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author | Context Git Mirror Bot <phg42.2a@gmail.com> | 2016-01-12 17:15:07 +0100 |
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committer | Context Git Mirror Bot <phg42.2a@gmail.com> | 2016-01-12 17:15:07 +0100 |
commit | 8d8d528d2ad52599f11250cfc567fea4f37f2a8b (patch) | |
tree | 94286bc131ef7d994f9432febaf03fe23d10eef8 /metapost/context/base/mp-char.mpiv | |
parent | f5aed2e51223c36c84c5f25a6cad238b2af59087 (diff) | |
download | context-8d8d528d2ad52599f11250cfc567fea4f37f2a8b.tar.gz |
2016-01-12 16:26:00
Diffstat (limited to 'metapost/context/base/mp-char.mpiv')
-rw-r--r-- | metapost/context/base/mp-char.mpiv | 1116 |
1 files changed, 0 insertions, 1116 deletions
diff --git a/metapost/context/base/mp-char.mpiv b/metapost/context/base/mp-char.mpiv deleted file mode 100644 index f604accd8..000000000 --- a/metapost/context/base/mp-char.mpiv +++ /dev/null @@ -1,1116 +0,0 @@ -%D \module -%D [ file=mp-char.mpiv, -%D version=2011.10.1, % 1998.10.10, -%D title=\CONTEXT\ \METAPOST\ graphics, -%D subtitle=charts, -%D author=Hans Hagen, -%D date=\currentdate, -%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] -%C -%C This module is part of the \CONTEXT\ macro||package and is -%C therefore copyrighted by \PRAGMA. See licen-en.pdf for -%C details. - -%D This is ancient code .. but I see no need to rewrite it. This is -%D already a partial rewrite but more could be delegated to \LUA\ -%D when used in \CONTEXT\ but it does not pay off now to look into -%D that. - -%D For historic reason we first build and then flush but we could -%D as well flush directly which would save us caching. - -if unknown context_shap : input "mp-shap.mpiv" ; fi ; -if known context_flow : endinput ; fi ; - -boolean context_flow ; context_flow := true ; - -%D settings - -numeric flow_grid_width ; flow_grid_width := 60pt ; -numeric flow_shape_width ; flow_shape_width := 45pt ; -numeric flow_grid_height ; flow_grid_height := 40pt ; -numeric flow_shape_height ; flow_shape_height := 30pt ; -numeric flow_chart_offset ; flow_chart_offset := 2pt ; -color flow_chart_background_color ; flow_chart_background_color := white ; -boolean flow_show_mid_points ; flow_show_mid_points := false ; -boolean flow_show_con_points ; flow_show_con_points := false ; -boolean flow_show_all_points ; flow_show_all_points := false ; -numeric flow_shape_line_width ; flow_shape_line_width := 2pt ; -color flow_shape_line_color ; flow_shape_line_color := .5white ; -color flow_shape_fill_color ; flow_shape_fill_color := .9white ; -color flow_connection_line_color ; flow_connection_line_color := .2white ; - -numeric flow_connection_line_width ; flow_connection_line_width := flow_shape_line_width ; - -numeric flow_connection_smooth_size ; flow_connection_smooth_size := 5pt ; -numeric flow_connection_arrow_size ; flow_connection_arrow_size := 4pt ; -numeric flow_connection_dash_size ; flow_connection_dash_size := 3pt ; - -numeric flow_max_x ; flow_max_x := 6 ; -numeric flow_max_y ; flow_max_y := 4 ; - -boolean flow_smooth ; flow_smooth := true ; -boolean flow_peepshape ; flow_peepshape := false ; -boolean flow_arrowtip ; flow_arrowtip := true ; -boolean flow_dashline ; flow_dashline := false ; -boolean flow_forcevalid ; flow_forcevalid := false ; -boolean flow_touchshape ; flow_touchshape := false ; -boolean flow_showcrossing ; flow_showcrossing := false ; -boolean flow_reverse_y ; flow_reverse_y := true ; - -picture flow_dash_pattern ; flow_dash_pattern := nullpicture ; - -numeric flow_shape_node ; flow_shape_node := 0 ; -numeric flow_shape_action ; flow_shape_action := 24 ; -numeric flow_shape_procedure ; flow_shape_procedure := 5 ; -numeric flow_shape_product ; flow_shape_product := 12 ; -numeric flow_shape_decision ; flow_shape_decision := 14 ; -numeric flow_shape_archive ; flow_shape_archive := 19 ; -numeric flow_shape_loop ; flow_shape_loop := 35 ; -numeric flow_shape_wait ; flow_shape_wait := 6 ; -numeric flow_shape_subprocedure ; flow_shape_subprocedure := 20 ; -numeric flow_shape_singledocument ; flow_shape_singledocument := 32 ; -numeric flow_shape_multidocument ; flow_shape_multidocument := 33 ; -numeric flow_shape_right ; flow_shape_right := 66 ; -numeric flow_shape_left ; flow_shape_left := 67 ; -numeric flow_shape_up ; flow_shape_up := 68 ; -numeric flow_shape_down ; flow_shape_down := 69 ; - -numeric flow_label_offset ; flow_label_offset := 0 ; -numeric flow_exit_offset ; flow_exit_offset := 0 ; -numeric flow_comment_offset ; flow_comment_offset := 0 ; - -% vardef