* Metfun macro for triangle @ 2011-03-24 8:59 Otared Kavian 2011-03-24 9:29 ` Stefan Müller 0 siblings, 1 reply; 6+ messages in thread From: Otared Kavian @ 2011-03-24 8:59 UTC (permalink / raw) To: mailing list for ConTeXt users Hi all, I have a document in which I must draw several triangles for which two summits, say z0, z1, and the length of the two other sides are known, so that the third summit, say z2, is completly determined. In order to draw one triangle the following works fine: \setupcolors[state=start] \starttext \startMPcode z0 = (0cm,0cm) ; z1 = (5cm,0cm) ; path p, q ; pickup pencircle scaled 2mm ; drawdot z0 ; drawdot z1 ; p := halfcircle scaled 8 cm ; % twice the length of the second side at z0 p := p shifted z0 ; q := halfcircle scaled 6 cm ; % twice the length of the second side at z1 q := q shifted z1 ; z2 = p intersectionpoint q ; drawdot z2 ; pickup pencircle scaled 1mm ; draw z0--z1--z2--cycle withcolor blue ; \stopMPcode \stoptext However I would like to have a macro, for instance named Triangle, which accepts four arguments z0,z1, length_1, length_2, so that in a MetaPost code i can use draw Triangle(z0,z1, 4, 3) withcolor blue ; in order to draw the above triangle. Has anyone any idea about how to do this? Thanks in advance for your help: OK ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Metfun macro for triangle 2011-03-24 8:59 Metfun macro for triangle Otared Kavian @ 2011-03-24 9:29 ` Stefan Müller 2011-03-24 9:57 ` Otared Kavian 0 siblings, 1 reply; 6+ messages in thread From: Stefan Müller @ 2011-03-24 9:29 UTC (permalink / raw) To: mailing list for ConTeXt users Hi, what about \startMPdefinitions vardef Triangle(expr za, zb, la, lb) = path p, q ; pair zc ; pickup pencircle scaled 2mm ; drawdot za ; drawdot zb ; p := fullcircle scaled la shifted za ; q := fullcircle scaled lb shifted zb ; zc = p intersectionpoint q ; drawdot zc ; pickup pencircle scaled 1mm ; za--zb--zc--cycle enddef; \stopMPdefinitions \starttext \startMPcode draw Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) withcolor blue ; \stopMPcode \stoptext Stefan On 24.03.2011 09:59, Otared Kavian wrote: > Hi all, > > I have a document in which I must draw several triangles for which two summits, say z0, z1, and the length of the two other sides are known, so that the third summit, say z2, is completly determined. > In order to draw one triangle the following works fine: > > \setupcolors[state=start] > \starttext > \startMPcode > z0 = (0cm,0cm) ; > z1 = (5cm,0cm) ; > path p, q ; > pickup pencircle scaled 2mm ; > drawdot z0 ; > drawdot z1 ; > p := halfcircle scaled 8 cm ; % twice the length of the second side at z0 > p := p shifted z0 ; > q := halfcircle scaled 6 cm ; % twice the length of the second side at z1 > q := q shifted z1 ; > z2 = p intersectionpoint q ; > drawdot z2 ; > pickup pencircle scaled 1mm ; > draw z0--z1--z2--cycle withcolor blue ; > \stopMPcode > \stoptext > > However I would like to have a macro, for instance named Triangle, which accepts four arguments z0,z1, length_1, length_2, so that in a MetaPost code i can use > draw Triangle(z0,z1, 4, 3) withcolor blue ; > in order to draw the above triangle. > Has anyone any idea about how to do this? > > Thanks in advance for your help: OK > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Metfun macro for triangle 2011-03-24 9:29 ` Stefan Müller @ 2011-03-24 9:57 ` Otared Kavian 2011-03-24 10:29 ` Stefan Müller 0 siblings, 1 reply; 6+ messages in thread From: Otared Kavian @ 2011-03-24 9:57 UTC (permalink / raw) To: mailing list for ConTeXt users Hi Stefan, Thanks for the quick answer and solution! Your solution works perfectly in mkiv; however typesetting with mkii results in ! Undefined control sequence. l.3 \startMPdefinitions Is there a