CN113269894A - Method and device for guiding view of event activity scene - Google Patents
Method and device for guiding view of event activity scene Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for guiding an event activity scene, which comprises the following steps: in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle. The device performs the above method. The method and the device for guiding the scene of the event activity, provided by the embodiment of the invention, can quickly and pertinently browse the key information of the key target object in the scene of the event activity.
Description
Technical Field
The invention relates to the technical field of virtual reality, in particular to a method and a device for guiding a scene of an event activity.
Background
The virtual reality is that a virtual world is generated by a computer, a real environment is simulated, and a user interacts and influences with an object in the virtual environment by means of necessary equipment and perception in the aspects of visual perception, listening perception, tactile perception and the like, so that the virtual reality has the characteristics of interactivity, imagination, immersion and the like.
The virtual reality technology can be widely applied to industries such as military affairs, medical treatment, film and television, and for the event activity scenes in the cultural and sports industry, due to the characteristics of complexity and non-intuitive performance, how to browse the key information of the key target object quickly and pertinently becomes a problem which needs to be solved urgently.
Disclosure of Invention
Aiming at the problems in the prior art, the embodiment of the invention provides a method and a device for guiding a scene of an event activity.
The embodiment of the invention provides a method for guiding an event activity scene, which comprises the following steps:
in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
Wherein, in the process of browsing the virtual event activity scene based on the target navigation path, switching the shooting angle of view of the virtual camera to the overview angle of view, and switching the shooting position of the virtual camera to be above the key target object, comprises:
if the fact that the distance between the shooting position of the virtual camera and the key target object is smaller than or equal to a preset distance threshold value is detected, the shooting visual angle of the virtual camera is switched to be an overview visual angle, and the shooting position of the virtual camera is switched to be above the key target object.
Decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model, wherein the method comprises the following steps:
starting timing, and hiding a part of models corresponding to the highest layer of the three-dimensional virtual model when the timing duration reaches the preset time interval;
hiding a part of the model corresponding to the next highest layer of the three-dimensional virtual model when the timed duration reaches the preset time interval again; and repeatedly executing until the traversing is completed to complete the partial model corresponding to the whole hierarchy of the three-dimensional virtual model.
Wherein the three-dimensional virtual model comprises an outdoor virtual venue model; correspondingly, after the step of decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model, the method further comprises:
restoring the outdoor virtual stadium model before layer-by-layer decomposition;
and loading virtual animation of the athlete for moving on the playing field of the outdoor virtual stadium model, and loading the virtual animation of the athlete for watching the motion on the auditorium of the outdoor virtual stadium model.
Wherein the three-dimensional virtual model comprises an indoor virtual venue model; correspondingly, the decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model comprises the following steps:
hiding a roof model of the indoor virtual venue model, and switching the shooting position of the virtual camera to a preset height position above the highest layer of the indoor virtual venue model;
and in the process of decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model, keeping the preset height position relative to each layer unchanged, and switching and browsing the overview visual angles of other layers layer by layer.
Wherein the method further comprises:
determining a target layer comprising a competition field in the process of browsing each layer by layer based on the overview viewing angle;
loading a virtual animation of a player playing a sport on a playing field in the target layer, and loading a virtual animation of a viewer watching the sport on a spectator seat in the target layer.
Displaying the subareas corresponding to the layers respectively in the process of browsing the layers layer by layer based on the overview visual angle; correspondingly, the method further comprises the following steps:
acquiring user permission of a navigation user;
hiding the subarea which the navigation user does not have access to; wherein the partition comprises a registration partition and/or a running partition of the event activity.
The embodiment of the invention provides a device for guiding a scene of an event activity, which comprises:
the switching unit is used for switching the shooting visual angle of the virtual camera to the overview visual angle and switching the shooting position of the virtual camera to be above the key target object in the process of browsing the virtual event activity scene based on the target navigation path; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and the display unit is used for decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object based on the overview visual angle at the position of the upper part.
