2D Entities: Double and Multi-Lines Video Lecture | TurboCAD: A Complete Course - Design Softwares

in this video we will be going over
double line and multi line tools start
by right-clicking a blank spot in the
workspace this will bring up the
customize dialog check double line
double line modify and multi line then
click close depending on where these
toolbars appear you may need to move
them out of the way so we can see the
drawing area there we go
both the double line and multi line
tools are very similar to the tools in a
line toolbar that we went over in a
previous video the big difference is in
their properties so let's start by
right-clicking the double line tool to
bring up properties now click on double
line notice the different properties to
the right side of the dialogue the value
for separation defines the distance
between the two lines let's change it to
two reference refers to how geometry is
placed relative to your mouse clicks for
example if you choose Center the double
line would be constructed to either side
of the data you enter for now let's
leave it at center endcaps plays line
segments on either end of the double
line to give it the appearance of a
closed entity let's check both start and
end before we hit okay
let's change pen and brush properties
under pen select 0.05 for the line
weight then under brush select solid as
the pattern red is the pattern color
then hit OK now back to the drawing area
choose the double line tool and draw two
lines of about 40 inches in length then
draw a third line that intersects them
both notice how the order in which the
lines are drawn affect how they lay on
top of each other this is because of the
draw order you can change the draw order
by selecting an entity then choosing a
command from the draw order submenu of
the Tools menu in this case I want to
place the selected entity behind the
other two so I will choose sent to back
the double line polyline tool draws a
double line by sequential mouse clicks
or data entry go ahead and draw a double
line polyline near the three lines we
have already drawn
remember if you want to draw a straight
line hold down the shift-key to force
orthogonal and if you make a mistake you
can use the one step back option
just like the regular polygon tool the
double line polygon is drawn by defining
the radius of an invisible circle let's
draw one near our other double lines
with a double polygon selected click
once to define the center then tab into
the inspector bar enter 8 for sides an
angle of 0 and a radius of 7 then hit
enter to complete the operation we now
have a double line octagon let's take a
closer look at this octagon by selecting
it then hitting alt backspace on your
keyboard this will zoom to the extents
of the selected entity now grab the
bounding box on the right side and bring
it towards the center of the entity
notice how it appears we are squishing
the entity but when we click to finalize
the resize operation the distance
between the two lines will return to two
inches similar to the double line
polyline the irregular double line
polygon constructs a closed double line
entity with a series of mouse clicks
after zooming out a bit try drawing a
polygon that encloses the rest of our
drawing try both using mouse clicks and
entering values for length and angle in
the inspector bar just like the polyline
you can choose the one step back option
if you make a mistake the double
rectangle and double rotated rectangle
behave the same as their single line
counterparts before trying them out
let's open up properties and change the
reference to left now go ahead and draw
a rectangle
notice how the mouse clicks now define
the inner dimensions of the double line
let's change the reference to right to
see how that works now try using the
double line rotated rectangle as
expected the mouse clicks now define the
outer dimensions of the double line the
next two tools use existing geometry to
create the double lines
let's try both of them out for
perpendicular double line first select
the line you would like the double line
to be drawn perpendicular to then click
to define the position of the line now
tap into the inspector bar and enter a
length of let's say 14 for the parallel
double line you first
the entity you would like the new double
line to be parallel to and if you would
like the parallel line to be a different
length you can turn off keep length one
advantage of using the double lines is
how we are able to modify them all of
the standard modify tools work on double
lines while I will go over them in
detail in another video let's take a
quick look at two of my favorites now I
can round the corners of the surrounding
a regular polygon with the Filat tool or
do a corner trim with the me two lines
tool notice how both the lines are
trimmed and extended correctly to create
an L intersection for X and T
intersections there are special tools
let's go over the X intersection first
remember those first three lines we drew
let's select them all by dragging a
green fence from right to left making
sure the fence touches each double line
now hit alt backspace on your keyboard
to zoom to the extents of your selection
then hit escape to deselect now choose
the X meat tool and select one of the
intersecting double lines after
selecting both lines you'll notice that
the intersection is now cleaned up with
the lines continuous around the fill to
create a T intersection you will first
want to select the line segment opposite
the segment that you would like to be
removed then selecting the double line
you would like to trim to notice that
the intersection is not clean this is
because of the end cap we can remove
this by selecting the recently trimmed
double line and turning off either start
or end cap now it's time to take a look
at the multi lines so let's select
everything on-screen and delete it now
choose the multi line rectangle and draw
a 10 by 10 rectangle
let's zoom to extents and then back up
one or two zoom levels
okay now let's take a look at this
rectangles properties a quick way to an
entity's properties is to double click
it let's take a look at line elements
notice that the multi line is currently
made up of three line elements one down
the center and an additional line offset
a quarter inch from each side each of
these line elements can be changed
individually let's change the color of
each you do so by selecting the line
elements offset value then choosing a
different color from the drop down above
I will choose blue red and green then
hit OK looks like the line color of each
element has changed let's go back into
properties we can add a new line element
by clicking add notice the new line
element will have an offset of zero
let's change it to 0.5 and give it a
dashed line pattern now let's add
another line element give it an offset
of negative 0.5 change the pattern to
border and the color to coral and click
OK there we go our multi line now has
five elements what would happen if this
rectangle was a drastically larger size
well let's find out
select the rectangle then tab into the
inspector bar input 10 for scale X and
10 for scale Y then hit enter now soom 2
extends to fit the rectangle back on
screen the multi-line now appears to be
a confusing mass we can fix this by
going into multi-line properties and
changing the offset scale to 10 there we
go
that looks much better let's go ahead
and delete the rectangle then hit the
zoom to extents button to return the
camera to the default zoom level
now choose the multi-line polygon and
draw a couple line segments notice that
all the line segments are black and
solid this is because the changes we
made previously were to an entity's
properties and not the tool properties
let's take a closer look at tool
properties while we examine the end cap
and joint properties of the multi-line
go ahead and select anything you now
have on screen and delete it now
right-click the multi-line polyline tool
and go to general properties here we are
going to create a property value prease
a property value presets are specially
useful when dealing with entities with
many properties such as multi lines
click your mouse near normal multi lines
and replace normal multi lines with the
text blue round cap then click new now
go to brush properties and give the
multi line a solid pattern and a pattern
color of blue now go to start cap
properties for multi-line caps there are
several options let's choose outer arc
for both start and end caps now go to
joint properties and click show this
will place a line segment between the
multi line elements at each corner now
click OK and start drawing away you can
switch between blue round cap and normal
multi lines in the drop down found in
the standard toolbar go ahead and select
the single Multi line tool and choose
normal multi lines from the standard
toolbar
now draw two lines that intersect each
other now how do we go about creating a
t-intersection notice that both the T
and X meet tools are grayed out that is
because they only work on double lines
and there are no double lines present in
the drawing well we can use the trim
tool to get partway there go ahead and
choose object trim from the right side
toolbar now select the line you would
like to use as the cutting edge then the
segment you would like to be removed to
finish cleaning up the intersection we
will need to select both lines and
explode them let's start by cleaning up
the centre line with the trim tool now
we can clean up the outer lines with the
trim and meet two lines tools
and that's about it for this video we
went over the double and multi-line
tools and even dabbled a bit in modify
tools and property presets please
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