CN105229643A - Amendment is tied and free curvilinear net - Google Patents

Amendment is tied and free curvilinear net Download PDF

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Publication number
CN105229643A
CN105229643A CN201380076950.6A CN201380076950A CN105229643A CN 105229643 A CN105229643 A CN 105229643A CN 201380076950 A CN201380076950 A CN 201380076950A CN 105229643 A CN105229643 A CN 105229643A
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curve
geometric model
curves
constraint
handling system
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CN105229643B (en
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D.巴斯
郁峰
秦辉
林映
朱金标
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Siemens Industry Software NV
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Siemens Product Lifecycle Management Software Inc
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
    • G06F30/10Geometric CAD
    • G06F30/12Geometric CAD characterised by design entry means specially adapted for CAD, e.g. graphical user interfaces [GUI] specially adapted for CAD
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F2111/00Details relating to CAD techniques
    • G06F2111/04Constraint-based CAD

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  • Pure & Applied Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Evolutionary Computation (AREA)
  • General Engineering & Computer Science (AREA)
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  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

For revising the method for geometric model and corresponding system (100) and computer-readable medium (126).Method comprises: receive (205) geometric model, this geometric model comprises multiple curve (302/304a/304b/306a/306b).The method comprises: the selection receiving the one or more curves in (210) the plurality of curve; Find at least one other curve with selected curvilinear correlation in (215) the plurality of curve; And find selected relation between curve and other curve one or more, comprise and add selected curve, described other curve one or more and described relation to selected collection of curves.The method comprises: the selected collection of curves of pre-service (220), comprises the set of deactivation for the constraint of geometric model.The method comprises: the amendment receiving (225) selected curve; And the selected collection of curves of amendment (230), to produce modified geometric model and modified selected collection of curves.The method comprises: the modified selected collection of curves of aftertreatment (235), comprises and reactivating and the constraint of applying for geometric model.

Description

Amendment is tied and free curvilinear net
To the cross reference of other application
" CurvesinaVariationalSystem " that submit in the application and the 30 days April in 2013 jointly transferred the possession of this U.S. Patent application 13/873,642 shares certain theme, and this U.S. Patent application is incorporated to hereby by reference.
Technical field
Present disclosure relates in general to the similar system (jointly, " product data management " system or PDM system) that computer-aided design (CAD), visual and manufacturing system, Production Lifecycle Management (" PLM ") system and management are used for product and other destination data.
Background technology
PDM system management PLM and other data.The system improved closes to expect.
Summary of the invention
Various the disclosed embodiments comprise method for revising geometric model and corresponding system and computer-readable medium.Method comprises: receive geometric model, this geometric model comprises multiple curve.The method comprises: the selection receiving the one or more curves in the plurality of curve; Find at least one other curve with selected curvilinear correlation in the plurality of curve; And the relation selected by finding between curve and this (one or more) other curve, comprise and add selected curve, this (one or more) other curve and described relation to selected collection of curves.The method comprises: collection of curves selected by pre-service, comprises the set of deactivation for the constraint of geometric model.The method comprises: the amendment receiving selected curve; And the selected collection of curves of amendment, to produce modified geometric model and modified selected collection of curves.The method comprises: the modified selected collection of curves of aftertreatment, comprises the constraint reactivating and apply for geometric model.
Foregoing teachings has rather broadly outlined the characteristic sum technical advantage of present disclosure, makes those skilled in the art can understand the following detailed description better.Supplementary features and the advantage of present disclosure will be described hereinafter, and it forms the theme of claim.Those skilled in the art will understand, and they can easily use disclosed concept and specific embodiment as amendment or the basis of other structure being designed for the identical object implementing present disclosure.Those of skill in the art also will appreciate that, such equivalent constructions does not depart from the spirit and scope existed with its most broad overall form in present disclosure.
Before carrying out following embodiment, can advantageously, set forth the definition running through some word that patent document uses or phrase: term " comprises " and " comprising " and its derivative mean to include, without being limited to; Comprising property of term "or", mean and/or; Phrase " with ... be associated " and " associated with it " and its derivative can mean to comprise, be included in ... in, with ... interconnect, comprise, be comprised in ... in, be connected to or with ... connect, be coupled to or with ... coupling, can be with ... communication, with ... cooperation, intertexture, juxtaposition, close to, join to or with ... engage, have, have ... character etc.; And term " controller " means to control at least one any equipment operated, system or its part, and no matter such equipment realizes with hardware, firmware, software or certain combination of at least two in these.It should be pointed out that be associated with any specific controller functional can be centralized or distributed, and no matter be local or long-range.Definition for some word and phrase runs through patent document and provides, and those skilled in the art will appreciate that, be applicable in such being defined in many (if not most) example such word defined and phrase formerly and followingly to use.Although some terms can comprise various embodiment, these terms can be limited to specific embodiment by claims expressly.
