Mirrored geometry+Normal map/Texture?

polycounter lvl 7
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ENODMI polycounter lvl 7
Ok, so Im building a small robot, Ive modeled half of it and mirrored the other half, Im using the normals i captured from the original by keeping my the uvs of the mirrored geometry the same. I have pulled some of the mirrored pieces uvs into their own unique space on the map and used photoshop to copy over the normals from the original. Now the problem i have is that i will be adding txt for the mirrored unique pieces and as a result ill have to type the words backwards...no big deal, but i'd rather be able to have it not reversed. So i flipped just the uvs i needed to do the txt on.. anyways, the texturing problem is fixed, but the normal maps look strange. do i need to reverse a channel on the normals? I tried flipping the red because i mirrored the pieces on the x axis..and it looks like crap. Any ideas? Do i need to post some picts to help explain?

Replies

  • danimal
    Try a decal. Float a plane where you want the text and use alpha to blend it with the bg. This way you can flip the plane if the text is backwards and still mirror everything else.

    Reversing a channel in your normal map would not work.
  • PredatorGSR
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    PredatorGSR polycounter lvl 7
    Yea, best method is usually to use an alpha card overlay for text. Another method is that if the text is on a flat surface, you can cut in edges around the text area, and flip the uvs of only that small cut out section, so that the text isn't mirrored, but everything else is. It only works if the text area is flat and matches up pretty well though.
  • ENODMI
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    ENODMI polycounter lvl 7
    Thanks guys, think im going to give the floating alpha plane a try since the area im working with is flat. I have another area that isnt flat, so i guess ill just work it mirrored
  • EarthQuake
    You mirrored the normals, but then unwrapped it uniquely, and copied the normals over? I'm really confused as to what you're actually doing here. Some images would help.
  • perna
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    perna polycounter
    eq, don't be daft. He modeled half of it and mirrored the other half and kept the uvsof the mirrored geometry the same using the normals from the original then pulled some of the mirrored pieces uvs into their own unique space on the map and used photoshop to copy over the normals from the original then he flipped just the uvs he needed to do the txt on then tried flipping the red because he mirrored the pieces on the x axis.

    enodmi: I suggest you flip the green of the inverted geometry before you mirrored the original uvs of the normals and put the pieces of unique maps into photoshop then copy over both channels, but not the flipped and then reverse both direction maps on the texturing.
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