CN115984425A - OpenGL-based method and system for linkage drawing and editing of flat section diagram - Google Patents
OpenGL-based method and system for linkage drawing and editing of flat section diagram Download PDFInfo
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Abstract
A linkage drawing and editing method and system of a flat section map based on OpenGL (open graphics library) comprises the steps of building a drawing platform by referring to a graph library, constructing functions of a plane ground object and a section ground object, and associating the functions of the plane ground object and the section ground object by using a unique identification ID (identification); drawing a plane ground object, calculating the position of the section ground object and drawing the section ground object while drawing the plane ground object, and associating the plane ground object with the section ground object in the background by using an ID (identity); adding a response event, and highlighting the associated planar ground object and the cross-section ground object simultaneously when the mouse moves to the planar ground object or the cross-section ground object; when a certain plane ground feature or a cross section ground feature is selected, the related plane ground feature and the cross section ground feature are selected at the same time, and attributes are given in an attribute table at the same time; when a plane ground feature or a section ground feature is edited, the associated plane ground feature and the associated section ground feature are simultaneously edited, and then the result is displayed in real time. The invention can effectively improve the efficiency of drawing a plane section diagram.
Description
Technical Field
The invention belongs to the field of overhead transmission line flat section view processing, and particularly relates to a method and a system for linkage drawing and editing of a flat section view based on OpenGL.
Background
In the engineering construction drawing design stage of the overhead transmission line, measurement data obtained through final surveying and positioning need to be drawn into a line flat section drawing to be provided for line designers; in the design work, the line flat section diagram is used as main measurement data and is the basis of line optimization ranking design, so that the accurate and rapid drawing of the flat section diagram is of great importance to the whole transmission line project.
At present, relatively mature flat section diagram software, such as domestic slur SLW2D overhead power transmission line flat section diagram processing and positioning SLCAD software, foreign PLS-CADD software and the like, however, these software are not satisfactory when associating planes and sections, require a large amount of text operation, are not completely object-oriented, and simultaneously, the attribute editing is very complex, and after moving and editing the attributes of planar ground objects, the associated section diagram cannot be drawn in a linkage manner in real time, which greatly affects the drawing efficiency of the flat section diagram.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a linkage drawing and editing method and system for a plain section graph based on OpenGL, so that the efficiency of the plain section graph is effectively improved, and the workload of field staff is reduced.
In order to achieve the purpose, the invention has the following technical scheme:
an OpenGL-based linkage drawing and editing method for a flat section diagram comprises the following steps:
building a drawing platform by using an OpenGL graphic library, constructing functions of a plane ground feature and a section ground feature, and associating the functions of the plane ground feature and the section ground feature by using a unique identification ID;
adding a mouse click response event Oglcontrol _ leftMouseButtonwown to draw a plane ground object, drawing the plane ground object by utilizing an OpenGL drawing function OnDraw, calculating the position of the cross-section ground object and drawing the cross-section ground object while drawing the plane ground object, associating the plane ground object and the cross-section ground object at the background by using an ID (identity), and storing the plane ground object and the cross-section ground object in an array;
adding a response event in an OpenGL mouse event oglControl _ MouseMOVE, and when the mouse moves to a certain plane ground feature or a certain section ground feature, highlighting the associated plane ground feature and the section ground feature simultaneously by utilizing a SetHoverFlag function;
when a certain plane ground feature or a section ground feature is selected, selecting the associated plane ground feature and the section ground feature simultaneously by utilizing a SetSelectedFlag function in OpenGL, and simultaneously giving out attributes of the plane and the section in an attribute table;
when the attribute value of a certain plane ground feature or a cross-section ground feature is edited, the associated plane ground feature and the cross-section ground feature are simultaneously edited, and the result is displayed in real time by utilizing the OnDraw function.
Preferably, in the step of associating the functions of the planar ground object and the cross-section ground object by using the unique identification ID, one planar ground object can be associated with a plurality of cross sections, but one cross-section ground object can be associated with only one planar ground object.
Preferably, in the step of associating the functions of the plane ground feature and the section ground feature by using the unique identification ID, an ID generator is constructed to generate a unique ID; and deleting the corresponding section ground object while deleting a certain plane ground object, and deleting the ID number in the ID array.
