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CADD-1 Lesson 3

Sketching, Selection, and Zooming

Command/OptionDefinition
Select Options Methods for selecting entities on the screen in AutoCAD
Entity The smallest predefined element in a drawing.
Selection Set Allows you to group objects (entities) together for modification.
Window option Selects entities completely inside the box.
Crossing option. Selects entities inside the box as well as any it touches.
Remove option Changes from Select Objects to Remove Objects
Add option Changes Remove Objects back to Select Objects.
Last option Selects the last entity you created.
Previous option Selects the previous selection set.
Fence option Draws a series of lines that selects any objects the line touches.
Crossing Polygon option Similar to a crossing box, but allows you to create an irregular polygon.
Crossing Window option Similar to Window, but allows you to create an irregular poly window around objects to be selected.
All option Selects all entities within the drawing. (Unless they are locked or frozen)
Undo option Removes inadvertently selected entities.
Zoom All Displays the whole drawing to the drawing limits.
Zoom Center Uses a center point and new height to zoom.
Zoom Dynamic Uses a display box and Pan to move around the drawing. (Useful with large drawings)
Zoom Extents Displays the largest image possible in the drawing area.
Zoom Previous Restores the displayed view prior to the current one. Only the last 10 views can be recalled.
Zoom Scale Uses a magnification number to zoom in or out.
Zoom Window Enlarges the area that the box is defined around.
Zoom Realtime provides for an interactive zooming capability. (Scroll button on the mouse can be used for this feature)
Aerial View Zooming tool that displays the drawing in a separate window so you can quickly move to that area.
PAN Allows you to quickly move around a drawing without changing the zoom value.
Transparent Zoom Allows you to zoom without affecting the current command.
VIEWRES Sets the resolution for object generation in the current viewport. (Our setting = 2000)
3 Terms that define the nature of a Sketch. Temporary, Permanent, & Presentation.
Sketching Provides for a quick method to share ideas effectively.
OOPS command Restores the previously erased object.
UNDO command Reverse the previous command(s).
REDO command reverses the previous Undo command.
Permanent Sketch Maintained as part of a company's records.
Temporary Sketch Used once and discarded.
Point, Line, Plane, and Texture. 4 basic visual symbols used in sketching.
Isometric & Oblique 2 basic types of Pictorial Sketches.
Types of entities in AutoCAD Lines, Arcs, Circles, Dimensions, Text, Blocks, Points, Shapes, & Solids.
Verb/Noun Selection Technique Traditional method of selecting objects. Select a command, then select objects.
Noun/Verb Selection Technique Utilizes Grips to reverse this process. Selects entities first, then applies the command.
Guidelines Used to keep Lettering straight.
Presentation Sketch A refined pictorial sketch used to convince a client of a design idea.
Alphabet of Lines various linetypes & thicknesses used to identify lines in a Technical Drawing
Borderline Heaviest Line. Identifies the outer edge of the sheet or limits.
Object Lines 1/2 as thick as border. Identifies the actual object being drawn.
Hidden Lines Identifies the parts of a drawing that cannot be seen in a particular view.
Dimension Lines Terminates with arrowheads at the end identifying the linear length.
Extension Lines Same weight as the dimension line. Indicate the beginning and end of a dimension.
Centerlines Indicates the centers of round objects or the symmetrical axis of an object.
Lasso Holding the pick button on your mouse will allow you to create irregular shaped curves around objects to be selected.
Created by: tmurphy