CN111177598A - Geographic position jumping method - Google Patents

Geographic position jumping method Download PDF

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Publication number
CN111177598A
CN111177598A CN201911365219.0A CN201911365219A CN111177598A CN 111177598 A CN111177598 A CN 111177598A CN 201911365219 A CN201911365219 A CN 201911365219A CN 111177598 A CN111177598 A CN 111177598A
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coordinate point
earth model
information
jumped
height
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CN111177598B (en
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王珑
陆川
周舒婷
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Shenzhen Chaospatiotemporal Exploration Technology Co ltd
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Chengdu Star Age Aerospace Technology Co ltd
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    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/90Details of database functions independent of the retrieved data types
    • G06F16/95Retrieval from the web
    • G06F16/955Retrieval from the web using information identifiers, e.g. uniform resource locators [URL]
    • G06F16/9558Details of hyperlinks; Management of linked annotations
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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Abstract

The embodiment of the invention provides a geographic position jumping method, which comprises the steps that an initial height and a plurality of target coordinate points are preset in a 3D earth model, each target coordinate point comprises height information, longitude information and latitude information, the height of each target coordinate point is the same as the preset initial height, and at least one of the longitude information and the latitude information is different; when the 3D earth model receives a refreshing instruction, one target coordinate point is randomly selected from the preset target coordinate points to serve as a coordinate point to be jumped, and the 3D earth model jumps to the coordinate point to be jumped through an API (application program interface) provided by a 3D earth engine. In this way, skipping can be performed through presetting a plurality of target coordinate points, so that a user can display different information labels when refreshing the 3D earth model, the exposure rate of information is increased, the interestingness of live broadcast earth use is enhanced, and user experience is optimized.

Description

Geographic position jumping method
Technical Field
Embodiments of the present invention relate generally to the field of electronics and information technology, and more particularly, to a geographic location jump method.
Background
In the prior art, a live broadcast earth APP (Application) is an information display platform using a 3D earth model as a bottom scene, and in order to expand more functions of a live broadcast earth, an information tag related to a geographic position is also displayed to a user on the live broadcast earth model, and the longitude and latitude of the geographic position of an information place related to the information tag on the earth are consistent with the longitude and latitude of the information tag related to the live broadcast earth model. Since the information is mainly concentrated in the region with dense human activities (such as seven continents), in the process of manually operating the 3D earth model by the user, the latitude and longitude range included in the viewing angle displayed by the 3D earth model changes along with the operation of the user, so that the information label displayed by the 3D earth model also changes along with the operation of the user, and the user can view the information labels of different geographic positions by operating the 3D earth model. Therefore, if a user wants to look at information tags in different geographic locations, the user must continuously manually operate the 3D earth model, but such an operation method is prone to fatigue of the user, and thus the user is not interested in the application program, and the user experience is reduced.
Disclosure of Invention
According to an embodiment of the present invention, a geographic location hopping scheme is provided. The jumping is carried out by presetting a plurality of target coordinate points, so that a user can jump to different places randomly when refreshing the 3D earth model, thereby increasing the exposure rate of information, enhancing the interest of using the live broadcast earth and optimizing the user experience.
In a first aspect of the invention, a geographic location jump method is provided. The method is applied to an information display platform with a 3D earth model as a bottom scene, and comprises the following steps:
presetting an initial height and a plurality of target coordinate points in the 3D earth model, wherein each target coordinate point comprises height information, longitude information and latitude information, the height of each target coordinate point is the same as the preset initial height, and at least one of the longitude information and the latitude information is different;
when the 3D earth model receives a refreshing instruction, one target coordinate point is randomly selected from the preset target coordinate points to serve as a coordinate point to be jumped, and the 3D earth model jumps to the coordinate point to be jumped through an API (application program interface) provided by a 3D earth engine.
