[Closed] UVW Seem with GW

good luck…

You seem to be insinuating that gw is not the way go to on this one? then what would you suggest?

Try to draw 1000 GW lines and see the viewport performance.

Yeah GW doesn’t see to great when it comes to high volumes. That is a bummer.

The rough of splines could work but may become taxing depending on the functionality…

hmmm

   If you don’t need to update the model position or topology, then you could gather the vertices positions outside the callback, which will give the callback a huge boost.
   
   Could also use a trigger on mouse up/down if position or topology change and renew the array of points.
   
   However, as Denis said, the biggest drop in performance is going to be in getting the uvw open edges.
   
   Unfortunately Max does not provide a function for that, so you need to do some dirty work to get them. Not really hard, but painfully slow.
   
   Once you get the open edges they would need either to be converted to a sorted array of point (per cluster I guess) or you could draw one line at time, which also adds some performance drop.
   
   In this example, 60,000 faces, I do not see any mayor performance drop, but it is completely different than gathering and drawing just the uvw open edges.

   delete objects
  myBox = box width:10 height:10 length:10 lengthsegs:100 widthsegs:100 heightsegs:100 pos:[0,0,50] wirecolor:red
  convertToPoly myBox
   
  unRegisterRedrawViewsCallback showObjectNames
  gw.setTransform (Matrix3 1)
  vertsPts = for i = 1 to myBox.numVerts collect polyop.getVert myBox i
  
  fn showObjectNames =
  (
  	gw.setColor #line green
  	gw.polyLine vertsPts true
  )
  registerRedrawViewsCallback showObjectNames
  forceCompleteRedraw()
    

Here is a script that might be useful. Haven’t tested too much, but it seems to work, although it’s very slow.

There is room for optimization and improvements so I hope someone can get their hands on it. Meanwhile I’ll try to work on it a little more.

Hope someone find it useful.

 (
 
 	unRegisterRedrawViewsCallback cbDrawOpenEdges
 	
 	global RO_DISPLAY_UV_OE
 	global cbDrawOpenEdges
 	global cbSelectionChanged
 	
 	local vertexPos = #()
 	local uvChannel
 	local edgesColor = [0,255,0]
 
 	fn cbDrawOpenEdges = (
 		gw.setTransform (Matrix3 1)
 		gw.setColor #line edgesColor
 		for j in vertexPos do gw.polyLine j false
 	)
 
 	fn cbSelectionChanged mForce:false = (
 
 		unRegisterRedrawViewsCallback cbDrawOpenEdges
 		
 		if ($ != undefined) do (
 			
 			setwaitcursor()
 
 			st = timeStamp()
 
 			obj = snapshotasmesh selection[1]
 			allChannels = #()
 			
 			for j = 1 to meshop.getNumMaps obj do (
 				if (meshop.getMapSupport obj j == true) do append allChannels j
 			)
 			
 			RO_DISPLAY_UV_OE.ddl_channel.items = for j in allChannels collect j as string
 			
 			if (mForce == false) do (
 				uvChannel = allChannels[1]
 				RO_DISPLAY_UV_OE.ddl_channel.selection = 1
 			)
 
 			numTFaces = meshop.getNumMapFaces obj uvChannel
 			numTVerts = meshop.getNumMapVerts obj uvChannel
 			
 			facesTVertsIdx = for j = 1 to numTFaces collect (meshop.getMapFace obj uvChannel j)
 			
 			emesh = trimesh()
 			emesh.numverts = numTVerts
 			emesh.numfaces = numTFaces
 			
 			for j = 1 to numTFaces do (
 				objFaceTVerts = facesTVertsIdx[j]
 				setFace emesh j objFaceTVerts.x objFaceTVerts.y objFaceTVerts.z
 			)
 			
 			meshOpenEdges = meshop.getOpenEdges emesh
 			sharedFaces = meshop.getFacesUsingEdge emesh meshOpenEdges
 
 			vertexPos = #()
 			foundEdges = #()
 			
 			for j in sharedFaces do (
 				objFaceVerts = getFace obj j
 				
 				edge1 = j*3 - 2
 				edge2 = j*3 - 1
 				edge3 = j*3
 
 				edges = #{edge1, edge2, edge3} * meshOpenEdges
 					
 				if (finditem edges edge1) > 0 do (
 					v1Idx = objFaceVerts.x
 					v2Idx = objFaceVerts.y
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						append foundEdges [v2Idx, v1Idx]
 						append vertexPos #(v1, v2)
 					)
 				)
 				if (finditem edges edge2) > 0 do (
 					v1Idx = objFaceVerts.y
 					v2Idx = objFaceVerts.z
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						append foundEdges [v2Idx, v1Idx]
 						append vertexPos #(v1, v2)
 					)
 				)
 				if (finditem edges edge3) > 0 do (
 					v1Idx = objFaceVerts.z
 					v2Idx = objFaceVerts.x
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						append foundEdges [v2Idx, v1Idx]
 						append vertexPos #(v1, v2)
 					)
 				)
 					
