CN111143709B - Revocation method and device in 3D map scene - Google Patents
Revocation method and device in 3D map scene Download PDFInfo
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- CN111143709B CN111143709B CN201911308726.0A CN201911308726A CN111143709B CN 111143709 B CN111143709 B CN 111143709B CN 201911308726 A CN201911308726 A CN 201911308726A CN 111143709 B CN111143709 B CN 111143709B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/953—Querying, e.g. by the use of web search engines
- G06F16/9537—Spatial or temporal dependent retrieval, e.g. spatiotemporal queries
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/953—Querying, e.g. by the use of web search engines
- G06F16/9538—Presentation of query results
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/90—Details of database functions independent of the retrieved data types
- G06F16/95—Retrieval from the web
- G06F16/957—Browsing optimisation, e.g. caching or content distillation
- G06F16/9577—Optimising the visualization of content, e.g. distillation of HTML documents
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
- G06T17/05—Geographic models
Abstract
The embodiment of the invention provides a revocation method and device in a 3D map scene, which are applied to a 3D map model taking 3D earth as a bottom scene. The method comprises the steps of establishing a coordinate point information linked list for receiving coordinate point information; when the change of the coordinate point information is finished, acquiring the coordinate point information at the end of the change, and storing the coordinate point information in the coordinate point information linked list according to the acquired sequence; and when receiving a withdrawal instruction, taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped, and skipping to the coordinate point to be skipped through an API provided by a 3D map engine. In this way, the user can be supported to return to the previous coordinate point in the 3D map scene, and the historical information can be checked by returning to the previous level, so that the exposure rate of the information is enhanced, and the use experience of browsing the information by the user is improved.
Description
Technical Field
Embodiments of the present invention relate generally to the field of software applications and, more particularly, to a revocation method and apparatus in a 3D map scenario.
Background
The 3D earth map is an electronic map in which a software developer displays geographic information to a user by taking the earth as a model. In order to improve the experience of the user, the software developer can display information labels related to some geographic positions to the user in a 3D (three-dimensional) terrestrial map scene. The information labels related to the geographic positions often need to be customized by developers to obtain labels, wherein the labels correspond to coordinate points of a certain geographic position on a 3D earth map, and the labels can contain any graphic information and UI interface patterns. Therefore, when the user manipulates the 3D earth model, coordinate point information included in the user viewing angle displayed by the 3D earth model also changes, and correspondingly, the 3D earth model displays changed markers, so that the user can browse related information labels.
However, the 3D global map in the prior art cannot allow the user to return to view the related information labels of the previous coordinate points, so that the use experience of the user is easily reduced through the existing 3D global map.
Disclosure of Invention
According to the embodiment of the invention, a revocation method and device in a 3D map scene are provided. The method and the device support the user to return to the previous coordinate point in the map scene taking the 3D earth as the bottom layer scene, and can check the historical information by returning to the previous level, so that the exposure rate of the information is enhanced, and the use experience of the user is improved.
In a first aspect of the invention, a revocation method in a 3D map scenario is provided. The method is applied to a 3D map model taking 3D earth as a bottom scene, and comprises the following steps:
establishing a coordinate point information linked list for receiving coordinate point information;
when the change of the coordinate point information is finished, acquiring the coordinate point information at the end of the change, and storing the coordinate point information in the coordinate point information linked list according to the acquired sequence;
and when receiving a withdrawal instruction, taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped, and skipping to the coordinate point information to be skipped through an API provided by a 3D map engine.
According to the technical scheme, the coordinate point information of the previous operation stored in the coordinate point information linked list is returned, and the position is jumped to the previous operation, so that a user can return to the previous operation when operating in the map with the 3D earth model as the bottom scene. Because the coordinate point information can change in each operation and the labels corresponding to the coordinate points correspondingly change, when the previous operation is returned, the user can check the information labels in the previous operation, the exposure rate of the information is increased, and the use experience of the user for an operation interface is improved.
Further, the coordinate point information change comprises longitude and latitude change and/or altitude change of a coordinate point of the 3D map.