solution with mkii? May I ask one more question? In the macro you wrote Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) one has to specify the double of the length of each side (because a unit circle in MetaPost is a circle having diameter one). Would it be possible to change slightly the lines p := fullcircle scaled la shifted za ; q := fullcircle scaled lb shifted zb ; so that la and lb are replaced with their doubled values? I tried p := fullcircle scaled 2*la shifted za ; but this does not work. Thanks for your attention: OK On 24 mars 2011, at 10:29, Stefan Müller wrote: > Hi, > > what about > > \startMPdefinitions > vardef Triangle(expr za, zb, la, lb) = > path p, q ; > pair zc ; > pickup pencircle scaled 2mm ; > drawdot za ; > drawdot zb ; > p := fullcircle scaled la shifted za ; > q := fullcircle scaled lb shifted zb ; > zc = p intersectionpoint q ; > drawdot zc ; > pickup pencircle scaled 1mm ; > za--zb--zc--cycle > enddef; > \stopMPdefinitions > > \starttext > \startMPcode > draw Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) withcolor blue ; > \stopMPcode > \stoptext > > Stefan > > On 24.03.2011 09:59, Otared Kavian wrote: >> Hi all, >> >> I have a document in which I must draw several triangles for which two summits, say z0, z1, and the length of the two other sides are known, so that the third summit, say z2, is completly determined. >> In order to draw one triangle the following works fine: >> >> \setupcolors[state=start] >> \starttext >> \startMPcode >> z0 = (0cm,0cm) ; >> z1 = (5cm,0cm) ; >> path p, q ; >> pickup pencircle scaled 2mm ; >> drawdot z0 ; >> drawdot z1 ; >> p := halfcircle scaled 8 cm ; % twice the length of the second side at z0 >> p := p shifted z0 ; >> q := halfcircle scaled 6 cm ; % twice the length of the second side at z1 >> q := q shifted z1 ; >> z2 = p intersectionpoint q ; >> drawdot z2 ; >> pickup pencircle scaled 1mm ; >> draw z0--z1--z2--cycle withcolor blue ; >> \stopMPcode >> \stoptext >> >> However I would like to have a macro, for instance named Triangle, which accepts four arguments z0,z1, length_1, length_2, so that in a MetaPost code i can use >> draw Triangle(z0,z1, 4, 3) withcolor blue ; >> in order to draw the above triangle. >> Has anyone any idea about how to do this? >> >> Thanks in advance for your help: OK >> ___________________________________________________________________________________ >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >> archive : http://foundry.supelec.fr/projects/contextrev/ >> wiki : http://contextgarden.net >> ___________________________________________________________________________________ >> > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ %%%%%%%%%%%%%%%%%% Otared Kavian Département de Mathématiques Université de Versailles Saint-Quentin Bâtiment Fermat 45 avenue des Etats Unis 78035 Versailles cedex Téléphone: +33 1 39 25 46 42 Secrétariat: +33 1 39 25 46 44 Secrétariat: +33 1 39 25 46 46 e-mail: Otared.Kavian@math.uvsq.fr ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Metfun macro for triangle 2011-03-24 9:57 ` Otared Kavian @ 2011-03-24 10:29 ` Stefan Müller 2011-03-24 13:16 ` Otared Kavian 2011-03-24 14:14 ` Aditya Mahajan 0 siblings, 2 replies; 6+ messages in thread From: Stefan Müller @ 2011-03-24 10:29 UTC (permalink / raw) To: mailing list for ConTeXt users On 24.03.2011 10:57, Otared Kavian wrote: > Hi Stefan, > > Thanks for the quick answer and solution! > Your solution works perfectly in mkiv; however typesetting with mkii results in > ! Undefined control sequence. > l.3 \startMPdefinitions > Is there a solution with mkii? Then just drop the MPdefinitions section and put the complete vardef before your normal mp code in the MPcode section. That should work, I think. > May I ask one