CN110728733A - System and method for drawing chart - Google Patents
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- CN110728733A CN110728733A CN201911001729.XA CN201911001729A CN110728733A CN 110728733 A CN110728733 A CN 110728733A CN 201911001729 A CN201911001729 A CN 201911001729A CN 110728733 A CN110728733 A CN 110728733A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
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Abstract
The embodiment discloses a system and a method for drawing a navigation chart, wherein the system comprises: the canvas is used as a bottom layer module of the graphic container, a middle layer module with at least one functional module arranged and a data management module comprising a plurality of data processing algorithms packaged in advance, and the data management module is arranged according to the characteristics of the navigation chart. Thus, the present embodiment enables the chart to be drawn by the B/S mode. In the B/S mode, after the server is updated, the browser end can also be synchronously updated, so that the problem that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art is solved. Moreover, in the embodiment, canvas in HTML5 is also used as technical support, so that the requirements of a web browser on plug-ins are reduced, and a user can apply the system for drawing a navigation chart provided by the embodiment without downloading additional plug-ins.
Description
Technical Field
The invention relates to the field of image processing, in particular to a system and a method for mapping a navigation chart.
Background
Airline diagrams represent the relationship between different cities, airports, airlines, where the application of the charts is numerous, and for example, the relationship may represent the air freight rate. The air freight rate refers to a price system established by the national aviation administration for transporting passengers and goods by civil aircrafts or other aircrafts.
For the mapping of the chart, in the prior art, the chart is generally mapped in a C/S (Client/Server architecture) mode, that is, the chart is mapped by downloading a Client. However, after the background upgrades the client, if the user wants to use the upgraded function, the user needs to download the client again, that is, the function upgrade of the background and the use of the user cannot be synchronized, which greatly affects the user experience.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a system and a method for drawing a chart, which implement drawing a chart in a B/S (browser/Server) mode. In the B/S mode, after the server is updated, the browser end can also be synchronously updated, so that the problem that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art is solved.
The embodiment of the invention discloses a system for drawing a navigation chart, which comprises:
the system comprises a bottom layer module, a middle layer module and a top layer module;
the bottom layer module takes canvas as a graphics container;
the middle layer module is provided with at least one drawing functional module; the drawing function module is obtained by packaging a graph drawing function;
the top module comprises a plurality of data management modules which are packaged with data processing algorithms in advance; the data processing algorithm is set according to the characteristics of the navigation chart.
Optionally, the functional module includes:
a scene module obtained by encapsulating the basic graph drawing function based on canvas;
the node module is obtained after the drawing methods of different nodes are packaged;
and encapsulating the drawing methods of different lines to obtain the line module.
Optionally, the functional module further includes:
the dynamic display module is obtained by packaging the dynamic display function of the picture; the picture dynamic display function is realized by a fixed frequency refreshing mode.
Optionally, the data processing algorithm module includes:
the system comprises an area calculation module, a butt joint data structure module, an airport and navigation department node module, a route data processing module and a display plug-in module;
the region calculation module is obtained by packaging the calculation method of the node and the line position;
the butt joint data structure module is obtained by packaging a conversion algorithm of a graph structure and a text structure;
the airport and navigation department node module is obtained by packaging the attribute of each node of the navigation chart based on the characteristics of the navigation chart;
the air route data processing module is obtained by packaging a management method of data in the drawn graph structure; the data in the graph structure includes: the system comprises nodes and lines, wherein the lines represent relations among different nodes;
and the display plug-in module is obtained by packaging the mapping flow of the navigation chart based on the characteristics of the navigation chart.
Optionally, the data processing algorithm includes: data structure of the graph and algorithms.
Optionally, Javascript is used for packaging.
The embodiment of the invention also discloses a method for drawing the navigation chart, which is applied to the navigation chart drawing system and comprises the following steps:
creating a canvas in response to a system trigger instruction;
responding to a graph drawing instruction, calling a data processing algorithm in a data management module based on a drawn object, and determining the attribute of the object, the position of the object and the drawing flow of the object;
the object is drawn on the canvas based on the object's properties, the object's location, the object's drawing flow, and the drawing functions provided by the drawing function module.
Optionally, the object includes: nodes and lines.
Optionally, the method further includes:
and calling a butt joint data processing module in the data management module, and converting the drawn graphic structure into a text structure.
