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outside of the United States. Contact PTC for further information. GB2366639B 13-October-2004

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vii

Table of Contents DataDoctor .................................................................................................... 1

Redefining Imported Attributes ...................................................................... 1

About Redefining Imported Attributes .......................................................... 1

To Redefine Imported Attributes ................................................................. 1

To Delete Selected Entities of an Imported Surface........................................ 1

To Join Surfaces in an Imported Feature ...................................................... 2

To Exclude Surfaces from a Quilt................................................................. 2

Excluding Surfaces .................................................................................... 3

To Close Gaps and Fix Tangency ................................................................. 3

To Fix Boundaries with Problem Surfaces...................................................... 4

Fixing Boundaries with Configuration Options................................................ 4

SEL CHAINS Menu..................................................................................... 5

MAX VALUE Menu...................................................................................... 5

To Fix the Quilt Boundaries......................................................................... 5

To Edit a Boundary.................................................................................... 6

EDIT BNDRY Menu .................................................................................... 6

Creating a Chain of Edges .......................................................................... 7

Modifying an Existing Chain of Edges ........................................................... 7

To Fix the Quilt Vertices ............................................................................. 8

Cleaning Up the Imported Geometry .............................................................. 9

About Cleaning Up the Imported Geometry................................................... 9

Automatic or Manual Cleanup................................................................... 9

Collapsing Geometry............................................................................... 9

Selecting Features for Collapsing Geometry ............................................... 9

To Manually Redefine Imported Features...................................................... 9

Suggested Tools and Strategies for Cleaning Up Imported Geometry ..............11

Guidelines for Manual Surface Cleanup........................................................11

Combination of Data Types........................................................................11

Tip: Working with Edit Boundary Functionality..............................................12

Table of Contents

viii

To Automatically Clean Up the Surface........................................................12

To Display Deviation Surface Analysis .........................................................13

Using the Automatic Surface Cleanup Dialog Box..........................................14

Modifying Constraints Color Conventions .....................................................15

To Collapse the Geometry .........................................................................16

SELECT FEAT Menu ..................................................................................16

Child Menu..............................................................................................16

Tip: Merging Pro/ENGINEER Features..........................................................17

Index...........................................................................................................19

1

DataDoctor

Redefining Imported Attributes

About Redefining Imported Attributes

When you import geometry, you can revise imported attributes to determine whether

an imported feature should be a solid or whether adjacent surfaces should be joined.

To Redefine Imported Attributes

1. Select the feature in the Model Tree and right-click.

2. Click Edit Definition on the shortcut menu.

Alternatively, select the feature and click Edit > Definition.

3. Click Edit > Feature Properties. The Properties menu appears.

4. Select one the following:

o Make Solid—Generates a solid feature from the imported data. When not

selected, a surface feature is generated.

o Join Surfs—Joins surfaces that share the same boundary whenever

possible.

o Join Layers—Joins layers of all selected surfaces.

Note: Make Solid and Join Surfs work in combination. That is, when you select

Make Solid, Join Surfs is automatically selected and a closed volume with

material is created. Conversely, if you do not select Join Surfs, Make Solid is

also not selected. If the imported geometry has been converted into a solid

protrusion, both Make Solid and Join Surfs are selected.

To Delete Selected Entities of an Imported Surface

1. Select a feature in the Model Tree and right-click.


Alternatively, click Edit > Definition.

3. Click Edit > Delete. The DELETE ENT menu appears.

4. Clear the selections for the types of entities that you do not want to select. The

entity types are:

o Point—Selects points for deletion (selected by default).

o Datum Plane—Selects datum planes for deletion (selected by default).

o Curve—Selects curves for deletion (selected by default).

o Surface—Selects surfaces for deletion.

DataDoctor - Help Topic Collection

2

5. Click Select Item on the DELETE ENT menu. Use the SELECT menu to select

the items to delete.

6. Click Done Sel or specify other entity types again.

7. To continue selecting entities, use the DELETE ENT menu and click Select Item

again. The SELECT menu reappears so you can add items to your selection.

