Rhino3d for Mac Tutorial Series - Curated by Simply Rhino to help you get started and learn Rhino on the Mac platform.
This is the video transcript, published alongside the video, to further support your Rhino learning experience.
Hi, I’m Sean from Simply Rhino and I’d like to welcome you to the third tutorial in our Getting Started with Mac Series. In this tutorial we will be looking at some modelling aids.
So let’s start with looking at something called tab constraint or also known as direction lock. Now I’ve got two surfaces here, now if I was to just draw a line, so if I just click on the polyline tool here, now if I start by finding the end point here and left click. Now you’ll see that as I place my cursor over the bottom left hand corner of this green surface, I’ve got the end tool tip appear meaning that if I make a left click, it’s going to place that line precisely at that location. But if I just tap the tab key directly above the shift on the left hand side of my keyboard, the line turns white. That’s known as an elevator line. What Rhino has done, is that it has constrained the line so that it passes precisely through that end point. Now I’m yet to decide how long this line will be. I’ve got small crosshairs on the screen which means that I can make a left click, also I can type a value in to the keypad. Say for example a type 100, it will draw that line 100 long.
Now of course this would work, it doesn’t necessarily have to be passing through an object snap. If I just place my cursor over here on the left hand side and tap on the tab key, again you can see unconstrained. Now this of course will work within the 3D space as well. Let’s just delete that.
Now let’s have a look at smart track. Now you can see we can turn it on up here in the interface and at the bottom on the left hand corner here too. So I’m just going to activate smart track. Now smart track works in conjunction with object snaps. It also works in conjunction with the Ortho, whatever the orthogonal setting is. Now if I was to for example try to place a point object at the apparent intersection of the lower edge of this gold surface here, if you can imagine that there was a line that continued through the lower edge of that surface horizontally here, and another line was dropping vertically from the edge of this surface here, there would be an apparent intersection round about here. Now what we don’t want to do is use sacrificial geometry. We don’t want to draw a line across here to here to find the intersection. Now smart track will allow us to find points, object snaps on existing objects. Now let’s place an object just here using smart track. First of all I come up to my toolbar here and I’m going to press on my single point. Now in bold here it’s asking me for location of point object. Now note that I’ve got just the end object snap point on. I place my cursor over the bottom left hand corner here. There’s a solid white circle, kind of blue circle too over the top of the bottom left hand corner of that gold surface, and you can see as I’ve just dropped down with my cursor, there is that horizontal temporary white reference line appearing and that angle of that line will coincide with whatever your Ortho setting is. Now let’s move over to where this... I need to move over to the top left hand corner here and place a blue circle over the bottom left hand corner and find the apparent intersection. Now you can see that Rhino now, we can see the tool tip, intersection. Note, before I just make a left click and place that point object there, that if I run over this previous point, Rhino will deselect it and it will no longer place that vertical temporary reference line. So just by floating your cursor over a object snap or coming back to it, will deselect it. So select it and now I find intersection, make a left click. So let’s delete that and what I’m going to do now, I’m just going to have a look at two modelling elements, planer and project.
So I’m just going to come over here so I can turn on, I’m just going to toggle between my layer one and layer two. I’m going to turn off layer one and turn on layer two and get rid of these panels. Now I’m going to go to four views and type in ZEA, that’s an alias for zoom extends all viewports. You can see that we’ve got three surfaces at three different heights. Let’s just shade that. Now, first of all let’s have a look at project. Before we actually turn the project modelling aid on which is down here at the bottom of my object snaps here, the reason why we find it within the object snaps, although of course it is not an object snap, but what it does is it actually projects object snaps. So that is why it has an association with it. Now, let’s come up to polyline here and let’s turn off smart track and I’m just going to draw a polyline following the profile of these surfaces. Now as we’d expect, we’re not drawing on the construction plane because obviously I was using object snaps. Object snaps will override a default nature of Rhino to draw on the construction plane. Now if I wish to create a profile of these surfaces, I could actually place the curve on the construction plane. I could use project to do that. So let’s just delete that polyline and carry out the same procedure but with project on. So I turn on project and let’s do it. Now, even before I’ve made a left click, you can see that elevator line appear in all viewports showing me my polyline, my object snap is being projected down to the construction plane below. So note that my active viewport is the top view, therefore the project is being projected down to the top construction plane. Now I’m just going to delete that, I’m going to turn off project and I’m going to go back to where we started here because I want to show you another little command which is very similar where you can actually alter this polyline retrospectively.
Now, if I look under the transform, I’m looking for project to scene plane. If I go to the command line and let’s just type in... there you go, I’ve found that there within the autocomplete. So I just typed in PRO and I can find the third, I select my curve and if I click on done, here, and press enter when done. Active viewport is the top viewport here and click on done. It’s asking me now whether I want to delete the input objects. When Rhino asks for an input object, it refers to the selected object here. So I’m going to say yes. You can see now that it is as if I projected that line right from the start. So that’s how you can change a line, how you can flatten it, using an AutoCad term there, flatten, but you’ll find actually that Rhino’s project to scene plane is more successful.
Okay, now let’s have a look at the modelling aid planer. We see that here right at the top. Now let’s delete this line. Now planer simply means flat. We see it pop-up in a number of commands in Rhino. We see it in planer curves, we see cap planer holes. It’s a very common CAD term. Now what I’d look to do using planer, is that I’m going to create a line that is level, at the same height as this green surface here. Now, if I make sure planer is not on. Now if I just start drawing the line, just remind ourselves what is going to happen here. I’m going to find the end point on the bottom left hand corner of this green surface, right click. Now of course, there’s that default nature of Rhino, projecting that line straight down to the construction plane. We see that in all the views. Now look what happens when I, if I turn on planer, that’s no longer the case. It’s maintained the height above the construction plane. So I can make a series of left clicks and you can see that line appearing in all the other views and its height matches the very first one that I found via that object snap at the bottom left hand corner of that green surface. Note what occurs here. If I bring my cursor over to the bottom right hand corner of this surface here and left click, Rhino drives that, see in the right viewport here? It drives that down to the object snap of that lower surface. So we can see that object snaps override the planer model and of course every subsequent point will match the last object height of the construction plane. Okay so that’s planer, so let’s just get rid of that.
Now what I’d like to show you now is a combination of planer and project. Say if we wish to create a polyline but to define the profile of these surfaces, but maintain their height. In other words create a planer line. So a line, same height as the green surface here, same height above the construction plane, but picking up the object snaps of each of these surfaces. Now we can achieve this by combination of project and planer. But the only tricky thing, the only thing we need to be aware of is the moment in which we need to turn project on. So let me demonstrate. If I click on polyline, now, if I have project on now, of course that line would be projected down to the construction plane, so we turn it off. Now make sure plane is on and make a left click. Now, if I turn on project, you’ll see, well you won’t see it quite yet, but the next point here you’ll see that white elevator line.
Alright thanks for joining us today. Please subscribe to our channel if you’d like updates when new tutorials are posted. Bye.