CN111709113B - Graphics-based ceiling lamp simulation method, device, terminal and storage medium - Google Patents
Graphics-based ceiling lamp simulation method, device, terminal and storage medium Download PDFInfo
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- CN111709113B CN111709113B CN202010375005.8A CN202010375005A CN111709113B CN 111709113 B CN111709113 B CN 111709113B CN 202010375005 A CN202010375005 A CN 202010375005A CN 111709113 B CN111709113 B CN 111709113B
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Abstract
The invention discloses a method and a device for simulating a ceiling lamp based on graphics, a storage medium and an intelligent terminal, wherein the method comprises the following steps: acquiring a webgis system built by a preselected development environment tool; selecting a preset ceiling lamp program, constructing a ceiling lamp model, and setting ceiling lamp parameters; and (3) using a preset algorithm and realizing the simulation of the dome lamp effect based on the dome lamp parameters. According to the invention, the webgis system can be built in the shortest time by adopting the development environment tool, so that the built webgis system has the capability of being directly connected with the bottom layer, and the efficient and stable special effect is rendered by using the graphic accelerator, thereby being beneficial to more realistically simulating the ceiling lamp.
Description
Technical Field
The invention relates to the technical field of cornea image processing, in particular to a method, a device, a terminal and a storage medium for simulating a dome lamp based on graphics.
Background
Visual presentation and restoration of some entities or effects is often required in the webgis field. For example, to present the effect of being illuminated by a dome lamp in a city, these special effects are often difficult to implement or are not implemented efficiently so that they cannot be used integrally. The webgis system itself tends to be more specialized in geographic attribute functions, and basically does not provide integration of some vivid special effects, but some demands are actually met when the webgis system is applied to service development, such as a ceiling lamp which is used when a local area of a city group at night is highlighted. The webgis system does not implement a substantially overlighting system. Therefore, the existing webgis system cannot realize the simulation of the ceiling lamp.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problems that aiming at the defects in the prior art, a method, a device, a terminal and a storage medium for simulating a ceiling lamp based on graphics are provided, and the method, the device, the terminal and the storage medium aim to solve the problem that a webgis system in the prior art cannot realize simulation of the ceiling lamp.
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect, an embodiment of the present invention provides a method for simulating a ceiling lamp based on graphics, where the method includes:
acquiring a webgis system built by a preselected development environment tool;
selecting a preset ceiling lamp program, constructing a ceiling lamp model, and setting ceiling lamp parameters;
and (3) using a preset algorithm and realizing the simulation of the dome lamp effect based on the dome lamp parameters.
In one embodiment, the development environment tools include a mapbox gl. Js development tool and a three. Js development tool; the mapbox gl. Js development tool is a map open source engine of a webgis system; the thre. Js development tool is a generic engine at the web end.
In one embodiment, the ceiling lamp parameters include: intensity of illumination, angle of illumination, illumination distance, attenuation coefficient, position parameter, and orientation parameter.
In one embodiment, the dome lamp model is constructed using the three spotlight tool in the three.
In one embodiment, when setting the location parameter, the setting the ceiling lamp parameter includes:
acquiring longitude and latitude coordinates and height at a preset position based on a mode of converting longitude and latitude into Cartesian space coordinates;
and converting the longitude and latitude coordinates and the altitude into Cartesian space coordinate parameters, and setting the Cartesian space coordinate parameters as the position parameters of the dome lamp model.
In one embodiment, when setting the orientation parameter, the setting the ceiling lamp parameter includes:
setting a reference entity for indicating the orientation of the dome lamp model;
and setting the orientation parameters of the dome lamp model based on the reference entity.
In one embodiment, the performing the ceiling effect simulation using a preset algorithm and based on the ceiling lamp parameters includes:
invoking a graphics accelerator using a webgl pipeline programming algorithm;
and simulating the luminescence of the dome lamp based on the parameter of the dome lamp and by using the calculation of the graphic accelerator.
A graphics-based dome lamp simulation apparatus, wherein the apparatus comprises:
the system building unit is used for obtaining a webgis system built by a preselected development environment tool;
the parameter setting unit is used for selecting a preset ceiling lamp program, constructing a ceiling lamp model and setting the parameters of the ceiling lamp;
and the effect simulation unit is used for realizing the effect simulation of the dome lamp by using a preset algorithm and based on the parameters of the dome lamp.
In a third aspect, an embodiment of the present invention provides an intelligent terminal, including a memory, and one or more programs, where the one or more programs are stored in the memory, and configured to be executed by one or more processors, where the one or more programs include steps for executing the graphics-based dome lamp simulation method according to any one of the above.