When the 3D earth model receives a refreshing instruction, randomly selecting a target coordinate point from the preset target coordinate points as a coordinate point to be jumped;
determining a coordinate point corresponding to a current view displayed by the 3D earth model, and judging; and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is the same as the initial height, jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth model engine along a first jumping path.
Further, when the 3D earth model receives a refreshing instruction, a target coordinate point is randomly selected from the preset target coordinate points to serve as a coordinate point to be jumped;
determining a coordinate point corresponding to a current view displayed by the 3D earth model, and judging; and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is different from the initial height, jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth model engine along a second jump path.
Further, determining a coordinate point corresponding to a current view presented by the 3D earth model includes:
acquiring a longitude and latitude range included in a current view displayed by the 3D earth model;
according to the longitude and latitude range included in the current view displayed by the 3D earth model, calculating a central coordinate point in the longitude and latitude range included in the current view displayed by the 3D earth model;
and taking the central coordinate point of the current displayed view of the 3D earth model obtained by calculation as a coordinate point corresponding to the current view.
Further, the first jumping path is a spherical shortest path from a coordinate point corresponding to the current view to the selected coordinate point to be jumped.
Further, the second jump path is a path from the first path to the second path;
the first path is a shortest path from a coordinate point corresponding to a current view shown by the 3D earth model to a transition coordinate point, and the second path is a spherical shortest path from the transition coordinate point to the selected coordinate point to be jumped.
And the longitude and latitude of the transit coordinate point is the same as the longitude and latitude of the coordinate point corresponding to the current view displayed by the 3D earth model, and the height is equal to the initial height.
Further, if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is different from the initial height, jumping to the coordinate point to be jumped through an API provided by a 3D earth model engine along the second jump path includes:
performing position skipping along the second skipping path according to a specified skipping time through an API (application programming interface) provided by the 3D map engine; wherein the specified jump time is T:
Figure BDA0002338226090000031
wherein H is a preset initial height; h0Is a preset minimum height; h is the height of a coordinate point corresponding to a certain view in the 3D earth model, and H0H is less than H; t is the time to jump from the coordinate point whose height is the minimum height to the coordinate point whose height is the initial height.
Further, after the 3D earth model is adjusted to the coordinate point to be jumped, the 3D earth model simultaneously displays the information label in the view range corresponding to the jumped coordinate point.
Further, after the 3D earth model jumps to treat the coordinate point that jumps, the 3D earth model shows the information label in the coordinate point corresponding page range after jumping simultaneously, include:
according to the longitude information and the latitude information of the coordinate point to be jumped, determining a longitude and latitude range included in the view required to be displayed after the 3D earth model is jumped, wherein the center of the longitude and latitude range included in the view required to be displayed after the 3D earth model is jumped is the coordinate point to be jumped;
and acquiring and displaying information labels in the longitude and latitude range included by the views displayed after the 3D earth model jumps according to the determined longitude and latitude range included by the views required to be displayed after the 3D earth model jumps.
Further, if the number of the information tags in the page range corresponding to the coordinate point after the jump exceeds a threshold value, displaying the threshold value information tags in the page range;
and if the number of the information tags in the display page range corresponding to the jumping coordinate point does not exceed the threshold value, all the information tags in the display page range corresponding to the jumping coordinate point are displayed.
It should be understood that the statements herein reciting aspects are not intended to limit the critical or essential features of any embodiment of the invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.
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The above and other features, advantages and aspects of various embodiments of the present invention will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, like or similar reference characters designate like or similar elements, and wherein:
fig. 1 shows a flowchart of a geographical location jump method according to an embodiment of the 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
According to the invention, the target coordinate points are preset for jumping, so that a user can jump to different places randomly when refreshing the 3D earth model, the exposure rate of information is increased, the interestingness of live broadcast earth use is enhanced, and the user experience is optimized.
Fig. 1 shows a flowchart of a geographical location jump method according to an embodiment of the present invention.
