CN102279752A - Device and method for rendering ultra-large scene in real time based on Web three-dimension (3D) - Google Patents
Device and method for rendering ultra-large scene in real time based on Web three-dimension (3D) Download PDFInfo
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Abstract
The invention discloses a device for rendering an ultra-large scene in real time and relates to a device and a method for transmitting and loading data. The device comprises a data transmission part and a data rendering part, wherein the data transmission part comprises a structural conversion device, a serialization device and a server thread management device; and the data rendering part comprises a client data loading device and a dynamic display management device. By the device, a user no longer needs to wait for a long time during the accessing of a Web 3D application program, and the 3D application program cannot be seriously limited by network bandwidth during propagation on web; during the deployment and embodiment of the Web 3D application program, the incompatibility of early terminals, having lower hardware configuration, of a user group can be ignored, and the feasibility and practicability of the Web 3D application program are greatly improved. Meanwhile, the invention provides a method for rendering by using the device.
Description
Technical field
The present invention relates to data transmission charger and method, the ultra-large scene data in real time that particularly relates to based on Web3D loads the apparatus and method of playing up.
Background technology
As is known, in today of internet fast development, 3D graph technology (Web3D) on the internet reaches its maturity, and has a extensive future in fields such as visual, the education of ecommerce, online amusement and leisure and recreation, science and technology and engineering, medical science, geography information, virtual communities.But in actual applications, the Web3D application development based on B/S pattern (being browser and service end framework) exists two fatefulue factors, i.e. the real-time rendering speed of the network bandwidth and subscription client.
The user will visit, use a Web3D application program, the bottom graphic interface that client-side program need call the local operation system is finished three-dimensional picture and is played up, if each use needs all to wait for that a few minutes even the time more than tens minutes are waited for by network that three-dimensional data is downloaded to this locality from server end, and after having verified data integrity, begin to play up, this application program is destined to lose the user group so.Along with the fast development of cable and Fibre Optical Communication Technology, though having significantly, the network bandwidth promotes, for the three-dimensional data of the above ultra-large scene of file volume 100MB, transmission bandwidth is still the main bottleneck of restriction development.
The use of three-dimensional applications on user terminal, (OpenGL and Direct3D are the graphical programming interfaces of specialty to the Direct3D of client support OpenGL or Microsoft, maximum difference is that Direct3D is that Windows system of Microsoft is exclusive, and OpenGL strides author language, interdepartmental system platform) be the key that realizes, Web3D and PC 3D are as broad as long in this, and the operational efficiency of OpenGL or Direct3D directly depends on the level of hardware of user terminal, different user terminals exists high-end and the problem low side hardware configuration, be applied in smooth operation on the very different user terminal of magnanimity so want to satisfy the Web3D of BS pattern, outstanding real-time rendering technology is very crucial.
The application of Web3D and Host Based 3D application class seemingly, the institutional framework of data also is according to getting in touch progressively refinement between scene, element, object, attribute and object, comprise each dvielement in the scene, the characteristic of element defines the method that can finish; The object definition that belongs to same dvielement attribute has different three-dimensional properties, comprises attributes such as position, shape, color, outward appearance; Each object also comprise and other objects between annexation, comprise the mutual motion state of object, triggering state, the characteristic relation between the inferior object of associated layers.
Summary of the invention
At above defective, the present invention seeks to use into the ultra-large scene of Web3D, a kind of real-time rendering device is provided, solve the technical matters of the less incompatibility real-time rendering of transmission bandwidth high request.
The object of the invention provides a kind of method of utilizing this real-time rendering device, solves the slow-footed problem of playing up.
Ultra-large scene real-time rendering device of the present invention comprises that tcp data segment and data play up part, tcp data segment comprises the Structure Conversion device, serializing device, service end thread management device, data are played up part and are comprised the client data charger, dynamically the display management device;
The Structure Conversion device according to the request of client to scenario objects, is converted to the JSON structure with the encapsulating structure of model of place response data;
The serializing device is used for model and element object instantiation with the response data scene, and the object of instantiation is converted to independent data stream;
Service end thread management device is used for giving different threads with distribution of flows, realizes the concurrent transmission of each element object in the model of place;
The client data charger is used for the element object of model of place is loaded in real time in client, realizes that concurrent transmission of data and situation elements loading procedure are synchronous;
Dynamically the display management device is used to finish the client real-time rendering, regulates the client resource;
Wherein: the Structure Conversion device comprises the content compression device, is used for getting rid of the data and the irrelevant XML information data and the redundant data of contextual data of JSON construction packages, comprises newline, space character, and tab is used for the header file structure of platform compatibility;
Service end thread management device comprises the priority management device, is used for the situation elements object of response data is classified, and according to the needs of restoration scenario priority is set;
Dynamically the display management device comprises the resource monitoring device, is used for the utilization factor of surveillance internal memory or video memory, for the optimization system resource provides trigger condition.
