CN114662173A - Three-dimensional CAD model data processing system and method - Google Patents
Three-dimensional CAD model data processing system and method Download PDFInfo
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- CN114662173A CN114662173A CN202210565015.7A CN202210565015A CN114662173A CN 114662173 A CN114662173 A CN 114662173A CN 202210565015 A CN202210565015 A CN 202210565015A CN 114662173 A CN114662173 A CN 114662173A
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Abstract
The invention provides a three-dimensional CAD model data processing system and a method, wherein the method comprises the following steps: establishing a drawing operation mapping table, wherein the drawing operation mapping table is used for recording the corresponding relation of drawing operations of different commercial CAD software; embedding the drawing operation mapping table into different commercial CAD software in a plug-in mode; recording the drawing behavior of a user and generating a drawing operation record table; when a certain commercial CAD software exports an original three-dimensional CAD model into a universal format file, packaging the universal format file together with a corresponding drawing operation record table into a uniform format file; importing the uniform format file into another commercial CAD software, and prompting a user to select to directly analyze the general format file or redraw the three-dimensional CAD model by the other commercial CAD software; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table. The invention can realize better circulation of three-dimensional CAD model data in different commercial CAD software to a certain extent.
Description
Technical Field
The invention relates to the technical field of three-dimensional data processing, in particular to a three-dimensional CAD model data processing system and a three-dimensional CAD model data processing method.
Background
As is known, three-dimensional CAD model data needs to be converted into a unified format, such as solidworks, UG, pro, etc., to be transferred between different commercial CAD software, and the file in stp format can be parsed. Through practical use, once an original file of a certain commercial CAD software is stored in a general format such as an stp format and then is analyzed and opened by other commercial CAD software, an original drawing record can not be displayed any more, but only the physical characteristics in the model are displayed, so that after CAD model data in the general format is opened by using different commercial CAD software, secondary editing cannot be well performed.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a three-dimensional CAD model data processing method, which can achieve better circulation of three-dimensional CAD model data in different commercial CAD software to some extent.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a method of processing three-dimensional CAD model data, comprising:
establishing a drawing operation mapping table, wherein the drawing operation mapping table is used for recording the corresponding relation of drawing operations of different commercial CAD software;
recording the drawing behavior of a user and generating a drawing operation record table;
when a certain commercial CAD software exports an original three-dimensional CAD model into a universal format file, packaging the universal format file together with a corresponding drawing operation record table into a uniform format file;
importing the uniform format file into another commercial CAD software, and prompting a user to select to directly analyze the general format file or redraw the three-dimensional CAD model by the other commercial CAD software; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table.
Preferably, the method for recording the drawing behavior of the user and generating the drawing operation record table includes:
judging whether the entity features are correctly generated, if so, recording node coordinate parameters, vector diagrams and feature operation types of the sketch for generating the entity features;
judging whether a reference surface with a reference relation with the entity characteristics or the sketch exists or not, and if so, recording a plane coordinate parameter of the reference surface;
recording operation parameters for secondary editing of the entity characteristics, wherein the operation parameters comprise operation objects, operation positions and operation values;
and judging whether the position parameter and the size of a certain entity feature are changed or not, and if so, adjusting the coordinate parameter of the sketch corresponding to the entity feature according to the variable quantity.
Preferably, the method further comprises deleting redundant records in the drawing operation record table, where the redundant records at least include: individual sketches, shading renderings, individual datum planes.
Preferably, the method further comprises verifying the drawing operation record table, and the verifying method comprises:
redrawing the three-dimensional CAD model in the same commercial CAD software according to the drawing operation record;
and comparing the redrawn three-dimensional CAD model with an original three-dimensional CAD model drawn by a user by using an image comparison algorithm, and outputting a comparison result.
Preferably, the method further comprises the steps of recording the screen of the drawing action of the user to obtain video data, and packaging the video data in a uniform format file.
Preferably, the method further comprises the following steps:
recording the time node Tn of each effective operation; the effective operation refers to all operations in software when the sketch and the entity characteristics need to be edited;
judging whether effective editing on the sketch or the entity characteristics exists or not, and if so, recording the starting time node and the ending node of the effective editing;
and judging whether the deletion operation for the effective editing exists or not, and if so, deleting the video data between the corresponding starting time node and the ending node.