The method is applied to an information display platform with a 3D earth model as a bottom scene, and comprises the following steps:
s101, presetting an initial height and a plurality of target coordinate points in the 3D earth model,
each target coordinate point comprises altitude information, longitude information and latitude information, the altitude of each target coordinate point is the same as the preset initial altitude, and at least one of the longitude information and the latitude information is different.
The preset target coordinate points aim to randomly jump to different coordinate points when a user refreshes the 3D earth model, so that the latitude and longitude ranges of the displayed view angle after the 3D earth model jumps are different, the exposure rate of information is increased, the interest of the live broadcast earth is enhanced, and the user experience is optimized.
Because at least one of the longitude information and the latitude information of each target coordinate point is different, when a user clicks the refreshing function of the 3D earth model each time and the 3D earth model jumps to one of the target places, the latitude and longitude ranges displayed on the page corresponding to the target place are different, and therefore the information tags displayed on the 3D earth model are different when the user clicks the refreshing function each time. And the height of each target coordinate point is also the same as the preset initial height, so that when a user clicks a refreshing function, the latitude and longitude range included in the visual angle displayed on the 3D earth model is the largest, and the number of label data displayed on the 3D earth model after each refreshing can be the largest. By the method provided by the embodiment, the exposure rate of the information is increased, the interest of the live broadcast earth is enhanced, and the user experience is optimized.
The preset initial height may be set at random, for example, the preset initial height may be a height at which a range of latitude and longitude included in a viewing angle for the 3D earth model to be displayed at the same time is the largest. Because the 3D earth model is a sphere, when the range of the longitude and latitude included in the perspective displayed by the 3D earth model at the same time is the largest, the longitude and latitude included in the perspective displayed by the 3D earth model at the same time is exactly half of the longitude and latitude included in the entire 3D earth model.
It should be noted that the longitude information and the latitude information are used to describe the longitude and latitude of the target coordinate point in the 3D earth model, and the altitude information is used to describe the altitude information of the target coordinate point in the 3D earth model. The heights of the target coordinate points are all the same and are all equal to the preset initial height. That is, when the 3D earth model jumps to one of the target coordinate points, the 3D earth model can jump to different target coordinate points at the same height, and the view corresponding to the coordinate point and the information label under the view are displayed.
As an embodiment of the present invention, at least one of the longitude information and the latitude information is different, and in a first possible embodiment, the longitude information and the latitude information of the target coordinate point are different and the latitude information is the same; for example, 3 target coordinate points are preset: a first target coordinate point (east longitude 58 degrees and north latitude 36 degrees), a second target coordinate point (east longitude 23 degrees and north latitude 36 degrees), and a third target coordinate point (east longitude 27 degrees and north latitude 52 degrees), wherein the latitude information of the first target coordinate point is the same as that of the second target coordinate point, but the longitude information is different; the longitude information and the latitude information of the third target coordinate point are different from those of the first target coordinate point and the second target coordinate point.
As an embodiment of the present invention, in a second possible embodiment, longitude information of the target coordinate points is the same, and latitude information is different; for example, 4 target coordinate points are preset: the coordinate system comprises a first target coordinate point (east longitude 58 degrees and north latitude 42 degrees), a second target coordinate point (east longitude 58 degrees and north latitude 36 degrees), a third target coordinate point (east longitude 27 degrees and north latitude 52 degrees) and a fourth target coordinate point (west longitude 12 degrees and south latitude 22 degrees), wherein the latitude information of the first target coordinate point is different from that of the second target coordinate point, but the longitude information is the same; the longitude information and the latitude information of the third target coordinate point and the fourth target coordinate point are different from those of the first target coordinate point and the second target coordinate point.
As an embodiment of the present invention, in a third possible embodiment, longitude information and latitude information of the target coordinate point are different; for example, 5 target coordinate points are preset: the longitude information and the latitude information of the five target coordinate points are different from each other, namely a first target coordinate point (east longitude 51 degrees and north latitude 42 degrees), a second target coordinate point (east longitude 58 degrees and north latitude 36 degrees), a third target coordinate point (east longitude 27 degrees and north latitude 52 degrees), a fourth target coordinate point (west longitude 12 degrees and south latitude 22 degrees) and a fifth target coordinate point (west longitude 41 degrees and south latitude 32 degrees).
