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SE2D Drawing Philosopy

I'm trying to figure it out. So, far it seems as an extension to paper and pencil Drafting and not Computer Aided Design.

Take a simple example:

Draw a square. Well it really isn't a square, it's 4 lines.
Now draw a circle inside the square.

I thought that I could select all 4 lines and the use Connect and the object would become a square based on what i know. Nope. Nadda.

Then I figure I could draw a circle and place it inside the square.

Then select both objects and "ALIGN" them so that they are concentric. Now, I'm looking for a command to GROUP them and the only thing close is a "rigid Set"

If a rigid set was 2 circles, then when I select them, I would expect BOTH circles to be encompassed in a bounding box like TEXT would be. The center of the object is really the centroid of the object.

e.g
circle--------c---------circle

Again, no such animal.

So, I don't see group/ungrpup. The rigid relationship doesn't appear to be a Force something to happen, but rather force an existing relationship.

I don't see ALIGHT left/ Align right or distribute type of commands.

If I have to use construction lines, that's OLD school.

If I want to center 4 TEXT boxes along a single line, I should be able to do that with one command. e.g lock the line and then center the text box on the line. If I wanted to equally space them,I would DISTRIBUTE them vertically or horizontallly.

I don't see a command for LINEAR DUPLICATE for say five 10 mm circles 12 mm apart.

If I have to use construction lines, then this program is not much better than an Etch-a-Sketch.

Let's say I made a specific sized text box (1 cm x 5cm) and used center properties and put in some test text.

Now I wanted to make 5 of them every 8 cm.

Now I could add my Text in each box.

Now suppose I didn't like 8 cm and wanted then every 10 cm? What do I do?

Duplicate, duplicates stuff right on top of the object, So, far i don't find that useful. Some packages always put it at the center of the workspace, other's a little offset.

I can't seem to move objects using the arrow keys to "nudge" them into place while seeing co-ordinates or other info in which I could just type in a number.

The "properties" of an object don't even tell you the object is part of a ridgid set or group.

Is the drawing philosophy like hand drafting?

What am I missing?
1 REPLY

Re: SE2D Drawing Philosopy

Ron,
I'll try to offer some tips.
Do you have Maintain Relationships and Relationship Handles enabled?
Do you understand the concept behind constraints?
When you draw a rectangle, you are placing 4 lines.
However, if Maintain Relationships is enabled,
the four lines are endpoint connected.
If you draw the rectangle with horizontal and vertical sides,
the lines of the rectangle will have horizontal/vertical constraints.
These constraints keep the orientation of the lines horizontal/vertical.
Because the lines are endpoint connected, when you drag a line,
the connected lines stay connected and move along.
If you want a rectangle to be a square,
place an equal constraint between two adjacent edges of the rectangle.
Place a dimension on one of the lines and change the dimension to adjust the
size of the square.
You do not have to draw geometry the exact size as you place it.
Draw the basic shape. Then drive the precision with dimensions.
You can draw a circle inside of a square and align them.
Use horizontal/vertical constraints between the midpoints of two lines and
the circle center.
We do have groups. The command is on the drop list under blocks.
All a group does is to collect geometry under a single owner.
Select will find all geometry in the group at one time.
Groups do not lock the geometry within the group in relation to other
geometry in the group.
For your circle/circle problem, Create a block.
A block contains ceometry and has its own placemnt (origin) point.
There are pattern commands under the drop list on Mirror.
If you want a copy use Move with copy enabled.
Group is Under Block.
Why would you want to nudge something when you can precisely drive it with a
dimension.
I believe what you are missing is the notion of associativity.
This is not a dumb drawing package.
You don't have to place geometry at an exact size.
That is old school as you say.
You draw the basic shape.
Then you add dimensions to control or drive the size.
Again, make sure you have Maintain Relationsips enabled.
You can even define a dimension as a formula of another dimension.
Use your square and circle example.
Draw the rectangle.
Set the sides equal.
Place one dimension to drive the size of the square.
Draw a circle inside the square.
It doesn't have to be drawn exactly un the center.
Place horizontal/vertical constraints to put the circle in the center off
the square.
It will be fixed at that location. Move the square, the circle moves with
it.
Set the circle diameter to 1/2 the square width.
Place a diameter dimension on the circle.
Double click on the diameter dimension to show the formula for the
dimension.
Click on the dimension for the size of the square.
This puts the name of the dimension in the formula. Follow the name with
'/2'. (no quotes)
Press enter to accept the formula. The ciecle is 1/2 the size of the square.
Change the size of the square and the circle changes.
Regards,
Rick B.

"ron.dozier@gmail.com"

wrote in message
news:ron.doziergmail.com.4xtwdz@noreply.bbs.industrysoftware.automation.siemens.com...
>
> I'm trying to figure it out. So, far it seems as an extension to paper
> and pencil Drafting and not Computer Aided Design.
>
> Take a simple example:
>
> Draw a square. Well it really isn't a square, it's 4 lines.
> Now draw a circle inside the square.
>
> I thought that I could select all 4 lines and the use Connect and the
> object would become a square based on what i know. Nope. Nadda.
>
> Then I figure I could draw a circle and place it inside the square.
>
> Then select both objects and "ALIGN" them so that they are concentric.
> Now, I'm looking for a command to GROUP them and the only thing close is
> a "rigid Set"
>
> If a rigid set was 2 circles, then when I select them, I would expect
> BOTH circles to be encompassed in a bounding box like TEXT would be.
> The center of the object is really the centroid of the object.
>
> e.g
> circle--------c---------circle
>
> Again, no such animal.
>
> So, I don't see group/ungrpup. The rigid relationship doesn't appear to
> be a Force something to happen, but rather force an existing
> relationship.
>
> I don't see ALIGHT left/ Align right or distribute type of commands.
>
> If I have to use construction lines, that's OLD school.
>
> If I want to center 4 TEXT boxes along a single line, I should be able
> to do that with one command. e.g lock the line and then center the text
> box on the line. If I wanted to equally space them,I would DISTRIBUTE
> them vertically or horizontallly.
>
> I don't see a command for LINEAR DUPLICATE for say five 10 mm circles
> 12 mm apart.
>
> If I have to use construction lines, then this program is not much
> better than an Etch-a-Sketch.
>
> Let's say I made a specific sized text box (1 cm x 5cm) and used center
> properties and put in some test text.
>
> Now I wanted to make 5 of them every 8 cm.
>
> Now I could add my Text in each box.
>
> Now suppose I didn't like 8 cm and wanted then every 10 cm? What do I
> do?
>
> Duplicate, duplicates stuff right on top of the object, So, far i don't
> find that useful. Some packages always put it at the center of the
> workspace, other's a little offset.
>
> I can't seem to move objects using the arrow keys to "nudge" them into
> place while seeing co-ordinates or other info in which I could just type
> in a number.
>
> The "properties" of an object don't even tell you the object is part of
> a ridgid set or group.
>
> Is the drawing philosophy like hand drafting?
>
> What am I missing?
>
>
> --
> ron.dozier@gmail.com
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