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Double Offset
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Is there a plugin that works like the offset tool but offsets the edge to both directions at once?
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Perhaps Offset Loops [hidden] in dropdown menu of Quad Face Tools? Use Control key to get the dual offset. I think TT said previously it's still in development and it's not very robust.
tut here from Winning with SU
https://www.youtube.com/watch?v=1fwkI_shOcQ&t=641s -
@unknownuser said:
Is there a plugin that works like the offset tool but offsets the edge to both directions at once?
Sure!
By Sdmitch : MULTIPLE Offsets has this function inside! And many more!
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Thanks for the ideas. The Offset loops keep crashing for me and the multiple offset script isn't in "realtime" like the offset tool in SU but I'll look into them.
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Maybe you can ask Sdmitch to modify its plugin for have repetition of the function at each new selection ?
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TIG's offset can do it - i modified the code to repeat the steps one positive and one negative values. works well, though there are some odd imprecisions.
https://sketchucation.com/forums/viewtopic.php?p=331303#p331303
let me know if you want the code pasted in too
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Yes please post the modified code.
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hope TIG is ok with it:
main 2 routines:
@@dist=nil def initialize(dist=nil) @toolname="extrudeEdgesByOffset" if dist==0 puts 'Extrude Edges by Offset' + '; Offset cannot be 0.' return nil end#if model=Sketchup.active_model ss=model.selection edges=[] ss.each{|e|edges << e if e.class==Sketchup;;Edge} if not edges[1] if not dist UI.messagebox('Extrude Edges by Offset') + ('; Must Select >=2 Edges.') else puts 'Extrude Edges by Offset' + '; Must Select >=2 Edges.' end return nil end#if verts=[] edges.each{|e| verts << e.vertices} verts.flatten! verts.uniq! pts=[] verts.each{|v| pts << v.position} cop=true vec=Geom;;Vector3d.new(0,0,0) edges[0..-2].each_with_index{|e,i| vec=e.line[1].cross(edges[i+1].line[1])} vec=Z_AXIS.clone if vec.length==0 ### all in line plane=[pts[0],vec] pts.each{|p| if not p.on_plane?(plane) cop=false break end } if not dist if not cop UI.messagebox('Extrude Edges by Offset') + ('; Edges must be coplanar.') return nil end @@dist=0.to_l if not @@dist Sketchup;;set_status_text(("Extrude Edges by Offset")+"; "+("Distance; "), SB_PROMPT) results=inputbox(["Distance; "],[@@dist],"Extrude Edges by Offset"+"...") return nil if not results if results[0]==0 UI.messagebox('Extrude Edges by Offset'+'; Offset cannot be 0!'+"\n"+"Try again"+"...") results=inputbox(["Distance; "],[@@dist],"Extrude Edges by Offset"+"...") return nil if not results or results[0]==0 end#if @@dist=results[0] else ### dist passed as arg if not cop puts 'Extrude Edge by Offset'+'; Edges must be coplanar.' return nil end @@dist=dist.to_l end#if ### model.start_operation("Extrude Edges by Offset"+' '+@@dist.to_s) dist=@@dist group=model.active_entities.add_group() ents=group.entities ### if edges.length==verts.length ### looped ### tface=ents.add_face(pts) ### fverts=tface.outer_loop.vertices fpts=[] 0.upto(fverts.length-1) do |a| vec1=(fverts[a].position-fverts[a-(fverts.length-1)].position).normalize vec2=(fverts[a].position-fverts[a-1].position).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=180.degrees if vec1.parallel?