Type of lines and Angle

When the distance between two points are joined with each other, which is formed is called line. Technical Data used in the field explained in autocad course in Islamabad. To describe the shape and size of an object. Various types of lines  have been developed.

These lines help in reading the drawing easily as well as classified into many types according  to their construction and uses. Object out line, Hidden line, center line, dimension line, extension line, cutting plane line, Ditto line,Sectio line, Construction line, Leader line, Arrow head to describe  the shape and size of an object,vaiours types of lines are being developed. Some more details of autocad course in Islamabad are as under.

 These lines help in reading the drawing  easily as well as have good appearance to the drawing. The lines are classified into many types according to their construction and uses. In the bracket the symbols of pencils in respect of their degree of softness or hardness  are written which are recommended to draw the line. Refer figures on next page.

In entering drawing  different  types of  lines  are used to describe different objects  and different reasons. The following types of lines  are the important lines used in the engineering  drawing. Out lines are drawn in the outer edge of an object. This is a thick line drawn continuously without any break, also called object lines. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join autocad course in Rawalpindi.

Control Visibility in Layout Viewports

You can control the visibility of objects in layout viewports using several methods. Technical Data used in the field explained in autocad course in islamabad, These methods are useful for emphasizing or hiding different elements of a drawing, and for reducing screen regeneration time.

A major benefit to using layout viewports is that you can selectively freeze layers in each layout viewport. You can also specify default visibility settings for new viewports and for new layers. As a result, you can view different objects in each layout viewport.

You can freeze or thaw layers in current and future layout viewports without affecting other viewports. Frozen layers are invisible. They are not regenerated or plotted. In the illustration, the layer showing terrain has been frozen in one viewport. Thawing the layer restores visibility. The easiest way to freeze or thaw layers in the current viewport is to use the Layers palette. Some more details of autocad course in islamabad are as under.

In the Layers palette, on the right side, use the column labeled VP Freeze to freeze one or more layers in the current layout viewport. To display the VP Freeze column, you must be on a layout. Specify the current layout viewport by double-clicking anywhere within its borders.

You can set visibility defaults for specific layers in all new layout viewports. For example, you can restrict the display of dimensions by freezing the DIMENSIONS layer in all new viewports. If you create a viewport that requires dimensions, you can override the default setting by changing the setting in the current viewport. Changing the default for new viewports does not affect existing viewports. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join autocad course in Rawalpindi.

Create and Modify Layout Viewports

You can create a single layout viewport that fits the entire layout or create multiple layout viewports in the layout. Technical Data used in the field explained in autocad course in islamabad. Once you create the viewports, you can change their size, their properties, and also scale and move them as needed.

It is important to create layout viewports on their own layer. When you are ready to output your drawing, you can turn off the layer and output the layout without the boundaries of the layout viewports.

With MVIEW, you have several options for creating one or more layout viewports. You can also use COPY and ARRAY to create multiple layout viewports.

You can create a new viewport with nonrectangular boundaries by converting an object drawn in paper space into a layout viewport. Some more details of autocad course in Islamabad are as under.

You can use the MVIEW command to create nonrectangular viewports, With the Object option, you can select a closed object, such as a circle or closed polyline created in paper space, to convert into a layout viewport, The object that defines the viewport boundary is associated with the viewport after the viewport is created,  With the Polygonal option, you can create a nonrectangular layout viewport by specifying points. The prompts are the same as the prompts for creating a polyline.

You can redefine the boundary of a layout viewport by using the VPCLIP command. You can either select an existing object to designate as the new boundary, or specify the points of a new boundary. The new boundary does not clip the old boundary, it redefines it. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join autocad course in Rawalpindi.

Create Multiple-View Drawing Layouts

Paper space is a sheet layout environment where you can specify the size of your sheet, add a title block, display multiple views of your model, and create dimensions and notes for your drawing. Technical Data used in the field explained in autocad course in islamabad.

There are two distinct working environments, or “spaces,” in which you can create objects in a drawing. Typically, a model composed of geometric objects is created in a three-dimensional space called model space. A final layout of specific views and annotations of this model is created in a two-dimensional space called paper space. Some more details of autocad course in islamabad are as under.

Working in model space, you draw a model of your subject at 1:1 scale. Working on a named layout, you create one or more layout viewports, dimensions, notes, and a title block to represent a drawing sheet. Each layout viewport is like a picture frame containing a “photograph” of the model in model space. Each layout viewport contains a view that displays the model at the scale and orientation that you specify. You can also specify which layers are visible in each layout viewport.

After you finish arranging the layout, you turn off the layer that contains the layout viewport objects. The views are still visible, and you can plot the layout without displaying the viewport boundaries. When you use a named layout to prepare your drawing for output, you follow a series of steps in a process. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join autocad course in Rawalpindi.

Control the Display of Edges

Different edge types can be displayed using different colors and line types. Technical Data used in the field explained in autocad course in islamabad, You can also add special effects, such as jitter and line extensions.

In a shaded or wireframe model, the visual style sets the visibility and appearance of isoclines, facet edges, silhouette edges, occluded edges, and intersection edges. Facet edges (the edges between planar faces representing a surface) are displayed only when the angle between the facets is smaller than the crease angle value you specify. Edge modifiers such as line extension and jitter, produce the appearance of a model that is still in the conceptual phase. Jitter makes lines appear as though they were sketched with a pencil. Line extension produces another kind of hand-drawn effect. Some more details of autocad course in islamabad  are as under.

Occluded lines are hidden lines made visible by changing its line type and color. In 2d view, you can change the display of occluded line type with obscured type system variable and occluded color with obscured color system variable.

To control the display of occluded lines in 2d view, you can: hide them or make them partially visible with dashes and dots,  make them completely visible,  make them distinctive or indistinctive by changing its color.

You can only change occluded color when the occluded lines are partially or completely visible. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join autocad course in Rawalpindi.