Hi, Thanks to Hraban for providing spot->process color examples and Luigi and Taco for testing viewers Duncan can now do more advanced shades, that is, if he weren't using mkii. For this metafun has been extended with a few more shading commands, with the nicest being: path p ; p := fullsquare scaled 8cm shifted (20cm,-10cm) ; fill p withshading("linear",llcorner p,urcorner p) withcolor red shadedinto green ; Test file: \starttext \definecolor [blueish] [c=1,m=.38,y=0,k=.64] % pantone pms 2965 uncoated m \definecolor [yellowish] [c=0,m=.28,y=1,k=.06] % pantone pms 124 uncoated m \definespotcolor [blue-0] [blueish] [p=0.1] \definespotcolor [blue-50] [blueish] [p=0.5] \definespotcolor [blue-100] [blueish] [p=0.9] \definespotcolor [yellow-0] [yellowish] [p=0.1] \definespotcolor [yellow-50] [yellowish] [p=0.5] \definespotcolor [yellow-100] [yellowish] [p=0.9] \definemultitonecolor [somecolor] [blueish=.12,yellowish=.28] % [c=.1,m=.1,y=.3,k=.1] \definemultitonecolor [somecolor-1] [blueish=0,yellowish=1] \definemultitonecolor [somecolor-2] [blueish=1,yellowish=0] \definemultitonecolor [somecolor-3] [blueish=0.1,yellow=0.9] \definemultitonecolor [somecolor-4] [blueish=0.9,yellow=0.1] \definemultitonecolor [somecolor-5] [blueish=0.1,magenta=0.9,yellow=0.75,cyan=0.8] % [c=1] \definemultitonecolor [somecolor-6] [blueish=0.9,magenta=0.1,yellow=0.25,cyan=0.8] % [m=1] \startMPpage path p ; p := fullcircle scaled 10cm shifted (0cm,0) ; fill p withcolor \MPcolor{blue-100} ; path p ; p := fullcircle scaled 10cm shifted (5cm,0) ; fill p withcircularshading(center p,center p shifted (0,5cm),5cm,0) withcolor red shadedinto green ; fill p withshading("circular",center p,center p shifted (0,5cm),5cm,0) withcolor red shadedinto green ; path p ; p := fullcircle scaled 10cm shifted (10cm,0) ; fill p withcircularshading(center p,center p shifted (0,5cm),5cm,0) withfromshadecolor red withtoshadecolor green ; path p ; p := fullcircle scaled 10cm shifted (15cm,0) ; fill p withcircularshading(center p,center p shifted (0,5cm),5cm,0) withfromshadecolor \MPcolor{blue-0} withtoshadecolor \MPcolor{blue-100} ; path p ; p := fullcircle scaled 10cm shifted (20cm,0) ; fill p withcircularshading(center p,center p,5cm,0) withfromshadecolor \MPcolor{yellow-0} withtoshadecolor \MPcolor{yellow-50} ; path p ; p := fullcircle scaled 10cm shifted (0cm,-10cm) ; fill p withcolor \MPcolor{somecolor} ; path p ; p := fullcircle scaled 10cm shifted (5cm,-10cm) ; fill p withcircularshading(center p,center p shifted (0,5cm),10cm,0) withfromshadecolor \MPcolor{somecolor-2} withtoshadecolor \MPcolor{somecolor-1} ; path p ; p := fullcircle scaled 10cm shifted (10cm,-10cm) ; fill p withcircularshading(center p,center p shifted (0,5cm),10cm,0) withfromshadecolor \MPcolor{somecolor-3} withtoshadecolor \MPcolor{somecolor-4} ; path p ; p := fullcircle scaled 10cm shifted (15cm,-10cm) ; fill p withcircularshading(center p,center p shifted (0,5cm),10cm,0) withfromshadecolor \MPcolor{somecolor-6} withtoshadecolor \MPcolor{somecolor-5} ; path p ; p := fullsquare scaled 8cm shifted (20cm,-10cm) ; fill p withshading("linear",llcorner p,urcorner p) withcolor red shadedinto green ; \stopMPpage \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
For this metafun has been extended with a few more shading commands, with the nicest being: […]
Very nice these commands! I like them. But the shadings in MP still have problems with transparency. Example below. I guess, it's not supported. If not, are you planing to add it or is it unlikely? \starttext \definecolor [red-t] [r=1, t=.6, a=normal] \definecolor [blue-t] [b=1, t=.4, a=normal] \startMPpage % Works path p; p:=fullsquare scaled 5cm; fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue}; % The entire square is transparent, % not just the shading part path p; p:=fullsquare scaled 5cm shifted (5cm, 0cm); fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue-t}; % Error % path p; p:=fullsquare scaled 5cm shifted (10cm, 0cm); % fill p % withshading("linear", llcorner p, urcorner p) % withcolor \MPcolor{red-t} shadedinto \MPcolor{blue}; \stopMPpage \stoptext Marco
Am 2011-05-18 um 20:30 schrieb Marco:
For this metafun has been extended with a few more shading commands, with the nicest being: […]
Very nice these commands! I like them.
