One way is with OBJECT SNAP TRACKING. >Learn about it.< Also >here<. The F11 key toggles it on/off.
@jaimuthu wrote:
i want draw section in pick two points on plan view than draw the line with lvl difference .
So your sample drawing did not represent what you want to do, but your level difference is in the Z direction?
Use >COORDINATE FILTERS<:
LINE [or PLINE?] command.
Type .XY [note the preceding period]
It will say "of"
Pick P1 and it will get only the X and Y coordinates from there
It will say "(need Z): "
Give it your elevation for that end [12 in your example].
Repeat the procedure for P2, giving it 12.5 at the end.
@jaimuthu wrote:
i have many points i want lisp code for this one i pick two points and enter level of each point drawthe line exampel:
attached in drawing
It's still not clear to me whether your "level" means in the Y direction as in your first drawing, or the Z direction. And if "attached in drawing" here means you meant to attach another drawing, it didn't attach. [You cannot attach things in a reply to an email notification, but you must come to the website.] If it still refers to the first one, have you tried the Osnap Tracking suggestion?
If you're doing it in plan view and your section view is just the tilted-over illustration of the result that would be up at the elevations in the plan, you can do that with Coordinate Filters as already suggested. [Red is you, green is AutoCAD prompts]:
LINE
.XY
of {pick the red P1}
(need Z): 235
.XY
of {pick the red P2 or the yellow P1 [same XY]}
(need Z): 235
.XY
of {pick again the yellow P1 or the red P2 [same XY]}
(need Z): 225
.XY
of {pick the yellow P2 or the green P1 [same XY]}
(need Z): 225
.XY
of {pick again the green P1 or the yellow P2 [same XY]}
(need Z): 235
.XY
of {pick the green P2}
(need Z): 235
{Enter}
If you're drawing it into the Z direction like that when in XY plan view, you can't use PLINE [which can only be flat in the current drawing plane] but must use LINE [which can draw into the third dimension], or, if you think it better, 3DPOLY.
If you actually want to draw it in already-tilted-over section view, so the levels are Y-direction differences rather than Z-direction, then seriously, learn about Object Snap Tracking [Message 2].
Reset the line work to match the RL Z value.
Add a dummy line to inside of the kerb at 0.00001 away but at next height pavement level. Do same other side, drag a line square over and get all 6 lines or more then can work out all the widths and height changes.
Just a comment your top of kerb height label is in the wrong spot, when referring to a kerb the height is always at the rear not middle, you imply a slope of 10mm if flat top yes can be labelled anywhere, spent to many years doing road design.
You can make in a lisp with some predefined kerb values so pick outside line points and kerb rl linework is adjusted to suit.
Thinking more would use the blocks with correct kerb Rl and offsets. To make section. They are all blocks. Add a block "Crown"
