You can define a REM primitive object (line, arc, or circle) whenever you need to edit or move a raster entity.
For example, you may need to move a lot line in a parcel map. You can select the lot line as a primitive object, and use the AutoCAD MOVE command to move the line to a new location.
Note: Using an AutoCAD command such as MOVE causes the primitive object to be different from the original image. AutoCAD Raster Design toolset erases the original raster data from the source image. For more information, see How REM Objects Are Associated with an Image.
You can define three primitive objects: lines, arcs, and circles. You can also use two other methods:
- The Smart Pick command automatically detects the geometry of the selected raster entity and defines the entity as a primitive line, arc, or circle.
- Define a primitive object using the geometry of an existing vector line, arc, or circle.
If your REM primitive is defined over an intersection, the intersection is preserved even after you move the primitive object.
Click here to see an illustration of a lot line (shown in red) defined as a REM primitive line.
Note: You cannot remove subsections of a primitive object.
Grip behavior depends on the primitive object you define:
- A line has three grips: one at the start, one at the end, and one in the center of the line. Grip editing a REM line is the same as editing an AutoCAD line. If you stretch an end grip point, AutoCAD Raster Design toolset redraws the line with the new endpoint, respecting the original width. If the line is redrawn, AutoCAD Raster Design toolset uses the current linetype. If you move the center grip, the entire object moves.
- A circle has five grips: one at the center of the circle and four on the circumference. Grip editing a REM circle is the same as editing an AutoCAD circle. If you move the center grip, the entire circle moves. If you move one of the grips on the circumference, the radius changes. If you change the radius of the circle, AutoCAD Raster Design toolset redraws the circle using the current linetype but preserving the original width.
- An arc has three grips: at the start, end, and midpoint of the arc. Grip editing a REM arc is the same as editing an AutoCAD arc. If you stretch a grip point, the arc is redrawn with its new start, end, and radius, respecting the original width. If the arc is redrawn, AutoCAD Raster Design toolset uses the current linetype.