S102, when the 3D earth model receives a refreshing instruction, randomly selecting one target coordinate point from the preset target coordinate points as a coordinate point to be jumped, and jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth engine.
The user accessible clicks 3D earth model's refreshing function for 3D earth model can jump to different target location at random, even this target location is the same in 3D earth model's region, but the latitude and longitude scope that the visual angle that 3D earth model demonstrates includes is also different, therefore 3D earth model demonstrates information label marker also is different in same region, thereby through this implementation can increase the exposure rate of information, has optimized user experience.
It should be noted that, as an embodiment of the present invention, after the 3D earth model jumps to the coordinate point to be jumped, the center of the latitude and longitude range included in the view angle displayed by the 3D earth model is the target point after jumping. Further, when the 3D earth model receives a refresh instruction, it is further required to determine whether the height of the coordinate point corresponding to the current view displayed by the 3D earth model is the same as the initial height, and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is the same as the initial height, the 3D earth model jumps to the coordinate point to be jumped through an API provided by a 3D earth model engine along a first jump path.
And acquiring height information of a center point coordinate of the view corresponding to the received refreshing instruction, wherein the view center point coordinate corresponding to the received refreshing instruction is required to be acquired firstly. And calculating a central coordinate point in the longitude and latitude range included by the current view displayed by the 3D earth model by acquiring the longitude and latitude range included by the current view displayed by the 3D earth model, and taking the calculated central coordinate point of the view currently displayed by the 3D earth model as a coordinate point corresponding to the current view.
And comparing the height information of the coordinate point corresponding to the current view with preset initial height information, and if the height information of the coordinate point corresponding to the current view is the same as the preset initial height information, judging that the height of the coordinate point corresponding to the current view is the same as the initial height. For example, if the height of the coordinate point corresponding to the current view is 50 ten thousand kilometers, and the initial height is 50 ten thousand kilometers, the height of the coordinate point corresponding to the current view is the same as the initial height.
Further, when the 3D earth model receives a refresh command, if the height of the coordinate point corresponding to the current view is the same as the initial height, a target coordinate point is randomly selected from the preset target coordinate points to be used as a coordinate point to be jumped, and the 3D earth model jumps to the coordinate point to be jumped through an API (application program interface) provided by a 3D earth model engine along a first jump path.
As an embodiment of the present invention, the target coordinate points selected from the plurality of target coordinate points are selected in a random manner, and as a preferred embodiment, a principle that the selection of two adjacent target coordinate points is different may be supplemented to the random selection manner to optimize the scheme.
And the first jumping path is the shortest path from the coordinate point corresponding to the current view to the selected coordinate point of the target to be jumped. That is, when the height of the coordinate point corresponding to the current view is the same as the initial height, the path from the coordinate point corresponding to the current view to the selected target coordinate point exists only on the path on the same sphere on which the two coordinate points are located, i.e., the path does not involve a change in height, but involves only a change in longitude and latitude. At this time, the first jump path is a path formed by the shortest distance between the two coordinate points along the spherical surface.
Further, when the 3D earth model receives a refreshing instruction, a target coordinate point is randomly selected from the preset target coordinate points to serve as a coordinate point to be jumped; determining a coordinate point corresponding to a current view displayed by the 3D earth model, and judging; and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is different from the initial height, jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth model engine along a second jump path.
And acquiring height information of a center point coordinate of the view corresponding to the received refreshing instruction, wherein the view center point coordinate corresponding to the received refreshing instruction is required to be acquired firstly. And calculating a central coordinate point in the longitude and latitude range included by the current view displayed by the 3D earth model by acquiring the longitude and latitude range included by the current view displayed by the 3D earth model, and taking the calculated central coordinate point of the view currently displayed by the 3D earth model as a coordinate point corresponding to the current view.
