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seen Aug 7 at 9:33

artist. code is my medium.


Sep
24
awarded  Autobiographer
Sep
25
awarded  Notable Question
Mar
11
comment How To Create a Non-Linear Output from a Linear Input?
i see, thanks. what would a polynomial example look like?
Mar
11
asked How To Create a Non-Linear Output from a Linear Input?
Mar
11
accepted how to find center of an arc given start point, end point, radius, and arc direction?
Mar
2
awarded  Popular Question
Mar
22
comment how to tell if an arc is within bounds?
henry, i'm still having trouble understanding how to calculate the boundary crossing points and the candidate centers. could you elaborate on the formulas you used? maybe give them to me in abstract form? my algebra is old and crusty, although I'm trying to improve it.
Mar
18
comment how to find center of an arc given start point, end point, radius, and arc direction?
if i substitute that equation for x, i still end up with an unknown (y), right? IOW, even though i can rearrange the original equations to solve for y, what you're suggesting still leaves a y on the right side. or am i missing something?
Mar
17
awarded  Supporter
Mar
17
awarded  Commentator
Mar
17
comment how to find center of an arc given start point, end point, radius, and arc direction?
hey ross, so how do i rearrange one of these equations to first solve for x, than for y, when they contain both x and y as unknowns? i figure i can rearrange the first one to solve for x like this: x = -x0^2 + (y-y0)^2 = r^2. but that still has the unknown y on the right side.
Mar
17
awarded  Student
Mar
17
accepted how to tell if an arc is within bounds?
Mar
17
comment how to tell if an arc is within bounds?
thank you so much henry! i also need help finding the center, so posted that in another question
Mar
17
asked how to find center of an arc given start point, end point, radius, and arc direction?
Mar
16
comment how to tell if an arc is within bounds?
does anyone know how henry calculated his values in step #3?
Mar
15
comment how to tell if an arc is within bounds?
ok, i see what you mean about two centers. in my case, i know which one i'm using as I know which of the two end points is the starting point and i know whether i'm going clockwise or counterclockwise from the start point.
Mar
15
comment how to tell if an arc is within bounds?
@henry: in #2, what do you mean there could be two centers? at least in how I'm doing this, my radius will always be, at smallest, half the distance between the two points. sometimes larger. but how does having a radius larger than distance/2 result in two arcs? in #3, how are you finding the values (-5,3.93649) and (-5,0.0635)? thanks!
Mar
15
comment how to tell if an arc is within bounds?
ah, so you're talking about an arc with a different radius, right? is there a formula I can use to detect whether my arc will go out of bounds?
Mar
15
comment how to tell if an arc is within bounds?
i may have confused the issue. i'm talking about an arc that starts at x1,y1, and ends at x2,y2, with a radius. so in my example, radius of 2 gives me half a circle. anyway, what do you mean by "join" them?