CN114791800A - White-model building edge tracing method and device, computer equipment and storage medium - Google Patents
White-model building edge tracing method and device, computer equipment and storage medium Download PDFInfo
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- CN114791800A CN114791800A CN202210706141.XA CN202210706141A CN114791800A CN 114791800 A CN114791800 A CN 114791800A CN 202210706141 A CN202210706141 A CN 202210706141A CN 114791800 A CN114791800 A CN 114791800A
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Abstract
The embodiment of the invention discloses a white mould building edge tracing method, a white mould building edge tracing device, computer equipment and a storage medium. The method comprises the following steps: analyzing the GeoJson data; setting a two-dimensional data array; extracting geometric white mould building height information; traversing the two-dimensional data array; creating a vertex array and an inner hole array, and determining the data arrangement direction of the current ring to obtain a first direction; traversing the residual ring array data in the two-dimensional data array by using while circulation; judging whether the data arrangement direction of the traversed current ring is consistent with the first direction or not; if yes, determining a vertex index; creating a position data array; constructing index data of a top surface sheet; constructing stroking index data; constructing side index data; judging whether the two-dimensional data array is traversed completely; and if so, constructing the geometric white mould outline building. By implementing the method provided by the embodiment of the invention, the requirement of any art designer is not needed, the requirement of personnel cost is reduced, the memory consumption in the process of drawing the model is reduced, and the rendering performance is improved.
Description
Technical Field
The invention relates to a GIS geometric white mould edge-drawing processing method, in particular to a white mould building edge-drawing method, a white mould building edge-drawing device, computer equipment and a storage medium.
Background
The GIS (Geographic Information System) has a large number of buildings, the geometric building white template delineation effect is manually completed, the process is complicated, mistakes and omissions are easily caused, the geometric white template delineation visual effect is completed through general post-processing, and the geometric white template building delineation visual effect is difficult to compare with the real single geometric building white template delineation, or after the geometric building is stretched and created, the wireframe additional delineation effect of the white template building is used, the rendering performance is poor, and the memory consumption is high.
In the actual development process, the geometric white-model buildings with the delineation are an important scene style, and are particularly used for night scenes with science and technology senses, such as smart cities. The drawing is luminous and semitransparent top surface and side surface building effect, but general program developers can hardly realize the effect, most of the drawing can only manually set and manufacture geometric drawing building white molds of a designated area by art workers, and the drawing is difficult to process data of national or global scales.
Therefore, it is necessary to design a new method, which does not require any art designing intervention, reduces the personnel cost requirement, reduces the memory consumption in the model drawing process, and improves the rendering performance.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a white model building edge tracing method, a white model building edge tracing device, computer equipment and a storage medium.
In order to realize the purpose, the invention adopts the following technical scheme: the white-model building delineation method comprises the following steps:
acquiring GeoJson data, and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data;
setting a two-dimensional data array, and storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring;
extracting geometric white mould building height information from the GeoJson data;
traversing the two-dimensional data array;
creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and the next vertex can be organized into a line, and determining the data arrangement direction of the current ring to obtain a first direction;
traversing the residual ring array data in the two-dimensional data array by means of while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether a current point and a next point can be organized into a line or not by means of the vertex array, and synchronizing the data marks to the inner hole array;
judging whether the data arrangement direction of the traversed current ring is consistent with the first direction or not;
if the data arrangement direction of the traversed current ring is consistent with the first direction, triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method to obtain a vertex index;
creating a position data array, and collecting top vertex coordinates and bottom vertex coordinates of the geometric building;
constructing top surface patch index data of the geometric building according to the vertex index;
constructing stroke index data of the geometric white mould stroke building according to the top vertex coordinates and the bottom vertex coordinates;
constructing side index data of the geometric white mould stroked side building according to the top vertex coordinates and the bottom vertex coordinates;
judging whether the two-dimensional data array is traversed completely;
and if the two-dimensional data array is traversed, constructing a geometric white mould delineator building by using the side index data, the top surface patch index data, the delineator index data, the top vertex coordinates and the bottom vertex coordinates.
The further technical scheme is as follows: after judging whether the data arrangement direction of the traversed current ring is consistent with the first direction, the method further includes:
and if the data arrangement direction of the traversed current ring is not consistent with the first direction, executing the traversing of the data of the rest rings in the two-dimensional data array by using while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether the current point and the next point can be organized into a line or not by using a vertex array, and synchronizing the data marks to the inner hole array.