The embodiment of the invention also discloses a device for drawing the navigation chart, which comprises the following components:
a creating unit for creating a canvas in response to a system trigger instruction;
the determining unit is used for responding to a graph drawing instruction, calling a data processing algorithm in the data management module based on the drawn object, and determining the attribute of the object, the position of the object and the drawing flow of the object;
and the drawing unit is used for drawing the object on the canvas based on the attribute of the object, the position of the object, the drawing flow of the object and the drawing function provided by the drawing function module.
The embodiment discloses a system and a method for drawing a navigation chart, wherein the system comprises: the canvas is used as a bottom layer module of the graphic container, a middle layer module with at least one functional module arranged and a data management module comprising a plurality of data processing algorithms packaged in advance, and the data management module is arranged according to the characteristics of the navigation chart. Therefore, the navigation line graph is drawn in the B/S mode, and the browser end can be synchronously updated after the server is updated in the B/S mode, so that the problem that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art is solved. Moreover, in the embodiment, canvas in HTML5 is also used as technical support, so that the requirements of a web browser on plug-ins are reduced, and a user can apply the system for drawing a navigation chart provided by the embodiment without downloading additional plug-ins.
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, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram illustrating a system for mapping a navigation chart according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another structure of a system for mapping a navigation chart according to an embodiment of the present invention;
FIG. 3 illustrates an implementation flow of automatic layout provided by an embodiment of the present invention;
FIG. 4 is a flow chart illustrating adding a node according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating deleting a node according to an embodiment of the present invention;
FIG. 6 is a schematic diagram illustrating a system for mapping a route chart according to an embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for drawing a chart according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram illustrating a device for drawing a chart according to an embodiment of the present invention.
Detailed Description
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Referring to fig. 1-2, there are shown schematic structural diagrams of a system for drawing a chart according to an embodiment of the present invention, where the system includes:
a bottom module 100, a middle module 200, and a top module 300;
the bottom layer module 100 takes the canvas as a graphics container;
the middle layer module 200 is provided with at least one drawing functional module; the drawing function module is obtained by packaging a graph drawing function;
the top module 300 includes a plurality of data management modules pre-packaged with data processing algorithms; the data processing algorithm is set according to the characteristics of the navigation chart.
Wherein, for the bottom layer module:
the Canvas is an important element newly added in the HTML5 and is used for drawing images specially. Wherein placing a Canvas element on a web page is equivalent to placing a "Canvas" on the web page, in which the rendering of the image can be performed.
HTML5 is the latest revision of HTML (hypertext markup language), which was made by W3C (world wide web consortium) completion standard in month 10 2014. When referring to HTML5 in a broad sense, it actually refers to a set of technology combinations including HTML, CSS (cascading style sheet) and JavaScript, in order to reduce the number of web browsers for rich internet applications that require plug-ins.
Therefore, the chart drawing system designed based on canvas as technical support realizes the chart drawing based on any browser without downloading a specific browser.
For the middle tier module 200:
the middle layer module 200 can be represented as a drawing basic function framework, which contains at least one functional module, and each functional module is packaged with a drawing method capable of realizing different functions.
In this embodiment, the drawing function is not limited, and any drawing function that can be realized by canvas may be deployed in the middle layer module.
In this embodiment, for example, the deployed drawing module may include:
a scene module 201, a node module 202 and a line module 203;
the scene module 201 is obtained by encapsulating a basic graphic drawing function based on canvas;
the node module 202 is obtained by encapsulating the drawing methods of different nodes;
the line module 203 is obtained by encapsulating the drawing methods of different lines.
In this embodiment, the scene module 201 includes some basic functions for drawing graphics, and may include: rendering refresh, rendering positioning, etc.
In this embodiment, a node module 202 is packaged with a node drawing method, where the node in this embodiment represents a node in a graph structure, and taking the drawing of a chart as an example, the node represents an airport, an airline company, a city, or the like.
For example, the following steps are carried out: for drawing a node, it may include multiple steps, such as the shape of the node under which each edge is drawn, for example, if the shape of the node is a rectangle, then a drawing method of the rectangle is encapsulated in the node module.
In this embodiment, the line module 203 is an encapsulation line drawing method, where lines are used to represent relationships between nodes, and taking a chart as an example, if there is a flight between an airport and a city, then there is a certain relationship between the airport and the city, and the relationship between the airport and the city can be represented by the lines in the chart. Wherein the lines may include: the line or curve, etc., is not limited in this embodiment, and may be any line form set by the user.
For example, the following steps are carried out: assuming that the line is a straight line with an arrow, the packaging method for drawing comprises the following steps: and drawing the arrowed line.
