518 lines
22 KiB
C#
518 lines
22 KiB
C#
using System;
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using System.IO;
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using UnityEngine;
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using UnityEngine.Experimental.Rendering;
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using UnityEngine.TerrainTools;
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using UnityEngine.Rendering;
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namespace UnityEditor.TerrainTools
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{
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internal class ToolboxHelper
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{
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// Toolbox setting serialization
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public static string LibraryPath = "/../Library/TerrainTools/";
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public static string ToolboxPrefsWindow = "ToolboxWindowPrefs";
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public static string ToolboxPrefsCreate = "ToolboxCreatePrefs";
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public static string ToolboxPrefsSettings = "ToolboxSettingsPrefs";
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public static string ToolboxPrefsUtility = "ToolboxUtilityPrefs";
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public static string ToolboxPrefsVisualization = "ToolboxVisualizationPrefs";
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public enum ByteOrder { Mac = 1, Windows = 2 };
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public enum RenderPipeline
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{
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Default,
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HD,
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LW,
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Universal,
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None
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}
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public static int[] GUITextureResolutions = new int[] { 32, 64, 128, 256, 512, 1024, 2048, 4096 };
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public static string[] GUITextureResolutionNames = new string[] { "32", "64", "128", "256", "512", "1024", "2048", "4096" };
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public static int[] GUIHeightmapResolutions = new int[] { 33, 65, 129, 257, 513, 1025, 2049, 4097 };
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public static GUIContent[] GUIHeightmapResolutionNames = new GUIContent[]
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{
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EditorGUIUtility.TrTextContent("33"),
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EditorGUIUtility.TrTextContent("65"),
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EditorGUIUtility.TrTextContent("129"),
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EditorGUIUtility.TrTextContent("257"),
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EditorGUIUtility.TrTextContent("513"),
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EditorGUIUtility.TrTextContent("1025"),
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EditorGUIUtility.TrTextContent("2049"),
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EditorGUIUtility.TrTextContent("4097")
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};
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public static bool IsPowerOfTwo(int x)
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{
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return (x != 0) && ((x & (x - 1)) == 0);
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}
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public static bool IsInteger(double x)
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{
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return (x % 1) == 0;
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}
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public static string GetPrefFilePath(string prefType)
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{
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string filePath = string.Empty;
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string dirPath = Application.dataPath + LibraryPath;
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if (!Directory.Exists(dirPath))
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{
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Directory.CreateDirectory(dirPath);
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}
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filePath = dirPath + prefType + ".json";
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return filePath;
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}
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public static string GetBitDepth(Heightmap.Depth depth)
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{
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switch (depth)
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{
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case Heightmap.Depth.Bit16:
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return "16 bit";
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case Heightmap.Depth.Bit8:
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return "8 bit";
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default:
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return "8 bit";
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}
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}
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public static Terrain[] GetSelectedTerrainsInScene()
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{
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var objs = Selection.GetFiltered(typeof(Terrain), SelectionMode.Unfiltered);
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var terrains = new Terrain[objs.Length];
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for (var i = 0; i < objs.Length; i++)
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{
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terrains[i] = objs[i] as Terrain;
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}
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return terrains;
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}
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public static Terrain[] GetAllTerrainsInScene()
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{
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return GameObject.FindObjectsOfType<Terrain>();
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}
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public static void CalculateAdjacencies(Terrain[] terrains, int tilesX, int tilesZ)
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{
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if (terrains == null || terrains.Length == 0)
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{
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return;
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}
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// set neighbor terrains to update normal maps
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for (int y = 0; y < tilesZ; y++)
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{
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for (int x = 0; x < tilesX; x++)
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{
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int index = (y * tilesX) + x;
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Terrain terrain = terrains[index];
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Terrain leftTerrain = (x > 0) ? terrains[index - 1] : null;
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Terrain rightTerrain = (x < tilesX - 1) ? terrains[index + 1] : null;
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Terrain topTerrain = (y > 0) ? terrains[index - tilesX] : null;
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Terrain bottomTerrain = (y < tilesZ - 1) ? terrains[index + tilesX] : null;
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// NOTE: "top" and "bottom" are reversed because of the way the terrain is handled...
