Material "shining thorugh" in wall panel

[Anonymous]

Hi all!

I have a question regarding materials in GDL.

I made a custom wall panel for a curtain wall, in which I am using my own, custom defined material to be placed on top of a mineral wool panel.

The sheet is 1 mm thick an is now floating in front of the panel at a distance of 1 mm. To my opinion I set the material to be solid.

Please help me see where I went wrong!

Code for the material:

define material "rr29" 0,  
	 0.625,0.0390625,0.01953125,
	! surface RGB [0.0 .. 1.0] 
	   1, 0.5, 0.02, 0,
	! ambient, diffuse, specular,transparent 
	 50,
	! shining [0.0 .. 100.0] 
		4,
	! transparency attenuation [0.0 .. 4.0] 
	0, 0,0,
	! specular RGB [0.0 .. 1.0]
	0, 0, 0,
	! emission RGB [0.0 .. 1.0]
	0

Code for the panel: (profile is the mineral wool panel and it is covered on both sides by apparently semi-translucent panels.)

!profile
	cprism_ side_mat,side_mat,side_mat,29,zzyzx,
		0.001,0.0176,15,
		0.0102,0.0176,15,
		0.0114,0.006,15,
		B/2-0.031,0.006,15,
		B/2-0.029,0,15,
		B/2-0.020,0,15,
		B/2-0.012,0.016,15,
		B/2+0.012,0.016,15,
		B/2+0.020,0,15,
		B/2+0.029,0,15,
		B/2+0.031,0.006,15,
		B-0.0114,0.006,15,
		B-0.0102,0.0176,15,	
		B-0.001,0.0176,15,
		B-0.001,A,15,
		B-0.005,A,15,
		B-0.005,A+0.006,15,
		B/2+0.031,A+0.006,15,
		B/2+0.029,A+0.006,15,
		B/2+0.020,A+0.006,15,
		B/2+0.012,A+0.016,15,
		B/2-0.012,A+0.016,15,
		B/2-0.020,A+0.006,15,
		B/2-0.029,A+0.006,15,
		B/2-0.031,A+0.006,15,
		0.006,A+0.006,15,
		0.006,A,15,
		0.001,A,15,
		0.001,0.0176,15	

!colors inside panel
	cprism_ internalfacingcolorvalue, internalfacingcolorvalue, internalfacingcolorvalue, 5, zzyzx,
		0,0,15,
		0,A,15,
		0.001,A,15,
		0.001,0,15,
		0,0,15

!color outside panel
	cprism_ externalfacingcolorvalue, externalfacingcolorvalue, externalfacingcolorvalue, 5, zzyzx,
		B,0,15,
		B,A,15,
		B-0.001,A,15,
		B-0.001,0,15,
		B,0,15

endif

Much appreciated if someone could show me what to do to make the side panels solid looking!

Could it also be that due to the fact that they are so thin (1mm) they wool shows through, even though the material is solid?

[Anonymous]

I’m pretty sure it is because panel is only 1mm thick that the insulation is grinning through, can you increase the thickness of the covering material? Or. If you are concerned about quantity for measurement I would introduce a small air gap between the insulation and the panel, this would mimic the adhesive layer that would be there in reality.
Scott

[Anonymous]

Thanks!

This seems to have done the trick!

[Anonymous]

This actually didn't do the trick .

I added a 1 mm air gap to no effect.

Any other ideas on how to prevent the material from shining through? Very annoying as it happens only under certain angles and once zoomed in to a certain level.

!colors inside panel
cprism_ internalfacingcolorvalue, internalfacingcolorvalue, internalfacingcolorvalue, 5, zzyzx,
0,0,15,
0,A,15,
0.01,A,15,
0.01,0,15,
0,0,15

!color outside panel
cprism_ externalfacingcolorvalue, externalfacingcolorvalue, externalfacingcolorvalue, 5, zzyzx,
B,0,15,
B,A,15,
B-0.001,A,15,
B-0.001,0,15,
B,0,15

cprism_ side_mat, side_mat, side_mat, 5, zzyzx,
0.002,0,15,
B-0.002,0,15,
B-0.002,A,15,
0.002,A,15,
0.002,0,15

[Anonymous]

Edit: seems to work in more recent ArchiCad versions (19+) so not an issue at the moment

Phieuw!

[Bruce]

The screenshot you attached looks like it’s taken straight from the 3D window. Thin / close materials will always show through in this situation. Does it still show through in a render, 3D document, or coloured elevation?

[Anonymous]

Hi Bruce.

Luckily it doesnt.

I was just wonderin if there was anything I could do about it as for a designer/architect it could be annoying to work with.

[Bruce]

Not that I know of. This isn't an ARCHICAD-specific thing though, nor is it a bug. Many 3D programs will 'show' geometry through surfaces that are very close to each other in the modelling window. They will clean up for output views though.

[runxel]

Bruce wrote:
Not that I know of. This isn't an ARCHICAD-specific thing though, nor is it a bug. Many 3D programs will 'show' geometry through surfaces that are very close to each other in the modelling window. They will clean up for output views though.

Thats the point. I assume the z-buffer is not that precise in the 3d window, because it does not need to be.
With the obligatory rounding errors you'll get this look in this case sometimes.