CN116091725B - 3D large-model web rendering lightweight rapid display method - Google Patents
3D large-model web rendering lightweight rapid display method Download PDFInfo
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Abstract
The invention discloses a light-weight rapid display method for 3D large-model web rendering, which is used for acquiring the effect, time and priority of transmitting 3D model data, a 3D model theoretical calculation model and building rendering of different building BIM model files; when the data compression algorithm is connected with different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, acquiring current light-weight display data on a BIM model file data separation receiving channel in unit time, and determining the rendering effect of BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, data separation information and the current light-weight display data; the method can rapidly process the BIM file data and ensure that the BIM file data is processed in time, and the measurement result is more accurate by filtering errors.
Description
Technical Field
The invention relates to the field of building rendering, in particular to a light-weight rapid display method for 3D large-model web rendering.
Background
The traditional BIM building information model generally needs professional modeling software to open and browse, and the installation cost and hardware configuration requirements of the software are high, and meanwhile, the BIM building information model is difficult to integrate with other application software systems. The building of BIM models is currently based on a large amount of networking, so the size of the compression rate of the model to be generated finally is critical, as this involves the network transmission time of the model. If the lightweight model is too large, the downloading time is too long, and the user experience can be directly affected.
BIM models are quite large, and BIM models 1-2G of a single building are common phenomena. Such models are not very useful in everyday managed 3D visualization applications and therefore often require light weight. The light weight process of the BIM model may itself consume a lot of time and effort.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a light-weight and rapid display method for 3D large-model web rendering.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
on one hand, the invention provides a light-weight rapid display method for 3D large-model web rendering, which comprises the following steps:
s1, acquiring transmission 3D model data of different building BIM model files, a 3D model theoretical calculation model and effects, time and priority of building rendering, wherein the transmission 3D model data of the model files can support reading of various model resource type library matching according to a server, carrying out resource matching and loading the model resource matching into a uniform and clean data structure;
s2, connecting a data compression algorithm to the BIM files of different buildings, acquiring current light-weight display data on a BIM file data separation receiving channel in unit time when compressed data is not sent to a BIM file 3D model data compression algorithm, using a Fast-query-Mesh-simple algorithm on a server, adopting a tetrahedral topological structure to represent triangle grids, rapidly calculating errors and weights of vertexes, reconstructing the grids, reserving the calculated vertexes and triangles, reducing 10 times of triangular faces based on a self-built C++ library, matching model data, and automatically dividing a three-dimensional model into different parts by an algorithm for a large model;
s3, reserving a complete new contour reconstruction model for the original model at a server end, and reconstructing model data according to the glb format requirement; determining the rendering effect of BIM model file data currently measured by a BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, the data separation information and the current light-weight display data; constructing a UV mapping technology at a server side, and performing texture and detail processing, baking and thumbnail exporting processing on the model; wherein, the server side adopts a Gzip compression model and a Draco compression model.
Preferably, the method for determining the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data, the data separation information and the current light-weight display data in unit time comprises the following specific steps:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as a rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, taking the light-weight display data in unit time as the rendering effect of the data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and then taking the data as the rendering effect of the data.
Preferably, after the step of determining the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data, the data separation information and the current light-weight display data in unit time, the method further includes:
s4, according to the rendering effect of the data and the BIM file data, separating the currently received data separation information correlation standard, determining the benefit of BIM file data currently measured by a BIM file 3D model data compression algorithm, transmitting the file to a distributed server by using a block transmission and data flow technology, and simultaneously returning a data address to store in a database;
s5, receiving a server-side model file by the APP, dynamically loading a large model, dynamically loading a corresponding three-dimensional model on a part to be displayed, and dynamically adjusting details and precision of the model by adopting a LOD technology based on a frame rate so as to maintain the rendering speed and quality and improve the frame rate and fluency of real-time rendering.
Preferably, the benefit of BIM model file data currently measured by the BIM model file 3D model data compression algorithm is determined according to the rendering effect of the data and the BIM model file data separation information correlation standard of the received data currently received, and the specific steps are as follows:
if the BIM file data separation current received data separation information related standard is smaller than the rendering effect of the data, the data abnormal lightweight display fails;
and if the BIM file data separation related standard of the received data separation information currently received is greater than or equal to the rendering effect of the data, the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is the rendering effect of the data subtracted from the received data separation information related standard.
