CN103679812B - The implementation method and device of geographic simple element three-dimensional linear model - Google Patents
The implementation method and device of geographic simple element three-dimensional linear model Download PDFInfo
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- CN103679812B CN103679812B CN201210364840.7A CN201210364840A CN103679812B CN 103679812 B CN103679812 B CN 103679812B CN 201210364840 A CN201210364840 A CN 201210364840A CN 103679812 B CN103679812 B CN 103679812B
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Abstract
The invention provides the implementation method and device of a kind of geographic simple element three-dimensional linear model, wherein implementation method includes：Construct the three-dimensional composite line type object of initialization；The three-dimensional composite line type object for initializing is split as section sub-line object and model sub-line object；Pair cross-section sub-line object is opened to cross sectional shape attribute interface and texture and material attribute interface；Critical point model attribute interface and relative line style position attribution interface are opened to model sub-line object；Three-dimensional composite line type object is assigned by attribute field information form a three-dimensional composite line type symbol for entirety；Assigning two-dimensional line data overall three-dimensional composite line type symbol carries out two three-dimensional conversions, is shown in three-dimensional scenic.The implementation method of the geographic simple element three-dimensional linear model provided using the present invention, line of vector data can be directly changed into three-dimensional line style data, without remaking three-dimensional line style data again, manpower and materials are not only saved, and reduce the cost of manufacture of three-dimensional line style.
Description
Technical field
The present invention relates to geographic information system technology field, especially, it is related to a kind of geographic simple element three-dimensional linear model
Implementation method and device.
Background technology
As GIS-Geographic Information System is commonly used in society, application of the people to three-dimensional scenic is also more and more deep.
The application of three-dimensional scenic is for line style atural object such as：The display of railway, water pipeline, highway, bridge etc., and for engineering design,
The applications such as pipeline system emulation have very practical meaning, while also having widened the range of application of traditional geography information.
At present in three dimension system field, the similar software of prior art for three-dimensional line style realization, mainly by tradition
Threedimensional model realize.Specially:According to user's request, a set of threedimensional model is made again on the basis of line style data
Data, show and realize three-dimensional line style by the way that threedimensional model is added in scene.
Although these three dimension system products or GIS-Geographic Information System product can support line style ground in the form of model shows
The displaying of thing, but because the line style of these products is derived from model, and making linear model needs substantial amounts of manpower and materials, undoubtedly increases
Plus human cost, and it is less efficient.For the data such as highway, railway, the data source of user is often vector
Line number evidence, if using the display mode of model, undoubtedly causing data redundancy and extra work amount, comes for system maintenance
Say, because needing to safeguard line of vector data and the sets of data of line model two, cause the increase of system maintenance cost.
In addition, there are some products in GIS-Geographic Information System in the market at present, for example：The ArcGIS series of products of ESRI,
Two-dimensional line data to the symbolism application of three-dimensional pipeline can be realized, i.e.,：Two-dimensional line data are converted into three-dimensional tube line number evidence.
But this technology is only capable of realizing the simple conversion of two three-dimensionals, it is impossible to the section of self-defined three-dimensional line style and surface texture, also without
Method carries out the setting and display of self-definedization for the implementation of user's actual items.Additionally, this technology does not support composite line type, example
Such as：The bridge pier of three-dimensional bridge cannot be directly generated by two-dimensional line data, it is still desirable to which user is manually for each bridge pier makes mould
Type, and the effect of " pipeline is included in pipeline " cannot be realized etc..
In a word, it is necessary to the technical problem that those skilled in the art urgently solve is exactly：How a kind of line of vector is created
The method that data are directly changed to three-dimensional line style object, it is possible to realize the self-defined setting to three-dimensional line style cross sectional shape.
The content of the invention
The technical problems to be solved by the invention are to provide the implementation method and dress of a kind of geographic simple element three-dimensional linear model
Put, can realize that line of vector data are directly changed to three-dimensional line style object.
In order to solve the above problems, on the one hand there is provided a kind of implementation method of geographic simple element three-dimensional linear model, including：
Construct the three-dimensional composite line type object of initialization；
The three-dimensional composite line type object of above-mentioned initialization is split as section sub-line object and model sub-line object；
The cross sectional shape attribute interface and texture material for allowing User Defined to set are opened to above-mentioned section sub-line object
Matter attribute interface；
The Critical point model attribute interface that allows User Defined to set and relative is opened to above-mentioned model sub-line object
Line style position attribution interface；
User is assigned the three-dimensional recombination line of above-mentioned initialization by the attribute field information that each above-mentioned attribute interface is set
Type object forms a three-dimensional composite line type symbol for entirety；
Assigning two-dimensional line data above-mentioned overall three-dimensional composite line type symbol carries out two three-dimensional conversions, in three-dimensional scenic
Display.