(vec2) vec3.length=dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) if fpts.length > 0 if not (vec2.parallel?(fpts.last.vector_to(fverts[a].position.transform(t)))) t=Geom;;Transformation.new(vec3.reverse) end end fpts << fverts[a].position.transform(t) end end nface=ents.add_face(fpts) tface.erase! if tface.valid? and dist>0 nface.erase! if nface.valid? and dist<0 face=nil; ents.each{|e|face=e if e.class==Sketchup;;Face} face.reverse! if face.normal.z<0 ol=face.outer_loop verts=ol.vertices if dist<0 il=(face.loops-[ol])[0] verts=il.vertices if dist>0 verts.each_with_index{|vert,a| vec1=(verts[a].position.vector_to(verts[a-(verts.length-1)].position)).normalize vec2=(verts[a].position.vector_to(verts[a-1].position)).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=90.degrees if vec1.parallel?(vec2) vec3.length= -dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) p=verts[a].position pt=p.transform(t) ents.add_line(p,pt) end } ### tr=Geom;;Transformation.new() len=ents.length len.times{ents.intersect_with(true, tr, ents, tr, true, ents.to_a)} ### cedges=[]; ents.each{|e|cedges << e if e.class==Sketchup;;Edge} ### else ### open ended ### edges.each{|e|ents.add_line(e.start.position, e.end.position)} edges=ents.to_a es=[] ee=[] se=[] edges.each{|e| if not e.start.edges[1] es=e.start ee=e.end se=e break elsif not e.end.edges[1] es=e.end ee=e.start se=e break end#if } nedges=[se] verts=[es,ee] (edges.length-1).times{ edges.each{|e| next if nedges.include?(e) if e.start==ee verts << e.vertices ee=e.end nedges << e elsif e.end==ee verts << e.vertices ee=e.start nedges << e end } } verts.flatten! verts.uniq! ### opts=[] verts.each_with_index{|vert,a| if a==0 #special case for start vertex v=verts[a].position.vector_to(verts[a+1].position).normalize f=dist/dist.abs t=Geom;;Transformation.rotation(verts[0].position, vec, 90.degrees*f) vec3=v.transform(t) vec3.length=dist.abs opts << verts[a].position.transform(vec3) elsif a==verts.length-1 #special case for end vertex v=verts[a-1].position.vector_to(verts[a].position).normalize f=dist/dist.abs t=Geom;;Transformation.rotation(verts[a].position, vec, 90.degrees*f) vec3=v.transform(t) vec3.length=dist.abs opts << verts[a].position.transform(vec3) else vec1=(verts[a].position.vector_to(verts[a+1].position)).normalize vec2=(verts[a].position.vector_to(verts[a-1].position)).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=90.degrees if vec1.parallel?(vec2) vec3.length=dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) if not vec2.parallel?(opts[-1].vector_to(verts[a].position.transform(t))) t=Geom;;Transformation.new(vec3.reverse) end opts << verts[a].position.transform(t) end end#if } begin nedges=ents.add_edges(opts) rescue nedges=[] end pts=[] verts.each{|v|pts << v.position} ents.erase_entities(edges) begin edges=ents.add_edges(pts) rescue edges=[] end pts.each_with_index{|p,i|ents.add_line(pts[i],opts[i])} ### tr=Geom;;Transformation.new() len=ents.length len.times{ents.intersect_with(true, tr, ents, tr, true, ents.to_a)} ### cedges=[]; ents.each{|e|cedges << e if e.class==Sketchup;;Edge} cedges.length.times{ ents.to_a.each{|e| next if e.class!=Sketchup;;Edge or not e.valid? e.find_faces } } ents.to_a.each{|e|e.reverse! if e.class==Sketchup;;Face and e.normal.z<0} ### end#if ### model.commit_operation # CREATE REVERSE GROUP model.start_operation("Extrude Edges by Offset - Reverse Side"+' '+@@dist.to_s) dist=@@dist*-1 group=model.active_entities.add_group() ents=group.entities ### if edges.length==verts.length ### looped ### tface=ents.add_face(pts) ### fverts=tface.outer_loop.vertices fpts=[] 0.upto(fverts.length-1) do |a| vec1=(fverts[a].position-fverts[a-(fverts.length-1)].position).normalize vec2=(fverts[a].position-fverts[a-1].position).