An embodiment of the present invention provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein,
the processor, when executing the computer program, implements the method steps of:
in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
An embodiment of the invention provides a non-transitory computer readable storage medium having a computer program stored thereon, which when executed by a processor implements the following method steps:
in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
According to the method and the device for guiding the event activity scene, provided by the embodiment of the invention, the key information of the key target objects in the event activity scene can be quickly and pertinently browsed by browsing the three-dimensional virtual model which is decomposed layer by layer above the key target objects and at the overview visual angle.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flowchart illustrating an embodiment of a method for navigating an event scene according to the present invention;
fig. 2(a) to fig. 2(d) are respectively screenshots of a process of browsing a virtual event activity scene based on a target navigation path according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of a navigation device for event scenes according to the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of an embodiment of a method for navigating an event activity scene, as shown in fig. 1, the method for navigating an event activity scene provided by the embodiment of the present invention includes the following steps:
s101: in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure.
Specifically, the device switches the shooting view angle of the virtual camera to the overview view angle and switches the shooting position of the virtual camera to be above the key target object in the process of browsing the virtual event activity scene based on the target navigation path; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure. The apparatus may be a computer device performing the above method, and may be a terminal used by a user, for example. The method may run in a Unity environment. The event activity may include a sporting event activity. The virtual event activity scene can be understood as a virtual scene for carrying cultural and physical event activities, and mainly comprises a venue for simulating the event activities and the surrounding environment.
The target navigation path may be a path which is designed in advance and simulates a virtual camera to track and shoot a virtual event activity scene, and in the process of designing the target navigation path, the competition venue may be used as a key target object and added to the target navigation path.
It can be understood that the navigation parameters such as the position moving speed, the shooting position and the shooting visual angle of the virtual camera can be set independently according to the actual situation, and the navigation parameters can be changed in real time in the process of browsing the virtual event activity scene based on the target navigation path, so that the display effect of navigation browsing is controlled independently, and the full view of the virtual event activity scene can be browsed quickly and comprehensively.
The overview perspective can be understood as a shooting perspective formed by rotating a preset angle along the direction of the virtual camera on the basis of the overlooking perspective.
Further, the key target object may also be a three-dimensional virtual model which is pre-established in the virtual event activity scene, contains a hierarchical structure, and is a landmark building for the event activity. Landmark buildings can be understood with reference to landmark landscapes in tourist attractions.
The key information of the key target object can comprise the display content of each layer of the key target object, and the key information can also comprise the building characteristics of the key target object, the held event, the use time and the like.
Fig. 2(a) to fig. 2(d) are respectively a screenshot of a process of browsing a virtual event activity scene based on a target navigation path according to an embodiment of the present invention, that is, the sequence of paths that the target navigation path sequentially passes through is from fig. 2(a) to fig. 2(d), specifically, fig. 2(a) is an initial position of the target navigation path; and taking the initial position as a starting point to shoot the position, and moving the shooting position of the virtual camera according to the preset position moving speed and the preset shooting visual angle to obtain the midway shooting scene.
Fig. 2(b) shows a key object in the course of the object navigation path, which has not been decomposed layer by layer; fig. 2(c) shows the key object on the way of the object navigation path, which is being decomposed layer by layer.
Fig. 2(d) is the key target before recovering the layer-by-layer decomposition, and if there are other key targets in the target navigation path, the navigation continues to the other key targets, and the same steps are performed; if the target navigation path has no other critical objects, the target navigation path is terminated.
The viewing angles shown in fig. 2(b) and 2(c) are overview viewing angles, which are helpful for looking down the entire view of the key object, and further, the specific content of the key information (not shown) may be displayed at the edge of the image screen in fig. 2(b) or 2 (c).
The shooting position shown in fig. 2(b) and 2(c) is above the key object, and contributes to looking down the entire view of the key object. The key target may be a national ski center race as shown in fig. 2(b) and 2 (c).
The national skiing center competition field of Zhangkou is a three-dimensional virtual model established by modeling tool software, and the three-dimensional virtual model has a layered building structure. Taking the number of layers as two layers as an example, namely, a first layer corresponds to a partial model in the modeling process, a second layer corresponds to a partial model, and the two partial models are combined to form the whole three-dimensional virtual model.
S102: and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
Specifically, the device is located above the three-dimensional virtual model, and the three-dimensional virtual model is displayed after being decomposed layer by layer according to a preset time interval in the process of browsing the key target object based on the overview visual angle. The preset time interval can be set autonomously according to actual conditions, and can be set by referring to the time required by the navigation user to browse the corresponding part of the model of each layer of the three-dimensional virtual model, for example, 3 seconds.