Preferably, the implementation method of above-mentioned geographic simple element three-dimensional linear model also includes：
Above-mentioned overall three-dimensional composite line type symbol is stored in symbolic library.
Accordingly, there is provided a kind of geographic simple element three-dimensional linear model realizes device, including：
Structural unit, the three-dimensional composite line type object for constructing initialization；
Split cells, for the three-dimensional composite line type object of above-mentioned initialization to be split as into section sub-line object and model
Line object；
First setting unit, for setting section sub-line pair by cross sectional shape attribute interface and texture and material attribute interface
The cross sectional shape of elephant, texture and material attribute；
Second setting unit, for setting model by Critical point model attribute interface and relative line style position attribution interface
The Critical point model attribute of sub-line object and relative line style position attribution；
Assignment unit, for each attribute field information that above-mentioned first setting unit, the second setting unit are set to be assigned
Above-mentioned section sub-line object and model sub-line object, obtain overall three-dimensional composite line type symbol；
Converting unit, the overall three-dimensional composite line type symbol for above-mentioned assignment unit to be obtained assigns two-dimensional line data
Carry out two three-dimensional conversions；
Display unit, for the conversion results that above-mentioned converting unit is obtained to be shown in three-dimensional scenic.
Preferably, above-mentioned geographic simple element three-dimensional linear model realizes device, also includes：
Memory cell, the overall three-dimensional composite line type symbol for above-mentioned assignment unit to be obtained is stored in symbolic library.
Compared with prior art, a technical scheme in above-mentioned technical proposal has advantages below or beneficial effect：
The implementation method of the geographic simple element three-dimensional linear model provided using the present invention, user can be with self-defined three-dimensional line style
Cross sectional shape, and self-defined texture mapping can be carried out for three-dimensional line type surface.User can be in the key of three-dimensional line style
Through model is set at point, for example：Every ten meters of placement bridge piers along an overpass three-dimensional line data.To can swear
Amount line number, without remaking three-dimensional line style data again, not only saves manpower and materials according to three-dimensional line style data are directly changed into,
The cost of manufacture of the three-dimensional line style of geographical elementary factor is reduced, and improves the making of the three-dimensional line style of geographical elementary factor
Efficiency, further increases the producing efficiency of electronic three-dimensional map.
Brief description of the drawings
Fig. 1 is the schematic diagram of the implementation method embodiment of geographic simple element three-dimensional linear model of the present invention；
Fig. 2 is the schematic diagram of another embodiment of implementation method of geographic simple element three-dimensional linear model of the present invention；
Fig. 3 is the structured flowchart for realizing device embodiment of geographic simple element three-dimensional linear model of the present invention；
Fig. 4 is the structured flowchart for realizing device preferred embodiment of geographic simple element three-dimensional linear model of the present invention.
Specific embodiment
It is below in conjunction with the accompanying drawings and specific real to enable the above objects, features and advantages of the present invention more obvious understandable
The present invention is further detailed explanation to apply mode.
Reference picture 1, the invention provides a kind of implementation method embodiment of geographic simple element three-dimensional linear model, including：
Step 1, the three-dimensional composite line type object of construction initialization, such as：Shu He roads.Wherein, road be pre-structured three-dimensional answer
In itself, tree is the crucial point-like model in the three-dimensional composite line type object of pre-structured to three-dimensional line style in zygonema type object.
Step 3, the three-dimensional composite line type object of above-mentioned initialization is split as section sub-line object and model sub-line object.
Step 3 is specially：The storage inside form of above-mentioned three-dimensional composite line type object is split as two subobjects, respectively
It is " section sub-line " object and " model sub-line " object.
Above-mentioned two subobject independently of one another, possesses each independent memory space.Wherein, above-mentioned section sub-line correspondence three
Dimension line style feature in itself, such as feature on road.The crucial point-like model of above-mentioned model sub-line corresponding three-dimensional line style, such as spy of tree
Levy.
Step 5, to above-mentioned section sub-line object be opened to allow User Defined set cross sectional shape attribute interface and
Texture and material attribute interface.