Rehighlight in the SELECT menu highlights the cumulative results of all

selections.

8. Click Done on the DELETE ENT menu.

To Join Surfaces in an Imported Feature




3. Click Edit > Feature Properties. The Properties menu appears. Make Solid

and Join Surfs are both selected. To select only Join Surfs, clear the selection

and select it again.

Note: When you clear Join Surfs, Make Solid is also not selected.

4. Click Join Surfs.

5. Click Done/Return. Surfaces that share the same boundary are joined.

6. Use Fix Bndries to repair geometry and join additional surface boundaries. After

all surfaces are joined and all quilts have created closed volumes, you can fill

these volumes with material by clearing Join Surfs.

To Exclude Surfaces from a Quilt



Alternatively, click Edit > Definition and select the feature.

3. Click Edit > Feature Properties. The Properties menu appears.

4. Click Exclude Surfs. Boundaries of the surfaces that are in the set are

highlighted in blue. The EXCLUDE SRFS menu appears.

5. Select one of the following:

o Add—Adds surfaces to the set of surfaces to be excluded.

o Remove—Removes surfaces from the set of surfaces to be excluded.

o Remove All—Removes all surfaces from the excluded set of surfaces.

6. Click Done. The imported feature regenerates if Join Surfs is selected. All

boundaries of the excluded surfaces are displayed in yellow.

DataDoctor

3

Excluding Surfaces

Use Exclude Surfs in the Properties menu to separate some of the imported

surfaces after they have been joined using Join Surfs, or specify surfaces to which

Join Surfs should not be applied.

Use Exclude Surfs to select surfaces to be excluded from a topology. You can add

or remove surfaces from the excluded set.

Some surfaces may appear joined with the quilt even after exclusion. These surfaces

can be excluded only in groups because they were joined as a quilt during import.

The original surface is broken down into multiple surface patches because of

discontinuities in surface curvature or tangency, or both. These surface patches are

not individual surfaces. You cannot completely exclude them from the quilt using

Exclude Surfs.

To Close Gaps and Fix Tangency

After surfaces have been joined automatically using Join Surfs, some gaps may still

be present. They are displayed in a model as one-sided surface edges (edges that

are not shared by another surface) in yellow. Use Fix Bndries in the MANUAL

REPAIR menu to repair them manually. You can also improve tangency conditions.

The fix boundaries procedure is nonparametric and therefore not reversible. To undo

your changes, import the file again.




3. Click Geometry > Heal Geometry > Manual. The FIX OPTIONS menu

appears.

4. Click Zip Gaps or Fix Tangency.

5. Select edges using the SEL CHAINS menu.

6. To set the criterion value, use the MAX VALUE menu.

7. After you have selected the first chain of edges, click Done Sel on the SELECT

menu.

8. Click Done on the EDGE SEL menu. The selected edges are highlighted in blue.

9. Select the second set of edges.

After you have selected both sets, a maximum gap size and a range of dihedral

angles measured between relevant surfaces in the message window are printed.

10. Click Unsel Chain to clear the selection of edges.

11. Use the EDGE SEL menu to indicate edges that you do not want selected.

12. Select all edges and use the SEL CHAINS menu.


4

13. Select Zip Gaps to close gaps, or FixTangency to fix tangency. Surfaces for the

selected edges are repaired. As the quilt is processed, a red mesh displays the

repaired surfaces. After processing is complete, you can verify the results of the

complete procedure. Edges that are not repaired remain blue.

14. To accept or reject the current state of the model, click Accept or Reject,

respectively, on the ACCEPT FIX menu. If you click Accept, you cannot undo

these changes.

15. If gaps remain in the imported surfaces, return to Step 3, increase the criterion

value, and continue through Step 7.

To Fix Boundaries with Problem Surfaces




appears.


o Zip Gaps—Closes gaps between surfaces so that they can then be joined

using Join Surfs.

o Fix Tangency—Makes surfaces tangent along selected edges. You can

apply tangency only to small (less than 10 degrees) dihedral angles.