And if the height information of the coordinate point corresponding to the current view is different from the preset initial height information, judging that the height of the coordinate point corresponding to the current view is different from the initial height. For example, if the height of the coordinate point corresponding to the current view is 35 ten thousand kilometers and the initial height is 50 ten thousand kilometers, the height of the coordinate point corresponding to the current view is different from the initial height.
Further, when the 3D earth model receives a refreshing instruction, if the height of the coordinate point corresponding to the current view is different from the initial height, a target coordinate point is randomly selected from the preset target coordinate points to be used as a coordinate point to be jumped, and the 3D earth model jumps to the coordinate point to be jumped through an API (application program interface) provided by a 3D earth model engine along a second jumping path.
As an embodiment of the present invention, the target coordinate points selected from the plurality of target coordinate points are selected in a random manner, and as a preferred embodiment, a principle that the selection of two adjacent target coordinate points is different may be supplemented to the random selection manner to optimize the scheme.
The second jump path is a path from the first path to the second path; that is, the second jump path includes a first path and a second path, a start point of the second jump path, that is, a coordinate point corresponding to the current view, is a start point of the first path, an end point of the first path is a relay coordinate point for connecting the start point of the second path, and an end point of the second path is an end point of the second jump path, that is, a selected target coordinate point. The first path is the shortest path from the coordinate point corresponding to the current view to the transit coordinate point.
As a preferred embodiment, the intermediate coordinate point may be a coordinate point with the same longitude and latitude as the corresponding coordinate point of the current view and the height equal to the initial height. For example, the coordinate point corresponding to the current view is (east longitude 36 °, north latitude 42 °, 20 ten thousand kilometers), since the preset initial height is 50 ten thousand kilometers, that is, the height of the coordinate point corresponding to the current view is different from the initial height, the coordinate point corresponding to the current view (east longitude 36 °, north latitude 42 °, 20 ten thousand kilometers) is used as the starting point of the second jump path and is also the starting point of the first path, and the transit coordinate point is (east longitude 36 °, north latitude 42 °, 50 ten thousand kilometers), so the first path is the shortest path from the coordinate point (east longitude 36 °, north latitude 42 °, 20 ten thousand kilometers) to the transit coordinate point (east longitude 36 °, north latitude 42 °, 50 ten thousand kilometers).
The second path is the shortest path from the transit coordinate point to the selected coordinate point to be jumped. As a preferred embodiment, the height of the transit coordinate point is the same as the preset initial height, but the longitude and latitude information is different from the longitude and latitude information of the coordinate point to be jumped. The second path only exists on the path on the same sphere where the two coordinate points are located, that is, the path does not involve changes in altitude, but involves changes in longitude and latitude. At this time, the second path is a path formed by the shortest distance between the transit coordinate point and the coordinate point to be jumped along the spherical surface. For example, a transit coordinate point (east longitude 36 °, north latitude 42 °, 50 ten thousand kilometers), a coordinate point to be skipped (east longitude 16 °, north latitude 23 °, 50 ten thousand kilometers), and a second path is a path formed by the shortest distance between the transit coordinate point (east longitude 36 °, north latitude 42 °, 50 ten thousand kilometers) and the coordinate point to be skipped (east longitude 16 °, north latitude 23 °, 50 ten thousand kilometers) with the same center of the circle and the radius of a spherical surface of 50 ten thousand kilometers.
As another preferred embodiment of the present invention, the second jump path is a line segment formed by a shortest distance, i.e., a straight-line distance, from a coordinate point corresponding to the current view to a coordinate point to be jumped. Therefore, the transfer coordinate point is a point on the line segment, and the first path and the second path are superposed with the line segment and form a second jump path together with the transfer coordinate point.
