Команда modify в автокаде
При создании объектов в системе AutoCAD не всегда получается отобразить все существующие характеристики объектов на чертеже, например стоимость, производителя, дату приобретения и т.д. При использовании атрибутов, пользователю предоставляется возможность прикрепления данных к блоку. Которые в последствии могут быть извлечены и использованы в программах для работы с базами данных или даже определены в таблицу AutoCAD’а.
Атрибуты имеют определенные ограничения, например, они должны быть прикреплены к блокам. Тем не менее можно создать фиктивный блок содержащий только атрибуты. Функции базы данных так же имеют ограничены. Но несмотря на это атрибуты являются достаточно эффективным инструментом.
Создание определения атрибута
Первым действием при работе с атрибутами является выбор отдельных объектов, которые будут составлять блок. В случае если блок уже создан, его необходимо разрушить, а затем переопределить.
Исключением является, применение атрибутов без создания новых объектов, в таком случае атрибут будет применен к чертежу в целом.
Для вызова окна Определения атрибутов, необходимо выполнить команду Рисование > Блок > Определение атрибутов.
Раздел Режим, диалогового окна Определение атрибутов, позволяет установить определенные свойства атрибута. Ниже приведена таблица свойств и их описания.
Опция | Описание |
Скрытый | Установленные значения атрибутов не отображаются на чертеже. |
Постоянный | Задает постоянное значение атрибута. Атрибут автоматически принимает значение которое установили. |
Контролируемый | Когда вы вставляете атрибут, появляется подсказка, с просьбой проверить значение. |
Установленные | Автоматически вставляет значение по умолчанию |
Фиксированное положение | Блокировка положения атрибута относительно блока. При установленной опции на возможно переместить атрибут отдельно от блока. Разблокированные атрибуты имеют свой собственный захват, для перемещения. |
Несколько строк | Позволяет атрибуты содержать несколько строк текста. |
Тег – Имя атрибута, по которому могут быть установлены все его вхождения в чертеж. Может состоять из любых символов, кроме пробелов. Все строчные буквы автоматически преобразуются в прописные.
Подсказка – подсказка атрибута, выводимая при вставке блока, содержащий данный атрибут. Если отсавить поле пустым, AutoCAD выведет в качестве подсказки тег. Если в разделе Режим включен пункт Постоянный, поле Подсказка недоступно.
По умолчанию – поле для ввода значения используемого по умолчанию.
Для вставки дополнительного поля необходимо вызвать диалоговое окно Поле, путем нажатия соответствующей пиктограммы.
При вызове диалогового окна Поле, в правой его части можно выбрать соответствующее поле, а в правой части выбрать его дополнительные параметры.
Параметры текста
Данный раздел используется для форматирования текста. Параметры форматирования текста являются стандартными: выравнивание, текстовый стиль, высота текста, угол наклона, а так же ширина рамки текста. При установке флажка Аннотативный, будет включена аннотативное отображение атрибута на чертеже.
Вставка блока с атрибутами
Вставка блока с атрибутами, после его сохранения, аналогична вставке блок без атрибутов. На чертеже автоматически отобразятся соответствующие блоку атрибуты.
Редактирование атрибутов
Редактирование атрибутов возможно до момента создания блока, при помощи палитры свойств, для этого необходимо выполнить команду Редактировать > Объект > Текст > Редактировать, или вызвать команду введя в командной строке ДИАЛРЕД.
Так же выбрать необходимой атрибут, при уже созданном блоке, можно при помощи диалогового окна Диспетчер атрибутов блоков, вызвать которое можно нажав соответствующую пиктограмму во вкладке Вставка.
Редактирование свойств атрибутов
После вставки блока и присвоения ему атрибутов, в атрибутах можно изменить следующие настройки:
- Порядок атрибута
- Тэг
- Видимость атрибута
- Параметры текста
- Свойства (слой, тип, цвет, толщину линий)
- Значение атрибута по умолчанию
После внесения изменений, необходимо обновить блоки для отображения изменений. Для этого выполните команду: Редактировать > Объект > Диспетчер атрибутов блоков, в открывшемся окне выберите Обновить.