Boundaries that have gaps are not automatically selected. Use Fix

Tangency on a quilt that is completely zipped and has fixed vertices.

o FixQuiltBndry—Converts a multi-segment quilt boundary to a single edge.

Only almost tangential segments are considered for a possible merge.

o Edit Bndry—Enables you to manually alter the trimming boundary of a

surface.

o FixVertices—Moves vertices in a set for better alignment.

Fixing Boundaries with Configuration Options

Imported geometry can contain inconsistencies in topology, incorrect alignments, or

discontinuities in geometric entities. When you import surfaces to Pro/ENGINEER,

some of the surface boundaries may require repair. Pro/ENGINEER provides a set of

tools to repair these problems.

You can instruct the system to repair some problem boundaries in the imported

surfaces during the import process by setting the following configuration options:

• fix_boundaries_on_import

• intf3d_in_close_open_boundaries

For more information, see the Pro/ENGINEER Interface Help module.

DataDoctor

5

SEL CHAINS Menu

Auto Select automatically selects all problem boundaries based on the value of

MaxGapDist or MaxDihedral.

While selecting, you are informed of the progress and displays a Stop sign. Use the

Stop sign to interrupt the selection process at any time. After the selection is

complete, the selected edges are highlighted in blue. You can then add more edges

manually using Sel Chain, Single, or Chain.

If you are not satisfied with the results of the automatic search, you can reset the

selection criteria and use Auto Select again. By increasing the maximum value of

the selection range, you can cause larger gaps (when closing gaps) or larger dihedral

angles (when fixing tangency) to be included in the selection.

MAX VALUE Menu

Default—Uses the default value.

Enter—Enables you to type a maximum value of gaps between boundary edges and

vertices if zipping gaps, or maximum dihedral angle if fixing tangency. If you know

the accuracy at which the part was created, it can serve as an initial value for setting

the maximum gap criterion. For MaxGapDist and MaxDihedral, type values in

model length units and model angular units, respectively.

The best practice is to accept the fixed geometry for all boundaries at a given value,

increase the value if there are any selected edges that could not be fixed or any

problem edges that were not selected, and use Auto Select again. The gap and

dihedral setting for a particular boundary remain with the fixed tangency and gaps.

Start with the default value.

When using MaxGapDist, use the accuracy level of another system as the gap is

probably smaller than the current one. The largest gap in the selected edges that

could not be fixed is measured and a slightly larger value is suggested to you.

Sel Chain—Enables you to manually select edges on both sides of the gap to be

fixed. For each side, indicate the desired selection technique using the EDGE SEL

menu.

Single—Selects individual edges forming a chain on each side of the gap.

Chain—Selects a chain of edges on each side of the gap by picking an edge from this

chain.

To Fix the Quilt Boundaries

You can find quilt boundaries (chains of one-sided edges, colored yellow) composed

of multiple segments that are almost tangential and nearly an isoline, and replace

each one with one edge.





6


appears.

4. Click FixQuiltBndry. All one-sided boundaries in yellow on the quilt are

examined and those composed of multiple segments that are almost tangential

and nearly isoline are highlighted in orange. Their end vertices are highlighted in

red. The FIXQULTBNDRY menu appears:

o Unsel Chain—Enables you to select the boundary chains that you do not

want fixed. The chains that are not selected are highlighted in red.

o Done—Continues with the current process.

o Quit—Quits the current procedure.

5. Click Done. All the highlighted boundaries are fixed except those that you had

not selected.

To Edit a Boundary





appears.

4. Click Edit Bndry.

5. Select the surface with the boundary that you want to edit. The EDIT BNDRY

menu appears.

6. Click Sel Contour to edit another surface. The CHAIN OPT menu appears.


o Select All—Selects all of the looped boundaries around the selected

surface.

o From-To—Selects the boundaries between two vertices on the selected

surface.

The chain of surface edges selected for the edit boundary procedure appears in

red.

8. Create or modify the edges using the EDIT BNDRY menu.

9. Click Preview to see the results.

10. Click Done.

EDIT BNDRY Menu

Create—Displays the CREATE menu. Makes a new chain of edges on the surface.