Preferably, in step S2, when the data compression algorithm is connected to the different building BIM model files and compressed data is not sent to the 3D model data compression algorithm of the BIM model files, current light-weight display data on the data separation receiving channel of the BIM model files is obtained in unit time, and the specific steps are as follows:
and when the data compression algorithm is connected with different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, acquiring a plurality of light-weight display data received by BIM model file data separation in unit time, and alternately carrying out a Kalman filtering algorithm and a Gaussian filtering algorithm according to the plurality of light-weight display data to obtain the current light-weight display data on a BIM model file data separation receiving channel.
Preferably, the standard data redundancy elimination in the specific environment is changed according to the environments where different building BIM model files are located.
On the other hand, the invention provides a 3D large model web rendering lightweight rapid display system for implementing the display method, which comprises the following steps:
the BIM file data acquisition unit is used for acquiring the transmission 3D model data of different building BIM files, the 3D model theoretical calculation model and the effect, time and priority of the building when rendering;
the unit time light-weight display unit is used for connecting a data compression algorithm to the BIM model files of different buildings, and acquiring current light-weight display data on the BIM model file data separation receiving channel in unit time when compressed data is not sent to the BIM model file 3D model data compression algorithm;
and the optimal rendering effect determining unit is used for determining the rendering effect of BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data, the data separation information and the current light-weight display data in unit time.
Preferably, the best rendering effect determining unit is specifically configured to:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as a rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, taking the light-weight display data in unit time as the rendering effect of the data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and then taking the data as the rendering effect of the data.
Preferably, the system further comprises:
the current BIM file acquisition module is used for determining the benefit of BIM file data currently measured by the BIM file 3D model data compression algorithm according to the rendering effect of the data and the BIM file data separation information correlation standard of the received data currently received.
Preferably, the current BIM model file obtaining module is specifically configured to:
if the BIM file data separation current received data separation information related standard is smaller than the rendering effect of the data, the data abnormal light-weight display fails;
and if the BIM file data separation related standard of the received data separation information currently received is greater than or equal to the rendering effect of the data, the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is the rendering effect of the data subtracted from the received data separation information related standard.
The beneficial effects are that:
(1) According to the 3D large-model web rendering light-weight quick display method, effects, time and priority of different building BIM model files in transmission, 3D model theoretical calculation and building rendering are obtained, when a data compression algorithm is connected to the different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, current light-weight display data on a BIM model file data separation receiving channel is obtained in unit time, and the rendering effect of BIM model file data currently measured by the BIM model file 3D model data compression algorithm is determined according to the light-weight display data in unit time, data separation information and current light-weight display data; the method comprises the steps of determining the rendering effect of the currently measured BIM model file data by combining the inherent characteristics of different building BIM model files and current light-weight display data, updating the rendering effect of the data in unit time to timely reflect the current error interference condition, and further enabling the measurement result to be more accurate by eliminating the error interference after the measured BIM model files are obtained.
(2) The method and the device can rapidly process the BIM file data and send out the data, ensure that the BIM file data can be timely and accurately processed, filter errors in the processing process, and enable the judgment result of the BIM file data to be more accurate, so that a set of inspection light-weight display method is formed, and the method and the device can be applied to different building BIM files, thereby improving the efficiency of building file transmission and display.
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FIG. 1 is a flow chart of a lightweight fast display method for 3D large model web rendering of the present invention;
fig. 2 is a flowchart of an implementation method of a 3D large model web rendering lightweight fast exhibition method according to the present invention.
Detailed Description
It should be noted that, without conflict, the embodiments and features of the embodiments in the present application may be combined with each other, and the present application will be further described in detail with reference to the drawings and the specific embodiments.
Example 1
Referring to fig. 1, a 3D large model web rendering lightweight fast exhibition method includes the steps of:
s1, acquiring transmission 3D model data of different building BIM model files, a 3D model theoretical calculation model and effects, time and priority of building rendering, wherein the transmission 3D model data of the model files can support reading of various model resource type library matching according to a server, carrying out resource matching and loading the model resource matching into a uniform and clean data structure;
when different building BIM model files are not connected into a data compression algorithm, measuring the static error data separation information related standard of the BIM model file data separation circuit, namely transmitting 3D model data and a 3D model theoretical calculation model, and acquiring the data in a single-board radio frequency channel test in the production process. BIM model file 3D model data compression algorithm, specifically, wireless BIM model file 3D model data compression algorithm sends BIM model file data separation to different building BIM model files through wireless communication module after collecting BIM model file data, BIM model file data separation transmits BIM model file data to different building BIM model file's treater to carry out BIM model file data's receipt and processing, BIM model file data separated transmission 3D model data, 3D model theory calculation model reflect BIM model file data separation receiving path's inherent error, this inherent error can directly influence the benefit of different building BIM model file data that finally obtains.
