void OnPreprocessTexture()
{
if (!s_Initialized)
{
return;
}
string guid = AssetDatabase.AssetPathToGUID(assetPath);
if (s_SpriteMeshToTextureCache.ContainsValue(guid))
{
TextureImporter textureImporter = (TextureImporter)assetImporter;
SerializedObject textureImporterSO = new SerializedObject(textureImporter);
SerializedProperty textureImporterSprites = textureImporterSO.FindProperty("m_SpriteSheet.m_Sprites");
foreach (KeyValuePair <string, string> pair in s_SpriteMeshToTextureCache)
{
if (pair.Value == guid)
{
SpriteMesh spriteMesh = LoadSpriteMesh(AssetDatabase.GUIDToAssetPath(pair.Key));
SpriteMeshData spriteMeshData = SpriteMeshUtils.LoadSpriteMeshData(spriteMesh);
if (spriteMesh && spriteMeshData && spriteMesh.sprite && spriteMeshData.vertices.Length > 0)
{
SerializedProperty spriteProp = null;
int i = 0;
string name = "";
while (i < textureImporterSprites.arraySize && name != spriteMesh.sprite.name)
{
spriteProp = textureImporterSprites.GetArrayElementAtIndex(i);
name = spriteProp.FindPropertyRelative("m_Name").stringValue;
++i;
}
if (name == spriteMesh.sprite.name)
{
Rect textureRect = SpriteMeshUtils.CalculateSpriteRect(spriteMesh, 5);
spriteProp.FindPropertyRelative("m_Rect").rectValue = textureRect;
spriteProp.FindPropertyRelative("m_Alignment").intValue = 9;
spriteProp.FindPropertyRelative("m_Pivot").vector2Value = Vector2.Scale(spriteMeshData.pivotPoint - textureRect.position, new Vector2(1f / textureRect.size.x, 1f / textureRect.size.y));
textureImporter.userData = textureImporter.assetTimeStamp.ToString();
}
}
}
}
textureImporterSO.ApplyModifiedProperties();
}
}
static void DoSpriteOverride(SpriteMesh spriteMesh, Sprite sprite)
{
SpriteMeshData spriteMeshData = SpriteMeshUtils.LoadSpriteMeshData(spriteMesh);
if (spriteMeshData)
{
Rect rect = SpriteMeshUtils.CalculateSpriteRect(spriteMesh, 5);
Rect spriteRect = sprite.rect;
Vector2 factor = new Vector2(spriteRect.width / rect.width, spriteRect.height / rect.height);
Vector2[] newVertices = new List <Vector2>(spriteMeshData.vertices).ConvertAll(v => MathUtils.ClampPositionInRect(Vector2.Scale(v, factor), spriteRect) - spriteRect.position).ToArray();
ushort[] newIndices = new List <int>(spriteMeshData.indices).ConvertAll <ushort>(i => (ushort)i).ToArray();
sprite.OverrideGeometry(newVertices, newIndices);
}
}
void DoSpriteOverride(SpriteMesh spriteMesh, Sprite sprite)
{
TextureImporter textureImporter = (TextureImporter)assetImporter;
#if UNITY_5_1 || UNITY_5_2 || UNITY_5_3_OR_NEWER
Debug.Assert(textureImporter.spriteImportMode == SpriteImportMode.Single ||
textureImporter.spriteImportMode == SpriteImportMode.Multiple,
"Incompatible Sprite Mode. Use Single or Multiple.");
#endif
SpriteMeshData spriteMeshData = SpriteMeshUtils.LoadSpriteMeshData(spriteMesh);
if (spriteMeshData)
{
Vector2 factor = Vector2.one;
Rect spriteRect = sprite.rect;
Rect rectTextureSpace = new Rect();
if (textureImporter.spriteImportMode == SpriteImportMode.Single)
{
int width = 0;
int height = 0;
SpriteMeshUtils.GetSpriteTextureSize(spriteMesh.sprite, ref width, ref height);
rectTextureSpace = new Rect(0, 0, width, height);
}
else if (textureImporter.spriteImportMode == SpriteImportMode.Multiple)
{
rectTextureSpace = SpriteMeshUtils.CalculateSpriteRect(spriteMesh, 5);
}
factor = new Vector2(spriteRect.width / rectTextureSpace.width,
spriteRect.height / rectTextureSpace.height);
Vector2[] newVertices = new List <Vector2>(spriteMeshData.vertices).ConvertAll(v =>
MathUtils.ClampPositionInRect(Vector2.Scale(v, factor), spriteRect) - spriteRect.position)
.ToArray();
ushort[] newIndices =
new List <int>(spriteMeshData.indices).ConvertAll <ushort>(i => (ushort)i).ToArray();
sprite.OverrideGeometry(newVertices, newIndices);
}
}
