diff options
Diffstat (limited to 'Master/texmf-dist/doc/latex/luasseq/luasseq.lua')
-rw-r--r-- | Master/texmf-dist/doc/latex/luasseq/luasseq.lua | 830 |
1 files changed, 0 insertions, 830 deletions
diff --git a/Master/texmf-dist/doc/latex/luasseq/luasseq.lua b/Master/texmf-dist/doc/latex/luasseq/luasseq.lua deleted file mode 100644 index 80704fb5d5e..00000000000 --- a/Master/texmf-dist/doc/latex/luasseq/luasseq.lua +++ /dev/null @@ -1,830 +0,0 @@ --- to do: clean up dtx file of remnants of classical sseq code --- to do: documentation - -function sseq_init() --- sseqobject is a 2D-array containing arrays of all the nodes that are dropped at (x,y) --- Thus the first object dropped at (2,3) is sseqobject[2][3][1]. --- The object itself is a dictionary, containing: --- name a given name --- code the TeX code (in math mode) to typeset --- extends if it's an extension, then what it extends --- color the color --- nodetype the pgf node type (circle etc) --- cmd pgf code for drawing it -- with one %s for the color --- posx,posy the absolute position on the picture (in sp) -- determined at the end - sseqobject = {} --- sseqname is a dictionary containing all the given names of dropped objects --- Its value is a dictionary, containing --- x, y, n the triple index in the sseqobject array - sseqname = {} --- sseqlabel is an array of labels of sseqobjects --- Its values are dictionaries, containing --- x,y,n the triple the label belongs to --- pos one of L,LU,U,RU,R,RD,D,LD --- code the TeX code (in math mode) to typeset --- color the color - sseqlabel = {} --- sseqconnection is an array containing all connection (lines) --- the connection itself is a dictionary, containing: --- from an array (x,y,n) if n=0 then source void --- to an array (x,y,n) if n=0 then target void --- color the color --- curving a number denoting the curving factor --- dashing the pgf dashing code --- arrowfrom the arrowstyle at from (or nil) --- arrowto the arrowstyle at to (or nil) - sseqconnection = {} --- --- Initialize some global variables --- - sseqcurrentindex = nil - sseqpreviousindex = nil - sseqopenconnection = nil - - sseqxstart = 0 -- minimal x - sseqystart = 0 -- minimal y - - sseqgriddrawer = sseq_grid_crossword - sseqgridstrokethickness = 6554 -- 0.1pt in sp - - sseqxlabels = sseq_parse_label_list("&n") - sseqylabels = sseq_parse_label_list("&n") - - sseqprefix = {} - sseqposx, sseqposy = 0,0 - sseqcurrabsx, sseqcurrabsy = 0,0 - sseq_set_defaults() -end - -function sseq_set_defaults() - sseqentrysize = 745860 -- 0.4 cm in scaled points - sseqxgap = 559409 -- 0.3 cm in scaled points - sseqygap = 559409 - sseqxstep = 2 -- every other label is drawn - sseqystep = 2 - sseqdefaultarrowstyle = "to" - ssequsescolor = true - sseqpacking = sseq_pack_auto -end - - --- parselabelrange: input = a string of the form a...b,c...d, etc. --- defstart: the default start index --- return = an array of dictionaries --- min a number --- max a number -function parselabelrange(s,defstart) - local res = {} - local mini,maxi,found - for rng in string.gfind(s.."," , "([^,]+)") do - found,_,mini,maxi = string.find(rng,"([+-]?[0-9]+)%.%.%.([+-]?