TheoConTour user Manual
Contents
1. THEOCONTOUR USER MANUAL Page 2 Intentionally left blank Copyright Latimer CAD Limited 2004 2 Big TheoContour User Guide INSTALLATION AUTHORISING BASIC CONCEPTS THEOCONTOUR TOOLBAR SELECTING DATA TO CONTOUR CONTOURING SETTINGS SPEED amp ACCURACY Copyright Latimer CAD Limited 2008 CONTENTS _ O On or ANNOTATE INDEX CONTOURS EDITING CONTOUR LINES PLOTTING PROFILES SURFACING SURFACE TYPE amp SHADING OPTIONS REFERENCE SECTION MENU STRUCTURE Page 3 TheoContour User Guide INSTALLATION TheoContour is distributed as part of the TheoLt product range The entire range Is installed from a single setup during which the various modules may be selected TheoLt is distributed in 2 formats e CD e Web Download TheoLt R6 2 2 DistToPlan Setup Select Features Select the features setup will install When using the CD selecting Install TheoLt from the list of options starts the same installation process as the web download Select the features you want to install and deselect the features you do not want to install Description 9 Example Files a Instrument Interfaces AutoCAD Blocks oom Settings Files re gi Intelicad files gg Authorisation Components of TheoLt Building Survey for AutoCAD LT2000 fg TheoLt Building Survey for AutoCAD Liza gt This compo2. Collate Data der Create Contours add Point w Annotate contours Create Surface Create Surface Surface colour by Layer a Axis Profile Axis Profile Surface colour by Height 2 Point Profile 2 Point Profile Surface colour by Slope Path Profile Path Profile Surface colour by Layer Ap x Axis Profile Surface colour by Height 2 Point Profile Surface colour by Slope SP Path Profile Regular Surface Options Options License Manager License Manager Theo Contour Help Theo Contour Help Fa Options Theo Contour Help Copyright Latimer CAD Limited 2008 Page 33 TheoContour User Guide Page 34 Copyright Latimer CAD Limited 2008
3. e Axis Layer The Profile Layer contains the outline of the profile The Axis layer contains the Axis and Axis labels Enter the name of the layer to be used for each Item type If the layer does not exist in the drawing file it will be created Page 16 Copyright Latimer CAD Limited 2008 CEMB TheoContour User Guide Profile Between 2 Points Select the 2 Point Profile Icon The command prompts for the start and the end points for the profile section command theoProfile Pick start of section line pick 1 Pick start of section line pick 2 Once the endpoints are selected position the plot on the correct position Place the plot pick 3 Location for the plot The length and the height of the plot may be scaled to exaggerate the profile if required Enter Scale for Length of Plot 5 Enter Scale for Height of Plot 5 Resultant Plot Copyright Latimer CAD Limited 2008 Page 17 TheoContour User Guide Profile Along a Path Ta Select the Path Profile Icon The command prompts for the an entity to guide the profile section Command THEOPROFILEPATH Select the Entity to Profile along The entity may be a polyline or splined polyline or a straight line The Z value height of the entity is not important only the plan position is required As for the 2 Point Profile place the plot Place the plot pick Location for
4. Function Creates multiple profiles through the model This commands creates multiple profiles through the model parallel to the X axis of the current UCS Rotate the UCS about the Z axis to orientate the Profiles in the required direction The interval of the sections is controlled by the Contour Interval setting In Options Lines There are no command Line options for this command Example Command Command theoXProfile Command Copyright Latimer CAD Limited 2008 Page 31 TheoContour User Guide TheoProfilePath Function To plot the profile through the model along a path When prompted select the path for the profile The path may be any Polyline curved or straight or line The Z value height of the entity is not important only the plan position Is required The next prompt ts for the location of the plot The plot may be scaled in length and height For Example Command THEOPROFILEPATH Select the Entity to Profile along Place the plot Enter Scale for Length of Plot 5 Enter Scale for Height of Plot 5 Page 32 Copyright Latimer CAD Limited 2008 ZPD TheoContour User Guide Menu Structure AutoCAD 2000 AutoCAD 2004 06 AutoCAD 2007 on TheoLk Contour Help TheoLt Contour Help TheoLt Contour Clear Data Clear Data Clear Data Readsettings ReadSettings ReadSettings Read nodes Collate Data Collate Data Create Contours Create Contours 4dd Point 4dd Point Write nodes
