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%======================================================================
% This is
% knight.mf
%
% Copyright (C) 1989-93 by Elmar Bartel.
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 1, or (at your option)
% any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
%======================================================================
%
def sympoint (expr p,d,a) =
% Come to point p in direction d + angel a, and leave symmetrical
% to d - a This gives us a peak in p pointing in direction d.
% sharpnes is specified by a. a= 0 no peak, a=90 real peak;
{dir (angle(d)+a)} p {dir(angle(d)+180-a)}
enddef;
def Ear(expr p,pd,q,qd,a,r,rd) =
p{pd} .. sympoint(q,qd,a) .. {rd}r
enddef;
def DefineKnightPath =
% we construct the path from right to left.
% Ie we begin with the nack and come then to the ears,
% the nose etc
z0 = (.33qs,BottomSpace); % The leftmost bottompoint
z1 = (qs-SideSpace,BottomSpace); % The right bottom edge
path Foot;
Foot = z0 -- z1;
% z2 will be later defined, it
% is the connection to the right
% ear
z4 = (.465qs,qs-TopSpace+.035qs); % The peak of the right ear
z3 = z4 + (.042qs,-0.12qs); % The right lower point of the
% right ear
z5 = z3 + (-.09qs,.015qs ); % The left lower point of the
% right ear
% Now comes the definition of the right ear
% There are two paths:
% RightEar: The complete path for the ear
% sRightEar: The subpath for the whole shape
path RightEar, sRightEar;
RightEar = Ear(z3,(1,10),z4,(0,1),35,z5,(1,-10));
sRightEar = subpath (.25,1.85) of RightEar;
z2 = point 0 of sRightEar; % The right
z6 = point 2 of sRightEar; % The left connection point of
% the right ear
% Now we can also define the nack
path Nack;
Nack = z1{up} .. tension 1 and 1 .. {left}z2;
z7 = z6 + (-.08qs,-0.05qs); % This is the point under the
% left ear
% Now the two pathes from the right to the left ear.
% EarUnderEar, goes from the right ear under the left ear
% EarToEar connects only the two ears
path EarUnderEar,EarToEar;
EarUnderEar= z6{left} .. {-5,-4}z7;
EarToEar = subpath (0,.4) of EarUnderEar;
z8 = point 1 of EarToEar; % The connection point and the
% start of the left ear
% to get easier definition of the following points
% we define a line bx from z7 (point under left ear) down to z13
% (leftmost point of shape) ie the begining of nose and mount
z13 = (SideSpace,0.41qs); % The leftmost point of the
% shape
pair bx,by;
bx = z13 - z7;
by = z13 rotatedabout (z7,-90);
z9 = z7 + .21bx + .21by; % the peak of the left ear
z10= z7 + .15bx + .08by; % the left point of the left ear
% Now the path for the leaft ear
path LeftEar;
LeftEar= Ear(z8,(-1,3),z9,(-1,2),20,z10,(2,-3));
z11 = z7 + .45bx + .10by;
z12 = z7 + .50bx + .06by;
z26 = z7 + .16bx - .02by; % the eye point
path Bless;
Bless = z10{dir(angle(bx)-15)} .. z11 .. z12 .. {down} z13;
% the points from z14 to z17 are defined via a line nx
% from z13 to z18
pair nx,ny;
z19 = (.255qs,.315qs);
nx = z19 - z13;
ny = nx rotatedabout ((0,0),90);
z14 = z13 + .30nx - .22ny; % the point between mouth
% and nose
z15 = z13 + .60nx - .15ny; % the upper point of mouth
z16 = z13 + .70nx + .31ny; % the inner point of mouth
z17 = z13 + .76nx - .02ny; %
z18 = z13 + .82nx - .07ny; %
z25 = z13 + .22nx + .28ny; % the location of the nose
path MouthNose;
MouthNose = z13 .. z14{nx} .. z15 ... sympoint(z16,(z16-z17),0)
... z17 .. z18 .. z19;
% the points from z20 to z23 are defined via a line nx
% from z19 to z23
pair ux,uy;
z23 = (.546qs,.64qs);
ux = z23 - z19;
uy = z23 rotatedabout (z19,90);
z20 = z19 + .15ux + .01uy;
z21 = z19 + .45ux - .02uy;
z22 = z19 + .90ux - .11uy;
path UnderMouth, sUnderMouth;
UnderMouth = z19..z20..z21..z22..{up}z23;
sUnderMouth = subpath (0,3) of UnderMouth;
z24 = z22 + (.008qs,-.05qs);
path ToFoot;
%ToFoot = z22..{down}z24 .. {down}z0;
ToFoot = z22..z24..{down}z0;
path KnightShape;
KnightShape = Foot & Nack & sRightEar & EarToEar
& LeftEar & Bless & MouthNose
& sUnderMouth & ToFoot & cycle;
enddef;
def DefineNosePath(expr p,s) =
begingroup
if proofing >0:
show p,s;
fi;
save z; pair z[];
z0 + (0,s) = p;
pair px,py;
py= p - z0;
px= py rotated -90;
z1= z0 + 0.10px + 0.50py;
z2= z0 + 0.70px + 1.00py;
z3= z0 + 0.70px + 1.60py;
z4= z0 + 0.10px + 2.10py;
z5= z0 - 0.20px + 1.90py;
z6= z0 - 0.60px + 0.50py;
z7= z0 - 0.60px + 0.10py;
z8= z0 - 0.50px + 0.00py;
forsuffixes i=0,1,2,3,4,5,6,7,8:
z[i]..
