Scratch

Hardmath123 wrote:

Well, the math is actually quite easy!

if <(((lineX2)-(pointX))/((lineX2)-(lineX1)))=(((lineY2)-(pointY))/((lineY2)-(lineY1)))>
//...

Should work, but that's off the top of my head and I'm getting late for a class... 

I fixed your scratchblocks, there were too many brackets...

legoscratch wrote:

Hmm, for me it only seems to report yes on the line's endpoints.

I was thinking that... Wait a minute, I'm trying to work it out...

I'm not sure but this might work:

<<<[Line X start] < [point x]> and <[Line X end] > [point x]>> and <<[Line Y start] < [point y]> and <[Line Y end] > [point y]>>> //huh I thought I trying adding a >

Last edited by Splodgey (2012-03-27 04:04:14)

Hmm...

if <<[Line X start] < [point x]> and <[Line X end] > [point x]>>
if <<[Line Y start] < [point y]> and <[Line Y end] > [point y]>>
well that worked
end
end

Use another

<<> and <>>

instead of nested ifs.

legoscratch wrote:

Splodgey wrote:

Hmm...

if <<[Line X start] < [point x]> and <[Line X end] > [point x]>>
if <<[Line Y start] < [point y]> and <[Line Y end] > [point y]>>
well that worked
end
end

Use another

<<> and <>>

instead of nested ifs.

But that will report the bounding box, not the line itself.

Edit:
Just tested Hardmath's method and it works great!
Had to round to the nearest tenth, though.
Then to make it work with only the segment and not its entire line, I made sure it was inside the line's bounding box.

Edit 2:

<<<[Line X start] < [point x]> and <[Line X end] > [point x]>> and <<[Line Y start] < [point y]> and <[Line Y end] > [point y]>>> //huh why is this cutting off?

Needed one more > at the end 

It will work for both boxes and lines. A line is a box but just a few pixels wide/high...



EDIT: Ah, Diagonal lines!

<<> and <touching color [line colour]?>>

Really, Really bad way to fix it but it's all I can think of right now...

Last edited by Splodgey (2012-03-27 04:07:12)

You could use the actual equation for the line by doing this:

set [m v] to (((Y2) - (Y1)) / ((X2) - (X1))) // calculate and save slope
set [b v] to ((Y2) - ((m) * (X2))) // derived from y=mx+b to b=y-mx
if <[3] > ([abs v] of ((((m) * (xtest)) + (b)) - (ytest)))>
  action here
end

Doing these calculations won't slow down your script...not noticeably anyway.  Also, this way you can give a range that your y value can be in in order to be on the line.  Right now the range is 6 surrounding the line but you can also change it to just being less than the line, closer to the line, above the line, etc.

Last edited by AtomicBawm3 (2012-03-29 11:08:28)

Hardmath123 wrote:

Then you could just say
if <touching [lineColor]>
whatever
end

Anyway, my method worked, so... you're welcome, I guess. 

I wanted to have different lines of the same color
... and I guess I was just sort of curious
Thanks anyway!