Further, the step of using the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as the coordinate point information to be skipped includes:
reading the previous coordinate point information of the current coordinate point information from the coordinate point information linked list as the coordinate point information to be skipped, or
And deleting the current coordinate point information from the coordinate point information linked list, so that the previous coordinate point information of the coordinate point information is used as the coordinate point information to be skipped.
Further, the coordinate point information includes longitude and latitude information and altitude information of the coordinate point.
Further, the API provided by the 3D map engine jumps to the coordinate point to be jumped, and then the method further comprises the following steps:
and taking the jumped coordinate point as a central coordinate point, presenting the jumped page, and displaying the label corresponding to the coordinate point in the jumped page.
In a second aspect of the invention, a revocation apparatus in a 3D map scenario is provided. The device loads a 3D map model taking 3D earth as a bottom layer scene, and the device comprises:
the building module is used for building a coordinate point information linked list;
the storage module is used for storing the coordinate point information at the end of the change in the coordinate point information linked list when the change of the coordinate point information is ended; the coordinate point information linked list is used for storing coordinate point information according to the receiving sequence;
and the revocation module is used for taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped when receiving a revocation instruction, and performing position skipping through an API (application program interface) provided by the 3D map engine.
Further, the coordinate point information change comprises longitude and latitude change and/or altitude change of a coordinate point of the 3D map.
Further, the revocation module is configured to read, from the coordinate point information linked list, information of a coordinate point previous to the current coordinate point information as information of a coordinate point to be skipped; or (b)
And deleting the current coordinate point information from the coordinate point information linked list, so that the coordinate point information before the coordinate point information is used as the coordinate point information to be skipped.
Further, the coordinate point information includes longitude and latitude information and altitude information of the coordinate point.
Further, the display module is used for presenting the page after the jump by taking the coordinate point after the jump as a central coordinate point and displaying the label corresponding to the coordinate point in the page after the jump.
It should be understood that the description in this summary is not intended to limit the critical or essential features of the embodiments of the invention, nor is it intended to limit the scope of the invention. Other features of the present invention will become apparent from the description that follows.
According to the invention, the coordinate point information of the previous operation stored in the coordinate point information linked list is returned, and the position jump is carried out, so that the 3D earth is used as a bottom scene to support a user to return the previous coordinate point, and the historical information can be checked through returning to the previous level, thereby enhancing the exposure rate of the information and improving the use experience of the user for browsing the information.
Drawings
The above and other features, advantages and aspects of embodiments of the present invention will become more apparent by reference to the following detailed description when taken in conjunction with the accompanying drawings. In the drawings, wherein like or similar reference numerals denote like or similar elements, in which:
fig. 1 shows a flowchart of a revocation method in a 3D map scenario according to an embodiment of the present invention;
fig. 2 shows a block diagram of a revocation apparatus in a 3D map scenario according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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.
In addition, the term "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
According to the invention, the coordinate point information of the previous operation stored in the coordinate point information linked list is returned, and the position jump is carried out, so that a map supporting user taking the 3D earth model as a bottom scene carries out the operation of returning to the previous coordinate point, and the historical information can be checked by returning to the previous level, thereby enhancing the exposure rate of the information and improving the use experience of the user for browsing the information.
Fig. 1 shows a flowchart of a revocation method in a 3D map scene of an embodiment of the present invention.
The method comprises the following steps:
s101, establishing a coordinate point information linked list for receiving the coordinate point information.
And returning to the last coordinate point information when receiving the withdrawal instruction through the coordinate point information linked list, so that a user returns to the 3D map model view corresponding to the coordinate point of the previous operation, and checking the label information corresponding to the coordinate point under the view.
