# encoding: UTF-8
# 하판 볼트홀 3+5 비대칭 -> 4+4 대칭 재배치 (판을 새로 생성해 교체, 기존판은 hidden 보존)
m = Sketchup.active_model
cur = m.entities.grep(Sketchup::Group).find { |e| e.name == '조립부원판_20260919' }
raise "하판 없음" if cur.nil?
tr = cur.transformation
best=nil; ba=0.0
cur.entities.grep(Sketchup::Face).each { |f| n=f.normal.transform(tr); next unless n.z<-0.05; if f.area>ba then ba=f.area; best=f end }
pa,pb,pc,pd = Geom.fit_plane_to_points(best.outer_loop.vertices.map{|v| v.position.transform(tr)})
zf = lambda { |x,y| -(pa*x + pb*y + pd)/pc }
tv = Geom::Vector3d.new(1.0, 0.0, -pa/pc); tv.normalize!
nv = Geom::Vector3d.new(-pa, -pb, -pc);    nv.normalize!; nv.reverse! if nv.z > 0
wv = tv.cross(nv); wv.normalize!

# 기존 홀 실측
olds = best.loops.reject{|l| l.outer?}.map do |l|
  b=Geom::BoundingBox.new; l.vertices.each{|v| b.add(v.position.transform(tr))}
  [((b.min.x.to_mm+b.max.x.to_mm)/2.0).round(2), ((b.min.y.to_mm+b.max.y.to_mm)/2.0).round(2)]
end
rows = olds.group_by{|c| c[1]}
puts "기존 홀 #{olds.size}개 / 열별: " + rows.map{|y,v| "y=#{y} -> #{v.size}개 x=#{v.map{|c| c[0]}.sort.inspect}"}.join(' | ')

YS = rows.keys.sort              # [10753.63, 12002.72]
X0 = 8830.45; X1 = 9210.45
PITCH = (X1 - X0) / 3.0
XS = (0..3).map { |i| (X0 + PITCH*i).round(3) }
R  = 9.0
puts "신규 배치: x=#{XS.inspect} 피치=%.3fmm / y열=#{YS.inspect} / Ø%.1f" % [PITCH, R*2]

outer = best.outer_loop.vertices.map { |v| v.position.transform(tr) }
circle = lambda do |cx, cy|
  c = Geom::Point3d.new(cx.mm, cy.mm, zf.call(cx.mm, cy.mm))
  (0...24).map { |i| a = 2*Math::PI*i/24.0; c.offset(tv, (R*Math.cos(a)).mm).offset(wv, (R*Math.sin(a)).mm) }
end

m.start_operation('볼트홀 4+4 대칭 재배치', true)
g3 = m.entities.add_group
fo = g3.entities.add_face(outer)
raise "외곽면 실패" if fo.nil?
made = 0
YS.each { |yy| XS.each { |xx| hf = g3.entities.add_face(circle.call(xx, yy)); (hf.erase!; made += 1) if hf && hf.valid? } }
fo = g3.entities.grep(Sketchup::Face).max_by { |x| x.area }
nloops = fo.loops.size - 1
fo.reverse! if fo.normal.z > 0
fo.pushpull(-12.mm)
g3.name = '조립부원판_20260919'
cur.name = '조립부원판_구2_홀비대칭_20260919'
cur.hidden = true
m.commit_operation

puts "뚫은 홀=#{made} / 신규 하면 내부루프=#{nloops}"
b = g3.bounds
puts "신규하판 solid=#{g3.manifold?} vol=%.0fmm3 bbox x %.2f..%.2f y %.2f..%.2f z %.2f..%.2f" %
  [g3.volume.to_f*(25.4**3), b.min.x.to_mm,b.max.x.to_mm,b.min.y.to_mm,b.max.y.to_mm,b.min.z.to_mm,b.max.z.to_mm]

# 검증: 실제 생성된 홀 실측 + 좌우/전후 대칭
t3 = g3.transformation
bf=nil; ba3=0.0
g3.entities.grep(Sketchup::Face).each{|f| n=f.normal.transform(t3); next unless n.z<-0.05; if f.area>ba3 then ba3=f.area; bf=f end}
cs = bf.loops.reject{|l| l.outer?}.map do |l|
  bb=Geom::BoundingBox.new; l.vertices.each{|v| bb.add(v.position.transform(t3))}
  [((bb.min.x.to_mm+bb.max.x.to_mm)/2.0).round(3), ((bb.min.y.to_mm+bb.max.y.to_mm)/2.0).round(3), (bb.max.y.to_mm-bb.min.y.to_mm).round(2)]
end
cs.sort_by!{|c| [c[1], c[0]]}
puts "검증 홀 #{cs.size}개:"
cs.group_by{|c| c[1]}.each{|y,v| puts "  y=#{y} : #{v.size}개  x=#{v.map{|c| c[0]}.inspect}  Ø(y방향)=#{v.map{|c| c[2]}.uniq.inspect}"}
xc = (b.min.x.to_mm + b.max.x.to_mm)/2.0
mism = cs.map{|c| d = cs.map{|o| ((o[0]-(2*xc-c[0])).abs + (o[1]-c[1]).abs)}.min; d}.max
yc = (b.min.y.to_mm + b.max.y.to_mm)/2.0
mismy = cs.map{|c| cs.map{|o| ((o[0]-c[0]).abs + (o[1]-(2*yc-c[1])).abs)}.min}.max
puts "좌우(x) 미러 최대불일치=%.4fmm / 전후(y) 미러 최대불일치=%.4fmm" % [mism, mismy]
puts "연단거리: x좌 %.2f / x우 %.2f / y하 %.2f / y상 %.2f (권장 36.0)" %
  [XS.min - b.min.x.to_mm, b.max.x.to_mm - XS.max, YS.min - b.min.y.to_mm, b.max.y.to_mm - YS.max]
m.save
puts "SAVED #{File.mtime(m.path)}"
nil