Su二次开发--墙面竖向龙骨的生成

g = Sketchup.active_model.selection[0]
gps = g.entities.grep(Sketchup::Group)
gp1 = gps.find{|gp| gp.get_attribute("DFC_AN_ZsggTool","构件群组") == "竖骨线组"}
path_hash = {
  s_sk_path:      File.expand_path("../曲面竖向龙骨.skp", __FILE__)
}
hash.merge!(path_hash)
class A
  # 初始化方法
  def initialize(g,gp1,hash)
    @g = g
    @gp1 = gp1    @hash = hash
  end
  # 竖向龙骨方法
  def skeel
    definitions = Sketchup.active_model.definitions
     d = definitions.load @hash[:s_sk_path]
     d_depth = d.bounds.depth
    if @hash["墙类型"] == "平形"
       mypt = @mg.entities.add_cpoint ORIGIN
      @gp1.entities.each{|e|
          need_df_name = get_SLG_df_name(e)
          need_df = definitions.find{|df| df.name==need_df_name}
           pt = e.vertices.sort_by{|v| v.position.z}.map(&:position).first
           pt.offset!(@f_normal.reverse,d_depth/2)
          if need_df.nil?
            need_df = get_SLG_defintion(e, d, definitions)
          end
          @mg.entities.add_instance need_df,pt
      }
      @mg.entities.erase_entities mypt
    elsif @hash["墙类型"] == "弧形"
        mypt = @mg.entities.add_cpoint ORIGIN
        @gp1.entities.each{|e|
          need_df_name = get_SLG_df_name(e)
          need_df = definitions.find{|df| df.name==need_df_name}
           pt,pt_ = e.vertices.sort_by{|v| v.position.z}.map(&:position)
           vec = e.get_attribute("线","方向")
           pt.offset!(vec,d_depth/2)
            if need_df.nil?
            need_df = get_SLG_defintion(e, d, definitions)
          end
          copins = @mg.entities.add_instance need_df,pt
          fz_vec = X_AXIS.reverse.transform copins.transformation  #凹口向量
          circle_vec = e.get_attribute("线","方向")                #龙骨朝向圆心的向量
          angle = fz_vec.angle_between circle_vec
          face = d.entities.grep(Sketchup::Face).first
           c_p = face.bounds.center.transform copins.transformation
          t1 = Geom::Transformation.rotation c_p, Z_AXIS, angle
          t1 = Geom::Transformation.rotation c_p, Z_AXIS.reverse, angle if not (circle_vec.samedirection? fz_vec.transform t1)
          copins.transform! t1
      }
        @mg.entities.erase_entities mypt
    elsif @hash["墙类型"] == "倒弧形"
        edges = @gp1.entities.select{|ent| ent.typename == "Edge"}  #竖线组竖线
        slg_edges = get_Sorted_edges(edges)
        slg_edges.each{|e|
          need_df_name = get_SLG_df_name(e)
          need_df = definitions.find{|df| df.name==need_df_name}
          pts = get_pts e
          bp = pts.sort_by{|p| p.z}.first
         if need_df.nil?
            need_df = get_SLG_defintion(e, d, definitions)
          end
          @mg.entities.add_instance need_df, bp
        }
    end
  end
 #获取竖龙骨的定义的名字
  def get_SLG_df_name(e)
       if @hash["墙类型"] == "平形"||@hash["墙类型"] == "弧形"
         sum_l = e.length
         sum_l_s = sum_l.to_mm.to_i.to_s
         return sum_l_s+"_para_SLG"
       elsif @hash["墙类型"] == "倒弧形"
        sum_l = e.map(&:length).inject(:+)
        sum_l_s = sum_l.to_mm.to_i.to_s
        if e.length > 1
          ed0 = e.first
          v0, v1 = ed0.vertices
          ed1 = e.find{|ed| ed.vertices.include?(v0) && ed!=ed0}
          if ed1
            common_v = v0
          else
            ed1 = e.find{|ed| ed.vertices.include?(v1) && ed!=ed0}
            common_v = v1
          end
          v0,v1 = [ed0,ed1].map{|ed| ed.vertices.find{|v| v != common_v}}
          common_p, v_p0, v_p1 = [common_v, v0, v1].map(&:position)
          angle = (common_p.vector_to v_p0).angle_between (common_p.vector_to v_p1)
          angle_s = angle.round(2).to_s
        else
          angle_s = "0"
        end
        return sum_l_s+"_"+angle_s+"_arc_SLG12"
        end
      end