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7

Modify—Displays the MODIFY menu. Changes a selected chain of edges.

Delete—Removes an edge from a chain. Identify the chain by selecting its two ends

or select the orange edge.

You must replace a single open chain with a single open chain or a single closed loop

with a single closed loop before you exit the EDIT BNDRY menu. Otherwise, the

current edit boundary procedure is aborted.

Combine—Selects two chains of edges to combine into one.

Undo Last—Reverts to the state before the last procedure from the EDIT BNDRY

menu if the procedure was Create, Modify, Delete, or Combine.

Preview—Shows the results of the changes before executing them.

Geom Check—Obtains information about problem areas.

Set Domain—Allows you to mesh the domain of the surface and to expand the

domain.

Creating a Chain of Edges

If you click Create on the EDIT BNDRY menu, the CREATE menu appears with the

following:

• Project—Creates an edge by projecting a curve or a chain of edges onto the

surface.

• Make Isoline—Creates an edge by creating an isoline through a reference point.

If you click Make Isoline, a red arrow appears at the reference point, pointing

along one possible isoline direction. The CHOOSE menu appears with the

following:

o Accept—Accepts the displayed direction for creating the isoline.

o Next—Flips the red arrow to the alternative isoline direction, more or less

normal to the previously displayed one and along the surface.

o Connect—Creates an edge by connecting two or more points.

o Intersect—Creates an edge where the selected surface intersects with another

surface.

Modifying an Existing Chain of Edges

If you click Modify on the EDIT BNDRY menu, the MODIFY EDGS menu appears

with the following:

• Straighten—Replaces a subchain by a simple two-point edge.

• Merge Edges—Merges the subchain into one continuous edge. Select an edge

for the whole chain or select two vertices to define the range for the chain.

• Move Vertex—Places a vertex of the chain at a new reference point. The edges

at the vertex are straightened and any existing tangency conditions at that

vertex are removed.


8

• SetTanCond—Sets or changes tangency conditions for the edge. The start and

endpoints of the edge are marked by corresponding arrows. The TAN CONDS

menu appears with the following:

o Start—Defines the tangency at the start of the edge.

o End—Defines the tangency at the end of the edge.

o Tangent—Makes the edge tangent to a reference at the selected end. If

there are several possible references to which the edge could be tangent,

one of them is highlighted in red and the CHOOSE menu appears. Use

Next and Previous to cycle through the possible references and click

Accept. Click Flip or Okay on the DIRECTION menu to position the red

arrow to specify the direction of tangency.

o Normal—Makes the edge normal to a reference at the selected end. The

procedure for choosing the reference and the direction of normalcy is

similar to that described earlier for Tangent.

o Free—Removes the requirement for the edge to be tangent or normal to a

reference at the selected end.

• Divide—Divides the edge into two at a selected point. No tangency conditions

exist between the two new subchains at the selected point.

To Fix the Quilt Vertices

You can find quilt boundaries (chains of one-sided edges, colored yellow) composed

of multiple segments that are almost tangential and nearly an isoline. Replace each

one with one edge.





appears.

4. Click FixQuiltBndry. All one-sided boundaries in yellow on the quilt are

examined and those composed of multiple segments that are almost tangential

and nearly isoline are highlighted in orange. Their end vertices are highlighted in

red. The FIXQULTBNDRY menu appears with the following:

o Unsel Chain—Enables you to select the boundary chains that you do not

want fixed. The chains that are not selected are highlighted in red.

o Done—Continues with the current process.

o Quit—Quits the current procedure.

5. Click Done. All the highlighted boundaries are fixed, except those that you did

not select.

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9

Cleaning Up the Imported Geometry

About Cleaning Up the Imported Geometry

Before you import a geometry file, ensure the accuracy of data transfer by:

• Setting the appropriate configuration options.

• Choosing the appropriate absolute accuracy to ensure a successful data transfer.

Absolute accuracy is based on the part size and the smallest edge in the imported

feature that needs to be preserved.

After you import the geometry

• Clean up the surface either automatically or manually.