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terrain.SetNeighbors(leftTerrain, bottomTerrain, rightTerrain, topTerrain);
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}
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}
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}
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public static Texture2D GetTextureCopy(Texture2D texture)
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{
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var creationFlags = texture.mipmapCount > 0
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? TextureCreationFlags.MipChain
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: TextureCreationFlags.None;
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var textureCopy = new Texture2D(texture.width, texture.height, texture.graphicsFormat, texture.mipmapCount,
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creationFlags);
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Graphics.CopyTexture(texture, textureCopy);
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return textureCopy;
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}
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public static Texture2D GetPartialTexture(Texture2D sourceTexture, Vector2Int resolution, Vector2Int offset)
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{
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if (offset.x > resolution.x || offset.y > resolution.y)
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return null;
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var destColor = sourceTexture.GetPixels(offset.x, offset.y, resolution.x, resolution.y);
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Texture2D newTexture = new Texture2D(resolution.x, resolution.y);
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newTexture.SetPixels(destColor);
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return newTexture;
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}
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// referencing from TerrainInspector.ResizeControltexture()
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public static void ResizeControlTexture(TerrainData terrainData, int resolution)
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{
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RenderTexture oldRT = RenderTexture.active;
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RenderTexture[] oldAlphaMaps = new RenderTexture[terrainData.alphamapTextureCount];
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for (int i = 0; i < oldAlphaMaps.Length; i++)
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{
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terrainData.alphamapTextures[i].filterMode = FilterMode.Bilinear;
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oldAlphaMaps[i] = RenderTexture.GetTemporary(resolution, resolution, 0, SystemInfo.GetGraphicsFormat(DefaultFormat.HDR));
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Graphics.Blit(terrainData.alphamapTextures[i], oldAlphaMaps[i]);
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}
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Undo.RegisterCompleteObjectUndo(terrainData, "Resize alphamap");
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terrainData.alphamapResolution = resolution;
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for (int i = 0; i < oldAlphaMaps.Length; i++)
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{
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RenderTexture.active = oldAlphaMaps[i];
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CopyActiveRenderTextureToTexture(terrainData.GetAlphamapTexture(i), new RectInt(0, 0, resolution, resolution), Vector2Int.zero, false);
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}
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terrainData.SetBaseMapDirty();
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RenderTexture.active = oldRT;
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for (int i = 0; i < oldAlphaMaps.Length; i++)
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{
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RenderTexture.ReleaseTemporary(oldAlphaMaps[i]);
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}
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terrainData.SetBaseMapDirty();
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}
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// referencing from TerrainData.GPUCopy.CopyActiveRenderTextureToTexture()
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public static void CopyActiveRenderTextureToTexture(Texture2D dstTexture, RectInt sourceRect, Vector2Int dest, bool allowDelayedCPUSync)
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{
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var source = RenderTexture.active;
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if (source == null)
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throw new InvalidDataException("Active RenderTexture is null.");
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int dstWidth = dstTexture.width;
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int dstHeight = dstTexture.height;
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allowDelayedCPUSync = allowDelayedCPUSync && SupportsCopyTextureBetweenRTAndTexture;
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if (allowDelayedCPUSync)
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{
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if (dstTexture.mipmapCount > 1)
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{
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var tmp = RenderTexture.GetTemporary(new RenderTextureDescriptor(dstWidth, dstHeight, source.format));
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if (!tmp.IsCreated())
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{
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tmp.Create();
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}
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Graphics.CopyTexture(dstTexture, 0, 0, tmp, 0, 0);
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Graphics.CopyTexture(source, 0, 0, sourceRect.x, sourceRect.y, sourceRect.width, sourceRect.height, tmp, 0, 0, dest.x, dest.y);
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tmp.GenerateMips();
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Graphics.CopyTexture(tmp, dstTexture);
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RenderTexture.ReleaseTemporary(tmp);
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}
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else
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{
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Graphics.CopyTexture(source, 0, 0, sourceRect.x, sourceRect.y, sourceRect.width, sourceRect.height, dstTexture, 0, 0, dest.x, dest.y);
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}
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}
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else
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{
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if (SystemInfo.graphicsDeviceType == GraphicsDeviceType.Metal || !SystemInfo.graphicsUVStartsAtTop)