In addition, in order to enrich the drawing function, a dynamic display function of the drawing is added, specifically, the middle layer module further includes:
the dynamic display module is obtained by packaging the dynamic display function of the picture; the picture dynamic display function is realized by a fixed frequency refreshing mode.
For the top module 300:
it should be noted that the algorithm packaged in the top module 300 may be any method capable of implementing the mapping of the chart, and is not limited in this embodiment, for example, the data structure and algorithm of the graph may be used to implement the mapping of the chart.
Wherein, the data processing algorithm module comprises:
an area calculation module 301, a docking data structure module 302, an airport and airline department node module 303, an airline data processing module 304, and a display plug-in module 305.
The region calculation module is obtained by packaging the calculation method of the node and the line position;
the docking data structure model 302 is obtained by encapsulating the conversion algorithm of the graphic structure and the text structure;
the airport and navigation department node module 303 is obtained by packaging the attribute of each node of the navigation chart based on the characteristics of the navigation chart;
the navigation chart data processing module 304 is obtained by packaging a management method of data in a drawn graph structure; the data in the graph structure includes: the system comprises nodes and lines, wherein the lines represent relations among different nodes;
the display plug-in module 305 is obtained by packaging a navigation chart drawing process based on the characteristics of the navigation chart.
Wherein for the region calculation module 301:
when the nodes and the lines are drawn, certain rules need to be followed, for example, the existing nodes and lines cannot be covered, the followed rules are compiled and packaged in the region calculation module.
After a user triggers drawing instructions of the nodes and the lines, an algorithm in the region calculation module is called, and drawing positions of the nodes and the lines are calculated.
For the docking data structure module 302:
the graph drawn in the system is a graph structure, namely a graph containing nodes and lines, but in practical application, for example, when the chart is used in a freight rate system, the chart is displayed in the freight rate system through words, so that the data of the graph structure needs to be converted into the data of a text structure and stored, so that the data of the text structure can be applied to practical application.
For the navigation department and node module 303:
the navigation department and node module encapsulates the attribute of each node, wherein the attribute of the node is set based on the characteristics of the navigation chart, and may include: a node represents which city, which nodes are included before or after the node, etc.
When the navigation chart is drawn, the attribute of each node needs to be called from the airport and navigation department node modules, and the attribute information of the scheduled nodes is stored.
For the lane data processing module 304:
the management method of the data in the graph structure encapsulated in the airline data processing module 304 can be understood as follows: managing all data contained in the drawn graph, for example, which nodes and lines are contained in the drawn graph, and updating the stored graph structure after the nodes or lines are added to the existing graph.
For example, the following steps are carried out: the flight path data processing module is packaged with an implementation flow of automatic layout, as shown in fig. 3, and includes: 1) clearing all positioning information, 2) refreshing all node data; 3) updating the path information; 4) computing the layout, 5) processing all nodes, including for any one node: acquiring a last processed brother node of a current node, 6) calculating x and y coordinates of the node, 7) setting node coordinate positioning data, and 8) processing x coordinates of all subsequent nodes; 9) processing the overlapping content of the incoming edge, and 10) processing the overlapping content of the outgoing edge.
For the display plug-in module 305:
the display plug-in module is packaged with a chart drawing process set based on chart characteristics. Wherein, the process may include: node adding process, node deleting process and the like.
For example, the following steps are carried out: the node addition flow and the node deletion flow are shown in fig. 4 and 5.
Further, in this embodiment, Javascript is used for packaging.
Further, in this embodiment, the system for drawing the chart may be disposed in a certain application, for example, a file related to the system for drawing the chart may be imported into a certain application, or may be deployed in a browser as a plug-in.
Furthermore, after the graph is drawn, a data management method in the airline data processing module is called to manage the drawn graph, such as refreshing data.
For example, the following steps are carried out: referring to fig. 6, which shows a schematic diagram after the system is started, the functions provided by the system will be further explained based on fig. 5:
after a (pre transport) button for adding a node to the left is triggered, adding a node to the left side of the current node;
when a (Next Transport) button for adding the aviation node to the right is triggered, a new aviation node is added to the right side of the current node.
And when a button for adding a branch airline node (Alt Transport) is triggered, adding the branch airline node below the current node.
When the button to add a city node to the left (pre Dest) is triggered, a new city node is added to the left of the current node.
When the button to add a city node to the right (Next Dest) is triggered, a city node is added to the right of the current node.