• If necessary, create Pro/ENGINEER parametric geometry to fill gaps or holes and

collapse the geometry into the imported feature.

Automatic or Manual Cleanup

Automatic surface cleanup repairs the imported quilt by rebuilding the wireframe

surfaces with minimal user interaction. The result is geometry with precision and

integrity, but there can be changes in the parametrics of the imported surface. If you

must preserve the parametrics of an imported surface, select Zip Gaps or Edit

Boundary from Manual.

Collapsing Geometry

After automatic or manual surface cleanup, you may still have an imported quilt with

a missing surface patch or geometry that cannot be repaired. After deleting the

distorted patches and recreating the missing geometry, use Collapse Geometry to

add the parametric geometry to the imported feature.

Selecting Features for Collapsing Geometry

Features such as quilts, curves, datum curves, datum planes, datum points, and

datum axes can be collapsed into the target import feature. Solids, grouped or

patterned features or both, and features created prior to the target feature cannot be

selected for collapse. After the selected features are collapsed, they are deleted from

the feature list and the Model Tree. If a selected feature has child features, you can

include the dependent features in the target feature or deal with them later.

To Manually Redefine Imported Features

Note: Save the object frequently. If there are surfaces you cannot fix, place them on

a layer and then blank the layer.

1. Select the imported quilt.

2. Identify surfaces that cannot be repaired, such as intersecting surfaces,

coincident surfaces, surfaces with incorrect geometry, and so on.


10

3. Click Geometry > Heal Geometry > Manual > Edit Bndry. The EDIT BNDRY

menu appears.

4. Select from the EDIT BNDRY menu. The CHAIN OPT menu appears.

5. Click Select All or From-To.

6. Click Geom Check on the EDIT BNDRY menu and note the diagnostics.

7. Fix overlapping geometry and coincident geometry.

8. Click Geometry > Heal Geometry > Manual > Zip Gaps. The SEL CHAINS

menu appears.

9. Select one-sided edges for zipping gaps by selecting one of the following:

o Auto Select—Selects chains automatically. You may also want to change

the maximum gap distance (gradually in steps) using MaxGapDist to get

more accurate results.

o Sel Chain—Selects chains manually.

10. Click Zip Gaps.

11. View the results and accept or reject the results based on the meshed surfaces.

12. Click Geometry > Heal Geometry > Manual > Edit Bndry > Geom Check

and note the diagnostics.

13. Fix overlapping or self intersecting surfaces based on the suggestions in Geom

Checks.

14. Click Geometry > Heal Geometry > Manual > Edit Bndry.

15. Edit patch boundaries to improve intersection and closure of the quilt.

16. Click Geom Checks and note the diagnostics.

17. Fix overlapping geometry, intersecting and invalid patches, and vertex issues.

18. Click Geometry > Heal Geometry > Manual > FixVertices to automatically

correct the vertices.

19. Click Geometry > Heal Geometry > Manual > Fix Tangency. Two-sided

edges are automatically selected to fix tangency. You can manually select edge

chains if they are not automatically selected. The ACCEPT FIX menu appears.

20. Click Geom Check and note the diagnostics. No geometry checks must exist

except those related to the quilt boundary. If these geometry checks exist, fix

them as recommended.

21. Click Geometry > Heal Geometry > Manual > FixQuiltBndry to eliminate

quilt boundary discrepancies due to multiple segment edges.

22. Click Geometry > Heal Geometry > Manual > Edit Bndry to eliminate

remaining geometry checks.

23. If there are holes in the quilt, click Geometry > Collapse Geom to close them.

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11

Suggested Tools and Strategies for Cleaning Up Imported Geometry

The following techniques may be useful when you are working with a small

percentage of data containing geometry that cannot be repaired.

• Use the analysis tools provided to investigate any problem geometry:

o To highlight problems with surface parameterization, mesh surfaces. If the

U and V mesh lines are almost parallel on the surface, a near singularity is

created, that is, incorrect parameterization.

o To obtain information on appropriate settings for the MaxGapDist value,

measure the distance between surface edges or vertices.

