protected virtual void buildUvs(UVChannelFlags channel)
{
using (new ProfilerSample("Build Uvs"))
{
var uvs = MeshCache.GetUvs(_generation.graphic.mesh, channel);
var targetList = _generation.uvs[channel.Index()];
targetList.AddRange(uvs);
//If we cannot remap this channel, just return
if ((_generation.graphic.remappableChannels & channel) == 0)
{
return;
}
UnityEngine.Object key;
if (_textureFeatures.Count > 0)
{
key = _textureFeatures[0].featureData[_generation.graphicIndex].texture;
}
else if (_spriteFeatures.Count > 0)
{
key = _spriteFeatures[0].featureData[_generation.graphicIndex].sprite;
}
else
{
return;
}
Rect rect = _atlasUvs.GetRect(channel.Index(), key);
MeshUtil.RemapUvs(targetList, rect, uvs.Count);
}
}
private void doPerChannelPack(ProgressBar progress, UVChannelFlags channel, Texture2D[] packedTextures, AtlasUvs channelMapping)
{
var mainTextureFeature = _features.Query().FirstOrDefault(f => f.channel == channel);
if (mainTextureFeature == null)
{
return;
}
Texture2D defaultTexture, packedTexture;
Texture2D[] rawTextureArray, processedTextureArray;
progress.Step("Prepare " + channel);
prepareForPacking(mainTextureFeature, out defaultTexture,
out packedTexture,
out rawTextureArray,
out processedTextureArray);
progress.Step("Pack " + channel);
var packedRects = packedTexture.PackTextures(processedTextureArray,
_padding,
_maxAtlasSize,
makeNoLongerReadable: false);
packedTexture.Apply(updateMipmaps: true, makeNoLongerReadable: true);
packedTextures[_features.IndexOf(mainTextureFeature)] = packedTexture;
packSecondaryTextures(progress, channel, mainTextureFeature, packedTexture, packedRects, packedTextures);
//Correct uvs to account for the added border
for (int i = 0; i < packedRects.Length; i++)
{
float dx = 1.0f / packedTexture.width;
float dy = 1.0f / packedTexture.height;
Rect r = packedRects[i];
if (processedTextureArray[i] != defaultTexture)
{
dx *= _border;
dy *= _border;
}
r.x += dx;
r.y += dy;
r.width -= dx * 2;
r.height -= dy * 2;
packedRects[i] = r;
}
for (int i = 0; i < rawTextureArray.Length; i++)
{
channelMapping.SetRect(channel.Index(), rawTextureArray[i], packedRects[i]);
}
}
public static List <Vector4> GetUvs(Mesh mesh, UVChannelFlags channel)
{
var key = new UvKey()
{
mesh = mesh, channel = (int)channel
};
List <Vector4> uvs;
if (!_uvCache.TryGetValue(key, out uvs))
{
uvs = new List <Vector4>();
mesh.GetUVs(channel.Index(), uvs);
if (uvs.Count != mesh.vertexCount)
{
uvs.Fill(mesh.vertexCount, Vector4.zero);
}
_uvCache[key] = uvs;
}
return(uvs);
}