Further, position jumping is carried out through an API provided by the 3D map engine along the second jumping path according to the specified jumping time. The specified jump time T is:
Figure BDA0002338226090000111
wherein H is a preset initial height; h0The minimum height is the lowest height of the earth surface in the 3D earth model relative to the camera, namely the height of the corresponding coordinate point when the user continuously magnifies the view of the 3D earth model until the view is not magnified any more; h is the height of a coordinate point corresponding to a certain view in the 3D earth model, and H0H is less than H; t is the time to jump from the coordinate point whose height is the minimum height to the coordinate point whose height is the initial height.
As an embodiment of the present invention, the preset initial height H is 50km, and the preset minimum height H00km, h 25km, t 2 s; the jump time is calculated by the formula:
Figure BDA0002338226090000112
i.e. the jump time is 1 second.
Further, after the position is jumped, displaying an information label corresponding to the jumped coordinate point.
As an embodiment of the present invention, after the 3D earth model jumps to the coordinate point to be jumped, the 3D earth model simultaneously displays the information tag in the page range corresponding to the coordinate point after the jump, including:
determining a longitude and latitude range included by the view required to be displayed after the 3D earth model jumps according to longitude information and latitude information of the coordinate point to be jumped, wherein the center of the longitude and latitude range included by the view required to be displayed after the 3D earth model jumps is the coordinate point to be jumped;
and acquiring and displaying information labels in the longitude and latitude range included by the displayed views after the 3D earth model jumps after the jumping according to the longitude and latitude range included by the displayed views after the determined 3D earth model jumps.
It should be noted that, the information tag can be designed and customized by a developer according to information on a network, and is embedded into a 3D earth model, and the longitude and latitude of the geographic position related to the information tag on the earth are consistent with the longitude and latitude on the 3D earth model; or the 3D earth model can directly climb various information from the network, the information comprises information content and information titles, the occurrence place of the information is determined according to the information content, and the longitude and the latitude of the occurrence place of the information on the earth are determined according to the occurrence place of the information; determining the position of the information title to be displayed on the 3D earth model according to the longitude and latitude of the information place on the earth; wherein, the longitude and latitude of the information title at the displayed position of the 3D earth model are consistent with the longitude and latitude of the information generating place on the earth.
After the position is jumped, the information label information in the page range corresponding to the jumped coordinate point is displayed, and the information label information in the page range can be completely displayed.
As a preferred embodiment, after the position is jumped, a plurality of information tag information exists in the page range corresponding to the jumped coordinate point, and a part of the information tags are selected as display information tags to be displayed in the display page. For example, after the position is jumped, 14 information tag information are in the display page range corresponding to the jumped coordinate point, and the information tag information is too much and is overlapped with each other, so that the user cannot view the information tag information. At this time, 5 of the information tags are selected as display information tags to be displayed in the display page. An information tag threshold, such as 5, may also be preset. If the information of the information tags in the display page range corresponding to the jumping coordinate points exceeds the threshold value of the information tags, displaying the information tags with the threshold value of the information tags on the display page, namely only displaying the information of 5 information tags.
And if the information of the information tag in the display page range corresponding to the jumping coordinate point does not exceed the threshold value of the information tag, all the information tags are displayed. The problem of a plurality of information labels overlap in the area of adjacent longitude and latitude has been solved, make the information label in the area of adjacent longitude and latitude can be for the user of unblock demonstration, promote user experience.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the order of acts, as some steps may occur in other orders or concurrently in accordance with the invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are exemplary embodiments and that no single embodiment is necessarily required by the invention.
Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Claims (10)

1. A geographic position jumping method is applied to an information display platform taking a 3D earth model as a bottom scene, and is characterized by comprising the following steps:
presetting an initial height and a plurality of target coordinate points in the 3D earth model, wherein each target coordinate point comprises height information, longitude information and latitude information, the height of each target coordinate point is the same as the preset initial height, and at least one of the longitude information and the latitude information is different;
when the 3D earth model receives a refreshing instruction, one target coordinate point is randomly selected from the preset target coordinate points to serve as a coordinate point to be jumped, and the 3D earth model jumps to the coordinate point to be jumped through an API (application program interface) provided by a 3D earth engine.