But the shadings in MP still have problems with transparency. Example below.
I guess, it's not supported. If not, are you planing to add it or is it unlikely?
Transparency, combined with spot colors and gradients, is really tricky. Maybe not so much in MP, but at least in InDesign you must know how you export your PDFs to get expected and printable (i.e. color separable) results. Hans, do you need another example? Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer)
On 18-5-2011 8:55, Henning Hraban Ramm wrote:
Am 2011-05-18 um 20:30 schrieb Marco:
For this metafun has been extended with a few more shading commands, with the nicest being: […]
Very nice these commands! I like them.
But the shadings in MP still have problems with transparency. Example below.
I guess, it's not supported. If not, are you planing to add it or is it unlikely?
Transparency, combined with spot colors and gradients, is really tricky. Maybe not so much in MP, but at least in InDesign you must know how you export your PDFs to get expected and printable (i.e. color separable) results. Hans, do you need another example?
no, transparency does not relate to shades (i.e. is not part of the shading function) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 18-5-2011 8:30, Marco wrote:
% The entire square is transparent, % not just the shading part path p; p:=fullsquare scaled 5cm shifted (5cm, 0cm); fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue-t};
indeed, as transparency is independent of shading
% Error % path p; p:=fullsquare scaled 5cm shifted (10cm, 0cm); % fill p % withshading("linear", llcorner p, urcorner p) % withcolor \MPcolor{red-t} shadedinto \MPcolor{blue};
for the moment use withfromshadecolor ... (i need to discuss the other variant with taco as it involves the mp parser) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 18-5-2011 8:30, Marco wrote:
% Error % path p; p:=fullsquare scaled 5cm shifted (10cm, 0cm); % fill p % withshading("linear", llcorner p, urcorner p) % withcolor \MPcolor{red-t} shadedinto \MPcolor{blue};
don't ask how, but the upcoming beta can handle it \starttext \definecolor [red-t] [r=1,t=.6,a=1] \definecolor [blue-t] [b=1,t=.4,a=1] \startMPpage path p ; p := fullsquare scaled 6cm ; fill p ; path p ; p := fullsquare scaled 6cm shifted (-4cm,-4cm); fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue} ; path p ; p := fullsquare scaled 6cm shifted (4cm,4cm) ; fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue} withtransparency(1,.5) ; path p ; p := fullsquare scaled 6cm shifted (-4cm,4cm) ; fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{red} shadedinto \MPcolor{blue-t}; path p ; p := fullsquare scaled 6cm shifted (4cm,-4cm) ; fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{blue-t} shadedinto \MPcolor{red}; % withfromshadecolor \MPcolor{blue-t} withtoshadecolor \MPcolor{red}; \stopMPpage \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 2011-05-18 Hans Hagen
On 18-5-2011 8:30, Marco wrote:
% Error % path p; p:=fullsquare scaled 5cm shifted (10cm, 0cm); % fill p % withshading("linear", llcorner p, urcorner p) % withcolor \MPcolor{red-t} shadedinto \MPcolor{blue};
don't ask how, but the upcoming beta can handle it
\starttext […]
Thanks a lot. But I'm still a bit lost in all the new commands. I can't figure out how to shade from a particular colour to transparent. \starttext \definecolor [trans-t] [t=1, a=normal] \startMPpage path p; p:=fullsquare scaled 5cm; fill p withcolor \MPcolor{red}; % Works if background colour is known and uniform path p; p:=fullsquare scaled 3cm; fill p withshading("linear", llcorner p, urcorner p) withcolor \MPcolor{blue} shadedinto \MPcolor{red}; path p; p:=fullsquare scaled 5cm shifted (5cm, 0cm); fill p withcolor \MPcolor{red}; % Shades to white path p; p:=fullsquare scaled 3cm shifted (5cm, 0cm); fill p withshading("linear", llcorner p, urcorner p) withfromshadecolor \MPcolor{blue} withtoshadecolor \MPcolor{trans-t}; \stopMPpage \stoptext Marco
On 19-5-2011 12:08, Marco wrote:
new commands. I can't figure out how to shade from a particular colour to transparent.
afaik you can't as one shades from color to color (maybe choosing another transparency method) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 2011-05-19 Hans Hagen
On 19-5-2011 12:08, Marco wrote:
new commands. I can't figure out how to shade from a particular colour to transparent.
afaik you can't as one shades from color to color (maybe achoosing nother transparency method)
As soon as transparency (the method doesn't matter) is involved, the transparent colour component turns into either black or white (depending on the method). Shading only works well with uniform colours, however the entire path can be made transparent, not the single shading colour components. Best regards Marco
participants (3)
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Hans Hagen -
Henning Hraban Ramm -
Marco