Accompanying drawing explanation
For understanding more completely of present disclosure and advantage thereof, referring now to the following description carried out by reference to the accompanying drawings, similar numbering specifies analogical object in the accompanying drawings, and in the accompanying drawings:
Fig. 1 depicts the block diagram of the data handling system that wherein can realize embodiment;
Fig. 2 depicts the process flow diagram of the process according to the disclosed embodiments; And
Exemplary 2D geometric model before and after Fig. 3 A and 3B illustrates according to the amendment of the disclosed embodiments.
Embodiment
Fig. 1 discussed below carries out to 3 and various embodiments for describing the principle of present disclosure in patent document by means of only the mode illustrated, and should be interpreted as by any way limiting the scope of the disclosure.Those skilled in the art will appreciate that the principle of present disclosure can realize in the equipment of any suitable layout.Many innovative teachings of the application are described with reference to exemplary, non-limitative embodiment.
In variation (variational) modeling (" simultaneous techniques " process such as used in Production Lifecycle Management softcom limited of Siemens product), change usually expresses with variational form.Variational systems describes the relation between the parameter of the object model of curve or the feature in gathering and these features in geometrical constraint and dimension.Then such system uses " solver " process to process these constraint and dimensions, and together with a large amount of attached constraint maintained needed for design idea and dimension, and whole model is solved simultaneously.
Routinely, the curve geometry in two dimension (2D) or three-dimensional (3D) be control in abandoned situation or by must fully retrain whole system to control, automatically or manually control.Any one in these two kinds of methods does not have the advantage of simultaneous techniques, its to based on select, locally, fast and intuitively editor carry out robotization and do not require to retrain whole system.
Synchronous curve editing is modified to curve after allowing to infer before modification selected curve, relation between institute's junction curve and contiguous curve.The relation be pushed off implements on all curves making amendment while.This makes synchronous curve editing instrument than more powerful when conventional tool.
Basic process is: one or more curve is selected for amendment.Upon selection, find that device carries out the deduction of relation by curve.The operation correct of curve then by such as moving or offset and so on.After operation, constraint aftertreatment is performed to determine how to dispose any (sketch) constraint be pre-existing in.The result of curve modification is modified collection of curves.
The disclosed embodiments comprise for revising by inferring and solving transient state constraint the system and method be tied with free curvilinear net.It is to be noted, although describe specific embodiment in this article in the context of 2D geometric configuration, technology discussed in this article is also applicable to 3D geometric configuration.
Fig. 1 depicts the block diagram of the data handling system that wherein can realize embodiment, such as the PDM system being configured or be otherwise configured to perform process as described herein especially by software, and especially as multiple interconnection as described herein and communication system in each.The data handling system described comprises the processor 102 being connected to secondary cache/bridge 104, and this secondary cache/bridge 104 is connected to local system bus 106 then.Local system bus 106 can be such as periphery component interconnection (PCI) framework bus.What in described example, be also connected to local system bus is primary memory 108 and graphics adapter 110.Graphics adapter 110 can be connected to display 111.
Other peripherals of such as Local Area Network/wide area network/wireless (such as WiFi) adapter 112 and so on also can be connected to local system bus 106.Local system bus 106 is connected to I/O (I/O) bus 116 by expansion bus interface 114.I/O bus 116 is connected to keyboard/mouse adapter 118, disk controller 120 and I/O adapter 122.Disk controller 120 can be connected to memory storage 126, memory storage 126 can be that any suitable machine can use or machinable medium, include but not limited to: non-volatile, hard-coded type media, such as ROM (read-only memory) (ROM) or erasable, EPROM (EEPROM), magnetic tape strip unit; And user's recordable-type media, such as floppy disk, hard disk drive and aacompactadisk read onlyamemory (CD-ROM) or digital versatile disc (DVD) and other known optics, electric or magnetic storage apparatus.
What in shown example, be also connected to I/O bus 116 is audio frequency adapter 124, and loudspeaker (not shown) can be connected to audio frequency adapter 124 for playing sound.Keyboard/mouse adapter 118 is provided for the connection of indication equipment (not shown), all mouses in this way of this indication equipment, trace ball, track pointer etc.
