14/04/2020 - Helix and Guggenheim

In this class we learned how to:

- create spiral surfaces, such as a Helix;

- Subtract spiral surfaces from other surfaces;

- draw a surface similar to Guggenheim Museum.

First, we drew a spiral, using the command Helix, with center in x,y coordinates 30, 30, base radius with 20 units, top radius with 20 units, and height with 40 units.

And then added a box covering all the spiral.

And how can we give thickness to this helix?

First we draw a circle with center in the starting point of the helix, and 3DRotate for it to be perpendicular to the spiral line.

Then, we use the command Extrude, using the option Path and we select the helix.

After this step, we added the box.

And using the command Subtract, we created some empty spaces in this box, where the helix was.

Here's another example:

Then, we repeated the same process, but instead of using a circle to give thickness to the helix, we used a square, to replicate a parking lot.

Then, we learned how to recreate the Guggenheim Museum famous spiral building.

Using a different radius on the bottom and the top of the helix, we created an inclined spiral.

In this case, since the thickness is not just given by a circle or a square, we drew a shape with the wall, the floor and the guard with a certain thickness and then we 3DRotate this shape for it to be vertical.

Then, we Extrude this shape using Path, and then selecting the helix.