外部変形は データのやり取りをテキストファイルで行うので プログラム言語は 自由に選ぶことができます。図形は機能的かつシンプルなため、数多くのユーザーに受け入れられています。
jscriptで円弧の端点に矢印を描く
/* jscriptで円弧の端点に矢印を描く
@cls & echo off
copy jwc_temp.txt myfiles > nul
cscript //nologo //e:jscript %0 < myfiles > jwc_temp.txt
goto:eof
REM #jww
REM #1ci 円・円弧を指示してください
REM #bz
REM #e
*/
function cipoint(ci, pm) {
x = ci[0]
y = ci[1]
r = ci[2]
p1 = ci[3]
p2 = ci[4]
w = ci[5]
d = ci[6] * Math.PI / 180
co = Math.cos(d)
si = Math.sin(d)
if (pm == -1) { q = p1 } else { q = p2 }
q *= Math.PI / 180.0
xr = r * Math.cos(q)
yr = r * Math.sin(q) * w
a = Math.atan2(yr / w, xr * w) + d
return [[x + xr * co - yr * si, y + xr * si + yr * co], a]
}
function hypot(x, y) {
return Math.sqrt(x * x + y * y)
}
function lnslope(x) { //線の角度を返す
return Math.atan2(x[3] - x[1], x[2] - x[0])
}
function ptdist(pt1, pt2) {
return hypot(pt2[0] - pt1[0], pt2[1] - pt1[1])
}
function polarto(pt, r, d) {
return [pt[0] + r * Math.cos(d), pt[1] + r * Math.sin(d)]
}
function arrow(pt1, d, size, xang, xan2) {
with (Math) {
l = size
d *= PI / 180
a = xang * PI / 180 / 2.0
pt2 = polarto(pt1, l, d - a)
pt4 = polarto(pt1, l, d + a)
if (xan2 == 180) {
sl = ["sl", pt1, pt2, pt4].join(" ").replace(/,/g, " ")
} else {
c = cos(a) - sin(a) * tan( (90.0 - xan2 / 2.0) * PI / 180)
pt3 = polarto(pt1, l * c, d)
sl = ["sl", pt1, pt2, pt3, pt4].join(" ").replace(/,/g, " ")
}
}
return sl
}
size = 5 //矢印の長さ( 図寸 )
xang = 45 //矢印の交角( ﾟ )
xan2 = 120 //矢尻の交角( ﾟ )
f = WScript.StdIn
while (! f.AtEndOfStream) {
F = ($_ = f.ReadLine()).split(/\s+/)
if (/^hp1/i .test($_)) {
if (hp1 = F.slice(1, 3)) for (i = 0; i < hp1.length; i++) hp1[i] *= 1.0;
}
if (/^ci/i .test($_)) { //ci 指示円
for (i = 1; i < F.length; i++) F[i] *= 1.0;
ci1 = F.slice(1, F.length)
if (F.length == 4) {
ci1 = ci1.concat(0, 360, 1, 0)
}
}
}
with (Math) {
pta1 = cipoint(ci1, -1)
pt1 = pta1[0]
a1 = pta1[1]
pta2 = cipoint(ci1, 1)
pt2 = pta2[0]
a2 = pta2[1]
l1 = ptdist(hp1, pt1)
l2 = ptdist(hp1, pt2)
pm = l1 <= l2 ? -1 : 1
pt = pm == 1 ? pt2 : pt1
d = (pm == 1 ? a2 : a1) + PI / 2
}
g = WScript.StdOut
g.WriteLine("bz")
g.WriteLine(arrow(pt, d * 180 / Math.PI, -size*pm, xang, xan2))
