///////////////////////////////////////////////////////////////////////////////
// Public Functions
///////////////////////////////////////////////////////////////////////////////
// ------------------------------------------------------------------
/// Create a new GameObject contains an exMesh component
// ------------------------------------------------------------------
public static exMesh Create(exLayer _layer)
{
#if UNITY_EDITOR
GameObject go = UnityEditor.EditorUtility.CreateGameObjectWithHideFlags("", exReleaseFlags.hideAndDontSave | exReleaseFlags.notEditable);
#else
GameObject go = new GameObject();
// 当在EX_DEBUG模式下，如果显示着GO的Inspector，再启动游戏，由于GO是DontSave的，会先被销毁。这时Unity将会报错，但不影响运行，这个问题在类似插件中也会存在。
go.hideFlags = exReleaseFlags.hideAndDontSave | exReleaseFlags.notEditable;
#endif
exMesh res = go.AddComponent <exMesh>();
res.UpdateDebugName(_layer);
res.Init();
return(res);
}
private void ShiftSprite (exMesh _src, exMesh _dst, exLayeredSprite _sprite) {
#if EX_DEBUG
int oldVertexCount = _sprite.vertexCount;
#endif
RemoveFromMesh(_sprite, _src);
#if EX_DEBUG
exDebug.Assert (_sprite.vertexCount == oldVertexCount);
#endif
AddToMesh(_sprite, _dst);
#if EX_DEBUG
exDebug.Assert (_sprite.vertexCount == oldVertexCount);
#endif
}
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
private void RemoveIndices (exMesh _mesh, exLayeredSprite _sprite) {
exDebug.Assert(_sprite.isInIndexBuffer);
if (_sprite.isInIndexBuffer) {
// update indices
_mesh.indices.RemoveRange(_sprite.indexBufferIndex, _sprite.indexCount);
_mesh.updateFlags |= exUpdateFlags.Index;
// update indexBufferIndex and sortedSpriteList
for (int i = _mesh.sortedSpriteList.Count - 1; i >= 0; --i) {
exLayeredSprite otherSprite = _mesh.sortedSpriteList[i];
if (otherSprite.indexBufferIndex > _sprite.indexBufferIndex) {
otherSprite.indexBufferIndex -= _sprite.indexCount;
exDebug.Assert(otherSprite.indexBufferIndex >= _sprite.indexBufferIndex);
}
else {
exDebug.Assert(otherSprite == _sprite);
_mesh.sortedSpriteList.RemoveAt(i);
break;
}
}
_sprite.isInIndexBuffer = false;
}
}
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
private void AddIndices (exMesh _mesh, exLayeredSprite _sprite) {
exDebug.Assert(!_sprite.isInIndexBuffer);
if (!_sprite.isInIndexBuffer) {
int sortedSpriteIndex;
if (_mesh.sortedSpriteList.Count > 0) {
if (ordered_ == false && _sprite >= _mesh.sortedSpriteList[_mesh.sortedSpriteList.Count - 1]) {
// check whether we can just append it
sortedSpriteIndex = _mesh.sortedSpriteList.Count;
}
else {
sortedSpriteIndex = _mesh.sortedSpriteList.BinarySearch(_sprite);
exDebug.Assert(ordered_ == false || sortedSpriteIndex < 0, "sprite实现的比较方法决定了这种情况下不可能找到等同的排序");
}
if (sortedSpriteIndex < 0) {
sortedSpriteIndex = ~sortedSpriteIndex;
}
if (sortedSpriteIndex >= _mesh.sortedSpriteList.Count) {
// this sprite's depth is biggest
_sprite.indexBufferIndex = _mesh.indices.Count;
#if EX_DEBUG
exLayeredSprite lastSprite = _mesh.sortedSpriteList[_mesh.sortedSpriteList.Count - 1];
exDebug.Assert(_sprite.indexBufferIndex == lastSprite.indexBufferIndex + lastSprite.indexCount);
#endif
}
else {
_sprite.indexBufferIndex = _mesh.sortedSpriteList[sortedSpriteIndex].indexBufferIndex;
}
}
else {
sortedSpriteIndex = 0;
_sprite.indexBufferIndex = 0;
}
// insert range into _indices
int indexCount = _sprite.indexCount;
exDebug.Assert(indexCount > 0);
_mesh.indices.AddRange(indexCount);
// TODO: Array.Copy
for (int i = _mesh.indices.Count - 1 - indexCount; i >= _sprite.indexBufferIndex ; --i) {
_mesh.indices.buffer[i + indexCount] = _mesh.indices.buffer[i];
}
_sprite.updateFlags |= exUpdateFlags.Index;
// update other sprites indexBufferIndex
