`;;;CADALYST 10/05 Tip 2065: HatchMaker.lsp Hatch Maker (c) 2005 Larry Schiele`

```
```;;;* ====== B E G I N C O D E N O W ======

;;;* HatchMaker.lsp written by Lanny Schiele at TMI Systems Design Corporation

;;;* Lanny.Schiele@tmisystems.com

;;;* Tested on AutoCAD 2002 & 2006. -- does include a 'VL' function -- should work on Acad2000 on up.

(defun C:DrawHatch (/)

(command "undo" "be")

(setq os (getvar "OSMODE"))

(setvar "OSMODE" 0)

(command "UCS" "w")

(command "PLINE" "0,0" "0,1" "1,1" "1,0" "c")

(command "zoom" "c" "0.5,0.5" 1.1)

(setvar "OSMODE" os)

(setvar "SNAPMODE" 1)

(setvar "SNAPUNIT" (list 0.01 0.01))

(command "undo" "e")

(alert

"Draw pattern within 1x1 box using LINE or POINT entities only..."

)

(princ)

)

(defun C:HMK (/ round dxf ListToFile

user SelSet SelSetSize ssNth

Ent EntInfo EntType pt1 pt2

Dist AngTo AngFrom XDir YDir

Gap DeltaX DeltaY AngZone Counter

Ratio Factor HatchName HatchDescr

FileLines FileLines FileName

Scaler ScaledX ScaledY RF x

y h _AB _BC _AC

_AD _DE _EF _EH _FH

DimZin

)

;;;* BEGIN NESTED FUNCTIONS

(defun round (num)

(if (>= (- num (fix num)) 0.5)

(fix (1+ num))

(fix num)

)

)

(defun dxf (code EnameOrElist / VarType)

(setq VarType (type EnameOrElist))

(if (= VarType (read "ENAME"))

(cdr (assoc code (entget EnameOrElist)))

(cdr (assoc code EnameOrElist))

)

)

(defun ListToFile (TextList FileName DoOpenWithNotepad

AsAppend / TextItem

File RetVal

)

(if (setq File (open FileName

(if AsAppend

"a"

"w"

)

)

)

(progn

(foreach TextItem TextList

(write-line TextItem File)

)

(setq File (close File))

(if DoOpenWithNotepad

(startapp "notepad" FileName)

)

)

)

(FindFile FileName)

)

;;;* END NESTED FUNCTIONS

(princ

(strcat

"\n."

"\n 0,1 ----------- 1,1"

"\n | | "

"\n | Lines and | "

"\n | points must | "

"\n | be snapped | "

"\n | to nearest | "

"\n | 0.01 | "

"\n | | "

"\n 0,0 ----------- 1,0"

"\n."

"\nNote: Lines must be drawn within 0,0 to 1,1 and lie on a 0.01 grid."

)

)

; (textscr)

(getstring "\nHit [ENTER] to continue...")

(princ

"\nSelect lines and/or points within 1x1 pattern for new hatch pattern..."

)

(while (not (setq SelSet (ssget (list (cons 0 "LINE,POINT")))))

)

(setq ssNth 0

SelSetSize (sslength SelSet)

DimZin (getvar "DIMZIN")

)

(setvar "DIMZIN" 11)

(if (> SelSetSize 0)

(princ "\nAnalyaing entities...")

)

(while (< ssNth SelSetSize)

(setq Ent (ssname SelSet ssNth)

EntInfo (entget Ent)

EntType (dxf 0 EntInfo)

ssNth (+ ssNth 1)

)

(cond

((= EntType "POINT")

(setq pt1 (dxf 10 EntInfo)

FileLine (strcat "0,"

(rtos (car pt1) 2 6)

","

(rtos (cadr pt1) 2 6)

",0,1,0,-1"

)

)

(princ (strcat "\n" FileLine))

(setq FileLines (cons FileLine FileLines))

)

((= EntType "LINE")

(setq pt1 (dxf 10 EntInfo)

pt2 (dxf 11 EntInfo)

Dist (distance pt1 pt2)

AngTo (angle pt1 pt2)

AngFrom (angle pt2 pt1)

IsValid nil

)

(if

(or (equal (car pt1) (car pt2) 0.0001)

(equal (cadr pt1) (cadr pt2) 0.0001)

)

(setq DeltaX 0

DeltaY 1

Gap (- Dist 1)

IsValid T

)

(progn

(setq Ang (if (< AngTo pi)

AngTo

AngFrom

)

AngZone (fix (/ Ang (/ pi 4)))

XDir (abs (- (car pt2) (car pt1)))

YDir (abs (- (cadr pt2) (cadr pt1)))