A second object of the present invention is to provide a three-dimensional CAD model data processing system which can achieve a better circulation of three-dimensional CAD model data among different commercial CAD software to some extent.
In order to realize the purpose, the technical scheme of the invention is as follows:
a three-dimensional CAD model data processing system, comprising:
the editing module is used for establishing a drawing operation mapping table which is used for recording the corresponding relation of drawing operations of different commercial CAD software;
the recording module is used for recording the drawing behavior of the user and generating a drawing operation record table;
the export module is used for packing the original three-dimensional CAD model and the corresponding drawing operation record table into a unified format file when a certain commercial CAD software exports the original three-dimensional CAD model into a universal format file;
the import module is used for importing the uniform format file into another commercial CAD software, and the other commercial CAD software prompts a user to select to directly analyze the general format file or redraw the three-dimensional CAD model; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table.
Preferably, the recording method of the recording module includes:
judging whether the entity features are correctly generated, if so, recording node coordinate parameters, vector diagrams and feature operation types of the sketch for generating the entity features;
judging whether a reference surface with a reference relation with the entity characteristics or the sketch exists or not, and if so, recording a plane coordinate parameter of the reference surface;
recording operation parameters for secondary editing of the entity characteristics, wherein the operation parameters comprise operation objects, operation positions and operation values;
and judging whether the position parameter and the size of a certain entity feature are changed or not, and if so, adjusting the coordinate parameter of the sketch corresponding to the entity feature according to the variable quantity.
Preferably, the system further comprises a screen recording module, wherein the screen recording module is used for recording a screen of the drawing behavior of the user to obtain video data, and packaging the video data in a uniform format file.
Preferably, the screen recording module is further configured to:
recording the time node Tn of each effective operation;
judging whether effective editing on the sketch or the entity characteristics exists or not, and if so, recording the starting time node and the ending node of the effective editing;
and judging whether the deletion operation for the effective editing exists or not, and if so, deleting the video data between the corresponding starting time node and the ending node.
The technical effects of the invention are mainly reflected in the following aspects:
1. the original three-dimensional CAD model can be redrawn to a certain extent through the drawing operation recording table and the drawing operation mapping table, so that the drawing steps are restored in a software interface, and a user can edit the three-dimensional CAD model conveniently.
2. The video recording and packaging device has the screen recording function, records and packages the initial drawing process of the user, and is convenient for other users to use after later viewing.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional CAD model data processing method in an embodiment;
FIG. 2 is a schematic diagram of a three-dimensional CAD model data processing system in an embodiment.
Detailed Description
The following detailed description of the embodiments of the present invention is provided in order to make the technical solution of the present invention easier to understand and understand.
The first embodiment,
Referring to the drawings, the present embodiment provides a three-dimensional CAD model data processing method, including:
s1, establishing a drawing operation mapping table, wherein the drawing operation mapping table is used for recording the corresponding relation of drawing operations of different commercial CAD software; namely: the names of the operation commands in UG, SW and Pro-E are not identical, the same or different operation commands which achieve the same effect in a plurality of software are associated and correspond through drawing an operation mapping table, and further, the corresponding operation command in another software can be found as long as the operation command in the software is determined.
S2, recording the drawing behavior of the user and generating a drawing operation record table; specifically, the method for recording the drawing behavior of the user and generating the drawing operation record table includes:
s301, judging whether the entity features are correctly generated, if so, recording node coordinate parameters, vector diagrams and feature operation types of the sketch for generating the entity features; if the entity features are generated in the process of generating, such as error reporting or warning, the entity features are generated incorrectly, and at this time, the user generally cancels the operation and redraws the entity features, so that the entity features do not need to be recorded.
S302, judging whether a reference surface which has a reference relation with the entity characteristics or the sketch exists or not, and if so, recording a plane coordinate parameter of the reference surface; because the datum plane has a reference relation with other entity characteristics or sketches, such as mirror reference, sketches plane reference and the like, the datum plane is needed to exist in the later stage when redrawing is carried out, and the later-stage modification is facilitated.