Preferably, when drawing a planar ground object or a cross-sectional ground object by using the OpenGL drawing function OnDraw, a linear ground object is drawn by using the rubber band drawing method of OpenGL, and when drawing a planar ground object, the head and tail points are closed.
As a preferred scheme, in the step of adding a response event to the OpenGL mouse event OglControl _ MouseMove, when the mouse moves to a certain plane feature or a certain section feature, highlighting the associated plane feature and the section feature at the same time by using the SetHoverFlag function, when the mouse moves on the screen, picking up the coordinate position of the mouse in real time, judging whether the mouse is on the plane or the section according to the coordinate position of the mouse, then querying out the corresponding feature from the feature, finding out the corresponding associated feature according to the ID, and highlighting the associated plane feature and the section feature at the same time.
Preferably, when the mouse moves to a ground object on a certain plane, a threshold value selected by an object is set for precision control, and the threshold value is controlled to be in centimeter precision.
Preferably, when linkage drawing and editing are performed, block calculation is performed according to the mileage of the planar surface feature, and the related surface feature is selected according to a threshold value.
An OpenGL-based linkage drawing and editing system for a flat section diagram comprises:
the function association module is used for quoting an OpenGL graphic library to build a drawing platform, constructing functions of a plane ground object and a section ground object and associating the functions of the plane ground object and the section ground object by using a unique identification ID;
the drawing module is used for adding a mouse click response event Oglcontrol _ leftMouseButtonwown to draw the plane ground feature, drawing the plane ground feature by utilizing an OpenGL drawing function OnDraw, calculating the position of the cross-section ground feature and drawing the cross-section ground feature while drawing the plane ground feature, and associating the plane ground feature with the cross-section ground feature at the background by using an ID (identity) and storing the cross-section ground feature in an array;
the highlight display module is used for adding a response event in an OpenGL mouse event ogControl _ MouseMOVE, and when the mouse moves to a certain plane ground feature or a certain section ground feature, a SetHoverFlag function is used for highlighting the associated plane ground feature and the section ground feature simultaneously;
the attribute acquisition module is used for selecting the associated planar ground object and the cross-section ground object simultaneously by utilizing a SetSelectFlag function in OpenGL when a certain planar ground object or cross-section ground object is selected, and giving the attributes of the plane and the cross section simultaneously in the attribute table;
and the editing module is used for simultaneously editing the related plane ground feature and the cross section ground feature when editing the attribute value of a certain plane ground feature or cross section ground feature, and displaying the result in real time by utilizing the OnDraw function.
An electronic device, comprising:
a memory storing at least one instruction; and
and the processor executes the instructions stored in the memory to realize the linkage drawing and editing method of the OpenGL-based flat section diagram.
A computer-readable storage medium storing a computer program which, when executed by a processor, implements the OpenGL-based linkage drawing and editing method for a flat sectional view.
Compared with the prior art, the invention has the following beneficial effects:
the method includes the steps of building a drawing platform by referring to an OpenGL graphic library, constructing functions of a plane ground feature and a section ground feature, associating the functions of the plane ground feature and the section ground feature by using a unique identification ID, and completely realizing linkage drawing and editing of the plane ground feature and the section ground feature by using the OpenGL function in a matched mode, so that a drawing person does not need to perform text editing operation, does not need to consider the storage content of a background, only needs to draw a required graphic file, and obtains the drawing result. Meanwhile, after the drawing is finished, the attribute values of the plane ground feature and the section ground feature can be edited conveniently, the drawing efficiency is greatly improved, and the error probability is reduced.
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 embodiments are briefly described below, it should be understood that the following drawings only show some embodiments of the present invention, and it is obvious for those skilled in the art that other related drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of an OpenGL graphics library building drawing platform according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a plane and section map constructed by linkage according to the embodiment of the invention;
FIG. 3 is a schematic view of the linkage highlight display of the plane and the section of the embodiment of the present invention;
FIG. 4 illustrates an embodiment of the present invention selecting a graph and displaying a schematic diagram of plane and section attribute information.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, those skilled in the art can also obtain other embodiments without creative efforts.
