CN111325812B - Dynamic calculation and drawing method and device for pincer arrow in military symbol plotting - Google Patents
Dynamic calculation and drawing method and device for pincer arrow in military symbol plotting Download PDFInfo
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- CN111325812B CN111325812B CN202010078355.8A CN202010078355A CN111325812B CN 111325812 B CN111325812 B CN 111325812B CN 202010078355 A CN202010078355 A CN 202010078355A CN 111325812 B CN111325812 B CN 111325812B
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Abstract
The application relates to a dynamic calculation and drawing method and a device for a pincer arrow in a military symbol plotting, wherein the method comprises the following steps: monitoring and drawing a pincer arrow event; entering a drawing state, and constructing a pincushion arrow map layer; sampling trunk points according to the monitored map mouse event; judging the point position acquisition quantity, and calculating the whole pincushion arrow to construct a point set to form the whole pincushion arrow; and setting the point position set in the constructed map layer as calculated complete pincer-click arrow coordinate data, and completely presenting the map. The application can achieve the effect of dynamic arrow in a simple and rapid rendering mode through a simple drawing process, and has simple realization and convenient operation.
Description
Technical Field
The application relates to the technical field of dynamic plotting, in particular to a dynamic calculation and drawing method and device for a pincer arrow in a military symbol plotting, computer equipment and a readable storage medium.
Background
Dynamic plotting is widely used in a number of industries and fields of power, communications, and emergency. The method can describe various business objects by using vivid vector symbols, represent various resources, and dynamically render business progress and flow.
In the prior art, each GIS company and network has the function of providing military plotting, such as arcgis, hypergraph and mapsis; but most are non-open source and charged, and in addition, in implementation, the C/S (server-client) architecture is mainly used for constructing CAD layers and constructing situation deduction animation through a timer; the B/S (browser and server) architecture needs to construct a geographic service manager to provide dynamic refreshing of the attribute panel on the basis of the dynamic plotting service permission module; the method is relatively complex and troublesome in both environment-dependent and concrete implementation, and has large limitation, namely the prior art is complex in implementing dynamic arrow operation.
Accordingly, the prior art is in need of improvement.
Disclosure of Invention
Aiming at the technical problems in the prior art, the application provides a method and a device for dynamically calculating and drawing switching of a pincushion arrow in a military symbol plotting, a computer device and a readable storage medium.
The technical scheme of the application is as follows:
a dynamic calculation and drawing method for a pincer arrow in a military symbol plotting, wherein the method comprises the following steps:
monitoring and drawing a pincer arrow event;
entering a drawing state, and constructing a pincushion arrow map layer;
sampling trunk points according to the monitored map mouse event;
judging the point position acquisition quantity, and calculating the whole pincushion arrow to construct a point set to form the whole pincushion arrow;
and setting the point position set in the constructed map layer as calculated complete pincer-click arrow coordinate data, and completely presenting the map.
The dynamic calculation and drawing method for the pincushion arrow in the army symbol plotting, wherein the step of monitoring and drawing the pincushion arrow event comprises the following steps:
and when a drawing instruction is received, monitoring mouse interaction events on the map, including left click of a mouse and related events of mouse movement.
The method for dynamically calculating and drawing the pincushion arrow in the army symbol plotting, wherein the step of entering a drawing state and constructing an initial layer of the pincushion arrow map further comprises the following steps:
entering a drawing state, and constructing an initial layer of a pincushion arrow map: the initial value of the coordinate point set data is a null array.
The dynamic calculation and drawing method for the pincushion arrow in the army symbol plotting, wherein the step of sampling trunk points according to the monitored map mouse event comprises the following steps:
and (3) sampling trunk points according to the monitored map mouse event: clicking the map by the left button of the mouse to confirm the acquisition point, and simultaneously acquiring the longitude and latitude of the coordinates of the click point; and acquiring longitude and latitude in real time when the mouse moves, and dynamically updating the corresponding line graph layer and the surface graph layer.
