LISP.Выделение объектов в области контура

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 Файл: SelectContour.lsp
 Команды: SCWP; SCCP
Выделение объектов путем указания существующего контура.
В качестве контура могут выступать сплайны, полилинии, дуги, круги, элипсы.
Контур должен быть выпуклым.
Две команды:
SCWP - выбирает объекты рамкой многоугольника
SCCP - выбирает объекты секрамкой многоугольника
Макрос для кнопки: ^C^C(load "SelectContour");SCWP
                   ^C^C(load "SelectContour");SCCP
Автор: Владимир Азарко (VVA) 2007 г.
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;Opt - "_WP" or "_CP"
(defun SelectContour ( opt / en ss lst)
(defun  lib:pt_extents (vlist / tmp)
(setq tmp (mapcar '(lambda (x) (vl-remove-if 'null x))
 (mapcar '(lambda (what) (mapcar '(lambda (x) (nth what x)) vlist))
 '(0 1 2))));_setq
  (list (mapcar '(lambda(x)(apply 'min x)) tmp)(mapcar '(lambda(x)(apply 'max x)) tmp)))
(defun lib:IsPtInView (pt / VCTR Y_Len SSZ X_Pix Y_Pix X_Len Lc Uc)
(setq pt (trans pt 0 1))
(setq VCTR (getvar "VIEWCTR") Y_Len (getvar "VIEWSIZE")
   SSZ (getvar "SCREENSIZE")
   X_Pix (car SSZ) Y_Pix (cadr SSZ)
   X_Len (* (/ X_Pix Y_Pix) Y_Len)
   Lc (polar VCTR (dtr 180.0) (* 0.5 X_Len))
   Uc (polar Lc 0.0 X_Len)
   Lc (polar Lc (dtr 270.0) (* 0.5 Y_Len))
   Uc (polar Uc (dtr 90.0) (* 0.5 Y_Len)))
(if (and (> (car pt) (car Lc))(< (car pt) (car Uc))
    (> (cadr pt) (cadr Lc))(< (cadr pt) (cadr Uc)))
   T nil))
(defun lib:Zoom2Lst( vlist / bl tr Lst OS)
(setq   Lst (lib:pt_extents vlist) bl (car Lst) tr (cadr Lst))
(if (not (and (lib:IsPtInView bl) (lib:IsPtInView tr)))
(progn  (setq OS (getvar "OSMODE"))(setvar "OSMODE" 0)
(command "_.Zoom" "_Window" (trans bl 0 1)(trans tr 0 1)
   "_.Zoom" "0.95x")
(setvar "OSMODE" OS) T) NIL))
(defun TraceObject (obj / typlst typ TracePline TraceACE TraceLine
                         TraceSpline TraceType1Pline
                          TraceType23Pline)
    (defun ZClosed (lst)
    (if (and (vlax-curve-isClosed obj)
         (not(equal (car lst)(last lst) 1e-6)))
      (append lst (list (car lst)))
      lst))
  (defun TracePline (obj / param endparam anginc tparam pt blg
                           ptlst delta inc arcparam flag)
    (setq param (vlax-curve-getStartParam obj)
          endparam (vlax-curve-getEndParam obj)
          anginc (* pi (/ 7.5 180.0)))
    (setq tparam param)
      (while (<= param endparam)
        (setq pt (vlax-curve-getPointAtParam obj param))
        (if (not (equal pt (car ptlst) 1e-12))
          (setq ptlst (cons pt ptlst)))
        (if  (and (/= param endparam)
            (setq blg (abs (vlax-invoke obj 'GetBulge param)))
            (/= 0 blg))
          (progn
            (setq delta (* 4 (atan blg)) ;included angle
                  inc (/ 1.0 (1+ (fix (/ delta anginc))))
                  arcparam (+ param inc))
            (while (< arcparam (1+ param))
              (setq pt (vlax-curve-getPointAtParam obj arcparam)
                    ptlst (cons pt ptlst)
                    arcparam (+ inc arcparam))))
        )
        (setq param (1+ param)))
    (if (and (apply 'and ptlst)
        (> (length ptlst) 1))
     (ZClosed (reverse ptlst)))) ;end
  (defun TraceACE (obj / startparam endparam anginc
                         delta div inc pt ptlst)
    (setq startparam (vlax-curve-getStartParam obj)
          endparam (vlax-curve-getEndParam obj)
          anginc (* pi (/ 5.0 180.0)))
    (if (equal endparam (* pi 2) 1e-12)
      (setq delta endparam)
      (setq delta (NormalAngle (- endparam startparam))))
    (setq div (1+ (fix (/ delta anginc)))
          inc (/ delta div))
    (while (or
        (< startparam endparam)
        (equal startparam endparam 1e-12))
      (setq pt (vlax-curve-getPointAtParam obj startparam)
            ptlst (cons pt ptlst)
            startparam (+ inc startparam)))
    (reverse ptlst)) ;end
  (defun TraceLine (obj)(list (vlax-get obj 'StartPoint)
