[MWForum]Calling mathcats: geometry help please
Jeff Knope
mwforum@lists.mathcats.com
Thu, 12 Aug 2004 17:13:08 -0700
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Daniel,
You said, "A second problem is to find a not-too-cumbersome way to
termine when lines do intersect, but the line segments
between x1 and x2, and x3 and x4 do not. For example:
[[[1 1] [5 5]]
[[3 1] [6 5]]]"
What I need is to get an intersect value for this class of cases too. =
Some kind of additional tag that expresses whether or not the =
intersection is on the segments would also be useful. Am I right, that =
since your program doesn't require a turtle running around, it should =
have no trouble coughing up intersection locations far off the available =
graphics field?
I'm trying to read your code, but since I understand neither the =
mathmatical principles it's based on, nor the meaning of terms like "t1, =
it's not making any bulbs flash for me. Is there a name for this =
strategy?
Thanks, --Jeff
----- Original Message -----=20
From: "Daniel Ajoy" <dajoy@openworldlearning.org>
To: <mwforum@lists.mathcats.com>
Sent: Thursday, August 12, 2004 5:03 AM
Subject: Re: [MWForum]Calling mathcats: geometry help please
> On 11 Aug 2004 at 21:46, Jeff Knope wrote:
>=20
> > I haven't yet tried your first code offering.=20
> > I'll tell you what I find (or need).
>=20
> I forgot to tell you that I think my code solves=20
> both problems.
>=20
> ;)
> Daniel
> OpenWorld Learning
>=20
>=20
>=20
>=20
> _______________________________________________
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>=20
>
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<DIV><FONT face=3DArial color=3D#800000 size=3D2>Daniel,</FONT></DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2>You said, "</FONT>A =
second problem is=20
to find a not-too-cumbersome way to<BR>termine when lines do intersect, =
but the=20
line segments<BR>between x1 and x2, and x3 and x4 do not. For=20
example:<BR><BR>[[[1 1] [5 5]]<BR> [[3 1] [6 5]]]"<BR></DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2><STRONG>What I need is =
to get an=20
intersect value for this class of cases too. Some kind of additional tag =
that=20
expresses whether or not the intersection is on the segments would also =
be=20
useful. </STRONG>Am I right, that since your program doesn't require a =
turtle=20
running around, it should have no trouble coughing up intersection =
locations far=20
off the available graphics field?</FONT></DIV>
<DIV><FONT face=3DArial color=3D#800000 =
size=3D2><STRONG></STRONG></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2>I'm trying to read your =
code, but=20
since I understand neither the mathmatical principles it's based on, nor =
the=20
meaning of terms like "t1, it's not making any bulbs flash for me. Is =
there a=20
name for this strategy?</FONT></DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2>Thanks, =
--Jeff</FONT></DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>----- Original Message ----- </FONT>
<DIV><FONT face=3DArial size=3D2>From: "Daniel Ajoy" <</FONT><A=20
href=3D"mailto:dajoy@openworldlearning.org"><FONT face=3DArial=20
size=3D2>dajoy@openworldlearning.org</FONT></A><FONT face=3DArial=20
size=3D2>></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>To: <</FONT><A=20
href=3D"mailto:mwforum@lists.mathcats.com"><FONT face=3DArial=20
size=3D2>mwforum@lists.mathcats.com</FONT></A><FONT face=3DArial=20
size=3D2>></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Sent: Thursday, August 12, 2004 5:03=20
AM</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Subject: Re: [MWForum]Calling mathcats: =
geometry=20
help please</FONT></DIV></DIV>
<DIV><FONT face=3DArial><BR><FONT size=3D2></FONT></FONT></DIV><FONT =
face=3DArial=20
size=3D2>> On 11 Aug 2004 at 21:46, Jeff Knope wrote:<BR>> =
<BR>> > I=20
haven't yet tried your first code offering. <BR>> > I'll tell you =
what I=20
find (or need).<BR>> <BR>> I forgot to tell you that I think my =
code=20
solves <BR>> both problems.<BR>> <BR>> ;)<BR>> =
Daniel<BR>>=20
OpenWorld Learning<BR>> <BR>> <BR>> <BR>> <BR>>=20
_______________________________________________<BR>> MWForum mailing=20
list<BR>> </FONT><A href=3D"mailto:MWForum@lists.mathcats.com"><FONT =
face=3DArial=20
size=3D2>MWForum@lists.mathcats.com</FONT></A><BR><FONT face=3DArial =
size=3D2>>=20
</FONT><A =
href=3D"http://lists.mathcats.com/mailman/listinfo/mwforum"><FONT=20
face=3DArial=20
size=3D2>http://lists.mathcats.com/mailman/listinfo/mwforum</FONT></A><BR=
><FONT=20
face=3DArial size=3D2>> Attachments archived at:<BR>> </FONT><A=20
href=3D"http://www.mathcats.com/mwforum/attachments.html"><FONT =
face=3DArial=20
size=3D2>http://www.mathcats.com/mwforum/attachments.html</FONT></A><BR><=
FONT=20
face=3DArial size=3D2>> To unsubscribe or for administrative =
questions contact=20
<BR>> </FONT><A =
href=3D"mailto:mwforum-admin@lists.mathcats.com"><FONT=20
face=3DArial =
size=3D2>mailto:mwforum-admin@lists.mathcats.com</FONT></A><BR><FONT=20
face=3DArial size=3D2>> <BR>> </FONT></BODY></HTML>
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