Factor 1

RF 1

)

(cond

((= AngZone 0)

(setq DeltaY (abs (sin Ang))

DeltaX (abs (- (abs (/ 1.0 (sin Ang))) (abs (cos Ang)))

)

)

)

((= AngZone 1)

(setq DeltaY (abs (cos Ang))

DeltaX (abs (sin Ang))

)

)

((= AngZone 2)

(setq DeltaY (abs (cos Ang))

DeltaX (abs (- (abs (/ 1.0 (cos Ang))) (abs (sin Ang)))

)

)

)

((= AngZone 3)

(setq DeltaY (abs (sin Ang))

DeltaX (abs (cos Ang))

)

)

)

(if (not (equal XDir YDir 0.001))

(progn

(setq Ratio (if (< XDir YDir)

(/ YDir XDir)

(/ XDir YDir)

)

RF (* Ratio Factor)

Scaler (/ 1

(if (< XDir YDir)

XDir

YDir

)

)

)

(if (not (equal Ratio (round Ratio) 0.001))

(progn

(while

(and

( Factor 1) (<= Factor 100))

(progn

(setq _AB (* XDir Scaler Factor)

_BC (* YDir Scaler Factor)

_AC (sqrt (+ (* _AB _AB) (* _BC _BC)))

_EF 1

x 1

)

(while (< x (- _AB 0.5))

(setq y (* x (/ YDir XDir))

h (if (< Ang (/ pi 2))

(- (+ 1 (fix y)) y)

(- y (fix y))

)

)

(if (< h _EF)

(setq _AD x

_DE y

_AE (sqrt (+ (* x x) (* y y)))

_EF h

)

)

(setq x (+ x 1))

)

(if ( Ang (/ pi 2))

(- _EH)

_EH

)

)

DeltaY (+ _FH)

Gap (- Dist _AC)

IsValid T

)

)

)

)

)

)

)

)

(if (= Factor 1)

(setq Gap (- Dist (abs (* Factor (/ 1 DeltaY))))

IsValid T

)

)

)

)

(if

IsValid

(progn

(setq FileLine

(strcat

(angtos AngTo 0 6)

","

(rtos (car pt1) 2 8)

","

(rtos (cadr pt1) 2 8)

","

(rtos DeltaX 2 8)

","

(rtos DeltaY 2 8)

","

(rtos Dist 2 8)

","

(rtos Gap 2 8)

)

)

(princ (strcat "\n" FileLine))

(setq FileLines (cons FileLine FileLines))

)

(princ (strcat "\n * * * Line with invalid angle "

(angtos AngTo 0 6)

(chr 186)

" omitted. * * *"

)

)

)

)

((princ

(strcat "\n * * * Invalid entity " EntType " omitted.")

)

)

)

)

(setvar "DIMZIN" DimZin)

(if

(and

FileLines

(setq HatchDescr

(getstring T

"\nBriefly describe this hatch pattern: "

)

)

(setq FileName (getfiled "Hatch Pattern File"

"C:\\Hatch\\"

"pat"

1

)

)

)

(progn

(if (= HatchDescr "")

(setq HatchDescr "Custom hatch pattern")

)

(setq HatchName (vl-filename-base FileName)

FileLines (cons (strcat "*" HatchName "," HatchDescr)

(reverse FileLines)

)

)

(princ

"\n============================================================"

)

(princ

(strcat "\nPlease wait while the hatch file is created...\n"

)

)

(ListToFile FileLines FileName nil nil)

(command "delay" 1500) ;delay required so file can be created and found (silly, but req.)

(if (findfile FileName)

(progn

(setvar "HPNAME" HatchName)

(princ (strcat "\nHatch pattern '"

HatchName

"' is ready to use!"

)

)

)

(progn

(princ "\nUnable to create hatch pattern file:")

(princ (strcat "\n " FileName))

)

)

)

(princ

(if FileLines

"\nCancelled."

"\nUnable to create hatch pattern from selected entities."

)

)

)

(princ)

)

(princ "\n ************************************************************** ")

(princ "\n** **")

(princ "\n* HatchMaker.lsp written by Lanny Schiele -- enjoy! *")

(princ "\n* *")

(princ "\n* Type in DRAWHATCH to have the environment created to draw. *")

(princ "\n* Type in HMK to save the pattern you created. *")

(princ "\n** **")

(princ "\n ************************************************************** ")

(princ)

(c:hmk)

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Josiah Schmale

said:that’s good, thanks for sharing,.. I think this is great blog

LikeLike

Lanny Schiele

said:Haha — cool to see my old lisp routine here!

LikeLiked by 1 person