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. This is Sean from Simply Rhino. Welcome to today’s tutorial, in which we’ll continue with our series in order to help you learning Rhino for Mac. In this tutorial, I’m going to be looking further at some Boolean commands.
Okay, now let’s start by just creating a box. So, I’m going to slide up to solid box, corner to corner. I’ve got grid snap on, and I’m just going to make a couple of left clicks here in the top view to define the base and then I’m going to define a height by just dropping down in to the front view here with my cursor. Now let’s change the type of view that I have here to a ghosted view and I’m going to place a sphere on the corner here. So I’m going to slide up to solid, sphere, send to radius, and make sure that I’ve got my end object snap on here. So I’ll make a left click and I’ll slide down to the front view here and snapping to the grid, placing my radius at about nine o clock, therefore the seam of that sphere will be placed in an orthogonal position.
Now, I’d like to just start by showing you this particular command, Boolean two objects. Obviously the limitation on this command is that it will only work with two objects. So if I just execute that. Now top left hand corner Rhino is asking me to select two objects to Boolean and note the delete input is ticked here. I select one object, and another. Now Rhino asks me to click to iterate through Boolean results, click enter to accept. What that means is that if I make a series of left clicks, Rhino is going to cycle through the Boolean possibilities, and you’ll see in the bottom left hand corner here of the interface, intersection. So Rhino is reporting to me what type of Boolean I’m viewing here. So I make another left click, bottom left hand corner, A – B. So that’s the different, as if I was using the Boolean difference command. I make another left click. That’s another difference but it’s the part that’s been removed from the sphere. I make another left click, inverse intersection. That’s interesting because that particular one isn’t available from the drop down menu. I just cycle through. I’ve got a union, intersection, A – B, B – A, inverse selection. That’s probably the most interesting one.
So I’m going to just press enter now and it would have left me with the inverse selection. So let’s just see what that is, an inverse selection. I just drag this object away and you’ll see. It’s removed the intersecting part between those two objects.
Now what I would like to do now is, I’m just going to type in command Z and again, I’m going back to my two original intersecting objects. Now I mentioned in the last video that it’s of benefit if we try and carry out Boolean’s without directly using the Boolean commands. So what I’d like to do is show you a few examples of precisely that. So I’m going to select those two objects and using my gumball here, I’m going to just make a few copies. So what I’m doing is, I’m holding down the ALT key. That’s going to make a copy and again, holding down the ALT key and I’m just dragging that constraining red arrow direction.
So just as a repeat of previous, I’m going to use my… so this is a reminder. I’m going to come down to curve from objects, and I’m going to choose intersection. So, one, two, I press enter. Now that’s left me with a closed curve and as we saw previously, we can use that particular curve to carry out what would have been a Boolean difference command by using the trim command. So if I click on the edge of the cube here and then the top of the sphere, all that leaves me with is to join these two objects together. So now I click on join. So that was carrying out what would perhaps have been a Boolean difference, but using the intersection command followed by trim and join.
Now let’s see how we can carry out something similar here but simply using the split command. So if I execute the split command, Rhino is going to ask me, select objects to split. I choose the sphere as the object to split. I press enter. It asks me for the cutting object, I choose the sphere. I press enter. Now what I’m going to do now, I press enter, I’m going to now carry out the reverse. I’m going to choose my sphere as the object I’m going to split and I’m going to split it with the box. Press enter.
Now, what’s happened here? So I’ve split one object with the other and then the other object with the other. So if I hide this sphere here you’ll see, and if I hide the corner of this cube, you’ll see what I’m left with. If I join these two parts together now, holding down my shift key, I can type in JO, press enter, I’ve carried out a Boolean difference. If I click on my show command here, you see it brings back my sphere, and if I delete these now, these two parts here.
So I’m just showing you how you could carry out a Boolean difference by simply just using the split command. Now how else could we carry out this? We could use the trim command.
If I use trim, if I execute the trim command, select cutting objects. If I say that my cutting object is the sphere here, I press enter. Because I’m in a ghosted view it means that I can click on the edge of the cube here and it will trim that part away. I press enter. Now all I’m left to do is to use this object as my cutting object, press enter and then I click on the edge of the sphere. Press enter, and again, all I need to do is join.
So there you are. I recommend that you carry out these Boolean type commands, whilst exploring trim, split and join and intersection. I hope that was useful to you and I look forward to seeing you again. Thank you.