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dstTexture.ReadPixels(new Rect(sourceRect.x, sourceRect.y, sourceRect.width, sourceRect.height), dest.x, dest.y);
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else
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dstTexture.ReadPixels(new Rect(sourceRect.x, source.height - sourceRect.yMax, sourceRect.width, sourceRect.height), dest.x, dest.y);
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dstTexture.Apply(true);
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}
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}
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private static bool SupportsCopyTextureBetweenRTAndTexture {
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get
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{
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const CopyTextureSupport kRT2TexAndTex2RT = CopyTextureSupport.RTToTexture | CopyTextureSupport.TextureToRT;
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return (SystemInfo.copyTextureSupport & kRT2TexAndTex2RT) == kRT2TexAndTex2RT;
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}
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}
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public static float kNormalizedHeightScale => 32766.0f / 65535.0f;
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public static void CopyTextureToTerrainHeight(TerrainData terrainData, Texture2D heightmap, Vector2Int indexOffset, int resolution, int numTiles, float baseLevel, float remap)
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{
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terrainData.heightmapResolution = resolution + 1;
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float hWidth = heightmap.height;
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float div = hWidth / numTiles;
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float scale = ((resolution / (resolution + 1.0f)) * (div + 1)) / hWidth;
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float offset = ((resolution / (resolution + 1.0f)) * div) / hWidth;
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Vector2 scaleV = new Vector2(scale, scale);
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Vector2 offsetV = new Vector2(offset * indexOffset.x, offset * indexOffset.y);
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Material blitMaterial = GetHeightBlitMaterial();
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blitMaterial.SetFloat("_Height_Offset", baseLevel * kNormalizedHeightScale);
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blitMaterial.SetFloat("_Height_Scale", remap * kNormalizedHeightScale);
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RenderTexture heightmapRT = RenderTexture.GetTemporary(terrainData.heightmapTexture.descriptor);
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Graphics.Blit(heightmap, heightmapRT, blitMaterial);
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Graphics.Blit(heightmapRT, terrainData.heightmapTexture, scaleV, offsetV);
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terrainData.DirtyHeightmapRegion(new RectInt(0, 0, terrainData.heightmapTexture.width, terrainData.heightmapTexture.height), TerrainHeightmapSyncControl.HeightAndLod);
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RenderTexture.ReleaseTemporary(heightmapRT);
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}
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public static void ResizeHeightmap(TerrainData terrainData, int resolution)
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{
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RenderTexture oldRT = RenderTexture.active;
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RenderTexture oldHeightmap = RenderTexture.GetTemporary(terrainData.heightmapTexture.descriptor);
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Graphics.Blit(terrainData.heightmapTexture, oldHeightmap);
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#if UNITY_2019_3_OR_NEWER
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// terrain holes
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RenderTexture oldHoles = RenderTexture.GetTemporary(terrainData.holesTexture.width, terrainData.holesTexture.height);
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Graphics.Blit(terrainData.holesTexture, oldHoles);
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#endif
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Undo.RegisterCompleteObjectUndo(terrainData, "Resize heightmap");
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float sUV = 1.0f;
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int dWidth = terrainData.heightmapResolution;
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int sWidth = resolution;
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Vector3 oldSize = terrainData.size;
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terrainData.heightmapResolution = resolution;
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terrainData.size = oldSize;
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oldHeightmap.filterMode = FilterMode.Bilinear;
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// Make sure textures are offset correctly when resampling
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// tsuv = (suv * swidth - 0.5) / (swidth - 1)
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// duv = (tsuv(dwidth - 1) + 0.5) / dwidth
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// duv = (((suv * swidth - 0.5) / (swidth - 1)) * (dwidth - 1) + 0.5) / dwidth
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// k = (dwidth - 1) / (swidth - 1) / dwidth
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// duv = suv * (swidth * k) + 0.5 / dwidth - 0.5 * k
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float k = (dWidth - 1.0f) / (sWidth - 1.0f) / dWidth;
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float scaleX = sUV * (sWidth * k);
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float offsetX = (float)(0.5 / dWidth - 0.5 * k);
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Vector2 scale = new Vector2(scaleX, scaleX);
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Vector2 offset = new Vector2(offsetX, offsetX);
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Graphics.Blit(oldHeightmap, terrainData.heightmapTexture, scale, offset);
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RenderTexture.ReleaseTemporary(oldHeightmap);
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#if UNITY_2019_3_OR_NEWER
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oldHoles.filterMode = FilterMode.Point;
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Graphics.Blit(oldHoles, (RenderTexture)terrainData.holesTexture);
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RenderTexture.ReleaseTemporary(oldHoles);
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#endif
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RenderTexture.active = oldRT;
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terrainData.DirtyHeightmapRegion(new RectInt(0, 0, terrainData.heightmapTexture.width, terrainData.heightmapTexture.height), TerrainHeightmapSyncControl.HeightAndLod);
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#if UNITY_2019_3_OR_NEWER
