-dimensional file processing method and device Download PDFInfo
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- H04L67/00—Network arrangements or protocols for supporting network services or applications
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Abstract
The invention discloses a method and a device for processing a three-dimensional file, relates to the technical field of data processing, and mainly aims to solve the problems that the existing three-dimensional file in a BIM file format occupies too large internal memory, occupies larger network resources during network transmission and influences data transmission, and is not beneficial to quick loading and display of the three-dimensional file after transmission is finished, and influences the display efficiency of the three-dimensional file. The main technical scheme is as follows: when a three-dimensional file transmission instruction is received, generating a three-dimensional display file according to three-dimensional display data in the three-dimensional file; generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file; and generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file.
Description
Technical Field
The present invention relates to the field of data processing technologies, and in particular, to a method and an apparatus for processing a three-dimensional file.
Background
With the wide application of three-dimensional modeling software in the field of integrated construction, the lightweight display of the existing three-dimensional files is particularly important, namely, the efficient display of the three-dimensional files through a webpage or a mobile terminal device becomes the focus of attention of three-dimensional modeling software developers.
At present, the existing commonly used three-dimensional files are transmitted in a BIM file format of a building information model, and then are displayed in a 3D drawing protocol mode by using a display platform or a browser in terminal equipment. However, the memory occupied by the three-dimensional file in the BIM file format is too large, so that a large amount of network resources are occupied during network transmission, data transmission is affected, and after transmission is completed, rapid loading and display of the three-dimensional file are not facilitated, and the display efficiency of the three-dimensional file is affected.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for processing a three-dimensional file, and mainly aims to solve the problems that an existing three-dimensional file in a BIM file format occupies too much memory, occupies relatively large network resources during network transmission, affects data transmission, and is not beneficial to fast loading and displaying of the three-dimensional file after transmission is completed, and affects display efficiency of the three-dimensional file.
According to an aspect of the present invention, there is provided a method for processing a three-dimensional file, including:
when a three-dimensional file transmission instruction is received, generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file, wherein the three-dimensional display data is data for reflecting the display content of a three-dimensional model;
generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file;
and generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format.
Further, before the generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file, the method further includes:
judging whether material data, geometric data, light data, camera data and/or cultural data exist in the three-dimensional file or not;
the generating of the three-dimensional display file according to the three-dimensional display data existing in the three-dimensional file includes:
and if the texture data exists, respectively generating a texture data file, a geometric data file, a light data file, a camera data file and/or a literary data file according to the texture data, the geometric data, the light data and/or the camera data and/or the literary data.
Further, after the three-dimensional display file is generated according to the three-dimensional display data existing in the three-dimensional file when the three-dimensional file transmission instruction is received, the method further includes:
and writing the material data file, the geometric data file, the light data file, the camera data file and the literary data file into a preset binary stream file to obtain a data stream file with a file header, a data segment set, a data segment type, a data segment table and a file bottom.
Further, after generating a manifest file according to the file entries of the three-dimensional display file, the instance tree file, the fragment group file, and the metadata file, the method further includes:
when a file packet containing the data stream file, the case tree file, the fragment group file, the metadata file and the manifest file in a preset file format is received, loading the metadata file, the fragment group file and the case tree file according to an input sequence in the manifest file;
and if the loading is finished, loading a material data file, and/or a geometric data file, and/or a light data file, and/or a camera data file, and/or a literary data file according to the data stream file, and respectively analyzing the material data in the material data file, the geometric data in the geometric data file, the light data in the light data file, the camera data in the camera data file, and/or the literary data in the literary data file.
Further, after the metadata file, the fragment group file, and the case tree file are respectively loaded according to the entry sequence in the manifest file when a file package containing the preset file format of the data stream file, the case tree file, the fragment group file, the metadata file, and the manifest file is received, the method further includes:
and judging whether the metadata file, the fragment group file and the case tree file can be completely loaded, if the loading is incomplete, sending a missing file entry and re-acquiring the missing file for loading.
Further, the method further comprises:
and performing data reverse analysis on the loaded metadata file, the fragment group file and the case tree file through a preset 3D drawing protocol, and performing three-dimensional model display according to an analysis result and analyzed material data, geometric data, camera data and/or cultural data.
