Turtle position should correctly report location in turtle coordinates #81

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scott · 2024-06-17T18:58:54Z

scott commented

2024-06-17 18:58:54 +00:00

Current hack negates the x coordinate before translating the turtle; but then the internal representation has a negative number. Change the negation to the draw code, instead of the hack by negating the term in goto!

Current hack negates the x coordinate before translating the turtle; but then the internal representation has a negative number. Change the negation to the draw code, instead of the hack by negating the term in `goto!`

scott commented

2024-06-21 03:30:05 +00:00

There is almost certainly a way to use p5 transformations to make this work, but I reckon the thing to do here, now that computer class is all over, is to stand up a turtle graphics protocol out of Ludus, and then to write domain-specific handlers that translate turtle graphics protocol to whatever environment—SVG, some canvas/animation lib, a robot turtle, a 2D plotter, etc.

That way, we can just use turtle geometry in Ludus, and don't have to worry at all about the transformations that go into rendering lines and turtles.

Leaving this open to discuss in the coming weeks.

There is almost certainly a way to use p5 transformations to make this work, but I reckon the thing to do here, now that computer class is all over, is to stand up a turtle graphics protocol out of Ludus, and then to write domain-specific handlers that translate turtle graphics protocol to whatever environment—SVG, some canvas/animation lib, a robot turtle, a 2D plotter, etc. That way, we can just use turtle geometry in Ludus, and don't have to worry at all about the transformations that go into rendering lines and turtles. Leaving this open to discuss in the coming weeks.

scott added the

bug

label 2024-07-03 00:18:00 +00:00

scott added this to the Turtle Protocol & Adapters project 2024-07-21 17:40:17 +00:00

scott commented

2024-07-21 23:27:11 +00:00

Done in 121446c5c4. The turtle state is correctly calculated and reported, now. It's up to adapters to make sure the turtle graphics protocol is drawn correctly.

Done in https://alea.ludus.dev/twc/ludus/commit/121446c5c4246bb9a100bf56c9e36025496b738b. The turtle state is correctly calculated and reported, now. It's up to adapters to make sure the turtle graphics protocol is drawn correctly.

scott closed this issue

2024-07-21 23:27:11 +00:00

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