Окно Диспетчер атрибутов блоков содержит список всех атрибутов имеющихся в чертеже, в виде таблице отображающей параметры атрибутов. Указать необходимые параметры для отображения в таблице можно в окне Параметры атрибутов блоков вызванного при нажатии клавиши Параметры. Диспетчер атрибутов блоков предоставляет возможность, удаления атрибутов, вызова окна редактора атрибутов для внесения изменений в конкретный атрибут.
Редактор атрибута включает все те же функции и параметры, что и окно Определение атрибута, за исключением наличия вкладки свойства, позволяющей указать параметры отображения: цвет, вес и тип линий, а так же слой.
На этом мы заканчиваем урок посвященный работе с атрибутами. Наш следующий урок станет заключительным в данном цикле, в нем мы расскажем о том как извлекать данные из атрибутов.
Сегодня рассмотрим очень полезную команду в AutoCAD — «Найти и Заменить«. Команда позволяет искать текст в чертеже, заменять найденные строки, управлять найденными объектами и многое другое.
Чтобы запустить команду введите НАЙТИ (_FIND), также на ленте Аннотации есть поле для ввода, куда можно вводить поисковый запрос
В окне команды есть поле поиска, куда нужно вводить запрос, также можно указать область поиска — либо Весь чертеж (поиск будет вестись и на пространстве модели и на всех листах и видовых экранах), либо Текущее пространство\лист (для поиска на конкретном листе), либо Выбранные объекты (поиск в группе выбранных объектов)
Искать очень просто — введите поисковый запрос, нажмите Найти. Система просканирует область поиска и выведет окно готовности
Чтобы просмотреть результаты выполнения команды установите галочку Результаты
Если в открывшейся области дважды щелкнуть на элемент, то AutoCAD автоматически спозиционирует элемент в центре экрана и сделает текст активным.
В правой части области результатов есть три кнопки: Показать выделенные объекты (аналогична двойному щелчку на объекте, описанному выше), Создать набор объектов (выделенные) — позволяет выбрать выделенные в области результатов поиска объекты, Создать набор объектов (все) — позволяет выбрать все найденные объекты.
Если есть необходимость заменить найденный текст, то напишите новое значение в поле Заменить на и подтвердите замену каждого найденного вхождения кнопкой Заменить, либо нажмите Заменить все для замены всех найденных вхождений текста.
В левой части открывшейся области можно указать Параметры поиска, например искать ли во внешних ссылках или нет. В правой части можно определить Тип текста, например искать значения атрибутов блоков или нет.
Безусловно, команда очень и очень полезная. Позволяет найти все вхождения текста, заменить их на новые значения, искать текст конкретного типа в определенных объектах.
By:
Perform operations such as erase, move, and trim on the objects in a drawing.
The most common of these tools are located on the Modify panel of the Home tab. Take a minute to look through them.
Erase
To erase an object, use the ERASE command. You can enter E in the Command window, or click the Erase tool. When you see the cursor change to a square pickbox, click each object that you want to erase, and then press Enter or the Spacebar.
Note: Alternatively, before you enter any command, you can select several objects and then press the Delete key. Experienced users often use this method as well.
Select Multiple Objects
Sometimes you need to select a large number of objects. Instead of selecting each object individually, you can select the objects in an area by clicking an empty location (1), moving your cursor right or left, and then clicking a second time (2).
- With a crossing selection, any objects within or touching the green area are selected.
- With a window selection, only the objects completely contained within the blue area are selected.
The result is called the selection set, which is the set of objects that will be processed by a command.
Tip: You can easily remove objects from the selection set. For example, if you select 42 objects, and two of them should not have been selected, hold down Shift and then select the two that you want to remove. Then, press Enter or the Spacebar, or right click to end the selection process.
Move and Copy
Here's how you would use the COPY command to lay out a row of decorative tiles. Starting with a polyline that represents its shape, you need to make copies that are 1/8" apart.