more question? > In the macro you wrote > Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) > one has to specify the double of the length of each side (because a unit circle in MetaPost is a circle having diameter one). Would it be possible to change slightly the lines Now that's strange... But I see what you mean. I didn't notice. > p := fullcircle scaled la shifted za ; > q := fullcircle scaled lb shifted zb ; > so that la and lb are replaced with their doubled values? I tried > p := fullcircle scaled 2*la shifted za ; Yeah, you need parentheses here, because otherwise Metapost tries to scale by 2 and then doesn't know how to multiply the result (the path "fullcircle scaled 2") with "la". p := fullcircle scaled (2 * la) shifted za ; q := fullcircle scaled (2 * lb) shifted zb ; > but this does not work. > > Thanks for your attention: OK np, Stefan. > On 24 mars 2011, at 10:29, Stefan Müller wrote: > >> Hi, >> >> what about >> >> \startMPdefinitions >> vardef Triangle(expr za, zb, la, lb) = >> path p, q ; >> pair zc ; >> pickup pencircle scaled 2mm ; >> drawdot za ; >> drawdot zb ; >> p := fullcircle scaled la shifted za ; >> q := fullcircle scaled lb shifted zb ; >> zc = p intersectionpoint q ; >> drawdot zc ; >> pickup pencircle scaled 1mm ; >> za--zb--zc--cycle >> enddef; >> \stopMPdefinitions >> >> \starttext >> \startMPcode >> draw Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) withcolor blue ; >> \stopMPcode >> \stoptext >> >> Stefan >> >> On 24.03.2011 09:59, Otared Kavian wrote: >>> Hi all, >>> >>> I have a document in which I must draw several triangles for which two summits, say z0, z1, and the length of the two other sides are known, so that the third summit, say z2, is completly determined. >>> In order to draw one triangle the following works fine: >>> >>> \setupcolors[state=start] >>> \starttext >>> \startMPcode >>> z0 = (0cm,0cm) ; >>> z1 = (5cm,0cm) ; >>> path p, q ; >>> pickup pencircle scaled 2mm ; >>> drawdot z0 ; >>> drawdot z1 ; >>> p := halfcircle scaled 8 cm ; % twice the length of the second side at z0 >>> p := p shifted z0 ; >>> q := halfcircle scaled 6 cm ; % twice the length of the second side at z1 >>> q := q shifted z1 ; >>> z2 = p intersectionpoint q ; >>> drawdot z2 ; >>> pickup pencircle scaled 1mm ; >>> draw z0--z1--z2--cycle withcolor blue ; >>> \stopMPcode >>> \stoptext >>> >>> However I would like to have a macro, for instance named Triangle, which accepts four arguments z0,z1, length_1, length_2, so that in a MetaPost code i can use >>> draw Triangle(z0,z1, 4, 3) withcolor blue ; >>> in order to draw the above triangle. >>> Has anyone any idea about how to do this? >>> >>> Thanks in advance for your help: OK >>> ___________________________________________________________________________________ >>> If your question is of interest to others as well, please add an entry to the Wiki! >>> >>> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >>> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >>> archive : http://foundry.supelec.fr/projects/contextrev/ >>> wiki : http://contextgarden.net >>> ___________________________________________________________________________________ >>> >> ___________________________________________________________________________________ >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >> archive : http://foundry.supelec.fr/projects/contextrev/ >> wiki : http://contextgarden.net >> ___________________________________________________________________________________ > > %%%%%%%%%%%%%%%%%% > Otared Kavian > Département de Mathématiques > Université de Versailles Saint-Quentin > Bâtiment Fermat > 45 avenue des Etats Unis > 78035 Versailles cedex > > Téléphone: +33 1 39 25 46 42 > Secrétariat: +33 1 39 25 46 44 > Secrétariat: +33 1 39 