[0-9]+)") - if not found then - mini = defstart - maxi = tonumber(rng) - if not maxi then error("invalid range : "..rng) end - maxi = maxi+defstart-1 - else - mini = tonumber(mini) - maxi = tonumber(maxi) - end - table.insert(res,{min = mini, max = maxi}) - end - return res -end - -function sseq_setup_ranges(xr,yr,defxstart,defystart) - sseqxrange = parselabelrange(xr,defxstart) - sseqyrange = parselabelrange(yr,defystart) -end - -function sseq_get_rangepart(range,x,gap) - local pos = 0 - for j,rng in ipairs(range) do - if x >= rng.min and x <= rng.max then - return pos,pos+(rng.max+1-rng.min)*sseqentrysize - else - pos = pos+(rng.max+1-rng.min)*sseqentrysize+gap - end - end -end - -function sseq_getabsoluteposition(range,x,gap) - local pos = 0 - for j,rng in ipairs(range) do - if x >= rng.min and x <= rng.max then - return pos+sseqentrysize*(x-rng.min),false - end - pos = pos+(rng.max+1-rng.min)*sseqentrysize+gap - end -end - -function sseq_getcoords(x,y) - local xpos,xout,ypos,yout - xpos = sseq_getabsoluteposition(sseqxrange,x,sseqxgap) - ypos = sseq_getabsoluteposition(sseqyrange,y,sseqygap) - return xpos, ypos -end - -function sseq_grid_none() -end - -function sseq_grid_crossword(x,y,width,height) - tex.print("\\pgfsetlinewidth{"..sseqgridstrokethickness.."sp}") - tex.print("\\pgfpathgrid[stepx="..sseqentrysize.."sp,stepy="..sseqentrysize.."sp]{\\pgfpointorigin}{\\pgfpoint{"..width*sseqentrysize.."sp}{"..height*sseqentrysize.."sp}}") - tex.print("\\pgfusepath{stroke}") -end - -function sseq_grid_go(x,y,width,heigh) - tex.print("\\pgfsetlinewidth{"..sseqgridstrokethickness.."sp}") - tex.print("\\pgftransformxshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgftransformyshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgfpathgrid[stepx="..sseqentrysize.."sp,stepy="..sseqentrysize.."sp]{\\pgfpoint{"..(-sseqentrysize/2).."sp}{"..(-sseqentrysize/2).."sp}}{\\pgfpoint{"..(width*sseqentrysize-sseqentrysize/2).."sp}{"..(height*sseqentrysize-sseqentrysize/2).."sp}}") - tex.print("\\pgfusepath{stroke}") -end - -function sseq_grid_dots(x,y,width,height) - tex.print("\\pgfsetlinewidth{1pt}") - tex.print("\\pgfsetdash{{1pt}{"..(sseqentrysize-65536).."sp}}{"..(sseqentrysize/2+32768).."sp}") - tex.print("\\pgftransformxshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgftransformyshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgfpathgrid[stepx="..sseqentrysize.."sp,stepy="..sseqentrysize.."sp]{\\pgfpoint{"..(-sseqentrysize/2).."sp}{"..(-sseqentrysize/2).."sp}}{\\pgfpoint{"..(width*sseqentrysize-sseqentrysize/2).."sp}{"..(height*sseqentrysize-sseqentrysize/2).."sp}}") - tex.print("\\pgfusepath{stroke}") -end - -function sseq_grid_chess(x,y,width,height) - tex.print("\\pgfsetcolor{sslightgr}") - if math.mod(x+y, 2) == 1 then -- invert everything by first drawing a solid gray rectangle - -- and then draw the grid in white. This way, even bidegree - -- is always white. - tex.print("\\pgfpathrectangle{\\pgfpoint{0sp}{0sp}}{\\pgfpoint{" - ..(width*sseqentrysize).."sp}{"..(height*sseqentrysize).."sp}}") - tex.print("\\pgfusepath{fill}") - tex.print("\\pgfsetcolor{white}") - end - - tex.print("\\pgfsetlinewidth{"..sseqentrysize.."sp}") - - tex.print("\\pgfsetdash{{"..sseqentrysize.."sp}{"..sseqentrysize.."sp}}{"..sseqentrysize.."sp}") - - - tex.print("\\pgftransformxshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgftransformyshift{"..(sseqentrysize/2).."sp}") - tex.print("\\pgfpathgrid[stepx="..(sseqentrysize*2).."sp,stepy="..(sseqentrysize*2).."sp]{\\pgfpoint{"..(-sseqentrysize/2).."sp}{"..(-sseqentrysize/2).."sp}}{\\pgfpoint{"..(width*sseqentrysize-sseqentrysize/2).."sp}{"..