5. Guide EDITING CONTOUR LINES Standard AutoCAD commands will allow the user to finesse contour fitting If Polyline is chosen as the contour type the lines can be smoothed joined and trimmed as required uSing Ployline edit Breaklines can be incorporated into the contour model by assigning the correct layer in TheoContour options Note that contours use the endpoints of lines inthe breakline layeras extra points rather than cutlines Adding points to the enpoints of these lines will cause duplicate point errors Copyright Latimer CAD Limited 2008 Page 15 TheoContour User Guide PLOTTING PROFILES je Profiles are section lines taken through the model also known as cross sections The profile is drawn on the current UCS within a labelled axis p Each item making up this profile plot is drawn on it s own layer Contour Lines A Text N Break Lines kl Controls XN Outout Lavers Suface Layer Bufo SSCS The profile is created by stepping through the model between 2 points or Paofiestayer Surface Pofies SSS along a path entity The plot uses the contour interval setting to control the protie tayer Piera distance between points on the profile The profile plot is created using the linetype specified in the Controls tab Axis Layer Plot Axis L a y ers Load Save As Cancel Select the Options Icon Select the Output Layers Tab 2 Layers are used for Profile Plots e Profile Layer
6. col lect the minimum number of points to describe the surface only collecting a higher density of points in areas that require it Therefore it is important to understand how the data will be used at the time of collection Profiles and Sections 3 Commands are included for section analysis e TheoProfile single profile between 2 points e TheoXProfile multiple profiles through the surface e TheoPlotProfilePath single profile along a path Please see the reference section for full details Page 6 Copyright Latimer CAD Limited 2008 ERD TheoContour User Guide THEOCONTOUR TOOLBAR TheoContour Is installed with both a toolbar and a pull down menu theocontour007 09 cui which when added to the AutoCAD main cui is availble as part of the main AutoCAD menu The toolbar buttons operate the functions from left to right below 1 2 3 4 o 6 8 9 1 Collate points Addpoint real time capture Clear points from model Create contours Create surface X Axis profile 2 point profile Path profile Annoate Index contours 0 Settings Copyright Latimer CAD Limited 2008 TheoLt Contour x RUN AOC er E 4 TheoLt Contour Clear Data ReadSettings Read nodes write nodes Collate Data eof Create Contours A Add Point se Annotate contours Create Surface Surface colour by Layer Ap x Axis Profile Surface colour by Height Ar 2 Point Profile Surface colour
7. command requires the data to be already selected collated Use TheoCollate before this command Selecting this command processes the collated data according to the cur rent settings see TheoOptions Layers A surface is created in the form of multiple AutoCAD 3D face entities on the selected output layer The TheoCollate command report includes the number of surfaces created in the surface mesh A 3D face entity will be created for each one of these surfaces If the surface count is large the time taken to render the surface might be quite long In this case a good method is to set AutoCAD to display the drawing In a wireframe mode Create the surface Save the drawing and then set the display to rendered Command Example Command theosurf Creating Surface Copyright Latimer CAD Limited 2008 Banas 06 TheoContour User Guide TheoProfile Function To plot the profile through the model between 2 points Starting the command prompts for 2 points these are either end of the profile to be plotted The next prompt ts for the location of the plot The plot may be scaled in length and height For Example Command theoProfile Pick start of section line pick 1 Pick start of section line pick 2 Place the plot pick 3 Location for the plot Enter Scale for Length of Plot 5 Enter Scale for Height of Plot 5 Page 30 Copyright Latimer CAD Limited 2008 EAB TheoContour User Guide TheoXProfile
