To all cad genius or to all mathematicians out there...HELP

[whel_13]

I'm using isometric drawing and i'm having problems to trim/cut non coplanar lines..

Please open your autocad (Im using autocad lt 2000). Follow the following:
Click new
Select start from scratch
Select metric
then click ok.

<you should be on a new drawing right now>

on the command line type
DDVPOINT
<select from X axis 315, XY plane 30> <you should be on "Absolute to WCS>
then click OK
from drop down. select tools
then drafting settings
then on the Snap and Grid click on ISometric snap

on the command line type
rectang <then enter>
Specify first corner: <type 0,0> then enter
Specify other corner: <type 76.2,76.2> then enter

on the command line again type
L <then enter>
line specify first point: <type 0,76.2>
specify next point or (undo): <type @0,0,-90>
then press enter

NOw, any body who could help me how could i trim/cut the "z" line (vertical) to make is looks like a square with line having end poin on each opposite corner.
NOTE THAT THE VERTICAL LINE IS NON COPLANAR...

thanks in advance guysssssssss............ :lol:

[fuccaro]

Playing with your line I find a solution but it is not a simple one. Do you want to see it?
Type VPOINT
Current view direction: VIEWDIR=0.6124,-0.6124,0.5000
Press F2 and in the text window select the coordinates 0.6124,-0.6124,0.5000 and press CTRL+C
LINE
From point: click on the command line and press CTRL+V to bring the saved coordinates
To point: 0,0,0
To point: Enter
MOVE
Select objects: L
1 found. Select objects: Enter
Base point: CTRL+V second point: click on the lower corner of the rectangle (76.0,0)
SCALE
Select objects: L
Select objects: Enter
Base point: @
Scale factor: 222
VPOINT
.... specify a view point... : 1,1,1
LINE
From point: INT of <click on the intersection of the last drawed line and the vertical one>
To point: 0,0,0
To point: Enter
ERASE select objects: <select the lines exceding the intersection point
VPOINT
.... specify a view point...: CTRL+V
Before of ewery CTRL+V you must click in the command line!
It works?

[Flores]

I am unfamiliar with ACAD LT, but maybe the commands are the same as in ACAD 2K. The quick way in ACAD 2K is to first set up your view and your draw your objects as stated. Next, after starting the "trim" command, just hit "enter" button. This selects everything in drawing to be used as a trim line. Now just pick the lines of the rectangle. It will not matter if it isn't coplaner when you use this or the next method.
The second method involves picking the line to trim. You will get the following at the command line:
"Select object to trim or shift-select to extend or [Project/Edge/Undo]"
Choose "p" for project, then you will get this at the command line:
"Enter a projection option [None/Ucs/View] <Ucs>"
Choose "v" for view. Now select objects to be trimmed.
Hopefully one of these will work in LT.

Flores

[whel_13]

Command: vpoint

Current view direction: VIEWDIR=0.6124,-0.6124,0.5000
Specify a view point or [Rotate] <display compass and tripod>: line

Invalid input. Try again.

Thats the message after ctrl+C.

IF i press esc after the ctrl+V then

Command: vpoint

Current view direction: VIEWDIR=0.6124,-0.6124,0.5000 <ctrl+V>
Specify a view point or [Rotate] <display compass and tripod>: *Cancel* <esc>

Command: line
Specify first point: 0.6124,-0.6124,0.5000

Specify next point or [Undo]: 0,0,0

Specify next point or [Undo]: <enter>

CAN'T SEE THE OBJECT L..

PLEASE HELP.. THANKS

[whel_13]

flores:: the second method works..

thanks you so much..

I can now use that TIP of yours on my ISOMETRIC DRAWINGS.......
:lol:

thanks guys..........

[whel_13]

Array, offset command in isometric projection/drawing.

Hi guys! It’s me again J. Is there a command in Autocad LT 2002 for array, offset in isometric projection / drawing?

Here’s the set up.
New drawing.
On the command line type
DDVPOINT
<select from X axis 315, XY plane 30> <you should be on "Absolute to WCS>
then click OK
from drop down. select tools
then drafting settings
then on the Snap and Grid click on ISometric snap

Command type
Line
First point : <type 0,0>
Second point : <@0,70>
Next poin: <enter>

Now, I want to have 5 parallel lines with the same distance with each other and their end points along the “Z-axis” but I can’t use the array or offset command..Please help..

[fuccaro]

COPY
select objects: L <Ent>
select.... <Ent>
Base point or deplacement: 0,0,15 <ent>
Specify second point ... <ent>
hit Enter again to repeat the COPY command.
Select objects: L <ent>
select... <ent>
Specify base point or displacement, or [Multiple]: M <ent>
Specify base point Click on the end of the first line (at 0,0,0)
Specify second point of displacement: click on the end of the other line (at 0,0,15, in this example)
A new line is created.
Specify second point of displacement: click the end of the line created on the previous step
....
Keep clicking until you have enought lines.

[whel_13]

thanks for your help........... :D