 			)
 
 			format "Found %	UV Open Edges in %s
" vertexPos.count ((timeStamp() - st) / 1000.0)
 
 			registerRedrawViewsCallback cbDrawOpenEdges
 
 			delete obj
 			delete emesh
 			
 			gc light:true
 			
 			setArrowCursor()
 			
 		)
 		
 		forceCompleteRedraw()
 		
 	)
 
 	
 	try(destroyDialog RO_DISPLAY_UV_OE) catch()
 	rollout RO_DISPLAY_UV_OE "UV Open Edges" width:160 height:164
 	(
 		checkbutton bt_enable "Display UV Open Edges" pos:[8,16] width:144 height:32
 		dropDownList ddl_channel "UV Channel:" pos:[8,56] width:144 height:40 enabled:false
 		button bt_update "Update" pos:[8,128] width:144 height:28 enabled:false
 
 		fn destroy = (
 			callbacks.removeScripts #selectionSetChanged
 			unRegisterRedrawViewsCallback cbDrawOpenEdges
 			forceCompleteRedraw()
 		)
 		
 		on RO_DISPLAY_UV_OE close do destroy()
 		
 		on bt_enable changed arg do
 		(
 			bt_update.enabled = arg
 			ddl_channel.enabled = arg
 			destroy()
 			
 			if (arg == true) do (
 				callbacks.addscript #selectionSetChanged "cbSelectionChanged()"
 				cbSelectionChanged()
 			)
 		)
 		
 		on bt_update pressed do cbSelectionChanged()
 		
 		on ddl_channel selected arg do (
 			uvChannel = (ddl_channel.selected as integer)
 			cbSelectionChanged mForce:true
 		)
 
 	)
 
 	createDialog RO_DISPLAY_UV_OE
 	
 )
 

Have you looked into the XViewChecker Interface? It supports edge display and can have custom coded tools applied.

-Eric

Nicely done. That is a pretty nice script you have there Rodríguez

Here is an improved version that should work in Max 9+.

Finding the UV open Edges:
90,000 polygons 12,000 open edges around 3X faster
20,000 polygons 6,000 open edges around 2X faster

Displaying the edges is still slow, but although it is drawing 10 times more edges, I haven’t noticed any mayor drop in performance. The biggest impact is because it is drawing one set of edges at a time.

(
 
 	unRegisterRedrawViewsCallback cbDrawOpenEdges
 	
 	global RO_DISPLAY_UV_OE
 	global cbDrawOpenEdges
 	global cbSelectionChanged
 	
 	local vertexPos   = #()
 	local uvChannel   = 1
 	local edgesColor  = [0,255,0]
 	local edgeOffset  = 0.03
 	local forceRedraw = false
 
 	fn cbDrawOpenEdges = (
 		gw.setTransform (Matrix3 1)
 		gw.setColor #line edgesColor
 		for j in vertexPos do gw.polyLine j true
 
 		-- Needed in some Max versions or used dirvers
 		if forceRedraw do (
 			gw.enlargeUpdateRect #whole
 			gw.updateScreen()
 		)
 	)
 
 	fn cbSelectionChanged mForce:false = (
 
 		unRegisterRedrawViewsCallback cbDrawOpenEdges
 		
 		if ($ != undefined) do (
 			
 			setwaitcursor()
 
 			st = timeStamp()
 
 			obj = snapshotasmesh selection[1]
 
 			allChannels = for j = 1 to meshop.getNumMaps obj where (meshop.getMapSupport obj j) collect j
 			
 			RO_DISPLAY_UV_OE.ddl_channel.items = for j in allChannels collect j as string
 			
 			if (mForce == false) do (
 				uvChannel = allChannels[1]
 				RO_DISPLAY_UV_OE.ddl_channel.selection = 1
 			)
 
 			numTFaces = meshop.getNumMapFaces obj uvChannel
 			numTVerts = meshop.getNumMapVerts obj uvChannel
 			
 			facesTVertsIdx = for j = 1 to numTFaces collect (meshop.getMapFace obj uvChannel j)
 			
 			emesh = trimesh()
 			setMesh emesh numverts:numTVerts numfaces:numTFaces
 			setMesh emesh faces:facesTVertsIdx
 			
 			objOpenEdges = meshop.getOpenEdges obj
 			meshOpenEdges = (meshop.getOpenEdges emesh) - objOpenEdges
 
 			vertexPos = #()
 						
 			sharedFaces = meshop.getFacesUsingEdge emesh meshOpenEdges
 			foundEdges = #()
 			