You click the Copy tool or enter CP in the Command window to start the command. From here, you can choose between two methods, depending on what's more convenient. You will use both these methods frequently.
The Distance Method
The second tile needs to be a total of 9-7/8" + 1/8" = 10" to the right of the original tile. So, you select the tile, press Enter or the Spacebar to end your selection, and click anywhere in the drawing area (1). This point does not have to be located on the tile.
Next, you move your cursor to the right, relying on the polar tracking angle to keep the direction horizontal, and then enter 10 for the distance. Press Enter or the Spacebar a second time to end the command.
The specified distance and a direction from the point (1) is applied to the tile that you selected.
The Two Points Method
Another method, one that you will often use when you don't want to add numbers together, requires two steps. You start the COPY command and select the tile as before, but this time you click the two endpoints as shown. These two points also define a distance and direction.
Next, to add the 1/8" space between the tiles, click the Move tool or enter M in the Command window. The MOVE command is similar to the COPY command. Select the newly copied tile, and press Enter or the Spacebar. As before, click anywhere in the drawing area and move your cursor to the right. Enter 1/8 or .125 for the distance.
Tip: The two points that define the distance and direction don't need to be located on the object that you want to copy or move. You can use two points specified anywhere in your model.
For example, enter the MOVE command. Use a selection method to select the objects in the rectangle (1). Specify a base point (2) and a second point (3) to determine the distance and direction of the move. Press Spacebar or Enter to see the results.
The distance and direction determined by endpoint at 2 and 3 in the illustration are applied to the rectangle.
Create Multiple Copies
Similarly, you can use the two-points method as a repeating sequence. Let's say that you want to make more copies of the circle at the same horizontal distance. You start the COPY command and select the circle as shown.
Then, using the Center object snap, click the center of circle 1, followed by the center of circle 2, and so on.
For larger numbers of copies, try experimenting with the Array option of the COPY command. For example, here's a linear arrangement of deep foundation piles. From a base point, you specify number of copies and the center-to-center distance.
Offset
Most models include a lot of parallel lines and curves. Creating them is easy and efficient with the OFFSET command. Click the OFFSET tool or enter O in the Command window.
Select the object (1), specify the offset distance, and click to indicate on which side of the original that you want the result (2). Here is an example of offsetting a polyline.
Trim and Extend
A popular technique is to use the OFFSET command in combination with the TRIM and EXTEND commands. Trimming and extending are some of the most commonly used operations. Click the TRIM or MOVE tool or enter TR for TRIM or EX for EXTEND in the Command window.
In the following illustration, let's say you want to extend the lines that represent the steps for this deck. You start the Extend command, select the boundary, and then press Enter or the Spacebar.
Pressing Enter or the Spacebar indicates that you've finished selecting the boundaries, and that you're now ready to select the objects to be extended.
Tip: A faster method is to press Enter or the Spacebar right away instead of selecting any boundary objects. The result is that all objects are available as possible boundaries.
Next, you select the objects to be extended (near the ends to be extended), and then you press Enter or the Spacebar to end the command.
The result is that the lines are extended to the boundary.
The TRIM command follows the same steps, except that when you select the objects to trim, you select the portions to trim away.
Mirror
The following illustration comes from a tile project. The walls in this residential bathroom are flattened out to be able to lay out the tile pattern and estimate the number of tiles needed.
You can save a lot of work by taking advantage of the symmetry between the left and right walls. All you need to do is create the tiles on one wall and then mirror the wall across the center of the room.
In the example below, you start the MIRROR command (or enter MI in the Command window), use window selection (1 and 2) to select the geometry on the right wall, press Enter or the Spacebar, and then specify a mirror line (3 and 4) corresponding to the centerline of the bathroom.
Finally, decline the option to "Erase source objects" by pressing Enter or the Spacebar.
Tip: Always look for symmetry to save yourself extra work, even if the symmetry is not 100% identical.
Stretch
You can stretch most geometric objects. This lets you lengthen and shorten parts of your model. For example, this model might be a gasket or the design for a public park.
