CN112184893A - Drawing method, device and equipment for integration of linear surface body and storage medium - Google Patents
Drawing method, device and equipment for integration of linear surface body and storage medium Download PDFInfo
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Abstract
The invention relates to a drawing method, a device, equipment and a storage medium for integration of a linear body and a surface body, wherein the method comprises the following steps: preprocessing the acquired initial line data to obtain target line data, wherein the target line data is basic line type data; determining the direction of generating target area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target area data; generating base data for constituting the volume data from the direction of generating the target area data from the target line data, and generating the target volume data from the base data to complete rendering. The drawing line, the drawing surface and the drawing body are integrally generated in the drawing process of the line-surface body, the drawing efficiency can be greatly optimized, and the drawing steps are reduced.
Description
Technical Field
The invention relates to the technical field of modeling, in particular to a linear-surface-body integrated drawing method, device, equipment and storage medium.
Background
With the progress and development of society, three-dimensional modeling brings great convenience to production and life of people, for example, in the modeling application of building components, the modeling can be carried out in advance by designers based on modeling results, so that the design efficiency can be improved.
However, in the three-dimensional modeling software in the related art, the modeling software is usually based on a polygon modeling technique and a parametric modeling technique, and both the two modeling techniques can only be edited and adjusted on the same geometric body, but can not establish editable connections between different geometric bodies, that is, drawing lines, drawing surfaces and drawing bodies are independent tools. Therefore, the modeling operation is complicated, and the modeling efficiency is greatly reduced.
Disclosure of Invention
In view of this, a drawing method, a drawing device, a drawing apparatus and a storage medium for integrating line and surface bodies are provided to solve the problem that the drawing of lines, drawing of surfaces and drawing of bodies in the existing modeling software are independent functional modules and the integrated rapid modeling cannot be realized.
The invention adopts the following technical scheme:
in a first aspect, an embodiment of the present application provides a method for drawing a linear-surface body in an integrated manner, where the method includes:
preprocessing acquired initial line data to obtain target line data, wherein the initial line data is basic line type data;
determining the direction of generating target surface area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target surface area data;
generating basic data for constituting the volume data from the direction in which the target surface area data is generated from the target line data, and generating target volume data from the basic data to complete rendering.
In a second aspect, an embodiment of the present application provides a drawing device for integrating a linear body, where the device includes:
the system comprises a line data acquisition module, a line data acquisition module and a line data acquisition module, wherein the line data acquisition module is used for preprocessing acquired initial line data to obtain target line data, and the initial line data is basic line data;
the surface area data generating module is used for determining the direction of generating target surface area data by the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target surface area data;
and the volume data generation module is used for generating basic data for forming the volume data according to the direction of the target surface area data generated by the target line data and generating target volume data according to the basic data so as to finish drawing.
In a third aspect, an embodiment of the present application provides an apparatus, including:
a processor, and a memory coupled to the processor;
the memory is used for storing a computer program, and the computer program is at least used for executing the line-surface-volume-integrated rendering method described in the first aspect of the embodiment of the present application;
the processor is used for calling and executing the computer program in the memory.
In a fourth aspect, the present application provides a storage medium, where a computer program is stored, and when the computer program is executed by a processor, the steps in the line-surface-volume-integrated rendering method according to the first aspect are implemented.
By adopting the technical scheme, the direction of generating target area data from the target line data is determined according to the acquired target line data, the normal direction of the target line data and the tangential direction of the target line data, so that the target area data is generated; then, the direction of the target area data is generated from the target line data, and the basic data for constituting the volume data is generated, and the target volume data is generated from the basic data, thereby completing the rendering. Therefore, a capturing relation is established between adjacent geometric bodies with different properties, line data can be captured or drawn according to drawing requirements, surface area data or volume data are generated by the line data, intelligent capture of adjacent edges of different geometric bodies or drawing and boundary extraction of the same geometric body along the edges are achieved, integrated generation of drawing lines, drawing surfaces and drawing bodies in the drawing process can be achieved through one key of the attribute, drawing efficiency can be greatly optimized, and drawing steps are reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flowchart of a drawing method for integration of a linear body and a surface body according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a drawing apparatus for integrating linear bodies according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The basic concepts of the embodiments of the present application and the related prior art are first explained. At present, three-dimensional modeling software developed at home and abroad, such as 3dsmax, sketchup and other software, is an independent command tool for the construction of lines, surfaces and bodies of geometric shapes, and the conventional geometric bodies comprise: straight lines, curves, rectangles, circles, cuboids, spheres, cylinders, cones, etc.