• If Geom Check information is not available for a particular problem, isolate the

problem area by manually fixing edges one at a time. With remaining problem

edges, use the preceding techniques.

• If you have surfaces that overlap in a portion of their area, but need to keep both

in the model, use Edit Boundary to create a common edge.

• If you cannot repair a boundary or vertex using Fix Bndries, remove one of the

surfaces along the edge, and create replacement surfaces using Pro/ENGINEER

features. Merge the new surface with the imported geometry. Identify the surface

to remove by investigating the edges along the problem boundary using analysis

tools. You may want to remove surfaces that have the worst discontinuities along

the edge or are easiest to recreate.

• If you cannot import a particular surface, recreate the missing surface based on

boundary edges from adjacent surfaces as discussed above.

• Surface and Merge merge individual quilts, but you cannot merge internal

edges of a quilt. That is, you cannot merge a surface quilt with itself. However,

yellow edges that remain in the model even after Join Surfs has been used are

probably internal to the quilt, and cannot be merged using Surface and Merge.

Guidelines for Manual Surface Cleanup

If the result of your automatic cleanup is not satisfactory, follow these guidelines to

perform a manual cleanup:

• View all diagnostic information.

• Address overlapping geometry and coincident surfaces.

• Exclude surfaces as necessary.

• Save frequently. Changes are not parametric.

Combination of Data Types

There are several common combinations of imported data. A file can contain 2D and

3D information, in drawing and model space. You can read these files into

Pro/ENGINEER either as drawings or as parts or assemblies, or both.


12

Another typical combination is that of wireframe and surface data in one part. The

basic part is usually created with wireframe entities, and surfaces are created only

where there are rounds or other interesting geometry. The strategies already

explained for working with wireframe and surface data can be applied to the

combinations of imported data as well.

Tip: Working with Edit Boundary Functionality

When editing boundaries,

• Save the part often because you cannot undo changes after you exit the EDIT

BNDRY menu.

• You cannot create or modify edges to be off the surface. All new edges that are

created and old edges that are modified are always projected on to the surface. If

necessary, exclude the incorrect imported surfaces and blank them on a layer.

Recreate new surfaces and merge them into the imported quilt.

• Use Query Select to pick the appropriate entities. For example, when moving or

creating vertices, use Query Select to pick the ends of edges. You can then

connect ends of new and existing edges.

• When possible, use Modify on the EDIT BNDRY menu to change the existing

edges rather than create new edges. It is easier to maintain closed loops and

vertex alignment when you adjust existing boundaries, for example, by moving

vertices.

• In many cases, it is more important to align vertices than to align the edges

between them.

• Domain meshes can be helpful in viewing surfaces that need to be edited.

To Automatically Clean Up the Surface




3. Click Geometry > Heal Geometry > Automatic. The SEL SRFS menu appears.

4. To select the surfaces you want to include or exclude, or both, for cleanup, click

Include and select one of the following:

o Indiv Surfs

o Surf & Ngh

o All Surfs

o Quilt Surfs

5. Click Exclude.

6. Select the surfaces from the SELECT menu.

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13

7. Click Done. The Automatic Surface Cleanup dialog box appears.

8. Modify the wireframe:

o Click Exclude. Select the surfaces, curves, or vertices, or a combination of

wireframe entities, for which you do not want to change the parametrics.

o Click Include. Select the edge chains (not already selected) for which you

want to perform the surface cleanup.

o Click Suspend. Select the edge chains that you want to suspend from the

wireframe.

9. Modify the constraints on the wireframe:

o Select a constraint type.

o Click Set or Unset. The SELECT menu opens.

o Select an edge, curve, or surface on which to enforce a constraint.

o To revert to default constraints, click Set Defaults.

Note: Some of the selected geometry is automatically constrained and is

appropriately tagged in the model window.

10. Change the way the surface appears in the model window. Check the display

options that you want on the constrained wireframe.

11. Click Compute to start the automatic repair of the quilt or Quit to exit the

Automatic Surface Cleanup dialog box.

