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Annotation of researchv10no/cmd/post.src/dpost/draw.ps, revision 1.1

1.1     ! root        1: %
        !             2: % Version 3.3.2 drawing procedures for dpost. Automatically pulled in when
        !             3: % needed.
        !             4: %
        !             5: 
        !             6: /inpath false def
        !             7: /savematrix matrix def
        !             8: 
        !             9: /Dl {
        !            10:        inpath
        !            11:                {pop pop neg lineto}
        !            12:                {newpath neg moveto neg lineto stroke}
        !            13:        ifelse
        !            14: } bind def
        !            15: 
        !            16: /De {
        !            17:        /y1 exch 2 div def
        !            18:        /x1 exch 2 div def
        !            19:        /savematrix savematrix currentmatrix def
        !            20:        neg exch x1 add exch translate
        !            21:        x1 y1 scale
        !            22:        0 0 1 0 360
        !            23:        inpath
        !            24:                {1 0 moveto arc savematrix setmatrix}
        !            25:                {newpath arc savematrix setmatrix stroke}
        !            26:        ifelse
        !            27: } bind def
        !            28: 
        !            29: /Da {
        !            30:        /dy2 exch def
        !            31:        /dx2 exch def
        !            32:        /dy1 exch def
        !            33:        /dx1 exch def
        !            34:        dy1 add neg exch dx1 add exch
        !            35:        dx1 dx1 mul dy1 dy1 mul add sqrt
        !            36:        dy1 dx1 neg atan
        !            37:        dy2 neg dx2 atan
        !            38:        inpath
        !            39:                {arc}
        !            40:                {newpath arc stroke}
        !            41:        ifelse
        !            42: } bind def
        !            43: 
        !            44: /DA {
        !            45:        /dy2 exch def
        !            46:        /dx2 exch def
        !            47:        /dy1 exch def
        !            48:        /dx1 exch def
        !            49:        dy1 add neg exch dx1 add exch
        !            50:        dx1 dx1 mul dy1 dy1 mul add sqrt
        !            51:        dy1 dx1 neg atan
        !            52:        dy2 neg dx2 atan
        !            53:        inpath
        !            54:                {arcn}
        !            55:                {newpath arcn stroke}
        !            56:        ifelse
        !            57: } bind def
        !            58: 
        !            59: /Ds {
        !            60:        /y2 exch def
        !            61:        /x2 exch def
        !            62:        /y1 exch def
        !            63:        /x1 exch def
        !            64:        /y0 exch def
        !            65:        /x0 exch def
        !            66:        x0 5 x1 mul add 6 div
        !            67:        y0 5 y1 mul add -6 div
        !            68:        x2 5 x1 mul add 6 div
        !            69:        y2 5 y1 mul add -6 div
        !            70:        x1 x2 add 2 div
        !            71:        y1 y2 add -2 div
        !            72:        inpath
        !            73:                {curveto}
        !            74:                {newpath x0 x1 add 2 div y0 y1 add -2 div moveto curveto stroke}
        !            75:        ifelse
        !            76: } bind def

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