The dynamic calculation and drawing method of the pincushion arrow in the army symbol plotting, wherein the step of calculating the whole pincushion arrow construction point set comprises the steps of:
judging whether the point location acquisition number is more than or equal to 3;
if the point position acquisition quantity is equal to 3, calculating the longitude and latitude of a fourth left arrow part connection point according to the acquired three main connection points and the axisymmetric principle;
if the point location acquisition number is more than 3 and equal to 4; the whole pincer-beating arrow construction point set is calculated according to the 4 main connection points obtained in the previous step.
The dynamic calculation and drawing method of the pincushion arrow in the army symbol plotting, wherein the step of calculating the whole pincushion arrow construction point set comprises the following steps of:
1) Calculating a central point according to longitude and latitude of the left tail point and the right tail point to serve as a two-part arrow connecting point O;
2) Calculating a left half arrow according to the left tail, the connecting point O and the left arrow to form a point coordinate set;
3) Calculating a right half arrow according to the right tail, the connecting point O and the right arrow to form a point coordinate set;
4) Forming a point set according to the left half arrow calculated in the step 2), and calculating a left half arrow connecting curve by combining with a Bezier curve principle;
5) 4) constructing a point set according to the right half arrow calculated in the step 3), and calculating a right half arrow connecting curve by combining with a Bezier curve principle;
6) And finally, integrating the data of the parts into a point location set to form the whole pincushion arrow.
The dynamic calculation and drawing method for the pincushion arrow in the army symbol plotting, wherein the step of sampling the trunk point according to the monitored map mouse event further comprises the following steps:
and (3) sampling the main points according to the monitored map mouse event, namely the left tail point, the right arrow point and the connecting points of the left arrow point parts in sequence.
A dynamic computation and drawing device for a pincer arrow in a military symbol plotting, wherein the device comprises:
the monitoring module is used for monitoring and drawing the pincushion arrow event;
the drawing and constructing module is used for entering a drawing state and constructing a pincer-click arrow map layer;
the sampling module is used for sampling trunk points according to the monitored map mouse event;
the judging module is used for judging the point position acquisition quantity, calculating the whole pincushion arrow construction point set and forming the whole pincushion arrow;
the setting module is used for setting the point position set in the constructed map layer into the calculated complete pincushion arrow coordinate data, and the map is completely presented.
A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program performs the steps of the dynamic calculation and drawing method of the pincer arrow in any one of the army symbol plots.
A computer readable storage medium having stored thereon a computer program, wherein the computer program when executed by a processor implements the steps of the method for dynamically calculating and drawing a pincer arrow in a military symbol plot of any of the above.
Compared with the prior art, the embodiment of the application has the following advantages:
the application provides a dynamic calculation and drawing method and device for a pincushion arrow in a military standard symbol plotting, computer equipment and a readable storage medium, which can achieve the effect of the dynamic arrow in a simple and rapid rendering mode through a simple drawing process on the basis of being applicable to various application platforms, and provide visual, rich and visual battlefield situation information for combat command and decision, and are simple to realize and convenient to operate.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a flow chart of a dynamic calculation and drawing method for a pincer arrow in a military symbol plot according to an embodiment of the present application.
Fig. 2 is a schematic drawing structure diagram of a dynamic calculation and drawing method for a pincer arrow in a military symbol plotting according to an embodiment of the present application.
FIG. 3 is a functional block diagram of a dynamic calculation and drawing device for a pincer arrow in a military symbol plot in accordance with an embodiment of the present application.
Fig. 4 is an internal structural diagram of a computer device in an embodiment of the present application.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The inventor finds that each GIS company and network in the prior art has the function of providing military plotting, such as arcgis, hypergraph and mapsis; but most are non-open source and charged, and in addition, in implementation, the C/S (server-client) architecture is mainly used for constructing CAD layers and constructing situation deduction animation through a timer; the B/S (browser and server) architecture needs to construct a geographic service manager to provide dynamic refreshing of the attribute panel on the basis of the dynamic plotting service permission module; the method is relatively complex and troublesome in both environment-dependent and concrete implementation, and has large limitation, namely the technical problem that the dynamic arrow mark operation is complex in the prior art.