The existing flat section diagram software needs a large amount of text operation when the plane and the section are associated, is not completely object-oriented, simultaneously has complex attribute editing, and after the plane ground object attribute is moved and edited, the associated section diagram cannot be drawn in a linkage manner in real time, so that the drawing efficiency of the flat section diagram is influenced. Therefore, the invention provides a linkage drawing and editing method of a flat section diagram based on OpenGL, which specifically comprises the following steps:
1. referring to fig. 1, an OpenGL graphics library is used to build a drawing platform, to construct functions of a plane ground feature and a section ground feature, and the functions of the plane ground feature and the section ground feature are associated by using a unique identifier ID;
2. referring to fig. 2, a mouse click response event OglControl _ leftmousebutton down is added to draw a planar ground object, the planar ground object is drawn by using an OpenGL drawing function OnDraw, the position of a cross-section ground object is calculated and the cross-section ground object is drawn while the planar ground object is drawn, the planar ground object and the cross-section ground object are associated at the background by using an ID, and the planar ground object and the cross-section ground object are stored in an array;
3. adding a response event in an OpenGL mouse event ogControl _ mouse cover, and when the mouse moves to a certain plane ground feature or a certain section ground feature, highlighting the associated plane ground feature and the section ground feature simultaneously by utilizing a SetHoverFlag function, as shown in FIG. 3;
4. when a certain plane ground feature or a section ground feature is selected, the related plane ground feature and the section ground feature are simultaneously selected by utilizing a SetSelectedFlag function in OpenGL, and the attributes of the plane and the section are simultaneously given in an attribute table, as shown in FIG. 4;
5. when the attribute value of a certain plane ground feature or a cross section ground feature is edited, the associated plane ground feature and the cross section ground feature are edited simultaneously, and the result is displayed in real time by utilizing an OnDraw function.
In a possible implementation manner, in the step of associating the functions of the planar ground object and the section ground object by using the unique identification ID in the step 1, one planar ground object can also be associated with a plurality of sections, but one section ground object can only be associated with one planar ground object. For example, a power line may intersect a cross section multiple times, and there are multiple cross section projection lines, so it is necessary to set an array in the attributes of the planar and cross section features, respectively, for storing IDs. Meanwhile, the ID is a unique identifier of the plane and the section in the whole figure, and cannot be repeated, so that an ID generator needs to be constructed to generate a unique ID. And deleting the corresponding section ground object while deleting a certain plane ground object, and deleting the ID number in the ID array.
In one possible embodiment, in step 2, when drawing a linear ground object, a rubber band drawing method of OpenGL is used, and when drawing a planar ground object, closing processing is performed at the beginning and end points.
In a possible implementation manner, in step 3, when the mouse moves on the screen, the coordinate position of the mouse is picked up in real time, whether the mouse is on a plane or a cross section is judged according to the coordinate position of the mouse, then a corresponding ground feature is inquired from the ground feature, a corresponding associated ground feature is found according to the ID, and the associated plane ground feature and the cross section ground feature are highlighted simultaneously.
In a possible implementation mode, when the number of the plane ground objects is large, when the mouse is moved to a certain plane ground object, the adjacent and relatively close ground objects are selected at the same time, so that precision control is required when threshold setting is performed, generally control is performed at centimeter precision, and thus the possibility of wrong selection is avoided.
Meanwhile, when linkage drawing and editing are carried out, because the associated ground features need to be selected according to the threshold value, a large amount of circular operation needs to be carried out, when the number of the ground features is large, block operation can be carried out according to the mileage of the plane ground features, and the efficiency is improved.
The linkage drawing and editing method of the OpenGL-based plane and section ground objects in the embodiment of the invention utilizes the cooperation of OpenGL functions, and can completely realize linkage drawing and editing of plane ground objects and section ground objects.
