Join Veejay Gahir for an in-depth discussion in this video 3D placement, part of Alias Essential Training.
- Let's take a look at how we can place 3D entities in model space. So let's shade this up and you can see it's a very simple scenario. We have a cylinder, we have a cone, and we have a button. We're gonna place these all on to the cylinder, and I wanna show you some techniques for doing this. Ok, let's go back to wire frame and the function we're gonna use is the place function and let's open up the options for that. So there's a whole bunch of data on the top here that's all zeroed out, and then we have the option to delete points when finished and set local access from geometry.
So let's leave exactly everything as it is and I'm gonna go ahead and select this cone. This cone is gonna be placed right at the top here. So let's look at the prompts from Alias. So Alias is telling us to use the mouse button to pick up to three points that define the from location, so up to three points. So I wanna use my control and alt, snap to this isoparm right to the center. Now I can say accept from if that's all I want to do or a space bar and now Alias is saying "Select up to three points that define the to location", so again I can pick control and alt, define the center, accept to with the space bar and finally one more space bar or place.
So this is a purely point to point translation. So let's undo that and let's go back into the command. So let's go ahead and pick the entity we're gonna move and now we're gonna define three points 'cause this is gonna make a more accurate translation for us. Now, the thing to be careful of here is the order that you pick on the bottom surface here has to be the same order that we pick in the cylinder. Otherwise, we're gonna have the cone flipped 180. So let's go ahead, control alt, snap to that location, control alt, snap to that location, and the control and alt and snap to that location there.
Let's accept that. Control and alt, we're gonna snap here, there, and this location, accept that and then one more space bar and that's the placement. Now you can see you can go back in here and you can edit any of these but that's quite complicated because we've got a lot of numerical values to consider here. It's just easier to do it graphically from the components themselves. Ok, so we've placed it like that. So we can actually control z this, there's another way we can do this which is a little bit easier and we can use planes.
So let's activate the plane layer and we're gonna do the same command. Select the entity, and this time we're gonna just pick the plane. Then we're gonna accept from, space bar, and we're gonna select this plane here, accept to and one more to place. But you'll notice when I created this planes, I've got the orientation of the planes 180 degrees out of phase and now the cone is flipped in one direction. Let's control z that, and we're gonna fix this. So let's go ahead, pick this plane and we're gonna rotate it 180 in the x and that should correct this operation.
Let's go to the rotate function, let's do a reset on that and then we're gonna rotate in the x. What you'll notice with my left mouse button I'm not allowed to rotate it, it's not allowing me to rotate it. It's because it's locked on to the top of that cylinder. So what I need to do now is delete the construction history for that plane. So let's zoom in and delete construction history. Let's say yes to that and now we can go to our rotate command, middle mouse button rotate and rotate in the x like so. Let's just keep going until we get close to 180, control five, let's look at the transformation info.
Rotate in the x, we're gonna make that minus 180. There we go. Let's go ahead now and do the transform. So place, component, select the plane, space bar to accept, plane, space bar to accept, one more space bar will place that on the top. So you can use planes for this function as well. Now what we're gonna do here is shade this up to see what we have. We're gonna place this button on the front of the cylinder. So what we need to do is we need to create some more geometry to enable us to select three points on the front face here.
We can select this isoparm that's essentially only two points. There's a number of ways we can do this. We can very simply go to create line, control alt, snap to this isoparm to this location here. And then with the middle mouse button or the left mouse button depending on which direction we wanna go, I wanna use left here. I can set off in the x direction like that. Now I can pick this point, this point and either side of this from my three points to locate the button. Another way we can do this, if I delete that entity, is go into the top view, create line, alt snap snap, and select the entity.
First snap point is where my pivot point's located, so now I wanna go to move, control alt and I can snap that again. So there's multiple ways of doing this in Alias. Ok so we're ready to go now. So let's go back to the place function. Let's select the button and we have to select our three points. So we're gonna select the origin, this position and that position there, accept from, and now we're gonna select the three points over here, so this one, this one, and this one just be careful on the order that you select.
Ok, so now what we're gonna do is shade this up. Now that's what I'm looking for but the button is sitting a little bit too far off the surface so very simply let's pick that button, move, and we're moving in the y direction so middle mouse button. And we're just gonna depress it into that surface like that. That's how you do 3D placement in Alias.
- Manipulating views and entities
- Working with layers
- Creating curves
- Sweeping, extruding, revolving, offsetting, and blending surfaces
- Modifying geometry
- Moving, scaling, flipping, and rotating objects
- Trimming curves and surfaces
- Creating copies of objects
- Aligning, combining, and splitting objects
- Analyzing geometry
- Shading models