According to an aspect of the present invention, there is provided a three-dimensional file processing apparatus, including:
the three-dimensional display device comprises a first generating unit, a second generating unit and a display unit, wherein the first generating unit is used for generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file when a three-dimensional file transmission instruction is received, and the three-dimensional display data is data for showing the display content of a three-dimensional model;
the processing unit is used for generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file;
and the second generating unit is used for generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format.
Further, the apparatus further comprises: a judging unit for judging whether the received signal is a signal,
the judging unit is used for judging whether material data, geometric data, light data, camera data and/or cultural data exist in the three-dimensional file or not;
the first generating unit is specifically configured to, if the determining unit determines that the three-dimensional file has the texture data, the geometric data, the light data, the camera data, and/or the literary data, generate a texture data file, a geometric data file, a light data file, a camera data file, and/or a literary data file according to the texture data, the geometric data, the light data, and/or the camera data, and/or the literary data, respectively.
Further, the apparatus further comprises:
and the writing unit is used for writing the material data file, the geometric data file, the light data file, the camera data file and the physical data file into a preset binary stream file to obtain the data stream file with a file header, a data segment set, a data segment type, a data segment table and a file bottom.
Further, the method also comprises the following steps:
a loading unit, configured to load the metadata file, the fragment group file, and the case tree file according to an entry sequence in the manifest file when receiving a file package in a preset file format that includes the data stream file, the case tree file, the fragment group file, the metadata file, and the manifest file;
and the analysis unit is used for loading the material data file, the geometric data file, the light data file, the camera data file and/or the literary data file according to the data stream file if the loading is finished, and respectively analyzing the material data in the material data file, the geometric data in the geometric data file, the light data in the light data file, the camera data in the camera data file and/or the literary data in the literary data file.
Further, the air conditioner is provided with a fan,
the judging unit is further configured to judge whether the metadata file, the fragment group file, and the case tree file can be completely loaded, and if the metadata file, the fragment group file, and the case tree file are incompletely loaded, send a missing file entry and re-acquire the missing file for loading.
Further, the apparatus further comprises:
and the display unit is used for carrying out data reverse analysis on the loaded metadata file, the fragment group file and the case tree file through a preset 3D (three-dimensional) drawing protocol, and carrying out three-dimensional model display according to an analysis result and analyzed material data, geometric data, camera data and/or grammatical data.
According to another aspect of the present invention, there is provided a storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to perform operations corresponding to the processing method of the three-dimensional file.
According to still another aspect of the present invention, there is provided a terminal including: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction enables the processor to execute the operation corresponding to the processing method of the three-dimensional file.
By the technical scheme, the technical scheme provided by the embodiment of the invention at least has the following advantages:
the invention provides a method and a device for processing a three-dimensional file, which comprises the steps of firstly, when receiving a three-dimensional file transmission instruction, generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file, wherein the three-dimensional display data is data representing the display content of a three-dimensional model, then generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, generating a metadata file according to the data parameters in the three-dimensional file, generating a manifest file according to the three-dimensional display file, the case tree file, the fragment group file and the file entries of the metadata file, and transmitting the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file in a file package form of a preset file format. Compared with the existing common three-dimensional file which is transmitted in the BIM file format of the building information model and then displayed in a 3D (three-dimensional) drawing protocol mode by using a display platform or a browser in terminal equipment, the embodiment of the invention disassembles the data in the three-dimensional file to disassemble the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the list file, and transmits the files in the file packet form of the preset file format, thereby accelerating the data transmission speed and ensuring the rapid loading and display of the three-dimensional display data.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a flow chart of a method for processing a three-dimensional file according to an embodiment of the present invention;
FIG. 2 is a flow chart of another three-dimensional file processing method provided by the embodiment of the invention;
FIG. 3 is a diagram illustrating an XDS file structure provided by an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a process of generating a file package according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating a flow of reading a file package according to an embodiment of the present invention;
FIG. 6 is a block diagram of a device for processing a three-dimensional file according to an embodiment of the present invention;
FIG. 7 is a block diagram of another three-dimensional file processing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
An embodiment of the present invention provides a method for processing a three-dimensional file, as shown in fig. 1, the method includes:
101. and when a three-dimensional file transmission instruction is received, generating a three-dimensional display file according to three-dimensional display data in the three-dimensional file.
