topic Re: Road texture mapping in Modeling

Road texture mapping

Ahmed_K — Fri, 11 Dec 2015 14:18:31 GMT

I have to map a curved road with a road texture, the mapping works perfectly with straight roads , ut i can't bend the map to follow the curve of the road , archicad any help Guys !! thanks
i'll use the texture shown below

Re: Road texture mapping

Ahmed_K — Fri, 11 Dec 2015 14:34:22 GMT

road texture

Re: Road texture mapping

Barry Kelly — Sun, 13 Dec 2015 02:13:50 GMT

Is the road an object in which you can give it a radius?
If so you may have an option in GDL (COOR) than may help to map the texture correctly (can't be more specific as I don't have Archicad with me at the moment).

If it is just a slab or mesh then I can't think of a way other than creating a custom texture that fits the curve perfectly.

Barry.

Re: Road texture mapping

Ahmed_K — Sun, 13 Dec 2015 17:55:48 GMT

thank you!
the road is created with mesh tool it's not an object coz it has an irregular shape, i'll try to use objects in order to apply that (coor) command in gdl ( i don't even know how to use it 😛 but i'll searsh for some tutorils)

maybe GRAPHISOFT should think about a mapping tool for archicad so we can create a fully textured model . this will make our work more easier and comfortable.

Re: Road texture mapping

Steve Jepson — Sun, 13 Dec 2015 21:54:12 GMT

Model the paint.

Re: Road texture mapping

Ahmed_K — Tue, 15 Dec 2015 13:30:37 GMT

I created customized textures, but results are not encouraging as my texture doesn't fit correctly event when I care about measurements,
I used complex profiles and slabs to show details of my road. I don't know anything about GDL unfortunately.
Also, I can't model 20 different surfaces for each road type ( every new surface depends on the road width, curve angle...)
why bended textures doesn't work for construction elements ( it works only with GDL objects and need a special scripting) is this limitation due to the GDL language or to be mapping method, can this be corrected by a new plugin which present a multitude of mapping option ( like the UV mapper in 3ds Max) ??
Thanks

Re: Road texture mapping

Barry Kelly — Tue, 15 Dec 2015 14:12:46 GMT

I think what Steve was implying is to model the paint lines with walls or slabs.
Easy if your road mesh is flat - just make the wall or slab a millimetre high and place it on the road.
But if your road is an undulating mesh then add walls (or slabs) that are higher.
Duplicate the mesh and drag the duplicate 1mm higher.
Give the mesh a negative height so the sides (skirt) goes up instead of down.
It will basically invert your mesh.

Use Solid Element Operation to subtract the inverted mesh from the walls (with upwards extrusion if necessary if the mesh is not higher than the walls).

Barry.

Re: Road texture mapping

Barry Kelly — Tue, 15 Dec 2015 14:16:20 GMT

And the results.

Barry.

Re: Road texture mapping

Ahmed_K — Tue, 15 Dec 2015 14:59:26 GMT

Thank you that was helpful !!

Re: Road texture mapping

TMA_80 — Tue, 15 Dec 2015 17:01:20 GMT

You could also help with this poll :

http://archicad-talk.graphisoft.com/viewtopic.php?p=205436&highlight=uvmapping#205436

I must say that GS has made a great job with the c4d integration, but if there is something missing, it is certainly the uvmapping ( the "align 3d texture" needs graphical , and more control enhancements )

Re: Road texture mapping

Ahmed_K — Tue, 15 Dec 2015 19:30:34 GMT

uv mapping is essential for any software, it's a BASIC tool, it's strange to not being added after 19 versions of archicad.

Re: Road texture mapping

fuzzytnth3 — Thu, 17 Dec 2015 14:36:17 GMT

I like the negative skirt trick, nice one

Barry wrote:
Duplicate the mesh and drag the duplicate 1mm higher.
Give the mesh a negative height so the sides (skirt) goes up instead of down.
It will basically invert your mesh.

Use Solid Element Operation to subtract the inverted mesh from the walls (with upwards extrusion if necessary if the mesh is not higher than the walls).

Barry.

Re: Road texture mapping

David Maudlin — Fri, 18 Dec 2015 13:48:11 GMT

You don't need to duplicate the Mesh (negative skirt). The same result can be obtained by using two SEO operations on the same elements:
1. Select the Line elements (Walls/Slabs) and set them as Targets, select the Road element (Mesh) and set it as Operator, set Operation to Intersection, Execute. The Line elements are cut to the Road.
2. Select the Road element (Mesh) and set as Target, select the Line elements (Walls/Slabs) and set as Operator, set Operation to Subtraction, Execute. The Road (mesh) has now been removed where the Line elements are, so they are visible and in the same surface planes as the Road. The Line elements will now automatically follow any changes made to the Road (Mesh).

David