8. AB TheoContour User Guide TheoOptions Breakline Layer Affects commands TheoCollate Function To control the alignment of the surface mesh Forces the mesh to be coincident with entities such as lines and polylines drawn on this layer TheoOptions Text Layer Affects commands TheoContour Enter the name of the layer to be used for text annotation of the Index lines If the layer does not exist in the draw ing file it will be created Text Height Affects commands TheoContour The text Is drawn at the specified character height Text Spacing Affects commands TheoContour The text is placed along the Contour Index lines at the specified interval this is the minimum spacing depending on the sample rates and the data set the text may be spaced further apart Draw Text Affects commands TheoContour The drawing of text may be disabled Copyright Latirner CAD Limited 2008 Bate 25 TheoContour User Guide TheoOptions Output Layers Surface Layer Affects commands TheoSurf Contains the output of the TheoSurf Command Profiles Layer Affects commands TheoXProfile Contains the output of the TheoXProfile Command Profile Layer Affects commands TheoProfile TheoProfilePath Contains the profile line drawn within the axis box for the TheoProfile amp TheoProfilePath commands Axis Layer Affects commands TheoProfile TheoProfilePath Contains the axis lines and text drawn around the p
9. Ju H InstallShield Installation Informatil Network Authorisation Server Specify the folders in which AutoCAD should Browse for Folder 0 m Customize Options gt Menus Toolbars Keyboard E Menu Customization Tool Palettes Menu Groups ACAD File Name sve32 Survey32 Distrb theocontour2004 MNS C Replace All Edit Custom Files gt Copyright Latimer CAD Limited 2008 Pi TheoContour User Guide The THEOLT menugroup should now be listed 5 Menu Customization eeh Menu Groups Menu Bar Select the Menu Bar tab Select THEOLT from the Menu Group list box Menu Group Select TheoLt Contour menu from the menus list Menu Bar Select Help in the list on the Menu Bar list Click Insert TheoltContou E Inset gt gt Close the dialog box lt lt lt lt Remove lt lt Bemove Dimension The menu should be displayed Additionally check the Window command line loading the menu automatically loads the lt lt Remove All TheoContour application For Example Command menuload Menu loaded successfully MENUGROUP THEOLT Command Initializing VBA System TheoContour base license avail able Command CAD Copyright Latimer CAD Limited 2008 Page 3 TheoContour User Guide AUTHORISATION Once installed start AutoCAD The installation process sh
10. any individual line entities Page 12 TheoContour User Guide The resultant contours are placed correctly in plan and at the correct Z F value forming a 3D model CAS Copyright Latimer CAD Limited 2008 Page 13 TheoContour User Guide ANNOATE INDEX CONTOURS The TheoContour version for AutoCAD 2007 has a tool for placing Index contour annotation directly onto the contour model along a user chosen profile The profile should be picked from low to high to control the orienta tion of the text i e the text will be facing up slope if the line is sected from bottom to top The text will be aligned at right angles to the index contour line The settings for the command are found in options and care must be taken Em to assure the correct layers are used the layers for both the index contour S M and the text must be set in options A current set of option settings needs to Es be set for TheoContour to find the layers the setings are read by using ok to quit the options panel the prompt to re contour can be declined 3 Select the comand Annotate index contours and pick the text path line as R A W prompted at the command line Rua eai Command theoAnnotateIndexs Pick start of section line Pick end of section line Note that the Draw Text checkbox in options should be unchecked to action this command N Page 14 Copyright Latimer CAD Limited 2008 ERD TheoContour User
11. by Slope SP Path Profile Regular Surface Options Theo Contour Help Page TheoContour User Guide SELECTING DATA TO CONTOUR Select the Collate icon Se TheoContour will display the current settings on the command line For Example Command theoCollate TheoContour clean up complete TheoContour clean up complete Settings Contour Output Layer Contours Index Output Layer Contour Idx Text Output Layer Contour Text Contour Output Interval 0 5000 Index Output Interval 0 1000 TheoContour clean up complete After the settings TheoContour will prompt for points to include in the contour model Select points to include in the contour model Any standard AutoCAD selection method may be used window selection crossing box or individual picking In this case the option ALL has been used to select all of the entities in the drawing TheoContour will ignore all entities except point entities Select objects all 1198 found Select objects enter TheoContour processes the points to produce a surface Once the processing is completed the boundary sizes of the data set is displayed Building Surface Checking Surface Min point 152 2588 122 3373 31 0148 Max point 169 6151 140 4459 32 8346 Processed 1198 points Boundary Contains 4 points Created 2390 surfaces Allocated 165942098 bytes Check that the boundary size of the data set is as expected particularly the maximum and minimum Z va