The representation method of three-dimensional model in computer graphics mainly includes polynomial, triangle and discrete points. Firstly, the polynomial is used as a basic representation element of three-dimensional modeling, and based on strict mathematical concepts, the geometric attributes of the surface of an object can be accurately described, so that the method is very suitable for defining a smooth surface. However, the basic representation element needs to parameterize the acquired sampling points, and for an object with a complex topological structure, solving a high-order function is very costly. Triangles are used as basic representation elements in three-dimensional modeling, and have wide application in graphics. Secondly, the surface modeling is carried out by using a triangle, irregular sampling is firstly carried out according to the complexity of the surface of the object, and then the surface modeling is realized by adopting a piecewise linear fitting technology. The representation element of the triangle is not only simple in nature, but also can effectively represent the geometric attributes of the surface of the object. Finally, the sampling points obtained by scanning are used as basic elements for surface modeling, which is the most natural choice. Mathematically, the description of the geometric properties of the surface of the object is transformed from a piecewise linear equation representation to a discrete distribution representation. The sampling point-based representation of the model surface greatly reduces the amount of data storage of the model relative to a triangular representation. Meanwhile, the representation element does not store the connection relation between sampling points, so that the difficulty exists in data processing.
The method and the device for drawing the geometric solid sample points of existing objects in a scene, and establish data connection relations among different geometric solids, so that the purpose that lines, surfaces and adults can be drawn along the existing geometric solids is achieved, and drawing speed and drawing efficiency are improved.
Examples
Fig. 1 is a flowchart of a drawing method for integrating a line and a surface body according to an embodiment of the present invention, where the method may be executed by a drawing apparatus for integrating a line and a surface body according to an embodiment of the present invention, and the apparatus may be implemented in a software and/or hardware manner. Referring to fig. 1, the method may specifically include the following steps:
s101, preprocessing the acquired initial line data to obtain target line data, wherein the initial line data is basic line data.
Specifically, the line data may be obtained in various ways, for example, by performing operations such as self-drawing, edge-tracing, or selecting an existing building component, etc., to quickly and conveniently obtain the line data, and the obtained line data may be used as a geometric basis for subsequent operations. In an actual application process, the acquired initial line data may not necessarily be used as a basis for generating the area data, and the initial line data needs to be preprocessed to obtain the target line data, where the preprocessing may be screening of line data meeting a set condition, and the like. In the application scenario of the embodiment of the application, the type of the initial line data may be basic line type data, and the basic line type data may be applied to modeling in the building field after the drawing is completed.
In addition, it should be noted that the application scenarios in the embodiments of the present application are only used for illustration and are not limited to specific examples, for example, the rendering method may be applied to each three-dimensional modeling scenario.
Optionally, the manner of obtaining the initial line data includes: acquiring initial line data freely drawn according to a set starting point, or; determining initial line data or initial line data according to track data obtained by drawing along the edge of the first existing initial building component; acquiring initial line data according to a plane where a ridge line component of a second existing building component is located, or; and for the undefined object, determining initial line data according to the side information of the area where the current click position is located.
