static void GenerateOutline(SpriteCache sprite, ITextureDataProvider textureDataProvider,
out List <Vertex2D> vertices, out List <int> indices, out List <Edge> edges)
{
if (textureDataProvider == null ||
textureDataProvider.texture == null)
{
vertices = new List <Vertex2D>();
indices = new List <int>();
edges = new List <Edge>();
return;
}
const float detail = 0.05f;
const byte alphaTolerance = 200;
var smd = new SpriteMeshData
{
spriteID = new GUID(sprite.id),
frame = sprite.textureRect,
pivot = sprite.pivotNormalized
};
var meshDataController = new SpriteMeshDataController
{
spriteMeshData = smd
};
meshDataController.OutlineFromAlpha(new OutlineGenerator(), textureDataProvider, detail, alphaTolerance);
meshDataController.Triangulate(new Triangulator());
vertices = smd.vertices;
indices = smd.indices;
edges = smd.edges;
}
private void GenerateGeometry(SpriteCache sprite, float outlineDetail, byte alphaTolerance, float subdivide)
{
Debug.Assert(sprite != null);
var mesh = sprite.GetMesh();
Debug.Assert(mesh != null);
m_SpriteMeshDataController.spriteMeshData = mesh;
m_SpriteMeshDataController.OutlineFromAlpha(m_OutlineGenerator, mesh.textureDataProvider, outlineDetail, alphaTolerance);
m_SpriteMeshDataController.Triangulate(m_Triangulator);
if (subdivide > 0f)
{
var largestAreaFactor = subdivide != 0 ? Mathf.Lerp(0.5f, 0.05f, Math.Min(subdivide, 100f) / 100f) : subdivide;
m_SpriteMeshDataController.Subdivide(m_Triangulator, largestAreaFactor, 0f);
}
}