And when a button for adding the branch city node (Alt Dest) is triggered, adding the city node at the parallel position of the current node.
When a button for deleting the current Node (Remove Node) is triggered, deleting the currently selected Node;
and when the button of the connection Line (Remove Line) is triggered, deleting the selected connection Line.
When the Delete All button is triggered, All selected content on the canvas is deleted.
The system for drawing a chart disclosed in this embodiment includes: the canvas is used as a bottom layer module of the graphic container, a middle layer module with at least one functional module arranged and a data management module comprising a plurality of data processing algorithms packaged in advance, and the data management module is arranged according to the characteristics of the navigation chart. Thus, the present embodiment enables the chart to be drawn by the B/S mode. In the B/S mode, after the server is updated, the browser end can also be synchronously updated, so that the problem that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art is solved. Moreover, in the embodiment, canvas in HTML5 is also used as technical support, so that the requirements of a web browser on plug-ins are reduced, and a user can apply the system for drawing a navigation chart provided by the embodiment without downloading additional plug-ins.
Referring to fig. 7, a flowchart of a method for drawing a chart according to an embodiment of the present invention is shown, where in this embodiment, the method includes:
s701: creating a canvas in response to a system trigger instruction;
in this embodiment, a user starts a chart drawing system in a browser or an application, and after the system is started, a canvas is created.
Besides, in the process of initializing the system, besides the need to create the canvas, the method may further include:
1) creating a view element of the system; wherein, the view factors include: a canvas and buttons.
When creating the button, it is also necessary to create a function of each button and bind the button and the function, so that when the button is triggered, the function corresponding to the button is called.
2) Setting a language environment;
the user may select a recognizable language, for example, a chinese language or an english language.
3) Initializing and displaying;
the button identifications are displayed according to a set language environment, for example, if a selected Chinese language is selected, the button identifications are displayed in a Chinese format.
4) If the aim of triggering the drawing system of the navigation chart is to read the drawn graph, calling a mode of the graph, wherein the mode comprises the following steps: reading mode, modifying mode.
5) Loading check data;
the purpose of checking the data is to check whether the drawn nodes or lines are correct.
6) Loading initial data;
and if the user opens the drawn data, loading the data.
S702: responding to a graph drawing instruction, calling a data processing algorithm in a data management module based on a drawn object, and determining the attribute of the object, the position of the object and the drawing flow of the object;
in this embodiment, the object may include: nodes and lines.
After the system receives a drawing instruction of a graph, specifically a drawing instruction of a certain object, calling an algorithm in a data processing algorithm module, and determining the position and the attribute of the object and a drawing flow of the object; specifically, the position of the object can be calculated according to an algorithm in the area calculation module, the attribute of the object is determined according to the airport and navigation node module, and the drawing process of the object is called from the display plug-in module.
For example, the drawing process of the object may include: add nodes, add lines, delete nodes, delete lines, etc.
S703: the object is drawn on the canvas based on the object's properties, the object's location, the object's drawing flow, and the drawing functions provided by the drawing function module.
In the embodiment, the middle layer of the system is provided with the drawing function module, the drawing function module encapsulates basic drawing functions, and when a graph is drawn on the canvas, the graph needs to be drawn according to the arranged drawing functions. Furthermore, after the graph is drawn on the canvas, a data management method in the navigation chart data processing module is called to manage the data in the drawn graph.
The method for drawing a navigation chart disclosed in the embodiment comprises the following steps: creating a canvas in response to a system trigger instruction; drawing the object on the canvas based on the attribute of the object, the position of the object, the drawing flow of the object and the drawing function provided by the drawing function module; the object is drawn on the canvas based on the object's properties, the object's location, the object's drawing flow, and the drawing functions provided by the drawing function module. Wherein, the method is applied to the mapping system of the navigation chart disclosed above. Therefore, the navigation line graph is drawn in the B/S mode, and the browser end can be synchronously updated after the server is updated in the B/S mode, so that the problem that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art is solved. Moreover, in the embodiment, canvas in HTML5 is also used as technical support, so that the requirements of a web browser on plug-ins are reduced, and a user can apply the system for drawing a navigation chart provided by the embodiment without downloading additional plug-ins.
