https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243819#M25638 I think this situation is not that simple. There are multiple things in play here: <BR /> 1. Cut lines<BR /> 2. Uncut lines<BR /> 3. Fills of cut surfaces<BR /> 4. Fills of uncut surfaces<BR /> 5. Vectorial hatches on uncut surfaces<BR /> 6. Hidden lines<BR /> <BR /> Currently, hidden lines are drawn in front of all other lines and fills.<BR /> If hidden lines were drawn behind all these, then hidden lines would not be visible behind any fills.<BR /> <BR /> I think the way this should work best is hidden lines should be in front of all fills, but behind all other lines. I think this would be a more complex thing to achieve technologically, because you would have to separate the drawing of fills and lines (or maybe it is relatively simple, I am just guessing).<BR /> <BR /> So I would say this is more a feature than a bug, but a feature that could be implemented more intelligently.<BR /> So I will forward this to GRAPHISOFT as a wish. Sun, 12 Nov 2017 16:56:52 GMT Laszlo Nagy 2017-11-12T16:56:52Z https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243818#M25637 <DIV class="actalk-migrated-content"><T>I noted that the hidden lines in 3D document are displayed above the projection lines as shown in the attached picture.<BR /> I think they should be displayed below the projection lines.</T></DIV><BR /><IMG src="https://community.graphisoft.com/t5/image/serverpage/image-id/6434i31F71836431C39A3/image-size/large?v=v2&amp;px=999" border="0" alt="Cattura 7.PNG" title="Cattura 7.PNG" /> Tue, 07 Nov 2017 18:35:21 GMT https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243818#M25637 alemanda 2017-11-07T18:35:21Z https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243819#M25638 I think this situation is not that simple. There are multiple things in play here: <BR /> 1. Cut lines<BR /> 2. Uncut lines<BR /> 3. Fills of cut surfaces<BR /> 4. Fills of uncut surfaces<BR /> 5. Vectorial hatches on uncut surfaces<BR /> 6. Hidden lines<BR /> <BR /> Currently, hidden lines are drawn in front of all other lines and fills.<BR /> If hidden lines were drawn behind all these, then hidden lines would not be visible behind any fills.<BR /> <BR /> I think the way this should work best is hidden lines should be in front of all fills, but behind all other lines. I think this would be a more complex thing to achieve technologically, because you would have to separate the drawing of fills and lines (or maybe it is relatively simple, I am just guessing).<BR /> <BR /> So I would say this is more a feature than a bug, but a feature that could be implemented more intelligently.<BR /> So I will forward this to GRAPHISOFT as a wish. Sun, 12 Nov 2017 16:56:52 GMT https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243819#M25638 Laszlo Nagy 2017-11-12T16:56:52Z https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243820#M25639 Saying that in programming way... it might be<BR /> If fills are off then draw hidden lines first.<BR /> <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_biggrin.gif" style="display : inline;" /> Sun, 12 Nov 2017 17:05:18 GMT https://community.graphisoft.com/t5/Installation-update/AC21-Hidden-lines-in-3D-Document/m-p/243820#M25639 alemanda 2017-11-12T17:05:18Z