The three-dimensional display Data is Data reflecting the display content of the three-dimensional model, and comprises Material Data, geometric Data, light Data, camera Data, cultural Data and the like, wherein the Material Data (Material Data) refers to Material information of the three-dimensional model, such as metal materials or wood materials and the like; geometric Data (Geometry Data) refers to geometric information of a three-dimensional model, such as a Bounding Box (Bounding Box); the Light Data (Light Data) refers to the current Light information of the three-dimensional model, such as color, intensity, etc.; the Camera Data (Camera Data) refers to the photographing angle corresponding to the three-dimensional model, such as the Camera position, the target position, and the like; the Texture Data (Texture Data) refers to the Texture of the three-dimensional model, such as a wave picture, and the embodiment of the present invention is not limited in detail. The three-dimensional display file is used for respectively generating the material data, the geometric data, the light data, the camera data, the cultural data and the like into corresponding material files, geometric files, light files, camera files and cultural files so as to disassemble the display data of the three-dimensional model into a plurality of subfiles.
It should be noted that the three-dimensional file transmission instruction is a transmission event triggered by a user and used for transmitting the three-dimensional file from the device at one end to the device at the other end, so as to display the three-dimensional model on the device at the other end. In addition, the three-dimensional display data in the three-dimensional file may include one or more of material data, geometric data, light data, camera data, and cultural data, and the embodiment of the present invention is not particularly limited.
102. And generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to the data parameters in the three-dimensional file.
The Instance Tree (Instance Tree) file is a Tree structure file in an XDS format, and the relationship between each child node and root node in the Tree structure can represent the logical relationship between three-dimensional display data in the three-dimensional file, for example, the root node of the first layer is the name of a three-dimensional model, the nodes of the second layer are display data included in the three-dimensional model, such as material data, light data, and the like, and if the material data includes multiple materials, the third layer represents different material data, and so on. In order to reduce the memory occupied by the network transmission of the case tree file transmission, the case tree file is scattered to obtain a Fragment List file, and the data fragments of the Fragment List file can enable the system to quickly access related data, such as Fragment data of geometric data, Fragment data of camera data, and the like. In order to further split the three-dimensional file and avoid missing key data of the file, file data parameters, such as units of the three-dimensional file, are generated into a Metadata (Metadata) file.
It should be noted that the fragment group file is to break up the presentation data with logical relationship in the case tree file, so as to increase the output speed and ensure the logical relationship between the files.
103. And generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file.
For the embodiment of the invention, the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format, so that the lack or omission of three-dimensional data in the transmission process is avoided. The file entries may be file names or file identifiers when generating three-dimensional presentation files, case tree files, fragment group files, metadata files, and the like, and then are recorded in the manifest file according to the order of generating the files to obtain the manifest file.
It should be noted that, the three-dimensional display file, the case tree file, the fragment group file, the metadata file, and the manifest file are transmitted in a BMV format file package, which can greatly reduce the traffic waste during transmission and improve the network transmission speed.
Compared with the existing common three-dimensional file which is transmitted in a BIM file format of a building information model and then displayed in a 3D (three-dimensional) drawing protocol mode by using a display platform or a browser in terminal equipment, the processing method of the three-dimensional file has the advantages that the data in the three-dimensional file are disassembled to obtain the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the list file, and the files are transmitted in a file packet mode of a preset file format, so that the data transmission speed is accelerated, and the rapid loading and display of the three-dimensional display data are ensured.
An embodiment of the present invention provides another three-dimensional file processing method, as shown in fig. 2, the method includes:
201. it is determined whether material data, and/or geometric data, and/or light data, and/or camera data, and/or literary data are present in the three-dimensional file.
For the embodiment of the present invention, in order to accurately distinguish the three-dimensional display data in the three-dimensional file into different types of data and generate corresponding subfiles, it is necessary to determine whether material data, geometric data, and/or light data, and/or camera data, and/or grammatical data exist in the three-dimensional file, where these data may all exist, or may exist partially or completely, and the determination of the warrior data in the three-dimensional file may be arbitrary, which is not specifically limited in the present invention.
