CN117315111A - Large-scale building rendering processing method, system and storage medium - Google Patents
Large-scale building rendering processing method, system and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of graphic rendering, in particular to a large-scale building rendering processing method, a large-scale building rendering processing system and a storage medium, wherein the method comprises the following steps of S1, establishing a basic site model comprising topography, roads and house buildings in a set area based on basic site data resources; s2, after the foundation site model is established, adding textures and colors to the foundation site model; s3, importing an environment greening model and a traffic object model; s4, performing real-time rendering of different levels according to scene requirements and outputting rendering animation. The invention can solve the problems of blocking and high resource consumption in large-scale building rendering processing and ensure smooth interaction experience in rendering.
Description
Technical Field
The invention relates to the technical field of graphic rendering, in particular to a large-scale building rendering processing method, a large-scale building rendering processing system and a storage medium.
Background
In urban civilization construction, traffic is one of the symbols that best represents urban vitality. When the traffic of one city is convenient, the traffic tool is advanced, and great convenience is brought to the given line. Traffic serves as a large artery for urban operation, and plays a role in urban construction. The internet of vehicles is an interactive wireless network constructed according to information such as vehicle position, speed, route and the like. The acquisition of the environment and state information of the vehicle can be completed by means of devices such as GPS, RFID, sensors, camera image processing and the like and depending on the Internet of vehicles. Through the Internet and computer technology, the information is analyzed and processed, the optimal routes of different vehicles are calculated, road conditions, weather are reported in time, the period of the signal lamp is arranged, and the like, so that the organic interaction of automobiles, roads and people is realized, and the intellectualization of vehicles and traffic is realized.
At present, the visualization of the Internet of vehicles jointly uses a three-dimensional building model of a city, so that the combination of vehicle data and three-dimensional GIS space data is realized, not only can each item of index information and the position of the vehicle be monitored in real time, but also real-time alarm can be carried out on sudden faults, and the comprehensive and refined vehicle safety management is realized by improving the dimension of the data, so that the vehicle driving safety level is greatly improved. In order to improve the visual effect, the three-dimensional building model of the internet of vehicles needs image rendering when in use, and the image rendering is a process of converting three-dimensional light energy transmission processing into a two-dimensional image. In the rendering process, the computer needs to process the three-dimensional model or scene, including modeling, texture, mapping, illumination calculation, projection transformation, viewpoint transformation, and the like, and finally generates a realistic image, which is closer to the real world.
Currently, when performing extensive building rendering, it is common to render effect maps of the whole graphic, but this process involves a large number of computing and graphics processing techniques, such as ray tracing, shadow computing, reflection and refraction, due to the excessive number of buildings that need to be rendered. Therefore, the problems of blocking, high resource consumption and the like exist, and smooth interaction experience during rendering is difficult to ensure.
There is a need for a wide range of building rendering treatments to address the above problems.
Disclosure of Invention
One of the purposes of the invention is to provide a large-scale building rendering processing method, which solves the problems of blocking and high resource consumption during large-scale building rendering processing and ensures smooth interaction experience during rendering.
In order to achieve the above object, a method for rendering a large-scale building is provided, comprising the steps of:
s1, establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources;
s2, after the foundation site model is established, adding textures and colors to the foundation site model;
s3, importing an environment greening model and a traffic object model;
s4, carrying out real-time rendering of different grades according to scene requirements and outputting rendering animation; when rendering in real time, adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, roads and house buildings, green plants in an environment greening model and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; controlling the number of top points and the number of triangular faces of each model, and reducing the time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
Further, the method also comprises the following steps:
and (3) simulating the atmospheric environment: simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
Further, the method also comprises the following steps:
and (3) simulating the atmospheric environment: simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
Further, the method also comprises the following steps:
and (3) simulating ambient light: the dynamic illumination technology is used for simulating illumination change of solar rays in 24 hours, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; and (3) carrying out multiple calculations on the light receiving surface, the backlight surface and indirect light reflection by using a global illumination GI technology, and adding a natural lighting effect for the 3D scene.
Further, the method also comprises the following steps:
weather effect simulation: prefabricating different weather effects, switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters, and according to the weather dynamic data: cloud layer height, wind direction, edge noise wave size and the like, and simulating real weather effects.
Another object of the present invention is to provide a large-scale building rendering processing system, comprising:
a basic site model building module: the method comprises the steps of establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources;
texture and color adding module: for adding texture and color to the base site model after the base site model is established;
an environmental greening and traffic object model importing module: the method is used for importing an environment greening model and a traffic object model;
and a post-rendering module: the system is used for carrying out real-time rendering of different levels according to scene requirements and outputting rendering animation; when rendering in real time, adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, roads and house buildings, green plants in an environment greening model and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; controlling the number of top points and the number of triangular faces of each model, and reducing the time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
Further, the method also comprises the following modules:
atmospheric environment simulation module: the method is used for simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
Further, the method also comprises the following modules:
an ambient light simulation module: the method is used for simulating the illumination change of the solar rays in 24 hours by using a dynamic illumination technology, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; and (3) carrying out multiple calculations on the light receiving surface, the backlight surface and indirect light reflection by using a global illumination GI technology, and adding a natural lighting effect for the 3D scene.