The client data charger also comprises the unserializing device, data extract device, data loading device;
The unserializing device is used for data stream is converted to the data of JSON construction packages, for the data stream of convert failed, sends serializing request again to the serializing device;
The data extract device is used for extracting situation elements and object according to client-requested from the contextual data of JSON encapsulating structure;
Data loading device is used for real-time loading scenario element and object to OpenGL or Direct3D, finishes playing up of each object.
Service end thread management device also comprises the thread distributor, is used for according to client-requested priority the data stream of serializing being passed to different threads and handles, and realizes that data parallel transmits.
Dynamically the display management device also comprises scene level of detail management devices, and according to the control signal of resource monitoring device, the visual field or the sighting distance of control camera element are adjusted leg-of-mutton rendering effect and the pinup picture resolution of forming object in the scene.
Dynamically the display management device also comprises situation elements load/unload device, according to the control signal of resource monitoring device, and the visual field or the situation elements in the sighting distance and the object of load or unload camera element from internal memory and video memory in real time.
Based on the rendering intent of ultra-large scene real-time rendering device of the present invention, its step comprises:
The user proposes the Web3D application request;
The structure converter device is converted to the JSON structure with the encapsulating structure of service end model of place data;
Utilize the content compression device to get rid of and the irrelevant redundant data of contextual data;
With the element object instantiation in the model of place, the object of instantiation is converted to independent data stream by the serializing device;
By the priority management device, the situation elements object is classified, according to the needs of restoration scenario priority is set;
The data stream of serializing is passed to the different threads processing by the thread distributor, realize that data parallel transmits;
A, client are converted to the data of JSON construction packages with the serializing data stream that different threads transmits by the unserializing device;
B, from the JSON structure, extract situation elements by the data extract device;
C, the real-time loading scenario element of data loading device;
Repeat a to c step, dynamically improve scene content.
Step also comprises:
Monitor client internal memory, the dynamic utilization factor of video memory by the resource monitoring device;
When system availability reaches trigger condition, reduce the rendering effect of triangular element or pass through the visual field of situation elements load/unload device unloading camera element or the less important situation elements in the sighting distance by scene level of detail management devices;
When system loading is light, improves the rendering effect of triangular element or load the visual field of camera element or the less important situation elements in the sighting distance by situation elements load/unload device by scene level of detail management devices.
By the ultra-large scene real-time rendering device based on Web3D of the present invention, when using the Web3D application program, user capture needn't break through tri-dimensional application program and propagate the serious restriction that is subjected to the network bandwidth in the internet again through the long stand-by period; When disposing and implementing the Web3D application, needn't worry user group's the lower terminal incompatibility of early stage hardware configuration, promote the feasibility and the practicality of Web3D application program greatly.
The invention will be further described below in conjunction with specific embodiment.
Description of drawings
Fig. 1 is the structural representation of ultra-large scene real-time rendering device of the present invention;
Fig. 2 is the service end Data Control schematic flow diagram of ultra-large scene real-time rendering device of the present invention;
Fig. 3 is the client data control schematic flow diagram of ultra-large scene real-time rendering device of the present invention.
Embodiment
As shown in Figure 1, ultra-large scene real-time rendering device based on Web3D of the present invention comprises that tcp data segment and data play up part, tcp data segment comprises Structure Conversion device 01, serializing device 02, service end thread management device 03, data are played up part and are comprised client data charger 04, dynamically display management device 05;
Structure Conversion device 01 according to the request of client to scenario objects, is converted to the JSON structure with the encapsulating structure of model of place response data;
Serializing device 02 is used for model and element object instantiation with the response data scene, and the object of instantiation is converted to independent data stream;
Service end thread management device 03 is used for giving different threads with distribution of flows, realizes the concurrent transmission of each element object in the model of place;
Client data charger 04 is used for the element object of model of place is loaded in real time in client, realizes that concurrent transmission of data and situation elements loading procedure are synchronous;
Dynamically display management device 05 is used to finish the client real-time rendering, regulates the client resource.