It should be noted that, the step of determining whether the texture data, the geometric data, the light data, the camera data, and the literature data exist in the three-dimensional file may specifically be to search for a mark or a data name corresponding to the texture data, the geometric data, the light data, the camera data, and the literature data from the three-dimensional file, and the embodiment of the present invention is not limited specifically.
202. And if the texture data exists, respectively generating a texture data file, a geometric data file, a light data file, a camera data file and/or a literary data file according to the texture data, the geometric data, the light data and/or the camera data and/or the literary data.
For the embodiment of the invention, in order to split the display data in the three-dimensional file into a plurality of small subfiles so as to improve the transmission speed, the material data, and/or the geometric data, and/or the light data, and/or the camera data, and/or the cultural data are required to generate corresponding subfiles respectively. Extracting material data to generate a material file; extracting geometric data to generate a geometric file; extracting light data to generate a light file, wherein the light file can comprise a light group (LightList) file of the light data related to the fragments and a light definition file of the data such as light color, light intensity and the like; extracting Camera data to generate a Camera file including a Camera group (Camera List) file of the Camera data related to the patch and a Camera definition file defining a Camera position and a target position; the embodiment of the present invention is not particularly limited, and the grammatical data is extracted to generate the grammatical file.
203. And writing the material data file, the geometric data file, the light data file, the camera data file and the literary data file into a preset binary stream file to obtain a data stream file with a file header, a data segment set, a data segment type, a data segment table and a file bottom.
For the embodiment Of the present invention, in order to further speed up reading and writing Of the material Data file, the geometric Data file, the light Data file, the camera Data file, and the text Data file, on the basis Of generating the subfile in the BMV format, each Of the subfiles is written into a preset binary stream file, which is a file in the xds (xdata stream) format, as shown in fig. 3, and includes a Header (Header) in which basic information Of the file, such as version and the like, is described, a Data Segment set (Data Segment Type) in which specific Data is described, for example, if the subfile is geometric Data, a plurality Of line segments are described, and a specific Type Of each Data Segment is described, for example, the data segment set includes geometric data and grammatical data, and the types of line segments and stripe grammatical are described in the data segment types, such as a square and a picture, the data segment table describes several types of data in the data segment set and the position of each type of data in the file, and the file bottom describes the file position of the data segment table of the data segment set.
It should be noted that, the material data file, and/or the geometric data file, and/or the light data file, and/or the camera data file, and/or the text data file in the BMV file package are written into an XDS file that can describe all subfiles, so that in the network transmission process, the traffic waste in the transmission process is further reduced, and the transmission speed is increased.
204. And generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to the data parameters in the three-dimensional file.
This step is the same as step 102 shown in fig. 1, and is not described herein again.
205. And generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file.
This step is the same as step 103 shown in fig. 1, and is not described herein again.
It should be noted that, as shown in fig. 4, file entries of a material data file, a geometric data file, a light data file, a camera data file, a cultural data file, a case tree file, a fragment group file, and a metadata file may be directly written into a manifest file when generating corresponding files, so as to ensure that the file entries in the manifest file are arranged in order, so as to be read according to data when reading the file entries in the manifest file, and after generating all subfiles, the file entries may be written into the manifest file according to the order of generating the subfiles. In addition, since the data of the material data file, the geometry data file, the lighting data file, the camera data file, and the literature data file are described in the data stream file, after step 205, the method further includes: and sending the BMV file packet comprising the data stream file, the case tree file, the fragment group file, the metadata file and the manifest file to a receiving end so as to transmit the three-dimensional file to the receiving end.
206. And when a file package containing the preset file formats of the data stream file, the case tree file, the fragment group file, the metadata file and the manifest file is received, loading the metadata file, the fragment group file and the case tree file according to the input sequence in the manifest file.