BIM model file data separation is carried out after BIM model file data sent by a wireless BIM model file 3D model data compression algorithm is received, the BIM model file data is sent to processors of different building BIM model files, and the sent BIM model file data does not exceed the effect, time and priority of the building when the building is rendered, namely the most detailed BIM model file data separation information related standard.
S2, connecting a data compression algorithm to different building BIM model files, acquiring current light-weight display data on a BIM model file data separation receiving channel in unit time when compressed data is not sent to a BIM model file 3D model data compression algorithm, using a Fast-query-Mesh-simple algorithm on a server, adopting a tetrahedral topological structure to represent triangle grids, rapidly calculating errors and weights of vertexes, reconstructing the grids, reserving the calculated vertexes and triangles, reducing 10 times of triangular faces based on a self-built C++ library, matching model data, adopting an automatic segmentation method for a large model, and automatically segmenting the three-dimensional model into different parts through the algorithm;
the different building BIM model files also comprise data compression algorithms, the transmitters of the different building BIM model files and BIM model file data separation transmit and receive data through the data compression algorithms, when the data compression algorithms are accessed, the current environmental errors can be received by the BIM model file data separation through the data compression algorithms, and at the moment, the detection of the relevant standards of error data separation information on the BIM model file data separation receiving paths can reflect the environment interference conditions corresponding to the current environmental errors and the inherent errors of BIM model file data separation.
And acquiring a plurality of light-weight display data received by BIM model file data separation at the moment in unit time, storing the light-weight display data in a stack in a first-in first-out storage mode, and alternately performing a sliding window average algorithm or a (Gaussian weighted) Kalman filtering algorithm and a Gaussian filtering algorithm according to a plurality of closest light-weight display data to obtain the current light-weight display data of BIM model file data separation.
S3, reserving a complete new contour reconstruction model for the original model at a server end, and reconstructing model data according to the glb format requirement; determining the rendering effect of BIM model file data currently measured by a BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, the data separation information and the current light-weight display data; constructing a UV mapping technology at a server side, and performing texture and detail processing, baking and thumbnail exporting processing on the model; the server adopts a Gzip and a Draco compression model to ensure that the model maintains higher rendering quality and smaller size when in rendering;
when the BIM file detection method based on the wireless data compression algorithm works, the current light-weight display data after the BIM files of different buildings are accessed to the data compression algorithm can directly influence the BIM file data separation information related standard sampled by the wireless data compression algorithm finally acquired by the BIM files of different buildings, and the current light-weight display data needs to be removed so as to ensure the accuracy of BIM file data detection and improve the detection accuracy.
The current light-weight display data comprise inherent unit time errors of BIM model file data separation, so that in general cases, the current light-weight display data corresponding to the current light-weight display data after different building BIM model files are accessed into a data compression algorithm are larger than transmission 3D model data and a 3D model theoretical calculation model separated from BIM model file data.
Setting the rendering effect of the currently measured BIM file data, wherein the rendering effect of the data can reflect the error interference condition under the current working environment to a great extent, and determining the benefit of the BIM file data by taking the rendering effect of the data as a reference after the BIM file data acquired by the wireless BIM file 3D model data compression algorithm are acquired by different building BIM files.
Determining the rendering effect of BIM model file data currently measured by a BIM model file 3D model data compression algorithm according to the light-weight display data, the data separation information and the current light-weight display data in unit time; specifically, the rendering effect of the currently measured BIM model file data is determined by:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as the rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, the light-weight display data in unit time is used as the rendering effect of the data;
if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and removing the standard data redundancy to obtain a rendering effect of the data; the standard data redundancy elimination in this particular environment varies depending on the environment in which the different building BIM model files are located.