some_shape_path (expr type) == imported from mp-shap - -def flow_show_shapes(expr n) = - flow_begin_chart(n,8,10) ; - flow_show_con_points := true ; - for i=0 upto 7 : - for j=0 upto 9 : - flow_new_shape(i+1,j+1,i*10+j); - endfor ; - endfor ; - flow_end_chart ; -enddef ; - -%D connections - -def flow_new_chart = - - flow_grid_width := 60pt ; - flow_shape_width := 45pt ; - flow_grid_height := 40pt ; - flow_shape_height := 30pt ; - flow_chart_offset := 2pt ; - flow_chart_background_color := white ; - flow_show_mid_points := false ; - flow_show_con_points := false ; - flow_show_all_points := false ; - flow_shape_line_width := 2pt ; - flow_shape_line_color := .5white ; - flow_shape_fill_color := .9white ; - flow_connection_line_color := .2white ; - flow_connection_line_width := flow_shape_line_width ; - flow_connection_smooth_size := 5pt ; - flow_connection_arrow_size := 4pt ; - flow_connection_dash_size := 3pt ; - flow_label_offset := 0 ; - flow_exit_offset := 0 ; - flow_comment_offset := 0 ; - - flow_max_x := 6 ; - flow_max_y := 4 ; - - flow_smooth := true ; - flow_peepshape := false ; - flow_arrowtip := true ; - flow_dashline := false ; - flow_forcevalid := false ; - flow_touchshape := false ; - flow_showcrossing := false ; - flow_reverse_y := true ; - - flow_dash_pattern := nullpicture ; - - numeric flow_xypoint ; flow_xypoint := 0 ; - numeric flow_cpath ; flow_cpath := 0 ; - - pair flow_xypoints [] ; - boolean flow_xyfree [][] ; - path flow_xypath [][] ; - numeric flow_xysx [][] ; - numeric flow_xysy [][] ; - color flow_xyfill [][] ; - color flow_xydraw [][] ; - numeric flow_xyline [][] ; - boolean flow_xypeep [][] ; - picture flow_xytext [][] ; - picture flow_xylabel [][] ; - picture flow_xyexit [][] ; - picture flow_xycomment [][] ; - path flow_cpaths [] ; - numeric flow_cline [] ; - color flow_ccolor [] ; - boolean flow_carrow [] ; - boolean flow_cdash [] ; - boolean flow_ccross [] ; - picture flow_tpicture [][] ; - picture flow_bpicture [][] ; - picture flow_lpicture [][] ; - picture flow_rpicture [][] ; - path flow_connections[][][] ; - - predefined_shapes[61] := (fullcircle scaled (1.5*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ; - predefined_shapes[62] := (fullcircle scaled (2.0*predefined_shapes_yradius) xscaled (flow_grid_height/flow_grid_width)) ; - -enddef ; - -flow_new_chart ; - -def flow_y_pos(expr y) = -% if flow_reverse_y : - flow_max_y + 1 - y -% else : -% y -% fi -enddef ; - -def flow_initialize_grid(expr maxx, maxy) = - flow_max_x := maxx ; - flow_max_y := maxy ; - flow_dsp_x := 0 ; - flow_dsp_y := 0 ; - for x=1 upto flow_max_x : - for y=1 upto flow_max_y : - flow_xyfree[x][y] := true ; - flow_xyfill[x][y] := flow_shape_fill_color ; - flow_xydraw[x][y] := flow_shape_line_color ; - flow_xyline[x][y] := flow_shape_line_width ; - endfor ; - endfor ; -enddef ; - -def flow_scaled_to_grid = - xscaled flow_grid_width yscaled flow_grid_height -enddef ; - -def flow_xy_offset(expr x, y) = - (x+.5,y+.5) -enddef ; - -def flow_draw_shape(expr x, yy, p, sx, sy) = - begingroup ; - save y ; numeric y ; - y := flow_y_pos(yy) ; - flow_xypath [x][y] := (p xscaled sx yscaled sy) shifted flow_xy_offset(x,y) ; - flow_xyfree [x][y] := false ; - flow_xysx [x][y] := sx ; - flow_xysy [x][y] := sy ; - flow_xyfill [x][y] := flow_shape_fill_color ; - flow_xydraw [x][y] := flow_shape_line_color ; - flow_xyline [x][y] := flow_shape_line_width ; - flow_xypeep [x][y] := flow_peepshape ; - endgroup ; -enddef ; - -vardef flow_i_point (expr x, y, p, t) = - begingroup ; - save q, ok ; pair q ; boolean ok ; - q := flow_xypath[x][y] intersection_point ((p) shifted flow_xy_offset(x,y)) ; - ok := true ; - if not ok : - message (t & " of shape (" & decimal x & "," & decimal y & ") limited") ; - fi ; - q - endgroup -enddef ; - -vardef flow_trimmed (expr x, y, z, t) = - if flow_touchshape and t : - flow_xyline[x][y]/z - else : - epsilon - fi -enddef ; - -numeric flow_zfactor ; flow_zfactor := 1/3 ; - -vardef flow_xy_bottom (expr x, y, z, t) = - flow_i_point(x, y, ((0,0)--(0,-2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "bottom") - shifted(0,-flow_trimmed(x,y,flow_grid_height,t)) -enddef ; - -vardef flow_xy_top (expr x, y, z, t) = - flow_i_point (x, y, ((0,0)--(0,2)) shifted (flow_zfactor*z*flow_xysx[x][y],0), "top") - shifted(0,flow_trimmed(x,y,flow_grid_height,t)) -enddef ; - -vardef flow_xy_left (expr x, y, z, t) = - flow_i_point (x, y, ((0,0)--(-2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "left") - shifted(-flow_trimmed(x,y,flow_grid_width,t),0) -enddef ; - -vardef