12. erval and Index Interval settings but the Sample Rate has been altered tot t s x mel dee g lt LA Select the Options Icon Select the Controls Tab Sample Rate E RUM Gwe A Sub Sample Rate US MMM i WY Use the Sample rate slider to adjust how TheoContour samples the data The sampling rate increases to the RIGHT of the slider The sample rate determines how closely the contours follow the TIN surface of the points The Sub sample setting steps across the model in smaller steps creating finer contour lines and taking more processing time Copyright Latimer CAD Limited 2008 Page 11 TheoContour User Guide A further affect on the speed and the accuracy of the results Is the type of line used to draw the contour lines The images on the right show contours generated on the same model with differing line types Select the Options Icon Select the Controls Tab Contour lines can be generated in 3 linetypes e Straight Lines e Straight Polylines e Splined Polylines It should be clear from images right from top straight lines straight poly lines and smooth polylines that the smoothness of the splined polyline gives a nice smooth looking contour line The visual difference between creating straight polylines and straight lines are very small However contour lines formed from polylines are one continuous line whereas contour lines formed from straight lines consist of m
13. gle polyline with the spline option set Sample Rate Affects commands TheoContour To create contours TheoContour samples the height of the surface at intervals Controlling the sample rate of these intervals controls the speed and the detail of the contour lines See Speed and Accuracy for further detail Sub Sample Rate Affects commands TheoContour To create contours TheoContour samples the height of the surface at intervals Controlling the sample rate of these intervals controls the speed and the detail of the contour lines See Speed and Accuracy for further detail Local UCS Affects commands TheoCollate Usually the points collected for contouring are world coordinates There may be occasions that TheoContour is used for surfacing points collected for other means i e Buildings The surfacing tool within TheoContour is not a 3D tool but a 2D tool Setting this switch before collation and surfacing contouring enables TheoContour to work in any orientation within a model Copyright Latimer CAD Limited 2008 EFib TheoContour User Guide Duplicate Point Check Affects commands TheoCollate A duplicate point is considered to be a point that lies in an X Y location that is occupied by another point The points may be at different heights Duplicate points within a data set can cause problems for the surfacing collation tool Enabling this option ensures that any duplicate points are ig
14. he data or this process Note Selecting avery large number of points greater than 100 000 may require a few minutes processing time to build the triangulated mesh Creating Contours The options for controlling the output of the contours are set using the command TheoOptions The primary controls for Contours include e The Interval e The Interval of the index Contour e The Output layers Additionally there are options to control the accuracy of the contours The accuracy settings have a large impact on the amount of time taken to process the data A good working method is to set the accuracy to Coarse Check the output settings intervals before moving the accuracy towards fine until the desired result is achieved The contours are created by the command TheoContour Copyright Latimer CAD Limited 2008 pes TheoContour User Guide Creating a Surface The triangulated mesh surface used to create the contours may also be converted to a surface consisting of AutoCAD 3D faces using the command TheoSurf This allows further analysis of the topographical features and or rendering Further analysis is available within AutoCAD 2004 and later with the surface being coloured accord ing to height or gradient Note he mesh and therefore surface Is highly dependant on the number of points collected The greater the number of points the better the mesh smaller triangles However the aim of using real time contouring is to
