[Therion] boxed label

[Bruce Mutton]

Thanks Marco

Eventually the squeaky wheel gets oiled :)

Looks like it should work, but it seems to complain about setting the parsed attribute to a picture.

I will look some more when I have time tonight..

 

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>> unknown picture pic

>> thelabelboxed

! Equation cannot be performed (unknown picture=numeric).

<to be read again> 

Bruce

 

From: Therion <therion-bounces at speleo.sk> On Behalf Of Marco Corvi via Therion
Sent: Monday, 24 September 2018 21:16
To: therion at speleo.sk
Cc: Marco Corvi <marco.corvi at gmail.com>
Subject: [Therion] boxed label

 

hi bruce,

 

this is a boxed u:label

basically it gets the string as picture,

its bounding box corners, and define the x and y to draw the box, 

then draw the string picture

 

point 10 20 u:label -attr val 20

 

def p_u_label ( expr p,r,s,t ) =

  picture pic;

  pic := thelabel( ATTR_val, (0,0)) scaled s;

 pair q[]; numeric n[], m[], v;

 path bb;

 v := defaultscale;

 qO = ulcorner pic;

 q1 = lrcorner pic;

 nO := ypart q0 + 2.5 * v;

 n1 := ypart q1 - 1.5*v;

 m0 := xpart q0 - v;

 m1 := xpart q1 + 1.5*v;

bb := (m0,n0) -- (m0,n1) -- (m1,n1) -- (m1,n0) -- cycle;

draw bb  rotated r shifted p;

draw pic rotated r shifted p;

enddef;

 

 

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