private Mesh SpriteToMesh(SpriteRenderer spriteRenderer)
{
var sprite = spriteRenderer.sprite;
Mesh result = new Mesh();
result.hideFlags = HideFlags.HideAndDontSave;
result.Clear();
//verts
var verts = SpriteUtility.GetSpriteMesh(sprite, false);
var verts3d = new Vector3[verts.Length];
for (int i = 0; i < verts.Length; i++)
{
verts3d [i] = verts [i];
}
result.vertices = verts3d;
// uvs
result.uv = SpriteUtility.GetSpriteUVs(sprite, false);
// colors and normals
var colors = new Color[result.vertices.Length];
var normals = new Vector3[result.vertices.Length];
for (int i = 0; i < colors.Length; i++)
{
colors [i] = spriteRenderer.color;
normals [i] = Vector3.back;
}
result.colors = colors;
result.normals = normals;
// indicies
var indicies2d = SpriteUtility.GetSpriteIndices(sprite, false);
var indicies = new int[indicies2d.Length];
for (int i = 0; i < indicies.Length; i++)
{
indicies [i] = indicies2d [i];
}
// finish it up
result.SetIndices(indicies, MeshTopology.Triangles, 0);
return(result);
}
public static Mesh CreateSpriteMesh(Transform owner, Sprite sprite)
{
if (owner != null && sprite != null)
{
// Unparent the skin temporarily before adding the mesh
Transform parent = owner.parent;
owner.parent = null;
// Reset the rotation before creating the mesh so the UV's will align properly
Quaternion localRotation = owner.localRotation;
owner.localRotation = Quaternion.identity;
// Reset the scale before creating the mesh so the UV's will align properly
Vector3 localScale = owner.localScale;
owner.localScale = Vector3.one;
Vector2[] vertices2D = SpriteUtility.GetSpriteMesh(sprite, false);
int[] indices = SpriteUtility.GetSpriteIndices(sprite, false).Select(element => (int)element).ToArray();
// Create the Vector3 vertices
Vector3[] vertices = new Vector3[vertices2D.Length];
for (int i = 0; i < vertices.Length; i++)
{
vertices[i] = new Vector3(vertices2D[i].x, vertices2D[i].y, 0);
}
Mesh mesh = new Mesh();
mesh.vertices = vertices;
mesh.triangles = indices;
Vector2[] uvs = SpriteUtility.GetSpriteUVs(sprite, false);
mesh.uv = uvs;
mesh.RecalculateNormals();
mesh.RecalculateBounds();
// Reset the rotations of the object
owner.localRotation = localRotation;
owner.localScale = localScale;
owner.parent = parent;
return(mesh);
}
return(null);
}