Use the STRETCH command (or enter S in the Command window) and select the objects with a crossing selection as shown below (1 and 2). The crossing selection is mandatory—only the geometry that is crossed by the crossing selection is stretched. Then click anywhere in the drawing area (3), move the cursor to the right, and enter 50 as the distance. This distance might represent millimeters or feet.
To shorten the model by a specified amount, you'd move your cursor to the left instead.
Fillet
The FILLET command (enter F in the Command window) creates a rounded corner by creating an arc that is tangent to two selected objects. Notice that the fillet is created relative to where you select the objects.
You can create a fillet between most types of geometric objects, including lines, arcs, and polyline segments.
Tip: If you hold down the Shift key when you select the second object, the result trims or extends the selected objects to a sharp corner.
Explode
The EXPLODE command (enter X in the Command window) disassociates a compound object into its component parts. You can explode objects such as polylines, hatches, and blocks (symbols).
After you explode a compound object, you can modify each resulting individual object.
Edit Polylines
You can choose from several useful options when you want to modify a polyline. The PEDIT command (enter PE in the Command window) is located on the drop-down list of the Modify panel.
With this command, you can
- Join two polylines into a single polyline if they share a common endpoint
- Convert lines and arcs into a polyline—simply enter PEDIT and select the line or arc
- Change the width of a polyline
Tip: In some cases, the easiest method to modify a polyline is to explode it, make the modifications, and then turn the objects back into a polyline using the Join option of the PEDIT command.
Grips
Grips are displayed when you select an object without starting a command. Grips are often handy for light editing. For example, the line below accidentally snapped to the wrong endpoint. You can select the misaligned line, click on a grip and then click to specify the correct location.
By default, when you click a grip, you automatically start in **STRETCH** mode as indicated in the Command window. If you want to explore other ways of editing objects with grips, press Enter or the Spacebar to cycle through several other editing modes. Some people perform many editing operations using grips.
By:
Perform operations such as erase, move, and trim on the objects in a drawing.
The most common of these tools are located on the Modify panel of the Home tab. Take a minute to look through them.
Erase
To erase an object, use the ERASE command. You can enter E in the Command window, or click the Erase tool. When you see the cursor change to a square pickbox, click each object that you want to erase, and then press Enter or the Spacebar.
Note: Alternatively, before you enter any command, you can select several objects and then press the Delete key. Experienced users often use this method as well.
Select Multiple Objects
Sometimes you need to select a large number of objects. Instead of selecting each object individually, you can select the objects in an area by clicking an empty location (1), moving your cursor right or left, and then clicking a second time (2).
- With a crossing selection, any objects within or touching the green area are selected.
- With a window selection, only the objects completely contained within the blue area are selected.
The result is called the selection set, which is the set of objects that will be processed by a command.
Tip: You can easily remove objects from the selection set. For example, if you select 42 objects, and two of them should not have been selected, hold down Shift and then select the two that you want to remove. Then, press Enter or the Spacebar, or right click to end the selection process.
Move and Copy
Here's how you would use the COPY command to lay out a row of decorative tiles. Starting with a polyline that represents its shape, you need to make copies that are 1/8" apart.
You click the Copy tool or enter CP in the Command window to start the command. From here, you can choose between two methods, depending on what's more convenient. You will use both these methods frequently.
The Distance Method
The second tile needs to be a total of 9-7/8" + 1/8" = 10" to the right of the original tile. So, you select the tile, press Enter or the Spacebar to end your selection, and click anywhere in the drawing area (1). This point does not have to be located on the tile.
Next, you move your cursor to the right, relying on the polar tracking angle to keep the direction horizontal, and then enter 10 for the distance. Press Enter or the Spacebar a second time to end the command.
The specified distance and a direction from the point (1) is applied to the tile that you selected.
The Two Points Method
Another method, one that you will often use when you don't want to add numbers together, requires two steps. You start the COPY command and select the tile as before, but this time you click the two endpoints as shown. These two points also define a distance and direction.