25 46 46 > > e-mail: Otared.Kavian@math.uvsq.fr > > > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Metfun macro for triangle 2011-03-24 10:29 ` Stefan Müller @ 2011-03-24 13:16 ` Otared Kavian 2011-03-24 14:14 ` Aditya Mahajan 1 sibling, 0 replies; 6+ messages in thread From: Otared Kavian @ 2011-03-24 13:16 UTC (permalink / raw) To: mailing list for ConTeXt users [-- Attachment #1.1: Type: text/plain, Size: 6456 bytes --] Hi Stefan, Thanks for your explanations: everything works as expected and your solution is very instructive for me. Later this weekend I'll put it on the wiki. Have a nice day. Best regards: OK On 24 mars 2011, at 11:29, Stefan Müller wrote: > > > On 24.03.2011 10:57, Otared Kavian wrote: >> Hi Stefan, >> >> Thanks for the quick answer and solution! >> Your solution works perfectly in mkiv; however typesetting with mkii results in >> ! Undefined control sequence. >> l.3 \startMPdefinitions >> Is there a solution with mkii? > > Then just drop the MPdefinitions section and put the complete vardef before your normal mp code in the MPcode section. That should work, I think. > >> May I ask one more question? >> In the macro you wrote >> Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) >> one has to specify the double of the length of each side (because a unit circle in MetaPost is a circle having diameter one). Would it be possible to change slightly the lines > > Now that's strange... But I see what you mean. I didn't notice. > >> p := fullcircle scaled la shifted za ; >> q := fullcircle scaled lb shifted zb ; >> so that la and lb are replaced with their doubled values? I tried >> p := fullcircle scaled 2*la shifted za ; > > Yeah, you need parentheses here, because otherwise Metapost tries to scale by 2 and then doesn't know how to multiply the result (the path "fullcircle scaled 2") with "la". > > p := fullcircle scaled (2 * la) shifted za ; > q := fullcircle scaled (2 * lb) shifted zb ; > > >> but this does not work. >> >> Thanks for your attention: OK > > np, Stefan. > >> On 24 mars 2011, at 10:29, Stefan Müller wrote: >> >>> Hi, >>> >>> what about >>> >>> \startMPdefinitions >>> vardef Triangle(expr za, zb, la, lb) = >>> path p, q ; >>> pair zc ; >>> pickup pencircle scaled 2mm ; >>> drawdot za ; >>> drawdot zb ; >>> p := fullcircle scaled la shifted za ; >>> q := fullcircle scaled lb shifted zb ; >>> zc = p intersectionpoint q ; >>> drawdot zc ; >>> pickup pencircle scaled 1mm ; >>> za--zb--zc--cycle >>> enddef; >>> \stopMPdefinitions >>> >>> \starttext >>> \startMPcode >>> draw Triangle((0cm,0cm), (5cm,0cm), 8cm, 6cm) withcolor blue ; >>> \stopMPcode >>> \stoptext >>> >>> Stefan >>> >>> On 24.03.2011 09:59, Otared Kavian wrote: >>>> Hi all, >>>> >>>> I have a document in which I must draw several triangles for which two summits, say z0, z1, and the length of the two other sides are known, so that the third summit, say z2, is completly determined. >>>> In order to draw one triangle the following works fine: >>>> >>>> \setupcolors[state=start] >>>> \starttext >>>> \startMPcode >>>> z0 = (0cm,0cm) ; >>>> z1 = (5cm,0cm) ; >>>> path p, q ; >>>> pickup pencircle scaled 2mm ; >>>> drawdot z0 ; >>>> drawdot z1 ; >>>> p := halfcircle scaled 8 cm ; % twice the length of the second side at z0 >>>> p := p shifted z0 ; >>>> q := halfcircle scaled 6 cm ; % twice the length of the second side at z1 >>>> q := q shifted z1 ; >>>> z2 = p intersectionpoint q ; >>>> drawdot z2 ; >>>> pickup pencircle scaled 1mm ; >>>> draw z0--z1--z2--cycle withcolor blue ; >>>> \stopMPcode >>>> \stoptext >>>> >>>> However I would like to have a macro, for instance named Triangle, which accepts four arguments z0,z1, length_1, length_2, so that in a MetaPost code i can use >>>> draw Triangle(z0,z1, 4, 3) withcolor