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=180.degrees if vec1.parallel?(vec2) vec3.length=dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) if fpts.length > 0 if not (vec2.parallel?(fpts.last.vector_to(fverts[a].position.transform(t)))) t=Geom;;Transformation.new(vec3.reverse) end end fpts << fverts[a].position.transform(t) end end nface=ents.add_face(fpts) tface.erase! if tface.valid? and dist>0 nface.erase! if nface.valid? and dist<0 face=nil; ents.each{|e|face=e if e.class==Sketchup;;Face} face.reverse! if face.normal.z<0 ol=face.outer_loop verts=ol.vertices if dist<0 il=(face.loops-[ol])[0] verts=il.vertices if dist>0 verts.each_with_index{|vert,a| vec1=(verts[a].position.vector_to(verts[a-(verts.length-1)].position)).normalize vec2=(verts[a].position.vector_to(verts[a-1].position)).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=90.degrees if vec1.parallel?(vec2) vec3.length= -dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) p=verts[a].position pt=p.transform(t) ents.add_line(p,pt) end } ### tr=Geom;;Transformation.new() len=ents.length len.times{ents.intersect_with(true, tr, ents, tr, true, ents.to_a)} ### cedges=[]; ents.each{|e|cedges << e if e.class==Sketchup;;Edge} ### else ### open ended ### edges.each{|e|ents.add_line(e.start.position, e.end.position)} edges=ents.to_a es=[] ee=[] se=[] edges.each{|e| if not e.start.edges[1] es=e.start ee=e.end se=e break elsif not e.end.edges[1] es=e.end ee=e.start se=e break end#if } nedges=[se] verts=[es,ee] (edges.length-1).times{ edges.each{|e| next if nedges.include?(e) if e.start==ee verts << e.vertices ee=e.end nedges << e elsif e.end==ee verts << e.vertices ee=e.start nedges << e end } } verts.flatten! verts.uniq! ### opts=[] verts.each_with_index{|vert,a| if a==0 #special case for start vertex v=verts[a].position.vector_to(verts[a+1].position).normalize f=dist/dist.abs t=Geom;;Transformation.rotation(verts[0].position, vec, 90.degrees*f) vec3=v.transform(t) vec3.length=dist.abs opts << verts[a].position.transform(vec3) elsif a==verts.length-1 #special case for end vertex v=verts[a-1].position.vector_to(verts[a].position).normalize f=dist/dist.abs t=Geom;;Transformation.rotation(verts[a].position, vec, 90.degrees*f) vec3=v.transform(t) vec3.length=dist.abs opts << verts[a].position.transform(vec3) else vec1=(verts[a].position.vector_to(verts[a+1].position)).normalize vec2=(verts[a].position.vector_to(verts[a-1].position)).normalize vec3=(vec1+vec2).normalize if vec3.valid? ang=vec1.angle_between(vec2)/2 ang=90.degrees if vec1.parallel?(vec2) vec3.length=dist/Math;;sin(ang) t=Geom;;Transformation.new(vec3) if not vec2.parallel?(opts[-1].vector_to(verts[a].position.transform(t))) t=Geom;;Transformation.new(vec3.reverse) end opts << verts[a].position.transform(t) end end#if } begin nedges=ents.add_edges(opts) rescue nedges=[] end pts=[] verts.each{|v|pts << v.position} ents.erase_entities(edges) begin edges=ents.add_edges(pts) rescue edges=[] end pts.each_with_index{|p,i|ents.add_line(pts[i],opts[i])} ### tr=Geom;;Transformation.new() len=ents.length len.times{ents.intersect_with(true, tr, ents, tr, true, ents.to_a)} ### cedges=[]; ents.each{|e|cedges << e if e.class==Sketchup;;Edge} cedges.length.times{ ents.to_a.each{|e| next if e.class!=Sketchup;;Edge or not e.valid? e.find_faces } } ents.to_a.each{|e|e.reverse! if e.class==Sketchup;;Face and e.normal.z<0} ### end#if ### model.commit_operation Sketchup.send_action("selectSelectionTool;") end#def
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