For the embodiment of the present invention, when a file packet containing the preset file format of the data stream file, the instance tree file, the fragment group file, the metadata file, and the manifest file is received in a receiving end, in order to quickly read data in the file packet, the element file, the shard group file, the instance tree file may be read from the file manifest in an order opposite the order of entry, in order to determine the file type of the three-dimensional model, the fragment files of the subfiles and the instance tree file of the logical relationship between the respective subfiles, thereby determining the integral frame of the three-dimensional model, extracting the three-dimensional model display from the common display of all data, and then, the material data, the geometric data, the light data, the camera data and the cultural data of the three-dimensional model are rendered step by step, so that the reading efficiency of the three-dimensional model is improved.
207. And judging whether the metadata file, the fragment group file and the case tree file can be completely loaded, if the loading is incomplete, sending a missing file entry and re-acquiring the missing file for loading.
For the embodiment of the present invention, in order to ensure that data is not lost in the three-dimensional file transmission process, it is necessary to determine whether the metadata file, the fragment group file, and the case tree file loaded according to the file directory in the manifest file are complete, specifically, it may be determined whether the metadata file, the fragment group file, and the case tree file can be loaded, and if the metadata file, the fragment group file, and the case tree file cannot be loaded, the missing file entry is sent to the sending end, so that the sending end resends the missing file, and integrity and stability of the three-dimensional model display of the receiving end are ensured.
208. And if the loading is finished, loading a material data file, and/or a geometric data file, and/or a light data file, and/or a camera data file, and/or a literary data file according to the data stream file, and respectively analyzing the material data in the material data file, the geometric data in the geometric data file, the light data in the light data file, the camera data in the camera data file, and/or the literary data in the literary data file.
For the embodiment of the present invention, since the data stream file includes all subfiles, in order to extract the material data, the geometric data, the lighting data, the camera data, the literary data, and the like of the three-dimensional model from the data stream file, it is necessary to load the corresponding material data file, the geometric data file, the lighting data file, the camera data file, and the literary data file from the data stream file, so as to combine with the metadata file, the fragment group file, and the case tree file that have been loaded, obtain a complete three-dimensional model, and avoid that a certain file is lost and all the file packages need to be loaded again.
209. And performing data reverse analysis on the loaded metadata file, the fragment group file and the case tree file through a preset 3D drawing protocol, and performing three-dimensional model display according to an analysis result and analyzed material data, geometric data, camera data and/or cultural data.
The preset 3D mapping protocol is WebGL, and supports displaying an application program of a terminal device such as a mobile phone platform and a browser, and the reverse parsing is a process opposite to the process of generating a metadata file, a fragment group file, and a case tree file, for example, the fragment group file is reassembled, and a logical relationship of each display data is parsed from the case tree, and the embodiment of the present invention is not particularly limited. The three-dimensional model is displayed through the analysis result and the analyzed material data, geometric data, camera data and cultural data, so that the speed required by displaying the three-dimensional model is greatly increased, and the efficiency of reading the three-dimensional model data is improved.
It should be noted that, in the embodiment of the present invention, when loading the received ask packet, the loading may be performed according to the steps shown in fig. 5, and the embodiment of the present invention is not limited specifically.
The invention provides another three-dimensional file processing method, the embodiment of the invention disassembles the data in the three-dimensional file, disassembles the data to obtain a data stream file, a case tree file, a fragment group file, a metadata file and a list file which contain a material data file, a geometric data file, a light data file and/or a camera data file and/or a literary data file and write the data stream file, the case tree file, the fragment group file, the metadata file and the list file into an XDS format file, sends the files to a receiving end in a BMV file packet form, the receiving end loads subfiles according to the file entries in the file list after receiving the files, if the files are loaded incompletely, the files with the missing file entries are reloaded, the three-dimensional file is prevented from being lost in the transmission process and needing to be completely reloaded, the data transmission speed is further accelerated by using the data stream file, and ensuring the quick loading and display of the three-dimensional display data.
Further, as an implementation of the method shown in fig. 1, an embodiment of the present invention provides an apparatus for processing a three-dimensional file, as shown in fig. 6, the apparatus includes: a first generating unit 31, a processing unit 32, a second generating unit 33.
The first generating unit 31 is configured to generate a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file when a three-dimensional file transmission instruction is received, where the three-dimensional display data is data representing display contents of a three-dimensional model; the first generating unit 31 is a program module for a processing device of the three-dimensional file to execute, when receiving a three-dimensional file transmission instruction, a three-dimensional display file generated according to three-dimensional display data existing in the three-dimensional file.
