CN104536743A - Map plotting method and system based on Android operating system - Google Patents
Map plotting method and system based on Android operating system Download PDFInfo
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- CN104536743A CN104536743A CN201410802652.7A CN201410802652A CN104536743A CN 104536743 A CN104536743 A CN 104536743A CN 201410802652 A CN201410802652 A CN 201410802652A CN 104536743 A CN104536743 A CN 104536743A
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Abstract
The invention discloses a map plotting method based on an Android operating system. The map plotting method includes the steps of drawing base metafiles, wherein the base metafiles include the segments, the broken lines, the circles, the arcs, the ovals and the characters, and metafile attributes include the colors, the filling types and the line types; drawing regular labels, and respectively drawing all metafiles for forming the labels in a recursive mode; drawing irregular labels, wherein the irregular labels include the closed curves, the open curves, the normals, the arrows and the filling; controlling the labels, wherein the labels are transversely moved, zoomed and rotated by moving label control points; converting shapes. The invention further discloses a map plotting system based on the Android operating system. By means of the map plotting method and system, a developer can conveniently and efficiently develop a map plotting system on an Android mobile terminal without considering an Android operating system bottom-layer drawing mechanism, the development cost is saved, the degree of coupling between a map and map plotting is also lowered, and the maintainability of software is improved.
Description
Technical field
The present invention relates to map plotting field, particularly relate to a kind of map plotting method and system based on Android (Android) operating system.
Background technology
Since the middle and later periods nineties in last century, wireless network communication technique and Internet technology obtain develop rapidly, impel the continuous enhancing of mobile communication equipment function, more and more intellectuality.People require to walk out fixed network, wired interconnected constraint in a hurry, service application removable, the characteristic such as can to access whenever and wherever possible and more and more come into one's own.Along with the widespread use of mobile interchange, consult a map on the mobile apparatus, carry out the inexorable trend that map plotting has become map plotting technical development.
On windows platform, there are much shaping map plotting kit, kit at present, such as hypergraph dynamically commands plotting (.NET version) (the SuperMap DGO.NET) that develop software to realize based on .NET development language, and coordinate the graphical development tool bag that SuperMap Objects.NET 6R product uses, be mainly used in two three-dimensional applications systems of the C/S framework in fast Development, customization Industry-oriented field on windows platform, the symbolic model towards specific industry is provided.And on the mobile apparatus, also there is no shaping map plotting technology at present.Because Android operation system bottom is drawn machine-processed different from Windows, the map plotting instrument on Windows cannot be applied directly in Android platform.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of map plotting method and system based on Android operation system, not to have the problem of shaping map plotting technology in order to solve prior art in Android operation system.
For solving the problems of the technologies described above, the invention provides a kind of map plotting method based on Android operation system, said method comprising the steps of:
Element figure is drawn, and described element figure comprises line segment, broken line, circle, circular arc, ellipse and word, and primitive attribute comprises color, the fill style and line style;
Rule label is drawn, and draws all pels of the described label of composition in a recursive manner respectively;
Irregular label is drawn, and described irregular label comprises closed curve, open curve, normal, arrow, filling;
Label controls, and carries out translation, convergent-divergent and rotation, shape conversion by mobile label dominating pair of vertices label.
Further, the process that described element figure is drawn specifically comprises:
According to determining that the operand of element figure shape calculates the border up and down of element figure;
According to described operand computing and plotting track, and drawing locus is stored in the android.graphics.Path class that Android drawing interface provides;
In drawing practice, create paintbrush according to described primitive attribute, and drawing locus is plotted on painting canvas.
Further, described operand and primitive attribute storage organization is in a database as following table:
Further, the process that described regular label is drawn comprises:
When described regular label is made up of multiple subgraph unit, the drawing practice of recursive call subgraph unit respectively;
When described regular label is element figure, carry out element figure drafting.
Further, described irregular label is drawn and is specially:
Utilize the equidistant partitioning algorithm of B-spline function, curve, ask the interior parallel segment algorithm of filling of certain some normal slope algorithm, the arrow technique of painting and/or closed domain on curve to draw irregular label.
