public override void OnImportAsset(AssetImportContext ctx)
{
// Attempt to generate models for each frame
string expectedImage = Path.Combine(Path.GetDirectoryName(ctx.assetPath), Path.GetFileNameWithoutExtension(ctx.assetPath));
Texture2D sourceTexture = AssetDatabase.LoadAssetAtPath <Texture2D>(expectedImage);
if (sourceTexture == null)
{
ctx.LogImportError($"Failed to load associated texture at '{expectedImage}'");
return;
}
ctx.DependsOnSourceAsset(expectedImage);
IVoxelVolume textureVolume = new Texture2DVoxelVolume(sourceTexture);
// Layers will be stacked next to each other progressing
int layerCount = m_ImportSettings.GetTotalChannelCountRounded(4) / 4;
Vector3Int cellSize, frameStep, channelStep;
if (m_ImportFrameOrientation == LayoutOrientation.Vertical)
{
cellSize = new Vector3Int();
cellSize.x = sourceTexture.width / layerCount;
cellSize.y = sourceTexture.height / m_ImportSettings.FrameCount;
frameStep = new Vector3Int(0, cellSize.y, 0);
channelStep = new Vector3Int(cellSize.x, 0, 0);
}
else
{
cellSize = new Vector3Int();
cellSize.x = sourceTexture.width / m_ImportSettings.FrameCount;
cellSize.y = sourceTexture.height / layerCount;
frameStep = new Vector3Int(cellSize.x, 0, 0);
channelStep = new Vector3Int(0, cellSize.y, 0);
}
CommonVoxelImporter importer = new CommonVoxelImporter(textureVolume, m_ImportSettings, cellSize, frameStep, channelStep);
MeshSheet meshSheet = importer.GenerateMeshSheet();
ctx.AddObjectToAsset("Meshes", meshSheet);
for (int i = 0; i < meshSheet.FrameCount; ++i)
{
Mesh mesh = meshSheet.GetMeshAtFrame(i);
mesh.name = Path.GetFileNameWithoutExtension(ctx.assetPath) + "_MeshFrame_" + i;
ctx.AddObjectToAsset("MeshFrame_" + i, mesh);
}
ctx.SetMainObject(meshSheet);
}
public MeshSheet GenerateMeshSheet()
{
MeshSheetFrame[] frames = new MeshSheetFrame[m_Settings.FrameCount];
for (int i = 0; i < frames.Length; ++i)
{
int f = i;
if (m_Settings.FlipFrameDirection)
{
f = frames.Length - i - 1;
}
frames[f] = GenerateFrame(i);
}
MeshSheet sheet = MeshSheet.CreateNew(frames);
sheet.PlayMode = m_Settings.PlaybackMode;
return(sheet);
}