The further technical scheme is as follows: after judging whether the two-dimensional data array is completely traversed, the method further comprises:
and if the two-dimensional data array is not traversed completely, executing the traversal of the two-dimensional data array.
The further technical scheme is as follows: the setting of the two-dimensional data array, storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring, and comprises the following steps:
and creating a two-dimensional data array, wherein the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data are stored in the ring, the ring data are divided into an inner ring and an outer ring, the two-dimensional data array organizes ring arrays according to the inner ring and the outer ring in an alternating mode, and zero or more inner ring data follow one outer ring array.
The further technical scheme is as follows: the geometric white mold building height information is information for white mold geometric building height stretching.
The further technical scheme is as follows: the odd subscripts of the position data array are used for storing the positions of the top vertexes, the even subscripts of the position data array are used for storing the subscripts of the bottom vertexes, and the height difference between the bottom and the top is determined by the height information of the white geometric model building.
The invention also provides a white mould building edge painting device, which comprises:
the data processing unit is used for acquiring GeoJson data and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data;
the array setting unit is used for setting a two-dimensional data array and storing vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring;
the height extraction unit is used for extracting geometric white mould building height information from the GeoJson data;
the first traversal unit is used for traversing the two-dimensional data array;
the array creating unit is used for creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and a next vertex can be organized into a line, and determining the data arrangement direction of the current ring to obtain a first direction;
the second traversal unit is used for circularly traversing the data of the rest rings in the two-dimensional data array by using while, collecting the data marks of whether the current vertex position, the next vertex subscript, the current point and the next point can be organized into a line or not by using the vertex array, and synchronizing the data marks to the inner hole array;
the first judging unit is used for judging whether the data arrangement direction of the traversed current ring is consistent with the first direction or not;
the triangulation unit is used for triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method if the data arrangement direction of the traversed current ring is consistent with the first direction so as to obtain a vertex index;
the collection unit is used for creating a position data array and collecting the top vertex coordinates and the bottom vertex coordinates of the geometric building;
the first construction unit is used for constructing top surface patch index data of the geometric building according to the vertex index;
the second construction unit is used for constructing the stroking index data of the geometric white mould stroking building according to the top vertex coordinates and the bottom vertex coordinates;
the third construction unit is used for constructing side index data of the geometric white mould stroked building according to the top vertex coordinates and the bottom vertex coordinates;
the second judging unit is used for judging whether the two-dimensional data array is traversed or not;
and the building construction unit is used for constructing a geometric white mould delineator by using the side index data, the top surface patch index data, the delineator index data, the top vertex coordinate and the bottom vertex coordinate if the two-dimensional data array is traversed.
The further technical scheme is as follows: the array creating unit is used for creating a two-dimensional data array, the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data are stored in the ring, the ring data are divided into an inner ring and an outer ring, the two-dimensional data array organizes the ring arrays in an inner ring and outer ring alternating mode, and zero or more inner ring data follow one outer ring array.
The invention also provides a computer device, which comprises a memory and a processor, wherein the memory is stored with a computer program, and the processor executes the computer program to realize the method.
The invention also provides a storage medium storing a computer program which, when executed by a processor, implements the method described above.
Compared with the prior art, the invention has the beneficial effects that: in the process of creating the geometric white mould building, the geometric vertex data is analyzed, the lower table of the vertex is utilized to assemble the stroke, the stroke data and the geometric white mould use the same vertex position data, so that the method does not need any art designing intervention, reduces the personnel cost requirement, reduces the memory consumption in the model drawing process, and improves the rendering performance.
