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## 12.1 Geometric Restrictions

As we have just mentioned, geometric constraints establish the geometric arrangement and relationship of objects with respect to others. Let's see each one: 12.1.1 Of coincidence This restriction forces the second selected object to coincide in one of its points with some point of the first object. As we move the object selector, Autocad highlights ...

## CHAPTER 12: PARAMETRIC RESTRICTIONS

When we use an object snap end point, or center, for example, what we are actually doing is forcing the new object to share a point on its geometry with another object already drawn. If we use a "Parallel" or "Perpendicular" reference, the same thing happens, we are forcing the geometric arrangement of the new object with respect to ...

## CHAPTER 11: POLAR TRACKING

Let's go back to the "Drawing Parameters" dialog. The "Polar Tracking" tab allows you to configure the feature of the same name. The “Polar Trace”, like the “Object Snap Trace”, generates dotted lines, but only when the cursor crosses the specified angle, or its increments, either from the coordinates of ...

## CHAPTER 10: TRACKING OF REFERENCE TO OBJECTS

The "Object Snap Trace" is a valuable extension of the "Object Snap" features for drawing. Its function is to lay out temporary vector lines that can be derived from existing "Object References" to mark and obtain additional points during the execution of drawing commands. In other words, while ...

## 9.1 .X and .Y Dot Filters

References to objects such as “From”, “Midpoint between 2 points” and “Extension” allow us to understand how Autocad can indicate points that do not exactly coincide with the geometry of existing objects but that can be derived from it, an idea that programmers have used to design another drawing tool called "Point Filters" that ...

## CHAPTER 9: REFERENCE TO OBJECTS

Although we have already reviewed several techniques to accurately draw different objects, in practice, as our drawing becomes more complex, new objects are usually created and always located in relation to what has already been drawn. That is, the elements already existing in our drawing give us geometric references for the new objects. With…

## 8.5 Tables

With what we have seen so far, we know that "pulling" lines and creating one-line text objects is a task that can be done quickly and easily in Autocad. In fact, it would be all that would be needed to create tables easily and quickly, combining, for example, lines or polylines with text objects until creating ...

## 8.4 Multiple Line Text

In many cases, the pictures require no more than one or two descriptive words. In some cases, however, the necessary notes can be two or more paragraphs. So the use of one line text is absolutely inoperative. Instead we use multiline text. This option is activated with the ...

## 8.3 Text Styles

A text style is simply the definition of various typographic characteristics under a certain name. In Autocad we can create all the styles we want in a drawing and then we can associate each text object to a specific style. A relative limitation of this procedure is that the styles created are stored together ...

## 8.2 Editing Text Objects

From chapter 16 onwards we cover topics that have to do with editing drawing objects. However, we must see here the tools available for editing the text objects that we have just created since their nature differs from that of the other objects. How will it look ...

## 8.1.1 Fields in text

Text objects can include values ​​that depend on the drawing. This characteristic is called “Text fields” and they have the advantage that the data they present depends on the characteristics of the objects or parameters to which they are associated, therefore they can be updated if they change. In other words,…

## 8.1 Text in a line

In many cases, the annotations in a drawing consist of one or two words. It is common to see in architectural plans, for example, words like "Kitchen" or "North Facade". In situations like this, the text on a line is easy to create and locate. For that, we can use the command "Text" or the button ...

## CHAPTER 8: TEXT

Invariably, text must be added to all architectural, engineering or mechanical drawings. If it is an urban plan, for example, you may have to add the names of the streets. The drawings of mechanical parts usually have notes for the workshop and there will be others that, at least, contain the name ...

## 7.4 Transparency

As in the previous cases, we use the same procedure to establish the transparency of an object: we select it and then we set the corresponding value from the "Properties" group. However, it should be noted here that the transparency value can never be 100%, since it would make the object invisible. Too…

## 7.3 Line thickness

Line thickness is just that, the width of an object's line. And as in the previous cases, we can modify the line thickness of an object with the drop-down list in the "Properties" group of the "Home" tab. We also have a dialog box to set the parameters of said ...

## 7.2.1 The alphabet of lines

However, it is not a question of applying different types of lines to objects without any criteria. In fact, as you can see from the linetype names and descriptions in the "Linetype Manager" window, many of the linetypes have very clear specific purposes in ...

## 7.2 Types of Lines

The linetype of an object can also be changed by choosing it from the corresponding drop-down list in the Properties group on the Home tab, when the object is selected. However, Autocad's initial setup for new drawings only includes a solid line type. So, to begin with, there is not much of ...

## 7.1 Color

When we select an object, it is highlighted with small boxes called grips. These boxes help us, among other things, to edit the objects as will be studied in chapter 19. They should be mentioned here because once we have selected one or more objects and, therefore, present “grips”, it is possible to modify their ...