Structure Conversion device 01 comprises content compression device 011,
Content compression device 011 is used for getting rid of the data of JSON construction packages and XML information data and the redundant data that contextual data has nothing to do, and comprises newline, space character, and tab is used for the header file structure of platform compatibility etc.
Service end thread management device 03 comprises priority management device 031, thread distributor 032;
Priority management device 031 is used for the situation elements object of response data is classified, and according to the needs of restoration scenario priority is set;
Thread distributor 032 is used for according to client-requested priority the data stream of serializing being passed to different threads and handles, and realizes that data parallel transmits.
Client data charger 04 comprises unserializing device 041, data extract device 042, data loading device 043;
Unserializing device 041 is used for data stream is converted to the data of JSON construction packages, for the data stream of convert failed, sends serializing request again to serializing device 02;
Data extract device 042 is used for extracting situation elements and object according to client-requested from the contextual data of JSON encapsulating structure;
Data loading device 043 is used for real-time loading scenario element and object to OpenGL or Direct3D, finishes playing up of each object.
Dynamically display management device 05 comprises scene level of detail management devices 052, situation elements load/unload device 053, resource monitoring device 051;
Scene level of detail management devices 052 is adjusted leg-of-mutton rendering effect and the pinup picture resolution of forming object in the scene according to the visual field or the sighting distance of camera element;
Situation elements load/unload device 053, the visual field or the situation elements in the sighting distance and the object of load or unload camera element from internal memory and video memory in real time;
Resource monitoring device 051 is used for the utilization factor of surveillance internal memory or video memory, for the optimization system resource provides trigger condition, for scene level of detail management devices 052 and situation elements load/unload device 053 provide the adjusting parameter.
In the application, Structure Conversion device 01 customer in response end is to the request of element in the scene and object, to generate the JSON encapsulation format of lightweight more with the situation elements data and the object data mapping of the request of XML form encapsulation, by content compression device 011, XML information filtering in the JSON encapsulation format data is fallen, and get rid of redundant information such as space character, carriage return character, control character and platform compatible information header file that tab and other and contextual data have nothing to do.JSON (JavaScript Object Notation) is based on the subclass of JavaScript (Standard ECMA-262 3rd Edition-December 1999), employing is totally independent of the text formatting of language,, make that JSON is the same with XML to become desirable exchanges data language.JSON to as if unordered " ' name/value ' a to " set.An object finishes with " { " (left parenthesis) beginning, " } " (right parenthesis).": " (colon) of each " title " heel; Use ", " (comma) to separate between " ' name/value ' to "; Array is the ordered set of value (value), and an array finishes with " [" (left bracket) beginning, "] " (right bracket), uses ", " (comma) to separate between the value; Value (value) can be character string (string), numerical value (number), ture, false, null, object (object) or the array (array) that double quotation marks brackets, and these structures can be nested; Character string (string) is by the set of any amount Unicode character of double quotation marks encirclement, uses the backslash escape, and a character (character) i.e. is an independent character string (character string).The JSON structure makes packed data just can be used through simple conversion in different development environments, has alleviated the loading level of exchanges data, has promoted the data utilization ratio.After three-dimensional data was handled through the compression of above two steps, the volume of element and object can be reduced to 1 ‰～1% of original, is useful in very much transmission over networks.
The quantity that priority management device 031 is pressed element or object with the request of data of client, the complexity and the annexation between object of model are labeled as different priority levels.Serializing device 02 according to priority level, carries out serializing to the model in the JSON data, element or object, with the situation elements object-instantiated of client demand, and instance object is converted to independent data stream.By thread distributor 032 is the more processing threads of the high distribution of flows of priority, and a plurality of thread parallels are handled, and preferentially reads this data stream, realizes concurrent transmission and download at the request of data of one or more clients.Simultaneously, the feedback of priority management device 031 customer in response end data charger 04 guarantees that the data stream of failed download can obtain priority processing, once more transmission.
Client data charger 04 is converted to the data of standard JSON encapsulating structure by unserializing device 041 with data stream, and this process is in case failure, and unserializing device 041 will be to priority management device 031 feedback retransmission information.Each JSON structured data through 041 conversion of unserializing device forms the service end response data, and data extract device 042 therefrom extracts the response data of client-requested in real time.Data loading device 043 is loaded on render engine immediately with response data and finishes render process.
