//
// REDDRAW program
//
// consists of redraw.bcpl, init.bcpl, drawfile.bcpl, redraw.d, zpArrows;
// uses vec.d vec.bcpl dspline1.bcpl
//
//
// load using
// BLDR/l/v redraw init drawfile vec GP DSPLINE1 UtilStr ReadUserCmItem
// Template Float
// TimeConvA TimeConvB TimeIO zpArrows
//
// Copyright 1980,1982 Bruce D. Lucas
//
get "Redraw.d"
get "Streams.d"
get "vec.d"
static [
OptFlag = true // whether to optimize orthogonal lines
VerboseFlag = false // verbose
QuietFlag = false // quiet
ColorFlag = false // whether to make colored (non-black) lines 3/4 size
ScribeFlag = false // whether to put <==<< marker in picture
MergeFlag = false // whether to merge draw files
MAXKNOTS = 100 // maximum knots per spline
UNITTabSize = -152 // allow 152 * sizeof UNIT words for the stack
FONTTabSize = 50 // vec package font table size - don't confuse w/ draw fonts
MinDelta = 1 // minimum delta
MaxDelta = 16 // maximum delta
DashOn = 80 // Dover scan lines in on (black) part of dashed spline
DashOff = 48 // Dover scan lines in off (white) part
UserX = 0 // x offset specified by user switch
UserY = 0 // y offset specified by user switch
p0x; p0y // global buffers for x, y points and derivatives
p1x; p1y
p2x; p2y
p3x; p3y
NoTablesYet = true // whether we've allocated the knot tables yet
BrushTable // table structured as FONTS for draw brushes
TextTable // table structures as FONTS for draw text
]
let Main() be [
PutTemplate(dsp,"ReDDraw Version 2.2*c")
UserCmGet()
InitFloat()
let ResultVec = vec 50
let SwitchVec = vec 20
let PressFileName = vec 50
let DrawFileName = vec 50
let FontFileName = vec 50
let arg = vec 50
SetupReadParam(0,SwitchVec,0,0)
// get the flag switches
for i=1 to SwitchVec!0 do [
switchon SwitchVec!i into [
case $o: case $O: OptFlag = not OptFlag; endcase
case $v: case $V: VerboseFlag = not VerboseFlag; endcase
case $c: case $C: ColorFlag = not ColorFlag; endcase
case $s: case $S: ScribeFlag = not ScribeFlag; endcase
case $q: case $Q: QuietFlag = not QuietFlag; endcase
case $m: case $M: MergeFlag = not MergeFlag; endcase
default: Abort("unrecognized flag")
]
]
let PressFileOpen = false // whether we have a press file open
// one command line parameter per iteration of following loop
while ReadParam(0,"bad arg. reenter: ",ResultVec,SwitchVec,true)!0 ne 0 do [
test SwitchVec!0 eq 0 ifso [
// it's a file name
AllocKnotTables()
EvalParam(ResultVec,"P","You shouldn't get this message: ",arg)
test SearchString(arg,".press",0,false) eq 0 ifnot [
// arg is a press file name; forces a new press file
if PressFileOpen do FinishPress(PressFileName)
CopyString(arg,PressFileName)
VecInit(PressFileName,UNITTabSize,FONTTabSize)
PressFileOpen = true
] ifso [
// arg is a draw file name
if not PressFileOpen do [
// construct press file name
let DotPosn = SearchChar(arg,$.)
if DotPosn eq 0 do DotPosn = (arg>>STRING↑0) + 1
ExtractString(arg,PressFileName,0,DotPosn)
AppendString(".PRESS",PressFileName)
VecInit(PressFileName,UNITTabSize,FONTTabSize)
PressFileOpen = true
]
CopyString(arg,DrawFileName)
PutTemplate(dsp,"$S ← $S: ",PressFileName,DrawFileName)
DoDrawFile(DrawFileName)
PutTemplate(dsp,"*c")
if not MergeFlag do [
FinishPress(PressFileName)
PressFileOpen = false
]
]
] ifnot [
// it's a parameter switch
switchon SwitchVec!1 into [
case $m:
MinDelta = EvalParam(ResultVec,"D","MinDelta: ")
endcase
case $M:
MaxDelta = EvalParam(ResultVec,"D","MaxDelta: ")
endcase
case $d: case $D:
DashOn = EvalParam(ResultVec,"D","Dashed length: ")
endcase
case $o: case $O:
DashOff = EvalParam(ResultVec,"D","Omitted length: ")
endcase
case $u: case $U:
UNITTabSize = EvalParam(ResultVec,"D","Unit table size: ")
endcase
case $k: case $K:
if NoTablesYet do
MAXKNOTS = EvalParam(ResultVec,"D","Maximum knots per spline: ")
endcase
case $p: case $P:
AllocKnotTables()
if PressFileOpen do FinishPress(PressFileName)
EvalParam(ResultVec,"P","Press File: ",PressFileName)
VecInit(PressFileName,UNITTabSize,FONTTabSize)
PressFileOpen = true
endcase
case $l: case $L:
if (SwitchVec!2 ls $0) % (SwitchVec!2 gr $3) do Abort("bad line width")
BrushTable>>FONTS↑((SwitchVec!2)-$0).Size = EvalParam(ResultVec,"D","Line width: ")/4
endcase
case $f: case $F:
if (SwitchVec!2 ls $0) % (SwitchVec!2 gr $3) do Abort("bad font number")
EvalParam(ResultVec,"P","Font name: ",FontFileName)
ParseFontFileName(FontFileName,TextTable,(SwitchVec!2)-$0)
endcase
case $x: case $X:
UserX = EvalParam(ResultVec,"D","X offset: ")
endcase
case $y: case $Y:
UserY = EvalParam(ResultVec,"D","Y offset: ")
endcase
default:
Abort("unrecognized switch")
endcase
]
]
]
if PressFileOpen do FinishPress(PressFileName)
]
and let AllocKnotTables() be [
if NoTablesYet do [
let knottabsize = MAXKNOTS*((size FLOAT)/16)
p0x = GetFixed(knottabsize); p0y = GetFixed(knottabsize)
p1x = GetFixed(knottabsize); p1y = GetFixed(knottabsize)
p2x = GetFixed(knottabsize); p2y = GetFixed(knottabsize)
p3x = GetFixed(knottabsize); p3y = GetFixed(knottabsize)
if p3y eq 0 do Abort("out of space when allocating knot tables")
NoTablesYet = false
]
]
and let FinishPress(PressFileName) be [
if ScribeFlag do [
VecEndEntity()
VecFont("HELVETICA",10,0)
VecPosn(GlobalMaxX/2+GlobalMinX/2,GlobalMinY)
VecText("<==<<")
// print out height in inches to 2 digits; assume height > 0
FLDI(TEMP,GlobalMaxY-GlobalMinY)
FLDI(TEMPOTHER,SCANSperIN)
FDV(TEMP,TEMPOTHER)
FLDI(TEMPOTHER,100)
FMP(TEMP,TEMPOTHER)
PutTemplate(dsp,"Height of $S is $D.$2F0D in.*c",
PressFileName,FTR(TEMP)/100,FTR(TEMP) rem 100)
]
VecFinish(PressFileName,
UserX+PageCenterX-GlobalMaxX/2-GlobalMinX/2,
UserY+PageCenterY-GlobalMaxY/2-GlobalMinY/2)
]