Specifically, in the first of the four ways, drawing is performed freely, for example, a starting point is specified, and then an arc or a straight line is drawn as initial line data; secondly, drawing along the edge, acquiring object capture data, filtering all edge line capture data, breaking the edge according to a starting point and a current point of a cursor, and storing track data along the edge; thirdly, acquiring undetermined data of the building component, finding a plane where the edge component is located, determining a normal direction according to the plane, acquiring line data of a specified plane, connecting the disordered line data, and storing a result required by filtering; namely, screening the line data by setting a normal direction and a plane; connecting the line segments represented by the screened initial line data to obtain target line data representing target line segments; fourthly, for the undefined object, selecting the undefined object, obtaining the area where the current point of the mouse is located, obtaining all side information of the area, obtaining the appointed side according to the current closest point of the mouse, and taking out the legal data storage result.
The four ways of acquiring line data are for example, and are not particularly limited. In different application scenarios, the way of acquiring line data may be different. Or the user decides which way to apply according to the actual needs of the user.
S102, determining the direction of generating target area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate the target area data.
In a specific example, in the determination of the direction in which the target line data generates the target area data, a coordinate axis may be constructed according to the current click position, the tangential direction of the target line data, and the normal direction. And determining the direction of generating the target area data by the target line data according to the direction of the coordinate axis.
In addition, generating the target area data may be specifically realized by the following steps: if the direction of generating the target area data by the target line data is normal stretching, stretching a first stretching distance along the direction of generating the target area data by the target line data to determine the target area data; and if the direction of generating the target area data by the target line data is tangential stretching, generating the target area data according to the plane where the ridge line member of the second existing building member is located. The first stretching distance and the second stretching distance may be determined by obtaining a stretching operation of the user, for example, recording a starting position point and an end point of the stretching operation to calculate the stretching distance.
S103, generating basic data for constituting the volume data from the direction of generating the target surface area data from the target line data, and generating the target volume data from the basic data to complete rendering.
Illustratively, if the direction of generating the target surface area data from the target line data is normal stretching, sequentially exchanging the stretching order, and generating target volume data according to the second stretching distance to finish drawing; exchanging the stretching order in turn ensures a higher accuracy in generating the volume data. And if the direction of generating the target surface area data from the target line data is tangential stretching, generating target volume data directly according to the second stretching distance to finish drawing, wherein the stretching direction is the tangential stretching direction.
In addition, after the face area data is acquired, the direction of generating the face area data is judged, and if the direction is the normal direction, the vector passing through the current operation is required to be used as the basic vector for generating the operation face; if the direction is tangential, the previously generated area data is directly used for direct stretching. That is, the base vector of the application is related to the direction of the raw surface area data. Specifically, the basic data constituting the body data is configured in the following two ways: if the direction of generating the target area data by the target line data is the normal direction, recording a vector corresponding to the current stretching direction as basic data of the constitution body data; if the direction in which the target line data is generated into the target area data is the tangential direction, the direction of the target area data is used as the basic data constituting the body data.
In the embodiment of the application, the direction of generating target area data from the target line data is determined according to the acquired target line data, the normal direction of the target line data and the tangential direction of the target line data, so as to generate the target area data; then, the direction of the target area data is generated from the target line data, and the basic data for constituting the volume data is generated, and the target volume data is generated from the basic data, thereby completing the rendering. Therefore, a capturing relation is established between adjacent geometric bodies with different properties, line data can be captured or drawn according to drawing requirements, surface area data or volume data are generated by the line data, intelligent capture of adjacent edges of different geometric bodies or drawing and boundary extraction of the same geometric body along the edges are achieved, integrated generation of the drawn lines, the drawn surfaces and the drawn bodies can be achieved through one key of the attribute, drawing efficiency can be greatly optimized, and drawing steps are reduced.
Fig. 2 is a schematic structural diagram of a drawing apparatus for integrating linear and planar bodies according to an embodiment of the present invention, which is suitable for implementing a drawing method for integrating linear and planar bodies according to an embodiment of the present invention. As shown in fig. 2, the apparatus may specifically include a line data acquisition module 201, a surface area data generation module 202, and a volume data generation module 203.
