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Add LOD to heightmaps

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This commit is contained in:
Nick 2022-07-14 20:04:15 -04:00
parent 0be598b4e0
commit 093200c606
2 changed files with 49 additions and 15 deletions
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62
NewHorizons/Builder/Body/HeightMapBuilder.cs
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@ -1,5 +1,7 @@
using NewHorizons.Builder.Body.Geometry;
using NewHorizons.External.Configs;
using NewHorizons.External.Modules;
using NewHorizons.Handlers;
using NewHorizons.Utility;
using OWML.Common;
using System;
@ -11,7 +13,7 @@ namespace NewHorizons.Builder.Body
{
public static Shader PlanetShader;
public static void Make(GameObject planetGO, Sector sector, HeightMapModule module, IModBehaviour mod, int resolution)
public static void Make(GameObject planetGO, Sector sector, HeightMapModule module, IModBehaviour mod, int resolution, bool useLOD = false)
{
var deleteHeightmapFlag = false;
@ -51,24 +53,35 @@ namespace NewHorizons.Builder.Body
GameObject cubeSphere = new GameObject("CubeSphere");
cubeSphere.SetActive(false);
cubeSphere.transform.parent = sector?.transform ?? planetGO.transform;
cubeSphere.transform.rotation = Quaternion.Euler(90, 0, 0);
Vector3 stretch = module.stretch != null ? (Vector3)module.stretch : Vector3.one;
Mesh mesh = CubeSphere.Build(resolution, heightMap, module.minHeight, module.maxHeight, stretch);
cubeSphere.AddComponent<MeshFilter>();
cubeSphere.GetComponent<MeshFilter>().mesh = mesh;
if (PlanetShader == null) PlanetShader = Main.NHAssetBundle.LoadAsset<Shader>("Assets/Shaders/SphereTextureWrapper.shader");
var cubeSphereMR = cubeSphere.AddComponent<MeshRenderer>();
var material = new Material(PlanetShader);
cubeSphereMR.material = material;
material.name = textureMap.name;
material.mainTexture = textureMap;
Vector3 stretch = module.stretch != null ? (Vector3)module.stretch : Vector3.one;
var level1 = MakeLODTerrain(cubeSphere, heightMap, textureMap, module.minHeight, module.maxHeight, resolution, stretch);
var cubeSphereMC = cubeSphere.AddComponent<MeshCollider>();
cubeSphereMC.sharedMesh = mesh;
cubeSphereMC.sharedMesh = level1.gameObject.GetComponent<MeshFilter>().mesh;
if (useLOD)
{
var level2Res = (int)Mathf.Clamp(resolution / 2f, 35, 100);
var level2 = MakeLODTerrain(cubeSphere, heightMap, textureMap, module.minHeight, module.maxHeight, level2Res, stretch);
var LODGroup = cubeSphere.AddComponent<LODGroup>();
LODGroup.size = module.maxHeight;
LODGroup.SetLODs(new LOD[]
{
new LOD(0.5f, new Renderer[] { level1 }),
new LOD(0.33f, new Renderer[] { level2 })
});
level1.transform.name += "1";
level2.transform.name += "2";
LODGroup.RecalculateBounds();
}
var cubeSphereSC = cubeSphere.AddComponent<SphereCollider>();
cubeSphereSC.radius = Mathf.Min(module.minHeight, module.maxHeight);
@ -86,5 +99,26 @@ namespace NewHorizons.Builder.Body
// Now that we've made the mesh we can delete the heightmap texture
if (deleteHeightmapFlag) ImageUtilities.DeleteTexture(mod, module.heightMap, heightMap);
}
public static MeshRenderer MakeLODTerrain(GameObject root, Texture2D heightMap, Texture2D textureMap, float minHeight, float maxHeight, int resolution, Vector3 stretch)
{
var LODCubeSphere = new GameObject("LODCubeSphere");
Mesh mesh = CubeSphere.Build(resolution, heightMap, minHeight, maxHeight, stretch);
LODCubeSphere.AddComponent<MeshFilter>();
LODCubeSphere.GetComponent<MeshFilter>().mesh = mesh;
var cubeSphereMR = LODCubeSphere.AddComponent<MeshRenderer>();
var material = new Material(PlanetShader);
cubeSphereMR.material = material;
material.name = textureMap.name;
material.mainTexture = textureMap;
LODCubeSphere.transform.parent = root.transform;
LODCubeSphere.transform.localPosition = Vector3.zero;
return cubeSphereMR;
}
}
}

2
NewHorizons/Handlers/PlanetCreationHandler.cs
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@ -469,7 +469,7 @@ namespace NewHorizons.Handlers
// resolution = tris on edge per face
// divide by 4 to account for all the way around the equator
var res = body.Config.HeightMap.resolution / 4;
HeightMapBuilder.Make(go, sector, body.Config.HeightMap, body.Mod, res);
HeightMapBuilder.Make(go, sector, body.Config.HeightMap, body.Mod, res, true);
}
if (body.Config.ProcGen != null)