flow_xy_right (expr x, y, z, t) = - flow_i_point (x, y, ((0,0)--(2,0)) shifted (0,flow_zfactor*z*flow_xysy[x][y]), "right") - shifted(flow_trimmed(x,y,flow_grid_width,t),0) -enddef ; - -def flow_flush_shapes = - for x=1 upto flow_max_x : - for y=1 upto flow_max_y : - flow_flush_shape(x, y) ; - endfor ; - endfor ; -enddef ; - -def flow_flush_pictures = - for x=1 upto flow_max_x : - for y=1 upto flow_max_y : - flow_flush_picture(x, y) ; - endfor ; - endfor ; -enddef ; - -def flow_draw_connection_point(expr x, y, z) = - pickup pencircle scaled if (z=0): 2 fi flow_xyline[x][y] ; - drawdot flow_xy_bottom(x,y,z,false) flow_scaled_to_grid withcolor (1,0,0) ; - drawdot flow_xy_top (x,y,z,false) flow_scaled_to_grid withcolor (0,1,0) ; - drawdot flow_xy_left (x,y,z,false) flow_scaled_to_grid withcolor (0,0,1) ; - drawdot flow_xy_right (x,y,z,false) flow_scaled_to_grid withcolor (1,1,0) ; -enddef ; - -def flow_flush_shape(expr x, yy) = - begingroup ; - save y ; numeric y ; - y := flow_y_pos(yy) ; - if not flow_xyfree[x][y] : - pickup pencircle scaled flow_xyline[x][y] ; - if flow_xypeep[x][y] : - fill (flow_xypath[x][y] peepholed (unitsquare shifted (x,y))) - flow_scaled_to_grid withpen pencircle scaled 0 - withcolor flow_chart_background_color ; - else : - fill flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xyfill[x][y] ; - fi ; - draw flow_xypath[x][y] flow_scaled_to_grid withcolor flow_xydraw[x][y] ; - if flow_show_con_points or flow_show_all_points : - flow_draw_connection_point(x, y, 0) ; - fi ; - if flow_show_all_points : - for i=-1 upto 1 : - flow_draw_connection_point(x, y, i) ; - endfor ; - fi ; - fi ; - endgroup ; -enddef ; - -vardef flow_points_initialized(expr xfrom, yfrom, xto, yto, n) = - if unknown flow_xyfree[xfrom][yfrom] or unknown flow_xyfree[xto][yto] : - flow_xypoint := 0 ; false - elseif not flow_xyfree[xfrom][yfrom] and not flow_xyfree[xto][yto] : - flow_xypoint := n ; true - else : - flow_xypoint := 0 ; false - fi -enddef ; - -def flow_collapse_points = % this can become a core macro - begingroup ; - % remove redundant points - save n ; numeric n ; - n := 1 ; - for i=2 upto flow_xypoint : - if not (flow_xypoints[i] = flow_xypoints[n]) : - n := n + 1 ; - flow_xypoints[n] := flow_xypoints[i] - fi ; - endfor ; - flow_xypoint := n ; - % make straight lines - if flow_xypoints[2] = flow_xypoints[flow_xypoint-1] : - flow_xypoints[3] := flow_xypoints[flow_xypoint] ; - flow_xypoint := 3 ; - fi ; - endgroup ; -enddef ; - -vardef flow_smooth_connection(expr a,b) = - if ypart a = ypart b : - a shifted ( if xpart a >= xpart b : - fi (flow_connection_smooth_size/flow_grid_width ),0) - else : - a shifted (0,if ypart a >= ypart b : - fi (flow_connection_smooth_size/flow_grid_height) ) - fi -enddef ; - -vardef flow_trim_points = - begingroup - save p, a, b, d, i ; numeric a, b ; path p ; pair d ; - p := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ; - if flow_touchshape : - a := flow_shape_line_width/flow_grid_width ; - b := flow_shape_line_width/flow_grid_height ; - else : - a := epsilon ; - b := epsilon ; - fi ; - d := direction infinity of p ; - flow_xypoints[flow_xypoint] := flow_xypoints[flow_xypoint] shifted - if xpart d < 0 : (+a,0) ; - elseif xpart d > 0 : (-a,0) ; - elseif ypart d < 0 : (0,+b) ; - elseif ypart d > 0 : (0,-b) ; - else : origin ; - fi ; - d := direction 0 of p ; - flow_xypoints[1] := flow_xypoints[1] shifted - if xpart d < 0 : (-a,0) ; - elseif xpart d > 0 : (+a,0) ; - elseif ypart d < 0 : (0,-b) ; - elseif ypart d > 0 : (0,+b) ; - else : origin ; - fi ; - endgroup -enddef ; - -vardef flow_trim_points = enddef ; - -vardef flow_connection_path = - if flow_reverse_connection : reverse fi (flow_xypoints[1] -- - for i=2 upto flow_xypoint-1 : - if flow_smooth : - flow_smooth_connection(flow_xypoints[i],flow_xypoints[i-1]) .. - controls flow_xypoints[i] and flow_xypoints[i] .. - flow_smooth_connection(flow_xypoints[i],flow_xypoints[i+1]) -- - else : - flow_xypoints[i] -- - fi - endfor - flow_xypoints[flow_xypoint]) -enddef ; - -def flow_draw_connection(expr i,xfrom,yfrom,xto,yto) = % 'i' is a comment reference - if flow_xypoint > 0 : - flow_collapse_points ; - flow_trim_points ; - flow_cpath := flow_cpath + 1 ; % maybe also store as x,y - flow_cpaths[flow_cpath] := flow_connection_path flow_scaled_to_grid ; - flow_cline[flow_cpath] := flow_connection_line_width ; - flow_ccolor[flow_cpath] := flow_connection_line_color ; - flow_carrow[flow_cpath] := flow_arrowtip ; - flow_cdash[flow_cpath] := flow_dashline ; - flow_ccross[flow_cpath] := flow_showcrossing ; - if flow_reverse_connection : - flow_connections[xto] [yto] [i] := flow_cpaths[flow_cpath] ; - else : - flow_connections[xfrom][yfrom][i] := flow_cpaths[flow_cpath] ; - fi ; - else : - message("no connection defined") ; - fi ; - flow_reverse_connection := false ; -enddef ; - -def flow_flush_connections = % protect locals - begingroup ; - save ip, crossing, cp ; numeric ip ; boolean crossing ; path cp ; - ahlength := flow_connection_arrow_size ; - flow_dash_pattern := dashpattern(on flow_connection_dash_size off flow_connection_dash_size) ; - for i=1 upto flow_cpath : - if flow_ccross[i] : - crossing := false ; - for j=1 upto i : - if not (point infinity of flow_cpaths[i] = point infinity of flow_cpaths[j]) : - ip := flow_cpaths[i] intersection_point flow_cpaths[j] ; - if intersection_found : crossing := true fi ; - fi ; - endfor ; - if crossing : - pickup pencircle scaled 2flow_cline[i] ; - cp := flow_cpaths[i] ; - cp := cp cutbefore point .05 length cp of cp ; - cp := cp cutafter point .95 length cp of cp ; - draw cp withcolor flow_chart_background_color ; - fi ; - fi ; - pickup pencircle scaled flow_cline[i] ; - if flow_carrow[i] : - if flow_cdash[i] : - drawarrow flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ; - else : - drawarrow flow_cpaths[i] withcolor flow_ccolor[i] ; - fi ; - else : - if flow_cdash[i] : - draw flow_cpaths[i] withcolor flow_ccolor[i] dashed flow_dash_pattern ; - else : - draw flow_cpaths[i] withcolor flow_ccolor[i] ; - fi ; - fi ; - flow_draw_midpoint(i) ; - endfor ; - endgroup ; -enddef ; - -def flow_draw_midpoint (expr n) = - begingroup - save p ; pair p ; - p := point .5*length(flow_cpaths[n]) of flow_cpaths[n]; - pickup pencircle scaled 2flow_cline[n] ; - if flow_show_mid_points : - drawdot p withcolor .7white ; - fi ; - endgroup ; -enddef ; - -def flow_flush_picture(expr x, yy) = - begingroup ; - save y ; numeric y ; - y := flow_y_pos(yy) ; % maybe move this to the makers - if known flow_xytext[x][y] : - draw flow_xytext[x][y] ; - fi ; - if known flow_xylabel[x][y] : - draw flow_xylabel[x][y] ; - fi ; - if known flow_xyexit[x][y] : - draw flow_xyexit[x][y] ; - fi ; - if known flow_xycomment[x][y] : - draw flow_xycomment[x][y] ; - fi ; - endgroup ; -enddef ; - -vardef flow_offset(expr x, y) = - flow_xy_offset((x+0.5)*flow_grid_width,(flow_max_y-y+1.5)*flow_grid_height) - shifted (-flow_xyline[x][y]/4,-flow_xyline[x][y]/4) % terrible hack (some compensation) -enddef ; - -def flow_chart_draw_text(expr x, y, p) = - if known flow_xytext[x][y] : - addto flow_xytext[x][y] also - else : - flow_xytext[x][y] := - fi - p shifted flow_offset(x,y) ; -enddef ; - -def flow_chart_draw_label (expr x, y, loc, txt) = - begingroup ; - save p, s ; path p ; picture s ; - p := fullsquare xscaled flow_grid_width yscaled flow_grid_height ; - p := p shifted flow_offset(x,y) ; - s := txt ; - setbounds s to boundingbox s enlarged flow_label_offset ; - if known flow_xylabel[x][y] : - addto flow_xylabel[x][y] also - else : - flow_xylabel[x][y] := - fi - if loc = "tr" : anchored.llft(s,0.5[ulcorner p,urcorner p]) ; - elseif loc = "t" : anchored.bot (s,0.5[ulcorner p,urcorner p]) ; - elseif loc = "tl" : anchored.lrt (s,0.5[ulcorner p,urcorner p]) ; - elseif loc = "br" : anchored.ulft(s,0.5[llcorner p,lrcorner p]) ; - elseif loc = "b" : anchored.top (s,0.5[llcorner p,lrcorner p]) ; - elseif loc = "bl" : anchored.urt (s,0.5[llcorner p,lrcorner p]) ; - elseif loc = "lb" : anchored.urt (s,0.5[ulcorner p,llcorner p]) ; - elseif loc = "l" : anchored.rt (s,0.5[ulcorner p,llcorner p]) ; - elseif loc = "lt" : anchored.lrt (s,0.5[ulcorner p,llcorner p]) ; - elseif loc = "rb" : anchored.ulft(s,0.5[urcorner p,lrcorner p]) ; - elseif loc = "r" : anchored.lft (s,0.5[urcorner p,lrcorner p]) ; - elseif loc = "rt" : anchored.llft(s,0.5[urcorner p,lrcorner p]) ; - else : anchored (s,center p) ; - fi ; - endgroup ; -enddef ; - -def flow_chart_draw_exit (expr x, y, loc, txt) = - begingroup ; - save p, s ; path p ; picture s ; - p := fullsquare xscaled flow_grid_width yscaled flow_grid_height ; - p := p shifted flow_offset(x,y) ; - s := txt ; - setbounds s to boundingbox s enlarged flow_exit_offset ; - if known flow_xyexit[x][y] : - addto flow_xyexit[x][y] also - else : - flow_xyexit[x][y] := - fi - if loc = "t" : anchored.top(s,0.5[ulcorner p,urcorner p]) ; - elseif loc = "b" : anchored.bot(s,0.5[llcorner p,lrcorner p]) ; - elseif loc = "l" : anchored.lft(s,0.5[ulcorner p,llcorner p]) ; - elseif loc = "r" : anchored.rt (s,0.5[urcorner p,lrcorner p]) ; - else : anchored (s,center p) ; - fi ; - endgroup ; -enddef ; - -def flow_chart_draw_comment (expr x, y, i, loc, len, txt) = % per connection - begingroup ; - if known flow_connections[x][y][i] : - save p, q, s ; path p, q ; picture s ; - p := fullsquare xscaled flow_shape_width yscaled flow_shape_height ; - p := p shifted flow_offset(x,y) ; - q := flow_connections[x][y][i] ; % already relocated - s := txt ; - setbounds s to boundingbox s enlarged flow_comment_offset ; - if known flow_xycomment[x][y] : - addto flow_xycomment[x][y] also - else : - flow_xycomment[x][y] := - fi - if loc = "tr" : anchored.llft(s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; - elseif loc = "t" : anchored.bot (s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; - elseif loc = "tl" : anchored.lrt (s,if len = 0 : 0.5[ulcorner p,urcorner p] else : point len along q fi) ; - elseif loc = "br" : anchored.ulft(s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "b" : anchored.top (s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "bl" : anchored.urt (s,if len = 0 : 0.5[llcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "lb" : anchored.urt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; - elseif loc = "l" : anchored.rt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; - elseif loc = "lt" : anchored.lrt (s,if len = 0 : 0.5[ulcorner p,llcorner p] else : point len along q fi) ; - elseif loc = "rb" : anchored.ulft(s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "r" : anchored.lft (s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "rt" : anchored.llft(s,if len = 0 : 0.5[urcorner p,lrcorner p] else : point len along q fi) ; - elseif loc = "tr:*" : anchored.llft(s,point 0 of q) ; - elseif loc = "t:*" : anchored.bot (s,point 0 of q) ; - elseif loc = "tl:*" : anchored.lrt (s,point 0 of q) ; - elseif loc = "br:*" : anchored.ulft(s,point 0 of q) ; - elseif loc = "b:*" : anchored.top (s,point 0 of q) ; - elseif loc = "bl:*" : anchored.urt (s,point 0 of q) ; - elseif loc = "lb:*" : anchored.urt (s,point 0 of q) ; - elseif loc = "l:*" : anchored.rt (s,point 0 of q) ; - elseif loc = "lt:*" : anchored.lrt (s,point 0 of q) ; - elseif loc = "rb:*" : anchored.ulft(s,point 0 of q) ; - elseif loc = "r:*" : anchored.lft (s,point 0 of q) ; - elseif loc = "rt:*" : anchored.llft(s,point 0 of q) ; - else : anchored (s,point 0 of q) ; - fi ; - fi ; - endgroup ; -enddef ; - -boolean flow_reverse_connection ; flow_reverse_connection := false ; - -vardef flow_up_on_grid (expr n) = - (xpart flow_xypoints[n],(ypart flow_xypoints[n]+1) div 1) -enddef ; - -vardef flow_down_on_grid (expr n) = - (xpart flow_xypoints[n],(ypart flow_xypoints[n]) div 1) -enddef ; - -vardef flow_left_on_grid (expr n) = - ((xpart flow_xypoints[n]) div 1, ypart flow_xypoints[n]) -enddef ; - -vardef flow_right_on_grid (expr n) = - ((xpart flow_xypoints[n]+1) div 1, ypart flow_xypoints[n]) -enddef ; - -vardef flow_x_on_grid (expr n, xfrom, xto, zfrom) = - if (xfrom = xto) and not (zfrom = 0) : - if (zfrom=1) : flow_right_on_grid(2) else : flow_left_on_grid(2) fi - elseif xpart flow_xypoints[1] < xpart flow_xypoints[6] : - flow_right_on_grid(n) - else : - flow_left_on_grid(n) - fi -enddef ; - -vardef flow_y_on_grid (expr n, yfrom, yto, zfrom) = - if (yfrom = yto) and not (zfrom = 0) : - if (zfrom = 1) : flow_up_on_grid(2) else : flow_down_on_grid(2) fi - elseif ypart flow_xypoints[1] < ypart flow_xypoints[6] : - flow_up_on_grid(n) - else : - flow_down_on_grid(n) - fi -enddef ; - -vardef flow_xy_on_grid (expr n, m) = - (xpart flow_xypoints[n], ypart flow_xypoints[m]) -enddef ; - -vardef flow_down_to_grid (expr a,b) = - (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]<ypart flow_xypoints[b] : a else : b fi]) -enddef ; - -vardef flow_up_to_grid (expr a,b) = - (xpart flow_xypoints[a], ypart flow_xypoints[if ypart flow_xypoints[a]>ypart flow_xypoints[b] : a else : b fi]) -enddef ; - -vardef flow_left_to_grid (expr a,b) = - (xpart flow_xypoints[if xpart flow_xypoints[a]<xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a]) -enddef ; - -vardef flow_right_to_grid (expr a,b) = - (xpart flow_xypoints[if xpart flow_xypoints[a]>xpart flow_xypoints[b] : a else : b fi], ypart flow_xypoints[a]) -enddef ; - -vardef flow_valid_connection (expr xfrom, yfrom, xto, yto) = - begingroup ; - save ok, vc, pp ; boolean ok ; pair vc ; path pp ; - save flow_xyfirst, flow_xylast ; pair flow_xyfirst, flow_xylast ; - % check for slanted lines - ok := true ; - for i=1 upto flow_xypoint-1 : - if not ((xpart flow_xypoints[i]=xpart flow_xypoints[i+1]) or (ypart flow_xypoints[i]=ypart flow_xypoints[i+1])) : - ok := false ; - fi ; - endfor ; - if not ok : - % message("slanted"); - false - elseif flow_forcevalid : - % message("force"); - true - elseif (xfrom=xto) and (yfrom=yto) : - % message("self"); - false - else : - % check for crossing shapes - flow_xyfirst := flow_xypoints[1] ; - flow_xylast := flow_xypoints[flow_xypoint] ; - flow_trim_points ; - pp := for i=1 upto flow_xypoint-1 : flow_xypoints[i]-- endfor flow_xypoints[flow_xypoint] ; - flow_xypoints[1] := flow_xyfirst ; - flow_xypoints[flow_xypoint] := flow_xylast ; - for i=1 upto flow_max_x : - for j=1 upto flow_max_y : % was bug: xfrom,yto - if not ( ( (i,j)=(xfrom,yfrom) ) or ( (i,j)=(xto,yto) ) ) : - if not flow_xyfree[i][j] : - vc := pp intersection_point flow_xypath[i][j] ; - if intersection_found : - ok := false - fi ; - fi ; - fi ; - endfor ; - endfor ; - % if not ok: message("crossing") ; fi ; - ok - fi - endgroup -enddef ; - -def flow_connect_top_bottom (expr n) (expr xfrom, yyfrom, zfrom) (expr xto, yyto, zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ; - flow_xypoints[2] := flow_up_on_grid(1) ; - flow_xypoints[5] := flow_down_on_grid(6) ; - flow_xypoints[3] := flow_up_to_grid(2,5) ; - flow_xypoints[4] := flow_up_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(3,5) ; - fi ; - %%%% begin experiment - flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; - flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ; - if flow_dsp_y>0 : - flow_xypoints[2] := flow_xypoints[2] shifted (0,flow_dsp_y) ; - flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; - elseif flow_dsp_y<0 : - flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; - flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; - fi - %%%% end experiment - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_left_right (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ; - flow_xypoints[2] := flow_left_on_grid(1) ; - flow_xypoints[5] := flow_right_on_grid(6) ; - flow_xypoints[3] := flow_left_to_grid(2,5) ; - flow_xypoints[4] := flow_left_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(5,3) ; - fi ; - %%%% begin experiment - if flow_dsp_y <> 0 : - flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; - flow_xypoints[4] := flow_xypoints[4] shifted (0,-flow_dsp_y) ; - fi ; - %%%% end experiment - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_left_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,5) : - flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; - flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ; - flow_xypoints[2] := flow_left_on_grid(1) ; - flow_xypoints[4] := flow_up_on_grid(5) ; - flow_xypoints[3] := flow_left_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_xy_on_grid(2,4) ; - fi ; - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_left_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,5) : - flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; - flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ; - flow_xypoints[2] := flow_left_on_grid(1) ; - flow_xypoints[4] := flow_down_on_grid(5) ; - flow_xypoints[3] := flow_left_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_xy_on_grid(2,4) ; - fi ; - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_right_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,5) : - flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; - flow_xypoints[5] := flow_xy_top(xto,yto,zto,true) ; - flow_xypoints[2] := flow_right_on_grid(1) ; - flow_xypoints[4] := flow_up_on_grid(5) ; - flow_xypoints[3] := flow_right_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_xy_on_grid(2,4) ; - fi ; - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_right_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,5) : - flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; - flow_xypoints[5] := flow_xy_bottom(xto,yto,zto,true) ; - flow_xypoints[2] := flow_right_on_grid(1) ; - flow_xypoints[4] := flow_down_on_grid(5) ; - flow_xypoints[3] := flow_right_to_grid(2,5) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_xy_on_grid(2,4) ; - fi ; - %%%% begin experiment - flow_xypoints[2] := flow_xypoints[2] shifted (flow_dsp_x,0) ; - flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; - if flow_dsp_y>0 : - flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; - flow_xypoints[4] := flow_xypoints[4] shifted (0,-flow_dsp_y) ; - elseif flow_dsp_y<0 : - flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; - flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; - fi - %%%% end experiment - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_left_left (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_left(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_left(xto,yto,zto,true) ; - flow_xypoints[2] := flow_left_on_grid(1) ; - flow_xypoints[5] := flow_left_on_grid(6) ; - flow_xypoints[3] := flow_left_to_grid(2,5) ; - flow_xypoints[4] := flow_left_to_grid(5,2) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(5,3) ; - fi ; - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_right_right (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_right(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_right(xto,yto,zto,true) ; - flow_xypoints[2] := flow_right_on_grid(1) ; - flow_xypoints[5] := flow_right_on_grid(6) ; - flow_xypoints[3] := flow_right_to_grid(2,5) ; - flow_xypoints[4] := flow_right_to_grid(5,2) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_y_on_grid(2,yfrom,yto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(5,3) ; - fi ; - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_top_top (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_top(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_top(xto,yto,zto,true) ; - flow_xypoints[2] := flow_up_on_grid(1) ; - flow_xypoints[5] := flow_up_on_grid(6) ; - flow_xypoints[3] := flow_up_to_grid(2,5) ; - flow_xypoints[4] := flow_up_to_grid(5,2) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(3,5) ; - fi ; - %%%% begin experiment (todo: not value but just + and ) - if flow_dsp_y <> 0 : - flow_xypoints[2] := flow_xypoints[2] shifted (0,flow_dsp_y) ; - flow_xypoints[3] := flow_xypoints[3] shifted (0,flow_dsp_y) ; - flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; - flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; - fi ; - %%%% end experiment - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_bottom_bottom (expr n) (expr xfrom,yyfrom,zfrom) (expr xto,yyto,zto) = - yfrom := flow_y_pos(yyfrom) ; - yto := flow_y_pos(yyto) ; - if flow_points_initialized(xfrom,yfrom,xto,yto,6) : - flow_xypoints[1] := flow_xy_bottom(xfrom,yfrom,zfrom,true) ; - flow_xypoints[6] := flow_xy_bottom(xto,yto,zto,true) ; - flow_xypoints[2] := flow_down_on_grid(1) ; - flow_xypoints[5] := flow_down_on_grid(6) ; - flow_xypoints[3] := flow_down_to_grid(2,5) ; - flow_xypoints[4] := flow_down_to_grid(5,2) ; - if not flow_valid_connection(xfrom,yfrom,xto,yto) : - flow_xypoints[3] := flow_x_on_grid(2,xfrom,xto,zfrom) ; - flow_xypoints[4] := flow_xy_on_grid(3,5) ; - fi ; - %%%% begin experiment - flow_xypoints[3] := flow_xypoints[3] shifted (flow_dsp_x,0) ; - flow_xypoints[4] := flow_xypoints[4] shifted (flow_dsp_x,0) ; - if flow_dsp_y<0 : - flow_xypoints[2] := flow_xypoints[2] shifted (0,-flow_dsp_y) ; - flow_xypoints[3] := flow_xypoints[3] shifted (0,-flow_dsp_y) ; - elseif flow_dsp_y>0 : - flow_xypoints[4] := flow_xypoints[4] shifted (0,flow_dsp_y) ; - flow_xypoints[5] := flow_xypoints[5] shifted (0,flow_dsp_y) ; - fi - %%%% end experiment - flow_draw_connection(n,xfrom,yyfrom,xto,yyto) ; - fi ; -enddef ; - -def flow_connect_bottom_top (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_top_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_connect_right_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_left_right (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_connect_top_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_left_top (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_connect_bottom_left (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_left_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_connect_top_right (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_right_top (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_connect_bottom_right (expr n) (expr xfrom,yfrom,zfrom) (expr xto,yto,zto) = - flow_reverse_connection := true ; - flow_connect_right_bottom (n) (xto,yto,zto) (xfrom,yfrom,zfrom) ; -enddef ; - -def flow_draw_test_shape(expr x, y) = - flow_draw_shape(x,y,fullcircle, .7, .7) ; -enddef ; - -def flow_draw_test_shapes = - for i=1 upto flow_max_x : - for j=1 upto flow_max_y : - flow_draw_test_shape(i,j) ; - endfor ; - endfor ; -enddef; - -def flow_draw_test_area = - pickup pencircle scaled .5flow_shape_line_width ; - draw (unitsquare xscaled flow_max_x yscaled flow_max_y shifted (1,1)) flow_scaled_to_grid withcolor blue ; -enddef ; - -def flow_show_connection(expr n, m) = - - flow_begin_chart(100+n,6,6) ; - - flow_draw_test_area ; - - flow_smooth := true ; - flow_arrowtip := true ; - flow_dashline := true ; - - flow_draw_test_shape(2,2) ; flow_draw_test_shape(4,5) ; - flow_draw_test_shape(3,3) ; flow_draw_test_shape(5,1) ; - flow_draw_test_shape(2,5) ; flow_draw_test_shape(1,3) ; - flow_draw_test_shape(6,2) ; flow_draw_test_shape(4,6) ; - - if (m=1) : - flow_connect_top_bottom (0) (2,2,0) (4,5,0) ; - flow_connect_top_bottom (0) (3,3,0) (5,1,0) ; - flow_connect_top_bottom (0) (2,5,0) (1,3,0) ; - flow_connect_top_bottom (0) (6,2,0) (4,6,0) ; - elseif (m=2) : - flow_connect_top_top (0) (2,2,0) (4,5,0) ; - flow_connect_top_top (0) (3,3,0) (5,1,0) ; - flow_connect_top_top (0) (2,5,0) (1,3,0) ; - flow_connect_top_top (0) (6,2,0) (4,6,0) ; - elseif (m=3) : - flow_connect_bottom_bottom (0) (2,2,0) (4,5,0) ; - flow_connect_bottom_bottom (0) (3,3,0) (5,1,0) ; - flow_connect_bottom_bottom (0) (2,5,0) (1,3,0) ; - flow_connect_bottom_bottom (0) (6,2,0) (4,6,0) ; - elseif (m=4) : - flow_connect_left_right (0) (2,2,0) (4,5,0) ; - flow_connect_left_right (0) (3,3,0) (5,1,0) ; - flow_connect_left_right (0) (2,5,0) (1,3,0) ; - flow_connect_left_right (0) (6,2,0) (4,6,0) ; - elseif (m=5) : - flow_connect_left_left (0) (2,2,0) (4,5,0) ; - flow_connect_left_left (0) (3,3,0) (5,1,0) ; - flow_connect_left_left (0) (2,5,0) (1,3,0) ; - flow_connect_left_left (0) (6,2,0) (4,6,0) ; - elseif (m=6) : - flow_connect_right_right (0) (2,2,0) (4,5,0) ; - flow_connect_right_right (0) (3,3,0) (5,1,0) ; - flow_connect_right_right (0) (2,5,0) (1,3,0) ; - flow_connect_right_right (0) (6,2,0) (4,6,0) ; - elseif (m=7) : - flow_connect_left_top (0) (2,2,0) (4,5,0) ; - flow_connect_left_top (0) (3,3,0) (5,1,0) ; - flow_connect_left_top (0) (2,5,0) (1,3,0) ; - flow_connect_left_top (0) (6,2,0) (4,6,0) ; - elseif (m=8) : - flow_connect_left_bottom (0) (2,2,0) (4,5,0) ; - flow_connect_left_bottom (0) (3,3,0) (5,1,0) ; - flow_connect_left_bottom (0) (2,5,0) (1,3,0) ; - flow_connect_left_bottom (0) (6,2,0) (4,6,0) ; - elseif (m=9) : - flow_connect_right_top (0) (2,2,0) (4,5,0) ; - flow_connect_right_top (0) (3,3,0) (5,1,0) ; - flow_connect_right_top (0) (2,5,0) (1,3,0) ; - flow_connect_right_top (0) (6,2,0) (4,6,0) ; - else : - flow_connect_right_bottom (0) (2,2,0) (4,5,0) ; - flow_connect_right_bottom (0) (3,3,0) (5,1,0) ; - flow_connect_right_bottom (0) (2,5,0) (1,3,0) ; - flow_connect_right_bottom (0) (6,2,0) (4,6,0) ; - fi ; - - flow_end_chart ; - -enddef ; - -def flow_show_connections = - for f=1 upto 10 : - flow_show_connection(f,f) ; - endfor ; -enddef ; - -%D charts - -def flow_clip_chart(expr minx, miny, maxx, maxy) = - flow_cmin_x := minx ; - flow_cmax_x := maxx ; - flow_cmin_y := miny ; - flow_cmax_y := maxy ; -enddef ; - -def flow_begin_chart(expr n, maxx, maxy) = - flow_new_chart ; - flow_chart_figure := n ; - flow_chart_scale := 1 ; - if flow_chart_figure>0: - beginfig(flow_chart_figure) ; - fi ; - flow_initialize_grid (maxx, maxy) ; - bboxmargin := 0 ; - flow_cmin_x := 1 ; - flow_cmax_x := maxx ; - flow_cmin_y := 1 ; - flow_cmax_y := maxy ; -enddef ; - -def flow_end_chart = - begingroup ; - save p ; path p ; - flow_flush_shapes ; - flow_flush_connections ; - flow_flush_pictures ; - flow_cmin_x := flow_cmin_x ; - flow_cmax_x := flow_cmin_x+flow_cmax_x ; - flow_cmin_y := flow_cmin_y-1 ; - flow_cmax_y := flow_cmin_y+flow_cmax_y ; - if flow_reverse_y : - flow_cmin_y := flow_y_pos(flow_cmin_y) ; - flow_cmax_y := flow_y_pos(flow_cmax_y) ; - fi ; - p := (((flow_cmin_x,flow_cmin_y)--(flow_cmax_x,flow_cmin_y)-- - (flow_cmax_x,flow_cmax_y)--(flow_cmin_x,flow_cmax_y)--cycle)) - flow_scaled_to_grid ; - %draw p withcolor red ; - p := p enlarged flow_chart_offset ; - clip currentpicture to p ; - setbounds currentpicture to p ; - endgroup ; - currentpicture := currentpicture scaled flow_chart_scale ; - if flow_chart_figure>0: - endfig ; - fi ; -enddef ; - -def flow_new_shape(expr x, y, n) = - if known n : - if (x>0) and (x<=flow_max_x) and (y>0) and (y<=flow_max_y) : - flow_draw_shape(x,y,some_shape_path(n), flow_shape_width/flow_grid_width, flow_shape_height/flow_grid_height) ; - else : - message ("shape outside grid ignored") ; - fi ; - else : - message ("shape not known" ) ; - fi ; -enddef ; - -def flow_begin_sub_chart = - begingroup ; - save flow_shape_line_width, flow_connection_line_width ; - save flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ; - color flow_shape_line_color, flow_shape_fill_color, flow_connection_line_color ; - save flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ; - boolean flow_smooth, flow_arrowtip, flow_dashline, flow_peepshape ; -enddef ; - -def flow_end_sub_chart = - endgroup ; -enddef ; - |