(height*sseqentrysize-sseqentrysize/2).."sp}}") - tex.print("\\pgfusepath{stroke}") -end - -function sseq_drawgrid() -- draws the background grid. This seems like pgf patterns are made - -- for this purpose, but you can't specify a phase for patterns, - -- so they are useless except for ornamental purposes. - local xmin,ymin,width,heigt - for x,xrng in ipairs(sseqxrange) do - for y,yrng in ipairs(sseqyrange) do - xmin, ymin = sseq_getcoords(xrng.min,yrng.min) - tex.print("\\begin{pgfscope}") - tex.print("\\pgftransformshift{\\pgfpoint{"..xmin.."sp}{"..ymin.."sp}}") - width = (xrng.max+1)-xrng.min - height = (yrng.max+1)-yrng.min - sseqgriddrawer(xrng.min,yrng.min,width,height) - tex.print("\\end{pgfscope}") - end - end -end - --- A label list has the form x1;x2;...;xn,y1;y2;...;yn,... where x1 etc are labels --- A label may contain the placeholders: --- &n = actual coordinate --- &c = number of chunk (begin with 0) --- &i = index within the chunk (begin with 0) - -function sseq_parse_label_list(s) - local res = {} - local chunk = 0 - local index - - for rng in string.gfind(s.."," , "([^,]*),") do - res[chunk] = {} - index = 0 - for label in string.gfind(rng..";", "([^;]*);") do - res[chunk][index] = label - index = index+1 - end - chunk = chunk+1 - end - return res -end - -function sseq_format_label(label, n,c,i) - local res - res = string.gsub(label,"&n",n) - res = string.gsub(res,"&c",c) - res = string.gsub(res,"&i",i) - res = string.gsub(res,"&&","&") - return res -end - -function sseq_label_fromlist(n,c,i,list) --- will return list[c][i] unless this is out of range, then take the last one given - local chunks = #list - local chunklen - local chunk - if list[0] then chunks = chunks+1 else return "" end - chunk = list[math.min(chunks-1,c)] - chunklen = #chunk - if chunk[0] then chunklen = chunklen+1 end - return sseq_format_label(chunk[math.min(chunklen-1,i)],n,c,i) -end - - -function sseq_draw_horizontal_labels(range) - local k - - if sseqxtep == 0 then return end -- old-fashioned way of disabling labels - for c,rng in ipairs(range) do - k=0 - for i=rng.min,rng.max,sseqxstep do - x = sseq_getcoords(i,0) - label = sseq_label_fromlist(i,c-1,k,sseqxlabels) - -- bug fix with bounding box sizes in pgf --- tex.print("\\sbox\\sseq@labelbox{\\strut\\ensuremath{"..label.."}}") --- tex.print("\\dimen0=\\ht\\sseq@labelbox") --- tex.print("\\advance\\dimen0 by \\dp\\sseq@labelbox") --- tex.print("\\pgf@protocolsizes{0pt}{-\\dimen0}") - tex.print("\\pgftext[top,at=\\pgfpoint{"..(x+sseqentrysize/2).."sp}{0sp}]{\\ensuremath{\\strut "..label.."}}") - k=k+sseqxstep - end - end -end - -function sseq_draw_vertical_labels(range) - local k - - if sseqystep == 0 then return end -- old-fashioned way of disabling labels - for c,rng in ipairs(range) do - k=0 - for i=rng.min,rng.max,sseqystep do - _,y = sseq_getcoords(0,i) - label = sseq_label_fromlist(i,c,k,sseqylabels) - tex.print("\\pgftext[right,at=\\pgfpoint{-2pt}{"..(y+sseqentrysize/2).."sp}]{\\ensuremath{"..label.."}}") - k=k+sseqystep - end - end -end - - -function sseq_drawlabels() - sseq_draw_horizontal_labels(sseqxrange) - sseq_draw_vertical_labels(sseqyrange) -end - -function sseq_getdroplist(x,y) - return sseqobject[x] and sseqobject[x][y] -end - -function sseq_openposition() - local l = sseq_getdroplist(sseqposx,sseqposy) - if not l then - error(string.format("sseq: cannot open position (%d,%d): nothing dropped yet",sseqposx,sseqposy)) - elseif #l ~= 1 then - error(string.format("sseq: cannot open position (%d,%d): multiple drops",sseqposx,sseqposy)) - else - sseqcurrentindex = {sseqposx,sseqposy,1} - end -end - -function sseq_assert_source() - sseq_flush_connection() - if not