COMPUTER AIDED ARCHITECTURAL DESIGN
Workshop 6 Notes, Week of October 12, 2009

SURFACE EDITING AND DRAWING EXTRACTION MANAGER

Surface and View Extractions

Surface Modeling Toolset
- Planar Surface by Points - with UV 10 and 10 (A0)
- Grab handles, elevate points to make wavy surface
- change color -> Draw Polygon shape on top of
- change color -> Draw Circle on top of
- change color -> Draw bSpline surface on top of
- grab all three and Move them (F CP) to hover above the surface.

- Grab whole set - make a Copy to the side
- Zoom to first surface

- Trim Surfaces by Curves tool (S2)
- Make sure Keep Profile is checked.
- Option Trim Surfaces / Orthogonal
- Grab Surface, grab polygon. - Note where grabbing surface - internal or external keep
- Do again with circle
- Do again with bSpline
- note which side you grab matters to which one you keep

- Same Tool
- Change settings to Split Surface - do again
- Change to Project Curve - do again

- Go to other surface
- Mesh From Element (Z1) --> get terrain-like triangulated surface
- Go back to Trim Surfaces tool, with Trim Surface method - perform on the meshed surface. Same thing.

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(Rotate/Copy mesh surface and bSpline up to a standing wall, use Trim Tool)
- We're doing these on top-down surfaces, but they work just as well standing up.

Make a Copy of one of the original surfaces
- Untrim Surface tool (S3)
- Select Reverse as method and see what happens.
- Select Remove All as method, to remove all cuts and get back to original uncut surface.

- Rotate surface upon itself using Front Constuction Plane and 3 Point method, Making a Copy
now we have two intersecting surfaces.
- Use Trim Surfaces (S1) tool. Select both Trim 1st and Trim 2nd Surface options. Select the pieces of each surface you want to keep.

Planar Slice Tool - extract sections and profiles of geometry
- Copy and Untrim the surface again (or just undo a few times)
- Go to the Top View orientation
- Draw a line over and bypassing the surface.
- Copy the line several times to make a bunch of them at equal intervals. (use number of copies option on copy tool)
- Now using the selection tool, grab all of the lines
- Use the Planar Slice tool (F4) with the First option icon (Slice by Element), and confirm.
- Rotate around to see the sliced section lines. You might need to delete the surface or change layers to see it clearer.

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This can also be done with planar, non-planar and non-linear elements
- draw a polyline at various right angles across the surface. Extrude in both directions to get an upright plane.
- use the Planar Slice tool to generate the section along that edge.
- Do the same with a series of bSpline curve extrusions.

Viewing Control, Perspective, Sections, and Saved Views
- Create a still-life of platonic objects
- Create a large solid box as a simple room. Put other objects - pyramids, ellipsoids, spheres, polyhedra, etc. into it.
- Use the Shell Solid Tool (T5), with option to Shell Outward, choosing the top face to remove.
- Place a new Slab Solid on the top, snapping to corner points to make a roof again.

- Go to the front view
- Stretch into a perspective (quick) - you already know how to do this.
- Now change the camera lens. Normal - Telephoto - Extra Wide - Dynamic

- Return to Normal Camera
- Visualization Tools (left hand side)
- Define Camera Tool (E2)
- Make sure Display View Cone and Continuous View Updates are checked
- Choose Pan Left and Right (Second Tool in options) - click in the window and move the mouse to pan
- Choose Pan Up and Down - click and move mouse to pan
- Choose Dolly Forward and Back (6th option tool) - click and move mouse to move in and out
- Choose Lens View Angle (8th option tool) - click and move the mouse to zoom the camera's lens.
- Click More button. Expand Camera Position. Set Eye Pt and Target Pt Z elevation to 5 (feet). Quick way to establish proper elevation.

- Unmaximize your window - get back to 4 views.
- Fit view in each of the four views
- Notice the View Cone and the white dots indicating viewing angle, eye point, and target point.
- Manipulate these points. Watch the perspective view change as a result.

- Go to View Attributes drop down (top left of perspective window)
- Check Clip Front and Clip Back
- Look in perspective view now and you will see part of the model cropped away.
- Look in the viwe cone - there is a new line and control dot representing the section plane. Move it and watch the section cut move in the perspective window.
- Set it to a location that you like
- Find the Saved Views drop down from the top tool bar (mountain in a camera lens).
- Choose the Two-Hands icon to capture your view.
- Give it a name in the settings dialog that appears, then click in the perspective window to save it. A balloon will pop up indicating it is saved.
- Rotate and zoom to a different view.
- Go back to the Saved Views drop down and double click the named view you just saved. Your view will return to this state.

Drawing Extractions
- Close MicroStation.
- Open Bentley Architecture (from Bentley Building subfolder of the Bentley Program Group in the Start Menu)
- Find and Open the file you were just in
- Fit view in all views.

- Go to Main Menu at top of screen, find Project Management > Drawing Manager > Drawing Manager
- In Drawing Manager window, choose the New (Create a Drawing Definition) icon (first icon)
- Type in a name for this drawing - call it Plan 1
- Click on Region tab - choose 2 Points & Direction and click Define
- In your front elevation view (usually lower left), draw a line at an appropriate "plan" elevation level. This will be the section cut line of the plan.
- Choose a direction (up or down) to view. For a plan, this should be down. Now click to finish it
- Go to the Cut Plane View tab - make the Weight of the cut plane a weight of 2 (heavier line weight for what is cut in section)
- Go to Forward View tab - notice that it is set to Process a Forward View (interior elevation beyond the cut plane)
- Go to Reflected View tab - notice that is NOT set to process the reflected view by default. Leave this alone unless you want the reflected view .
- Go to Output tab - Choose Output to Single Model
- Click SAVE at the top of the window. This saves your drawing definition.

- Do the same sequence for a Section view, Defining the section with 2 Points & Direction and using the plan window (top left) to place it.

- Do the same for a Saved View, using the section perspective view we saved earlier.
- The only difference here is to use Saved View instead of 2 Points & Direction to define the Region, then select the saved view you want to use.
- Then go to Output tab and select the checkbox to Sync Perspectives with Cut Plane
- Click SAVE

- Now back in the main Drawing Extraction Manager Window, select each of the defined drawings in the list (use CTRL to select more than one of them), and then click Calculate (blue paper with pencil icon) to calculate all of the drawings.
- When done, choose one of them and click View (far right icon) to see the drawing in preview
- or Open (second from right) to open the extracted drawing as it's own file for editing.

- Go back to main Model File via Top Menu > Project Management > Drawing Manager > Open Model File
- Modify your model -> move things around, resize, add more stuff
- Go back to the Drawing Manger window.
- Click Calculate again, then open an extracted drawing. The extracted drawing has been updated to reflect your changes.