In the three-dimensional scenic render process, the real-time loading of asynchronous arrival response data, just can begin to watch and control after making the user login scene, data loading device 043 can load current untapped situation elements and object automatically on the backstage, model in the scene and object can be written into the visual field in turn, progressively improve scene content, avoided the client factor to cause overtime the reporting an error of service according to wait.
Begin to watch and control after the user logins three-dimensional scenic, dynamically display management device 05 can load current untapped scene automatically on the backstage, and model can be written into the visual field in proper order.For super large three-dimensional scenic graph data, utilize resource monitoring device 051, scene level of detail management devices 052, situation elements load/unload device 053 is realized the real-time rendering ability of maximization user terminal to scene.Resource monitoring device 051 monitors the utilization factor of client internal memory or video memory, sets trigger condition by 30%, 50%, 60% and 80% of utilization factor, and feeds back to scene level of detail management devices 052 and situation elements load/unload device 053.Make scene level of detail management devices 052 adjust the topographic details that the Web3D applications client generates, automatically determine that according to the far and near of triangular facet and camera distance the triangle of forming scenario objects shows rank (density), closely triangular facet density in ground is big, remote density is little, thereby saved resource overhead, and don't influenced the rendering effect of picture; By situation elements load/unload device, object model in the three-dimensional swap data is carried out the visual adjustment of seeing scope, Web3D applications client program realizes directly internal storage data being operated, the object that dynamic load comes into view, the shared internal memory and the video memory resource of element, object model in the visual field left in unloading, thereby guarantees that internal memory, video memory occupancy are a lower level.
As shown in Figure 2, utilize real-time rendering device of the present invention to carry out the using method that ultra-large scene is played up, step comprises:
The user proposes the Web3D application request;
Structure converter device 01 is converted to the JSON structure with the encapsulating structure of service end model of place data;
Utilize content compression device 011 to get rid of and the irrelevant redundant data of contextual data;
With the element object instantiation in the model of place, the object of instantiation is converted to independent data stream by serializing device 02;
By priority management device 031, the situation elements object is classified, according to the needs of restoration scenario priority is set;
The data stream of serializing is passed to the different threads processing by thread distributor 032, realize that data parallel transmits;
A, client are converted to the data of JSON construction packages with the serializing data stream that different threads transmits by unserializing device 041;
B, from the JSON structure, extract situation elements by data extract device 042;
C, data loading device 043 real-time loading scenario element;
Repeat a to c step, dynamically improve scene content.
As shown in Figure 3, utilize real-time rendering device of the present invention to carry out the using method that ultra-large scene is played up, step comprises:
Monitor client internal memory, the dynamic utilization factor of video memory by resource monitoring device 051;
When system availability reaches trigger condition, reduce the rendering effect of triangular element or unload the visual field of camera element or the less important situation elements in the sighting distance by situation elements load/unload device 053 by scene level of detail management devices 052;
When system loading is light, improves the rendering effect of triangular element or load the visual field of camera element or the less important situation elements in the sighting distance by situation elements load/unload device 053 by scene level of detail management devices 052.
Above-described embodiment is described preferred implementation of the present invention; be not that scope of the present invention is limited; design under the prerequisite of spirit not breaking away from the present invention; various distortion and improvement that those of ordinary skills make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (7)
1. ultra-large scene real-time rendering device, comprise that tcp data segment and data play up part, tcp data segment comprises Structure Conversion device (01), serializing device (02), service end thread management device (03), data are played up part and are comprised client data charger (04), dynamically display management device (05);
Structure Conversion device (01) according to the request of client to scenario objects, is converted to the JSON structure with the encapsulating structure of model of place response data;
Serializing device (02) is used for model and element object instantiation with the response data scene, and the object of instantiation is converted to independent data stream;
Service end thread management device (03) is used for giving different threads with distribution of flows, realizes the concurrent transmission of each element object in the model of place;
Client data charger (04) is used for the element object of model of place is loaded in real time in client, realizes that concurrent transmission of data and situation elements loading procedure are synchronous;
Dynamically display management device (05) is used to finish the client real-time rendering, regulates the client resource;
It is characterized in that: Structure Conversion device (01) comprises content compression device (011), be used for getting rid of the data and irrelevant XML information data and the redundant data of contextual data of JSON construction packages, comprise newline, space character, tab is used for the header file structure of platform compatibility;
Service end thread management device (03) comprises priority management device (031), is used for the situation elements object of response data is classified, and according to the needs of restoration scenario priority is set;
Dynamically display management device (05) comprises resource monitoring device (051), is used for the utilization factor of surveillance internal memory or video memory, for the optimization system resource provides trigger condition.
