HeavenStudio/Assets/Editor/SpritesheetScaler.cs

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3.9 KiB
C#
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using UnityEngine;
using UnityEditor;
using System.Collections.Generic;
public class SpritesheetScaler : EditorWindow
{
Object source;
float multiplier = 1;
int inflateX = 0;
int inflateY = 0;
// Creates a new option in "Windows"
[MenuItem("Window/Scale spritesheet pivots and slices")]
static void Init()
{
// Get existing open window or if none, make a new one:
SpritesheetScaler window = (SpritesheetScaler)EditorWindow.GetWindow(typeof(SpritesheetScaler));
window.Show();
}
void OnGUI()
{
GUILayout.BeginHorizontal();
GUILayout.Label("Source texture:", EditorStyles.boldLabel);
source = EditorGUILayout.ObjectField(source, typeof(Texture2D), false, GUILayout.Width(220));
GUILayout.EndHorizontal();
GUILayout.BeginHorizontal();
GUILayout.Label("Multiplier:", EditorStyles.boldLabel);
multiplier = EditorGUILayout.FloatField(multiplier, GUILayout.Width(220));
GUILayout.EndHorizontal();
GUILayout.Space(5f);
GUILayout.BeginHorizontal();
GUILayout.Label("Inflate Quads:", EditorStyles.boldLabel);
GUILayout.EndHorizontal();
GUILayout.BeginHorizontal();
GUILayout.Label("X", EditorStyles.label);
inflateX = EditorGUILayout.IntField(inflateX, GUILayout.Width(220/2));
GUILayout.Label("Y", EditorStyles.label);
inflateY = EditorGUILayout.IntField(inflateY, GUILayout.Width(220/2));
GUILayout.EndHorizontal();
GUILayout.Space(25f);
if (GUILayout.Button("Scale pivots and slices"))
{
ScalePivotsAndSlices();
}
}
void ScalePivotsAndSlices()
{
if (!source || (multiplier <= 0))
{
Debug.Log("Missing one object");
return;
}
if (source.GetType() != typeof(Texture2D))
{
Debug.Log(source + "needs to be Texture2D!");
return;
}
string sourcePath = AssetDatabase.GetAssetPath(source);
TextureImporter ti1 = AssetImporter.GetAtPath(sourcePath) as TextureImporter;
bool wasReadable = ti1.isReadable;
ti1.isReadable = true;
ti1.spritePixelsPerUnit = (ti1.spritePixelsPerUnit * multiplier);
List<SpriteMetaData> newData = new List<SpriteMetaData>();
Debug.Log("Amount of slices found: " + ti1.spritesheet.Length);
for (int i = 0; i < ti1.spritesheet.Length; i++)
{
SpriteMetaData d = ti1.spritesheet[i];
// pivot relative to the origin of the rect in pixels
Vector2 oldPivot = new Vector2(d.pivot.x * d.rect.width, d.pivot.y * d.rect.height);
d.rect = ScaleRect(d.rect, multiplier, inflateX, inflateY);
d.border.x += d.border.x > 0 ? inflateX : 0;
d.border.y += d.border.y > 0 ? inflateY : 0;
d.border.z += d.border.z > 0 ? inflateX : 0;
d.border.w += d.border.w > 0 ? inflateY : 0;
if (d.alignment != (int)SpriteAlignment.Center && (inflateX > 0 || inflateY > 0))
{
d.alignment = (int)SpriteAlignment.Custom;
oldPivot += new Vector2(inflateX, inflateY);
Vector2 newPivot = oldPivot * multiplier;
d.pivot = new Vector2(newPivot.x / d.rect.width, newPivot.y / d.rect.height);
}
d.border *= multiplier;
newData.Add(d);
}
ti1.spritesheet = newData.ToArray();
ti1.isReadable = wasReadable;
AssetDatabase.ImportAsset(sourcePath, ImportAssetOptions.ForceUpdate);
}
Rect ScaleRect(Rect source, float mult, int inflateX, int inflateY)
{
var newRect = new Rect();
newRect.Set((source.x - inflateX) * mult, (source.y - inflateY) * mult, (source.width + inflateX*2) * mult, (source.height + inflateY*2) * mult);
return newRect;
}
}