2. The method according to claim 1, characterized in that when the 3D earth model receives a refresh command, a target coordinate point is randomly selected from the preset target coordinate points as a coordinate point to be jumped;
determining a coordinate point corresponding to a current view displayed by the 3D earth model, and judging; and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is the same as the initial height, jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth model engine along a first jumping path.
3. The method according to claim 1, characterized in that when the 3D earth model receives a refresh command, a target coordinate point is randomly selected from the preset target coordinate points as a coordinate point to be jumped;
determining a coordinate point corresponding to a current view displayed by the 3D earth model, and judging;
and if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is different from the initial height, jumping to the coordinate point to be jumped through an API (application programming interface) provided by a 3D earth model engine along a second jump path.
4. The method according to claim 2 or 3, wherein determining the coordinate point corresponding to the current view presented by the 3D earth model comprises:
acquiring a longitude and latitude range included in a current view displayed by the 3D earth model;
according to the longitude and latitude range included in the current view displayed by the 3D earth model, calculating a central coordinate point in the longitude and latitude range included in the current view displayed by the 3D earth model;
and taking the central coordinate point of the current displayed view of the 3D earth model obtained by calculation as a coordinate point corresponding to the current view.
5. The method according to claim 2, wherein the first jump path is a spherical shortest path from a coordinate point corresponding to a current view to the selected coordinate point to be jumped.
6. The method of claim 3, wherein the second jump path is a path from the first path to the second path;
the first path is a shortest path from a coordinate point corresponding to a current view shown by the 3D earth model to a transition coordinate point, and the second path is a spherical shortest path from the transition coordinate point to the selected coordinate point to be jumped.
And the longitude and latitude of the transit coordinate point is the same as the longitude and latitude of the coordinate point corresponding to the current view displayed by the 3D earth model, and the height is equal to the initial height.
7. The method according to claim 3, wherein if the height of the coordinate point corresponding to the current view displayed by the 3D earth model is different from the initial height, jumping to the coordinate point to be jumped through an API provided by a 3D earth model engine along the second jump path comprises:
performing position skipping along the second skipping path according to a specified skipping time through an API (application programming interface) provided by the 3D map engine; wherein the specified jump time is T:
Figure FDA0002338226080000021
wherein H is a preset initial height; h0Is a preset minimum height; h is the height of a coordinate point corresponding to a certain view in the 3D earth model, and H0H is less than H; t is the time to jump from the coordinate point whose height is the minimum height to the coordinate point whose height is the initial height.
8. The method according to any one of claims 1 to 3 and 7, wherein after the 3D earth model is adjusted to the coordinate point to be jumped, the 3D earth model simultaneously displays the information label in the view range corresponding to the jumped coordinate point.
9. The method as claimed in claim 8, wherein after the 3D earth model jumps to the coordinate point to be jumped, the 3D earth model simultaneously displays information tags within a page range corresponding to the jumped coordinate point, including:
according to the longitude information and the latitude information of the coordinate point to be jumped, determining a longitude and latitude range included in the view required to be displayed after the 3D earth model is jumped, wherein the center of the longitude and latitude range included in the view required to be displayed after the 3D earth model is jumped is the coordinate point to be jumped;
and acquiring and displaying information labels in the longitude and latitude range included by the views displayed after the 3D earth model jumps according to the determined longitude and latitude range included by the views required to be displayed after the 3D earth model jumps.
10. The method of claim 9, wherein if the number of information tags in the page range corresponding to the coordinate point after the jump exceeds a threshold value, displaying a threshold number of information tags in the page range;
and if the number of the information tags in the display page range corresponding to the jumping coordinate point does not exceed the threshold value, all the information tags in the display page range corresponding to the jumping coordinate point are displayed.
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