Those of ordinary skill in the art will understand, and the hardware described in FIG can change for specific implementation mode.Such as, other peripherals of such as CD drive etc. and so on also can additionally or replace the hardware described and use.The example described only is provided and is not intended to imply that the framework about present disclosure limits for illustrative purposes.
Data handling system according to the embodiment of present disclosure comprises the operating system adopting graphic user interface.Operating system is permitted multiple display window and is rendered simultaneously in graphic user interface, and wherein interface is supplied to different application or is supplied to the different example of same application by each display window.Cursor in graphic user interface can be manipulated by indication equipment by user.The position of cursor can be changed and/or the event of button and so on of such as clicking the mouse can be generated to activate the response of expectation.
One of various commercial operation system (is such as positioned at Redmond, the product MicrosoftWindows of the Microsoft in Wash. tMa version) can be used when being appropriately modified.Revise or creation of operating system according to present disclosure as described.
LAN/WAN/ wireless adapter 112 can be connected to the part that network 130(is not data handling system 100), network 130 can be the combination of any public or private data disposal system network or network, as known to those skilled in the art, internet is comprised.Data handling system 100 can be communicated with server system 140 by network 130, and server system 140 neither the part of data handling system 100, but such as can be implemented as independent data handling system 100.
The relation inferred that various the disclosed embodiments make it possible between use curve carrys out synchro edit curvilinear net.Relation can comprise as connected, parallel, tangent or orthogonality relation, aspect mirror image or relativeness etc.The disclosed embodiments can also use concrete operations, such as moving curve, skew moving curve, to curve adjustment size and delete curve.
In some systems, when user is just being operated in the curve modification in the large-scale unfettered set of curve, be difficult to keep design idea.User may want to keep curve to connect, parallel, tangent etc.These relations are not present in model, but they can detect existing curve time be found because curve be connect, parallel or tangent.The disclosed embodiments find the relation of not explicitly existence and implement them.
In some systems, user may attempt to revise curve, but existing geometry and dimension constraint hinder him.In many cases, user is attempting carrying out explicitly to retrain the amendment of conflicting with existing really.The disclosed embodiments allow function to overthrow existing relation.After modification, aftertreatment will make geometry as much as possible and dimension constraint regeneration.
The disclosed embodiments can find the relation between curve and contiguous curve, and can use variation solver to infer and maintain the transient state constraint for the duration of operation.The disclosed embodiments usable range can limit region of search for relation.This scope can be little, is such as limited to the region close to selected objects, or large, anything being shown in this way or loading all.
The disclosed embodiments allow user to control to find or which in the relation inferred is implemented.The disclosed embodiments can carry out aftertreatment to result and the explicit constraint attempting to make to be pre-existing in regenerates.
Fig. 2 illustrates the process flow diagram of the process according to the disclosed embodiments that can such as be performed by one or more PLM or PDM system (being usually called as " system "), and other figure is for illustrating the operation on model as described herein.
System acceptance has the geometric model (205) of multiple curve.As used herein, " reception " can comprise load from memory storage, receive from another equipment or process, via with the receiving alternately of user.Curve can be in 3D environment or they can be in 2D environment; This example process describes in the context of 2D environment.
One or more selection (210) in the plurality of curve of system acceptance.This can be such as that the user undertaken by the user interface of system is selected.As a part for this process, system can determine the selection intention of user.
System discovery geometric model with the curve of selected curvilinear correlation and corresponding relation (215).During this process, system is passed through defined relation and is found the curve with selected curvilinear correlation.It can find such as tangent, parallel, conllinear, with one heart, equal radii, symmetrical etc. and so on relation.Curves Recognition can also identify the arc of radiussed and maintain the fillet relation with constant circular angular radius.
These relations can be maintained while feature operation, therefore selected relation also will for output Yan Weizhen.The curve found in Curves Recognition process and relation are added to selected collection of curves, and selected collection of curves comprises the curve and the curve of system discovery and relation that user selects.This selected collection of curves can use in other process.
The relation that user is hidden can also be there is, such as overlap and tangent relation.These relations find based on the tolerance of the curve be in selection.Threshold tolerance for this point can be defined by the user.User can select with larger tolerance work to allow make the bad curvilinear net work in imported geometric configuration and repair this bad curvilinear net.Maintain these overlap and tangent relation be not optional in most embodiments.