Further, the reference mark of described regular label comprises translation reference mark, convergent-divergent reference mark and rotates reference mark; The reference mark of described irregular label comprises translation reference mark, convergent-divergent reference mark, rotates reference mark, Shape Control Point and anchor point.
Further, the process that described label controls comprises:
The OnTouchDown call back function provided by Android system catches the touch event on screen, and the screen coordinate that recording events occurs;
After touch action occurs, call all reference mark of the hitTest method traversal label of Marking class, when certain reference mark of existence, when making touch screen position in the effective coverage at described reference mark, return to described reference mark by call back function;
The current reference mark object chosen of buffer memory in the call back function of audiomonitor;
The OnTouchMove call back function provided by Android system catches screen slip event, and the screen coordinate of position occurs record slip event;
Screen slip event is passed to the current reference mark object chosen by the moveTo method calling reference mark;
Screen slip event is passed to label object by described reference mark object;
After label object reception to reference mark moving event, the type according to being moved reference mark carries out translation, convergent-divergent, rotation and/or shape-changing operation to this label, and is repainted on painting canvas by the label after operation.
Further, the contains method of the android.graphics.Region class provided by Android drawing interface judges touch screen position whether in effective coverage, reference mark.
The present invention also provides a kind of map plotting system based on Android operation system, and described system comprises element figure drafting module, regular label drafting module, irregular label drafting module mod sum label control module;
Described element figure drafting module is made up of the drawing classes inherited to AbstractDrawItem base class, for drawing line segment, broken line, circle, circular arc, ellipse and word;
Described regular label drafting module is unified to be encapsulated in Marking class, adopts integrated mode that each meta graph recognition is become complete regular label, and provide the interface of amendment label attribute in Marking class;
Described irregular label drafting module is made up of the drawing classes inherited to AbstractIrregularMark base class, for providing the rendering algorithm of irregular label;
Described label control module is made up of the control class inherited to AbstractAdjustHandle base class, draws and touch-control action listener for rotation, translation, convergent-divergent reference mark.
Further, the interface of described amendment label attribute comprises enlargement ratio interface, reference mark interface, position coordinates interface, tag interface, anglec of rotation interface.
Beneficial effect of the present invention is as follows:
Adopt the map plotting method and system that the present invention is based on Android operation system, developer need not be concerned about that the Android operation system bottom mechanism of drawing just can facilitate, in Android mobile terminal, carry out map plotting system development efficiently, not only save cost of development, also greatly reduce the degree of coupling between map and map plotting, improve the maintainability of software.
In addition, when existing pel can not provide the label meeting user's requirement, the present invention can come to expand element figure and irregular label respectively by inheriting AbstractDrawItem or AbstractIrregularMark virtual base class, thus reaches the object of the new label of dynamic expansion.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of map plotting system based on Android operation system of the embodiment of the present invention;
Fig. 2 is the concrete structure schematic diagram of a kind of map plotting system based on Android operation system of the embodiment of the present invention;
Fig. 3 is the process flow diagram that a kind of element figure of the embodiment of the present invention is drawn;
Fig. 4 is the process flow diagram that a kind of label of the embodiment of the present invention controls.
Embodiment
There is no the problem of shaping map plotting technology in Android operation system in order to solve prior art, the invention provides a kind of map plotting method and system based on Android operation system, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, do not limit the present invention.
A kind of map plotting system based on Android operation system of the embodiment of the present invention, encapsulate a set of map plotting development interface based on Android operation system, as depicted in figs. 1 and 2, described system comprises element figure drafting module 11, regular label drafting module 12, irregular label drafting module 13 mod sum label control module 14 to its structure.
Described element figure drafting module 11 is made up of, for drawing line segment, broken line, circle, circular arc, ellipse and word the drawing classes inherited to AbstractDrawItem base class; Described succession comprises the classes such as DrawLine, DrawCircle, DrawArc to the drawing classes of AbstractDrawItem base class.
