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Added xymove to turtle.

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Adrian Mariano 2020-03-14 23:52:16 -04:00
parent 1d63556121
commit 55798da5c5
1 changed files with 10 additions and 6 deletions
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shapes2d.scad
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@ -406,14 +406,17 @@ function _normal_segment(p1,p2) =
// origin, pointed along the positive x axis with a movement distance of 1. By default, `turtle` returns just
// the computed turtle path. If you set `full_state` to true then it instead returns the full turtle state.
// You can invoke `turtle` again with this full state to continue the turtle path where you left off.
//
// The turtle state is a list with three entries: the path constructed so far, the current step as a 2-vector, and the current default angle.
//
// For the list below, `dist` is the current movement distance.
//
// Commands | Arguments | What it does
// ------------ | ------------------ | -------------------------------
// "move" | [dist] | Move turtle scale*dist units in the turtle direction. Default dist=1.
// "xmove" | [dist] | Move turtle scale*dist units in the x direction. Default dist=1.
// "ymove" | [dist] | Move turtle scale*dist units in the y direction. Default dist=1.
// "move" | [dist] | Move turtle scale*dist units in the turtle direction. Default dist=1.
// "xmove" | [dist] | Move turtle scale*dist units in the x direction. Default dist=1. Does not change turtle direction.
// "ymove" | [dist] | Move turtle scale*dist units in the y direction. Default dist=1. Does not change turtle direction.
// "xymove" | vector | Move turtle by the specified vector. Does not change turtle direction.
// "untilx" | xtarget | Move turtle in turtle direction until x==xtarget. Produces an error if xtarget is not reachable.
// "untily" | ytarget | Move turtle in turtle direction until y==ytarget. Produces an error if xtarget is not reachable.
// "jump" | point | Move the turtle to the specified point
@ -550,12 +553,12 @@ function _turtle_command(command, parm, parm2, state, index) =
arcsteps=3,
parm = !is_string(parm) ? parm : undef,
parm2 = !is_string(parm2) ? parm2 : undef,
needvec = ["jump"],
needvec = ["jump", "xymove"],
neednum = ["untilx","untily","xjump","yjump","angle","length","scale","addlength"],
needeither = ["setdir"],
chvec = !in_list(command,needvec) || is_vector(parm),
chvec = !in_list(command,needvec) || is_vector(parm,2),
chnum = !in_list(command,neednum) || is_num(parm),
vec_or_num = !in_list(command,needeither) || (is_num(parm) || is_vector(parm)),
vec_or_num = !in_list(command,needeither) || (is_num(parm) || is_vector(parm,2)),
lastpt = select(state[path],-1)
)
assert(chvec,str("\"",command,"\" requires a vector parameter at index ",index))
@ -581,6 +584,7 @@ function _turtle_command(command, parm, parm2, state, index) =
) :
command=="xmove" ? list_set(state, path, concat(state[path],[default(parm,1)*norm(state[step])*[1,0]+lastpt])):
command=="ymove" ? list_set(state, path, concat(state[path],[default(parm,1)*norm(state[step])*[0,1]+lastpt])):
command=="xymove" ? list_set(state, path, concat(state[path], [lastpt+parm])):
command=="jump" ? list_set(state, path, concat(state[path],[parm])):
command=="xjump" ? list_set(state, path, concat(state[path],[[parm,lastpt.y]])):
command=="yjump" ? list_set(state, path, concat(state[path],[[lastpt.x,parm]])):