Improve UVs. Improve texture. Restore glow to texture.

CHANGELOG.md

@@ -4,6 +4,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a
 Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## [git] - 2020-02-12
+### Changed
+- The UVs for the entire fabric part and inside are now, where
+  applicable, square and aligned with pixels (as if the bag is made of a
+  single piece of fabric).
+  - The left side is aligned with the right side so that making or using
+    an existing rectangular seamless texture is now possible (see
+    "Re-texturing" in README.md)
+
 ## [git] - 2020-02-10
 ### Added
 - Low-poly version: "prestibags_bag.blend"

README.md

@@ -11,6 +11,58 @@ interfere with any mods that do.
 - The model is much lighter, without sacrificing significant details.
 - The license is viable (see "License" below).
 
+### Re-texturing
+The following assume a 256x256 texture resolution (the locations under
+"UV Map details" do not). Also, to avoid texture edge artifacts, the UV
+map is actually 2px shy of the outline of the texture (4px total on each
+dimension), so expect up to 2px of the textures below to be cropped if
+they touch the edge. There will also be warping due to the bag shape,
+but due to the improved UV map, large text or decals will still be
+legible.
+- To add a decal, the following location will place it on the "front"
+  (The side seen upon placing the bag; The height can be anything, but y
+  may have to be adjusted for different heights):
+  - `[combine:112x112:40,112=texture.png]`
+- To replace the entire "fabric" of the bag (including visible inner
+  part of top):
+  - `[combine:224x224:0,32=texture.png]`
+- To replace the entire "outside" of the bag (not visible inner part of
+  top) like in a "full-bleed" wrap-around print on an IRL bag:
+  - `[combine:224x192:0,64=texture.png]`
+- None of the above replace the "contents" of the bag. To replace that
+  part:
+  - `[combine:248x64:0,0=texture.png]`
+- To replace the entire rectangle that makes up the texture, including
+  the contents and only excluding the rope, you can use
+  any 224x256 image and place it at 0,0.
+  - `[combine:224x256:0,0=texture.png]`
+
+#### UV Map details
+- If you want a decal on the same side of the bag as the rope's ends,
+  place it on the first 7/16ths of the image. However, since the rope
+  is on the left when placed, a decal should probably be about 1/2 of
+  the image width and centered at 7/16ths.
+- The left 7/8ths of the image is the bag.
+   - The top 1/8th of the image is the contents of the bag.
+   - The next 1/8th is the inside of the top part of the bag.
+   - The other 6/8ths are the outside of the bag.
+     - Including a bottom margin of 1/64.
+- The left edge of the region and right edge (at 7/8ths of width) are
+  "sewn" together to make the "seam" of the bag.
+- Halfway between 0 and 7/8ths (which is 7/16ths) is the "fold"
+  of the bag (At this division, the left part of the bottom is "sewn"
+  to the right part of the bottom).
+- Rope:
+   - The right 1/8th of the image is the rope, including a margin of 1/64.
+     However, since the rope is a separate manifold object in the mesh
+     file, the rope can be anywhere on the 3D model and be posed without
+     negative effects.
+     - The rope is currently over the left part of the bag relative to
+       the halves described above, but this can be changed in future
+       revisions.
+- The specifications above should remain the same for any future
+  revisions of the UV map in the 3d model files.
+
 ## Main Features
 - Retain their inventory when picked up or unloaded/reloaded by the
   server.