- Start with two ellipses, adjust their major/minor axes
- Divide both ellipses into N1 points
- Decompose points into X, Y and Z coordinates
- Take the domain of the curves and run it through a sine function
- Create new points that take the old X, Y, and add (a potentially negative number) the result of the sine function into the Z coordinate.
- Draw lines between the points that belong to the inside and outside ellipses
- Count the number of lines
- Create a list of booleans which is number of lines - N2, TRUE and N2 False
- Shift list of booleans by N3, wrapping on
- Cull the list of lines by booleans
- Decompose remaining lines into start(P1) and end(P2) points
- Compare start and end points Z coordinate
- If Z1 > Z2 then draw SDL (start, direction, length) line of N4 length along vector P1->P2
- Else draw SDL line of N4 Length along vector P2->P1
- Decompose P2 into XYZ coordinates, make new point using P2 XY and P1 Z
- Create unit vector between P1 and P2b
- rotate vector .5pi radians
- set amplitude to N5
- Extrude SDL lines by respective vectors

## Saturday, October 29, 2011

### 033_idealhouse_sineroof

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