In step 5, the cross sectional shape attribute interface that section sub-line object is opened to is mainly used in user to above-mentioned three-dimensional line
Type sets cross sectional shape in itself.The texture and material attribute interface that section sub-line object is opened to, is mainly used in user to above-mentioned three
Dimension line style sets the features such as surface texture textures, texturing in itself.Above-mentioned surface texture textures include three-dimensional line style in itself
The features such as texture, color.
Step 7, the Critical point model attribute interface that permission User Defined setting is opened to above-mentioned model sub-line object
With relative line style position attribution interface.
In step 7, the Critical point model attribute interface that model sub-line object is opened to is mainly used in user to above-mentioned key
Point model carries out attribute setting, for example, key point is defined as into the adjuncts such as tree, the bridge pier of overpass in roadside.Model sub-line
The relative line style position attribution interface that object is opened to, is mainly used in user and sets above-mentioned crucial point-like model relative to three-dimensional line
Type relative position in itself, for example, set tree relative to the position on road, bridge pier relative to overpass position etc..
Step 9, the three-dimensional that user is assigned above-mentioned initialization by the attribute field information that above-mentioned each attribute interface is set
Composite line type object forms a three-dimensional composite line type symbol for entirety.
Specially：User sets three-dimensional line style in itself and the attribute of crucial point-like model by above-mentioned each attribute interface
Afterwards, a complete three-dimensional composite line type symbol is generated, for example, Shu He roads, the side determining deviation kind on road is implanted with tree.
Step 11, two-dimensional line data are assigned above-mentioned three-dimensional composite line type symbol, two three-dimensional conversions are carried out, in three-dimensional scenic
Middle display.For example, determining deviation kind is planted trees along the road three-dimensional line data of certain length, or in an overpass three-dimensional line number
Every ten meters of placement bridge piers etc. along.
The implementation method of the geographic simple element three-dimensional linear model provided using the present invention, user can be with self-defined three-dimensional line style
Cross sectional shape, and self-defined texture mapping can be carried out for three-dimensional line type surface.User can be in the key of three-dimensional line style
Through model is set at point, for example：Every ten meters of placement bridge piers along an overpass three-dimensional line data.To can swear
Amount line number, without remaking three-dimensional line style data again, not only saves manpower and materials according to three-dimensional line style data are directly changed into,
The cost of manufacture of the three-dimensional line style of geographical elementary factor is reduced, and improves the making of the three-dimensional line style of geographical elementary factor
Efficiency, further increases the producing efficiency of electronic three-dimensional map.
On the basis of the implementation method embodiment of the geographic simple element three-dimensional linear model shown in Fig. 1, the present invention is also provided
Another embodiment of implementation method of geographic simple element three-dimensional linear model, reference picture 2, the realization of geographic simple element three-dimensional linear model
Method can also include：
Step 10, above-mentioned overall three-dimensional composite line type symbol is stored in symbolic library.
The step of other steps of the present embodiment are with embodiment illustrated in fig. 1 is identical, and here is omitted.
Three-dimensional composite line type symbolic library, convenient three-dimensional line style symbol can be set up or be updated to the step of by increasing by 10, system
Number recycling, the making of three-dimensional map provides facility for after.
For foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of combination of actions, but
It is that those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to the present invention, certain
A little steps can sequentially or simultaneously be carried out using other.Secondly, those skilled in the art should also know, be retouched in specification
The embodiment stated belongs to preferred embodiment, necessary to involved action and the module not necessarily present invention.
The implementation method embodiment of the above-mentioned geographic simple element three-dimensional linear model of correspondence, present invention also offers a kind of geographical letter
Single key element three-dimensional line style realizes device, is illustrated with reference to Fig. 3,4.
Reference picture 3, shows the structured flowchart for realizing device embodiment of geographic simple element three-dimensional linear model of the present invention, bag
Include：
Structural unit 31, the three-dimensional composite line type object for constructing initialization；
Split cells 33, for the three-dimensional composite line type object of above-mentioned initialization to be split as into section sub-line object and model
Sub-line object；
Wherein, the three-dimensional line style of above-mentioned section sub-line object corresponding three-dimensional composite line type object is in itself；Above-mentioned model sub-line
The crucial point-like model of object corresponding three-dimensional composite line type object.