endfor cycle
endgroup
enddef;
def EyePath (expr p,s) =
begingroup
save z; pair z[];
z0 + (0,s) = p;
pair px,py;
py= p - z0;
px= py rotated -90;
z1= z0 + 1.00px + 1.00py;
z0{0,1} .. {1,0} z1 & z1 {0,-1} .. {-1,0}z0 & cycle
endgroup
enddef;
def EyeBrowPath (expr p,s) =
begingroup
save z; pair z[];
z0 + (0,s) = p;
pair px,py;
py= p - z0;
px= py rotated -90;
z1= z0 - 0.74px - 0.74py;
z2= z0 + 1.74px + 1.74py;
z1{0,1} .. {1,0}z2
endgroup
enddef;
def MakeWhiteKnight =
clearit;
pickup chess_pen;
draw Foot;
draw RightEar;
draw EarUnderEar;
draw LeftEar & Bless & MouthNose & UnderMouth;
draw ToFoot;
draw EyePath(z26,.025qs);
filldraw DefineNosePath(z25,.015qs);
pickup chess_pen xscaled 2 rotated -10;
draw ShortenEnd(Nack,thin);
pickup chess_pen scaled 0.6;
draw EyeBrowPath(z26,.030qs);
WhiteMan:= currentpicture;
enddef;
def MakeBlackKnight =
clearit;
pickup chess_pen;
filldraw KnightShape;
cullit;
unfilldraw DefineNosePath(z25,.015qs);
undraw EyePath(z26,.025qs);
undraw ParallelPath(EarUnderEar,1.2thin) rotatedaround(z6,-20);
pickup chess_pen xscaled 2 rotated -20;
undraw ShortenPath(xyParallelPath(Nack,1.5thin,thin),thin);
pickup chess_pen scaled .6;
undraw subpath (3,3.5) of UnderMouth;
undraw EyeBrowPath(z26,.030qs);
undraw subpath (2.5,3) of MouthNose;
BlackMan:= currentpicture;
enddef;
def MakeKnightSpace =
clearit;
pickup frame_pen;
filldraw KnightShape;
cullit;
OuterShape:= currentpicture;
enddef;
DefineKnightPath;
%DefineNosePath(z25,.2qs);
MakeWhiteKnight;
MakeBlackKnight;
MakeNeutral(WhiteMan,BlackMan);
MakeKnightSpace;
%===========================================================
% this one for testing
%beginchar(Knight+Black+OnBlack, qs#, qs#, 0);
% "White knight on black field";
% MakeBlackField;
% cullit;
% currentpicture:= currentpicture - OuterShape;
% cullit;
% currentpicture:= currentpicture + BlackMan;
%endchar;
%endinput
%===========================================================
beginchar(Knight+White+OnWhite, qs#, qs#, 0);
"White knight on white field";
currentpicture:= WhiteMan;
% labels(z0,z1l,z1,z1r,z2l,z2,z2r);
% labels(z3l,z3,z3l,z4,z5,z6l,z6r);
% labels(z7l,z7,z7r,z8);
endchar;
beginchar(Knight+White+OnWhite+LeftTurned, qs#, qs#, 0);
"White knight turned to the left on white field";
currentpicture:= TurnLeft(WhiteMan);
endchar;
beginchar(Knight+White+OnWhite+RightTurned, qs#, qs#, 0);
"White knight turned to the right on white field";
currentpicture:= TurnRight(WhiteMan);
endchar;
beginchar(Knight+White+OnWhite+UpSideDown, qs#, qs#, 0);
"White knight turned upsidedown on white field";
currentpicture:= TurnUpSideDown(WhiteMan);
endchar;
%===========================================================
beginchar(Knight+White+OnBlack, qs#, qs#, 0);
"White knight on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - OuterShape;
cullit;
currentpicture:= currentpicture + WhiteMan;
endchar;
beginchar(Knight+White+OnBlack+LeftTurned, qs#, qs#, 0);
"White knight turned to the left on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnLeft(OuterShape);
cullit;
currentpicture:= currentpicture + TurnLeft(WhiteMan);
endchar;
beginchar(Knight+White+OnBlack+RightTurned, qs#, qs#, 0);
"White knight turned to the right on black field";
MakeBlackField;
currentpicture:= currentpicture - TurnRight(OuterShape);
cullit;
currentpicture:= currentpicture + TurnRight(WhiteMan);
endchar;
beginchar(Knight+White+OnBlack+UpSideDown, qs#, qs#, 0);
"White knight turned upsidedown on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnUpSideDown(OuterShape);
