![]() For example, all the walls in a floor plan drawing would be put on a layer named “Walls”. Typically entities with common functions or attributes are put on the same layer. While one layer can contain multiple entities, every entity in a drawing can only be associated with single layer. ![]() Layers could be added to show centre lines or dimensions on an engineering or manufacturing drawings, or to show different building systems on architectural drawings such as exterior walls, partitions, electrical, HVAC, grid lines, etc. Whether for engineering, architectural, construction, manufacturing or other types, layers were used to show different aspects on the drawing. ![]() These sheets were then overlaid one on top of another to produce final drawings. The layers were often drawn on separate transparent sheets of paper. Traditional manual drafting used a similar approach. Layers help organize drawings by allowing users to place and manage related entities. One of LibreCAD’s key features is the ability to use layers. A maximum of eight user defined colors can be added. User defined colors can be modified by right-clicking on a user defined color and selecting a new hue and value. ![]() User defined colors are created by clicking the Add button and then selecting the hue and value from the color selection tool. Selecting ”Custom” will allow a selection from a palette of 36 colors and shades of grey or from a user defined colors. If the block’s color is subsequently changed all entities in the block will be assigned the block’s color. When editing a block, selecting ”By Block” will assign the color that was defined for the block to the added entity. If the layer’s selected color is subsequently changed all entities on the layer will be assigned the layer’s color. Selecting ”By Layer” will assign the color that was defined for the layer (see above) to the entity. The drop-down menu allows the color to be selected ”By Layer”, ”By Block”, from the ”Custom” color selector, or chosen quickly from one of the 16 pre-defined colors: Taking all of this into consideration, we can safely say LibreCAD is a useful tool for generating 2D CAD drawings that did not pop any kind of errors, freeze or hang in our tests.The color for an entity can be selected from the ”Color” selection drop-down menu. The interface requires some getting used to, while the response time is quite good. The computer’s performance is not going to be hampered, as the amount of resources required are low at all times. You can show or hide layers, as well as add, remove, edit or lock them with just a click of the button. The utility can help you to calculate the distance between two points or from a point to an entity, the angle between two lines and the total length of a selected element. You can move, copy, align, rotate, mirror, scale and trim elements, as well as lengthen, bevel, divide, stretch, delete and explode text into letters. In addition to that, it is possible to add plenty of items in your drawings, such as lines, points, circles, ellipses, splines, polylines and text boxes, while you can also zoom in and out with ease. This program supports a pretty long list of formats at import, including DXF, LFF, CXF, JWW, BMP, GIF, ICO, JPG, PNG, PPM, SVG, TIFF, WBMP, XBM and TGA, while export is possible using DXF, LFF, CXF, DDS, ICNS, PBM, PNG, ICO, BMP, SVG, TIFF, ICO and PDF extensions. Impressive import and export capabilities It encloses a menu bar, a pretty large number of buttons so that you can add elements with ease and a few panes to help you view your on-going project, logs and a list with all added layers. The interface you come by might seem a bit too cluttered at first, yet it just requires some getting used to it, especially seeing the comprehensive Help documentation it comes bundled with. The installation process runs quite smoothly, yet if you are interested in bypassing this process altogether, you should know that a portable edition is available for download, called Portable LibreCAD. LibreCAD is a software application that provides users with a free and simple method of designing CAD drawings, import and export items, and take advantage of the integrated templates.
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