I guess the code I am looking for is the below to hatch the cut-out
section. How can I load the MetaPost hatching package in Context minimals
so it understands the hatchfill command?

Thanks
Jeroen

\startMPinclusions

input hatching;

\stopMPinclusions


\starttext


\placefigure[here,force][fig:tubing]{Tubular Linear Volumetric Capacity}

{\startMPcode


% inner circle

draw fullcircle xscaled 2.5cm yscaled 0.7cm shifted (1.25cm,0);

draw (0,0) -- (0,-5cm) dashed evenly;

draw (2.5cm,0) -- (2.5cm,-5cm) dashed evenly;

draw fullcircle xscaled 2.5cm yscaled 0.7cm shifted (1.25cm,-5cm) dashed
evenly;


%outer circle

draw fullcircle xscaled 2.9cm yscaled 1cm shifted (1.25cm,0);

draw (-.2cm,0) -- (-.2cm,-5cm);

draw (2.7cm,0) -- (2.7cm,-5cm);

draw halfcircle scaled 2.9cm yscaled 0.012cm shifted (1.25cm,-5cm) dashed
evenly;

draw halfcircle scaled 2.9cm yscaled 0.012cm rotated 180 shifted
(1.25cm,-5cm);


%cut-out section

hatchfill circle withcolor (45, 5mm, -.5bp);

fill fullcircle xscaled 2.5cm yscaled 0.7cm shifted (1.25cm,-2.7cm)
withcolor (.6,.6,.6);

label.top("tubular",(1.26cm,-1.3cm));

label.top("inside area",(1.28cm,-1.8cm));

label.top("($in^2$)",(1.28cm,-2.4cm));


%arrows and label ID

drawarrow (0,-4.1cm) -- (2.5cm,-4.1cm);

drawarrow (2.5cm,-4.1cm) -- (0,-4.1cm);

label.top("ID ($in$)",(1.26cm,-4.15cm));


%arrows and label tubular length

draw (3.25cm,-5cm) -- (3.25cm,0);

drawarrow (3.25cm,-5) -- (3.25cm,0);

drawarrow (3.25cm,0) -- (3.25cm,-5cm);

label.top("tubular length ($in$)",(5.2cm,-2.75cm));


\stopMPcode}


\stoptext

2015-12-06 21:54 GMT+01:00 Context NTG <contextntg@gmail.com>:

> I am trying to graph a cylinder. Is there a way to draw a more elliptic
> top/bottom. This one seems some flattened at the top and bottom. I would
> like to hatch the mid elliptic that is collored grey now. Is there a way to
> do this.
>
> Thanks
> Jeroen
>
>
>
> \placefigure
>
> [here,force]
>
> [fig:tubing]
>
> {Tubular Linear Volumetric Capacity}
>
> {\startMPcode
>
>
> draw (0,0){up} ... (1.25cm, 2mm) ... (2.5cm,0){down} ... (1.25cm, -2mm)
> ... cycle;
>
> draw (0,0) -- (0,-5cm) dashed evenly;
>
> draw (2.5cm,0) -- (2.5cm,-5cm) dashed evenly;
>
> draw (0,-5cm){up} ... (1.25cm, -4.8cm) ... (2.5cm,-5cm){down} ... (1.25cm,
> -5.2cm) ... cycle dashed evenly;
>
>
> draw (-.2cm,0){up} ... (1.25cm, 3.5mm) ... (2.7cm,0){down} ... (1.25cm,
> -3.5mm) ... cycle;
>
> draw (-.2cm,0) -- (-.2cm,-5cm);
>
> draw (2.7cm,0) -- (2.7cm,-5cm);
>
> draw (-.2cm,-5cm){up} ... (1.25cm, -4.7cm) ... (2.7cm,-5cm){down} dashed
> evenly;
>
> draw (-.2cm,-5cm){down} ... (1.25cm, -5.3cm) ... (2.7cm,-5cm){up};
>
>
> fill (0,-2.5cm){up} ... (1.25cm, -2.3cm) ... (2.5cm,-2.5cm){down} ...
> (1.25cm, -2.7cm) ... cycle withcolor (.6,.6,.6) dashed evenly;
>
> label.top("tubular",(1.26cm,-1.1cm));
>
> label.top("inside area",(1.28cm,-1.6cm));
>
> label.top("($in^2$)",(1.28cm,-2.2cm));
>
>
> draw (3.25cm,-5cm) -- (3.25cm,0);
>
> drawarrow (3.25cm,-5) -- (3.25cm,0);
>
> drawarrow (3.25cm,0) -- (3.25cm,-5cm);
>
> label.top("tubular length ($in$)",(5.2cm,-2.75cm));
>
>
> \stopMPcode}
>