{"id":4793,"date":"2010-08-28T07:00:25","date_gmt":"2010-08-28T05:00:25","guid":{"rendered":"http:\/\/4eyes.code66.se\/?p=4793"},"modified":"2010-08-23T22:22:58","modified_gmt":"2010-08-23T20:22:58","slug":"cor-ten-195-a-texture-remake","status":"publish","type":"post","link":"http:\/\/4eyes.code66.se\/?p=4793","title":{"rendered":"Cor-Ten 195 – a texture remake"},"content":{"rendered":"

Today we are gonna make an iron texture that I found a long time ago in a galaxy far far away<\/em>, sorry, on this website<\/a>, when I was just a young padwan in mapmaking.<\/p>\n

The texture is named Cor-Ten195, and looks like this<\/p>\n

\"\"<\/a><\/p>\n

It is a little dark, but works beautifully on metal objects like handles, nails. I’e used it many times in the past, but never really taken the time to create my own version, so here we go, a full day of FilterForge<\/a> up ahead.<\/p>\n

We start with creating a new filter, and as I first want to make a proof of concept filter, I wont make any user adjustable options to begin with, those are added afterwards, when, and if, I know the basic idea will work.<\/p>\n

\"\"<\/a><\/p>\n

First we create a Perlin Nois<\/strong>e, and set the Noise<\/em> and Background<\/em> to rather similar colors, almost black and darker grey. We set an over medium Roughness<\/em> and only a little Contrast<\/em> to it. The Size<\/em> is set to just 3, making the noise very small and fine grained. We also pull down Details to about 50, as we will not need more.<\/p>\n

\"\"<\/a><\/p>\n

The Perlin Noise<\/strong> component, hereby called the surface<\/em>.<\/p>\n

\"\"<\/a><\/p>\n

Now, for height map, we use another Perlin Noise<\/strong>, with Noise<\/em> and Background<\/em> set to about 50% grey with only a little difference. \u00a0We set no Roughness<\/em> but a little Contrast<\/em> to it, and we have some Scale Stretch<\/em>, and also an Angle<\/em>. This will result in wave lines diagonally across the image.<\/p>\n

\"\"<\/a><\/p>\n

This is the second Perlin Noise<\/strong>, hereby called the height map<\/em>.<\/p>\n

\"\"<\/a><\/p>\n

Now,we create two Noise Distortions hat we chain together, and feed the first one with the output from the height map<\/em>.<\/p>\n

\"\"<\/a><\/p>\n

Both the Noise Distortions<\/strong> are configured about the same, with small differences. The second has a different Variation<\/em> setting, and a different Angle<\/em>. This will make the wave ripples from the height map<\/em> to be curly and wiggle instead of being just straight lines.<\/p>\n

So far, we have a surface (color) and a basic height map, but the thing that makes this texture unique are all the small craters in it, corrosion.<\/p>\n

\"\"<\/a><\/p>\n

We create an Elipse<\/strong>, and set the Radius<\/em> to about 25 and the Bevel Width<\/em> to 100. Then we hook up a Circular Arc<\/strong> to the Bevel<\/em> input. This is our Bomber Particle<\/em> for this.<\/p>\n

\"\"<\/a><\/p>\n

Now we add the Bomber<\/strong>, or particle engine, and feel the wiggly height map<\/em> as its background, and the Bomber Particle<\/em> as particle one.<\/p>\n

\"\"<\/a><\/p>\n

We set the Result<\/strong> component to be of Surface<\/em> type, and hook the Bomber<\/strong> output to the Height<\/em>, and the surface<\/em> to Surface Color<\/em>. I also attached Slider<\/strong> controls for Reflectivity<\/em>, Reflection Blur <\/em>and Metallic<\/em>.<\/p>\n

And guess what, it worked! Now when the proof of concept is tested, we can add some manual setting to the filter.<\/p>\n

\"\"<\/a><\/p>\n

First, we design a color selector based on the chosen base colors we had. We use static configured Blend<\/strong> components just to feed the colors into the next component, a Hue \/ Saturation<\/strong> modifier.<\/p>\n

We hook up two Slider<\/strong> controllers and an Angle<\/strong> controller for controlling those values, Hue, Saturation, Lightness<\/em>. This will work nicely.<\/p>\n

\"\"<\/a><\/p>\n

Second, I found out that the reflection should be a little higher in the craters (to get the Cor-Ten 195 look of it. So I tap the transparent Bomber<\/strong> output (blending the result onto the height map instead of having the height map as a background<\/em>), then use a Blend<\/strong> to put those dots onto white background. Then I use a Threshold<\/strong> component to give the crater dots just a little lighter shade. I then pass that to another Blend<\/strong> component, where I let the Reflectivity<\/em> slider set the Opacity<\/em> against a black background.<\/p>\n

Are you ready?<\/p>\n

\"\"<\/a><\/p>\n

I think I nailed it pretty well, and the upside now is that I can make many different types of rusted or non rusted iron textures, with different reflectivity.<\/p>\n","protected":false},"excerpt":{"rendered":"

Today we are gonna make an iron texture that I found a long time ago in a galaxy far far away, sorry, on this website, when I was just a young padwan in mapmaking.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,8],"tags":[13],"class_list":["post-4793","post","type-post","status-publish","format-standard","hentry","category-mapmaking","category-tools-of-the-trade","tag-filterforge"],"_links":{"self":[{"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/posts\/4793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4793"}],"version-history":[{"count":3,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/posts\/4793\/revisions"}],"predecessor-version":[{"id":4809,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=\/wp\/v2\/posts\/4793\/revisions\/4809"}],"wp:attachment":[{"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4793"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4eyes.code66.se\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}