Each view of the 3D map scene corresponds to a uniquely determined coordinate point. The coordinate point information includes longitude and latitude information and altitude information of the coordinate point. For example, longitude and latitude information corresponding to the coordinates of the center point of the view is used as longitude and latitude information of the corresponding unique coordinate point, and altitude information of the coordinates of the center point of the current view is used as the corresponding unique sitting positionPunctuation height information. The altitude information is used for representing altitude information at the corresponding coordinate point position. Setting a minimum height, denoted as H, in a 3D map scene 0 Representing an altitude of 0. The height information of a certain coordinate point is the difference between the height of the coordinate point and the minimum height.
And S102, when the change of the coordinate point information is finished, storing the coordinate point information at the end of the change in the coordinate point information linked list, and storing the coordinate point information in the coordinate point information linked list according to the receiving sequence.
The coordinate point information change includes three cases: the coordinate point of the 3D map changes in longitude and latitude, the coordinate point of the 3D map changes in height, and the coordinate point of the 3D map changes in longitude and latitude as well as in height.
The coordinate point information includes longitude and latitude information and altitude information of the coordinate point. The position of the coordinate point of the 3D map changes to cause the longitude and latitude information in the coordinate point information to change, and the height information in the coordinate point information changes by scaling the 3D map.
And the user operates the 3D map model, controls the change of the coordinate point information, and when the user operation is finished, the change of the current coordinate point information is finished, at the moment, the current coordinate point is corresponding, and the coordinate point information is stored in a coordinate point information linked list to be used as the current coordinate point information.
In the process of changing the coordinate points, the coordinate point information continuously changes along with the changing process, and in the process, the 3D map model continuously receives the changing information of the coordinate points.
As one embodiment of the present invention, a time threshold is set, for example, 1 second; when the coordinate point information received by the 3D map model is not changed any more and a time threshold value is passed for 1 second from the moment of no more change, judging that the current coordinate point is the changed coordinate point, namely, ending the current user operation; the coordinate point information is stored in a coordinate point information linked list.
As an embodiment of the present invention, the coordinate point information linked list may be a data structure table in a stack form, and the coordinate point information is stored in the stack according to the order of reception following the first-in last-out principle. And according to the principle of first-in and last-out, the information of the last coordinate point stored in the linked list is first popped off, so that a user can inquire information corresponding to a label of the current coordinate point.
As another embodiment of the present invention, the coordinate point information linked list may be an information linked list composed of coordinate point information stored in the order of reception, that is, the previous coordinate point information of each coordinate point information is the coordinate point of the previous operation corresponding to the current coordinate point. Therefore, when a withdrawal instruction is received according to the sequence of the coordinate point information, the previous coordinate point information of the current coordinate point information is read and used as the coordinate point information to be skipped, and then position skipping is carried out, so that the user can check the information corresponding to the label marker of the previous level by returning.
Through the corresponding relation between the coordinate point position and the scaling change of the 3D map and the coordinate point information, the corresponding relation between the user operation and the model data can be established, so that when the user performs the cancel operation or returns to the previous operation, the previous coordinate point information can be correspondingly read as the coordinate point information to be skipped, and the position is skipped.
And S103, when receiving a withdrawal instruction, taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped, and performing position skipping through an API provided by the 3D map engine.
The step of using the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as the coordinate point information to be skipped includes: and reading the previous coordinate point information of the current coordinate point information from the coordinate point information linked list to serve as the coordinate point information to be skipped, or deleting the current coordinate point information from the coordinate point information linked list to enable the previous coordinate point information of the coordinate point information to serve as the coordinate point information to be skipped.
And reading the previous coordinate point information of the current coordinate point by the 3D map model through the response to the user withdrawal. Undoing includes clicking "back", clicking "undo", double pointing to swipe left, etc. And the user transfers the process by withdrawing, so that the visual angle jumps to the previous coordinate point and the marker under the view corresponding to the coordinate point is presented. The user can conveniently check the information corresponding to the marker in the previous operation position and the corresponding view.
In the 3D map scene, if the received revocation instruction of the user is an information linked list composed of coordinate point information, and the coordinate point information is stored according to the received sequence, the user performs instruction control on the model through the revocation operation, the model receives the revocation instruction, reads longitude and latitude information and altitude information of a previous coordinate point from the coordinate point information linked list, and performs position jump according to the read longitude and latitude information and altitude information through an API provided by the 3D map engine. The implementation mode does not need to delete coordinate point information in the coordinate point information linked list, ensures the integrity of the information in the linked list, and enables a user to jump to the next level through 'forward' after returning to the previous level.
