Recursion 在postscript中通过递归更改线条颜色

Recursion 在postscript中通过递归更改线条颜色,recursion,postscript,Recursion,Postscript,我想让我的父亲有多种颜色。我的意思是,我想让我的DoLine使每一条时间线都具有相似但不相同的颜色。所以我做了 /red 0.41 def /green 0.1 def /blue 0.21 def /incRed {/red red 0.01 add} def /incGreen {/green green 0.03 add} def /incBlue {/blue blue 0.05 add} def 我的DoLine /DoLine { incRed incGr

我想让我的父亲有多种颜色。我的意思是,我想让我的
DoLine
使每一条时间线都具有相似但不相同的颜色。所以我做了

/red 0.41 def
/green 0.1 def
/blue 0.21 def 
/incRed {/red red 0.01 add} def 
/incGreen {/green green 0.03 add} def 
/incBlue {/blue blue 0.05 add} def
我的
DoLine

/DoLine 
{ 
    incRed
    incGreen
    incBlue
    red green blue setrgbcolor
    rotation rotate
    0 linelen rlineto
    currentpoint stroke 
    translate 0 0 moveto 
} def
但它只输出一种设置为

/red 0.41 def
/green 0.1 def
/blue 0.21 def 
我错过了什么吗?这是我的全部代码,如果你需要的话

%!

/Helvetica findfont 8 scalefont setfont
/ang1 -141 def
/ang2 {-2 ang1 mul} def
/linelen 36 def
/depth 0 def
/down {/depth depth 1 add def} def
/up {/depth depth 1 sub def} def
/red 0.41 def
/green 0.1 def
/blue 0.21 def
/incRed {/red red 0.01 add} def 
/incGreen {/green green 0.03 add} def 
/incBlue {/blue blue 0.05 add} def

/CrownPos
{
    /x 300 def
    /y 300 def
    x y moveto
} def

/DoLine 
{ 
    incRed
    incGreen
    incBlue
    red green blue setrgbcolor
    rotation rotate
    0 linelen rlineto
    currentpoint stroke 
    translate 0 0 moveto 
} def

/Print
{ 
    gsave 
    .62 .62 scale
    2 setlinewidth
    down DoLine
    depth 8 le
    {
        ang1 rotate Print
            ang2 rotate Print
    } if
    up
    grestore 
} def

/Crown
{
    /rotation 0 def
    CrownPos Print
    stroke
    /rotation 270 def
    CrownPos Print
    stroke
    /rotation 90 def
    CrownPos Print
    stroke
} def



    Crown
600 600 translate
180 rotate Crown 
    showpage

这些颜色增量例程有两个问题:1)它们没有将新值设置回变量中(即缺少
def
),2)它们增量太快,太快到达白色。请改用这些返工版本:

/incRed { /red red 0.0001 add def } def 
/incGreen { /green green 0.0003 add def } def 
/incBlue { /blue blue 0.0005 add def } def