The line data acquisition module 201 is configured to perform preprocessing on acquired initial line data to obtain target line data, where the initial line data is basic line data; the area data generating module 202 is configured to determine, according to the target line data, the normal direction of the target line data, and the tangential direction of the target line data, a direction in which the target line data generates target area data, so as to generate target area data; a volume data generating module 203 for generating basic data for constituting the volume data from the direction in which the target surface area data is generated from the target line data, and generating the target volume data from the basic data to complete rendering.
Determining the direction of generating target area data from the target line data according to the acquired target line data, the normal direction of the target line data and the tangential direction of the target line data to generate target area data; then, the direction of the target area data is generated from the target line data, and the basic data for constituting the volume data is generated, and the target volume data is generated from the basic data, thereby completing the rendering. Therefore, a capturing relation is established between adjacent geometric bodies with different properties, line data can be captured or drawn according to drawing requirements, surface area data or volume data are generated by the line data, intelligent capture of adjacent edges of different geometric bodies or drawing and boundary extraction of the same geometric body along the edges are achieved, integrated generation of the drawn lines, the drawn surfaces and the drawn bodies can be achieved through one key of the attribute, drawing efficiency can be greatly optimized, and drawing steps are reduced.
Optionally, the line data obtaining module 201:
acquiring initial line data freely drawn according to a set starting point, or;
determining initial line data or initial line data according to track data obtained by drawing along the edge of the first existing initial building component;
acquiring initial line data according to a plane where a ridge line component of a second existing building component is located, or;
and for the undefined object, determining initial line data according to the side information of the area where the current click position is located.
Optionally, if the initial line data is obtained according to a plane where a ridge line member of the second existing building member is located, the line data obtaining module 201 is specifically configured to:
screening the line data by setting a normal direction and a plane;
and connecting the line segments represented by the screened initial line data to obtain target line data representing the target line segment.
Optionally, the system further includes a direction determining submodule, configured to determine a direction in which the target line data generates the target area data, and specifically configured to:
constructing a coordinate axis according to the current click position, the tangential direction and the normal direction of the target line data;
based on the coordinate axes, the direction in which the target line data generates the target area data is determined.
Optionally, the area data generating module 202 is specifically configured to:
if the direction of generating the target area data by the target line data is normal stretching, stretching a first stretching distance along the direction of generating the target area data by the target line data to determine the target area data;
and if the direction of generating the target area data by the target line data is tangential stretching, generating the target area data according to the plane where the ridge line member of the second existing building member is located.
Optionally, the volume data generating module 203 is specifically configured to:
if the direction of generating the target area data by the target line data is the normal direction, recording a vector corresponding to the current stretching direction as basic data of the constitution body data;
if the direction in which the target line data is generated into the target area data is the tangential direction, the direction of the target area data is used as the basic data constituting the body data.
Optionally, the volume data generating module 203 is specifically configured to:
if the direction of generating the target area data from the target line data is normal stretching, sequentially exchanging stretching orders, and generating target volume data according to a second stretching distance to finish drawing;
and if the direction of generating the target area data from the target line data is tangential stretching, generating target volume data directly according to the second stretching distance to finish drawing.
The drawing device for line-surface body integration provided by the embodiment of the invention can execute the drawing method for line-surface body integration provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.
An embodiment of the present invention further provides an apparatus, please refer to fig. 3, fig. 3 is a schematic structural diagram of an apparatus, and as shown in fig. 3, the apparatus includes: a processor 310, and a memory 320 coupled to the processor 310; the memory 320 is used for storing a computer program at least for executing the line-surface-volume-integrated rendering method in the embodiment of the present invention; the processor 310 is used for calling and executing the computer program in the memory; the line-surface-body integrated drawing at least comprises the following steps: preprocessing the acquired initial line data to obtain target line data, wherein the initial line data is basic line data; determining the direction of generating target area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target area data; generating base data for constituting the volume data from the direction of generating the target area data from the target line data, and generating the target volume data from the base data to complete rendering.