On the basis of being applicable to various application platforms, the effect of a dynamic arrow can be achieved through a simple drawing process in a simple and rapid rendering mode, and the problem of providing visual, rich and image battlefield situation information for combat command and decision is solved.
Referring to fig. 1, fig. 1 shows a dynamic calculation and drawing method for a pincushion arrow in a military symbol plot according to an embodiment of the present application, based on an electronic map, the method for dynamically calculating and drawing a pincushion arrow in a military symbol plot provided by the present application includes the following steps:
step S1, monitoring a drawing pincer arrow event, and starting to monitor a mouse interaction event on a map when a drawing instruction is received, wherein the mouse interaction event comprises a left click event and a mouse movement related event;
in the embodiment of the application, when a drawing instruction is received, monitoring mouse interaction events on a map, including left click of a mouse and related events of movement of the mouse, is started.
S2, entering a drawing state, and constructing a pincer-click arrow map layer;
in the step, a drawing state is entered, and an initial layer of a pincushion arrow map is constructed: the initial value of the coordinate point set data is a null array.
S3, sampling trunk points according to the monitored map mouse event;
for example, the main point (as shown in fig. 2: the left tail point, the right arrow point, and the left arrow point part connection point in order) is sampled according to the monitored map mouse event: clicking the map by the left button of the mouse to confirm the acquisition point, and simultaneously acquiring the longitude and latitude of the coordinates of the click point; and when the mouse moves, acquiring longitude and latitude in real time and dynamically updating the corresponding line drawing layer and the surface drawing layer.
Step S4, judging whether the point location acquisition number is more than or equal to 3, if so (the last connection point is lacking), entering step S5; if the number of the main connection points is more than 3 and equal to 4 (the collection of the 4 main connection points is complete), the step S6 is entered;
step S5, calculating the longitude and latitude of a fourth left arrow part connecting point according to the axisymmetric principle according to the collected three main connecting points, and entering into step S6;
step S6, calculating the whole pincer-beating arrow construction point set according to the 4 main connection points obtained in the previous step:
1) Calculating a central point according to longitude and latitude of the left tail point and the right tail point to serve as a two-part arrow connecting point O;
2) Calculating a left half arrow according to the left tail, the connecting point O and the left arrow to form a point coordinate set (comprising an arrow and an arrow body part);
3) Calculating a right half arrow according to the right tail, the connecting point O and the right arrow to form a point coordinate set (comprising an arrow and an arrow body part);
4) Forming a point set according to the left half arrow calculated in the step 2), and calculating a left half arrow connecting curve by combining with a Bezier curve principle;
5) 4) constructing a point set according to the right half arrow calculated in the step 3), and calculating a right half arrow connecting curve by combining with a Bezier curve principle;
6) And finally, integrating the data of the parts into a point location set to form the whole pincushion arrow.
And S7, setting the point position sets in the two map layers which are originally created as the complete pincer-beating arrow coordinate data calculated by the above, and completely presenting the map.
From the above, the application provides a method for dynamically calculating and drawing and switching the arrow in the army symbol plotting, which can achieve the effect of dynamic arrow in a simple and rapid rendering mode through a simple drawing process on the basis of being applicable to various application platforms, and provides visual, rich and visual battlefield situation information for combat command and decision, and the method is simple to implement and convenient to operate.
In one embodiment, the application provides a dynamic calculation and drawing device for a pincer arrow in a military symbol plot, as shown in fig. 3, the device comprises:
a monitor module 41 for monitoring the drawing pincer arrow event;
the drawing and constructing module 42 is used for entering a drawing state and constructing a pincer-click arrow map layer;
the sampling module 43 is configured to sample a trunk point according to the monitored map mouse event;
the judging module 44 is configured to judge the number of point locations collected, calculate a whole pincer arrow construction point set, and form a whole pincer arrow;
the setting module 45 is configured to set the point location set in the constructed map layer to be the calculated complete pincushion arrow coordinate data, and the map is completely presented; as described in detail above.