It should be noted that the preset time intervals corresponding to the respective layers may be the same or different, and referring to the above example, the first layer and the second layer may both correspond to 3 seconds of browsing time, or the first layer may correspond to 3 seconds of browsing time, and the second layer may correspond to 5 seconds of browsing time.
For a specific implementation of layer-by-layer decomposition, hiding each layer may be included, without specific limitation.
For example, before hiding the second layer, the three-dimensional virtual model is shown in fig. 2 (b); after hiding the second layer, the three-dimensional virtual model is now shown in fig. 2 (c). If there is no subsurface layer, there may be no need to conceal the first layer.
According to the navigation method for the event activity scene, provided by the embodiment of the invention, the key information of the key target object in the event activity scene can be browsed rapidly and pertinently by browsing the three-dimensional virtual model decomposed layer by layer above the key target object and at the overview visual angle.
On the basis of the foregoing embodiment, in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting angle of view of a virtual camera to an overview angle of view and switching a shooting position of the virtual camera to be above a key target object includes:
specifically, if the device detects that the distance between the shooting position of the virtual camera and the key target object is smaller than or equal to a preset distance threshold, the shooting angle of the virtual camera is switched to the overview angle, and the shooting position of the virtual camera is switched to the position above the key target object. The distance between the photographing position and the key object may be a real distance, that is, a distance between the photographing position and the key object calculated based on world coordinates.
It should be noted that, since the key object may be a large-volume object, the distance between the shooting position and the key object may be the shortest distance between the shooting position and the key object, and is not particularly limited.
The preset distance threshold value can be set autonomously according to actual conditions, and is 1000 meters for example.
According to the navigation method for the event activity scene, provided by the embodiment of the invention, the actions of switching the shooting visual angle and the shooting position are triggered through reasonable position conditions, so that the key information of the key target object in the event activity scene can be further quickly browsed.
On the basis of the above embodiment, the decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model includes:
specifically, the device starts timing, and when the timing duration reaches the preset time interval, a part of models corresponding to the highest layer of the three-dimensional virtual model are hidden; the timing starting action can be triggered at the moment when the shooting position and the shooting visual angle are switched. If the three-dimensional virtual model has three layers of overground parts and no underground layer, hiding a part of the model corresponding to the third layer when the timing time reaches a preset time interval.
Specifically, when the device waits for the timed duration to reach the preset time interval again, hiding a part of models corresponding to the next highest layer of the three-dimensional virtual model; and repeatedly executing until the traversing is completed to complete the partial model corresponding to the whole hierarchy of the three-dimensional virtual model. When the timed duration reaches the preset time interval again, hiding the partial model corresponding to the second layer, and when the timed duration reaches the preset time interval again, hiding the partial model corresponding to the first layer again.
According to the method for guiding the competition activity scene, the models of the corresponding parts of each layer of the three-dimensional virtual model are hidden in sequence from high to low; the method can further browse the key information of the key target object in the event activity scene quickly and in a targeted manner.
On the basis of the above embodiment, the three-dimensional virtual model comprises an outdoor virtual venue model; correspondingly, after the step of decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model, the method further comprises:
specifically, the device recovers the outdoor virtual stadium model before layer-by-layer decomposition; the display effect after recovery is shown in fig. 2 (d).
Specifically, the device loads virtual animation of the athlete for playing the sports on the playing field of the outdoor virtual stadium model, and loads virtual animation of the spectator for watching the sports on the spectator seat of the outdoor virtual stadium model. The virtual animation of the athlete performing the sport of this embodiment is: the skier performs a virtual animation of skiing.
The outdoor virtual venue model is displayed comprehensively from whole to detail and from static to dynamic by firstly summarizing the overall appearance of the outdoor virtual venue model, then displaying the detail content of each layer of the outdoor virtual venue model in a layered manner, finally recovering the outdoor virtual venue model before being decomposed layer by layer, and loading the virtual animation of athletes and audiences.
The method for guiding the scene of the event activity provided by the embodiment of the invention can pointedly and comprehensively browse the key information of the outdoor virtual venue model.