S303, recording operation parameters of secondary editing of the entity characteristics, wherein the operation parameters comprise an operation object, an operation position and an operation value; "Secondary editing" is generally the manipulation of chamfering, shelling, array, etc. based on physical characteristics.
S304, judging whether the position parameter and the size of a certain entity feature have changes, if so, adjusting the coordinate parameter of the sketch corresponding to the entity feature according to the change.
S305, deleting redundant records in the drawing operation record table, where the redundant records at least include: individual sketches, shading renderings, individual datum planes.
In addition, in order to improve the accuracy, the drawing operation record table can be verified, and the verification method comprises the following steps:
s311, redrawing the three-dimensional CAD model in the same commercial CAD software according to the drawing operation record;
and S312, comparing the redrawn three-dimensional CAD model with the original three-dimensional CAD model drawn by the user by using an image comparison algorithm, and outputting a comparison result. There are two ways of image comparison, one is to compare in six views in total, namely: and comparing the left view with the left view, and if the difference between the views is low, the verification is passed. Another way is to decompose each individual entity feature separately and compare the six views of each entity feature.
S3, when exporting the original three-dimensional CAD model to a universal format file, a certain commercial CAD software packages the file with the corresponding drawing operation record table to a uniform format file;
it should be noted that the unified format file may be a compressed package format file or a redefined format file.
S4, importing the uniform format file into another commercial CAD software, and prompting a user to select to directly analyze the general format file or redraw the three-dimensional CAD model; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table.
Specifically, the software extracts a mapping data set from the drawing operation mapping table according to the software information of the software, then reads the data of the drawing operation recording table, and converts the data of the drawing operation recording table into drawing operation data matched with the software according to the mapping data set. And then automatically drawing the three-dimensional CAD model according to the drawing operation data obtained by conversion.
In addition, the method also comprises the steps of recording the screen of the drawing behavior of the user to obtain video data, and packaging the video data in a unified format file. Further, in order to reduce the file size of the video data, the embodiment further provides a reduction method, including:
A. recording the time node Tn of each effective operation; the effective operation refers to all operations in software when the sketch and the entity characteristics need to be edited, such as selection, operation command clicking and the like; and clicking in some invalid areas is an invalid operation.
B. Judging whether effective editing on the sketch or the entity characteristics exists or not, and if so, recording the starting time node and the ending node of the effective editing; active editing refers to changes in sketch or physical features, such as changes in shape, position, number, and the like.
C. And judging whether the deletion operation for the effective editing exists or not, and if so, deleting the video data between the corresponding starting time node and the ending node. The delete operation may be by a delete key or a back button.
By the method, the video related to useless operation in the drawing process can be deleted, so that the file size of the video data can be greatly reduced.
Example II,
Referring to fig. 2, this embodiment provides a three-dimensional CAD model data processing system based on the first embodiment, where the system includes an editing module, an installation module, a recording module, an export module, an import module, and a screen recording module, and the system may be embedded in different business CAD software in the form of plug-in, or may be developed as a built-in function module of the business CAD software.
The editing module is used for establishing a drawing operation mapping table, and the drawing operation mapping table is used for recording the corresponding relation of drawing operations of different commercial CAD software.
The installation module is used for embedding the drawing operation mapping table into different commercial CAD software in a plug-in mode; after the commercial CAD software inserts the corresponding function, the functional interface of the commercial CAD software displays an enabling/disabling button for the user to select whether the recording function is enabled. When the user selects to enable, the recording module is activated. The recording module is used for recording the drawing behavior of the user and generating a drawing operation record table;
the export module is used for packaging the original three-dimensional CAD model and a corresponding drawing operation record table into a uniform format file when a certain commercial CAD software exports the original three-dimensional CAD model into a general format file;
the import module is used for importing the uniform format file into another commercial CAD software, and the other commercial CAD software prompts a user to select to directly analyze the general format file or redraw the three-dimensional CAD model; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model according to the drawing operation record table and the drawing operation mapping table.
The screen recording module is used for recording the screen of the drawing behavior of the user to obtain video data, and packaging the video data in a uniform format file.
The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.