In a fourth aspect, embodiments of the present invention further provide a non-transitory computer-readable storage medium, which when executed by a processor of an electronic device, causes the electronic device to perform the steps of the graphics-based dome lamp simulation method described in any one of the above.
The invention has the beneficial effects that: according to the invention, the webgis system can be built in the shortest time by adopting the development environment tool, so that the built webgis system has the capability of being directly connected with the bottom layer, and the efficient and stable special effect is rendered by using the graphic accelerator, thereby being beneficial to more realistically simulating the ceiling lamp.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
Fig. 1 is a flowchart of a method for simulating a ceiling lamp based on graphics according to an embodiment of the present invention.
Fig. 2 is a graph of a simulation effect of a dome lamp based on a graphically-based dome lamp simulation method according to an embodiment of the present invention.
Fig. 3 is a graph of simulated effects of a dome lamp after attenuation according to a graphically-based dome lamp simulation method according to an embodiment of the present invention.
Fig. 4 is a schematic block diagram of a schematic diagram of a ceiling lamp simulation device based on graphics according to an embodiment of the present invention.
Fig. 5 is a functional schematic diagram of an intelligent terminal according to an embodiment of the present invention.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Visual presentation and restoration of some entities or effects is often required in the webgis field. For example, to present the effect of being illuminated by a dome lamp in a city, these special effects are often difficult to implement or are not implemented efficiently so that they cannot be used integrally. The webgis system itself tends to be more specialized in geographic attribute functions, and basically does not provide integration of some vivid special effects, but some demands are actually met when the webgis system is applied to service development, such as a ceiling lamp which is used when a local area of a city group at night is highlighted. The webgis system does not implement a substantially overlighting system. Therefore, the existing webgis system cannot realize the simulation of the ceiling lamp.
In order to solve the above problems, the present invention provides a method for simulating a ceiling lamp based on graphics, which is implemented as shown in fig. 1, and includes the following steps:
step S100, acquiring a webgis system built by a preselected development environment tool;
step 200, selecting a preset ceiling lamp program, constructing a ceiling lamp model, and setting ceiling lamp parameters;
and step 300, using a preset algorithm and realizing the simulation of the effect of the dome lamp based on the parameters of the dome lamp.
In particular, since the existing webgis system basically does not implement the over-illumination system. For this reason, this embodiment requires the construction of a completely new webgis system. In this embodiment, a suitable development environment tool is selected to build the webgis system. In particular applications, the present embodiment selects mapbox gl. Js and three. Js as development tools. Both mapbox gl. Js and three. Js are world-level open source graphics engines. mapbox gl. Js is a map open source engine in the webgis domain, used as a geographic communications system. the thread. Js is a web-end general engine, has rich community development components and accumulation, and is highly abstract and graphical drawing and rich interface expansion. Specifically, the Mapbox gl. Js is a web front-end map rendering library pushed by the Mapbox, and the map rendering library adopts webGL technology, so that the map rendering library is excellent in map rendering interaction and the like. And three. Js is a WebGL third party library written in JavaScript, and provides a very large number of 3D display functions. WebGL (full-write Web Graphics Library) is a 3D drawing protocol, and the drawing technology standard allows combining JavaScript with OpenGL ES 2.0, and by adding one JavaScript binding of OpenGL ES 2.0, webGL can provide hardware 3D accelerated rendering for HTML5 Canvas, so that Web developers can more smoothly show 3D scenes and models in a browser by means of a system graphics card, and can also create complex navigation and data visualization. It can be seen that WebGL technical standards dispense with the trouble of developing web-specific rendering plug-ins, can be used to create web pages with complex 3D structures, and can even be used to design 3D web games, etc. Therefore, in the embodiment, mapbox gl. Js and three. Js are selected as development tools to build the webgis system, and the webgis system can be built in the shortest time by adopting an open source technology, so that the webgis system has quite high maturity and expansibility. The mapbox gl. Js can be used as a layer to be independently rendered in a map, the rich interfaces of the three. Js support the development of a graphics bottom layer interface webgl, and the parallel rendering strength calculation of the GPU (graphics accelerator) can be called by utilizing the pipeline programming of the webgl to simulate a realistic ceiling lamp special effect, so that the webgis system built by the mapbox gl. Js has the capability of being directly connected with the bottom layer, and the GPU (graphics accelerator) is utilized to render the efficient and stable special effect.
