Unwrap Tool
Use this tool to (re)compute unwrap of your model before texturing. You may also find it useful when you want to estimate minimal reasonable resolution, once you have a model calculated.
- Optimal texel size Size of a texel in 3D corresponding to the minimal detail captured by images.
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Gutter Represents number of pixels of a chart border in a texture image.
Gutter is important for avoiding visible artefacts on a model during rendering. Many rendering engines use techniques like mip-mapping, where the texture is downscaled several times to create an image pyramid.
If the engine renders texture from higher pyramid levels, then a color from one chart can bleed to another chart in the interpolation process. This can happen just in case you do not have
gutter between the charts large enough. The default value 2 is enough to avoid this type of artefact in most rendering engines.
- Minimal texture resolution Set the minimal resolution a texture can be. You can choose from 512x512, 1024x1024, 2048x2048, 4096x4096, 8192x8192 and 16384x16384.
- Maximal texture resolution Set the maximal resolution a texture can be. You can choose from 512x512, 1024x1024, 2048x2048, 4096x4096, 8192x8192 and 16384x16384.
- Large triangle removal threshold Let us assume that you select 10. Then, in case that a triangle's edge is 10 times longer than the average edge length of all edges of a model, the system will unwrap it so that the triangle is mapped to just 1 texel.
- Style Defines a strategy which will be used to build a UV map. Check more about the unwrap styles here