        (vlax-get obj 'EndPoint)))
  (defun TraceSpline (obj / startparam endparam ncpts inc param
                            fd ptlst pt1 pt2 ang1 ang2 a)
    (setq startparam (vlax-curve-getStartParam obj)
          endparam (vlax-curve-getEndParam obj)
          ncpts (vlax-get obj 'NumberOfControlPoints)
          inc (/ (- endparam startparam) (* ncpts 7))
          param (+ inc startparam)
          fd (vlax-curve-getfirstderiv obj param)
          ptlst (cons (vlax-curve-getStartPoint obj) ptlst))
    (while (< param endparam)
      (setq pt1 (vlax-curve-getPointAtParam obj param)
            ang1 fd
            param (+ param inc)
            pt2 (vlax-curve-getPointAtParam obj param)
            fd (vlax-curve-getfirstderiv obj param)
            ang2 fd
            a (abs (3d_angw1w2 ang1 ang2)))
      (if (> a 0.00218166)(setq ptlst (cons pt1 ptlst))))
    (if (not (equal
          (setq pt1 (vlax-curve-getEndPoint obj)) (car ptlst) 1e-8))
      (setq ptlst (cons pt1 ptlst)))
    (reverse ptlst)) ;end
  (defun TraceType1Pline (obj / ptlst objlst lst)
    (setq ptlst (list (vlax-curve-getStartPoint obj))
          objlst (vlax-invoke obj 'Explode))
    (foreach x objlst
      (setq lst (TraceACE x))
      (if (not (equal (car lst) (last ptlst) 1e-8))
        (setq lst (reverse lst)))
      (setq ptlst (append ptlst (cdr lst)))
      (vla-delete x))(ZClosed  ptlst)) ;end
  (defun TraceType23Pline (obj / objlst ptlst lastpt)
    (setq objlst (vlax-invoke obj 'Explode)
          lastpt (vlax-get (last objlst) 'EndPoint))
    (foreach x objlst
      (setq ptlst (cons (vlax-get x 'StartPoint) ptlst))
      (vla-delete x))(ZClosed (reverse (cons lastpt ptlst)))) ;end
  (defun Trace3DPline (obj / coord ptlst)
    (setq coord (vlax-get obj 'Coordinates))
    (repeat (/ (length coord) 3)
      (setq ptlst (cons (list (car coord) (cadr coord)(caddr coord)) ptlst))
      (setq coord (cdddr coord)))(ZClosed (reverse ptlst))) ;end
(defun NormalAngle (a)(if (numberp a)(angtof (angtos a 0 14) 0)))
(defun 3d_angw1w2 (Wekt1 Wekt2 / CosA)
 (if (equal (setq CosA (/ (apply '+ (mapcar '* Wekt1 Wekt2))
              (distance '(0 0 0) Wekt1) (distance '(0 0 0) Wekt2))) -1.0 1e-6)
  Pi
  (if (equal CosA 0.0 1e-6) (* 0.5 PI)(atan (sqrt (- 1 (* CosA CosA))) CosA))))
  (setq typlst '("AcDb2dPolyline" "AcDbPolyline" "AcDb3dPolyline" "AcDbCircle"
         "AcDbArc" "AcDbEllipse" "AcDbSpline" "AcDbLine"))
  (or (eq (type obj) 'VLA-OBJECT)
    (setq obj (vlax-ename->vla-object obj)))
  (setq typ (vlax-get obj 'ObjectName))
  (if (vl-position typ typlst)
    (cond ((or (eq typ "AcDb2dPolyline") (eq typ "AcDbPolyline"))
      (cond ((or
               (not (vlax-property-available-p obj 'Type))
               (= 0 (vlax-get obj 'Type)))
              (TracePline obj))
            ((or (= 3 (vlax-get obj 'Type)) (= 2 (vlax-get obj 'Type)))
              (TraceType23Pline obj))
            ((= 1 (vlax-get obj 'Type))
              (TraceType1Pline obj))))
       ((eq typ "AcDbLine")(TraceLine obj))
       ((or (eq typ "AcDbCircle") (eq typ "AcDbArc") (eq typ "AcDbEllipse"))
         (TraceACE obj))
       ((eq typ "AcDbSpline")(TraceSpline obj))
       ((eq typ "AcDb3dPolyline")(Trace3DPline obj))
    )))
(vl-load-com)
  (setq en (car(entsel "\nУкажите контур: ")))
  (if (and en (wcmatch (cdr(assoc 0 (entget en))) "*POLYLINE,SPLINE,CIRCLE,ARC,ELLIPSE"))
    (progn
      (setq lst (TraceObject (vlax-ename->vla-object en)))
      (lib:Zoom2Lst lst);_Гарантированно полилиния на экране
      (setq lst (mapcar '(lambda(x)(trans x 0 1)) lst))
      (setq lst (mapcar '(lambda(x)(list (car x)(cadr x))) lst))
(if (setq ss (ssget opt lst))(SSSETFIRST ss ss))
(setq ss nil)))(princ))
;_Select Contour Window Polygon
(defun C:SCWP ()(SelectContour "_WP"))
;_Select Contour Crossing Polygon
(defun C:SCCP ()(SelectContour "_CP"))
(princ "\nНаберите в командной строке SCWP или SCCP")