In the 3D map scene, if the received revocation instruction of the user is a data structure table in a stack form, and the coordinate point information is stored in the stack according to the received sequence following the principle of first-in last-out, the user performs instruction control on the model through the revocation operation, the model receives the revocation instruction, and deletes the current coordinate point information from the coordinate point information linked list, namely, takes longitude and latitude information and altitude information of a previous coordinate point as longitude and latitude information and altitude information of a coordinate point to be skipped, and performs position skip through an API provided by the 3D map engine. According to the embodiment, the information of the previous coordinate point is not required to be read, the previous coordinate point is made to be the current coordinate point directly through the mode of deleting the information of the current coordinate point in the linked list, and position jump is carried out through an API provided by the 3D map engine. The 3D map engine makes a position jump by calling ArcGIS Runtime SDK functions.
According to the embodiment of the invention, the 3D earth support user can return to the previous coordinate point, and the historical information can be checked by returning to the previous level, so that the exposure rate of the information is enhanced, and the use experience of browsing the information by the user is improved.
Further, the API provided by the 3D map engine jumps to the coordinate point to be jumped, and then the method further comprises the following steps: and taking the jumped coordinate point as a central coordinate point, presenting the jumped page, and displaying the label corresponding to the coordinate point in the jumped page.
Taking the height information of the coordinate point after the jump as the basis of the page presentation range after the jump, namely taking the initial height H as the basis of the page presentation hemispherical model, and taking the basis of the basis according to the proportional relation between the height information H of the coordinate point after the jump and the initial height H, namely
Wherein N is the scale of page scaling, H is the height information of coordinate point after jump, H is the initial height information, H 0 The minimum height is the height of a coordinate point corresponding to the lowest elevation point in the 3D map model.
Scaling the range of the presented page to obtain the range of the earth model presented by the page corresponding to the coordinate point after the jump; and taking longitude and latitude information of the jumped coordinate point as the center point coordinate of the jumped page, thereby obtaining the jumped page. And displaying the label corresponding to the coordinate point contained in the page after the jump. As an embodiment, labels corresponding to all coordinate points included in the page after the jump may be displayed; as another embodiment, a label corresponding to a partial coordinate point included in the page after the jump may also be displayed.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are alternative embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
The above description of the method embodiments further describes the solution of the present invention by means of device embodiments.
Fig. 2 shows a block diagram of a revocation apparatus 200 in a 3D map scenario, according to an embodiment of the present invention. As shown in fig. 2, the apparatus 200 loads a 3D map model of a 3D earth-based scene, including:
the establishing module 201 is configured to establish a coordinate point information linked list, where the coordinate point information linked list is used to store coordinate point information according to the receiving sequence.
The coordinate point information linked list is established by the establishing module 201, so that when a withdrawal instruction is received, the last coordinate point information can be returned, and the user can return to the coordinate point of the previous operation for checking marker information.
As an embodiment of the present invention, the coordinate point information linked list established by the establishing module 201 may be a data structure table in a stack form, and the coordinate point information is stored in the stack according to the received order following the first-in last-out principle. And according to the principle of first-in and last-out, the information of the last coordinate point stored in the linked list is first popped off, so that a user can inquire the marker information of the current coordinate point.
As another embodiment of the present invention, the coordinate point information linked list established by the establishing module 201 may also be an information linked list composed of coordinate point information, where the coordinate point information is stored according to the receiving order, that is, the previous coordinate point information of each coordinate point information is the coordinate point of the previous operation corresponding to the current coordinate point. Therefore, when a withdrawal instruction is received according to the sequence of the coordinate point information, the previous coordinate point information of the current coordinate point information is read and used as the coordinate point information to be skipped, and then position skipping is carried out, so that a user can check marker information of the previous level by returning.