  #获取竖龙骨新的定义
  def get_SLG_defintion(e, d, definitions)
    need_df = definitions.add(get_SLG_df_name(e))
     if @hash["墙类型"] == "平形"||@hash["墙类型"] == "弧形"
        need_df.description = "平行墙竖向龙骨"
        copins = need_df.entities.add_instance(d,ORIGIN)
        pt, pt_ =  e.vertices.sort_by{|v| v.position.z}.map(&:position)  #获取底部的点
        vec = pt.vector_to pt_
        face = d.entities.grep(Sketchup::Face).first
        f_normal = face.normal.transform copins.transformation
        c_p = face.bounds.center.transform copins.transformation
        angle = f_normal.angle_between vec
        t0 = Geom::Transformation.rotation c_p, Y_AXIS, angle
        t0 = Geom::Transformation.rotation c_p,Y_AXIS.reverse, angle if not (vec.samedirection? f_normal.transform t0)
        copins.transform! t0
        fz_vec = Z_AXIS.transform copins.transformation         #凹口向量
        angle = fz_vec.angle_between @f_normal                  #墙面向量
        t1 = Geom::Transformation.rotation c_p, Z_AXIS, angle
        t1 = Geom::Transformation.rotation c_p, Z_AXIS.reverse, angle if not (@f_normal.samedirection? fz_vec.transform t0)
        copins.transform! t1 if @hash["墙类型"] == "平形"
        face = copins.explode.find{|e|e.typename=="Face"}
        face.pushpull e.length
        need_df.set_attribute("方向",e.get_attribute("线","方向"))
        return need_df    

        elsif @hash["墙类型"] == "倒弧形"
        pts = get_pts e
        bp = pts.sort_by{|p| p.z}.first
        copins = need_df.entities.add_instance d,ORIGIN #放进小组中
        bp_= pts.sort_by{|p| p.z}[1]
        bp_ed = e.find{|ed| ps = ed.vertices.map(&:position); ps.include?(bp) && ps.include?(bp_)}
        vec_0 = bp.vector_to bp_
        face = d.entities.grep(Sketchup::Face).first
        f_normal = face.normal.transform copins.transformation
        c_p = face.bounds.center.transform copins.transformation
        angle = f_normal.angle_between vec_0
        z_vec = vertical_vec_for_2vec(f_normal, vec_0) #两向量的法向量
        trs = Geom::Transformation.translation [0,0,-d.bounds.depth*0.5]
        trs0 = (Geom::Transformation.rotation c_p, z_vec, angle)
        trs0 = (Geom::Transformation.rotation c_p, z_vec.reverse, angle) if not (f_normal.transform trs0).samedirection? vec_0
        copins.transform! trs0*trs
        fz_vec = Z_AXIS.reverse.transform copins.transformation #凹口向量
        vec_1 = bp_ed.get_attribute "线","方向"                #龙骨朝向圆心的向量
        angle = (fz_vec.angle_between vec_1)
        trs1 = Geom::Transformation.rotation c_p, vec_0, angle
        trs1 = (Geom::Transformation.rotation c_p, vec_0.reverse, angle) if not (fz_vec.transform trs1).samedirection? vec_1
        copins.transform! trs1
        face = copins.explode.find{|e|e.typename=="Face"}
        face.reverse! if face.normal.samedirection? vec_0
        path = need_df.entities.add_edges pts.map{|pt| pt.transform (bp.vector_to ORIGIN)}
        face.followme path
        need_df.entities.erase_entities path
        need_df.entities.grep(Sketchup::Edge).select{|ed| ed.soft = true if ed.length == @hash["竖骨宽"]}
        need_df.set_attribute "竖骨", "方向", vec_1
        return need_df
        end
        end
   #获得一组一组的连接的线
    def get_Sorted_edges(edges)
        bord_eds = edges.select{|ed| (edges-[ed]).select{ |ed_| common_pt(ed, ed_) }.length == 1}  #多条边相连
          x_eds_arr = []                                #存放各个temp_arr
          @use_eds = []                                 #放置已经使用过的edge
          bord_eds.each do |ed|                         #求与ed相连的一串edges, 放于temp_arr
          next if @use_eds.include?(ed)
          @use_eds.push ed
          temp_arr = [ed]
          start_ed = ed
          while 1 do
          con_edge = ([email protected]_eds).find{|ed_| common_pt(start_ed, ed_)}
          if con_edge.nil?
            break
          else
            @use_eds.push con_edge
            temp_arr.push con_edge
            start_ed = con_edge
          end
          end
          x_eds_arr.push temp_arr                       #x_eds_arr中存放一个个的竖线组
        end
        return x_eds_arr
    end

  #获取两个向量之间的法向量
  def vertical_vec_for_2vec(vec1, vec2)
    raise "Error: 两向量平行" if vec1.parallel? vec2
    x1,y1,z1 = vec1.to_a
    x2,y2,z2 = vec2.to_a
    x, y, z  = (y1*z2-y2*z1),(z1*x2-z2*x1),(x1*y2-x2*y1)
    return Geom::Vector3d.new(x, y, z)
  end
 def common_pt(ed1,ed2)
    ed1.vertices.map(&:position).find{|pt| ed2.vertices.map(&:position).include?(pt)}  end
  def get_pts(edges)
    pts = []
    pts << edges.first.vertices.reject{|pt| true if pt.position == common_pt(edges.first,edges[1])}.first.position
    edges.each{|e| e.vertices.each{|v| pts << v.position if (!pts.include?(v.position))}}
    pts
  end
  def combination
   group_SLG = skeel
  end
end
Sketchup.active_model.start_operation ""
A.new(g,gp1,gp2,gp_mesh, gp1_face, hash).combination
Sketchup.active_model.commit_operation

原文地址：https://www.cnblogs.com/zhongshengdong/p/8930906.html