In one embodiment, the present application provides a computer device, which may be a terminal, with an internal structure as shown in fig. 4. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program, when executed by a processor, implements a method of generating a natural language model. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by persons skilled in the art that the block diagram of FIG. 4 is merely a partial structure associated with the present inventive arrangements and is not limiting of the computer device to which the present inventive arrangements are applied, and that a particular computer device may include more or less components than those shown, or may combine some of the components, or have a different arrangement of components.
The embodiment of the application provides computer equipment, which comprises a memory and a processor, wherein the memory stores a computer program, and the processor realizes the following steps when executing the computer program:
monitoring and drawing a pincer arrow event;
entering a drawing state, and constructing a pincushion arrow map layer;
sampling trunk points according to the monitored map mouse event;
judging the point position acquisition quantity, and calculating the whole pincushion arrow to construct a point set to form the whole pincushion arrow;
and setting the point position set in the constructed map layer as calculated complete pincer-click arrow coordinate data, and completely presenting the map.
The step of monitoring and drawing the pincer arrow event comprises the following steps:
and when a drawing instruction is received, monitoring mouse interaction events on the map, including left click of a mouse and related events of mouse movement.
The method for dynamically calculating and drawing the pincushion arrow in the army symbol plotting, wherein the step of entering a drawing state and constructing an initial layer of the pincushion arrow map further comprises the following steps:
entering a drawing state, and constructing an initial layer of a pincushion arrow map: the initial value of the coordinate point set data is a null array.
The step of sampling the trunk point according to the monitored map mouse event comprises the following steps:
and (3) sampling trunk points according to the monitored map mouse event: clicking the map by the left button of the mouse to confirm the acquisition point, and simultaneously acquiring the longitude and latitude of the coordinates of the click point; and acquiring longitude and latitude in real time when the mouse moves, and dynamically updating the corresponding line graph layer and the surface graph layer.
The step of calculating the whole binding arrow construction point set comprises the following steps of:
judging whether the point location acquisition number is more than or equal to 3;
if the point position acquisition quantity is equal to 3, calculating the longitude and latitude of a fourth left arrow part connection point according to the acquired three main connection points and the axisymmetric principle;
if the point location acquisition number is more than 3 and equal to 4; calculating the whole pincer-beating arrow construction point set according to the 4 main connection points obtained in the previous step; as described in detail above.
In summary, compared with the prior art, the embodiment of the application has the following advantages:
the application provides a dynamic calculation and drawing method and device for a pincushion arrow in a military standard symbol plotting, computer equipment and a readable storage medium.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (8)
1. A dynamic calculation and drawing method for a pincer arrow in a military symbol plotting is characterized by comprising the following steps:
monitoring and drawing a pincer arrow event;
entering a drawing state, and constructing a pincushion arrow map layer;
sampling trunk points according to the monitored map mouse event;
judging the point position acquisition quantity, and calculating the whole binding arrow to construct a point set to form the whole binding arrow;
setting a point position set in the constructed map layer into calculated complete pincer arrow coordinate data, and completely presenting the map;
the step of entering a drawing state and constructing a pincushion arrow map layer further comprises the following steps:
entering a drawing state, and constructing an initial layer of a pincushion arrow map: a line drawing layer and a surface drawing layer, wherein the initial value of the coordinate point position set data is a null array;
the step of sampling the trunk point according to the monitored map mouse event comprises the following steps:
clicking the map by the left button of the mouse to confirm the sampling point, and simultaneously acquiring the longitude and latitude of the coordinate of the clicking point; and acquiring longitude and latitude in real time when the mouse moves, and dynamically updating the corresponding line graph layer and the surface graph layer.
2. The method for dynamically calculating and drawing a pincushion arrow in a military symbol plot according to claim 1, wherein the step of monitoring and drawing the pincushion arrow event comprises the steps of:
and when a drawing instruction is received, monitoring mouse events on the map, including left click of a mouse and related events of mouse movement.