The processing unit 32 is configured to generate a case tree file according to the model display logic in the three-dimensional file, break up the case tree file to obtain a fragment group file, and generate a metadata file according to the data parameters in the three-dimensional file; the processing unit 32 is a program module for executing, by a processing device of the three-dimensional file, a case tree file generated according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to the data parameters in the three-dimensional file.
A second generating unit 33, configured to generate a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file, and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file, and the manifest file are subjected to data transmission in a file package form of a preset file format. The second generating unit 33 executes a program module for generating a manifest file for a processing means of a three-dimensional file from file entries of the three-dimensional presentation file, the instance tree file, the fragment group file, and the metadata file.
Compared with the existing common three-dimensional file which is transmitted in a BIM file format of a building information model and then displayed in a 3D (three-dimensional) drawing protocol mode by using a display platform or a browser in terminal equipment, the processing device of the three-dimensional file has the advantages that the data in the three-dimensional file are disassembled to obtain the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the list file, and the files are transmitted in a file packet mode of a preset file format, so that the data transmission speed is increased, and the rapid loading and display of the three-dimensional display data are ensured.
Further, as an implementation of the method shown in fig. 2, an embodiment of the present invention provides another three-dimensional file processing apparatus, as shown in fig. 7, the apparatus includes: a first generating unit 41, a processing unit 42, a second generating unit 43, a judging unit 44, a writing unit 45, a loading unit 46, an analyzing unit 47, and a presenting unit 48.
A first generating unit 41, configured to generate a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file when a three-dimensional file transmission instruction is received, where the three-dimensional display data is data representing display contents of a three-dimensional model;
the processing unit 42 is configured to generate a case tree file according to the model display logic in the three-dimensional file, break up the case tree file to obtain a fragment group file, and generate a metadata file according to the data parameters in the three-dimensional file;
a second generating unit 43, configured to generate a manifest file according to the file entries of the three-dimensional display file, the instance tree file, the fragment group file, and the metadata file, so that the three-dimensional display file, the instance tree file, the fragment group file, the metadata file, and the manifest file are subjected to data transmission in a file package form of a preset file format.
Further, the apparatus further comprises: the judgment unit 44 is used to judge whether the signal is correct,
the judging unit 44 is used for judging whether the three-dimensional file has texture data, geometric data, light data, camera data and/or cultural data;
the first generating unit 41 is specifically configured to, if the determining unit 41 determines that the material data, the geometric data, and/or the light data, and/or the camera data, and/or the literary data exist in the three-dimensional file, generate a material data file, a geometric data file, and/or a light data file, and/or a camera data file, and/or a literary data file, respectively, according to the material data, the geometric data, and/or the light data, and/or the literary data.
Further, the apparatus further comprises:
and a writing unit 45, configured to write the material data file, and/or the geometric data file, and/or the light data file, and/or the camera data file, and/or the physical data file into a preset binary stream file, so as to obtain a data stream file having a file header, a data segment set, a data segment type, a data segment table, and a file bottom.
Further, the method also comprises the following steps:
a loading unit 46, configured to load the metadata file, the fragment group file, and the case tree file according to an entry sequence in the manifest file when receiving a file package in a preset file format that includes the data stream file, the case tree file, the fragment group file, the metadata file, and the manifest file;
and the analyzing unit 47 is configured to, if the loading is completed, load the material data file, and/or the geometric data file, and/or the light data file, and/or the camera data file, and/or the literary data file according to the data stream file, and analyze the material data in the material data file, and/or the geometric data in the geometric data file, and/or the light data in the light data file, and/or the camera data in the camera data file, and/or the literary data in the literary data file, respectively.
Further, the air conditioner is provided with a fan,
the determining unit 44 is further configured to determine whether the metadata file, the fragment group file, and the instance tree file can be completely loaded, and if the metadata file, the fragment group file, and the instance tree file are not completely loaded, send a missing file entry and obtain the missing file again for loading.
