public static Sprite CreateSprite(this Texture2D texture, RectInt rect, Vector2?pivot = null, float pixelsPerUnit = 100)
{
if (pivot == null)
{
pivot = new Vector2(0.5f, 0.5f);
}
;
return(Sprite.Create(texture, rect.ToRect(), (Vector2)pivot, pixelsPerUnit));
}
/// <summary>
/// 复制为2D材质
/// </summary>
/// <param name="value">目标渲染材质</param>
/// <param name="rect">截取区域</param>
/// <returns></returns>
public static Texture2D CopyAsTexture2D(this RenderTexture value, RectInt rect)
{
var result = new Texture2D(rect.width, rect.height, TextureFormat.ARGB32, false);
var currentRenderTarget = RenderTexture.active;
RenderTexture.active = value;
result.ReadPixels(rect.ToRect(), 0, 0); // 从当前RenderTexture读取数据，天知道Unity为何把函数叫这个名
result.Apply();
RenderTexture.active = currentRenderTarget;
return(result);
}
private static SpriteMetaData CreateSpriteMetaData(int frame, SpritesheetData data, string name, TextureImporter textureImporter, SpritesheetDataImporter spritesheetImporter, Texture2D texture)
{
int rowSubdivisions = spritesheetImporter.subdivideSprites ? spritesheetImporter.subdivisions.y : 1;
int columnSubdivisions = spritesheetImporter.subdivideSprites ? spritesheetImporter.subdivisions.x : 1;
int numRows = data.numRows * rowSubdivisions;
int numColumns = data.numColumns * columnSubdivisions;
int columnWidth = data.spriteWidth / columnSubdivisions;
int rowHeight = data.spriteHeight / rowSubdivisions;
// Our spritesheets and Unity's sprite coordinate system are both row-major; however, Unity's origin is in the bottom left
// of the texture, and ours is in the top left. We just have to do a small transformation to match.
int row = numRows - frame / numColumns - 1;
int column = frame % numColumns;
// The input texture might have padding applied, which would be at the right and the bottom. Since our coordinate system
// and Unity's both start on the left, we don't care about the horizontal padding.
Rect spriteRect = new Rect(columnWidth * column, data.paddingHeight + rowHeight * row, columnWidth, rowHeight);
Log($"Frame {frame} ({name}) is in row {row} and column {column} (Unity coordinates); its subrect is {spriteRect}", LogLevel.Verbose);
if (spritesheetImporter.trimIndividualSprites)
{
RectInt trimmedRect = texture.GetTrimRegion(spritesheetImporter.trimAlphaThreshold, spriteRect.ToRectInt());
Log($"Trimmed sprite rect from {spriteRect} to {trimmedRect}", LogLevel.Verbose);
spriteRect = trimmedRect.ToRect();
}
var metadata = new SpriteMetaData()
{
alignment = (int)spritesheetImporter.pivotPlacement,
border = Vector4.zero,
name = name,
rect = spriteRect
};
if (spritesheetImporter.pivotPlacement == SpriteAlignment.Custom)
{
metadata.pivot = FindCustomPivotPoint(metadata, textureImporter, spritesheetImporter);
}
return(metadata);
}
private void OnGUI()
{
imageFolder = EditorGUILayout.TextField("Character Image Folder", imageFolder);
GUILayout.BeginHorizontal();
if (GUILayout.Button("Load Selected Folder"))
{
imageFolder = EditorUtils.GetSelectedDirectory();
uncropped = imageFolder.ToLower().Contains("uncrop");
layers.Clear();
dirty = true;
}
uncropped = GUILayout.Toggle(uncropped, "Uncropped");
GUILayout.EndHorizontal();
if (!uncropped)
{
referenceSize = EditorGUILayout.Vector2IntField("Reference Size", referenceSize);
pixelsPerUnit = EditorGUILayout.FloatField("Pixels Per Unit", pixelsPerUnit);
}
reorderableList.DoLayoutList();
if (GUILayout.Button("Refresh"))
{
dirty = true;
}
if (dirty)
{
dirty = false;
var sprites = layers.Where(p => !string.IsNullOrEmpty(p.name)).Select(p => p.sprite).ToList();
if (sprites.Count == 0)
{
texture = null;
}
else
{
if (uncropped)
{
var sprite = sprites[0].sprite;
merger.referenceSize = new Vector2Int(sprite.texture.width, sprite.texture.height);
merger.pixelsPerUnit = sprite.pixelsPerUnit;
}
else
{
merger.referenceSize = referenceSize;
merger.pixelsPerUnit = pixelsPerUnit;
}
texture = merger.GetMergedTexture(name, sprites);
}
}
if (texture == null)
{
return;
}
GUILayout.Label("Composed Pose Lua Table", EditorStyles.boldLabel);
var luaTable = LayersToLuaTable(layers);
EditorGUILayout.SelectableLabel(luaTable);
if (GUILayout.Button("Copy"))
{
EditorGUIUtility.systemCopyBuffer = luaTable;
}
GUILayout.Label("Preview", EditorStyles.boldLabel);
useCaptureBox = GUILayout.Toggle(useCaptureBox, "Use Capture Box");
if (useCaptureBox)
{
GUILayout.BeginHorizontal();
GUILayout.Label("Capture Box");
captureBox = EditorGUILayout.RectIntField(captureBox);
GUILayout.EndHorizontal();
GUILayout.BeginHorizontal();
captureDest = EditorGUILayout.TextField("Capture Destination", captureDest);
if (GUILayout.Button("Capture"))
{
Texture2D tex = new Texture2D(captureBox.width, captureBox.height, TextureFormat.ARGB32, false);
RenderTexture.active = texture as RenderTexture;
tex.ReadPixels(new Rect(captureBox.x, captureBox.y, captureBox.width, captureBox.height), 0, 0);
RenderTexture.active = null;
tex.Apply();
var absoluteCaptureDest = Path.Combine(Path.GetDirectoryName(Application.dataPath), captureDest);
Directory.CreateDirectory(Path.GetDirectoryName(absoluteCaptureDest));
File.WriteAllBytes(absoluteCaptureDest, tex.EncodeToPNG());
EditorUtility.DisplayDialog("Capture Finished", $"Saved at {absoluteCaptureDest}", "OK");
}
GUILayout.EndHorizontal();
}
var previewRect =
EditorGUILayout.GetControlRect(false, GUILayout.ExpandWidth(true), GUILayout.ExpandHeight(true));
previewRect.size = Utils.GetContentSize(previewRect.size, (float)texture.width / texture.height);
var scale = previewRect.width / texture.width;
EditorGUI.DrawTextureTransparent(previewRect, texture);
if (useCaptureBox)
{
EditorUtils.DrawPreviewCaptureFrame(previewRect, captureBox.ToRect(), scale, false, Color.red);
}
}