The invention is further described below with reference to the figures and the specific embodiments.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic view of an application scenario of a white-form building delineation method provided in an embodiment of the present invention;
fig. 2 is a schematic flow chart of a white-form building delineation method provided by an embodiment of the present invention;
FIG. 3 is a schematic block diagram of a white model building stroking apparatus provided by an embodiment of the present invention;
fig. 4 is a schematic block diagram of a computer device provided in 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic view of an application scenario of a white-model building delineation method according to an embodiment of the present invention. Fig. 2 is a schematic flow chart of a white-form building delineation method provided by an embodiment of the present invention. The white-model building delineation method is applied to a server. The server performs data interaction with the terminal, in the process of creating the geometric white mould, the geometric vertex data is analyzed, the vertex subscript is utilized to assemble a wire frame, the geometric white mould building edge tracing effect is achieved, the performance overhead of creating the edge tracing is reduced, the edge tracing data and the geometric white mould use the same vertex position data, the memory consumption in the model drawing process is reduced, the process is completed completely by a program without any art designing intervention, the personnel cost requirement is reduced, the program developer is greatly facilitated to achieve the geometric white mould edge tracing effect, and the developer can conveniently extend to achieve a user-defined edge tracing style.
The method of the embodiment is not limited to any WEBGL engine, and at present, a 3D basic environment is built on the basis of a threejs engine for displaying the GIS geometric edge tracing white model building.
Fig. 2 is a schematic flow chart of a white-form building delineation method provided by an embodiment of the present invention. As shown in fig. 2, the method includes the following steps S110 to S240.
S110, GeoJson data are obtained and analyzed to obtain point data, line data and surface vertex data in the GeoJson data.
In this embodiment, GeoJSON is a format for encoding various geographic data structures, and is a geospatial information data exchange format based on Javascript Object Notation (JSON for short). The GeoJSON object may represent a geometry, a feature, or a set of features. GeoJSON supports the following geometry types: point, line, plane, multipoint, multiline, polyhedral and geometric collections.
In this embodiment, the GeoJson data is analyzed, and the points, lines, and planes are classified according to different data types, so that point data, line data, and vertex data of the planes in the GeoJson data are obtained, and relevant description information of the GeoJson data, specifically description information of relevant geometric white modes, can be obtained.
And S120, setting a two-dimensional data array, and storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring.
In the present embodiment, the two-dimensional data array refers to an array for storing vertex data.
The method comprises the steps of extracting surface data, setting two-dimensional data arrays, alternately organizing the data arrays according to outer rings and inner rings, taking each ring as an array, taking an inner ring array behind the outer ring as an inner ring of the current outer ring for hole digging, storing each inner ring or outer ring as an array in the two-dimensional data arrays, and arranging a plurality of inner ring arrays behind one outer ring array.
Specifically, the two-dimensional data array is equivalent to a data memory, data memory storage ring array data is created, each ring is also a class array object, vertex position data of current ring data is stored in each ring, the ring data is divided into an inner ring and an outer ring, the memory needs to organize the ring arrays in an inner ring and outer ring alternating mode, and zero or more inner ring data can be arranged behind one outer ring array.
Specifically, a two-dimensional data array is created, the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data is stored in the ring, the ring data is divided into an inner ring and an outer ring, the two-dimensional data array organizes the ring arrays in an inner ring and outer ring alternating mode, and zero or more inner ring data follow one outer ring array.
S130, extracting geometric white mould building height information from the GeoJson data.
In this embodiment, the geometric white mold building height information is information for white mold geometric building height stretching, and is particularly useful for controlling white mold height.
And S140, traversing the two-dimensional data array.
In this embodiment, each traversal object is a one-dimensional array.
S150, creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and a next vertex can form a line, and determining the data arrangement direction of the current ring to obtain a first direction.
In this embodiment, a one-dimensional array is traversed, vertex information of a current ring is stored in the array, a data arrangement direction of the current ring is obtained and recorded, the data arrangement direction is clockwise or counterclockwise, a vertex array and an inner hole vertex array are created, and vertex coordinate information, a next vertex index and whether a current vertex can be connected with a next vertex to form a line are collected by using the vertex array.
And S160, traversing the residual ring array data in the two-dimensional data array by using while circulation, collecting the data marks of whether the current vertex position, the next vertex subscript, the current point and the next point can be organized into a line or not by using the vertex array, and synchronizing the data marks to the inner hole array.
Specifically, while traversing the inner ring data contained in the current outer ring in a while loop, judging whether the current inner ring belongs to the inner ring, collecting vertex data information of the inner ring by using a vertex array when the current inner ring belongs to the inner ring, wherein the vertex data information comprises vertex coordinates, next vertex indexes and information whether the current vertex coordinates can be connected with the next point to form a line, synchronizing the data to the inner hole array, and jumping out of the loop if the current inner ring does not belong to the outer ring.