Referring to fig. 8, a schematic structural diagram of an apparatus for drawing a chart according to an embodiment of the present invention is shown, and in this embodiment, the apparatus includes:
a creating unit 801 configured to create a canvas in response to a system trigger instruction;
a determining unit 802, configured to respond to a graph drawing instruction, invoke a data processing algorithm in the data management module based on a drawn object, and determine an attribute of the object, a position of the object, and a drawing flow of the object;
a drawing unit 803 for drawing the object on the canvas based on the property of the object, the position of the object, the drawing flow of the object, and the drawing function provided by the drawing function module.
Optionally, the object includes: nodes and lines.
Optionally, the method further includes:
and the calling unit is used for calling the butt joint data processing module in the data management module and converting the drawn graphic structure into a text structure.
In the embodiment, the device of the embodiment realizes that the navigation chart is drawn in the B/S mode, and the browser end can be synchronously updated after the server is updated in the B/S mode, so that the problems that service upgrading and user experience cannot be timely synchronized due to the C/S mode in the prior art are solved. Moreover, in the embodiment, canvas in HTML5 is also used as technical support, so that the requirements of a web browser on plug-ins are reduced, and a user can apply the system for drawing a navigation chart provided by the embodiment without downloading additional plug-ins.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A system for mapping a navigational chart, comprising:
the system comprises a bottom layer module, a middle layer module and a top layer module;
the bottom layer module takes canvas as a graphics container;
the middle layer module is provided with at least one drawing functional module; the drawing function module is obtained by packaging a graph drawing function;
the top module comprises a plurality of data management modules which are packaged with data processing algorithms in advance; the data processing algorithm is set according to the characteristics of the navigation chart.
2. The system of claim 1, wherein the functional module comprises:
a scene module obtained by encapsulating the basic graph drawing function based on canvas;
the node module is obtained after the drawing methods of different nodes are packaged;
and encapsulating the drawing methods of different lines to obtain the line module.
3. The system of claim 1 or 2, wherein the functional module further comprises:
the dynamic display module is obtained by packaging the dynamic display function of the picture; the picture dynamic display function is realized by a fixed frequency refreshing mode.
4. The system of claim 1, wherein the data processing algorithm module comprises:
the system comprises an area calculation module, a butt joint data structure module, an airport and navigation department node module, a route data processing module and a display plug-in module;
the region calculation module is obtained by packaging the calculation method of the node and the line position;
the butt joint data structure module is obtained by packaging a conversion algorithm of a graph structure and a text structure;
the airport and navigation department node module is obtained by packaging the attribute of each node of the navigation chart based on the characteristics of the navigation chart;
the air route data processing module is obtained by packaging a management method of data in the drawn graph structure; the data in the graph structure includes: the system comprises nodes and lines, wherein the lines represent relations among different nodes;
and the display plug-in module is obtained by packaging the mapping flow of the navigation chart based on the characteristics of the navigation chart.
5. The system of claim 1, wherein the data processing algorithm comprises: data structure of the graph and algorithms.
6. The system of claim 1, wherein the packaging is performed using Javascript.
7. A method for drawing a navigation chart, the method being applied to the system of claim 1, the method comprising:
creating a canvas in response to a system trigger instruction;
responding to a graph drawing instruction, calling a data processing algorithm in a data management module based on a drawn object, and determining the attribute of the object, the position of the object and the drawing flow of the object;
the object is drawn on the canvas based on the object's properties, the object's location, the object's drawing flow, and the drawing functions provided by the drawing function module.
8. The method of claim 7, wherein the object comprises: nodes and lines.
9. The method of claim 7, further comprising:
and calling a butt joint data processing module in the data management module, and converting the drawn graphic structure into a text structure.
10. An apparatus for mapping a chart, comprising:
a creating unit for creating a canvas in response to a system trigger instruction;
the determining unit is used for responding to a graph drawing instruction, calling a data processing algorithm in the data management module based on the drawn object, and determining the attribute of the object, the position of the object and the drawing flow of the object;
and the drawing unit is used for drawing the object on the canvas based on the attribute of the object, the position of the object, the drawing flow of the object and the drawing function provided by the drawing function module.
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| CN201911001729.XA CN110728733A (en) | 2019-10-21 | 2019-10-21 | System and method for drawing chart |
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| CN201911001729.XA CN110728733A (en) | 2019-10-21 | 2019-10-21 | System and method for drawing chart |
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| CN105094815A (en) * | 2015-06-30 | 2015-11-25 | 北京奇虎科技有限公司 | Method and device for map route compilation |
| CN106484408A (en) * | 2016-09-29 | 2017-03-08 | 电子科技大学 | A kind of node relationships figure display methods based on HTML5 and system |
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