You need to define several new functions in this lesson. Rather than present you
with details on all aspects of the new code, this lesson presents an overview and
points out the concepts behind the code. At the end of the lesson, you will have all
the source code necessary to create a garden path application identical to the sample
program you ran in Lesson 1.
Begin by loading the project as it existed at the end of Lesson 6.
Two obvious pieces of work remain to be done in the garden path application:
You also need to consider how to handle the global variables in your program. Often,
it is desirable to have global variables retain a value throughout an AutoCAD drawing
session. In the case of reactors, however, this is not the case. To illustrate this,
imagine a user of your garden path application has drawn several garden paths in a
single drawing. After doing this, the user erases them, first one at a time, then
two at a time, and so on, until all but one path is erased.
Lesson 5 introduced a global variable *reactorsToRemove*, responsible for storing pointers to the reactors for the polylines about to be erased.
When *reactorsToRemove* is declared in gp:outline-erased, the event lets you know the polyline is about to be erased. The polyline is not
actually removed until the gp:command-ended event fires.
The first time the user deletes a polyline, things work just as you would expect.
In gp:outline-erased, you store a pointer to the reactor. When gp:command-ended fires, you remove the tiles associated with the polyline to which the reactor is
attached, and all is well. Then, the user decides to erase two paths. As a result,
your application will get two calls to gp:outline-erased, one for each polyline about to be erased. There are two potential problems you must
anticipate:
If you do not reinitialize the global variable or use the correct data structure (in
this case, a list), you will get unexpected behavior. In the case of reactors, unexpected
behavior can be fatal to your AutoCAD session.
Here is the chain of events that needs to occur for users to erase two garden paths
with a single erase command. Note how global variables are handled:
Your application gets a callback to gp:outline-erased for one of the polylines. Add its reactor pointer to the null global, *reactorsToRemove*.
Your application gets a callback to gp:outline-erased for the second of the polylines. Append its reactor pointer to the *reactorsToRemove* global that already contains the first reactor pointer.
In addition to the *reactorsToRemove* global, your application also includes a *polyToChange* global, which stores a pointer to any polyline that will be modified. Two additional
global variables for the application will be introduced later in this lesson.
>Planning the Overall Reactor Process. Help. Applies to AutoCAD 2015, AutoCAD Architecture 2015, AutoCAD Civil 3D 2015, AutoCAD Electrical 2015, …Reactor Oversight Process (ROP) is a regulatory framework that includes licensee … Strategic Plan and is used to evaluate the overall success of the ROP.power plant accident at Three Mile Island … onsite preparedness and has overall authority for both onsite and offsite emergency … Reactor Oversight Process, the NRC reviews licensees' emergency planning …… NRC finalizes advanced reactor action plan to optimize tight … reactor developers are expected to enter the design licence process … "If there is a request for additional time, that does add-on to the overall schedule," she said.… To assist in the planning of this process, engineers and designers at … P and R reactors at SRS improved the overall process by saving the …plan an experimental program. … Are you sure you are not losing sight of the overall objectives and other … a variable gets incorrectly classified as insignificant to the process or ignored and as a … be used to determine the rate law of a gas-phase reaction is from 1 to 100 atm, …
بنده سیامک دوستداری فارغ التحصیل رشته مکانیک سنگ از دانشگاه صنعتی اصفهان هستم، و در این وبسایت آموزش های مربوط به نحوه برنامه نویسی در اتوکد و هچنین آموزش تصویری دستورات اتوکد را قرار خواهم داد.
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