S170, judging whether the data arrangement direction of the traversed current ring is consistent with the first direction;
if the data arrangement direction of the traversed current ring is not consistent with the first direction, the step S160 is executed.
And S180, if the data arrangement direction of the traversed current ring is consistent with the first direction, triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method to obtain a vertex index.
In the present embodiment, the vertex index refers to a result obtained by triangulating vertex data of an inner circle and vertex data of an outer circle by the ear-cutting method.
Specifically, vertex data and vertex data of the outer ring are triangulated through an ear cutting method, and a vertex index of the whole geometric body is obtained.
And obtaining the obtained vertex data storage object and the inner hole vertex data storage object, and carrying out triangulation by an ear cutting method.
S190, creating a position data array, and collecting the top vertex coordinates and the bottom vertex coordinates of the geometric building.
In this embodiment, the stroking geometric white mold is composed of a top surface, a side surface, a bottom surface and a stroking line. And creating a position array for collecting top vertex data and bottom vertex data, wherein the odd subscript of the position array stores the top vertex coordinates of the geometric white mould, the even subscript of the array stores the bottom vertex coordinates of the geometric white mould, and the height between the bottom and the top is determined by the building height information of the geometric white mould.
And S200, constructing top patch index data of the geometric building according to the vertex index.
In the present embodiment, the top patch index data refers to an index for generating a top patch, and in particular, a top triangle patch for generating a geometric white model building.
And S210, constructing stroke index data of the geometric white mould stroke building according to the top vertex coordinates and the bottom vertex coordinates.
In this embodiment, the stroke index data is index data for generating a set building stroke.
Specifically, geometric building delineators are generated using bottom vertex coordinates and top vertex coordinates, and the delineator vertex index subscript information is collected.
And S220, constructing side index data of the geometric white mould stroked building according to the top vertex coordinates and the bottom vertex coordinates.
In the present embodiment, the side index data refers to index data for generating geometric building side patches.
Specifically, the bottom vertex coordinates and the top vertex coordinates generate geometric building side patches and side vertex index subscript information is collected.
S230, judging whether the two-dimensional data array is traversed or not;
if the two-dimensional data array is not traversed, step S140 is executed.
S240, if the two-dimensional data array is completely traversed, constructing a geometric white-mould depicting building by using the side index data, the top surface patch index data, the depicting edge index data, the top vertex coordinates and the bottom vertex coordinates.
Specifically, the geometric edge tracing white model building is assembled through collected vertex coordinate information, edge tracing vertex index information, top surface patch index information and side surface patch index information.
The process of creating the stroke is performed in the process of assembling the white mould, the white mould stroke flow is prevented from being performed again after the white mould creation is completed, and the calculation overhead of a main thread CPU in the stroke process can be reduced. Because only the subscript of the stroke vertex is created in the stroke process, the stroke vertex data and the geometric white modulus data are shared, the video memory consumption in the GPU rendering process is reduced, the overall rendering performance of the geometric white mould building is improved, the threshold for developing the stroke effect is reduced, the development of the display effect of the GIS geometric white mould building is promoted, and more GIS effect selectable display modes are provided for the art designer.
Judging whether the two-dimensional data array is traversed or not, if so, generating a geometric building delineation through the acquired geometric building coordinate information and delineation vertex index data, generating a geometric building top surface patch through the top surface patch index data and the geometric building vertex information, generating a geometric building side surface patch through the side surface patch index and the geometric building vertex information, assembling a geometric building by utilizing the information, and generating a high-performance delineation geometric white-model building; and if the ring array is not completely traversed, continuing to traverse the ring array.
According to the method, in the process of creating the geometric white mould, the geometric white mould building edge tracing effect is achieved by analyzing the geometric vertex data and assembling the wire frame by using the vertex subscripts, the performance overhead of creating the edge tracing is reduced, the same vertex position data is used for the edge tracing data and the geometric white mould, the memory consumption in the model drawing process is reduced, the process is completed completely by a program, no art designing intervention is needed, the personnel cost requirement is reduced, the geometric white mould edge tracing effect is greatly facilitated for a program developer, and the developer can conveniently expand to achieve the custom edge tracing style.