cullit;
currentpicture:= currentpicture + TurnUpSideDown(WhiteMan);
endchar;
%===========================================================
beginchar(Knight+Neutral+OnWhite, qs#, qs#, 0);
"Neutral knight on white field";
currentpicture:= NeutralMan;
endchar;
beginchar(Knight+Neutral+OnWhite+LeftTurned, qs#, qs#, 0);
"Neutral knight turned to the left on white field";
currentpicture:= TurnLeft(NeutralMan);
endchar;
beginchar(Knight+Neutral+OnWhite+RightTurned, qs#, qs#, 0);
"Neutral knight turned to the right on white field";
currentpicture:= TurnRight(NeutralMan);
endchar;
beginchar(Knight+Neutral+OnWhite+UpSideDown, qs#, qs#, 0);
"Neutral knight turned upsidedown on white field";
currentpicture:= TurnUpSideDown(NeutralMan);
endchar;
%===========================================================
beginchar(Knight+Neutral+OnBlack, qs#, qs#, 0);
"Neutral knight on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - OuterShape;
cullit;
currentpicture:= currentpicture + NeutralMan;
endchar;
beginchar(Knight+Neutral+OnBlack+LeftTurned, qs#, qs#, 0);
"Neutral knight turned to the left on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnLeft(OuterShape);
cullit;
currentpicture:= currentpicture + TurnLeft(NeutralMan);
endchar;
beginchar(Knight+Neutral+OnBlack+RightTurned, qs#, qs#, 0);
"Neutral knight turned to the right on black field";
MakeBlackField;
currentpicture:= currentpicture - TurnRight(OuterShape);
cullit;
currentpicture:= currentpicture + TurnRight(NeutralMan);
endchar;
beginchar(Knight+Neutral+OnBlack+UpSideDown, qs#, qs#, 0);
"Neutral knight turned upsidedown on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnUpSideDown(OuterShape);
cullit;
currentpicture:= currentpicture + TurnUpSideDown(NeutralMan);
endchar;
%===========================================================
beginchar(Knight+Black+OnWhite, qs#, qs#, 0);
"Black knight on white field";
currentpicture:= BlackMan;
endchar;
beginchar(Knight+Black+OnWhite+LeftTurned, qs#, qs#, 0);
"Black knight turned to the left on white field";
currentpicture:= TurnLeft(BlackMan);
endchar;
beginchar(Knight+Black+OnWhite+RightTurned, qs#, qs#, 0);
"Black knight turned to the right on white field";
currentpicture:= TurnRight(BlackMan);
endchar;
beginchar(Knight+Black+OnWhite+UpSideDown, qs#, qs#, 0);
"Black knight turned upsidedown on white field";
currentpicture:= TurnUpSideDown(BlackMan);
endchar;
%===========================================================
beginchar(Knight+Black+OnBlack, qs#, qs#, 0);
"Black knight on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - OuterShape;
cullit;
currentpicture:= currentpicture + BlackMan;
endchar;
beginchar(Knight+Black+OnBlack+LeftTurned, qs#, qs#, 0);
"Black knight turned to the left on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnLeft(OuterShape);
cullit;
currentpicture:= currentpicture + TurnLeft(BlackMan);
endchar;
beginchar(Knight+Black+OnBlack+RightTurned, qs#, qs#, 0);
"Black knight turned to the right on black field";
MakeBlackField;
currentpicture:= currentpicture - TurnRight(OuterShape);
cullit;
currentpicture:= currentpicture + TurnRight(BlackMan);
endchar;
beginchar(Knight+Black+OnBlack+UpSideDown, qs#, qs#, 0);
"Black knight turned upsidedown on black field";
MakeBlackField;
cullit;
currentpicture:= currentpicture - TurnUpSideDown(OuterShape);
cullit;
currentpicture:= currentpicture + TurnUpSideDown(BlackMan);
endchar;
endinput
|
