This function is similar to the Save HLR to Level feature in previous versions.  It can be used to project flat geometry to the active depth on the active level, using the Hidden Lines Dashed display style.  Entity attributes are maintained.

After configuring the dialog options, you are asked to select the geometry, or instance, to extract.  If non-solids entities are selected, they are only projected.  No attempt is made to apply faceting to them.

Using the Function:

1. Select Extract HLD from the Tools>Extract submenu. The Extract Hidden Lines Dashed Geometry dialog appears (see above). Configure the available dialog settings, and click OK.

2. Select the entities for HLD calculation.

Dialog Options

These options, which are identical for the Flat Hidden Lines Dashed and Flat Hidden Lines Removed options, control how the hidden line renderings are processed by KeyCreator.

PHL (Precise Hidden Lines) Attribute Settings

The options in this tab are:

• Draw Obscured Curves – Enable if you wish to draw curves which are obscured (and therefore not visible in the hidden line representation). Unchecked, the curves will be omitted.

• Flatten Curves – Enable if you wish to project and flatten curves to the current construction plane/depth.

• Draw Tangent Curves – Enable if you wish to project and flatten tangent curves to the current construction plane/depth.

• Curve Resolution (default = 24) – Determines into how many subedges a given curved edge is divided, depending on its curvature.  A higher resolution value (i.e., 36, 48) will divide a complete circle into that many subedges.

The Attributes Tabs

The other three tabs are standard KeyCreator attributes pages*HIDR_CADKEYTYPE_WS that control the appearance of the various line types in the extracted Hidden Line geometry