 			for j in sharedFaces do (
 				
 				objFaceVerts = getFace obj j
 				
 				edge1 = j*3 - 2
 				edge2 = j*3 - 1
 				edge3 = j*3
 				
 				n1 = (getFaceNormal obj j) * edgeOffset
 
 				if (finditem meshOpenEdges edge1) > 0 do (
 					v1Idx = objFaceVerts.x
 					v2Idx = objFaceVerts.y
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 						append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 						append foundEdges [v2Idx, v1Idx]
 					)
 				)
 				if (finditem meshOpenEdges edge2) > 0 do (
 					v1Idx = objFaceVerts.y
 					v2Idx = objFaceVerts.z
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 						append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 						append foundEdges [v2Idx, v1Idx]
 					)
 				)
 				if (finditem meshOpenEdges edge3) > 0 do (
 					v1Idx = objFaceVerts.z
 					v2Idx = objFaceVerts.x
 					if (findItem foundEdges [v1Idx, v2Idx] == 0) do (
 						v1 = getVert obj v1Idx
 						v2 = getVert obj v2Idx
 						n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 						append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 						append foundEdges [v2Idx, v1Idx]
 					)
 				)
 					
 			)
 			
 			sharedFaces = meshop.getFacesUsingEdge obj objOpenEdges
 			
 			for j in sharedFaces do (
 				
 				objFaceVerts = getFace obj j
 				
 				edge1 = j*3 - 2
 				edge2 = j*3 - 1
 				edge3 = j*3
 				
 				n1 = (getFaceNormal obj j) * edgeOffset
 
 				if (finditem objOpenEdges edge1) > 0 do (
 					v1Idx = objFaceVerts.x
 					v2Idx = objFaceVerts.y
 					v1 = getVert obj v1Idx
 					v2 = getVert obj v2Idx
 					n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 					append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 				)
 				if (finditem objOpenEdges edge2) > 0 do (
 					v1Idx = objFaceVerts.y
 					v2Idx = objFaceVerts.z
 					v1 = getVert obj v1Idx
 					v2 = getVert obj v2Idx
 					n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 					append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 				)
 				if (finditem objOpenEdges edge3) > 0 do (
 					v1Idx = objFaceVerts.z
 					v2Idx = objFaceVerts.x
 					v1 = getVert obj v1Idx
 					v2 = getVert obj v2Idx
 					n3 = (normalize (cross n1 (v1-v2))) * edgeOffset
 					append vertexPos #(v1+n1+n3, v2+n1+n3, v1-n1-n3, v2-n1-n3, v1-n1+n3, v2-n1+n3, v1+n1-n3, v2+n1-n3)
 				)
 					
 			)
 
 			format "Found %	UV Open Edges in %s
" vertexPos.count ((timeStamp() - st) / 1000.0)
 
 			registerRedrawViewsCallback cbDrawOpenEdges
 
 			delete obj
 			delete emesh
 			
 			gc light:true
 			
 			setArrowCursor()
 			
 		)
 		
 		forceCompleteRedraw()
 		
 	)
 
 	
 	try(destroyDialog RO_DISPLAY_UV_OE) catch()
 	rollout RO_DISPLAY_UV_OE "UV Open Edges" width:160 height:198
 	(
 		checkbutton bt_enable "Display UV Open Edges" pos:[8,8] width:144 height:32
 		dropdownList ddl_channel "UV Channel:" pos:[8,72] width:120 height:40 enabled:false
 		colorPicker cp1 "" pos:[131,90] width:21 height:21 enabled:true color:edgesColor modal:false
 		checkbox chk_redraw "Force Redraw" pos:[8,46] width:100 height:16 enabled:false
 		spinner spn_width "Edge Width:" pos:[8,120] width:120 height:16 range:[1,100,4] type:#integer fieldwidth:50
 		button bt_update "Update" pos:[8,160] width:144 height:28 enabled:false
 
 		fn destroy = (
 			callbacks.removeScripts #selectionSetChanged
 			unRegisterRedrawViewsCallback cbDrawOpenEdges
 			forceCompleteRedraw()
 		)
 		
 		on RO_DISPLAY_UV_OE close do destroy()
 		
 		on bt_enable changed arg do
 		(
 			bt_update.enabled = arg
 			ddl_channel.enabled = arg
 			chk_redraw.enabled = arg
 			destroy()
 			
 			if (arg == true) do (
 				callbacks.addscript #selectionSetChanged "cbSelectionChanged()"
 				cbSelectionChanged()
 			)
 		)
 		
 		on bt_update pressed do cbSelectionChanged()
 		
 		on ddl_channel selected arg do (
 			uvChannel = (ddl_channel.selected as integer)
 			cbSelectionChanged mForce:true
 		)
 		
 		on cp1 changed arg do edgesColor = arg
 			
 		on spn_width changed arg do edgeOffset = (arg-1)/100.0
 		
 		on chk_redraw changed arg do forceRedraw = arg
 
 	)
 
 	createDialog RO_DISPLAY_UV_OE
 	
 )