Curves Recognition process can perform in defined scope.For some relations in Curves Recognition, do not need scope.Scope self can be determined by selection.Tangent by only finding and the curve of selected contact of a curve, which has limited himself.With one heart by only finding with selected arc or justifying concentric arc and circle, there is not this and become uncontrollable risk.
But the such as constraint of parallel, conllinear, equal radii and symmetry and so on may cause long search time when sketch comprises many curves.For following relation, when there is many curves, scope is preferred fatefully: parallel, conllinear, equal radii and symmetry, vertical, level, vertically and equal length.
Nearly scope is defined as comprising only as the curve in the identical loop of curve selected by relation curve or crossing loop or adjacent loops.If there is not other curve between the loop and this loop of selected curve, then loop is adjacent loops.
Such as, for two parallel lines, find lap vertically.If do not have lap, then these two lines are non-conterminous.From the mid point of lap, system can draw line.If this line not with other curve intersection, then these two parallel lines are adjacent.
For the line of two conllinear, if they have lap, then they are adjacent.Otherwise system can draw it closest to the line between end.If this line is not crossing with other loop, then the line of these two conllinear is adjacent.
For the circle/arc of two equal radii, if they intersect, then they are adjacent.Otherwise system can draw the minor increment line between them.If this line is not crossing with other loop, then these two circle/arcs are adjacent.
Additionally, the contiguous curve being connected to the end that curve is trooped will be there is.
In various embodiments, the curve selected by user will be typically made up of one or more loop opened wide or close.In the end of unlimited loop, connected curve may be there is.These curves are contiguous curves.Coincidence relation between contiguous curve and this selection can be found and maintain.Coincidence relation between contiguous curve and the remainder of sketch also can implicitly be maintained.These curves connected exceeding contiguous extra curvature even must not be within scope.These curves typically will not be modified.
Fig. 3 A and 3B respectively illustrates the exemplary 2D geometric model 300 before and after amendment.In this example, system have received the selection of curve 302 as illustrated in fig. 3 from user.System use curve identifying finds that curve 304a and 304b is connected to curve 302 and the end of curve 304a and 304b and curve 302 conllinear.System use curve identifying finds that curve 306a with 306b is the curve that be connected contiguous for curve 304a with 304b respectively.All these curves and relation thereof can be added to selected collection of curves.
User for the moving curve 302 amendment/editor of system acceptance model, as illustrated in figure 3b.Amendment moves curve 302 and curve 304a/304b and maintains the connection before curve 304a/304b and contiguous curve 306a/306b.Residual curve is not modified.They keep fixing, even if they may be in initial selected scope inside.
Turn back to Fig. 2, system can collection of curves (220) selected by pre-service, comprises curve and relation.Find that the curve that device is selected or identified may have the geometry and dimension constraint that are applied to them by curve.Curve modification will be allowed to operate to override (override) these constraint and dimensions, but how most its of trial simultaneously may maintain design idea.
This pre-service can comprise the constrained system (or constrain set of model) of deactivation model until amendment (hereafter) is defined.Now, be moved under the restriction that selected curve can only apply in Curves Recognition relation.
The amendment (225) of curve selected by system acceptance.This can be such as wherein user " to be pulled " by selected curve to reposition by user interface mutual, or can be other amendment of known for a person skilled in the art selected curve, such as move, rotate, mobile/to rotate, skew is mobile, change size or even deletion action.User uses the user interface being suitable for selected amendment type to provide amendment input.
System performs amendment (230) according to selected curve set is incompatible, to produce modified geometric model and modified selected collection of curves.Typically, this is variation solving, and comprises curve selected by revising as defined in user, together with other curve and the relation of selected collection of curves.Amendment is disposed by solution procedure.In various embodiments, amendment is local and does not relate to the constrained system of model, even if operation occurs in affined sketch feature also like this.
Modified geometric model can be use the dynamic previewing of Output rusults to show; User can change amendment (in this case, process can repeat to receive amendment) while checking dynamic previewing.
System can the modified selected collection of curves (235) of aftertreatment, comprises curve and relation.When performing retouching operation on the curve retrained in advance, then should perform constraint aftertreatment.After modification, constraint solver is known curve according to modified geometric model or modified selected collection of curves and will be in where.System can reactivate the constrained system of model, and works downwards along the list of pretreated constraint, and attempts derepression and apply constraint as much as possible and dimension, and does not make Output rusults impaired.
For the constraint relevant to modified selected collection of curves, system will check that whether new position is compatible with constraint.If new position is compatible, then system incites somebody to action application constraint again.If new position is incompatible with constraint, then deletion constraint.