Further, the apparatus further comprises:
and the display unit 48 is configured to perform data reverse analysis on the loaded metadata file, the loaded fragment group file, and the loaded case tree file through a preset 3D mapping protocol, and perform three-dimensional model display according to an analysis result and analyzed material data, and/or geometric data, and/or camera data, and/or grammatical data.
The invention provides another three-dimensional file processing device, which comprises a data stream file, a case tree file, a fragment group file, a metadata file and a list file, wherein the data stream file, the case tree file, the fragment group file, the metadata file and the list file are written into an XDS format file by disassembling data in a three-dimensional file, and/or a geometric data file, and/or a light data file, and/or a camera data file and/or a literary data file, the files are sent to a receiving end in a BMV file packet mode, the receiving end loads subfiles according to file entries in a file list after receiving the files, if the files are loaded incompletely, the files with missing file entries are reloaded, the situation that the three-dimensional file loses the files in the transmission process and needs to be completely reloaded is avoided, the data transmission speed is further accelerated by using the data stream file, and ensuring the quick loading and display of the three-dimensional display data.
According to an embodiment of the present invention, a storage medium is provided, where at least one executable instruction is stored, and the computer executable instruction can execute the processing method of the three-dimensional file in any method embodiment.
Fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present invention, and the specific embodiment of the present invention does not limit the specific implementation of the terminal.
As shown in fig. 8, the terminal may include: a processor (processor)502, a Communications Interface 504, a memory 506, and a communication bus 508.
Wherein: the processor 502, communication interface 504, and memory 506 communicate with one another via a communication bus 508.
A communication interface 504 for communicating with network elements of other devices, such as clients or other servers.
The processor 502 is configured to execute the program 510, and may specifically execute relevant steps in the foregoing embodiment of the three-dimensional file processing method.
In particular, program 510 may include program code that includes computer operating instructions.
The processor 502 may be a central processing unit CPU, or an Application Specific Integrated Circuit (ASIC), or one or more Integrated circuits configured to implement an embodiment of the present invention. The terminal comprises one or more processors, which can be the same type of processor, such as one or more CPUs; or may be different types of processors such as one or more CPUs and one or more ASICs.
And a memory 506 for storing a program 510. The memory 506 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.
The program 510 may specifically be used to cause the processor 502 to perform the following operations:
when a three-dimensional file transmission instruction is received, generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file, wherein the three-dimensional display data is data for reflecting the display content of a three-dimensional model;
generating a case tree file according to the model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file;
and generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components in the method and apparatus for processing three-dimensional files according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A method for processing a three-dimensional file, comprising:
when a three-dimensional file transmission instruction is received, generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file, wherein the three-dimensional display data are data which embody three-dimensional model display contents and comprise one or more of material data, geometric data, light data, camera data and cultural data, the three-dimensional display file comprises one or more of material data files, geometric data files, light data files, camera data files and cultural data files, and the three-dimensional file transmission instruction is a transmission event triggered by a user and used for transmitting the three-dimensional file from one end device to the other end device;
generating a case tree file according to model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file, wherein the case tree file is a file with a tree structure in an XDS format, the relation between each child node and a root node in the tree structure corresponds to the logical relation between three-dimensional display data in the three-dimensional file, the fragment group file is obtained by scattering three-dimensional display data with logical relations in the case tree file, and the metadata file is generated by key data in the three-dimensional file;
and generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format.
2. The method of claim 1, wherein prior to generating a three-dimensional presentation file from three-dimensional presentation data present in the three-dimensional file, the method further comprises:
judging whether material data, geometric data, light data, camera data and/or cultural data exist in the three-dimensional file or not;
the generating of the three-dimensional display file according to the three-dimensional display data existing in the three-dimensional file includes:
and if the texture data exists, respectively generating a texture data file, a geometric data file, a light data file, a camera data file and/or a literary data file according to the texture data, the geometric data, the light data and/or the camera data and/or the literary data.
3. The method according to claim 2, wherein after the step of generating the three-dimensional presentation file according to the three-dimensional presentation data existing in the three-dimensional file when the three-dimensional file transmission instruction is received, the method further comprises:
and writing the material data file, the geometric data file, the light data file, the camera data file and the literary data file into a preset binary stream file to obtain a data stream file with a file header, a data segment set, a data segment type, a data segment table and a file bottom.