Described regular label drafting module 12 is unified to be encapsulated in Marking class, in Marking class, adopt integrated mode that each meta graph recognition is become complete regular label, and the interface of amendment label attribute is provided, the interface of described amendment label attribute comprises enlargement ratio interface, reference mark interface, position coordinates interface, tag interface, anglec of rotation interface etc.
Described irregular label drafting module 13 is made up of, for providing the rendering algorithm of irregular label the drawing classes inherited to AbstractIrregularMark base class; Described succession comprises the classes such as BigArrow, DoubleArrow, SlimArrow to the drawing classes of AbstractIrregularMark base class.
Described label control module 14 is made up of the control class inherited to AbstractAdjustHandle base class, draws and touch-control action listener for rotation, translation, convergent-divergent reference mark; Described succession comprises the classes such as RotateHandle, TransformHandle, TranslateHandle to the control class of AbstractAdjustHandle base class.
A kind of map plotting method based on Android operation system of the embodiment of the present invention comprises element figure drafting, regular label is drawn, irregular label is drawn mod sum label and controlled.Be described as follows:
1, element figure is drawn:
Described element figure comprises line segment, broken line, circle, circular arc, ellipse and word, and primitive attribute comprises color, the fill style and line style.Its process of drawing as shown in Figure 3, specifically comprises:
Step s301, according to determining that the operand of element figure shape calculates the border up and down of element figure;
Described operand and primitive attribute storage organization is in a database as shown in table 1.
Table 1
For ellipse, operand comprises center point coordinate, horizontal semiaxis and longitudinal semiaxis.
Step s302, according to described operand computing and plotting track, and is stored into drawing locus in the android.graphics.Path class that Android drawing interface provides.
Step s303, creates paintbrush according to described primitive attribute, and is plotted on painting canvas by drawing locus in drawing (draw) method.Main code is as follows:
2, regular label is drawn:
Rule label is polymerized by one or more pel, and therefore, in the present embodiment, regular label is drawn is all pels drawing the described label of composition in a recursive manner respectively.Its process of drawing comprises:
(1) when described regular label is made up of multiple subgraph unit, the drawing practice of recursive call subgraph unit respectively;
(2) when described regular label is element figure, element figure drafting is carried out.
Main code is as follows:
3, irregular label is drawn:
In irregular label, the unfixed part of geometric configuration can not describe by primitive data as regular label, needs to adopt specific rendering algorithm to realize respectively according to the geometric configuration of this label of composition.Although shape, the different sizes of geometric configuration not fixed part in irregular label, geometry feature is identical a bit.Accordingly, the irregular label containing not fixed part can be divided into closed curve, open curve, normal, arrow, the large class of filling five, draw this few class irregular geometry shape to need to use B-spline function, the equidistant partitioning algorithm of curve, ask on curve and fill parallel segment algorithm etc. in certain some normal slope algorithm, the arrow technique of painting, closed domain, above-mentioned algorithm is the general-purpose algorithm of prior art, does not repeat one by one at this.
4, label controls:
Label controls to refer to and carries out translation, convergent-divergent and rotation, shape conversion by mobile label dominating pair of vertices label.The reference mark of described regular label comprises translation reference mark, convergent-divergent reference mark and rotates reference mark; The reference mark of described irregular label comprises translation reference mark, convergent-divergent reference mark, rotates reference mark, Shape Control Point and anchor point.The process that described label controls as shown in Figure 4, comprises the following steps:
Step s401, the OnTouchDown call back function provided by Android system catches the touch event on screen, and the screen coordinate that recording events occurs;
Step s402, after touch action occurs, call all reference mark of the hitTest method traversal label of Marking class, when certain reference mark of existence, when making touch screen position in the effective coverage at described reference mark, return to described reference mark by call back function, if there is no this reference mark, then ignore this screen touch action.Main code is as follows:
In the present embodiment, the contains method of the android.graphics.Region class provided by Android drawing interface judges touch screen position whether in effective coverage, reference mark.Main code is as follows:
Step s403, after judging that touch screen position is in the effective coverage at certain reference mark by the hitTest method of Marking class, the current reference mark object chosen of buffer memory in the call back function of audiomonitor.Main code is as follows:
Step s404, the OnTouchMove call back function provided by Android system catches screen slip event, and the screen coordinate of position occurs record slip event;
Step s405, screen slip event is passed to the current reference mark object chosen by the moveTo method calling reference mark.Main code is as follows:
Step s406, screen slip event is passed to label object (upper strata container) by described reference mark object.Main code is as follows:
Step s407, after label object reception to reference mark moving event, the type according to being moved reference mark carries out translation, convergent-divergent, rotation and/or shape-changing operation to this label, and is repainted on painting canvas by the label after operation.