2. ultra-large scene real-time rendering device as claimed in claim 1 is characterized in that: client data charger (04) comprises unserializing device (041), data extract device (042), data loading device (043);
Unserializing device (041) is used for data stream is converted to the data of JSON construction packages, for the data stream of convert failed, sends serializing request again to serializing device (02);
Data extract device (042) is used for extracting situation elements and object according to client-requested from the contextual data of JSON encapsulating structure;
Data loading device (043) is used for real-time loading scenario element and object to OpenGL or Direct3D, finishes playing up of each object.
3. ultra-large scene real-time rendering device as claimed in claim 2, it is characterized in that: service end thread management device (03) comprises thread distributor (032), be used for the data stream of serializing being passed to different threads and handle, realize that data parallel transmits according to client-requested priority.
4. ultra-large scene real-time rendering device as claimed in claim 3, it is characterized in that: dynamically display management device (05) comprises scene level of detail management devices (052), according to the control signal of resource monitoring device (051), the visual field or the sighting distance of control camera element are adjusted leg-of-mutton rendering effect and the pinup picture resolution of forming object in the scene.
5. ultra-large scene real-time rendering device as claimed in claim 4, it is characterized in that: dynamically display management device (05) comprises situation elements load/unload device (053), according to the control signal of resource monitoring device (051), the in real time visual field or the situation elements in the sighting distance and the object of load or unload camera element from internal memory and video memory.
6. utilize the method for the described arbitrary ultra-large scene real-time rendering device based on Web3D of claim 1 to 5, its step comprises:
The user proposes the Web3D application request;
Structure converter device (01) is converted to the JSON structure with the encapsulating structure of service end model of place data;
Utilize content compression device (011) to get rid of and the irrelevant redundant data of contextual data;
With the element object instantiation in the model of place, the object of instantiation is converted to independent data stream by serializing device (02);
By priority management device (031), the situation elements object is classified, according to the needs of restoration scenario priority is set;
The data stream of serializing is passed to the different threads processing by thread distributor (032), realize that data parallel transmits;
A, client are converted to the data of JSON construction packages with the serializing data stream that different threads transmits by unserializing device (041);
B, from the JSON structure, extract situation elements by data extract device (042);
C, data loading device (043) be the loading scenario element in real time;
Repeat a to c step, dynamically improve scene content.
7. as the method for arbitrary ultra-large scene real-time rendering device based on Web3D as described in the claim 1 to 5, its step comprises:
Monitor client internal memory, the dynamic utilization factor of video memory by resource monitoring device (051);
When system availability reaches trigger condition, reduce the rendering effect of triangular element or unload the visual field of camera element or the less important situation elements in the sighting distance by situation elements load/unload device (053) by scene level of detail management devices (052);
When system loading is light, improves the rendering effect of triangular element or load the visual field of camera element or the less important situation elements in the sighting distance by situation elements load/unload device (053) by scene level of detail management devices (052).
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| CN104410667B (en) * | 2014-10-31 | 2017-12-12 | 北京思特奇信息技术股份有限公司 | Conversion method and system of a kind of XML message to JSON messages |
| CN106293495A (en) * | 2015-05-22 | 2017-01-04 | 中兴通讯股份有限公司 | The date storage method of terminal unit and terminal unit |
| CN106254489A (en) * | 2016-08-16 | 2016-12-21 | 王淼 | A kind of cloud rendering system without file transmission and method thereof |
| CN113721908A (en) * | 2021-08-30 | 2021-11-30 | 湖南快乐阳光互动娱乐传媒有限公司 | Infinite cascade assembly rendering method and device |
| CN113721908B (en) * | 2021-08-30 | 2024-03-22 | 湖南快乐阳光互动娱乐传媒有限公司 | Unlimited cascade component rendering method and device |
| CN117854518A (en) * | 2024-03-05 | 2024-04-09 | 深圳市时代经纬科技有限公司 | Method and device for realizing voice encoding and decoding and transcoding by WebGPU |
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