IGESSelect

This package defines the library of the most used tools for IGES Files : Selections & Modifiers specific to the IGES norm, and the most needed converters.

Performs Actions specific to IGESSelect, i.e. creation of IGES Selections and Dispatches, plus dumping specific to IGES.

This class allows to add comment lines on writing an IGES File These lines are added to Start Section, instead of the only one blank line written by default.

Adds a Group to contain the entities designated by the Selection. If no Selection is given, nothing is done.

Does the absolutely effective corrections on IGES Entity. That is to say : regarding the norm in details, some values have mandatory values, or set of values with constraints. When such values/constraints are univoque, they can be forced. Also nullifies items of Directory Part, Associativities, and Properties, which are not (or not longer) in <target> Model.
Works by calling a BasicEditor from IGESData Works with the specific IGES Services : DirChecker which allows to correct data in "Directory Part" of Entities (such as required values for status, or references to be null), and the specific IGES service OwnCorrect, which is specialised for each type of entity.
Remark : this does not comprise the computation of use flag or subordinate status according references, which is made by the ModelModifier class ComputeStatus.
The Input Selection, when present, designates the entities to be corrected. If it is not present, all the entities of the model are corrected.

Changes Level List (in directory part) to a new single value Only entities attached to a LevelListEntity are considered If OldNumber is defined, only entities whose LevelList contains its Value are processed. Else all LevelLists are.
Remark : this concerns the Directory Part only. The Level List Entities themselves (their content) are not affected.
If NewNumber is defined (positive or zero), it gives the new value for Level Number. Else, the first value of the LevelList is set as new LevelNumber

Changes Level Number (as null or single) to a new single value Entities attached to a LevelListEntity are ignored Entities considered can be, either all Entities but those attached to a LevelListEntity, or Entities attached to a specific Level Number (0 for not defined).
Remark : this concerns the Directory Part only. The Level List Entities themselves (their content) are not affected.

Computes Status of IGES Entities for a whole IGESModel. This concerns SubordinateStatus and UseFlag, which must have some definite values according the way they are referenced. (see definitions of Logical use, Physical use, etc...).
Works by calling a BasicEditor from IGESData. Works on the whole produced (target) model, because computation is global.

This class gives information about Level Number. It counts entities according level number, considering also the multiple level (see the class LevelList) for which an entity is attached to each of the listed levels.
Data are available, as level number, or as their alphanumeric counterparts ("LEVEL nnnnnnn", " NO LEVEL", " LEVEL LIST")

This type of dispatch defines sets of entities attached to distinct drawings. This information is taken from attached views which appear in the Directory Part. Also Drawing Frames are considered when Drawings are part of input list.
Remaining data concern entities not attached to a drawing.

This type of dispatch defines sets of entities attached to distinct single views. This information appears in the Directory Part. Drawings are taken into account too, because of their frames (proper lists of annotations).
Remaining data concern entities not attached to a single view.

Dumper from IGESSelect takes into account, for SessionFile, the classes defined in the package IGESSelect : Selections, Dispatches, Modifiers.

This class is aimed to display and edit the Directory Part of an IGESEntity.

This class is aimed to display and edit the Header of an IGES Model : Start Section and Global Section.

This class gives control out format for floatting values : ZeroSuppress or no, Main Format, Format in Range (for values around 1.), as IGESWriter allows to manage it. Formats are given under C-printf form.

IGESName is a Signature specific to IGESNorm : it considers the Name of an IGESEntity as being its ShortLabel (some sending systems use name, not to identify entities, but ratjer to classify them).

IGESTypeForm is a Signature specific to the IGES Norm : it gives the signature under two possible forms :

• as "mmm nnn", with "mmm" as IGES Type Number, and "nnn" as IGES From Number (even if = 0) [Default]
• as "mmm" alone, which gives only the IGES Type Number

Rebuilds Drawings which were bypassed to produce new models. If a set of entities, all put into a same IGESModel, were attached to a same Drawing in the starting Model, this Modifier rebuilds the original Drawing, but only with the transferred entities. This includes that all its views are kept too, but empty; and annotations are not kept. Drawing Name is renewed.
If the Input Selection is present, tries to rebuild Drawings only for the selected entities. Else, tries to rebuild Drawings for all the transferred entities.

Rebuilds Groups which were bypassed to produce new models. If a set of entities, all put into a same IGESModel, were part of a same Group in the starting Model, this Modifier rebuilds the original group, but only with the transferred entities. The distinctions (Ordered or not, "WithoutBackP" or not) are renewed, also the name of the group.
If the Input Selection is present, tries to rebuild groups only for the selected entities. Else, tries to rebuild groups for all the transferred entities.

Removes Curves UV or 3D (not both !) from Faces, those designated by the Selection. No Selection means all the file.

Selects a list built as follows : Groups are entities type 402, forms 1,7,14,15 (Group, Ordered or not, "WithoutBackPointer" or not).
Entities which are not GROUP are taken as such For Groups, their list of Elements is explore Hence, level 0 (D) recursively explores a Group if some of its Elements are Groups. level 1 explores just at first level

Selects a list built as follows : Subfigures correspond to.

• Definition (basic : type 308, or Network : type 320)
• Instance (Singular : type 408, or Network : 420, or patterns : 412,414)
  Entities which are not Subfigure are taken as such For Subfigures Instances, their definition is taken, then explored itself For Subfigures Definitions, the list of "Associated Entities" is explored Hence, level 0 (D) recursively explores a Subfigure if some of its Elements are Subfigures. level 1 explores just at first level (i.e. for an instance, returns its definition)

This selection gets the Drawings attached to its input IGES entities. They are read through the Single Views, referenced in Directory Parts of the entities.