15. lues j Page 8 Copyright Latimer CAD Limited 2008 ER TheoContour User Guide CONTOURING SETTINGS Layers When created the contours are drawn on pre set layers and a pre set interval Select the Options Icon Select the Contour Lines Tab 2 Layers are used for Contour Lines e Basic Contour Lines e Index Contour Lines Enter the name of the layer to be used for the Contour lines If the layer does not exist in the drawing file it will be created The height Z value of the contour Index lines may be annotated along the Index line This text is placed on a separate layer Select the Text Tab Enter the name of the layer to be used for the Text If the layer does not exist in the drawing file it will be created EPD Copyright Latimer CAD Limited 2008 g theoContour Settings Contour Lines Text N Break Lines Controls N Output Layers Layer Contours fe Index Layer Contour Idy Interval jo Index Interval 0 5 Save As Cancel OK theoContour Settings Contour Lines Text E Break Lines Controls N Output Layers Layer Contour T ext Text Height Text Spacing IV Draw Text Load Save s Page 9 TheoContour User Guide Intervals Select the Contour Lines Tab Interval specifies the interval for the basic contour lines 1 e for a data set that ranges between the heights of 10M and 12M setting the Interval to 0 5 will create q cont
16. nent contains the TheoContour application executable help and sample files The name of the web installation file is TheoLt32 exe To start this installation double click the TheoLt32 exe file Follow the instruction indicated on the screen 138 82 MB of space required on the C drive 2425 76 MB of space available on the C drive For complete installation of TheoContour only select the custom installation po option when prompted The following components are required to complete the TheoContour installation If only TheoContour is required all other components may be ignored e Program Files e TheoContour e Settings Files lt Back Cancel Note All examples in this manual unless specified otherwise use the file contour pointsbypoints 2000 dwg which is installed in the application folder Copyright Latimer CAD Limited 2008 Fager Once installed start AutoCAD From the Tools Menu Select Options Click the to expand the Support File Search Path Click the Add button An empty path will be added to the end of the Support File Search Path list Click the Browse Button Use the explorer to find the installation location of TheoContour usually c Program Files Latimer_CAD TheoLt or TheoLt R Click OK Click OK to close the Options dialog box From the AutoCAD Tools menu Select Customize Interface or Menus Customize Menus Select the Menu Groups tab Click Browse From the i
17. nored If the output of the TheoContour command appears corrupt this Is usually an indication of a bad surface which may have been caused by duplicate points Duplicate point errors are apparent as defects in the contoured Ee surface TheoContour will attempt to map a recursive surface state when surface facets are bounded more than once Copyright Latimer CAD Limited 2008 Page 23 TheoContour User Guide TheoOptions Contour Lines Layer Affects commands TheoContour Enter the name of the layer to be used for the Basic Contour lines If the layer does not exist in the drawing file It will be created Index Layer Affects commands TheoContour Enter the name of the layer to be used for the Index Contour lines If the layer does not exist in the drawing file it will be created Interval Affects commands TheoContour Specifies the interval for the basic contour lines 1 e for a surface that ranges between the heights of 10M and 12M setting the interval to 0 5 will create contour lines at heights of 10 10 5 11 11 5 and 12 Index Interval Affects commands TheoContour Specifies the interval for the basic contour lines 1 e for a surface that ranges between the heights of 10M and 12M setting the Index interval to 2 will create contour lines at heights of 10 5 11 11 5 and Index Lines at 10 and 12 Usually the Index Interval is a multiple of the Interval Page 24 Copyright Latimer CAD Limited 2008 E