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terrainData.DirtyTextureRegion(TerrainData.HolesTextureName, new RectInt(0, 0, terrainData.holesTexture.width, terrainData.holesTexture.height), false);
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#endif
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}
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// Unity PNG encoder does not support 16bit export, change will come later 2019
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public static void ExportTerrainHeightsToTexture(TerrainData terrainData, Heightmap.Format format, string path, bool flipVertical, Vector2 inputLevelsRange)
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{
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RenderTexture oldRT = RenderTexture.active;
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int width = terrainData.heightmapTexture.width - 1;
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int height = terrainData.heightmapTexture.height - 1;
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var texture = new Texture2D(width, height, terrainData.heightmapTexture.graphicsFormat, TextureCreationFlags.None);
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RenderTexture.active = terrainData.heightmapTexture;
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texture.ReadPixels(new Rect(0, 0, width, height), 0, 0);
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//Remap Texture
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Color[] pixels = texture.GetPixels();
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for (int i = 0; i < pixels.Length; i += 4)
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{
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pixels[i].r = (pixels[i].r * 2) * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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pixels[i + 1].r = (pixels[i + 1].r * 2) * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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pixels[i + 2].r = (pixels[i + 2].r * 2) * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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pixels[i + 3].r = (pixels[i + 3].r * 2) * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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}
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texture.SetPixels(pixels);
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texture.Apply();
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//Flip Texture
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if (flipVertical)
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ToolboxHelper.FlipTexture(texture, true);
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byte[] bytes;
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switch (format)
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{
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case Heightmap.Format.TGA:
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bytes = texture.EncodeToTGA();
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path = path + ".tga";
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break;
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default:
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bytes = texture.EncodeToPNG();
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path = path + ".png";
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break;
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}
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File.WriteAllBytes(path, bytes);
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RenderTexture.active = oldRT;
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}
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/// <summary>
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/// Get a path relative to the project directory for saving assets.
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/// If the path is outside the assets directory it will return the Assets folder.
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/// </summary>
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/// <param name="requestedDirectory">The directory we want to save to, absolute or relative</param>
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/// <param name="forceToAssets">If we want the directory to be forced into the assets directory</param>
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/// <returns>A relative path, inside the project directory</returns>
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internal static string GetProjectRelativeSaveDirectory(string requestedDirectory, bool forceToAssets = true)
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{
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var referenceUri = new Uri(Application.dataPath + "/..");
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if (Path.IsPathRooted(requestedDirectory))
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{
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try
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{
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var fileUri = new Uri(requestedDirectory);
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requestedDirectory = Uri.UnescapeDataString(referenceUri.MakeRelativeUri(fileUri).ToString());
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}
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catch
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{
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if (forceToAssets)
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requestedDirectory = "Assets";
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return requestedDirectory;
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}
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}
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else
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{
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var fileUri = new Uri(Application.dataPath + "/../" + requestedDirectory);
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requestedDirectory = Uri.UnescapeDataString(referenceUri.MakeRelativeUri(fileUri).ToString());
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}
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// if the directory doesn't start with "Assets+Path.DirectorySeparatorChar"
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// then the terraindata will not end up in the assetdatabase, and not correctly be loaded
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// so force it to the correct location
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if (forceToAssets && (!requestedDirectory.StartsWith("Assets") || !requestedDirectory.StartsWith("Assets/")))
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requestedDirectory = "Assets";
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return requestedDirectory;
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}
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/// <summary>
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/// Reports if a directory is within the Project/Assets folder.
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/// Directory does not need to exist.