First setting unit 35, for setting section sub-line by cross sectional shape attribute interface and texture and material attribute interface
The attributes such as cross sectional shape, the texture and material of object；
First setting unit 35 is presented as cross sectional shape attribute interface and texture and material attribute interface, user in user interface
It is configured by above-mentioned interface pair cross-section sub-line, the result of setting is presented as three-dimensional line style shape, surface texture material in itself
The attributes such as matter；
Second setting unit 37, for setting mould by Critical point model attribute interface and relative line style position attribution interface
The Critical point model attribute of type sub-line object and relative line style position attribution, key point mould is assigned by above-mentioned attribute field information
Type；
Second setting unit 37 is presented as that Critical point model attribute interface and relative line style position attribution connect in user interface
Mouthful, user is configured by above-mentioned interface to model sub-line, and the result of setting is presented as Critical point model and Critical point model
Relative to three-dimensional line style position feature in itself.
Assignment unit 38, each attribute field information for the first setting unit 35, the second setting unit 37 to be set is assigned
Section sub-line object and model sub-line object are given, overall three-dimensional composite line type symbol is obtained.
Converting unit 39, the overall three-dimensional composite line type symbol for assignment unit 38 to be obtained assigns two-dimensional line data
Carry out two three-dimensional conversions.
Display unit 311, for the conversion results that converting unit 39 is obtained to be shown in three-dimensional scenic.
Fig. 4 shows the structured flowchart for realizing device preferred embodiment of geographic simple element three-dimensional linear model of the present invention, also
Including：
Memory cell 310, the above-mentioned overall three-dimensional composite line type symbol for assignment unit 38 to be obtained is stored in symbol
In storehouse, for multiplexing.
Each embodiment in this specification is described by the way of progressive, what each embodiment was stressed be with
The difference of other embodiment, between each embodiment identical similar part mutually referring to.For device embodiment
For, because it is substantially similar to embodiment of the method, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
Defend oneself bright.
Above to a kind of implementation method of geographic simple element three-dimensional linear model provided by the present invention, and a kind of geographical letter
Single key element three-dimensional line style realizes device, is described in detail, specific case used herein to principle of the invention and
Implementation method is set forth, and the explanation of above example is only intended to help and understands the method for the present invention and its core concept；
Simultaneously for those of ordinary skill in the art, according to thought of the invention, can in specific embodiments and applications
There is change part, to sum up above-mentioned, this specification content should not be construed as limiting the invention.
Claims (2)
1. a kind of implementation method of geographic simple element three-dimensional linear model, it is characterised in that including：
Construct the three-dimensional composite line type object of initialization；
The three-dimensional composite line type object of the initialization is split as section sub-line object and model sub-line object；
The cross sectional shape attribute interface and texture and material category for allowing User Defined to set are opened to the section sub-line object
Property interface；
The Critical point model attribute interface and relative line style for allowing User Defined to set are opened to the model sub-line object
Position attribution interface；
User is assigned the three-dimensional composite line type pair of the initialization by the attribute field information that each attribute interface is set
Pictograph is into a three-dimensional composite line type symbol for entirety；The overall three-dimensional composite line type symbol is stored in symbolic library；
Assigning two-dimensional line data the overall three-dimensional composite line type symbol carries out two three-dimensional conversions, shows in three-dimensional scenic
Show.
2. a kind of geographic simple element three-dimensional linear model realizes device, it is characterised in that including：
Structural unit, the three-dimensional composite line type object for constructing initialization；
Split cells, for the three-dimensional composite line type object of the initialization to be split as into section sub-line object and model sub-line pair
As；
First setting unit, for setting section sub-line object by cross sectional shape attribute interface and texture and material attribute interface
Cross sectional shape, texture and material attribute；
Second setting unit, for setting model sub-line by Critical point model attribute interface and relative line style position attribution interface
The Critical point model attribute of object and relative line style position attribution；
Assignment unit, it is described for each attribute field information that first setting unit, the second setting unit are set to be assigned
Section sub-line object and model sub-line object, obtain overall three-dimensional composite line type symbol；
Converting unit, the overall three-dimensional composite line type symbol for the assignment unit to be obtained assigns two-dimensional line data and carries out
Two three-dimensional conversions；
Display unit, for the conversion results that the converting unit is obtained to be shown in three-dimensional scenic；
Memory cell, the overall three-dimensional composite line type symbol for the assignment unit to be obtained is stored in symbolic library.
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Address after: 100016 Six Floors, 107 Floor, IT Industrial Park, Electronic City, No. 10 Jiayuan, North Jiuxianqiao Road, Chaoyang District, Beijing Patentee after: SuperMap Software Co., Ltd. Address before: 100015 Beijing Chaoyang District Jiuxianqiao North Road No. 10 Electronic City IT Industrial Park 201F E Gate 3 Floor Patentee before: SuperMap Software Co., Ltd. |