Next, to add the 1/8" space between the tiles, click the Move tool or enter M in the Command window. The MOVE command is similar to the COPY command. Select the newly copied tile, and press Enter or the Spacebar. As before, click anywhere in the drawing area and move your cursor to the right. Enter 1/8 or .125 for the distance.
Tip: The two points that define the distance and direction don't need to be located on the object that you want to copy or move. You can use two points specified anywhere in your model.
For example, enter the MOVE command. Use a selection method to select the objects in the rectangle (1). Specify a base point (2) and a second point (3) to determine the distance and direction of the move. Press Spacebar or Enter to see the results.
The distance and direction determined by the endpoints at 2 and 3 in the illustration are applied to the rectangle at the right. This is a good way to specify existing distances for moving and copying objects.
Create Multiple Copies
Similarly, you can use the two-points method as a repeating sequence. Let's say that you want to make more copies of the circle at the same horizontal distance. You start the COPY command and select the circle as shown.
Then, using the Center object snap, click the center of circle 1, followed by the center of circle 2, and so on.
For larger numbers of copies, try experimenting with the Array option of the COPY command. For example, here's a linear arrangement of deep foundation piles. From a base point, you specify number of copies and the center-to-center distance.
Offset
Most models include a lot of parallel lines and curves. Creating them is easy and efficient with the OFFSET command. Click the OFFSET tool or enter O in the Command window.
Select the object (1), specify the offset distance, and click to indicate on which side of the original that you want the result (2). Here is an example of offsetting a polyline.
Trim and Extend
A popular technique is to use the OFFSET command in combination with the TRIM and EXTEND commands. Trimming and extending are some of the most commonly used operations. Click the TRIM or MOVE tool or enter TR for TRIM or EX for EXTEND in the Command window.
In the following illustration, let's say you want to extend the lines that represent the steps for this deck. You start the Extend command and select the objects to be extended (near the ends to be extended) and then press Enter or the Spacebar to end the command.
As a result, the lines are extended to the first boundary that they encounter.
If there are multiple objects to extend, you can use faster ways of selecting the objects to extend. For example
- Two-point fence selection. Click an empty location (1) and then click a second location that crosses the objects to be extended (2).
- Freehand selection. Click and drag an empty location (1) to another location (2).
The TRIM command follows the same steps, except that when you select the objects to trim, you select the portions to trim away.
Mirror
The following illustration comes from a tile project. The walls in this residential bathroom are flattened out to be able to lay out the tile pattern and estimate the number of tiles needed.
You can save a lot of work by taking advantage of the symmetry between the left and right walls. All you need to do is create the tiles on one wall and then mirror the wall across the center of the room.
In the example below, you start the MIRROR command (or enter MI in the Command window), use window selection (1 and 2) to select the geometry on the right wall, press Enter or the Spacebar, and then specify a mirror line (3 and 4) corresponding to the centerline of the bathroom.
Finally, decline the option to "Erase source objects" by pressing Enter or the Spacebar.
Tip: Always look for symmetry to save yourself extra work, even if the symmetry is not 100% identical.
Stretch
You can stretch most geometric objects. This lets you lengthen and shorten parts of your model. For example, this model might be a gasket or the design for a public park.
Use the STRETCH command (or enter S in the Command window) and select the objects with a crossing selection as shown below (1 and 2). The crossing selection is mandatory—only the geometry that is crossed by the crossing selection is stretched. Then click anywhere in the drawing area (3), move the cursor to the right, and enter 50 as the distance. This distance might represent millimeters or feet.
To shorten the model by a specified amount, you'd move your cursor to the left instead.
Fillet
The FILLET command (enter F in the Command window) creates a rounded corner by creating an arc that is tangent to two selected objects. Notice that the fillet is created relative to where you select the objects.
You can create a fillet between most types of geometric objects, including lines, arcs, and polyline segments.
Tip: If you hold down the Shift key when you select the second object, the result trims or extends the selected objects to a sharp corner.
