FMSLogo Code

Replace usage of ELIPSA2 with ARCOELIPSE2
ELIPSA2 is deprecated and ARCOELIPSE2 is the preferred name.

Add a regression test for a degenerate case of ELLIPSEARC2
x-semiaxis = 0 and the angle swept is only 10.

Remove trailing whitespace

Improve the dashed-line ellipse example for ELLIPSEARC2
- Don't draw the ellipse twice
- End with the pen state down

esta -> ésta to avoid ambiguity

Rename :principio.ángulo to :ángulo.de.partida
The new name feels like a more natural translation for "start.angle"

Update the documentation for ELLIPSEARC2 to match fix for Bug #494.

Fix the documented order of the X and Y inputs for ELLIPSEARC2.
The last time I looked at ELLISEARC2, I had convinced myself that the order was swapped, but taking a closer look at the ELLIPSEARC2 behavior, I realize that I was wrong (or at least I was wrong the way these inputs are documented).

This is good news, because X Y makes more sense than Y X.

Finish fixing Bug #494; ELLIPSEARC2 now leaves at the point where the ellipse stopped.

This updates ELILPSEARC to account for the fix to ELLIPSEARC that makes it correctly honor the angle.

Partial fix for Bug #494 (ELLIPSEARC2 problems), as submitted by Francesco Simone Carta.

This would have been a complete fix in FMSLogo 7.7.0, but I have since changed ELLIPSEARC to calculate the angle of the sweep correctly, which made it so, in this implementation, the turtle either glides ahead or behind the drawn arc (but remains on the ellipse, which is still an improvement).

This also brings in a breaking change for when the third parameter is negative. The old ELLIPSEARC drew the arc on the opposite side of where the turtle is located. The new implementation draws the ELLIPSEARC sweeping in the opposite direction. The new behavior is more intuitive.