And the storage module 202 is configured to store, when the change of the coordinate point information is finished, the coordinate point information at the end of the change in the coordinate point information linked list.
The coordinate point information change includes three cases: the position of the coordinate point of the 3D map changes, the coordinate point of the 3D map changes in a zooming manner, and the coordinate point of the 3D map changes in both a position and a zooming manner.
The coordinate point information includes latitude and longitude information and altitude information of the coordinate point. The position change of the coordinate points of the 3D map causes the longitude and latitude information in the coordinate point information to change, and the scaling change of the coordinate points of the 3D map causes the sea-tangle information in the coordinate point information to change.
The user operates the 3D map model, controls the change of the coordinate point information, and when the user operation is finished, the change of the current sub-coordinate point information is finished, and at the moment, the storage module 202 stores the coordinate point information in a coordinate point information linked list as the current coordinate point information.
Through the corresponding relation between the coordinate point position and the scaling change of the 3D map and the coordinate point information, the corresponding relation between the user operation and the model data can be established, so that when the user performs the cancel operation or returns to the previous operation, the previous coordinate point information can be correspondingly read as the coordinate point information to be skipped, and the position is skipped.
And the revocation module 203 is configured to, when receiving a revocation instruction, skip a position of a coordinate point information previous to the current coordinate point information in the coordinate point information linked list through an API provided by the 3D map engine.
And the revocation module is used for reading the previous coordinate point information of the current coordinate point information from the coordinate point information linked list as coordinate point information to be skipped or deleting the current coordinate point information from the coordinate point information linked list so that the previous coordinate point information of the coordinate point information is used as the coordinate point information to be skipped.
As an embodiment of the present invention, in a 3D map scenario, if the received revocation instruction of the user is an information linked list composed of coordinate point information, and the coordinate point information is stored according to the received sequence, the user performs instruction control on the model through the revocation operation, and the revocation module 203 receives the revocation instruction, reads latitude and longitude information and altitude information of a previous coordinate point from the coordinate point information linked list, and performs position jump according to the read latitude and longitude information and altitude information through an API provided by the 3D map engine. The implementation mode does not need to delete coordinate point information in the coordinate point information linked list, ensures the integrity of the information in the linked list, and enables a user to jump to the next level through 'forward' after returning to the previous level.
As another embodiment of the present invention, in a 3D map scenario, if the received revocation instruction of the user is a data structure table in a stack form, and if the coordinate point information linked list follows the first-in last-out principle, the coordinate point information is stored in the stack according to the received sequence, the user performs instruction control on the model through the revocation operation, and the revocation module 203 receives the revocation instruction and deletes the current coordinate point information from the coordinate point information linked list, that is, uses the latitude and longitude information and altitude information of the previous coordinate point as the latitude and longitude information and altitude information of the coordinate point to be skipped, and performs position skipping through the API provided by the 3D map engine. According to the embodiment, the information of the previous coordinate point is not required to be read, the previous coordinate point is made to be the current coordinate point directly through the mode of deleting the information of the current coordinate point in the linked list, and position jump is carried out through an API provided by the 3D map engine.
According to the invention, the coordinate point information of the previous operation stored in the coordinate point information linked list is returned, and the position jump is carried out, so that the 3D earth is used as a bottom scene to support a user to return the previous coordinate point, and the historical information can be checked through returning to the previous level, thereby enhancing the exposure rate of the information and improving the use experience of the user for browsing the information.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the described modules may refer to corresponding procedures in the foregoing method embodiments, which are not described herein again.
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 example forms of implementing the claims.