12. Compare the original surface with the newly-computed surface as follows:

o Click Analysis > Geometry > Shaded Curvature. The Shaded

Curvature dialog box opens.

o Click the Definition tab under Plot and select Compare Surfaces in

Type.

o Click All, Surface, or Component in the filter on the dashboard and click

on the geometry to view the comparison color chart.

13. Click Accept to complete the operation or click Quit.

To Display Deviation Surface Analysis

1. Click Analysis > Geometry > Shaded Curvature. The Shaded Curvature

dialog box opens.

2. Click the Definition tab.

3. Under Plot, select Compare Surfaces as the plot-type in Type.

Note: Compare Surfaces is available only when the Automatic Surface

Cleanup dialog box is open and you click Compute to start the automatic repair

of the quilt.


14

4. Under References select Surface for deviation analysis.

5. Select a surface in the model.

Note: When you select a surface in the model, Color Scale window opens for

the analysis of the selected surface.

6. Click the Analysis tab in the Shaded Curvature dialog box. The minimum and

maximum deviation for the surface is available under Results.

7. To display the deviation analysis for all surfaces, click Component in the filter on

the dashboard.

Using the Automatic Surface Cleanup Dialog Box

Click: To:

Modify Wireframe > Include >

Edge chain

Select edge chains to include in

computation

Modify Wireframe > Exclude >

Surface

Select surfaces to exclude from

computation


Curve

Select curves to exclude from

computation


Vertex

Select vertices to exclude from

computation

Modify Wireframe > Suspend >

Edge chain

Select edge chains to identify

topology to suspend from the

computation

Modify Constraints > Set or Unset

> Frozen

Select surfaces to freeze or not

freeze


> Frozen w/boundary

Select surfaces with boundaries

to freeze or not freeze


> Tangent

Select edge to set or unset

tangency


> Master

Select the tangent edge for

which to set or unset the master

side or select a surface to set as

the master for tangent edge


> Split

Select a surface to split or join or

select points along the boundary

where you want to split or join

the surface

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15

Modify Constraints > Set Defaults Set default constraints

Display Options > Frozen Display all frozen surfaces and

frozen surfaces with boundaries

with appropriate meshing and

tags

Display Options > Master Have hashings on all appropriate

edges with master constraint on

the side of the master surface

Display Options > Tags Display all tags

Display Options > Fixed Srfs Mesh all modified surfaces in red

Compute Compute the surfaces

Quit Quit automatic surface cleanup

Accept Accept the solution. Accept is

available after the wireframe and

the surfaces are rebuilt.

Modifying Constraints Color Conventions

Constraints such as tangency are applied automatically. These constraints appear in

color with a letter tag. You can also add your own constraints. The entities on which

constraints are specified are highlighted in the color and with the tag described in the

table below. Some surfaces cannot be changed. These appear with a dark cyan mesh

and a green F tag indicating that they are frozen.

Constraint Color/Tag

Frozen Dark cyan mesh with green F tag in a green box

Frozen

w/boundary

Grey dense mesh with a white B tag in white box

Master Hashings on the edge selected on the side of the

master surface

Tangent Cyan edge with a cyan T tag on the edge

Split Cyan dotted line indicating a split with a T tag

indicating that the split creates a tangent edge


16

To Collapse the Geometry

Use Collapse Geometry to fill the holes that result from deleting surface patches

that cannot be repaired in the imported quilt. The Collapse Geometry menu is

available only after you create Pro/ENGINEER features with the imported feature.

1. Click Geometry > Heal Geometry > Automatic or Manual to clean up the

quilt.

2. Create a parametric Pro/ENGINEER feature to fill the holes in the quilt.

3. Click Geometry > Collapse Geometry. The SELECT FEAT menu appears.

4. Click Select to select the features that you want as part of the imported quilt. If

the feature has a child feature, the Child menu appears.

5. If the feature has child features, use the Child menu to determine how the child

features in the collapsed feature are to be handled.

SELECT FEAT Menu

When you select Geometry > Collapse Geometry, the SELECT FEAT menu

appears.