18. nstall folder as selected above select the file For AutoCAD 2007 theocontour2007 9 CUI For AutoCAD 2004 to 2006 theocontour2004 MNS For AutoCAD 2002 etc theocont MNS Click Load to load the menu file Page 2 TheoContour User Guide Current profile lt lt Unnamed Profile gt gt Current drawing Files Display Open and Save Plotting System User Preferences Drafting Selection Profiles contourpoi ypoints dwg Search paths file names and file locations 5 A Support File Search Path w E Working Support File Search Path E B Device Driver File Search Path E B Project Files Search Path E p Menu Help and Miscellaneous File Names E D Text Editor Dictionary and Font File Names 4 m gt C Documents and Settings mlatimerApplication DatasAutodesk AutoCAD Z gt C Documents and Settings mlatimer Local SettingstApplication Datat amp utod C Program FilessAutoCAD 2004 support C Program FilessAutoCAD 2004 fonts C Program FilestAutoCAD 2004 help gt C Program Files AutoCAD 2004 express C Program Files AutoCAD 2004 color Serverhiobs msve32 S urveys2stheol theoContour2004 Release insert linetypes and hatch patterns that are n H Internet Explorer ED Java H Java Web Start E KnoWare 5 Latimer CAD CADSTAR IDF INTERFACE CADSTAR INTERFACE FOR H Inventor IDF Interface Ri ListPro3
19. ontour User Guide TheoContour Function To create contour lines index lines and contour height annotations Note This command requires the data to be already selected collated Use TheoCollate before this command Selecting this command processes the collated data according to the current settings see TheoOptions Ensure that the options are set correctly before Issuing this command The time taken to process the data is wholly dependant on the area covered by the data In relation to the contour interval i e processing Ikm sq with an interval of 1M will be faster than processing the same 1km with a contour interval of 0 2M In addition reducing the accuracy of the contours see TheoOptions Controls will have a huge effect on the time taken After calculating the new contours any entities currently existing on the layers selected for the contour output will be erased If a large contour line set exists on these layers this step may take a little while Note If you wish to keep multiple contour sets each set must reside on a new layer Use the heoOptions com mand to select the output layers otherwise use the AutoCAD Layers command to rename layers Example Command theocontour Calculating Contours Erasing Existing Contours Drawing Contours Done Page 98 Copyright Latimer CAD Limited 2008 CEMB TheoContour User Guide TheoSurf Function To create a visible surface from the collated data Note This
20. ould have added the TheoContour Menu to the loaded menus at start up If this is not the case see Loading the TheoContour Menu From the TheoContour pull down menu select Licence Manage ment Latimer CAD Authorisations 1 5 System ID AC8 784 A5D 549 E Add de THEOLT CONTOUR MODULE 2020 08 04 0 v THEOLT CONTOUR MODULE 2020 08 04 O THEOLT RE PRO 2020 11 50 O Close The Authorisations dialog box will be displayed Make a note of the System ID Complete the Authorisation Request document enclosed and either e Fax to 01403 272179 or e Email to auths dlatimer cad com Once the Authorisation code is supplied click Add This will display a dialog box in which the Authorisation should be entered Press Ok to complete Pagos Copyright Latimer CAD Limited 2008 CEMB TheoContour User Guide BASIC CONCEPTS The process of creating contours Is divided Into two main actions e Selecting the Data e Creating the Contours and or Surface Selecting the Data TheoContour acts upon AutoCAD point entities Note When running TheoLT real time contouring points are automatically added to a single layer and collated The command TheoCollate enables the data to be selected using standard AutoCAD selection techniques Once the data points are selected the TheoCollate command builds a triangulated surface mesh from the points There are no settings that affect the selection of t
21. our lines at heights of 10 10 5 11 11 5 and 12 Contour Lines Tet BreakLines Controls Output Layers TextHeight 01 Index Interval specifies the interval for the index contour lines i e for a surface asas E that ranges between the heights of 10M and 12M setting the Interval to 0 5 and the Index Interval to 2 will create contour lines at heights of 10 5 11 11 5 Index Lines at 10 and 12 Usually the Index Interval is a multiple of the Interval Index Interval M Draw Text Load Save As Cancel OK ok Index Text Spacing Select the Text Tab The text is placed along the Contour Index lines at the specified interval this is the minimum spacing depending on the sample rates and the data set the text may be spaced further apart Note Uncheck the Draw text option if you want to place text using the annotate Index conontours tool after contour generation TheoContour now has enough data Ok to close the options dialog box Select the TheoContour Icon The contours will be created according to the settings Page 16 Copyright Latimer CAD Limited 2008 ER TheoContour User Guide SPEED AND ACCURACY E The images on the right show contours generated on the same model with differing settings Image 12 amp 3fright Top Sample and Sub sample at defaults Centre Sample at default sub sample rate raised Bottom Sample and Sub sample rates raised E a All have identical Int
