- [Instructor] Now I wanna talk about project and intersect.
Again, under the Curve tab we have Project
and the way this works, pretty straight forward,
you can select curves and or points,
so you can actually project points.
I'm gonna pick this curve.
What do I wanna project to?
I wanna project let's say up to this surface.
Now, based off of my projection direction
I can determine which way I wanna go.
So if I just say Face Normal
you notice all the direction stuff goes away.
So now this curve is projecting
along the normals of that face.
I'm gonna create that and then I'm gonna come back
and do the exact same thing.
I'm gonna project this curve to that surface
but this time I'm gonna change it to along a vector.
What's the vector?
I'll just use my vector constructor right here,
pick that as my Z and you'll notice
that there is a difference.
The curve that I just projected,
this is along a vector direction.
So based off of that vector, it just shoots it straight up,
lays it down on that surface.
Now, I'm gonna come back in and show you,
I'm gonna hold the Shift key down,
I'm gonna deselect that surface.
This time I'm gonna project that curve onto that surface.
You'll see here, as it does its projection,
it's starting at that curve and going straight up.
You'll notice it doesn't project down.
And the reason why it doesn't is
because I have a projection option right over here.
I have it set to None.
If I say Project Both Sides,
you'll notice that it projects it down
'til it gets to the end of the curve,
there's nothing there for it to project,
so it just stops there.
Other options within your projection is
if I have a series of curves
that I'm projecting onto a surface,
there may be tiny little gaps between those curves,
this is kinda nice where you can say
Create Curves to Bridge Gaps.
So if you have a lot of faces, a lot of curves,
a lot of surfaces, you can turn that on
and it'll close off those little gaps.
So if you need to use that curve
for something else in the future,
you have a nice continuous chain
and you don't have to worry about trying to go back
and fix those little errors.
Often times, using a projection does build in
a lot of potential tolerance deviations.
Right, we have our tolerance for our projection,
but tools like the Project gobbles up those tolerances.
So if you have a string of those curves,
you may end up with a gap issue, so great little tool.
Alright, let me shut that, select OK.
Now the next tool I wanna talk about,
let me go ahead and hide these,
hide that and hide that,
is what's called Intersection Curve.
Intersection Curve is pretty straight forward,
just that, I wanna intersect let's say two surfaces.
I pick my one surface, come down here,
pick my next surface, and you can see
there's my curve intersecting between those two.
I also can use, let me go to Intersect once again,
I also can use datum planes.
So I just come down here, I can pick a plane.
You'll notice there's my intersection.
I can pick two planes, I can pick three planes.
I can pick as many planes as I want or additional surfaces
and it'll do the intersection through all of those elements.
So very powerful.
And if I select OK,
you can see I have my two curves
through those two datums and that surface.
So Intersect Curve, great tool.
Again, you do have a distant tolerance,
as with pretty much all of our surfacing tools.
This Intersection Curve, very stable.
I use them a lot, especially if I need to
draw a sketch maybe on a plane,
I do have the propensity to do an extrude
and do intersection curves,
even though I can do a projection along a normal.
It's just a preference of mine that I like to use,
I guess old habit.
If you're doing a lot of projections,
a lot of intersections, just again,
get familiar with the Distance Tolerance here.
I try not to adjust it,
don't necessarily want you to adjust it,
but on occasion, again, if it's to close a gap or whatever,
you may have to play around with it.