sseqcurrentindex then - sseq_openposition() - end -end - -function sseq_finish_pos() - sseq_flush_connection() - if sseqcurrentindex then - sseq_conclude_connection() - sseqpreviousindex, sseqcurrentindex = sseqcurrentindex,nil - end -end - -function sseq_drop_and_open(x,y) - if not sseqobject[x] then sseqobject[x] = {} end - if not sseqobject[x][y] then sseqobject[x][y] = {} end - table.insert(sseqobject[x][y],{}) - sseqcurrentindex = {x,y,#sseqobject[x][y]} -end - -function sseq_drop_object(x,y,shape,pathusage,content,col) - local obj - sseq_finish_pos() - sseq_drop_and_open(x,y) - obj = sseqobject[x][y][sseqcurrentindex[3]] - obj.code = content - obj.color = col - obj.nodetype = shape - - sseq_conclude_connection() - -- now do the optimizations such as \bullet -> drawn black circle etc - if (pathusage == "fill") or (obj.code == "\\bullet ") then - if (obj.nodetype == "circle") or (obj.code == "\\bullet ") then - obj.nodetype = "circle" - obj.cmd = "\\pgfsetfillcolor{%s}\\pgfpathqcircle{2pt}\\pgfusepathqfill" - obj.radius = 131072 -- 2pt in sp - obj.wd,obj.ht = 262144,262144 -- 4pt in sp - else - obj.cmd = "\\pgfsetfillcolor{%s}\\pgfsys@rect{-2pt}{-2pt}{4pt}{4pt}\\pgfsys@fill" - obj.wd,obj.ht = 262144,262144 - obj.radius = 370727 - end - elseif(obj.code == "\\square ") then - obj.nodetype="rectangle" - obj.cmd = "\\pgfsetstrokecolor{%s}\\pgfsys@rect{-2pt}{-2pt}{4pt}{4pt}\\pgfsys@stroke" - obj.wd,obj.ht = 262144,262144 - obj.radius = 370727 - else - obj.cmd = "\\pgfsetstrokecolor{%s}\\pgfsetfillcolor{white}"..string.format("\\pgfnode{%s}{center}{\\color{%%s}\\ensuremath{%s}}{}{\\pgfusepath{fill,%s}}",obj.nodetype,obj.code,pathusage) - tex.print (string.format("\\setbox%d=\\hbox{\\pgfinterruptpicture\\ensuremath{%s}\\endpgfinterruptpicture}",sseqboxno,obj.code)) - tex.print("\\directlua0{sseq_register_size()}") - end -end - -function sseq_drop_extension(shape,pathusage,col) - local obj,refobj - sseq_assert_source() - table.insert(sseqobject[sseqposx][sseqposy],{}) - obj = sseqobject[sseqposx][sseqposy][#sseqobject[sseqposx][sseqposy]] - obj.code = "" -- no TeX code to typeset - obj.extends = sseqcurrentindex[3] - obj.color = col - obj.nodetype = shape - refobj = sseqobject[sseqcurrentindex[1]][sseqcurrentindex[2]][sseqcurrentindex[3]] - - sseqcurrentindex[3] = #sseqobject[sseqposx][sseqposy] - sseq_conclude_connection() - - if (shape=="circle") then - obj.radius = refobj.radius+65536 -- add 1pt in sp - obj.wd,obj.ht = 2*obj.radius,2*obj.radius - obj.cmd = "\\pgfsetstrokecolor{%s}\\pgfpathqcircle{"..obj.radius.."sp}\\pgfusepath{stroke,"..pathusage.."}" - else - obj.wd,obj.ht = refobj.wd+131072,refobj.ht +131072 -- add 1 pt at each side - obj.radius = 0.5*math.sqrt(obj.wd*obj.wd+obj.ht*obj.ht) - obj.cmd = "\\pgfsetstrokecolor{%s}\\pgfsetshapeinnerxsep{"..(.5*obj.wd).."sp}\\pgfsetshapeinnerysep{"..(.5*obj.ht).."sp}\\pgfnode{rectangle}{center}{}{}{\\pgfusepath{stroke,"..pathusage.."}}" - end -end - -function sseq_register_size() - local currobj = sseqobject[sseqcurrentindex[1]][sseqcurrentindex[2]][sseqcurrentindex[3]] - currobj.wd = tex.wd[sseqboxno] - currobj.ht = (tex.ht[sseqboxno]+tex.dp[sseqboxno]) - currobj.dp = tex.dp[sseqboxno] - currobj.radius = 0.5*math.sqrt(currobj.wd*currobj.wd+currobj.ht*currobj.ht) -end - -function sseq_drop_object_here(shape,pathusage,content,col) - sseq_drop_object(sseqposx,sseqposy,shape,pathusage,content,col) -end - -function sseq_bullstring(x,y,n,col) - if n==0 then return end - sseq_drop_object_here("circle","fill","\\bullet",col) - for i=2,n do - sseq_move(x,y) - sseq_drop_object_here("circle","fill","\\bullet",col) - sseq_late_connection("","",col,false,false) - end -end - -function sseq_moveto(x,y) - sseq_conclude_connection() - sseq_finish_pos() - sseqposx = x - sseqposy = y -end - -function sseq_grayout(col) - sseq_assert_source() - sseqobject[sseqcurrentindex[1]][sseqcurrentindex[2]][sseqcurrentindex[3]].color = col - for _,conn in pairs(sseqconnection) do - if (conn.from[1] == sseqcurrentindex[1] and conn.from[2] == sseqcurrentindex[2] and conn.from[3] == sseqcurrentindex[3]) or (conn.to[1] == sseqcurrentindex[1] and conn.to[2] == sseqcurrentindex[2] and conn.to[3] == sseqcurrentindex[3]) then - conn.color = col - end - end -end - -function sseq_move(x,y) - sseq_moveto(sseqposx+x,sseqposy+y) -end - -function stringtolist(pref,name) - local res = {} - for i,p in ipairs(pref) do table.insert(res,p) end - for w in string.gfind(name,"%w+") do - table.insert(res,w) - end - table.sort(res) - return res -end - -function sseq_set_global_name(name) - local namestring = table.concat(name) - sseq_assert_source() - if sseqname[namestring] then - error("sseq: duplicate name "..namestring) - else - sseqname[namestring] = {sseqcurrentindex[1],sseqcurrentindex[2],sseqcurrentindex[3]} - end -end - -function sseq_global_name(name) - return stringtolist(sseqprefix,name) -end - -function sseq_name(name) - sseq_set_global_name(sseq_global_name(name)) -end - -function sseq_global_goto(name) - local namestring = table.concat(name) - sseq_conclude_connection() - sseq_finish_pos() - if not sseqname[namestring] then - error("sseq: goto name does not exist: "..namestring) - else - sseqcurrentindex = { sseqname[namestring][1],sseqname[namestring][2],sseqname[namestring][3] } - sseqposx,sseqposy = sseqname[namestring][1], sseqname[namestring][2] - end -end - -function sseq_abs_goto(name) - sseq_global_goto(stringtolist({},name)) -end - -function sseq_prefix(pref) - sseqprefix = stringtolist(sseqprefix,pref) -end - -function sseq_reset_prefix() - sseqprefix = {} -end - -function sseq_goto(name) - sseq_global_goto(sseq_global_name(name)) -end - -function sseq_flush_connection() -end - -function sseq_conclude_connection() - if not sseqopenconnection then return end - if not sseqcurrentindex then - sseq_openposition() - end - sseqopenconnection.to = { sseqcurrentindex[1],sseqcurrentindex[2],sseqcurrentindex[3] } - table.insert(sseqconnection,sseqopenconnection) - sseqopenconnection = nil -end - --- immediately register a connection between sseqpreviousindex and sseqcurrentindex -function sseq_late_connection(dash,bending,col,sourcevoid,targetvoid) - local newconn - - sseq_flush_connection() -- finish previous connection - if not targetvoid then sseq_assert_source() end - if (not sseqpreviousindex) or (not targetvoid and (sseqpreviousindex[3] == 0)) then - error("sseq: connection without well-defined source") - end - newconn = { color = col, dashing = dash } - if(bending ~= "") then newconn.curving = bending end - if sourcevoid then - newconn.from = {sseqpreviousindex[1],sseqpreviousindex[2],0} - else - newconn.from = {sseqpreviousindex[1],sseqpreviousindex[2],sseqpreviousindex[3]} - end - if targetvoid then - newconn.to = {sseqposx,sseqposy,0} - else - newconn.to = {sseqcurrentindex[1],sseqcurrentindex[2],sseqcurrentindex[3]} - end - table.insert(sseqconnection,newconn) -end - -function sseq_void_line(dash,bending,col,x,y) - local newconn = { color = col, dashing = dash } - - if(bending ~= "") then newconn.curving = bending end - sseq_assert_source(); - newconn.from = {sseqcurrentindex[1],sseqcurrentindex[2],sseqcurrentindex[3]} - newconn.to = {sseqcurrentindex[1]+x,sseqcurrentindex[2]+y,0} - table.insert(sseqconnection,newconn) -end - -function sseq_open_connection(dash,bending,col,x,y) - local newconn = { color = col, dashing = dash } - - if(bending ~= "") then newconn.curving = bending end - sseq_assert_source(); sseq_finish_pos() - newconn.from = {sseqpreviousindex[1],sseqpreviousindex[2],sseqpreviousindex[3]} - sseqopenconnection = newconn -end - -function sseq_add_arrow(fromto,type) - if sseqopenconnection then - sseqopenconnection[fromto] = type - else - sseqconnection[#sseqconnection][fromto] = type - end -end - -function sseq_drop_label(p,col,label) - sseq_assert_source() - table.insert(sseqlabel,{x = sseqcurrentindex[1], y = sseqcurrentindex[2], n = sseqcurrentindex[3], - color = col, code = label, pos = p}) -end - - -function sseq_pack_diagonal(i,n) - return sseqentrysize/2+sseqentrysize*(n-i)/4, - sseqentrysize/2-sseqentrysize*(n-i)/4 -end - -function sseq_pack_horizontal(i,n) - return sseqentrysize/2+sseqentrysize*(i-1)/4, - sseqentrysize/2 -end -function sseq_pack_vertical(i,n) - return sseqentrysize/2, - sseqentrysize/2-sseqentrysize*(n-i)/4 -end - -sseqautopackdata = { {{.5,.5}}, -- one - {{.25,.75},{.75,.25}}, -- two - {{.167,.833},{.5,.5},{.833,.167}}, -- three - {{.167,.75},{.389,.25},{.611,.75},{.833,.25}} -- four - } - -function sseq_pack_auto(i,n) -- return offset of the ith square out of n. - if n > 4 then return sseq_pack_diagonal(i,n) end - dat = sseqautopackdata[n][i] - return dat[1]*sseqentrysize,dat[2]*sseqentrysize - -end - -function sseq_position_object_list(x,y,list) - local absx,absy = sseq_getcoords(x,y) -- the lower left corner of the square - local numobj = #list - local j = 1 - - if not absx or not absy then return end -- outside clipping area -- don't draw. - - for i,obj in ipairs(list) do - if (obj.extends) then numobj = numobj-1 end - end - - for i,obj in ipairs(list) do - if (obj.extends) then - obj.posx,obj.posy = list[obj.extends].posx,list[obj.extends].posy - else - obj.posx, obj.posy = sseqpacking(j,numobj) - obj.posx = obj.posx + absx - obj.posy = obj.posy + absy - j = j+1 - end - if not obj.color then obj.color = "black" end - end -end - -function sseq_position_objects() - for x,ylist in pairs(sseqobject) do - for y,olist in pairs(ylist) do - sseq_position_object_list(x,y,olist) - end - end -end - -function sseq_dump_translation(x,y) - tex.print("\\pgfsys@transformshift{"..(x-sseqcurrabsx).."sp}{"..(y-sseqcurrabsy).."sp}") - sseqcurrabsx,sseqcurrabsy = x,y -end - -function sseq_dump_object(x,y,obj) - if not obj.posx or not obj.posy then return end - sseq_dump_translation(obj.posx,obj.posy) - tex.print(string.format(obj.cmd,obj.color,obj.color)) -end - --- --- return the intersection of the vector to (fromx, fromy) with the boundary of obj --- -function sseq_correct_line_end(obj,fromx,fromy,curving) - local distsq,posx,posy,deltax,deltay,dirx,diry - posx,posy = obj.posx,obj.posy - - dirx = posx-fromx - diry = posy-fromy - - if(curving) then - dirx,diry = dirx/2-curving*diry,diry/2+curving*dirx - end - - if obj.nodetype == "circle" then - dist = math.sqrt(dirx*dirx + diry*diry) - return posx - obj.radius*(dirx)/dist, - posy - obj.radius*(diry)/dist - else - deltax = dirx/diry*obj.ht/2 -- no problem with infinity in LUA - deltay = diry/dirx*obj.wd/2 - if(math.abs(deltax) <= obj.wd/2) then -- boundary point on one of the horizontal lines - if fromy > posy then - return posx + deltax, posy + obj.ht/2 - else - return posx - deltax, posy - obj.ht/2 - end - else - if fromx > posx then - return posx + obj.wd/2, posy + deltay - else - return posx - obj.wd/2, posy - deltay - end - end - end -end - --- --- return the intersection of the vector from (x,y) to the clipped object at --- coordinate (clipi,clipj) with the boundary of the grid segment containing (i,j) --- -function sseq_fix_clipped_connection(clipi,clipj,i,j,x,y) - local minx,maxx,miny,maxy,deltax,deltay - - minx,maxx = sseq_get_rangepart(sseqxrange,i,sseqxgap) - miny,maxy = sseq_get_rangepart(sseqyrange,j,sseqygap) - minx = minx - sseqxleak - maxx = maxx + sseqxleak - miny = miny - sseqyleak - maxy = maxy + sseqyleak - - deltax = 1e10*(clipi-i) - deltay = 1e10*(clipj-j) - -- compute intersection of the vector (deltax, deltay) based at (x,y) - -- with the rectangle minx,miny,maxx,maxy - if(x+deltax > maxx) then deltax,deltay = maxx-x, deltay * (maxx-x)/deltax end - if(x+deltax < minx) then deltax,deltay = minx-x, deltay*(minx-x)/deltax end - if(y+deltay > maxy) then deltax,deltay = deltax * (maxy-y)/deltay, maxy-y end - if(y+deltay < miny) then deltax,deltay = deltax * (miny-y)/deltay, miny-y end - return x+deltax,y+deltay -end - -function sseq_dump_connection(conn) - local fromx, fromy, tox, toy, ctrlx,ctrly, helpx, helpy - local fromobj,toobj - - -- possibilities: * from, to not in the displayed range - -- * from[3] = 0 or to[3] = 0 (void line) - -- or any combination. - - -- if source or target is clipped, will make it a void line - -- - fromx,fromy = sseq_getcoords(conn.from[1],conn.from[2]) - tox,toy = sseq_getcoords(conn.to[1],conn.to[2]) - - if ((not fromx) or (not fromy) or (conn.from[3] == 0)) - and ((not tox) or (not toy) or (conn.to[3] == 0)) then - -- forget it -- source and target are clipped and/or void - return - end - - if ((not fromx) or (not fromy)) then -- source clipped: we can be sure the target is regular - fromx,fromy = sseq_fix_clipped_connection(conn.from[1],conn.from[2],conn.to[1],conn.to[2],tox,toy) - toobj = sseqobject[conn.to[1]][conn.to[2]][conn.to[3]] - tox,toy = toobj.posx, toobj.posy - elseif ((not tox) or (not toy)) then -- target clipped: we can be sure the source is regular - tox,toy = sseq_fix_clipped_connection(conn.to[1],conn.to[2],conn.from[1],conn.from[2],fromx,fromy) - fromobj = sseqobject[conn.from[1]][conn.from[2]][conn.from[3]] - fromx,fromy = fromobj.posx, fromobj.posy - elseif conn.from[3] == 0 then -- source not clipped but void - toobj = sseqobject[conn.to[1]][conn.to[2]][conn.to[3]] - fromx = fromx+(toobj.posx-tox) - fromy = fromy+(toobj.posy-toy) - tox,toy = toobj.posx, toobj.posy - elseif conn.to[3] == 0 then -- target not clipped but void - fromobj = sseqobject[conn.from[1]][conn.from[2]][conn.from[3]] - tox = tox+(fromobj.posx-fromx) - toy = toy+(fromobj.posy-fromy) - fromx,fromy = fromobj.posx, fromobj.posy - else -- both source and target regular - fromobj = sseqobject[conn.from[1]][conn.from[2]][conn.from[3]] - fromx,fromy = fromobj.posx, fromobj.posy - toobj = sseqobject[conn.to[1]][conn.to[2]][conn.to[3]] - tox,toy = toobj.posx, toobj.posy - end - - - if fromobj then -- we have to be more careful where it ends - fromx,fromy = sseq_correct_line_end(fromobj,tox,toy,conn.curving) - end - if toobj then - tox,toy = sseq_correct_line_end(toobj,fromx,fromy,conn.curving and -conn.curving) - end - - if conn.curving then - ctrlx = tox/2+fromx/2-conn.curving*(toy-fromy) - ctrly = toy/2+fromy/2+conn.curving*(tox-fromx) - end - - if conn.arrowfrom or conn.arrowto or conn.curving then -- got to use slow code - tex.print("\\pgfsetdash{"..conn.dashing.."