Another embodiment of the present invention further provides a system for linkage drawing and editing of a planar sectional view based on OpenGL, including:
the function association module is used for building a drawing platform by referring to an OpenGL graphic library, constructing functions of the plane ground feature and the section ground feature and associating the functions of the plane ground feature and the section ground feature by using a unique identification ID;
the drawing module is used for adding a mouse click response event Oglcontrol _ leftMouseButtonwown to draw the plane ground feature, drawing the plane ground feature by utilizing an OpenGL drawing function OnDraw, calculating the position of the cross-section ground feature and drawing the cross-section ground feature while drawing the plane ground feature, and associating the plane ground feature with the cross-section ground feature at the background by using an ID (identity) and storing the cross-section ground feature in an array;
the highlight display module is used for adding a response event in an OpenGL mouse event ogControl _ MouseMOVE, and when the mouse moves to a certain plane ground feature or a certain section ground feature, a SetHoverFlag function is used for highlighting the associated plane ground feature and the section ground feature simultaneously;
the attribute acquisition module is used for selecting the associated planar ground object and the cross-section ground object simultaneously by utilizing a SetSelectFlag function in OpenGL when a certain planar ground object or cross-section ground object is selected, and giving the attributes of the plane and the cross section simultaneously in the attribute table;
and the editing module is used for simultaneously editing the related plane ground feature and the cross section ground feature when editing the attribute value of a certain plane ground feature or cross section ground feature, and displaying the result in real time by utilizing the OnDraw function.
An electronic device, comprising: a memory storing at least one instruction; and the processor executes the instructions stored in the memory to realize the linkage drawing and editing method of the OpenGL-based flat section diagram.
A computer-readable storage medium storing a computer program which, when executed by a processor, implements the OpenGL-based linkage drawing and editing method for a flat sectional view.
Illustratively, the instructions stored in the memory may be divided into one or more modules/units, and the one or more modules/units are stored in the computer-readable storage medium and executed by the processor, so as to implement the OpenGL-based linkage drawing and editing method for the open gl-based plain section map. The one or more modules/units may be a series of computer readable instruction segments capable of performing certain functions, which are used to describe the execution of the computer program in the server.
The electronic device can be a computing device such as a smart phone, a notebook, a palm computer and a cloud server. The electronic device may include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that the electronic device may also comprise more or fewer components, or a combination of certain components, or different components, e.g. the electronic device may also comprise an input output device, a network access device, a bus, etc.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage may be an internal storage unit of the server, such as a hard disk or a memory of the server. The memory may also be an external storage device of the server, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the server. Further, the memory may also include both an internal storage unit of the server and an external storage device. The memory is used to store the computer readable instructions and other programs and data needed by the server. The memory may also be used to temporarily store data that has been output or is to be output.
It should be noted that, for the above contents of information interaction, execution process, and the like between the module units, specific functions and technical effects brought by the same concept as that of the method embodiment may be specifically referred to a part of the method embodiment, and details are not described here.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only used for distinguishing one functional unit from another, and are not used for limiting the protection scope of the present application. For the specific working processes of the units and modules in the system, reference may be made to the corresponding processes in the foregoing method embodiments, which are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the processes in the methods of the embodiments described above may be implemented by instructing relevant hardware by a computer program, which may be stored in a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the embodiments of the methods described above may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include at least: any entity or device capable of carrying computer program code to a photographing apparatus/terminal apparatus, a recording medium, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a usb-disk, a removable hard disk, a magnetic or optical disk, etc.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A linkage drawing and editing method for a flat section diagram based on OpenGL is characterized by comprising the following steps:
the method comprises the steps of building a drawing platform by referring to an OpenGL graphic library, building functions of a plane ground object and a section ground object, and associating the functions of the plane ground object and the section ground object by using a unique identification ID;
adding a mouse click response event Oglcontrol _ leftMouseButtonwown to draw a plane ground object, drawing the plane ground object by utilizing an OpenGL drawing function OnDraw, calculating the position of the cross-section ground object and drawing the cross-section ground object while drawing the plane ground object, associating the plane ground object and the cross-section ground object at the background by using an ID (identity), and storing the plane ground object and the cross-section ground object in an array;
adding a response event in an OpenGL mouse event oglControl _ MouseMOVE, and when the mouse moves to a certain plane ground feature or a certain section ground feature, highlighting the associated plane ground feature and the section ground feature simultaneously by utilizing a SetHoverFlag function;
when a certain plane ground feature or a section ground feature is selected, selecting the associated plane ground feature and the associated section ground feature simultaneously by utilizing a SetSelectedFlag function in OpenGL, and simultaneously giving the attributes of the plane and the section in an attribute table;
when the attribute value of a certain plane ground feature or a cross-section ground feature is edited, the associated plane ground feature and the cross-section ground feature are simultaneously edited, and the result is displayed in real time by utilizing the OnDraw function.