On the basis of the above embodiment, the three-dimensional virtual model comprises an indoor virtual venue model; correspondingly, the decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model comprises the following steps:
specifically, the device hides the roof model of the indoor virtual venue model, and switches the shooting position of the virtual camera to a preset height position above the highest floor of the indoor virtual venue model. The roof model may be embodied as a roof wall model of an indoor virtual venue model.
The preset height position can be selected to be 3 meters above the center position of the ground of the highest layer, namely the height and the position are included.
Specifically, the device decomposes layer by layer according to a preset time interval and displays the three-dimensional virtual model, the preset height position relative to each layer is kept unchanged, and the overview visual angles of other layers are switched and browsed layer by layer. For example, the indoor virtual stadium model is the three-layer above the ground, and the two-layer below the ground, the three-layer is switched to the position 3 meters above the ground center of the third layer, so that the third layer is browsed in the overview view.
After the preset time interval, switching to a position 3 meters above the ground center position of the second layer, browsing the second layer with an overview viewing angle, and so on, which is not described again.
The method for guiding the scene of the event activity provided by the embodiment of the invention can pointedly and comprehensively browse the key information of the indoor virtual venue model.
On the basis of the above embodiment, the method further includes:
specifically, the device determines a target layer comprising a competition field in the process of browsing each layer by layer based on the overview viewing angle; taking the indoor virtual venue model as a badminton venue as an example, if the badminton court is on the second layer of the venue, the target layer is the second layer.
Specifically, the device loads a virtual animation of the player playing the sports on the playing field in the target layer, and loads a virtual animation of the audience watching the sports on the auditorium in the target layer. It should be noted that the relevant virtual animation of the players and spectators at this step is in the target layer, unlike the case of the outdoor virtual stadium model described above.
The method for guiding the event activity scene provided by the embodiment of the invention can be used for further pertinently and comprehensively browsing the key information of the indoor virtual venue model.
On the basis of the embodiment, in the process of browsing each layer by layer based on the overview visual angle, displaying the subareas corresponding to each layer; correspondingly, the method further comprises the following steps:
specifically, the device acquires the user right of the navigation user; the user authority may include a general user and a professional user, and is not particularly limited. For ordinary users, the competition field and the auditorium can be browsed; for professional users, in addition to browsing the playing field and auditorium, it is also possible to browse the subareas associated with their specialties.
Specifically, the device hides the partition which the navigation user does not have access to; wherein the partition comprises a registration partition and/or a running partition of the event activity. The specific manner of the concealment process is not particularly limited.
The registration partition and the execution partition are specifically described as follows:
and (4) running the partitions: the space is divided according to the use function, and the space of the venue is reasonably distributed to each client group and business department participating in operation. This space includes enclosed spaces, open spaces and traffic spaces.
Registering the partition: the system is a tool for managing the passing authority of each client group by an activity organizer or an operation team, and the management idea and the management target of the organizer or the operation team can be reflected.
The method for navigating the event activity scene provided by the embodiment of the invention can further ensure that key information in the indoor virtual venue model cannot be revealed to an unauthorized navigation user in the navigation process.
Fig. 3 is a schematic structural diagram of an embodiment of the event activity scene navigation apparatus of the present invention, and as shown in fig. 3, an embodiment of the present invention provides an event activity scene navigation apparatus, which includes a switching unit 301 and a display unit 302, wherein:
the switching unit 301 is configured to switch a shooting angle of a virtual camera to an overview angle and switch a shooting position of the virtual camera to be above a key target object in a process of browsing a virtual event activity scene based on a target navigation path; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; the display unit 302 is configured to decompose layer by layer according to a preset time interval and display the three-dimensional virtual model in the process of browsing the key target object based on the overview viewing angle at the upper position.
Specifically, the switching unit 301 is configured to switch a shooting angle of view of the virtual camera to an overview angle of view and switch a shooting position of the virtual camera to be above the key target object in the process of browsing the virtual event activity scene based on the target navigation path; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; the display unit 302 is configured to decompose layer by layer according to a preset time interval and display the three-dimensional virtual model in the process of browsing the key target object based on the overview viewing angle at the upper position.
The event activity scene navigation device provided by the embodiment of the invention can browse the key information of the key target object in the event activity scene quickly and pertinently by browsing the three-dimensional virtual model decomposed layer by layer above the key target object and at the overview viewing angle.