After the step of determining the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, the data separation information and the current light-weight display data, the method further comprises the following steps:
s4, according to the rendering effect of the data and the BIM file data, the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is determined by separating the received data separation information related standard, the file is transmitted to a distributed server by using a block transmission and data flow technology, and meanwhile, a data address is returned to store in a database;
s5, receiving a server-side model file by the APP, dynamically loading a large model, dynamically loading a corresponding three-dimensional model on a part to be displayed, and dynamically adjusting the details and the precision of the model by adopting an LOD technology based on a frame rate.
According to the method for quickly displaying the 3D large-model web rendering in the lightweight mode, the effect, time and priority of transmitting 3D model data, a 3D model theoretical calculation model and building rendering of different building BIM model files are obtained, when the data compression algorithm is connected with the different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, a plurality of lightweight display data received by BIM model file data separation are obtained in unit time, current lightweight display data are obtained according to the plurality of lightweight display data, and the rendering effect of BIM model file data currently measured by the BIM model file 3D model data compression algorithm is determined according to the lightweight display data in unit time, data separation information and the current lightweight display data; the method comprises the steps of combining inherent characteristics of BIM model files of different buildings with current light-weight display data on a BIM model file data separation receiving channel to determine the rendering effect of the current measured BIM model file data, updating the rendering effect of the data in unit time to timely reflect the current error interference condition, and determining relevant standards of the current measured BIM model file data separation information by taking the rendering effect of the data as a reference, so that the measured BIM model file is little interfered by environment, and the measurement result is accurate.
Example 2
Referring to fig. 2, the embodiment provides an implementation method of the light-weight rapid exhibition method for 3D large model web rendering in embodiment 1, which specifically includes the following steps:
step Q1: acquiring transmission 3D model data of different building BIM model files, a 3D model theoretical calculation model and effects, time and priorities of the building during rendering;
step Q2: when the data compression algorithm is connected with different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, acquiring a plurality of light-weight display data received by BIM model file data separation in unit time, and alternately carrying out a Kalman filtering algorithm and a Gaussian filtering algorithm according to the plurality of light-weight display data to acquire current light-weight display data on a BIM model file data separation receiving path;
step Q3: determining the rendering effect of BIM model file data by judging the sizes of the current light-weight display data, the light-weight display data in unit time and data separation information, wherein the specific mode is as follows:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as the rendering effect of BIM model file data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, the light-weight display data in unit time is used as the rendering effect of the BIM model file data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and removing the standard data redundancy to obtain the rendering effect of the BIM model file data.
The rationality of the current light-weight display data is judged through the effect, time and priority of BIM file data separation and transmission of the 3D model data, the 3D model theoretical calculation model and the building rendering, and the current light-weight display data on a BIM file data separation and reception path after different building BIM files are accessed into a data compression algorithm is larger than the 3D model data and the 3D model theoretical calculation model, so that the current light-weight display data is generally larger than the light-weight display data in unit time, but smaller than the effect, time and priority of BIM file data separation and the building rendering. When the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as the rendering effect of the data reflecting the current interference condition.
Step Q4: comparing BIM model file data separation current received relevant standard of received data separation information with the rendering effect of the data, and if the relevant standard of the received data separation information is more than or equal to the rendering effect of the data, entering a step Q5: if the received data separation information related standard is smaller than the rendering effect of the data, the step Q6 is entered.
Step Q5: BIM model File 3D model data compression algorithm the benefit of BIM model file data currently measured is the rendering effect of the received data separation information related standard minus the data.
After the BIM file data is obtained to separate the currently received relevant standard of the received data separation information, comparing the relevant standard with the rendering effect of the data reflecting the current error interference condition, and if the relevant standard of the received data separation information is more than or equal to the rendering effect of the data, taking the result of subtracting the rendering effect of the data from the relevant standard of the received data separation information as the benefit of BIM file data currently measured by a BIM file 3D model data compression algorithm.
Step Q6: data are abnormally light and failed to be displayed.
If the received data separation information related standard is smaller than the rendering effect of the data, namely the light-weight display data corresponding to the current error interference condition reflected by the rendering effect of the data is not achieved, the BIM model file data obtained through measurement at the time is abnormal, and the light-weight display fails.