2. The OpenGL-based linkage drawing and editing method for flat sectional views according to claim 1, wherein in the step of associating the functions of the flat ground object and the sectional ground object with the unique ID, one flat ground object can be associated with a plurality of sections, but one sectional ground object can be associated with only one flat ground object.
3. The OpenGL-based linkage drawing and editing method for plane and section maps according to claim 1, wherein in the step of associating the functions of the plane feature and the section feature with the unique ID, an ID generator is configured to generate the unique ID; and deleting the corresponding section ground object while deleting a certain plane ground object, and deleting the ID number in the ID array.
4. The method for linkage drawing and editing of the OpenGL-based flat sectional view as claimed in claim 1, wherein when drawing a planar ground object or a sectional ground object by using an OpenGL drawing function OnDraw, a linear ground object is drawn by using a rubber band drawing method of OpenGL, and when drawing a planar ground object, the head and tail points are closed.
5. The method for linkage drawing and editing of the OpenGL-based flat section map as claimed in claim 1, wherein a response event is added to an OpenGL mouse event Oglcontrol _ MouseMOVE, when a mouse moves to a certain plane feature or a certain section feature, a SetHoverFlag function is used to highlight the associated plane feature and the section feature at the same time, when the mouse moves on a screen, the coordinate position of the mouse is picked up in real time, whether the mouse is on a plane or a section is judged according to the coordinate position of the mouse, then the corresponding feature is inquired from the feature, the corresponding associated feature is found according to the ID, and the associated plane feature and the section feature are highlighted at the same time.
6. The OpenGL-based linkage drawing and editing method of the flat section map as claimed in claim 1, wherein when a mouse moves to a ground object on a certain plane, a threshold selected by an object is set for precision control, and the threshold is controlled to be centimeter precision.
7. The OpenGL-based linkage drawing and editing method for flat section maps according to claim 6, wherein during linkage drawing and editing, block operation is performed according to mileage of a planar surface feature, and a related surface feature is selected according to a threshold value.
8. The linkage drawing and editing system for the open GL-based flat section diagram is characterized by comprising the following components:
the function association module is used for building a drawing platform by referring to an OpenGL graphic library, constructing functions of the plane ground feature and the section ground feature and associating the functions of the plane ground feature and the section ground feature by using a unique identification ID;
the drawing module is used for adding a mouse click response event Oglcontrol _ leftMouseButtonDown to draw the plane ground object, drawing the plane ground object by utilizing an OpenGL drawing function OnDraw, calculating the position of the cross-section ground object and drawing the cross-section ground object while drawing the plane ground object, and associating the plane ground object with the cross-section ground object in the background by using an ID (identity) and storing the plane ground object and the cross-section ground object in an array;
the highlight display module is used for adding a response event in an OpenGL mouse event ogControl _ MouseMOVE, and when the mouse moves to a certain plane ground feature or a certain section ground feature, a SetHoverFlag function is used for highlighting the associated plane ground feature and the section ground feature simultaneously;
the attribute acquisition module is used for selecting the associated planar ground object and the cross-section ground object simultaneously by utilizing a SetSelectFlag function in OpenGL when a certain planar ground object or cross-section ground object is selected, and giving the attributes of the plane and the cross section simultaneously in the attribute table;
and the editing module is used for editing the attribute value of a certain plane ground feature or a cross section ground feature, simultaneously editing the associated plane ground feature and the cross section ground feature, and displaying the result in real time by using an OnDraw function.
9. An electronic device, comprising:
a memory storing at least one instruction; and
a processor executing instructions stored in the memory to implement the OpenGL-based linkage drawing and editing method for a flat-section graph according to any one of claims 1 to 7.
10. A computer readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the OpenGL-based linkage drawing and editing method for a flat sectional view according to any one of claims 1 to 7.
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