Further, the method also comprises the following modules:
weather effect simulation module: the method is used for prefabricating different weather effects and switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters and according to the weather dynamic data: cloud layer height, wind direction, edge noise wave size and the like, and simulating real weather effects.
It is a further object of the present invention to provide a computer-readable storage medium having a wide range of building rendering processing program embodied therein, which when executed by a processor, implements the steps of the wide range of building rendering processing method as described above.
Principle and advantage:
when rendering in real time, the rendering objects in the scene are greatly reduced by adopting view cone rejection and shielding rejection, so that the problems of blocking, resource consumption and the like existing in large-scale building rendering can be solved to a certain extent. And then, dynamically switching the detail level of the model by using an LOD technology, reducing the detail of the model when the viewpoint is far, retaining all the detail of the model when the viewpoint is near, improving the fidelity, and ensuring the viewing experience and the rendering efficiency. And then the basic field model is dynamically loaded in blocks with different accuracies, a low-accuracy model is used for a long-distance land block, a high-accuracy model is used for a short-distance land block, a quadtree algorithm is adopted for dynamic scheduling according to the field of view range, the problems of blocking, resource consumption and the like are solved, and the viewing experience and the rendering efficiency are ensured. Finally, the number of top points and the number of triangular faces of each model are strictly controlled, and the time consumption of transmission and loading is reduced by adopting a compression algorithm for the mapping; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced. The problems of blocking, resource consumption and the like existing in large-scale building rendering are solved.
Drawings
FIG. 1 is a block flow diagram of a method for large-scale building rendering processing according to an embodiment of the present invention.
Detailed Description
The following is a further detailed description of the embodiments:
example 1
The large-scale building rendering processing method is mainly applied to a traffic control center, basically as shown in fig. 1, and comprises the following steps:
s1, establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources; base map modeling (fine), key demonstration area node modeling, such as crossroads and the like. Node affiliated facilities modeling such as crossroads, important facilities, etc. And modeling important nodes in the range with high precision, including crossroads, tunnels, overpasses, upper/lower crossing roads and the like. Prior to 3D modeling design we need to determine the topography and the appearance and shape of the road. This step requires the use of specialized modeling software, such as AutoCAD, solidWorks, etc., to design and modify as needed until satisfied.
In the modeling process, attention needs to be paid to factors such as relief of topography, width of a road, traffic flow and the like, and the details can increase the reality and the credibility of the model.
S2, after the foundation site model is established, adding textures, colors, materials, pictures and the like to the foundation site model; this step needs to be implemented using texture mapping and shaders to make the model look more realistic and vivid. Texture mapping is a technique for attaching images to the surface of a three-dimensional model, which can make the model look finer and more realistic. A shader is a program used to render a model, which can make the model exhibit more diverse colors and effects.
S3, importing an environment greening model and a traffic object model; details of the surrounding environment, such as buildings, trees, flowers and plants, etc., are considered. These details can increase the realism and credibility of the model. Including vehicles (of different vehicle types), trucks, carts, buses, non-motor vehicles, and special vehicle identification, police, fire, ambulances. The system comprises models of pedestrians, RSU, MEC, radar, cameras, signal lamp rods and the like.
S4, carrying out real-time rendering of different grades according to scene requirements and outputting rendering animation; after importing the environment and object models, rendering and post-processing are required. This step requires the use of specialized rendering software, which is adjusted and processed as needed until the desired effect is achieved. Rendering is a process of converting a three-dimensional model into an image, and requires simulation and processing of light, color, texture, and other factors. The post-processing is the process of processing and adjusting the rendered image, so that the realism and the credibility of the image can be increased. The scene requirements comprise tourist sightseeing, client sightseeing, actual use and the like, the tourist sightseeing is in a high-requirement state, the rendering image quality is a main target, and the quick rendering degree is a secondary target. In actual use, the speed rendering degree is a main target, and the rendering image quality is a secondary target.
