"Sight" Survey  (SS75)

CAD Jumps and Drawing Snap Modes

"Sight" Survey has two ways of moving exactly onto an existing part of a drawing: Jumps and Snap Modes. Drawing jumps and snap modes can only be issued while "Sight" Survey's Drawing Window is prompting you for a point. (i.e. The prompt bar at the top of the Drawing Window must be prompting for a point.)  These commands will not work when the Drawing Window shows the default Select Cursor  ().

A Jump moves your cursor exactly onto an existing part of the drawing, for example onto the end of a line. If you want to accept the point that you have jumped to, such as for the first point of a line or as a point through which a traverse line must pass, you must first enable the Quick Pick (QP) toggle or use one of the following Select routines: Select Point (SP), Select Bearing (SB) or Select Distance (SD). Usually, you must press Enter or click the left mouse button to actually set the point at the jump location. By combining jumps with the Quick Pick (QP) routine, an accurate "move and accept" is performed each time you press Enter or click your left mouse button. However, if you move your mouse before you press Enter or click the left mouse button, the point will be lost and you will have to perform the jump again.

Within "Sight" Survey, when you implement a Snap Mode, it sets the cursor snap mode for the next selected point. Changing the default snap mode is useful when you must exactly snap onto a point or other entity in a congested part of the drawing. The snap mode overrides the jump mode and allows more accurate entity selection. For example, if you jump to a point where a Cross has been placed, the default Grab All Cursor () will jump to the nearest entity within the cursor box. By enabling a Nearest Intersection snap mode, it forces the center of the Cross to be selected instead of an end point of one of the lines of the Cross.

For your convenience, the following summary contains a quick reference of the most commonly used jumps and snap modes. For more detailed information on these jumps, see the sub-sections: Jumps; Precision Jumps; and Ortho Snaps beginning on page 143 in the original "Sight" Survey manual.)

Locks & Toggles

Cursor Snap Modes

[SHIFT] F	Enables Freehand Cursor ( ) Snap Mode - Cancels Jump/Snap mode.
[SHIFT] A	Enables Grab All Cursor ( ) Snap Mode.
[SHIFT] J	Enables Nearest Point Cursor ( ) Snap Mode.
[SHIFT] N	Enables Nearest Line/Arc Cursor ( ) Snap Mode.
[SHIFT] Y	Enables Nearest Intersection Cursor ( ) Snap Mode.
[SHIFT] E	Enables Nearest Center Point Cursor ( ) Snap Mode.

Precision Jump Codes

A	Jumps to any point in the cursor box.
J	Jumps to the nearest point. (Also, clicking your mouse while a point lies within the cursor box will cause "Sight" Survey to jump or draw to that point.)
N	Jumps to the nearest line or arc.
Y	Jumps to the nearest intersection.
E	Jumps to the center point of the nearest arc or circle.
T	Jumps to the midpoint of a line.
O	Jumps an exact distance and bearing.
C	Jumps to an exact coordinate location.
H	Jumps to the center of the Drawing Window.

Directional Jump Codes

u	Jumps upwards a set number of vertical units.
[SHIFT] u	Jumps upwards the last set number of vertical units.
d	Jumps downwards a set number of vertical units.
[SHIFT] d	Jumps downwards the last set number of vertical units.

Directional Jump Codes

l	Jumps to the left a set number of horizontal units.
[SHIFT] l	Jumps to the left the last set number of horizontal units.
r	Jumps to the right a set number of horizontal units.
[SHIFT] r	Jumps to the right the last set number of horizontal units.
h	Jumps diagonally up and to the left a set number of units.
p	Jumps diagonally up and to the right a set number of units.
f	Jumps diagonally down and to the left a set number of units.
q	Jumps diagonally down and to the right a set number of units.
[CTRL] T	Jumps to an exact ratio distance such as 0.5.

Drawing Zoom Shortcuts (These work anytime)

[CTRL] M	Magnifies the drawing at the cursor location.
[CTRL] D	De-Magnifies the drawing at the cursor location.
[CTRL] A	Zooms all of the drawing onto the screen.
[CTRL] W	Initiates the Zoom Window command.

© 2008 by Carlson Software, Inc.   Last modified November 18, 2008