Explode
The EXPLODE command (enter X in the Command window) disassociates a compound object into its component parts. You can explode objects such as polylines, hatches, and blocks (symbols).
After you explode a compound object, you can modify each resulting individual object.
Edit Polylines
You can choose from several useful options when you want to modify a polyline. The PEDIT command (enter PE in the Command window) is located on the drop-down list of the Modify panel.
With this command, you can
- Join two polylines into a single polyline if they share a common endpoint
- Convert lines and arcs into a polyline—simply enter PEDIT and select the line or arc
- Change the width of a polyline
Tip: In some cases, the easiest method to modify a polyline is to explode it, make the modifications, and then turn the objects back into a polyline using the Join option of the PEDIT command.
Grips
Grips are displayed when you select an object without starting a command. Grips are often handy for light editing. For example, the line below accidentally snapped to the wrong endpoint. You can select the misaligned line, click on a grip and then click to specify the correct location.
By default, when you click a grip, you automatically start in **STRETCH** mode as indicated in the Command window. If you want to explore other ways of editing objects with grips, press Enter or the Spacebar to cycle through several other editing modes. Some people perform many editing operations using grips.
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By:
Perform editing operations such as erase, move, and trim on the objects in a drawing.
The most common of these tools are located on the Modify panel of the Home tab. Take a minute to look through them.
Erase
To erase an object, use the ERASE command. You can enter E in the Command window, or click the Erase tool. When you see the cursor change to a square pickbox, click each object that you want to erase, and then press Enter or the Spacebar.
Note: Alternatively, before you enter any command, you can select several objects and then press the Delete key. Experienced users often use this method as well.
Select Multiple Objects
Sometimes you need to select a large number of objects. Instead of selecting each object individually, you can select the objects in an area by clicking an empty location (1), moving your cursor right or left, and then clicking a second time (2).
- With a crossing selection, any objects within or touching the green area are selected.
- With a window selection, only the objects completely contained within the blue area are selected.
The result is called the selection set, the set of objects that will be processed by a command.
Tip: You can easily remove objects from the selection set. For example, if you select 42 objects, and two of them should not have been selected, hold down Shift and then select the two that you want to remove. Then, press Enter or the Spacebar, or right click to end the selection process.
Move and Copy
Here's how you would use the COPY command to lay out a row of decorative tiles. Starting with a polyline that represents its shape, you need to make copies that are 1/8" apart.
You click the Copy tool or enter CP in the Command window to start the command. From here, you can choose between two methods, depending on what's more convenient. You will use these two methods frequently.
The Distance Method
The second tile needs to be a total of 9-7/8" + 1/8" = 10" to the right of the original tile. So, you select the tile, press Enter or the Spacebar to end your selection, and click anywhere in the drawing area (1). This point does not have to be located on the tile.
Next, you move your cursor to the right, relying on the polar tracking angle to keep the direction horizontal, and then enter 10 for the distance. Press Enter or the Spacebar a second time to end the command.
The specified distance and a direction from a point (1) is applied to the tile that you selected.
The Two Points Method
Another method, one that you will often use when you don't want to add numbers together, requires two steps. You start the COPY command and select the tile as before, but this time you click the two endpoints as shown. These two points also define a distance and direction.
Next, to add the 1/8" space between the tiles, click the Move tool or enter M in the Command window. The MOVE command is similar to the COPY command. Select the newly copied tile, and press Enter or the Spacebar. As before, click anywhere in the drawing area and move your cursor to the right. Enter 1/8 or .125 for the distance.
Tip: The two points that define the distance and direction don't need to be located on the object that you want to copy. You can use two points specified anywhere in your model.
Create Multiple Copies
You can use the two-points method as a repeating sequence. Let's say that you want to make more copies of the circle at the same horizontal distance. You start the COPY command and select the circle as shown.
Then, using the Center object snap, click the center of circle 1, followed by the center of circle 2, and so on.
For larger numbers of copies, try experimenting with the Array option of the COPY command. For example, here's a linear arrangement of deep foundation piles. From a base point, you specify number of copies and the center-to-center distance.
