Hidden Line Rendering with Surface Hatches

In hidden line render mode, it is possible to produce monochromatic conceptual or production drawings by displaying planar hatches wherever a textured surface would exist in a raster-rending mode (Renderworks required).

Surface hatches are an aspect or feature of a texture; they can be used when associated with the texture that is applied to an object. Some of the most commonly used Renderworks standard textures are pre-associated with an appropriate hatch, but the surface hatches can be associated with other textures, changed, and settings can be edited as desired.

Most of the textures with pre-associated surface hatches are material textures that would be applied to building external surfaces, such as brickwork, CMU, concrete, corrugated metal, etc. They are easily identifiable in texture libraries by the text <surf hatch> in the resource name.

If a hatch that is associated with one or more textures is deleted, all textures associated with that hatch have their hatch association set to None.

To display surface hatches on a design layer using an existing hatch and texture association:

To display surface hatches in a viewport using an existing hatch and texture association:

1. On the viewport’s Object Info palette Shape tab, set Background Render and/or Foreground Render to Hidden Line.

2. Click Background/Foreground Render Settings to open the Hidden Line Render Settings dialog box.

Editing Surface Hatches

To associate a hatch with a texture or to edit an existing hatch and texture association:

1. From the Resource Browser, select the texture, and then select Resources > Edit.

2. Surface Hatch displays the name of the surface hatch resource associated with the texture, if any. To associate a new hatch or align and register the existing hatch with the texture, select Edit Surface Hatch.

To navigate directly to the Edit Surface Hatch dialog box without opening the Edit Texture dialog box, select Edit Surface Hatch from the pull-down menu to the right of the Texture list on the Object Info palette Render tab.

Hatches defined with page units cannot be aligned to a texture; therefore the alignment fields are grayed out in the Edit Surface Hatch dialog box.

Parameter	Description
Surface Hatch	From the list of hatches present in the drawing, select a surface hatch to associate with the texture, or select None
Set Hatch Alignment
X/Y Offset	Sets the horizontal/vertical surface hatch offset relative to the texture
I/J Length	Sets the horizontal/vertical repeat distance relative to the hatch definition (I in the red direction and J in the green direction)
Lock button	Select to maintain the aspect ratio between the I and J lengths
Rotation	Sets the degree of rotation from horizontal relative to the texture
Flip Horizontally/Vertically	Flips surface hatch horizontally/vertically relative to the texture
Reset	Reset surface hatch alignment settings
Preview	Displays an outline of the hatch over an image of the texture; control points can be moved for manual adjustment of alignment and registration
Preview Controls	Adjusts the preview position and magnification. Click Pan and drag the preview to the desired location. Click Zoom In or Zoom Out and then click and drag to create a marquee; this zooms in or out on a particular section of the preview. Click Fit to fit the preview to the window (according to Obj Size).
Texture Size	Sets the texture size. This field corresponds to the Size parameter in the Edit Texture dialog box; changes in one location affects the other.

3. Set the desired parameters to align and register the hatch with the texture, and click OK to return to the Edit Texture dialog box.

Hidden Line Rendering with Surface Hatches

Editing Surface Hatches

Parameter

Description