MonoGRAF. Draughting program

MonoGRAF Views and Windows

As MonoGRAF is an interactive graphic system all actions on graphic entities (primitives, groups, layers) have immediate visual effect on the image, displayed on the graphic screen. Parallelly to the complete visual feedback for all user actions, the system provides a powerful windowing facility. You can focus on certain important parts of the drawing in separate windows which can be moved over the drawing space as desired. You can control the way drawings are viewed through the following options:

View menu


Zoom

The "zoom" function selects a new window with a new magnification. The zoom function lets you increase or decrease the apparent size of the objects you are viewing, although their actual size remains constant. After you select the command you are prompted to choose the zoom type from a pop-up menu:
  • window - prompts for two diagonal points of the new window;
  • left corner - prompts for the lower left corner of the new window and the scale factor;
  • center - prompts for the center point of the new window and the scale factor;
  • right corner - prompts for the upper right corner of the new window and the scale factor;
  • pan - invokes the "pan" function;
  • select view - invokes the "select view" function;
  • max view - display a maximum enlarged view showing all existing entities;
  • last - the previous window is displayed.
Note that the zoom command is available on the control menu as well as on the windows submenu. You may select the zoom function from the control menu at any time, even while any other function is active. You may save the current view for future reference with the "save view" function. The effect of the "zoom" function is shown in the following figure.

Zoom

Zoom


Pan

The "pan" function moves the window at the current magnification. It lets you view different portions of the drawing without changing the magnification. In the result of the net effect, objects that were off screen are now visible, while others that were on screen are now invisible. The function prompts you to indicate the displacement of the new window by two points. Only the relative position of the two points is important. The effect of the "pan" function is shown in the following figure.

Pan

Pan



Select view

The "select view" function selects a previously saved view. You are prompted to select one of the named views from a pop-up menu containing all previously saved views (with the "save view" function) and the initial drawing limits view, indicated by the original drawing name.

Save view

The "save view" function saves the current view (window) under the specified name. You are prompted to enter the name of the view. The view name must be up to 16 characters. You may display the saved view later on and continue your editing after you select it through the "select view" function.

Show slide

The "show slide" function shows a previously saved slide in a specify window. You are prompted to select one of the slides from a pop-up menu containing all slides available in the current directory. After the choice of a slide you are prompted to enter two points which determines the window area for the slide. If the points coincide, the slide is displayed in the whole drawing area of the screen. If you want to change the current directory you can do this by choosing the "params" function from the control menu and change the parameter "new directory".

It is important to note that a slide can only be displayed. No editing is possible for the slide. It is highly recommended to issue a "regen" command after the execution of the current one, so that the most up-to-date view of the current drawing will be displayed.

Save slide

The "save slide" function saves the content of the current screen in a special file for quick display with the "show slide" function. You are prompted to enter the name of the slide. The slide is saved on a disk for future display with the "show slide" function.

Regen

The "regen" function redraws the current view of the drawing.

Coordinate axes

The "coord axes" function is switches on/off the screen coordinate axes. This function marks the measure units length on the screen and helps you have a better idea of your drawing.

Drawing limits

The drawing limits determine the coordinate intervals valid for the coordinates of the graphic entities in the drawing. Entities, whose coordinates are not within the limits specified are not drawn on the plotter. The drawing limits are specified when you start working on a new drawing. Sometimes you may need to change the drawing limits when work on a drawing is under way. The "drawing limits" function changes the drawing limits of the drawing. You are prompted to enter the new drawing limits. The screen is redrawn to the new drawing limits. The effect of the "drawing limits" function is shown in the following figure:

Change of drawing limits

Change of drawing limits



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