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Choose And Define Hatch Patterns

May 20, 2011

User can use predefined hatch pattern or solid hatch and create hatch pattern of your own.


Create Solid-Filled Areas

Methods of creating solid hatch:

  • Choose Solid option from BHATCH command line prompt, hatch the selected entity with specified pattern

  • Solid hatch

  • Wide polyline or donut

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Create Gradient-Filled Areas

Fills the area with gradient appearance, which is a type of solid hatch represents solid entity as well.

Gradient hatch refers to a kind of hatch pattern among different gradations within one or two colors. Which can be used to increase the drawing demonstration effects or use as background.

Like creting other hatch patterns, you can crete gradient hatch as well as associative gradient hatch in the same way. But the color assigned in gradient hatch can't be controlled by print style.


Use Predefined Hatch Patterns

Fills the specified area with different material so as to distinguish project parts. User can select hatch patterns to distinguish different parts of the object and represent the object materials during hatching process. 14 ISO hatch patterns are provided, ISO pen width can be specified while selecting ISO hatch patterns. Pen width option is set to determine the pen width of the pattern.


Create User-Defined Hatch Patterns

When selecting hatch patterns, you can define simple patterns by changing angle and space of pattern lines based on current linetype. This is so-called User define.


Specifying a hatch pattern

A hatch pattern consists of a repeating pattern of lines, dashes, and dots. You can select a hatch pattern from a set of predefined patterns, or you can define a pattern of your own. The hatch pattern you used most recently is the default pattern the next time you add hatching. The program supplies predefined standard hatch patterns, which are stored in the ICAD.pat and ICADISO.pat hatch pattern library files.

NOTE The ICAD.pat hatch pattern library files are ANSI (American National Standards Institute) compliant patterns; the ICADISO.pat hatch pattern library files are ISO (International Standards Organization) compliant.


To specify a predefined hatch pattern

  1. Choose Draw > Hatch.

  2. From the Hatch dialog box, click the Style Options tab.

  3. Under the Hatch – Type and pattern, in the Type list, click Predefined. With Predefined, you can apply a scale factor to make the pattern larger or smaller than the default size.

  4. For Scale, enter the scale factor as a percentage of the default.

  5. For Angle, enter the angle of the pattern in degrees (1-360). The default angle is clockwise, you can change the angle of any hatch pattern by entering a numerical value.

  6. For ISO Pen Width, enter the pen width. This option is only available if you select existing ISO hatch pattern in in Pattern option.

  7. To copy the pattern properties from an existing hatch, choose Inherit Properties.

  8. To associate the hatch pattern to its boundary objects, under Other options, select the Associative check box. An associative hatch updates automatically if you move any of its boundaries.

  9. To continue, add a hatch by doing one of the following:

  • In the Boundaries , click Add: Select objects to select the objects you want to add a hatch.Repeate the procedures following step 2.

  • In the Boundaries , click Add: Pick points to select an area or boundary you want to add a hatch. Repeate the procedures following step 2.

Draw toolbar\

Command line BHATCH


To specify a user-defined hatch pattern

  1. Choose Draw > Hatch.

  2. From the Hatch dialog box, click the Style Options tab.

  3. Under the Hatch – Type and pattern, in the Type list,click User Defined.

  4. For Spacing, enter the line spacing for the pattern.

  5. To copy the pattern properties from an existing hatch, choose Inherit Properties, and select a hatch pattern from a hatched object in the drawing.

  6. To associate the hatch pattern to its boundary objects, under Other options, select the Associative check box. An associative hatch updates automatically if you move any of its boundaries.

  7. To continue, add a hatch by doing one of the following:

  • In the Boundaries , click Add: Select objects to select the objects you want to add a hatch.Repeate the procedures following step 2.

  • In the Boundaries , click Add: Pick points to select an area or boundary you want to add a hatch. Repeate the procedures following step 2.

Draw toolbar \

Command line BHATCH


To use a predefined library pattern

  1. Choose Draw > Hatch.

  2. From the Hatch dialog box, click the Style Options – Hatch tab.

  3. Select a predefined type.

  4. To select a predefined pattern, do one of the following:

  • In the Patterns list, click the pattern name.

  • Click the graphical representation of the hatch pattern.

  1. To continue, add a hatch by doing one of the following:

  • In the Boundaries , click Add: Select objects to select the objects you want to add a hatch.Repeate the procedures following step 2.

  • In the Boundaries , click Add: Pick points to select an area or boundary you want to add a hatch. Repeate the procedures following step 2.

Draw toolbar \

Command line BHATCH

NOTE Hatch patterns are memory intensive and can take a considerable amount of time to draw and display. To improve performance, add hatching as one of the last steps when you create a drawing, or insert hatches on a separate layer that you can freeze as you continue to work on your drawing.


Commands Reference

BHATCH: Fills an enclosed area or selected objects with a hatch pattern or gradient fill

FILL: Controls the filling of objects such as hatches, two-dimensional solids, and wide polylines

DONUT: Draws filled circles and rings

PLINE: Creates two-dimensional polylines

SOLID: Creates solid-filled triangles and quadrilaterals

System Variables Reference

HPBOUND: Controls the object type created by the BHATCH and BOUNDARY commands

FILLMODE: Specifies whether hatches (including solid-fill), two-dimensional solids, wide polylines, are filled in

HPANG: Specifies the hatch pattern angle

HPDOUBLE: Specifies hatch pattern doubling for user-defined patterns

HPSCALE: Specifies the hatch pattern scale factor, which must be nonzero

HPNAME: Controls the object type created by the BHATCH and BOUNDARY commands

HPSPACE: Specifies the hatch pattern line spacing for user-defined simple patterns, which must be nonzero 

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