According to the white-model building edge tracing method, the geometric vertex data is analyzed in the process of creating the geometric white-model building, the edge tracing is assembled by using the lower table of the vertex, the edge tracing data and the geometric white model use the same vertex position data, so that the method is free of any art designing intervention, the personnel cost requirement is reduced, the memory consumption in the model drawing process is reduced, and the rendering performance is improved.
Fig. 3 is a schematic block diagram of a white model building stroking apparatus 300 according to an embodiment of the present invention. As shown in fig. 3, the invention further provides a white model building edging device 300 corresponding to the above white model building edging method. The white model building edging apparatus 300 includes a unit for performing the white model building edging method described above, and may be configured in a server. Specifically, referring to fig. 3, the white model architecture delineation apparatus 300 includes a data processing unit 301, an array setting unit 302, a height extraction unit 303, a first traversal unit 304, an array creation unit 305, a second traversal unit 306, a first judgment unit 307, a triangularization unit 308, a collection unit 309, a first construction unit 310, a second construction unit 311, a third construction unit 312, a second judgment unit 313, and an architecture construction unit 314.
The data processing unit 301 is configured to obtain GeoJson data and analyze the GeoJson data to obtain point data, line data, and vertex data of a surface in the GeoJson data; an array setting unit 302, configured to set a two-dimensional data array, and store vertex data of an outer ring and a vertex data of an inner ring in the two-dimensional data array; a height extraction unit 303, configured to extract geometric white-mode building height information from the GeoJson data; a first traversal unit 304 for traversing the two-dimensional data array; an array creating unit 305, configured to create a vertex array and an inner hole array, traverse vertex data of an outer ring, collect vertex coordinate information, next vertex index data, and flag data indicating whether a current vertex and a next vertex can be organized into a line, and determine a data arrangement direction of the current ring to obtain a first direction; the second traversal unit 306 is configured to loop through the remaining loop array data in the two-dimensional data array by using while, collect, by using the vertex array, a data flag indicating whether a current vertex position, a next vertex subscript, and a current point and a next point can be organized into a line, and synchronize the data flag to the inner hole array; a first judging unit 307, configured to judge whether a data arrangement direction of the traversed current ring is consistent with a first direction; a triangularization unit 308, configured to triangulate, if the data arrangement direction of the traversed current ring is consistent with the first direction, vertex data of the inner ring and vertex data of the outer ring by using an ear-cutting method, so as to obtain a vertex index; a collecting unit 309 for creating a position data array and collecting top vertex coordinates and bottom vertex coordinates of the geometric building; a first constructing unit 310, configured to construct top patch index data of a geometric building according to the vertex index; a second constructing unit 311, configured to construct stroke index data of the geometric white-model stroke building according to the top vertex coordinates and the bottom vertex coordinates; a third constructing unit 312, configured to construct, according to the top vertex coordinates and the bottom vertex coordinates, side index data of the geometric white template stroked building; a second determining unit 313, configured to determine whether the two-dimensional data array has been traversed; and the building construction unit 314 is configured to construct a geometric white-mold delineator building by using the side index data, the top patch index data, the delineator index data, the top vertex coordinates, and the bottom vertex coordinates if the two-dimensional data array is completely traversed.
In an embodiment, the array creating unit 305 is configured to create a two-dimensional data array, where the two-dimensional data array takes a ring as a class array object, the ring stores vertex position data of current ring data, the ring data is divided into an inner ring and an outer ring, the two-dimensional data array organizes ring arrays in an alternating manner of inner ring and outer ring, and one outer ring array is followed by zero or more inner ring data.
It should be noted that, as will be clear to those skilled in the art, the specific implementation process of the white model architecture edge painting apparatus 300 and each unit may refer to the corresponding description in the foregoing method embodiments, and for convenience and brevity of description, no further description is provided herein.
The white model building delineation apparatus 300 described above may be implemented in the form of a computer program that may be run on a computer device as shown in fig. 4.
Referring to fig. 4, fig. 4 is a schematic block diagram of a computer device according to an embodiment of the present application. The computer device 500 may be a server, wherein the server may be an independent server or a server cluster composed of a plurality of servers.
Referring to fig. 4, the computer device 500 includes a processor 502, memory, and a network interface 505 connected by a system bus 501, where the memory may include a non-volatile storage medium 503 and an internal memory 504.