If as the result of amendment, in constraint or dimension, the curve that uses no longer is present in modified geometric model, then this constraint or dimension deleted.If suppress to conflict with modified geometric model to constraint release, then the constraint of these sketches and dimension are by deleted.In this case, the value of dimension constraint can be changed and solve to meet.
There is some constraint, it can by adjusting them and maintaining after editing.Such as, fixed constraint can not have the coordinate be associated, and therefore it can be retained, and after editor and mobile correlation curve, new fixed position will be reposition.As another example, constant length constraint can not have the expression formula be associated, and therefore it can be retained, and after editing, hard coded length is adjusted to new length.Light from this, the new length of line will be constant length for solving subsequently.Constant angle constraint can maintain in a similar manner.Whether can maintain the constraint of all even non-homogeneous convergent-divergent, which defining model can by convergent-divergent equably on all axles or concrete axle.
When it is possible, system will maintain the constraint of any driving dimension.On duty when changing, then system will carry out following operation:
Expression formula is value/formula, and its other place in geometric model is not used.In this case, system can edit expressions to mate new value, and can to inform the user: drive the expression formula of dimension to be adjusted to mate new value.Any formula used in expression formula is lost now.
Expression formula is value/formula, but is used by another expression formula in geometric model.In this case, system can make dimension be the dimension of reference, and can inform the user: make dimension be that the dimension of reference is to prevent other curve movement.User can make dimension effectively with recovery relation.
System storage or show modified geometric model (240), comprises modified selected collection of curves and comprises any constraint reactivating and apply.Curve in modified selected collection of curves has been a part for modified geometric model; The relation found and other date of modified selected collection of curves are no longer required, and therefore they can deleted or maintenance in various embodiments.System can store modified selected collection of curves for processing identical selected curve further to exempt the process repeating to find correlation curve.If any curve is used as the input to another feature in downstream, then this relation must be maintained.Display character can not change.
Certainly, those skilled in the art will recognize that, unless indicated particularly or requirement by the sequence of operation, some step in above-described process can be omitted, simultaneously or in a sequence perform or perform with different orders.
Those skilled in the art will recognize that, for simplicity and clearness, the complete structure be suitable for for all data handling systems of present disclosure is not described herein with operating in or is described.Replace, describe and describe as present disclosure unique or only so many in data handling system necessary for the understanding of present disclosure.The structure of data handling system 100 and the remainder of operation can meet any one in various current realization as known in the art and practice.
Importantly to point out, although present disclosure comprises the description in the context of complete functional system, but those skilled in the art will understand, the mechanism of present disclosure at least partly can in a variety of forms in the machine of any one can use, computing machine can use or the form of instruction that comprises in computer-readable medium and distributing, and present disclosure is suitable for equally, and no matter how implement the particular type of the instruction of distribution or signal bearing medium or storage medium for reality.Machine can use/and readable or computing machine can use/and the example of computer-readable recording medium comprises: non-volatile, hard-coded type media, such as ROM (read-only memory) (ROM) or erasable, EPROM (EEPROM); And user's recordable-type media, such as floppy disk, hard disk drive and aacompactadisk read onlyamemory (CD-ROM) or digital versatile disc (DVD).
Although describe in detail the exemplary embodiment of present disclosure, but those skilled in the art will appreciate that can when do not depart from present disclosure making various change disclosed herein when the spirit and scope of its most broad overall form, substitute, changes and improvements.
Description in the application should not be read as and mean that any specific factor, step or function are the requisite items that must be included in right: the scope by the theme of patent protection is only limited by allowed claim.In addition, these claims are all not intended to the sixth item quoting 35USC § 112, unless definite word " for ... device " follow participle below.

Claims (20)

1., for revising a method for geometric model (300), the method is performed by data handling system (100) and is comprised:
Receive (205) geometric model by data handling system, this geometric model comprises multiple curve (302/304a/304b/306a/306b);
The selection of the curve (302) in (210) the plurality of curve is received by data handling system;
At least one other curve (304a) with selected curvilinear correlation in (215) the plurality of curve is found by data handling system, and find selected relation between curve and this at least one other curve, comprise and add selected curve, this at least one other curve and described relation to selected collection of curves;
By the selected collection of curves of data handling system pre-service (220), comprise the set of deactivation for the constraint of geometric model;
Received the amendment of (225) selected curve by data handling system, and revise (230) selected collection of curves, to produce modified geometric model (Fig. 3 B) and modified selected collection of curves;
By the modified selected collection of curves of data handling system aftertreatment (235), comprise the constraint reactivating and apply for geometric model; And
Show and store (240) modified geometric model.