The event activity scene navigation apparatus provided in the embodiment of the present invention may be specifically configured to execute the processing flows of the above method embodiments, and the functions thereof are not described herein again, and refer to the detailed description of the above method embodiments.
Fig. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 4, the electronic device includes: a processor (processor)401, a memory (memory)402, and a bus 403;
the processor 401 and the memory 402 complete communication with each other through a bus 403;
the processor 401 is configured to call the program instructions in the memory 402 to execute the methods provided by the above-mentioned method embodiments, for example, including: in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
The present embodiment discloses a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the method provided by the above-mentioned method embodiments, for example, comprising: the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
The present embodiments provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the methods provided by the above method embodiments, for example, including: the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure; and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for guiding a scene of an event activity, comprising:
in the process of browsing a virtual event activity scene based on a target navigation path, switching a shooting visual angle of a virtual camera to an overview visual angle, and switching a shooting position of the virtual camera to be above a key target object; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object at the upper position based on the overview visual angle.
2. The method as claimed in claim 1, wherein the switching the shooting angle of view of the virtual camera to the overview angle of view and the shooting position of the virtual camera to be above the key object during browsing the virtual event activity scene based on the target navigation path comprises:
if the fact that the distance between the shooting position of the virtual camera and the key target object is smaller than or equal to a preset distance threshold value is detected, the shooting visual angle of the virtual camera is switched to be an overview visual angle, and the shooting position of the virtual camera is switched to be above the key target object.
3. The method as claimed in claim 1, wherein said decomposing layer by layer according to a preset time interval and displaying said three-dimensional virtual model comprises:
starting timing, and hiding a part of models corresponding to the highest layer of the three-dimensional virtual model when the timing duration reaches the preset time interval;
hiding a part of the model corresponding to the next highest layer of the three-dimensional virtual model when the timed duration reaches the preset time interval again; and repeatedly executing until the traversing is completed to complete the partial model corresponding to the whole hierarchy of the three-dimensional virtual model.
4. A method for navigating an event activity scene according to any of claims 1 to 3, wherein the three-dimensional virtual model comprises an outdoor virtual venue model; correspondingly, after the step of decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model, the method further comprises:
restoring the outdoor virtual stadium model before layer-by-layer decomposition;
and loading virtual animation of the athlete for moving on the playing field of the outdoor virtual stadium model, and loading the virtual animation of the athlete for watching the motion on the auditorium of the outdoor virtual stadium model.
5. A method for navigating an event activity scene according to any of claims 1 to 3, wherein the three-dimensional virtual model comprises an indoor virtual stadium model; correspondingly, the decomposing layer by layer according to the preset time interval and displaying the three-dimensional virtual model comprises the following steps:
hiding a roof model of the indoor virtual venue model, and switching the shooting position of the virtual camera to a preset height position above the highest layer of the indoor virtual venue model;
and in the process of decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model, keeping the preset height position relative to each layer unchanged, and switching and browsing the overview visual angles of other layers layer by layer.
6. The method for navigating scenes of an event activity according to claim 5, further comprising:
determining a target layer comprising a competition field in the process of browsing each layer by layer based on the overview viewing angle;
loading a virtual animation of a player playing a sport on a playing field in the target layer, and loading a virtual animation of a viewer watching the sport on a spectator seat in the target layer.
7. The method as claimed in claim 5, wherein the sections corresponding to the respective layers are displayed during the browsing of the layers layer by layer based on the overview perspective; correspondingly, the method further comprises the following steps:
acquiring user permission of a navigation user;
hiding the subarea which the navigation user does not have access to; wherein the partition comprises a registration partition and/or a running partition of the event activity.
8. An event activity scene navigation device, comprising:
the switching unit is used for switching the shooting visual angle of the virtual camera to the overview visual angle and switching the shooting position of the virtual camera to be above the key target object in the process of browsing the virtual event activity scene based on the target navigation path; the key target object is a three-dimensional virtual model which is pre-established in the virtual event activity scene and comprises a layered structure;
and the display unit is used for decomposing layer by layer according to a preset time interval and displaying the three-dimensional virtual model in the process of browsing the key target object based on the overview visual angle at the position of the upper part.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 7 are implemented when the computer program is executed by the processor.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 7.
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