Offset
Most models include a lot of parallel lines and curves. Creating them is easy and efficient with the OFFSET command. Click the OFFSET tool or enter O in the Command window.
Select the object (1), specify the offset distance, and click to indicate on which side of the original that you want the result (2). Here is an example of offsetting a polyline.
Trim and Extend
A popular technique is to use the OFFSET command in combination with the TRIM and EXTEND commands. In the Command window, you can enter TR for TRIM or EX for EXTEND. Trimming and extending are some of the most commonly used operations.
In the following illustration, you want to extend the lines that represent the steps for this deck. You start the Extend command, select the boundary, and then press Enter or the Spacebar.
Pressing Enter or the Spacebar indicates that you've finished selecting the boundaries, and that you're now ready to select the objects to be extended.
Tip: A faster method is to press Enter or the Spacebar right away instead of selecting any boundary objects. The result is that all objects are available as possible boundaries.
Next, you select the objects to be extended (near the ends to be extended), and then you press Enter or the Spacebar to end the command.
The result is that the lines are extended to the boundary.
The TRIM command follows the same steps, except that when you select the objects to trim, you select the portions to trim away.
Mirror
The following illustration comes from a tile project. The walls in this residential bathroom are flattened out to be able to lay out the tile pattern and estimate the number of tiles needed.
You can save a lot of work by taking advantage of the symmetry between the left and right walls. All you need to do is create the tiles on one wall and then mirror the wall across the center of the room.
In the example below, you start the MIRROR command (or enter MI in the Command window), use window selection (1 and 2) to select the geometry on the right wall, press Enter or the Spacebar, and then specify a mirror line (3 and 4) corresponding to the centerline of the bathroom.
Finally, decline the option to "Erase source objects" by pressing Enter or the Spacebar.
Tip: Always look for symmetry to save yourself extra work, even if the symmetry is not 100% identical.
Stretch
You can stretch most geometric objects. This lets you lengthen and shorten parts of your model. For example, this model might be a gasket or the design for a public park.
Use the STRETCH command (or enter S in the Command window) and select the objects with a crossing selection as shown below (1 and 2). The crossing selection is mandatory—only the geometry that is crossed by the crossing selection is stretched. Then click anywhere in the drawing area (3), move the cursor to the right, and enter 50 as the distance. This distance might represent millimeters or feet.
To shorten the model by a specified amount, you'd move your cursor to the left instead.
Fillet
The FILLET command (enter F in the Command window) creates a rounded corner by creating an arc that is tangent to two selected objects. Notice that the fillet is created relative to where you select the objects.
You can create a fillet between most types of geometric objects, including lines, arcs, and polyline segments.
Tip: If you specify 0 (zero) as the radius of the fillet (imagine a circle shrinking to a radius of 0), the result trims or extends the selected objects to a sharp corner.
Explode
The EXPLODE command (enter X in the Command window) disassociates a compound object into its component parts. You can explode objects such as polylines, hatches, and blocks (symbols).
After you explode a compound object, you can modify each resulting individual object.
Edit Polylines
You can choose from several useful options when you want to modify a polyline. The PEDIT command (enter PE in the Command window) is located on the drop-down list of the Modify panel.
With this command, you can
- Join two polylines into a single polyline if they share a common endpoint
- Convert lines and arcs into a polyline—simply enter PEDIT and select the line or arc
- Change the width of a polyline
Tip: In some cases, the easiest method to modify a polyline is to explode it, make the modifications, and then turn the objects back into a polyline using the Join option of the PEDIT command.
Grips
Grips are displayed when you select an object without starting a command. Grips are often handy for light editing. For example, the line below accidentally snapped to the wrong endpoint. You can select the misaligned line, click on a grip and then click to specify the correct location.
By default, when you click a grip, you automatically start in **STRETCH** mode as indicated in the Command window. If you want to explore other ways of editing objects with grips, press Enter or the Spacebar to cycle through several other editing modes. Some people perform most editing operations using grips.
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