Claims (10)
1. A three-dimensional CAD model data processing method is characterized by comprising the following steps:
establishing a drawing operation mapping table, wherein the drawing operation mapping table is used for recording the corresponding relation of drawing operations of different commercial CAD software;
recording the drawing behavior of a user and generating a drawing operation record table;
when a certain commercial CAD software exports an original three-dimensional CAD model into a universal format file, packaging the universal format file together with a corresponding drawing operation record table into a uniform format file;
importing the uniform format file into another commercial CAD software, and prompting a user to select to directly analyze the general format file or redraw the three-dimensional CAD model by the other commercial CAD software; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table.
2. The method for processing data of a three-dimensional CAD model according to claim 1, wherein the method for recording the rendering behavior of the user and generating the rendering operation record table comprises:
judging whether the entity features are correctly generated, if so, recording node coordinate parameters, vector diagrams and feature operation types of the sketch for generating the entity features;
judging whether a reference surface with a reference relation with the entity characteristics or the sketch exists or not, and if so, recording a plane coordinate parameter of the reference surface;
recording operation parameters for secondary editing of the entity characteristics, wherein the operation parameters comprise operation objects, operation positions and operation values;
and judging whether the position parameter and the size of a certain entity feature are changed or not, and if so, adjusting the coordinate parameter of the sketch corresponding to the entity feature according to the variable quantity.
3. The method according to claim 2, further comprising deleting redundant records in the rendering operation record table, the redundant records comprising at least: individual sketches, rendered shading, individual datum planes.
4. The method for processing data of a three-dimensional CAD model according to claim 1, further comprising verifying the drawing operation record table, the verifying method comprising:
redrawing the three-dimensional CAD model in the same commercial CAD software according to the drawing operation record;
and comparing the redrawn three-dimensional CAD model with the original three-dimensional CAD model drawn by the user by using an image comparison algorithm, and outputting a comparison result.
5. The method as claimed in claim 1, further comprising recording the drawing behavior of the user to obtain video data, and packaging the video data in a unified format file.
6. The method of processing data of a three-dimensional CAD model as recited in claim 5, further comprising:
recording the time node Tn of each effective operation;
judging whether effective editing on the sketch or the entity characteristics exists or not, and if so, recording the starting time node and the ending node of the effective editing;
and judging whether the deletion operation for the effective editing exists or not, and if so, deleting the video data between the corresponding starting time node and the ending node.
7. A three-dimensional CAD model data processing system, comprising:
the editing module is used for establishing a drawing operation mapping table which is used for recording the corresponding relation of drawing operations of different commercial CAD software;
the recording module is used for recording the drawing behavior of the user and generating a drawing operation record table;
the export module is used for packing the original three-dimensional CAD model and the corresponding drawing operation record table into a unified format file when a certain commercial CAD software exports the original three-dimensional CAD model into a universal format file;
the import module is used for importing the uniform format file into another commercial CAD software, and the other commercial CAD software prompts a user to select to directly analyze the general format file or redraw the three-dimensional CAD model; if the user selects the latter, the other commercial CAD software redraws the three-dimensional CAD model based on the drawing operation record table and the drawing operation mapping table.
8. The three-dimensional CAD model data processing system of claim 7, wherein the recording means of the recording module comprises:
judging whether the entity features are correctly generated, if so, recording node coordinate parameters, vector diagrams and feature operation types of the sketch for generating the entity features;
judging whether a reference surface with a reference relation with the entity characteristics or the sketch exists or not, and if so, recording a plane coordinate parameter of the reference surface;
recording operation parameters of secondary editing of the entity characteristics, wherein the operation parameters comprise an operation object, an operation position and an operation value;
and judging whether the position parameter and the size of a certain entity feature are changed or not, and if so, adjusting the coordinate parameter of the sketch corresponding to the entity feature according to the variable quantity.
9. The system according to claim 7, further comprising a screen recording module, wherein the screen recording module is configured to record a drawing behavior of a user to obtain video data, and package the video data in a unified format file.
10. The three-dimensional CAD model data processing system of claim 9, wherein the screen recording module is further configured to:
recording the time node Tn of each effective operation;
judging whether effective editing on the sketch or the entity characteristics exists or not, and if so, recording the starting time node and the ending node of the effective editing;
and judging whether the deletion operation for the effective editing exists or not, and if so, deleting the video data between the corresponding starting time node and the ending node.
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