Further, in this embodiment, after the webgis system is built, a preset dome lamp program is selected, a dome lamp model is constructed, and dome lamp parameters are set. In specific implementation, the ceiling lamp in this embodiment belongs to a relatively common implementation in an illumination system. The ceiling lamp is a lamp that emits from a point in one direction, along a cone, the farther it is from the light, the larger its size. In the irradiation range, the dome lamp irradiates the object, and the shadow effect of the object relative to the position and intensity of the dome lamp is calculated and generated, which is similar to a street lamp seen in daily life. This embodiment uses the three spotlight in three js to construct a dome lamp, so we have a dome lamp model in three js system. Then, based on the dome lamp model, the irradiation intensity, irradiation angle, irradiation distance, attenuation coefficient and position parameters, and orientation (vector) parameters of the dome lamp model are set. Together, these parameters describe the morphology of a dome lamp, where to illuminate, what its intensity is, how large the illumination is, how far to illuminate, and what the law of attenuation is. The setting of the parameters of the dome lamp in this embodiment is to make clear the apparent basis and path of the effect fruits of the dome lamp, and provide basis and reference for realizing the simulation of the dome lamp.
In one embodiment, the default method of using threebox. Object3d ({ obj: spotLight }) setcoders ([ longitude, latitude, height ]) to load the dome lamp is ineffective when setting the location parameter, resulting in its coordinates running to the location of the longitude and latitude coordinate (0, 0) point, regardless of the longitude and latitude height set. This is because in the source code of mapbox gl. Js, the three. Spotlight object loaded with custom three. Js is correct, but will make an error when loading its helper three. Spotlighthelter, because the helper has an error in calculating the coordinates in the source code in three. Js. Therefore, when setting the location parameter, the embodiment can discard the spotlighthelter to directly use the three. In specific implementation, the embodiment obtains longitude and latitude coordinates and height at a preset position based on a mode of converting longitude and latitude into Cartesian space coordinates; and converting the longitude and latitude coordinates and the altitude into Cartesian space coordinate parameters, and setting the Cartesian space coordinate parameters as position parameters of the ceiling lamp model, namely determining the position of the ceiling lamp model.
In another embodiment, after setting other parameters of the dome lamp model, the dome lamp model defaults to the point of origin (0, 0) of the cartesian space coordinates, and the embodiment needs to let the dome lamp irradiate in a desired direction, that is, set the orientation of the dome lamp model. In a specific application, the embodiment sets a reference entity for indicating the orientation of the ceiling lamp. In a specific application, the reference entity is the three. And then simulating the luminescence of the dome lamp based on the parameters of the dome lamp and by using the calculation of the graphic accelerator. I.e. using threebox.object3D ({ obj: object3D }) setcoordinates ([ longitude, latitude, altitude ]), to the place where the ceiling lamp is desired to illuminate, and then spotlight.target = Object 3D.
Further, in this embodiment, after setting the dome lamp parameter, a graphics accelerator is called by using a webgl pipeline programming algorithm; and simulating the luminescence of the dome lamp based on the parameter of the dome lamp and by using the calculation of the graphic accelerator. As particularly shown in fig. 2 and 3. Fig. 2 is a graph of a simulation effect of a dome lamp based on the graphics-based dome lamp simulation method provided in this embodiment. Fig. 3 is a graph of simulated effects of a dome lamp after attenuation according to a graphically-based dome lamp simulation method according to an embodiment of the present invention. As can be seen from fig. 2 and 3, the lighting effect of the ceiling lamp can be simulated very realistically in this embodiment.
Based on the above embodiment, the present invention further provides a device for simulating a ceiling lamp based on graphics, as shown in fig. 4, the device includes: a system building unit 10, a parameter setting unit 20 and an effect simulation unit 30. Specifically, the system building unit 10 is configured to obtain a webgis system built by a pre-selected development environment tool; the parameter setting unit 20 is used for selecting a preset ceiling lamp program, constructing a ceiling lamp and setting parameters of the ceiling lamp; and an effect simulation unit 30, configured to implement a dome lamp effect simulation based on the dome lamp parameters using a preset algorithm.
Based on the above embodiment, the present invention further provides an intelligent terminal, and a functional block diagram thereof may be shown in fig. 5. The intelligent terminal comprises a processor, a memory, a network interface, a display screen and a temperature sensor which are connected through a system bus. The processor of the intelligent terminal is used for providing computing and control capabilities. The memory of the intelligent terminal comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the intelligent terminal is used for communicating with an external terminal through network connection. The computer program when executed by a processor implements a graphically-based ceiling lamp simulation method. The display screen of the intelligent terminal can be a liquid crystal display screen or an electronic ink display screen, and a temperature sensor of the intelligent terminal is arranged in the intelligent terminal in advance and used for detecting the running temperature of internal equipment.