The non-volatile storage medium 503 may store an operating system 5031 and computer programs 5032. The computer program 5032 comprises program instructions that, when executed, cause the processor 502 to perform a white model building delineation method.
The processor 502 is used to provide computing and control capabilities to support the operation of the overall computer device 500.
The internal memory 504 provides an environment for the execution of the computer program 5032 in the non-volatile storage medium 503, and when the computer program 5032 is executed by the processor 502, the processor 502 can be enabled to perform a white model architectural delineation method.
The network interface 505 is used for network communication with other devices. Those skilled in the art will appreciate that the configuration shown in fig. 4 is a block diagram of only a portion of the configuration associated with aspects of the present application, and is not intended to limit the computing device 500 to which aspects of the present application may be applied, and that a particular computing device 500 may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
Wherein the processor 502 is configured to run the computer program 5032 stored in the memory to implement the following steps:
acquiring GeoJson data, and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data; setting a two-dimensional data array, and storing vertex data in the two-dimensional data array according to the vertex data of an outer ring and an inner ring; extracting geometric white mould building height information from the GeoJson data; traversing the two-dimensional data array; creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and the next vertex can be organized into a line, and determining the data arrangement direction of the current ring to obtain a first direction; traversing the residual ring array data in the two-dimensional data array by means of while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether a current point and a next point can be organized into a line or not by means of the vertex array, and synchronizing the data marks to the inner hole array; judging whether the data arrangement direction of the traversed current ring is consistent with the first direction; if the data arrangement direction of the traversed current ring is consistent with the first direction, triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method to obtain a vertex index; creating a position data array, and collecting top vertex coordinates and bottom vertex coordinates of the geometric building; constructing top surface patch index data of the geometric building according to the vertex index; constructing stroke index data of the geometric white mould stroke building according to the top vertex coordinates and the bottom vertex coordinates; constructing side index data of the geometric white mould stroked side building according to the top vertex coordinates and the bottom vertex coordinates; judging whether the two-dimensional data array is traversed completely; and if the two-dimensional data array is completely traversed, constructing a geometric white mould depicting building by using the side index data, the top surface patch index data, the depicting edge index data, the top vertex coordinate and the bottom vertex coordinate.
Wherein the geometric white mold building height information is information for white mold geometric building height stretching.
The odd subscript of the position data array is used for storing the top vertex position, the even subscript of the position data array is used for storing the bottom vertex subscript, and the height difference between the bottom and the top is determined by the geometric white mould building height information.
In an embodiment, after implementing the step of determining whether the data arrangement direction of the traversed current ring is consistent with the first direction, the processor 502 further implements the following steps:
and if the data arrangement direction of the traversed current ring is not consistent with the first direction, executing the traversing of the data of the rest rings in the two-dimensional data array by using while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether the current point and the next point can be organized into a line or not by using a vertex array, and synchronizing the data marks to the inner hole array.
In an embodiment, after implementing the step of determining whether the two-dimensional data array has been traversed, the processor 502 further implements the following steps:
and if the two-dimensional data array is not traversed completely, executing the traversal of the two-dimensional data array.
In an embodiment, when the processor 502 implements the steps of setting the two-dimensional data array and storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring, the following steps are specifically implemented:
and creating a two-dimensional data array, wherein the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data are stored in the ring, the ring data are divided into an inner ring and an outer ring, the two-dimensional data array organizes ring arrays according to the inner ring and the outer ring in an alternating mode, and zero or more inner ring data follow one outer ring array.
It should be understood that, in the embodiment of the present Application, the Processor 502 may be a Central Processing Unit (CPU), and the Processor 502 may also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. Wherein a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will be understood by those skilled in the art that all or part of the flow of the method implementing the above embodiments may be implemented by a computer program instructing relevant hardware. The computer program includes program instructions, and the computer program may be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the flow steps of the embodiments of the method described above.