When rendering in real time, mapping and rendering are carried out on all the modeled basic monomer elements, and materials, textures and the like are added, so that simulation reduction is achieved. And (3) carrying out fine rendering treatment on a specific building, and recovering details such as building outlines, colors, light shadows and the like. Adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, green plants in an environment greening model of roads and house buildings and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; simultaneously controlling the number of top points and the number of triangular faces of each model, and reducing time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
In order to improve the more realistic scene effect of the scene, the method further comprises the following steps:
and (3) simulating the atmospheric environment: simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
And (3) simulating ambient light: the dynamic illumination technology is used for simulating illumination change of solar rays in 24 hours, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; through global illumination GI technology, the light receiving surface, the backlight surface and indirect light reflection are calculated for a plurality of times, and more realistic natural lighting effect is added for the 3D scene.
Weather effect simulation: prefabricating different weather effects, switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters, and according to the weather dynamic data: cloud deck height, wind direction, edge noise wave size, etc., simulate various real weather effects.
In order to improve the more realistic scene effect of the scene, a specific scene effect can be formed in a specific scene according to a certain motion rule on the manufactured model, for example, after the motion tracks of pedestrians and vehicles are overlapped, the motion collision of the pedestrian model and the vehicle model can be manufactured into a pedestrian collision scene, and the high-brightness early-warning special effect is added, so that the pedestrian collision early-warning scene effect can be formed.
According to the scheme, through development of various functions of an engine of the UE4, a vivid, fast and portable three-dimensional visual scene is constructed, and a system framework based on Web three-dimensional visualization of the UE4 is designed by combining the characteristics of the Web three-dimensional visualization.
Three-dimensional scene is based on professional 3D engine, from macroscopic to microcosmic, makes the rendering of different grades and requirements according to scene and parameter difference, renders in real time and presents the picture that is shocked and dazzled cool, reaches shocking visual effect. The rendering display end provides standardized three-dimensional interactive operation, a user can freely perform three-dimensional zooming, rotating and translating interactive operation, the viewing angle can be rapidly switched to achieve the optimal display effect, and the rendering display end responds to data and events configured by the visual design module, comprises display and click interaction of element data such as loaded equipment, vehicles and RSU, and can be simultaneously overlapped with other data sources for display, and region thermodynamic diagrams and the like can be formed by overlapping base map and vehicle data.
A wide-area building rendering processing system comprising a server comprising the following modules:
a basic site model building module: the method comprises the steps of establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources;
texture and color adding module: for adding texture and color to the base site model after the base site model is established;
an environmental greening and traffic object model importing module: the method is used for importing an environment greening model and a traffic object model;
and a post-rendering module: the system is used for carrying out real-time rendering of different levels according to scene requirements and outputting rendering animation; when rendering in real time, adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, roads and house buildings, green plants in an environment greening model and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; controlling the number of top points and the number of triangular faces of each model, and reducing the time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
Atmospheric environment simulation module: the method is used for simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
An ambient light simulation module: the method is used for simulating the illumination change of the solar rays in 24 hours by using a dynamic illumination technology, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; through global illumination GI technology, the light receiving surface, the backlight surface and indirect light reflection are calculated for a plurality of times, and more realistic natural lighting effect is added for the 3D scene.
Weather effect simulation module: the method is used for prefabricating different weather effects and switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters and according to the weather dynamic data: cloud deck height, wind direction, edge noise wave size, etc., simulate various real weather effects.
A computer readable storage medium having a wide range of building rendering processing programs embodied therein, which when executed by a processor, implement the steps of a wide range of building rendering processing method as described above.
Those skilled in the art will appreciate that implementing all or part of the above-described process of performing a wide range of building rendering processes may be accomplished by computer programs stored on a non-volatile computer readable storage medium, which when executed, may include processes such as those described above for various embodiments of the wide range of building rendering processes. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), memory bus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
Example two
The first embodiment of the present invention is different from the second embodiment in that the large-scale building model animation rendered by the large-scale building rendering method can be applied to a vehicle in combination with the internet of vehicles technology, so as to realize three-dimensional map navigation, so that a vehicle driver can know the road condition. The method specifically comprises the following steps:
a demand acquisition step: acquiring demand information of a vehicle, such as three-dimensional map navigation; the driver of the vehicle sends the information through the Internet or the information to a control center through the vehicle; simultaneously sending parameter information of the display equipment;
the three-dimensional map navigation analysis and transmission step: according to the demand information of the vehicle, the vehicle is accurately positioned by the vehicle networking technology, the vehicle position is used as a rendered camera point, a traffic control center renders a large-range building model animation according to a large-range building rendering processing method, and then the large-range building model animation is sent to the vehicle through a 5g communication technology and displayed through display equipment on the vehicle. And when the emperor view angle and the rotation view angle are needed, the requirement is retransmitted, and then the large-scale building model animation is transmitted to the vehicle through a 5g communication technology, and is displayed by display equipment on the vehicle so as to realize three-dimensional map navigation. Meanwhile, the accuracy of the far and near model is dynamically adjusted according to the configuration of the parameter information of the vehicle display equipment.