The embodiment of the present invention further provides a storage medium, where a computer program is stored, and when the computer program is executed by a processor, the method for drawing line-surface-volume integration according to the embodiment of the present invention includes: preprocessing the acquired initial line data to obtain target line data, wherein the initial line data is basic line data; determining the direction of generating target area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target area data; generating base data for constituting the volume data from the direction of generating the target area data from the target line data, and generating the target volume data from the base data to complete rendering.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that the terms "first," "second," and the like in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A drawing method for integration of linear bodies and surface bodies is characterized by comprising the following steps:
preprocessing acquired initial line data to obtain target line data, wherein the initial line data is basic line type data;
determining the direction of generating target surface area data from the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target surface area data;
generating basic data for constituting the volume data from the direction in which the target surface area data is generated from the target line data, and generating target volume data from the basic data to complete rendering.
2. The method of claim 1, wherein obtaining initial line data comprises:
acquiring initial line data freely drawn according to a set starting point, or;
determining initial line data or initial line data according to track data obtained by drawing along the edge of the first existing initial building component;
acquiring initial line data according to a plane where a ridge line component of a second existing building component is located, or;
and for the undefined object, determining initial line data according to the side information of the area where the current click position is located.
3. The method of claim 2, wherein if the initial line data is obtained from a plane in which a ridge member of a second existing building member is located, preprocessing the obtained initial line data to obtain target line data comprises:
screening the line data by setting a normal direction and a plane;
and connecting the line segments represented by the screened initial line data to obtain target line data representing the target line segment.
4. The method of claim 2, wherein generating target area data comprises:
if the direction of generating the target area data by the target line data is normal stretching, stretching a first stretching distance along the direction of generating the target area data by the target line data to determine the target area data;
and if the direction of generating the target surface area data by the target line data is tangential stretching, generating the target surface area data according to the plane where the ridge line member of the second existing building member is located.
5. The method of claim 1, wherein the determining of the direction of the target line data to generate the target area data comprises:
constructing a coordinate axis according to the current click position, the tangential direction and the normal direction of the target line data;
and determining the direction of generating the target area data by the target line data based on the coordinate axis.
6. The method according to claim 1, wherein the generating of the base data for composing the volume data from the direction in which the target line data is generated comprises:
if the direction of the target line data for generating the target area data is a normal direction, recording a vector corresponding to the current stretching direction as basic data of the formation data;
and if the direction of generating the target area data from the target line data is a tangential direction, using the direction of the target area data as basic data of the composition data.
7. The method of claim 1, wherein generating target volume data comprises:
if the direction of generating the target area data by the target line data is normal stretching, sequentially exchanging stretching orders, and generating target volume data according to a second stretching distance to finish drawing;
and if the direction of generating the target surface area data by the target line data is tangential stretching, generating target volume data directly according to the second stretching distance to finish drawing.
8. A drawing device of the integration of line face body, characterized by, include:
the system comprises a line data acquisition module, a line data acquisition module and a line data acquisition module, wherein the line data acquisition module is used for preprocessing acquired initial line data to obtain target line data, and the initial line data is basic line data;
the surface area data generating module is used for determining the direction of generating target surface area data by the target line data according to the target line data, the normal direction of the target line data and the tangential direction of the target line data so as to generate target surface area data;
and the volume data generation module is used for generating basic data for forming the volume data according to the direction of the target surface area data generated by the target line data and generating target volume data according to the basic data so as to finish drawing.
9. An apparatus, comprising:
a processor, and a memory coupled to the processor;
the memory is used for storing a computer program at least for executing the line-surface-volume-integrated rendering method of any one of claims 1 to 7;
the processor is used for calling and executing the computer program in the memory.
10. A storage medium storing a computer program which, when executed by a processor, implements each step in the line-and-plane-volume-integrated rendering method according to any one of claims 1 to 7.
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