Accordingly, the present invention also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program, when executed by a processor, causes the processor to perform the steps of:
acquiring GeoJson data, and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data;
setting a two-dimensional data array, and storing vertex data in the two-dimensional data array according to the vertex data of an outer ring and an inner ring;
extracting geometric white mould building height information from the GeoJson data; traversing the two-dimensional data array; creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and the next vertex can be organized into a line, and determining the data arrangement direction of the current ring to obtain a first direction; traversing the residual ring array data in the two-dimensional data array by using while circulation, collecting a data mark of whether the current vertex position, the subscript of the next vertex and the current point and the next point can be organized into a line by using a vertex array, and synchronizing the data mark to the inner hole array; judging whether the data arrangement direction of the traversed current ring is consistent with the first direction; if the data arrangement direction of the traversed current ring is consistent with the first direction, triangularizing the vertex data of the inner ring and the vertex data of the outer ring through an ear-cutting method to obtain a vertex index; creating a position data array, and collecting top vertex coordinates and bottom vertex coordinates of the geometric building; constructing top surface patch index data of the geometric building according to the vertex index; constructing delineation index data of the geometric white mould delineation building according to the top vertex coordinates and the bottom vertex coordinates; constructing side index data of the geometric white mould outline building according to the top vertex coordinates and the bottom vertex coordinates; judging whether the two-dimensional data array is traversed completely; and if the two-dimensional data array is traversed, constructing a geometric white mould delineator building by using the side index data, the top surface patch index data, the delineator index data, the top vertex coordinates and the bottom vertex coordinates.
Wherein the geometric white mold building height information is information for white mold geometric building height stretching.
The odd subscript of the position data array is used for storing the top vertex position, the even subscript of the position data array is used for storing the bottom vertex subscript, and the height difference between the bottom and the top is determined by the geometric white mould building height information.
In an embodiment, after executing the computer program to implement the step of determining whether the data arrangement direction of the traversed current ring is consistent with the first direction, the processor further implements the following steps:
and if the data arrangement direction of the traversed current ring is not consistent with the first direction, executing the traversing of the data of the rest rings in the two-dimensional data array by using while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether the current point and the next point can be organized into a line or not by using a vertex array, and synchronizing the data marks to the inner hole array.
In an embodiment, after the step of determining whether the two-dimensional data array has been traversed is implemented by the processor executing the computer program, the following steps are further implemented:
and if the two-dimensional data array is not traversed completely, executing the traversal of the two-dimensional data array.
In an embodiment, when the processor executes the computer program to implement the steps of setting the two-dimensional data array and storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring, the following steps are specifically implemented:
and creating a two-dimensional data array, wherein the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data are stored in the ring, the ring data are divided into an inner ring and an outer ring, the two-dimensional data array organizes ring arrays according to the inner ring and the outer ring in an alternating mode, and zero or more inner ring data follow one outer ring array.
The storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a magnetic disk, or an optical disk, which can store various computer readable storage media.
Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein may be embodied in electronic hardware, computer software, or combinations of both, and that the components and steps of the examples have been described in a functional general in the foregoing description for the purpose of illustrating clearly the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative. For example, the division of each unit is only one logic function division, and there may be another division manner in actual implementation. For example, various elements or components may be combined or may be integrated in another system or some features may be omitted, or not implemented.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs. The units in the device of the embodiment of the invention can be combined, divided and deleted according to actual needs. In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in a storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a terminal, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The white mould building edge painting method is characterized by comprising the following steps:
acquiring GeoJson data, and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data;
setting a two-dimensional data array, and storing the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring;
extracting geometric white mould building height information from the GeoJson data;
traversing the two-dimensional data array;
creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and the next vertex can be organized into a line, and determining the data arrangement direction of the current ring to obtain a first direction;
traversing the residual ring array data in the two-dimensional data array by using while circulation, collecting a data mark of whether the current vertex position, the subscript of the next vertex and the current point and the next point can be organized into a line by using a vertex array, and synchronizing the data mark to the inner hole array;
judging whether the data arrangement direction of the traversed current ring is consistent with the first direction;
if the data arrangement direction of the traversed current ring is consistent with the first direction, triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method to obtain a vertex index;
creating a position data array, and collecting top vertex coordinates and bottom vertex coordinates of the geometric building;
constructing top surface patch index data of the geometric building according to the vertex index;
constructing delineation index data of the geometric white mould delineation building according to the top vertex coordinates and the bottom vertex coordinates;
constructing side index data of the geometric white mould outline building according to the top vertex coordinates and the bottom vertex coordinates;
judging whether the two-dimensional data array is traversed completely;
and if the two-dimensional data array is completely traversed, constructing a geometric white mould depicting building by using the side index data, the top surface patch index data, the depicting edge index data, the top vertex coordinate and the bottom vertex coordinate.