for (int i = sortedSpriteIndex; i < _mesh.sortedSpriteList.Count; ++i) {
exLayeredSprite otherSprite = _mesh.sortedSpriteList[i];
otherSprite.indexBufferIndex += indexCount;
}
// insert into _sortedSpriteList
_mesh.sortedSpriteList.Insert(sortedSpriteIndex, _sprite);
// 这里并没给index buffer分配初始值，所以index很有可能全是0，如果减小index值时，要注意是否还是0，如果是0就不能再减小了。
}
}
// ------------------------------------------------------------------
// Desc:
// ------------------------------------------------------------------
private void RemoveFromMesh (exLayeredSprite _sprite, exMesh _mesh) {
_mesh.spriteList.RemoveAt(_sprite.spriteIndexInMesh);
int vertexCount = _sprite.vertexCount;
for (int i = _sprite.spriteIndexInMesh; i < _mesh.spriteList.Count; ++i) {
exLayeredSprite sprite = _mesh.spriteList[i];
// update sprite and vertic index after removed sprite
sprite.spriteIndexInMesh = i;
sprite.vertexBufferIndex -= vertexCount;
// update indices to make them match new vertic index
if (sprite.isInIndexBuffer) {
int indexEnd = sprite.indexBufferIndex + sprite.indexCount;
for (int index = sprite.indexBufferIndex; index < indexEnd; ++index) {
//if (index >= _mesh.indices.Count) {
// Debug.Log(string.Format("[RemoveFromMesh|exLayer] index: {1} _mesh.indices.Count: {0}", _mesh.indices.Count, index));
//}
if (_mesh.indices.buffer[index] > 0) { // only shift if inited index in case of negative index value
_mesh.indices.buffer[index] -= vertexCount;
#if EX_DEBUG
if (_mesh.indices.buffer[index] < 0 && (sprite.updateFlags & exUpdateFlags.Index) == 0) {
Debug.LogError(string.Format("Failed setting triangles. Some indices are referencing out of bounds vertices. " +
"removing sprite: {0}, error sprite: {2} mesh: {1}", _sprite.gameObject.name, _mesh.gameObject.name, sprite), sprite);
sprite.OutputDebugInfo();
}
#endif
}
}
}
}
_mesh.updateFlags |= exUpdateFlags.VertexAndIndex;
// update vertices
_mesh.vertices.RemoveRange(_sprite.vertexBufferIndex, vertexCount);
_mesh.colors32.RemoveRange(_sprite.vertexBufferIndex, vertexCount);
_mesh.uvs.RemoveRange(_sprite.vertexBufferIndex, vertexCount);
#if LAZY_UPDATE_BUFFER_TAIL
bool removeLastSprite = (_sprite.spriteIndexInMesh == _mesh.spriteList.Count);
if (!removeLastSprite) {
_mesh.updateFlags |= (exUpdateFlags.Color | exUpdateFlags.UV | exUpdateFlags.Normal);
}
#else
_mesh.updateFlags |= (UpdateFlags.Color | UpdateFlags.UV | UpdateFlags.Normal);
#endif
if (_sprite.isInIndexBuffer) {
RemoveIndices(_mesh, _sprite);
}
exDebug.Assert(_sprite.indexBufferIndex == -1);
exDebug.Assert(_mesh.vertices.Count == _mesh.uvs.Count, "uvs array needs to be the same size as the vertices array");
exDebug.Assert(_mesh.vertices.Count == _mesh.colors32.Count, "colors32 array needs to be the same size as the vertices array");
}
// ------------------------------------------------------------------
/// Add an exLayeredSprite to the mesh.
// ------------------------------------------------------------------
private void AddToMesh (exLayeredSprite _sprite, exMesh _mesh) {
exDebug.Assert(_mesh.spriteList.Contains(_sprite) == false, "Can't add duplicated sprite");
_sprite.updateFlags = exUpdateFlags.None;
_sprite.spriteIndexInMesh = _mesh.spriteList.Count;
_mesh.spriteList.Add(_sprite);
_sprite.FillBuffers(_mesh.vertices, _mesh.uvs, _mesh.colors32);
if (exLayeredSprite.enableFastShowHide) {
AddIndices(_mesh, _sprite);
_sprite.transparent = !_sprite.visible;
}
else if (_sprite.visible) {
AddIndices(_mesh, _sprite);
}
exDebug.Assert(_mesh.vertices.Count == _mesh.uvs.Count, "uvs array needs to be the same size as the vertices array");
exDebug.Assert(_mesh.vertices.Count == _mesh.colors32.Count, "colors32 array needs to be the same size as the vertices array");
}