}{0pt}") - tex.print("\\pgfsetstrokecolor{"..conn.color.."}") - if (fromx and fromy) then - if (tox and toy) then - tex.print(string.format("\\pgfpathmoveto{\\pgfpoint{%dsp}{%dsp}}",fromx,fromy)) - if conn.curving then - tex.print(string.format("\\pgfpathquadraticcurveto{\\pgfpoint{%dsp}{%dsp}}{\\pgfpoint{%dsp}{%dsp}}",ctrlx,ctrly,tox,toy)) - else - tex.print(string.format("\\pgfpathlineto{\\pgfpoint{%dsp}{%dsp}}",tox,toy)) - end - if conn.arrowfrom then tex.print("\\pgfsetarrowsstart{"..conn.arrowfrom.."}")end - if conn.arrowto then tex.print("\\pgfsetarrowsend{"..conn.arrowto.."}") end - tex.print("\\pgfusepath{stroke}") - end - end - else - tex.print("\\pgfsetdash{"..conn.dashing.."}{0pt}") - tex.print("\\pgfsetstrokecolor{"..conn.color.."}") - if (fromx and fromy) then - if (tox and toy) then - tex.print(string.format("\\pgfsys@moveto{%dsp}{%dsp}",fromx,fromy)) - tex.print(string.format("\\pgfsys@lineto{%dsp}{%dsp}",tox,toy)) - tex.print("\\pgfsys@stroke") - end - end - end -end - -local labelpositioninrect = { U = {0,.5,"bottom"}, - UL = {-.5,.5,"bottom,right"}, - LU = {-.5,.5,"bottom,right"}, - L = {-.5,0,"right"}, - DL = {-.5,-.5,"top,right"}, - LD = {-.5,-.5,"top,right"}, - D = {0,-.5,"top"}, - DR = {.5,-.5,"top,left"}, - RD = {.5,-.5,"top,left"}, - R = {.5,0,"left"}, - UR = {.5,.5,"bottom,left"}, - RU = {.5,.5,"bottom,left"} } -local labelpositionincirc = { U = {0,1,"bottom"}, - UL = {-.71,.71,"bottom,right"}, - LU = {-.71,.71,"bottom,right"}, - L = {-1,0,"right"}, - DL = {-.71,-.71,"top,right"}, - LD = {-.71,-.71,"top,right"}, - D = {0,-1,"top"}, - DR = {.71,-.71,"top,left"}, - RD = {.71,-.71,"top,left"}, - R = {1,0,"left"}, - UR = {.71,.71,"bottom,left"}, - RU = {.71,.71,"bottom,left"} } - -function sseq_dump_label(label) - local labelledobj = sseqobject[label.x][label.y][label.n] - local posx,posy - tex.print("\\color{"..label.color.."}") - if labelledobj.nodetype == "circle" then - posx = labelledobj.posx+labelpositionincirc[label.pos][1]*labelledobj.radius - posy = labelledobj.posy+labelpositionincirc[label.pos][2]*labelledobj.radius - sseq_dump_translation(posx,posy) - tex.print(string.format("\\pgftext[%s]{\\ensuremath{%s}}",labelpositioninrect[label.pos][3],label.code)) - else - posx = labelledobj.posx+labelpositioninrect[label.pos][1]*labelledobj.wd - posy = labelledobj.posy+labelpositioninrect[label.pos][2]*labelledobj.ht - sseq_dump_translation(posx,posy) - tex.print(string.format("\\pgftext[%s]{\\ensuremath{%s}}",labelpositioninrect[label.pos][3],label.code)) - end -end - --- Write out all the pgf code to produce the chart -function sseq_dump_code() - if (not sseqxleak) then sseqxleak = 0.3*sseqxgap end - if (not sseqyleak) then sseqyleak = 0.3*sseqygap end - tex.print("\\makeatletter") - tex.print("\\pgfset{inner sep=0pt}") - -- connections - for _,conn in pairs(sseqconnection) do - sseq_dump_connection(conn) - end - -- objects - tex.print("\\color{white}") -- background fill color - for x,ylist in pairs(sseqobject) do - for y,olist in pairs(ylist) do - for z,obj in ipairs(olist) do - sseq_dump_object(x,y,obj) - end - end - end - -- labels - for _,label in pairs(sseqlabel) do - sseq_dump_label(label) - end - tex.print("\\makeatother") -end - |