2. The white-model building stroking method according to claim 1, wherein after determining whether the data arrangement direction of the traversed current ring is consistent with the first direction, the method further comprises:
and if the data arrangement direction of the traversed current ring is not consistent with the first direction, executing the traversing of the data of the rest rings in the two-dimensional data array by using while circulation, collecting data marks of a current vertex position, a next vertex subscript, whether the current point and the next point can be organized into a line or not by using a vertex array, and synchronizing the data marks to the inner hole array.
3. The white-model building delineation method of claim 1, wherein after determining whether the two-dimensional data array has been traversed, further comprising:
and if the two-dimensional data array is not traversed, executing the traversal of the two-dimensional data array.
4. The white-model building delineation method of claim 1 wherein the setting of a two-dimensional data array, the storing of the vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring, comprises:
and creating a two-dimensional data array, wherein the two-dimensional data array takes a ring as a class array object, vertex position data of current ring data are stored in the ring, the ring data are divided into an inner ring and an outer ring, the two-dimensional data array organizes the ring arrays in an inner ring and outer ring alternating mode, and zero or more inner ring data follow one outer ring array.
5. The white-model building delineation method of claim 1 wherein the geometric white-model building height information is information for white-model geometric building height stretching.
6. The white model building delineation method of claim 1 wherein the odd indices of the position data array are used to store top vertex positions, the even indices of the position data array are used to store bottom vertex indices, and the height difference between the bottom and the top is determined from geometric white model building height information.
7. White mould building device of stroking, its characterized in that includes:
the data processing unit is used for acquiring GeoJson data and analyzing the GeoJson data to obtain point data, line data and vertex data of a surface in the GeoJson data;
the array setting unit is used for setting a two-dimensional data array and storing vertex data in the two-dimensional data array according to the vertex data of the outer ring and the inner ring;
the height extraction unit is used for extracting geometric white mould building height information from the GeoJson data;
the first traversal unit is used for traversing the two-dimensional data array;
the array creating unit is used for creating a vertex array and an inner hole array, traversing vertex data of an outer ring, collecting vertex coordinate information, next vertex index data and mark data of whether a current vertex and a next vertex can form a line or not, and determining the data arrangement direction of the current ring to obtain a first direction;
the second traversal unit is used for circularly traversing the data of the rest rings in the two-dimensional data array by using while, collecting the data marks of whether the current vertex position, the next vertex subscript, the current point and the next point can be organized into a line or not by using the vertex array, and synchronizing the data marks to the inner hole array;
the first judging unit is used for judging whether the data arrangement direction of the traversed current ring is consistent with the first direction or not;
the triangulation unit is used for triangulating the vertex data of the inner ring and the vertex data of the outer ring by an ear cutting method if the data arrangement direction of the traversed current ring is consistent with the first direction so as to obtain a vertex index;
the collection unit is used for creating a position data array and collecting the top vertex coordinates and the bottom vertex coordinates of the geometric building;
the first construction unit is used for constructing top surface patch index data of the geometric building according to the vertex index;
the second construction unit is used for constructing the stroking index data of the geometric white mould stroking building according to the top vertex coordinates and the bottom vertex coordinates;
the third construction unit is used for constructing side index data of the geometric white mould stroked building according to the top vertex coordinates and the bottom vertex coordinates;
the second judging unit is used for judging whether the two-dimensional data array is traversed or not;
and the building construction unit is used for constructing a geometric white mould delineator by using the side index data, the top surface patch index data, the delineator index data, the top vertex coordinate and the bottom vertex coordinate if the two-dimensional data array is completely traversed.
8. The white model building stroke device as claimed in claim 7, wherein the array creating unit is configured to create a two-dimensional data array having a ring as a class array object, the ring storing vertex position data of current ring data, the ring data being divided into an inner ring and an outer ring, the two-dimensional data array organizing the ring arrays in an inner ring and outer ring alternating fashion, one outer ring array being followed by zero or more inner ring data.
9. A computer device, characterized in that the computer device comprises a memory, on which a computer program is stored, and a processor, which when executing the computer program implements the method according to any of claims 1 to 6.
10. A storage medium, characterized in that the storage medium stores a computer program which, when executed by a processor, implements the method according to any one of claims 1 to 6.
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