4. The method of claim 3, wherein after generating a manifest file from the file entries of the three-dimensional presentation file, the instance tree file, the shard group file, and the metadata file, the method further comprises:
when a file packet containing the data stream file, the case tree file, the fragment group file, the metadata file and the manifest file in a preset file format is received, loading the metadata file, the fragment group file and the case tree file according to an input sequence in the manifest file;
and if the loading is finished, loading a material data file, and/or a geometric data file, and/or a light data file, and/or a camera data file, and/or a literary data file according to the data stream file, and respectively analyzing the material data in the material data file, the geometric data in the geometric data file, the light data in the light data file, the camera data in the camera data file, and/or the literary data in the literary data file.
5. The method according to claim 4, wherein when receiving a file package containing a preset file format of the data stream file, the instance tree file, the fragment group file, the metadata file, and the manifest file, after loading the metadata file, the fragment group file, and the instance tree file, respectively, in an order of entry in the manifest file, the method further comprises:
and judging whether the metadata file, the fragment group file and the case tree file can be completely loaded, if the loading is incomplete, sending a missing file entry and re-acquiring the missing file for loading.
6. The method of claim 5, further comprising:
and performing data reverse analysis on the loaded metadata file, the fragment group file and the case tree file through a preset 3D drawing protocol, and performing three-dimensional model display according to an analysis result and analyzed material data, geometric data, camera data and/or cultural data.
7. A device for processing a three-dimensional document, comprising:
the three-dimensional display system comprises a first generation unit, a second generation unit and a third generation unit, wherein the first generation unit is used for generating a three-dimensional display file according to three-dimensional display data existing in the three-dimensional file when receiving a three-dimensional file transmission instruction, the three-dimensional display data are data which embody three-dimensional model display contents and comprise one or more of material data, geometric data, light data, camera data and cultural data, the three-dimensional display file comprises one or more of material data files, geometric data files, light data files, camera data files and cultural data files, and the three-dimensional file transmission instruction is a transmission event triggered by a user and used for transmitting the three-dimensional file from one end device to the other end device;
the processing unit is used for generating a case tree file according to model display logic in the three-dimensional file, scattering the case tree file to obtain a fragment group file, and generating a metadata file according to data parameters in the three-dimensional file, wherein the case tree file is a file with a tree structure in an XDS format, the relation between each child node and each root node in the tree structure corresponds to the logical relation between three-dimensional display data in the three-dimensional file, the fragment group file is obtained by scattering three-dimensional display data with logical relations in the case tree file, and the metadata file is generated by key data in the three-dimensional file;
and the second generating unit is used for generating a manifest file according to the file entries of the three-dimensional display file, the case tree file, the fragment group file and the metadata file, so that the three-dimensional display file, the case tree file, the fragment group file, the metadata file and the manifest file are subjected to data transmission in a file package form of a preset file format.
8. The apparatus of claim 7, further comprising: a judging unit for judging whether the received signal is a signal,
the judging unit is used for judging whether material data, geometric data, light data, camera data and/or cultural data exist in the three-dimensional file or not;
the first generating unit is specifically configured to, if the determining unit determines that the three-dimensional file has the texture data, the geometric data, the light data, the camera data, and/or the literary data, generate a texture data file, a geometric data file, a light data file, a camera data file, and/or a literary data file according to the texture data, the geometric data, the light data, and/or the camera data, and/or the literary data, respectively.
9. A storage medium having at least one executable instruction stored therein, the executable instruction causing a processor to perform operations corresponding to the method for processing a three-dimensional file according to any one of claims 1 to 6.
10. A terminal, comprising: the system comprises a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface complete mutual communication through the communication bus;
the memory is used for storing at least one executable instruction, and the executable instruction causes the processor to execute the operation corresponding to the processing method of the three-dimensional file according to any one of claims 1-6.
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| CN113034663B (en) * | 2019-12-09 | 2023-09-19 | 北京博超时代软件有限公司 | GIM model light weight processing method and device, equipment and storage medium |
| CN112258629A (en) * | 2020-10-16 | 2021-01-22 | 珠海格力精密模具有限公司 | Mold manufacturing processing method and device and server |
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