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/// </summary>
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/// <param name="requestedDirectory"></param>
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/// <returns></returns>
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internal static bool IsDirectoryWithinAssets(string requestedDirectory)
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{
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return GetProjectRelativeSaveDirectory(requestedDirectory, false) ==
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GetProjectRelativeSaveDirectory(requestedDirectory);
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}
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public static void ExportTerrainHeightsToRawFile(TerrainData terrainData, string path, Heightmap.Depth depth, bool flipVertical, ByteOrder byteOrder, Vector2 inputLevelsRange)
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{
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// trim off the extra 1 pixel, so we get a power of two sized texture
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#if UNITY_2019_3_OR_NEWER
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int heightmapWidth = terrainData.heightmapResolution - 1;
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int heightmapHeight = terrainData.heightmapResolution - 1;
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#else
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int heightmapWidth = terrainData.heightmapWidth - 1;
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int heightmapHeight = terrainData.heightmapHeight - 1;
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#endif
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float[,] heights = terrainData.GetHeights(0, 0, heightmapWidth, heightmapHeight);
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byte[] data = new byte[heightmapWidth * heightmapHeight * (int)depth];
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if (depth == Heightmap.Depth.Bit16)
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{
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float normalize = (1 << 16);
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for (int y = 0; y < heightmapHeight; ++y)
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{
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for (int x = 0; x < heightmapWidth; ++x)
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{
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int index = x + y * heightmapWidth;
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int srcY = flipVertical ? heightmapHeight - 1 - y : y;
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float remappedHeight = heights[srcY, x] * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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int height = Mathf.RoundToInt(remappedHeight * normalize);
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ushort compressedHeight = (ushort)Mathf.Clamp(height, 0, ushort.MaxValue);
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byte[] byteData = System.BitConverter.GetBytes(compressedHeight);
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if ((byteOrder == ByteOrder.Mac) == System.BitConverter.IsLittleEndian)
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{
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data[index * 2 + 0] = byteData[1];
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data[index * 2 + 1] = byteData[0];
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}
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else
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{
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data[index * 2 + 0] = byteData[0];
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data[index * 2 + 1] = byteData[1];
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}
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}
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}
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}
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else
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{
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float normalize = (1 << 8);
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for (int y = 0; y < heightmapHeight; ++y)
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{
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for (int x = 0; x < heightmapWidth; ++x)
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{
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int index = x + y * heightmapWidth;
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int srcY = flipVertical ? heightmapHeight - 1 - y : y;
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float remappedHeight = heights[y, x] * (inputLevelsRange.y - inputLevelsRange.x) + inputLevelsRange.x;
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int height = Mathf.RoundToInt(remappedHeight * normalize);
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byte compressedHeight = (byte)Mathf.Clamp(height, 0, byte.MaxValue);
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data[index] = compressedHeight;
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}
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}
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}
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FileStream fs = new FileStream((path + ".raw"), FileMode.Create);
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fs.Write(data, 0, data.Length);
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fs.Close();
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}
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public static Material GetHeightBlitMaterial()
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{
|
|
return new Material(Shader.Find("Hidden/TerrainTools/HeightBlit"));
|
|
}
|
|
|
|
public static void FlipTexture(Texture2D texture, bool isHorizontal)
|
|
{
|
|
Color[] originalPixels = texture.GetPixels();
|
|
Color[] flippedPixels = new Color[originalPixels.Length];
|
|
int width = texture.width;
|
|
int height = texture.height;
|
|
for (int y = 0; y < height; y++)
|
|
{
|
|
for (int x = 0; x < width; x++)
|
|
{
|
|
int flippedIndex = isHorizontal ? y * width + width - 1 - x : (height - 1) * width - y * width + x;
|
|
int originalIndex = y * width + x;
|
|
if (flippedIndex < 0)
|
|
continue;
|
|
flippedPixels[flippedIndex] = originalPixels[originalIndex];
|
|
}
|
|
}
|
|
texture.SetPixels(flippedPixels);
|
|
texture.Apply();
|
|
}
|
|
|
|
public static RenderPipeline GetRenderPipeline()
|
|
{
|
|
if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset == null)
|
|
{
|
|
return RenderPipeline.Default;
|
|
}
|
|
else if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset.GetType().FullName
|
|
== "UnityEngine.Rendering.HighDefinition.HDRenderPipelineAsset")
|
|
{
|
|
return RenderPipeline.HD;
|
|
}
|
|
else if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset.GetType().FullName
|
|
== "UnityEngine.Rendering.Universal.UniversalRenderPipelineAsset")
|
|
{
|
|
return RenderPipeline.Universal;
|
|
}
|
|
else if (UnityEngine.Rendering.GraphicsSettings.renderPipelineAsset.GetType().FullName
|
|
== "UnityEngine.Rendering.LWRP.LightweightRenderPipelineAsset")
|
|
{
|
|
return RenderPipeline.LW;
|
|
}
|
|
|
|
return RenderPipeline.Default;
|
|
}
|
|
}
|
|
}
|