Adopt the map plotting method and system that the present invention is based on Android operation system, developer need not be concerned about that the Android operation system bottom mechanism of drawing just can facilitate, in Android mobile terminal, carry out map plotting system development efficiently, not only save cost of development, also greatly reduce the degree of coupling between map and map plotting, improve the maintainability of software.
In addition, when existing pel can not provide the label meeting user's requirement, the present invention can come to expand element figure and irregular label respectively by inheriting AbstractDrawItem or AbstractIrregularMark virtual base class, thus reaches the object of the new label of dynamic expansion.
Although be example object, disclose the preferred embodiments of the present invention, it is also possible for those skilled in the art will recognize various improvement, increase and replacement, and therefore, scope of the present invention should be not limited to above-described embodiment.
Claims (10)
1., based on a map plotting method for Android operation system, it is characterized in that, said method comprising the steps of:
Element figure is drawn, and described element figure comprises line segment, broken line, circle, circular arc, ellipse and word, and primitive attribute comprises color, the fill style and line style;
Rule label is drawn, and draws all pels of the described label of composition in a recursive manner respectively;
Irregular label is drawn, and described irregular label comprises closed curve, open curve, normal, arrow, filling;
Label controls, and carries out translation, convergent-divergent and rotation, shape conversion by mobile label dominating pair of vertices label.
2. as claimed in claim 1 based on the map plotting method of Android operation system, it is characterized in that, the process that described element figure is drawn specifically comprises:
According to determining that the operand of element figure shape calculates the border up and down of element figure;
According to described operand computing and plotting track, and drawing locus is stored in the android.graphics.Path class that Android drawing interface provides;
In drawing practice, create paintbrush according to described primitive attribute, and drawing locus is plotted on painting canvas.
3., as claimed in claim 2 based on the map plotting method of Android operation system, it is characterized in that, described operand and primitive attribute storage organization is in a database as following table:
4. as claimed in claim 1 based on the map plotting method of Android operation system, it is characterized in that, the process that described regular label is drawn comprises:
When described regular label is made up of multiple subgraph unit, the drawing practice of recursive call subgraph unit respectively;
When described regular label is element figure, carry out element figure drafting.
5. as claimed in claim 1 based on the map plotting method of Android operation system, it is characterized in that, described irregular label is drawn and is specially:
Utilize the equidistant partitioning algorithm of B-spline function, curve, ask the interior parallel segment algorithm of filling of certain some normal slope algorithm, the arrow technique of painting and/or closed domain on curve to draw irregular label.
6. as claimed in claim 1 based on the map plotting method of Android operation system, it is characterized in that, the reference mark of described regular label comprises translation reference mark, convergent-divergent reference mark and rotates reference mark; The reference mark of described irregular label comprises translation reference mark, convergent-divergent reference mark, rotates reference mark, Shape Control Point and anchor point.
7. as claimed in claim 6 based on the map plotting method of Android operation system, it is characterized in that, the process that described label controls comprises:
The OnTouchDown call back function provided by Android system catches the touch event on screen, and the screen coordinate that recording events occurs;
After touch action occurs, call all reference mark of the hitTest method traversal label of Marking class, when certain reference mark of existence, when making touch screen position in the effective coverage at described reference mark, return to described reference mark by call back function;
The current reference mark object chosen of buffer memory in the call back function of audiomonitor;
The OnTouchMove call back function provided by Android system catches screen slip event, and the screen coordinate of position occurs record slip event;
Screen slip event is passed to the current reference mark object chosen by the moveTo method calling reference mark;
Screen slip event is passed to label object by described reference mark object;
After label object reception to reference mark moving event, the type according to being moved reference mark carries out translation, convergent-divergent, rotation and/or shape-changing operation to this label, and is repainted on painting canvas by the label after operation.