Claims (9)
1. The revocation method in the 3D map scene is applied to the map taking the 3D earth model as the bottom scene, and is characterized by comprising the following steps:
establishing a coordinate point information linked list for receiving coordinate point information;
when the change of the coordinate point information is finished, acquiring the coordinate point information at the end of the change, and storing the coordinate point information in the coordinate point information linked list according to the acquired sequence; the end of the change of the coordinate point information comprises the step of judging that the current coordinate point is the changed coordinate point when the coordinate point information received by the 3D map model is not changed any more and a preset time threshold value is passed from the moment of no more change;
when a withdrawal instruction is received, taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped, and skipping to the coordinate point to be skipped through an API provided by a 3D map engine; the revocation includes a single click return, a single click revocation, a double finger left sweep operation;
taking the jumped coordinate point as a central coordinate point, presenting a jumped page, and displaying a label corresponding to the coordinate point in the jumped page;
taking the height information of the coordinate point after the jump as the basis of the page presenting range after the jump, namely, presenting a hemispherical model by using the page corresponding to the initial height H, and taking the hemispherical model as the basis according to the proportional relation between the height information H of the coordinate point after the jump and the initial height H, namely:
，
wherein N is the scale of page scaling, H is the height information of coordinate point after jump, H is the initial height information, H 0 The minimum height is the height of a coordinate point corresponding to the lowest elevation point in the 3D map model.
2. The method according to claim 1, wherein the coordinate point information change comprises a longitude and latitude change and/or a height change of a coordinate point of a 3D map.
3. The method according to claim 1, wherein the step of using the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as the coordinate point information to be skipped includes:
reading the previous coordinate point information of the current coordinate point information from the coordinate point information linked list as the coordinate point information to be skipped, or
And deleting the current coordinate point information from the coordinate point information linked list, so that the previous coordinate point information of the coordinate point information is used as the coordinate point information to be skipped.
4. A method according to any one of claims 1 to 3, wherein the coordinate point information includes latitude and longitude information and altitude information of a coordinate point.
5. A revocation apparatus in a 3D map scene, loading a 3D map model of a 3D earth-based scene, comprising:
the establishing module is used for establishing a coordinate point information linked list,
the storage module is used for storing coordinate point information at the end of the change in the coordinate point information linked list when the change in the coordinate point information is ended, and the coordinate point information linked list is used for storing the coordinate point information according to the receiving sequence; the end of the change of the coordinate point information comprises the step of judging that the current coordinate point is the changed coordinate point when the coordinate point information received by the 3D map model is not changed any more and a preset time threshold value is passed from the moment of no more change;
the revocation module is used for taking the previous coordinate point information of the current coordinate point information in the coordinate point information linked list as coordinate point information to be skipped when a revocation instruction is received, and skipping to the coordinate point information to be skipped through an API provided by the 3D map engine; the revocation includes a single click return, a single click revocation, a double finger left sweep operation; taking the jumped coordinate point as a central coordinate point, presenting a jumped page, and displaying a label corresponding to the coordinate point in the jumped page; taking the height information of the coordinate point after the jump as the basis of the page presenting range after the jump, namely, presenting a hemispherical model by using the page corresponding to the initial height H, and taking the hemispherical model as the basis according to the proportional relation between the height information H of the coordinate point after the jump and the initial height H, namely:
wherein N is the scale of page scaling, H is the height information of coordinate points after jump, H is the initial height information, and H0 is the minimum height, namely the height of the coordinate point corresponding to the lowest elevation point in the 3D map model.
6. The apparatus of claim 5, wherein the coordinate point information changes include changes in longitude and latitude and/or changes in altitude of coordinate points of a 3D map.
7. The apparatus of claim 5, wherein the revocation module is configured to read, from the coordinate point information linked list, previous coordinate point information of current coordinate point information as coordinate point information to be skipped; or (b)
And deleting the current coordinate point information from the coordinate point information linked list, so that the coordinate point information before the coordinate point information is used as the coordinate point information to be skipped.
8. The apparatus according to any one of claims 5 to 7, wherein the coordinate point information includes latitude and longitude information and altitude information of a coordinate point.
9. The device according to claim 5 or 7, comprising a display module, configured to take the jumped coordinate point as a central coordinate point, present the jumped page, and display a label corresponding to the coordinate point in the jumped page.
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| CN201911308726.0A CN111143709B (en) | 2019-12-18 | 2019-12-18 | Revocation method and device in 3D map scene |
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