2. the process of claim 1 wherein that described relation comprises tangent, parallel, conllinear, one or more with one heart, in equal radii or symmetry.
3. the method any one of claim 1-2, wherein amendment be mobile, rotate, skew, to change in size or deletion action one or more.
4. the method any one of claim 1-3, wherein finds that at least one other curve uses the scope defined to perform.
5. the method any one of claim 1-4, the constraint wherein reactivating and apply for geometric model (300) is not applied and revises the constraint conflicted.
6. the method any one of claim 1-4, the constraint wherein reactivating and apply for geometric model (300) comprises and changes the dimension of conflicting with amendment and retrain.
7. the method any one of claim 1-6, wherein geometric model (300) is two dimensional model.
8. a data handling system (100), comprising:
Processor (102); And
Addressable memory (108), described data handling system is configured to especially:
Receive (205) geometric model (300), this geometric model comprises multiple curve (302/304a/304b/306a/306b);
Receive the selection of the curve (302) in (210) the plurality of curve;
Find in (215) the plurality of curve and at least one other curve (304a) of selected curvilinear correlation and relation selected by finding between curve and this at least one other curve, comprise and add selected curve, this at least one other curve and described relation to selected collection of curves;
The selected collection of curves of pre-service (220), comprises the set of deactivation for the constraint of geometric model;
Receive the amendment of (225) selected curve and revise (230) selected collection of curves, to produce modified geometric model (Fig. 3 B) and modified selected collection of curves;
The modified selected collection of curves of aftertreatment (235), comprises the constraint reactivating and apply for geometric model; And
Display and storage (240) modified geometric model.
9. the data handling system of claim 8, wherein said relation comprises tangent, parallel, conllinear, one or more with one heart, in equal radii or symmetry.
10. the data handling system any one of claim 8-9, wherein amendment be mobile, rotate, skew, to change in size or deletion action one or more.
Data handling system any one of 11. claim 8-10, wherein finds that at least one other curve uses the scope defined to perform.
Data handling system any one of 12. claim 8-11, the constraint wherein reactivating and apply for geometric model (300) is not applied and revises the constraint conflicted.
Data handling system any one of 13. claim 8-11, the constraint wherein reactivating and apply for geometric model (300) comprises and changes the dimension of conflicting with amendment and retrain.
Data handling system any one of 14. claim 8-13, wherein geometric model (300) is two dimensional model.
15. 1 kinds of non-transitory computer-readable medium utilizing executable instruction to encode (126), described executable instruction makes one or more data handling system (100) when being performed:
Receive (205) geometric model (300), this geometric model comprises multiple curve (302/304a/304b/306a/306b);
Receive the selection of the curve (302) in (210) the plurality of curve;
Find in (215) the plurality of curve and at least one other curve (304a) of selected curvilinear correlation and relation selected by finding between curve and this at least one other curve, comprise and add selected curve, this at least one other curve and described relation to selected collection of curves;
The selected collection of curves of pre-service (220), comprises the set of deactivation for the constraint of geometric model;
Receive the amendment of (225) selected curve and revise (230) selected collection of curves, to produce modified geometric model (Fig. 3 B) and modified selected collection of curves;
The modified selected collection of curves of aftertreatment (235), comprises the constraint reactivating and apply for geometric model; And
Display and storage (240) modified geometric model.
The computer-readable medium of 16. claims 15, wherein said relation comprises tangent, parallel, conllinear, one or more with one heart, in equal radii or symmetry.
Computer-readable medium any one of 17. claim 15-16, wherein amendment be mobile, rotate, skew, to change in size or deletion action one or more.
Computer-readable medium any one of 18. claim 15-17, wherein finds that at least one other curve uses the scope defined to perform.
Computer-readable medium any one of 19. claim 15-18, the constraint wherein reactivating and apply for geometric model (300) is not applied and revises the constraint conflicted.
Computer-readable medium any one of 20. claim 15-18, the constraint wherein reactivating and apply for geometric model (300) comprises and changes the dimension of conflicting with amendment and retrain.
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CN109791574A (en) * 2016-09-28 2019-05-21 西门子产品生命周期管理软件公司 For editing the variation modeling method and system of geometric object
CN112970023A (en) * 2018-09-04 2021-06-15 西门子工业软件有限公司 Counter-constraint configuration and implementation for computer-aided design (CAD) models

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