According to the invention, the inherent characteristics of different building BIM model files and the current light-weight display data on the BIM model file data separation receiving path are combined to determine the rendering effect of the current measured BIM model file data, the rendering effect unit time of the data is updated to timely reflect the current error interference condition, the rendering effect of the data is taken as a reference to determine the relevant standard of the data separation information of the current measured BIM model file, the relevant standard of the BIM model file data separation information actually obtained by different building BIM model files is the relevant standard of the BIM model file data separation current received data separation information, and the rendering effect of the data is subtracted, so that the measured BIM model file is little interfered by the environment, and the measurement result is accurate.
Example 3
The present embodiment provides a 3D large model web rendering lightweight fast exhibition system implementing the exhibition method in the above embodiment 1, including:
the BIM file data acquisition unit is used for acquiring the transmission 3D model data of different building BIM files, the 3D model theoretical calculation model and the effect, time and priority of the building when rendering.
The unit time light display unit is used for connecting data compression algorithms to different building BIM model files and acquiring current light display data on a BIM model file data separation receiving channel in unit time when compressed data is not sent to the BIM model file 3D model data compression algorithm; the method comprises the following steps: and acquiring a plurality of light-weight display data received by BIM model file data separation in unit time, and alternately performing a Kalman filtering algorithm and a Gaussian filtering algorithm according to the plurality of light-weight display data to obtain the current light-weight display data on a BIM model file data separation receiving channel.
The optimal rendering effect determining unit is used for determining the rendering effect of BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data, the data separation information and the current light-weight display data in unit time.
The best rendering effect determining unit is specifically configured to:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as the rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, the light-weight display data in unit time is used as the rendering effect of the data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and removing the standard data redundancy to obtain the rendering effect of the data.
The above-mentioned 3D large model web rendering lightweight rapid exhibition system further includes:
the current BIM file acquisition module is used for separating the received data separation information related standard received currently according to the rendering effect of the data and BIM file data and determining the benefit of BIM file data currently measured by a BIM file 3D model data compression algorithm;
the current BIM model file obtaining module is specifically configured to:
if the BIM file data separation current received data separation information related standard is smaller than the rendering effect of the data, determining that the data is abnormal and lightweight and fails to be displayed;
if the BIM file data separation current received relevant data separation information standard is greater than or equal to the rendering effect of the data, determining that the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is the rendering effect of the data subtracted from the relevant received data separation information standard.
According to the invention, the intrinsic characteristics of different building BIM model files, including effects, time and priority when transmitting 3D model data, a 3D model theoretical calculation model and rendering a building, are combined, the rationality of the current light-weight display data on a BIM model file data separation receiving path is judged, when the current light-weight display data is positioned between the BIM model file data separation transmitting 3D model data, the 3D model theoretical calculation model and data separation information, the current light-weight display data is used as the rendering effect of the current measured BIM model file data, the rendering effect unit time of the data is updated to timely reflect the current error interference condition, the current measured BIM model file data separation information related standard is determined by taking the rendering effect of the data as a reference, the BIM model file data separation information related standard actually acquired by different building BIM model files is the rendering effect of the BIM model file data separation current received, namely, the current error interference is removed, so that the measured BIM model file is small in environmental interference, and the measurement result is accurate.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. A3D large-model web rendering lightweight rapid display method is characterized by comprising the following steps:
s1, acquiring transmission 3D model data of different building BIM model files, a 3D model theoretical calculation model and effects, time and priority of building rendering, wherein the transmission 3D model data of the model files can support reading of various model resource type library matching according to a server, carrying out resource matching and loading the model resource matching into a uniform and clean data structure;
s2, connecting a data compression algorithm to the BIM files of different buildings, acquiring current light-weight display data on a BIM file data separation receiving channel in unit time when compressed data is not sent to a BIM file 3D model data compression algorithm, using a Fast-query-Mesh-simple algorithm on a server, adopting a tetrahedral topological structure to represent triangle grids, rapidly calculating errors and weights of vertexes, reconstructing the grids, reserving the calculated vertexes and triangles, reducing 10 times of triangular faces based on a self-built C++ library, matching model data, and automatically dividing a three-dimensional model into different parts by an algorithm for a large model;
s3, reserving a complete new contour reconstruction model for the original model at a server end, and reconstructing model data according to the glb format requirement; determining the rendering effect of BIM model file data currently measured by a BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, the data separation information and the current light-weight display data; constructing a UV mapping technology at a server side, and performing texture and detail processing, baking and thumbnail exporting processing on the model; wherein, the server side adopts a Gzip compression model and a Draco compression model.