It will be appreciated by those skilled in the art that the schematic block diagram shown in fig. 5 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the smart terminal to which the present inventive arrangements are applied, and that a particular smart terminal may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.
In one embodiment, a smart terminal is provided that includes a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors, the one or more programs comprising instructions for:
acquiring a webgis system built by a preselected development environment tool;
selecting a preset ceiling lamp program, constructing a ceiling lamp, and setting parameters of the ceiling lamp;
and (3) using a preset algorithm and realizing the simulation of the dome lamp effect based on the dome lamp parameters.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. 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.
In summary, the invention discloses a method and a device for simulating a ceiling lamp based on graphics, a storage medium and an intelligent terminal, wherein the method comprises the following steps: acquiring a webgis system built by a preselected development environment tool; selecting a preset ceiling lamp program, constructing a ceiling lamp model, and setting ceiling lamp parameters; and (3) using a preset algorithm and realizing the simulation of the dome lamp effect based on the dome lamp parameters. According to the invention, the webgis system can be built in the shortest time by adopting the development environment tool, so that the built webgis system has the capability of being directly connected with the bottom layer, and the efficient and stable special effect is rendered by using the graphic accelerator, thereby being beneficial to more realistically simulating the ceiling lamp.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (4)
1. A graphics-based dome lamp simulation method, the method comprising:
acquiring a webgis system built by a preselected development environment tool;
selecting a preset ceiling lamp program, constructing a ceiling lamp model, and setting ceiling lamp parameters;
using a preset algorithm and realizing the simulation of the effect of the dome lamp based on the parameters of the dome lamp;
the development environment tools comprise a mapbox gl. Js development tool and a three. Js development tool; the mapbox gl. Js development tool is a map open source engine of a webgis system; the thread. Js development tool is a general engine of a web end;
the ceiling lamp parameters include: irradiation intensity, irradiation angle, irradiation distance, attenuation coefficient, position parameter and orientation parameter;
the ceiling lamp model is constructed using the three spotlight tool of the three js development tool;
when setting the location parameter, the setting the ceiling lamp parameter includes:
acquiring longitude and latitude coordinates and height at a preset position based on a mode of converting longitude and latitude into Cartesian space coordinates;
converting the longitude and latitude coordinates and the height into Cartesian space coordinate parameters, and setting the Cartesian space coordinate parameters as position parameters of the ceiling lamp model;
when setting up the orientation parameter, set up the spotlight parameter, include:
setting a reference entity for indicating the orientation of the dome lamp model;
setting an orientation parameter of the dome lamp model based on the reference entity;
the method for realizing the ceiling lamp effect simulation by using the preset algorithm and based on the ceiling lamp parameters comprises the following steps:
invoking a graphics accelerator using a webgl pipeline programming algorithm;
and simulating the luminescence of the dome lamp based on the parameter of the dome lamp and by using the calculation of the graphic accelerator.
2. A graphics-based dome lamp simulation apparatus, the apparatus comprising:
the system building unit is used for obtaining a webgis system built by a preselected development environment tool;
the parameter setting unit is used for selecting a preset ceiling lamp program, constructing a ceiling lamp model and setting the parameters of the ceiling lamp;
the effect simulation unit is used for realizing the effect simulation of the dome lamp based on the dome lamp parameters by using a preset algorithm;
the development environment tools comprise a mapbox gl. Js development tool and a three. Js development tool; the mapbox gl. Js development tool is a map open source engine of a webgis system; the thread. Js development tool is a general engine of a web end;
the ceiling lamp parameters include: irradiation intensity, irradiation angle, irradiation distance, attenuation coefficient, position parameter and orientation parameter;
the ceiling lamp model is constructed using the three spotlight tool of the three js development tool;
when setting the position parameter, the parameter setting unit is specifically configured to:
acquiring longitude and latitude coordinates and height at a preset position based on a mode of converting longitude and latitude into Cartesian space coordinates;
converting the longitude and latitude coordinates and the height into Cartesian space coordinate parameters, and setting the Cartesian space coordinate parameters as position parameters of the ceiling lamp model;
when setting the orientation parameter, the parameter setting unit is specifically configured to:
setting a reference entity for indicating the orientation of the dome lamp model;
setting an orientation parameter of the dome lamp model based on the reference entity;
the effect simulation unit is specifically configured to:
invoking a graphics accelerator using a webgl pipeline programming algorithm;
and simulating the luminescence of the dome lamp based on the parameter of the dome lamp and by using the calculation of the graphic accelerator.
3. An intelligent terminal comprising a memory and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by one or more processors to implement the steps of the method of claim 1.
4. A non-transitory computer readable storage medium, wherein instructions in the storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the steps of the method of claim 1.
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