22. rofile for the TheoProfile amp TheoProfilePath commands Page 26 Copyright Latimer CAD Limited 2008 ZPD TheoContour User Guide TheoCollate Function For selecting the AutoCAD points to be used Use the standard AutoCAD selection tools to select the point entities to be used for contour data All other entities are ignored The collated data is stored internally the drawing display in AutoCAD is unaltered i e The created mesh is not visible To create a viewable mesh use the TheoSurf command afterwards Notice that the command reports the extents of the surface model A good working practice would include the checking of these extents prior to contouring or surfacing Check that the height range is as expected to help filter out invalid points For Example Command theocollate TheoContour clean up complete Settings Contour Output Layer Contours2004 Index Output Layer Contour Idx2004 Text Output Layer Contour Text2004 Contour Output Interval 0 1000 Index Output Interval 0 5000 TheoContour clean up complete Select points to include in the contour model Select objects all lt enter gt 7505 found 6233 were filtered out Select objects Building Surface Checking Surface Min point 400938 3464 328451 8876 110 9602 Max point 401167 3585 328555 3847 128 3426 Processed 11459 points Boundary Contains 4 points Created 22912 surfaces Copyright Latimer CAD Limited 2008 Page 27 TheoC
23. the drawing in a wireframe mode Create the surface Save the drawing and then set the display to rendered Note The example file used in this booklet uses the minimum number of points possible to capture the contour model Therefore whilst the contour model is a very good match to the real terrain the surface model when used for rendering is In fact very poor Page 20 Copyright Latimer CAD Limited 2008 EAB TheoContour User Guide SURFACE TYPES AND SHADING OPTIONS There are 6 options based on the 3 shading methods slope height or layer applied to either a regular or irregular TIN If a regular TIN is selected shad ing options are prompted atfer setting the vertex interval in the command line The irregular TIN is generated on selection of the shade type from the pull down menu Regular Surface Coloured by height Iso View Flat shading Irregular tin surface Coloured by Slope Iso View Flat shading Regular Surface Coloured by slope Iso View Flat shading Erib Copyright Latimer CAD Limited 2008 Page 21 Page 22 TheoContour User Guide REFERENCE SECTION TheoOptions Controls P LineType Affects commands TheoContour TheoProfile TheoPathProfile The contour lines may be drawn as either e Straight Lines each contour line is made of many single straight line segments e Straight Polylines each contour line is a single polyline e Splined Polylines each contour line is a sin
24. the plot The length and the height of the plot may be scaled to exaggerate the profile if required Enter Scale for Length of Plot 5 Enter Scale for Height of Plot 5 Resultant Plot Page 18 Copyright Latimer CAD Limited 2008 EAB TheoContour User Guide X Axis Profile Select the X Axis Profile Icon The command will generate a set of vertical profiles across the collated area at the current interval paralell to the X axis of the WCS The points will need to be col lated before the profiles are created A default layer surface pro files IS created the layer can be set in options in the output layers tab Command theoXProfile Right The resultant plot Copyright Latimer CAD Limited 2008 Paget TheoContour User Guide SURFACING E E For calculating the Contour and Profile lines TheoContour creates a surface mesh from the point data This mesh will be converted to AutoCAD 3D faces for rendering and analysis The resultant set of faces Is created on a pre set layer Layers Select the Options Icon Select the Output Layers Tab The Surface Layer contains the resultant 3D face entities Creating the Surface Select the Create Surface Icon The 3D Faces are created Command theosurf Creating Surface Note If the surface count is large the time taken to render the surface might be quite long In this case a good method is to set AutoCAD to display
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