2. The display method according to claim 1, wherein in step S3, the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm is determined according to the light-weight display data, the data separation information and the current light-weight display data in unit time, specifically:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, taking the current light-weight display data as a rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, taking the light-weight display data in unit time as the rendering effect of the data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and then removing the standard data redundancy to obtain the rendering effect of the data.
3. The presentation method according to claim 1, wherein after the step of determining the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weighted presentation data, the data separation information, and the current light-weighted presentation data, further comprises:
s4, according to the rendering effect of the data and the BIM file data, the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is determined by separating the received data separation information related standard, the file is transmitted to a distributed server by using a block transmission and data flow technology, and meanwhile, a data address is returned to store in a database;
s5, receiving a server-side model file by the APP, dynamically loading a large model, dynamically loading a corresponding three-dimensional model on a part to be displayed, and dynamically adjusting the details and the precision of the model by adopting an LOD technology based on a frame rate.
4. The display method according to claim 3, wherein the benefit of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm is determined according to the rendering effect of the data and the related standard of the received data separation information of the BIM model file data separation, and the specific steps are as follows:
if the BIM file data separation current received data separation information related standard is smaller than the rendering effect of the data, the data abnormal lightweight display fails;
and if the BIM file data separation related standard of the received data separation information currently received is greater than or equal to the rendering effect of the data, the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm is the rendering effect of the data subtracted from the received data separation information related standard.
5. The display method according to claim 1, wherein in step S2, when the data compression algorithm is applied to the different building BIM model files and compressed data is not sent to the 3D model data compression algorithm of the BIM model files, the current light-weight display data on the BIM model file data separation receiving channel is obtained in unit time, which specifically comprises the steps of:
and when the data compression algorithm is connected with different building BIM model files and compressed data is not sent to the BIM model file 3D model data compression algorithm, acquiring a plurality of light-weight display data received by BIM model file data separation in unit time, and alternately carrying out a Kalman filtering algorithm and a Gaussian filtering algorithm according to the plurality of light-weight display data to obtain the current light-weight display data on a BIM model file data separation receiving channel.
6. The method of claim 2, wherein the standard data redundancy culling in a specific environment varies depending on the environment in which the different building BIM model files are located.
7. A 3D large model web rendering lightweight fast presentation system, comprising:
the BIM file data acquisition unit is used for acquiring the transmission 3D model data of different building BIM files, the 3D model theoretical calculation model and the effect, time and priority of the building when rendering;
the unit time light-weight display unit is used for connecting data compression algorithms to different building BIM model files, and acquiring current light-weight display data on a BIM model file data separation receiving channel in unit time when compressed data is not sent to the BIM model file 3D model data compression algorithm;
the optimal rendering effect determining unit is used for determining the rendering effect of the BIM model file data currently measured by the BIM model file 3D model data compression algorithm according to the light-weight display data in unit time, the data separation information and the current light-weight display data.
8. The display system according to claim 7, wherein the best rendering effect determining unit is specifically configured to:
if the current light-weight display data is located between the light-weight display data and the data separation information in unit time, the current light-weight display data is used as a rendering effect of the data;
if the current light-weight display data is smaller than or equal to the light-weight display data in unit time, taking the light-weight display data in unit time as the rendering effect of the data;
and if the current light-weight display data is greater than or equal to the data separation information, subtracting the standard data redundancy under the specific environment from the data separation information, and then removing the standard data redundancy to obtain the rendering effect of the data.
9. The display system of claim 8, wherein the system further comprises:
the current BIM file acquisition module is used for determining the benefit of BIM file data currently measured by the BIM file 3D model data compression algorithm according to the rendering effect of the data and the BIM file data separation information correlation standard of the received data currently received.
10. The display system according to claim 9, wherein the current BIM model file obtaining module is specifically configured to:
if the BIM file data separation current received data separation information related standard is smaller than the rendering effect of the data, determining that the data is abnormal and lightweight and fails to be displayed;
and if the BIM file data separation related standard of the received data separation information currently received is greater than or equal to the rendering effect of the data, determining the benefit of the BIM file data currently measured by the BIM file 3D model data compression algorithm as the rendering effect of the received data separation information related standard minus the data.
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