D4. Computer graphic design.

Open the LibreCad program that is in Start / graphics / libreCad

Save the file as D4_NameSurname.dxf  in the deskstop. The program extension is dxf, although finally we will save it again or export it with another extension (pdf and png). 

Go to Editar/Preferencias de la aplicación and choose english in language settings.

All the tools you will use are in the menu on the left or in the tabs on the upper menu tool list.

The origin coordinates axis are located in the red cross These point is considered (0,0).

To draw we can use the mose or drawing by comands. The second option is more precise. To include in the interface screen go to menu widgets/dockwidgets/cmd or command bar.

Go to Line Tools and select Line from 2 points. In the command line on the bottom left, you will be asked for the first point. Click on this box command line, type 0;0 and press Intro.  You will then be asked for the next point; type in 80;0. Now we have the horizontal line.

To draw the right vertical line with a height of 60, we can use “absolute coordinates” (using 0;0 as our reference point) enter 80;0 as the first point and 80;60 as the end point.

To move a distance of 20 units to the left from point 80;60 to point 60;60, we will use relative coordinates., enter @ as the first point and then @-20;0 as the next point. When we add the sign @, we are telling the program the number of units that it must move from the previous point.

To draw the rest of the points in the figure, we can use absolute commands and related commands. Enter the following points in the command line: @-20,0 @0,-30 @-10,0 @0,30 and continue on your own to complete the figure the last point is 0,0. Then press Esc or right-click with your mouse to stop drawing. It should look like Figure

In the menu on the right, click on Add Layer (you can also go to Layer / Add Layer), type “Dimension” as the name of the layer and colour it green.

Go to Dimension Tools (”), select Horizontal and click on End. Click on the coordinates origin and then at the end of the base, to add the first dimension. Repeat these steps to add dimensions to the other horizontal parts. you have to take into consideration dimension rules.

To dimension the vertical parts, repeat the process, but this time select Vertical. 

Save the file. Check the file has been saved correctly

Export the file as png image. Click on export as png. Save it as D4_NameSurname.png

Upload both files to the aula virtual.