Polygon Objects - Flat

Polygon-shaped flat objects are characterized by their uniform height and user defined footprint. They are created in Plan View by specifying each vertex on the boundary. Polygon flat objects may have curved surfaces attached to the current endpoint by pressing the F4 key on the keyboard. First, you will be prompted to specify the endpoint of the arc, then the arc curvature will be specified. If desired, you may flip the arc in the opposite direction by pressing the F5 key. Once the arc is complete the cursor will be attached to the second point so that you may continue specifying additional vertices.

The object’s properties are specified in the Object-Polygon-Flat dialog. These properties include a unique object label, description, wireframe color, labeling options, side height, and surface reflectances. When the object is initially specified, the top, sides and bottom are assigned color and reflectance values. You may edit the object, after creation, to assign a different reflectance (color) to each surface individually, if desired.

1. From the Add menu select Object - Polygon - Flat, or from the Rooms/Objects Toolkit select .
2. Specify a unique label for the object up to 32 characters long. The default label will be Object_1. Unless changed, subsequent labels will be Object_2, Object_3, etc. If a number is used for the label, subsequent labels will be incremented accordingly.
3. If desired, a description may be entered, up to 80 characters long. Meaningful descriptions including size and color will be useful for schedules.
4. The object will be created in AGi32 using the selected Wire Frame Color. This color is not used in AGi32's render mode, it is only used to represent the object 's shape in the graphics window. By default, this color is blue. To change it, click in the color cell. The Color dialog will appear for your use.
5. If surface labeling is desired, click on the Labeling button. A separate dialog will appear for specification of text labels for the object and/or its surfaces.
6. Enter the height of the object in the Height of Sides text box.
7. All object surfaces are assigned a color. By default, the surfaces are assigned a shade of gray corresponding to a reflectance value of 0.5. You may change the reflectance of a surface by simply typing a new value in the Reflectance cell for the Top, Sides, or Bottom. You may change surface color and its corresponding reflectance by clicking in the Color cell for the Top, Sides or Bottom. The Color Selection dialog will appear allowing you to select surface colors based on user defined reflectances.
8. You may assign a texture to the surface by clicking in the Texture cell. The Select Texture dialog will appear so that you may choose a texture from the Textures database. Alternately, you may browse for a texture anywhere on your system or assign a texture already in use on another surface in the job file. Once the desired texture is selected, you'll determine how the texture should be applied to the surface. Textures may be stretched across the entire surface, applied in a grid pattern or assigned a Static size (representing real dimensions) and tiled on the surface accordingly. In addition, you may opt to rotate the texture on the surface.

To delete a texture from the surface, Ctrl-click in the Texture cell and select the Delete key on your keyboard. When a texture is deleted from a surface, its correlated color and reflectance are used as the current color and reflectance.

• To apply additional surface properties (such as Texture, Transmittance, Transparency, Luminance, Specularity, Color Bleed control or surface specific Mesh Levels) to any of the object surfaces, you must first position the object in the environment. Then, either Edit the object and select the Surface Edit button in the Edit dialog or use the Surface Edit command to select the object.
• Removing Surfaces - Removing surfaces allows you to append other surfaces to factory defined shapes and create more complex models. Surfaces may only be removed from an object after it has been initially located in the environment. Surfaces may be removed by Editing the object and selecting the Surface Edit button in the Edit dialog or using the Surface Edit command once it has been placed.

9. The Surfaces Same Attributes button will cause all surfaces to take on the color/reflectance/texture of the first surface in the list.
10. Creation Method: Choose whether to manually create the boundary lines of the polygon or choose an existing drawing entities as the boundary line.
• If a tilted line is selected, the polygon will be projected down to and created at lowest Z coordinate elevation.
11. Click OK to create the polygon. Follow the steps below depending on the selected creation method:

Specify a Polygon Manually

Create Polygon from Drawing Entities

To change the polygon elevation, move the cursor into the Z-Coord text box (before clicking the first point) and enter a new value or use the up and down arrow keys on the keyboard. Note: If the Z-Coord value is not equal to zero,a warning icon will be displayed to alert the user to this condition. Locate the first point of the polygon and click the left mouse button. Move the cursor to the second vertex on the polygon and left click again. You may specify an arc at the end of the current vertex by pressing the F4 key on your keyboard. Locate the second endpoint of the arc and left click again. By default, arcs are created in the counterclockwise direction, but their direction can be changed by pressing the F5 key. Specify the arc's radius by dragging the cursor and left clicking the mouse button. The object line will be attached to the arc's endpoint. Continue in this fashion until the polygon is complete. Right click to close the polygon shape. The Polygon object will be created.

Locate the pickbox on the drawing entity line you wish to use and left click. If a valid polygon is found (see Notes below), it will be displayed as a bold line, and the Polygon Search results dialog will appear: Accept Polygon and Repeat - Select another polygon line as a template for another object with the same properties. Use pickbox to select another closed polygon. Accept Polygon - Create object using selected entity as polygon boundary. Reselect Entities - Choose this option if invalid polygon was found or if incorrect line was chosen. Use pickbox to select another closed polygon. Manually Specify Polygon - Select vertices manually to specify polygon boundary, right clicking once all vertices are specified. This option is necessary if no valid polygon is found. Cancel - Do not create object. Notes: Drawing Entity line segments do not need to be joined, just need to be within tolerances (2 decimals of precision - .05) Line segments do not need to make a closed polygon - AGi32 will automatically close boundary line AGi32 filters related lines by color. Caveats: Disconnected line segments or line segments disconnected by gap larger than tolerance level will not form valid polygon. Polygons with intersecting lines will not form valid polygon. Incomplete polygons are not valid, may close in an unacceptable manner.