blue ; >>>> in order to draw the above triangle. >>>> Has anyone any idea about how to do this? >>>> >>>> Thanks in advance for your help: OK >>>> ___________________________________________________________________________________ >>>> If your question is of interest to others as well, please add an entry to the Wiki! >>>> >>>> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >>>> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >>>> archive : http://foundry.supelec.fr/projects/contextrev/ >>>> wiki : http://contextgarden.net >>>> ___________________________________________________________________________________ >>>> >>> ___________________________________________________________________________________ >>> If your question is of interest to others as well, please add an entry to the Wiki! >>> >>> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >>> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >>> archive : http://foundry.supelec.fr/projects/contextrev/ >>> wiki : http://contextgarden.net >>> ___________________________________________________________________________________ >> >> %%%%%%%%%%%%%%%%%% >> Otared Kavian >> Département de Mathématiques >> Université de Versailles Saint-Quentin >> Bâtiment Fermat >> 45 avenue des Etats Unis >> 78035 Versailles cedex >> >> Téléphone: +33 1 39 25 46 42 >> Secrétariat: +33 1 39 25 46 44 >> Secrétariat: +33 1 39 25 46 46 >> >> e-mail: Otared.Kavian@math.uvsq.fr >> >> >> >> >> ___________________________________________________________________________________ >> If your question is of interest to others as well, please add an entry to the Wiki! >> >> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context >> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net >> archive : http://foundry.supelec.fr/projects/contextrev/ >> wiki : http://contextgarden.net >> ___________________________________________________________________________________ >> > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to the Wiki! > > maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : http://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ %%%%%%%%%%%%%%%%%% Otared Kavian Département de Mathématiques Université de Versailles Saint-Quentin Bâtiment Fermat 45 avenue des Etats Unis 78035 Versailles cedex Téléphone: +33 1 39 25 46 42 Secrétariat: +33 1 39 25 46 44 Secrétariat: +33 1 39 25 46 46 e-mail: Otared.Kavian@math.uvsq.fr [-- Attachment #1.2: Type: text/html, Size: 21586 bytes --] [-- Attachment #2: Type: text/plain, Size: 486 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Metfun macro for triangle 2011-03-24 10:29 ` Stefan Müller 2011-03-24 13:16 ` Otared Kavian @ 2011-03-24 14:14 ` Aditya Mahajan 1 sibling, 0 replies; 6+ messages in thread From: Aditya Mahajan @ 2011-03-24 14:14 UTC (permalink / raw) To: mailing list for ConTeXt users [-- Attachment #1: Type: TEXT/PLAIN, Size: 679 bytes --] On Thu, 24 Mar 2011, Stefan Müller wrote: > > > On 24.03.2011 10:57, Otared Kavian wrote: >> Hi Stefan, >> >> Thanks for the quick answer and solution! >> Your solution works perfectly in mkiv; however typesetting with mkii >> results in >> ! Undefined control sequence. >> l.3 \startMPdefinitions >> Is there a solution with mkii? > > Then just drop the MPdefinitions section and put the complete vardef before > your normal mp code in the MPcode section. That should work, I think. Or you can use \startMPinclusions[+] .... \stopMPinclusions [+] appends to the existing content of MPinclusion, so you can have multiple such sections. Aditya [-- Attachment #2: Type: text/plain, Size: 486 bytes --] ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________ ^ permalink raw reply [flat|nested] 6+ messages in thread
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