Here, see how to extrude two polylines through each other, explode the solids into lines, and trace over the wireframe using a 3DPOLY object. You can then convert the 3DPOLYs into regions and erase the rest.
- [Instructor] Let's consider the roof that needs to go around here. I'll make it in an entirely different way, so you have additional experience with different techniques. So, in this case, I'm going to rotate the UCS around the Y axis, UCS, Enter, Y, Enter, Enter. So now, the XY plane is on the side of this roof. I'm going to switch my layer to layer zero, so that it can be different to this roof layer. And then I'll draw a polyline, and I'll trace the perimeter of this side of the roof, and type C for Close.
And then, go over to the sketch over here where you can see both roofs at different levels. And then, move last, L, Enter, Enter from the top here, down to the top of this roof. So, that will move that object down. And now, I'd like to slide it back, so it's flush with this wall. So, I'll move this object back from this location, and I'm going to us a Point Filter that excludes the blue axis.
So, it will be Point XY, Enter, @, Enter. And then, I'll click on the corner here of the wall to slide that back, so it's underneath the overhang of the green roof above. Then, draw a line from the top of that polyline over here, snap it perpendicular to the roof, and then go this way. And let's see if we can snap that to something on this sketch. I see a line there and it needs to go in the Y direction, so I'll exclude that from the Point Filter.
It will be Point XZ, Enter, @, Enter. And then, I'll click right here on the sketch to show me how far that roof has to go. And so, now, I will Copy this profile over here to the end. And then, I'm going to reset the coordinate system USC, Enter, Enter. So now, the Z axis goes up. I'll use the rotate command and remember, the rotate command always rotates around the blue axis.
That's why I reset the system. And then, I'll rotate this in this direction. So now, we have cross sections representing the end conditions of this roof. I'll then extrude this over, and I didn't quite do it far enough. I think it snapped incorrectly. So, undo, try again. Extrude this object over. Sometimes it's helpful if you click off in clear space where there's nothing you can accidentally snap to. And I'll extrude this object over in the other direction, so it penetrates through, like that.
And then, I'd like to isolate these two objects. So, I'll come down here and click on Isolate Objects. Then, I'll click on these two white objects, Enter. So now, it's actually not a trivial problem to cut these two surfaces back where they intersect. But I'd like to keep things simple, and I'll just explode these objects. And that converts them into regions. And I'll explode them a second time, and that converts them into lines. Now, I'll use the 3D Poly Command, and trace over the top surface here.
And then, I'll click right here at the bottom of the ridge, come over here, type C for Close. And then, Region Last Object. And then, I'll do another 3D Poly, and I'll trace over this roof. And then, Close, and then Region Last. So now, we have two surfaces, there. I'm going to erase all of this and hold down the Shift key, and then click on the two regions to deselect them.
Then, End Object Isolation. And then, we can go ahead and thicken up the roof. And we can do that in a couple of different ways you've seen. I think this time, I'll just use the earlier method, where we just copied these up a foot. And then, we will make a loft between them. And do that again for the other one. And then, I'm going to isolate this layer temporarily.
And then, I can sculpt all of this information together into a solid object. And then, End Layer Isolation by typing layun, Enter. And finally, we need to change the layer of this roof object. I'll click on it and type QP, Enter, and change the layer assignment to - Roof. And then, press Escape to deselect.
- Arranging elevations and sections around a plan
- Rotating objects in 3D
- Extruding walls, interior partitions, and headers
- Building slabs
- Modeling doors, windows, and stairs
- Sculpting terrain
- Creating a second floor
- Building roof surfaces
- Sculpting solids from regions and surfaces
- Modeling a tower