3. The method for dynamically calculating and drawing the pincer arrow in the army symbol plotting as set forth in claim 1, wherein the step of determining the number of point location acquisitions and calculating the entire pincer arrow construction point set includes:
judging whether the point location acquisition number is more than or equal to 3;
if the point position acquisition quantity is equal to 3, calculating the longitude and latitude of a fourth left arrow part connection point according to the acquired three main connection points and the axisymmetric principle;
if the point location acquisition number is more than 3 and equal to 4; and calculating the whole pincer-and-dart construction point set according to the 4 main connection points obtained in the previous step.
4. The method for dynamically calculating and drawing a pincer arrow in a military symbol plot according to claim 3, wherein the step of calculating the entire pincer arrow construction point set according to the 4 main connection points obtained in the previous step comprises:
1) Calculating a central point according to longitude and latitude of the left tail and the right tail to serve as an arrow connecting point O of the two parts;
2) Calculating a left arrow mark at the left half side according to the left tail, the connecting point O and the left arrow three points to form a point set;
3) Calculating a right half arrow mark according to the right tail, the connecting point O and the right arrow three points to form a point set;
4) Forming a point set according to the left arrow mark calculated in the step 2), and calculating a left arrow mark connecting curve by combining with a Bezier curve principle;
5) 4), forming a point set according to the right half arrow calculated in the step 3), and calculating a right half arrow connecting curve by combining with a Bezier curve principle;
6) And finally, integrating all the data into a point set to form the whole pincushion arrow.
5. The method for dynamically calculating and drawing a pincer arrow in a military symbol plot according to claim 1, wherein the step of sampling a trunk point according to an monitored map mouse event further comprises:
and (3) sampling trunk points according to the monitored map mouse events, and sampling left tail points, right arrow points, left arrow points and connecting points in sequence.
6. A dynamic calculation and drawing device for a pincer arrow in a military symbol plotting, characterized in that the device comprises:
the monitoring module is used for monitoring and drawing a pincer-striking arrow event;
the drawing and constructing module is used for entering a drawing state and constructing a pincushion arrow map layer, in particular to constructing a pincushion arrow map initial layer: a line drawing layer and a surface drawing layer, wherein the initial value of the coordinate point position set data is a null array;
the sampling module is used for sampling trunk points according to monitored map mouse events, specifically clicking a map to confirm sampling points by a left click of a mouse, and simultaneously acquiring the longitude and latitude of coordinates of the clicking points; acquiring longitude and latitude in real time and dynamically updating a corresponding line drawing layer and a corresponding surface drawing layer when the mouse moves;
the judging module is used for judging the point position acquisition quantity, calculating the whole binding arrow mark construction point set and forming the whole binding arrow mark;
the setting module is used for setting the point position set in the constructed map layer into the calculated complete pincer-hitting arrow coordinate data, and the map is completely presented.
7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, carries out the steps of the method for dynamically calculating and drawing the pincer arrow in the army symbol plot according to any of claims 1 to 5.
8. A computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the dynamic calculation and drawing method of a pincer arrow in a army symbol plot according to any of claims 1 to 5.
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| CN202010078355.8A CN111325812B (en) | 2020-02-03 | 2020-02-03 | Dynamic calculation and drawing method and device for pincer arrow in military symbol plotting |
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| CN202010078355.8A CN111325812B (en) | 2020-02-03 | 2020-02-03 | Dynamic calculation and drawing method and device for pincer arrow in military symbol plotting |
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| CN113487704B (en) * | 2021-06-25 | 2024-01-30 | 山东齐鲁数通科技有限公司 | Dovetail arrow mark drawing method and device, storage medium and terminal equipment |
| CN115880447B (en) * | 2022-09-27 | 2023-08-01 | 北京华如科技股份有限公司 | Simulation situation entity army label drawing method and device |
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| 单东辉.基于数据库共享的协同标绘技术研究.中国优秀硕士学位论文全文数据库.2012,参见第二-四章. * |
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