129 lines
3.6 KiB
C#
129 lines
3.6 KiB
C#
using UnityEditor;
|
|
using UnityEngine;
|
|
using System.IO;
|
|
|
|
namespace gay.lilyy.TextureStitcher
|
|
{
|
|
[CreateAssetMenu(fileName = "TextureStitcherSettings", menuName = "Texture Stitcher/Settings")]
|
|
public class TextureStitcherSettings : ScriptableObject
|
|
{
|
|
public Texture2D[] textures;
|
|
public string savePath = "Assets/StitchedTexture.png";
|
|
}
|
|
|
|
[CustomEditor(typeof(TextureStitcherSettings))]
|
|
public class TextureStitcherEditor : Editor
|
|
{
|
|
private SerializedProperty texturesProp;
|
|
private SerializedProperty savePathProp;
|
|
|
|
private void OnEnable()
|
|
{
|
|
texturesProp = serializedObject.FindProperty("textures");
|
|
savePathProp = serializedObject.FindProperty("savePath");
|
|
}
|
|
|
|
public override void OnInspectorGUI()
|
|
{
|
|
serializedObject.Update();
|
|
|
|
EditorGUILayout.LabelField("Texture Layers (Top → Bottom)", EditorStyles.boldLabel);
|
|
EditorGUILayout.PropertyField(savePathProp);
|
|
|
|
DrawReversedArray(texturesProp);
|
|
|
|
GUILayout.Space(10);
|
|
|
|
if (GUILayout.Button("Generate Stitched Texture"))
|
|
GenerateStitchedTexture();
|
|
|
|
serializedObject.ApplyModifiedProperties();
|
|
}
|
|
|
|
private void DrawReversedArray(SerializedProperty array)
|
|
{
|
|
if (!array.isArray)
|
|
return;
|
|
|
|
// Draw size field (normal Unity behavior)
|
|
EditorGUILayout.PropertyField(array.FindPropertyRelative("Array.size"));
|
|
|
|
// Reverse array in-place
|
|
int count = array.arraySize;
|
|
for (int i = 0; i < count / 2; i++)
|
|
array.MoveArrayElement(i, count - 1 - i);
|
|
|
|
// Draw array normally
|
|
EditorGUILayout.PropertyField(array, GUIContent.none, true);
|
|
|
|
// Restore original order
|
|
for (int i = 0; i < count / 2; i++)
|
|
array.MoveArrayElement(i, count - 1 - i);
|
|
}
|
|
|
|
private void GenerateStitchedTexture()
|
|
{
|
|
TextureStitcherSettings settings = (TextureStitcherSettings)target;
|
|
GenerateStitchedTexture(settings);
|
|
}
|
|
|
|
internal static void GenerateStitchedTexture(TextureStitcherSettings settings)
|
|
{
|
|
int width = 0;
|
|
int height = 0;
|
|
|
|
foreach (var tex in settings.textures)
|
|
{
|
|
if (!tex) continue;
|
|
width = Mathf.Max(width, tex.width);
|
|
height = Mathf.Max(height, tex.height);
|
|
}
|
|
|
|
Texture2D output = new Texture2D(width, height, TextureFormat.RGBA32, false);
|
|
Color[] pixels = new Color[width * height];
|
|
for (int i = 0; i < pixels.Length; i++) pixels[i] = Color.clear;
|
|
|
|
output.SetPixels(pixels);
|
|
|
|
// Bottom → top
|
|
for (int i = 0; i < settings.textures.Length; i++)
|
|
{
|
|
var tex = settings.textures[i];
|
|
if (!tex) continue;
|
|
|
|
Texture2D resized = Resize(tex, width, height);
|
|
Color[] src = resized.GetPixels();
|
|
Color[] dst = output.GetPixels();
|
|
|
|
for (int p = 0; p < dst.Length; p++)
|
|
{
|
|
Color s = src[p];
|
|
dst[p] = Color.Lerp(dst[p], s, s.a);
|
|
}
|
|
|
|
output.SetPixels(dst);
|
|
}
|
|
|
|
output.Apply();
|
|
File.WriteAllBytes(settings.savePath, output.EncodeToPNG());
|
|
AssetDatabase.Refresh();
|
|
|
|
Debug.Log("Stitched texture saved to " + settings.savePath);
|
|
}
|
|
|
|
private static Texture2D Resize(Texture2D src, int width, int height)
|
|
{
|
|
RenderTexture rt = RenderTexture.GetTemporary(width, height, 0);
|
|
Graphics.Blit(src, rt);
|
|
|
|
RenderTexture.active = rt;
|
|
Texture2D result = new Texture2D(width, height, TextureFormat.RGBA32, false);
|
|
result.ReadPixels(new Rect(0, 0, width, height), 0, 0);
|
|
result.Apply();
|
|
|
|
RenderTexture.active = null;
|
|
RenderTexture.ReleaseTemporary(rt);
|
|
return result;
|
|
}
|
|
}
|
|
}
|