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CADD-1 Lesson 3
Sketching, Selection, and Zooming
| Command/Option | Definition |
|---|---|
| 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. |