8. as claimed in claim 7 based on the map plotting method of Android operation system, it is characterized in that, the contains method of the android.graphics.Region class provided by Android drawing interface judges touch screen position whether in effective coverage, reference mark.
9. based on a map plotting system for Android operation system, it is characterized in that, described system comprises element figure drafting module, regular label drafting module, irregular label drafting module mod sum label control module;
Described element figure drafting module is made up of the drawing classes inherited to AbstractDrawItem base class, for drawing line segment, broken line, circle, circular arc, ellipse and word;
Described regular label drafting module is unified to be encapsulated in Marking class, adopts integrated mode that each meta graph recognition is become complete regular label, and provide the interface of amendment label attribute in Marking class;
Described irregular label drafting module is made up of the drawing classes inherited to AbstractIrregularMark base class, for providing the rendering algorithm of irregular label;
Described label control module is made up of the control class inherited to AbstractAdjustHandle base class, draws and touch-control action listener for rotation, translation, convergent-divergent reference mark.
10., as claimed in claim 9 based on the map plotting system of Android operation system, it is characterized in that, the interface of described amendment label attribute comprises enlargement ratio interface, reference mark interface, position coordinates interface, tag interface, anglec of rotation interface.
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| CN105511794A (en) * | 2015-12-14 | 2016-04-20 | 中国电子科技集团公司第十五研究所 | Plotting system supporting multi-point touch gesture operation and method of system |
| CN107038199A (en) * | 2016-12-13 | 2017-08-11 | 阿里巴巴集团控股有限公司 | A kind of drawing practice and device |
| CN108268257A (en) * | 2016-12-29 | 2018-07-10 | 福建省天奕网络科技有限公司 | Lines track method for drafting and system applied to VR scenes |
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| CN109544658B (en) * | 2017-09-21 | 2022-03-25 | 腾讯科技（深圳）有限公司 | Map rendering method and device, storage medium and electronic device |
| CN109544658A (en) * | 2017-09-21 | 2019-03-29 | 腾讯科技（深圳）有限公司 | The rendering method and device of map, storage medium, electronic device |
| CN107705345A (en) * | 2017-09-30 | 2018-02-16 | 南威软件股份有限公司 | A kind of drawing method of the dynamic military symbol of situation plotting |
| CN107918538A (en) * | 2017-11-29 | 2018-04-17 | 南京邮电大学 | A kind of drafting system based on Andriod operating systems |
| CN109375980A (en) * | 2018-10-29 | 2019-02-22 | 四川长虹教育科技有限公司 | Touch-control drawing practice based on Andriod system |
| CN109375980B (en) * | 2018-10-29 | 2021-10-15 | 四川长虹教育科技有限公司 | Touch drawing method based on Andriod system |
| CN109871168A (en) * | 2019-01-24 | 2019-06-11 | 广东第二师范学院 | The mobile drawing practice of the scene of a traffic accident based on scalable vector graphics and device |
| CN110634171A (en) * | 2019-02-01 | 2019-12-31 | 天津完美引力科技有限公司 | Device and method for drawing map |
| CN110634171B (en) * | 2019-02-01 | 2024-02-27 | 北京完美知识科技有限公司 | Device and method for drawing map |
| CN115185435A (en) * | 2021-09-30 | 2022-10-14 | 红科网安(武汉)科技有限公司 | Method for controlling display of key drawing plotting special elements |
| CN116932121A (en) * | 2023-09-18 | 2023-10-24 | 中国电子科技集团公司第十五研究所 | Unified situation plotting method and system suitable for polymorphic service application |
| CN116932121B (en) * | 2023-09-18 | 2024-02-13 | 中国电子科技集团公司第十五研究所 | Unified situation plotting method and system suitable for polymorphic service application |
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