![]() Using the keyboard to select tools and enter coordinates can provide greater speed and accuracy when creating drawings. I would be happy to send a pull request to add this tip to the LibreCAD documentation if that is wanted. LibreCAD’s command line offers users an alternative to using the mouse to select tools and draw. I knew from that I could use command-line coordinates when drawing lines, but using the command line to place a pasted object precisely is like a LibreCAD easter egg for my use case. For a marker 8.648 metres to the west of the laser device, and level with it north-south. The relative zero point on the drawing represents the position of the laser device. Today I tried using Ctrl+V to paste the marker object, then when 'Set reference point' crosshairs appear, switching focus to the command-line box of LibreCAD to enter precise co-ordinates. The Command line tool in the lower right has a transcript window in it that is used to display commands you type, below that is a command prompt indicating what is expected for the next input by LibreCAD (currently set to Command: ), and below that is the entry field wher e you can type commands and other information required by the commands. Drawing tool dock example: Line As an alternative to the Tools menu, the Dock widgets provide more convenient way to access the Drawing Tools: Circle, Curve, Dimension, Ellipse, Info, Line, Modify, and Polyline. You can opt to use the toolbars or command line to perform drawing operations in LibreCAD. Command Line, Layer List, Library Browser, and Pen Wizard. Doing this by eye works fine, but needs a lot of mouse-wheel scrolling into the grid. It is however important to note that LibreCAD only accepts bitmap images and you have to ensure that your scanned image is saved as a bitmap image before trying to import it to LibreCAD. ![]() When pasting the land height marker on to the drawing of the land, I was using 'snap on grid' to get the marker in the exact right place on the drawing. In this example, you will write a program to draw lines on the screen. We are not using 3D CAD because the desired output is a paper map with land heights marked at regular intervals. To draw a line, we click on the button of lines. ![]() Enter a partial command such as cir followed by Tab will complete the command to. My drawing is typically 50 metres wide before being scaled for export to PDF. Tab completion can be used on the command line when entering commands. I am using LibreCAD 2.1.3 on Debian GNU/Linux for 3D land surveying, and my laser measure claims an accuracy of 1mm. ![]()
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