The foregoing is merely an embodiment of the present invention, and general knowledge of specific structures and features well known in schemes is not described in any way herein, so that a person of ordinary skill in the art would know all of the prior art to which the present invention pertains before the application date or priority date, and would be able to learn all of the prior art in this field, and have the ability to apply conventional experimental means before this date, so that a person of ordinary skill in the art could complete and implement this scheme in combination with his own capabilities, given the benefit of this application, and some typical known structures or known methods should not be an obstacle to the implementation of this application by those of ordinary skill in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (9)
1. The large-scale building rendering processing method is characterized by comprising the following steps of:
s1, establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources;
s2, after the foundation site model is established, adding textures and colors to the foundation site model;
s3, importing an environment greening model and a traffic object model;
s4, carrying out real-time rendering of different grades according to scene requirements and outputting rendering animation; when rendering in real time, adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, roads and house buildings, green plants in an environment greening model and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; controlling the number of top points and the number of triangular faces of each model, and reducing the time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
2. The wide-range building rendering processing method according to claim 1, wherein: the method also comprises the following steps:
and (3) simulating the atmospheric environment: simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
3. The wide-range building rendering processing method according to claim 2, wherein: the method also comprises the following steps:
and (3) simulating ambient light: the dynamic illumination technology is used for simulating illumination change of solar rays in 24 hours, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; and (3) carrying out multiple calculations on the light receiving surface, the backlight surface and indirect light reflection by using a global illumination GI technology, and adding a natural lighting effect for the 3D scene.
4. A wide-range building rendering processing method according to claim 3, wherein: the method also comprises the following steps:
weather effect simulation: prefabricating different weather effects, switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters, and according to the weather dynamic data: cloud layer height, wind direction, edge noise wave size and the like, and simulating real weather effects.
5. The large-scale building rendering processing system is characterized by comprising the following modules:
a basic site model building module: the method comprises the steps of establishing a basic site model comprising terrain, roads and house buildings in a set area based on basic site data resources;
texture and color adding module: for adding texture and color to the base site model after the base site model is established;
an environmental greening and traffic object model importing module: the method is used for importing an environment greening model and a traffic object model;
and a post-rendering module: the system is used for carrying out real-time rendering of different levels according to scene requirements and outputting rendering animation; when rendering in real time, adopting view cone elimination and shielding elimination to greatly reduce rendering objects in a scene, wherein the rendering objects comprise the topography of a basic site model, roads and house buildings, green plants in an environment greening model and traffic props in a traffic object model; dynamically switching the detail level of the model by using an LOD technology, and reducing the detail of the model when the viewpoint is far; the basic field model is dynamically loaded in blocks with different precision, a remote field block uses a low-precision model, a close field block uses a high-precision model, and a quadtree algorithm is adopted to dynamically schedule according to the field range; controlling the number of top points and the number of triangular faces of each model, and reducing the time consumption of transmission and loading for the map by adopting a compression algorithm; static grid bodies and batch processing technology are used, and batch and waiting time for GPU data transmission is reduced.
6. The wide-area building rendering processing system of claim 5, wherein: the device also comprises the following modules:
atmospheric environment simulation module: the method is used for simulating a real atmospheric environment; building an atmospheric fog system in the whole environment according to meteorological rules, simulating the atmospheric environmental effect in a digital twin scene, and adjusting particle parameters to ensure that illumination reflection accords with physical rules; the real atmospheric environment is simulated by adjusting the atmospheric height, multiple scattering, rayleigh scattering, mie scattering, atmospheric absorption and solar halation, and the real atmospheric environment is dynamically adjusted according to the requirement.
7. The wide-area building rendering processing system of claim 6, wherein: the device also comprises the following modules:
an ambient light simulation module: the method is used for simulating the illumination change of the solar rays in 24 hours by using a dynamic illumination technology, so that the illumination change in different time periods accords with physical reality; through a cascading shadow mode, fine shadow calculation is carried out in a closer view point range, so that illumination shadows are clearer; and (3) carrying out multiple calculations on the light receiving surface, the backlight surface and indirect light reflection by using a global illumination GI technology, and adding a natural lighting effect for the 3D scene.
8. The wide-area building rendering processing system of claim 7, wherein: the device also comprises the following modules:
weather effect simulation module: the method is used for prefabricating different weather effects and switching, synchronously accessing real-time dynamic data, reflecting weather change conditions of project areas, matching the change of corresponding weather effect parameters and according to the weather dynamic data: cloud layer height, wind direction, edge noise wave size and the like, and simulating real weather effects.
9. A computer-readable storage medium, characterized by: included in the computer readable storage medium is a wide-area building rendering process program which, when executed by a processor, implements the steps of the wide-area building rendering process method of any one of claims 1 to 4.
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