将AutoCAD 索引颜色(ACI)转成十六进制格式颜色代码

zark

发贴之前也搜索了相关的颜色转换，有明总的ACI->RGB,也有高飞鸟的ACI<-->HSL格式等，都没看到之前我所需要的ACI->HEX
现在跟大家一起分享一下
;部分函数参考明总帖子
(defun $ACI->HEX (i        /
    ColorIndex-to-TrueColor
    TrueColor-red-value TrueColor-green-value
    TrueColor-blue-value
    $RGB->HEX       BLUE
    COLOR        GREEN
    RED
   )
  (defun ColorIndex-to-TrueColor
  (ci / TrueColor-make colorObj TrueColor)
    (defun TrueColor-make (r g b /)
      (+ (lsh (fix r) 16) (lsh (fix g) 8) (fix b))
    )
    (vl-load-com)
    (and (setq colorObj (vla-getinterfaceobject
     (vlax-get-acad-object)
     "AutoCAD.AcCmColor.16"
   )  ;此处不同版本的CAD后面需要做下修改
  )
  (>= ci 1)
  (<= ci 255)
  (not
    (vl-catch-all-error-p
      (vl-catch-all-apply 'vla-put-ColorIndex (list colorObj ci))
    )
  )
  (setq TrueColor (TrueColor-make
      (vla-get-red colorObj)
      (vla-get-green colorObj)
      (vla-get-blue colorObj)
    )
  )
    )
    TrueColor
  )
  (defun $RGB->HEX (I / A B)
    (defun $ItoH (I /)
      (if (<= i 9)
(itoa i)
(chr (+ i 55))
      )
    )
    (setq a (/ i 16)
   b (rem i 16)
    )
    (strcat ($ItoH a) ($ItoH b))
  )
  (defun TrueColor-red-value (c /)
    (lsh (fix c) -16)
  )
  (defun TrueColor-green-value (c / r)
    (lsh (lsh (fix c) 16) -24)
  )
  (defun TrueColor-blue-value (c /)
    (lsh (lsh (fix c) 24) -24)
  )
  (setq Color (ColorIndex-to-TrueColor i)
Red   (TrueColor-red-value color)
green (TrueColor-green-value color)
blue  (TrueColor-blue-value color)
  )
  (mapcar '$RGB->HEX (List Red green blue))
)
(defun $ACI->SHEX (I / L)
  (setq L ($ACI->HEX I))
  (strcat "#" (car L) (cadr L) (caddr L))
)
;;;测试($ACI->SHEX 1)  #FF0000



该贴已经同步到 zark的微博

vlisp2012

好程序，学习了！！！