Click: To:

Select Select the features that are to become part of

the imported feature. If the features have child

features, the Child menu appears

Layer See the Child menu, if features have child

features

Range See the Child menu, if features have child

features

Done Start the collapse and regenerate the model

Quit Ignore selections and return to the REDEF

IMPT menu

Child Menu

When a feature has child features, the Child menu appears.

Click: To:

Show Ref Display the references of the highlighted feature

Include Collapse the highlighted feature with other selected

features

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17

Include

All

Collapse all dependent features

Suspend Suspend the highlighted feature and deal with it if it fails

during regeneration

Info

Provide information on the highlighted features

Quit Quit and return to the SELECT FEAT menu

Tip: Merging Pro/ENGINEER Features

Do not merge Pro/ENGINEER features created with imported geometry. These

features merge automatically when you collapse the geometry.

19

Index

A

attributes

redefining imported...................... 1

attributes ...................................... 1

Attributes command

REDEF IMPT menu ..................... 18

Attributes command.................... 1, 2

Auto Select

SEL CHAINS menu ....................... 5

Auto Select .................................... 5

B

boundary

editing when redefining ................ 7

boundary....................................... 7

C

COLLAPSE GEOMETRY command .... 17

color conventions

for constraints during import ....... 17

color conventions ......................... 17

constraints

automatically applied ................. 17

Frozen...................................... 17

Frozen w/boundary .................... 17

Master...................................... 17

Split......................................... 17

Tangent.................................... 17

constraints .................................. 17

E

edges

creating a chain........................... 8

modifying a chain ........................ 8

edges ........................................... 8

Edit Definition command

Properties menu................... 1, 2, 3

Edit Definition command .......... 1, 2, 3

entities

deleting from an

imported surface ...................... 2

entities ......................................... 2

F

feature

joining surfaces in

an imported feature .................. 2

feature ......................................... 2

FixQuiltBndry command

FIXQULTBNDRY menu .................. 6

FixQuiltBndry command .................. 6

G

gaps

closing when redefining import...... 3

gaps............................................. 3

geometry

see imported geometry ...............10

geometry .....................................10

H

Heal Geometry command ................ 2

I

imported feature

creating chain of edges when

redefining................................ 8


20

editing a boundary

when redefining ........................ 7

fixing quilt vertices

when redefining ........................ 9

joining surfaces ........................... 2

modifying a chain of edges when

redefining ................................ 8

redefining attributes..................... 1

redefining by closing gaps and

fixing tangency ......................... 3

redefining by deleting entities........ 2

redefining by excluding surfaces

from a quilt .............................. 3

redefining by fixing boundaries ...... 4

redefining by joining surfaces ........ 2

redefining quilt boundaries............ 6

imported

feature .............1, 2, 3, 4, 6, 7, 8, 9

imported geometry

automatic clean up overview ....... 10

automatically redefining

imported features ................... 14

cleaning up imported geometry

overview................................ 10

collapsing after importing

a feature................................ 17

collapsing geometry overview...... 10

combinations of data types ......... 13

guidelines for manual surface

cleanup.................................. 13

manual clean up overview........... 10

manually redefining imported

features................................. 11

selecting feature for collapsing

overview................................ 10

strategies for cleaning up ............12

imported

geometry ...... 10, 11, 12, 13, 14, 17

J

Join Surfs command

Properties menu.......................1, 2

Join Surfs command ....................1, 2

M

Make Solid command

Properties menu.......................1, 2

Make Solid command...................1, 2

Q

quilt boundaries

fixing when redefining import........ 6

quilt boundaries ............................. 6

quilt vertices

fixing when redefining import........ 9

quilt vertices ................................. 9

S

surface cleanup.............................14

surfaces

excluding from quilt when

redefining import...................... 3

fixing boundaries......................... 4

joining in an imported feature ....... 2

redefining import by excluding from

quilt........................................ 3

surfaces................................. 2, 3, 4

T

tangency fixing when

redefining import......................... 3

tangency....................................... 3

Index

21

U

Unsel Chain command

FIXQULTBNDRY menu .................. 6

Unsel Chain command .................6, 9

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