This selection returns the faces contained in an IGES Entity or itself if it is a Face Face means :

• Face (510) of a ManifoldSolidBrep
• TrimmedSurface (144)
• BoundedSurface (143)
• Plane with a Bounding Curve (108, form not 0)
• Also, any Surface which is not in a TrimmedSurface, a BoundedSurface, or a Face (FREE Surface) -> i.e. a Face for which Natural Bounds will be considered

This selection gets in all the model, the entities which are attached to the drawing(s) given as input. This includes :

• Drawing Frame (Annotations directky referenced by Drawings)
• Entities attached to the single Views referenced by Drawings

This selection gets in all the model, the entities which are attached to the views given as input. Only Single Views are considered. This information is kept from Directory Part (View Item).

This selection looks at Level Number of IGES Entities : it considers items attached, either to a single level with a given value, or to a level list which contains this value.
Level = 0 means entities not attached to any level
Remark : the class CounterOfLevelNumber gives information about present levels in a file.

Selects Entities which have a given name. Consider Property Name if present, else Short Label, but not the Subscript Number First version : keeps exact name Later : regular expression.

This Selection returns the pcurves which lie on a face In two modes : global (i.e. a CompositeCurve is not explored) or basic (all the basic curves are listed).

This selection gets the Single Views attached to its input IGES entities. Single Views themselves or Drawings as passed as such (Drawings, for their Annotations).

This selections uses Subordinate Status as sort criterium It is an integer number which can be : 0 Independent 1 Physically Dependent 2 Logically Dependent 3 Both (recorded).

• to sort : 4 : 1 or 3 -> at least Physically 5 : 2 or 3 -> at least Logically 6 : 1 or 2 or 3 -> any kind of dependence (corresponds to 0 reversed)

This selection looks at Blank Status of IGES Entities Direct selection keeps Visible Entities (Blank = 0), Reverse selection keeps Blanked Entities (Blank = 1).

Sets a Global (Header) Parameter to a new value, directly given Controls the form of the parameter (Integer, Real, String with such or such form), but not the consistence of the new value regarding the rest of the file.
The new value is given under the form of a HAsciiString, even for Integer or Real values. For String values, Hollerith forms are accepted but not mandatory Warning : a Null (not set) value is not accepted. For an empty string, give a Text Parameter which is empty

Sets/Clears Short Label of Entities, those designated by the Selection. No Selection means all the file.
May enforce, else it sets only if no label is yet set Mode : 0 to clear (always enforced) 1 to set label to DE number (changes it if already set)

Sets IGES Version (coded in global parameter 23) to be at least IGES 5.1 . If it is older, it is set to IGES 5.1, and LastChangeDate (new Global n0 25) is added (current time) Else, it does nothing (i.e. changes neither IGES Version nor LastChangeDate).

Gives Color attached to an entity Several forms are possible, according to <mode> 1 : number : "Dnn" for entity, "Snn" for standard, "(none)" for 0 2 : name : Of standard color, or of the color entity, or "(none)" (if the color entity has no name, its label is taken) 3 : RGB values, form R:nn,G:nn,B:nn 4 : RED value : an integer 5 : GREEN value : an integer 6 : BLUE value : an integer Other computable values can be added if needed : CMY values, Percentages for Hue, Lightness, Saturation.

Gives D.E. Level Number under two possible forms :

• for counter : "LEVEL nnnnnnn", " NO LEVEL", " LEVEL LIST"
• for selection : "/nnn/", "/0/", "/1/2/nnn/"
  For matching, giving /nn/ gets any entity attached to level nn whatever simple or in a level list

Gives D.E. Status under the form i,j,k,l (4 figures) i for BlankStatus j for SubordinateStatus k for UseFlag l for Hierarchy.
For matching, allowed shortcuts B(Blanked) or V(Visible) are allowed instead of i I(Independant=0), P(Physically Dep.=1), L(Logically Dep.=2) or D(Dependant=3) are allowed instead of j These letters must be given in their good position For non-exact matching : a letter (see above), no comma : only this status is checked nothing or a star between commas : this status is OK

This type of Transformer allows to convert Spline Curves (IGES type 112) and Surfaces (IGES Type 126) to BSpline Curves (IGES type 114) and Surfac (IGES Type 128). All other entities are rebuilt as identical but on the basis of this conversion.
It also gives an option to, either convert as such (i.e. each starting part of the spline becomes a segment of the bspline, with continuity C0 between segments), or try to increase continuity as far as possible to C1 or to C2.
It does nothing if the starting model contains no Spline Curve (IGES Type 112) or Surface (IGES Type 126). Else, converting and rebuilding implies copying of entities.

Allows to Change the Creation Date indication in the Header (Global Section) of IGES File. It is taken from the operating system (time of application of the Modifier). The Selection of the Modifier is not used : it simply acts as a criterium to select IGES Files to touch up.

Sets the File Name in Header to be the actual name of the file If new file name is unknown, the former one is kept Remark : this works well only when it is Applied and send time If it is run immediately, new file name is unknown and nothing is done The Selection of the Modifier is not used : it simply acts as a criterium to select IGES Files to touch up.

Allows to Change the Last Change Date indication in the Header (Global Section) of IGES File. It is taken from the operating system (time of application of the Modifier). The Selection of the Modifier is not used : it simply acts as a criterium to select IGES Files to touch up. Remark : IGES Models noted as version before IGES 5.1 are in addition changed to 5.1.

Sorts IGES Entities on the views and drawings. In a first step, it splits a set of entities according the different views they are attached to. Then, packets according single views (+ drawing frames), or according drawings (which refer to the views) can be determined.
It is a TShared, hence it can be a workomg field of a non- mutable object (a Dispatch for instance)

Performs Read and Write an IGES File with an IGES Model.