/// <summary>
/// 通过天空盒方式生成球谐光数据
/// </summary>
/// <param name="cubeTex"></param>
/// <param name="rotate"></param>
/// <returns></returns>
public static SHData GenSHBySkyBox(Texture cubeTex, float rotate)
{
AmbientMode oMode = RenderSettings.ambientMode;
RenderSettings.ambientMode = AmbientMode.Skybox;
Material mSky = new Material(Shader.Find("Skybox/Cubemap"));
mSky.SetTexture("_Tex", cubeTex);
mSky.SetFloat("_Rotation", rotate);
Material oldSky = RenderSettings.skybox;
RenderSettings.skybox = mSky;
DynamicGI.UpdateEnvironment();
SphericalHarmonicsL2 sh = new SphericalHarmonicsL2();
LightProbes.GetInterpolatedProbe(Vector3.zero, new Renderer(), out sh);
SHData retData = CreateInstance <SHData>();
retData.Init(sh);
RenderSettings.skybox = oldSky;
RenderSettings.ambientMode = oMode;
DynamicGI.UpdateEnvironment();
DestroyImmediate(mSky);
return(retData);
}
/// <summary>
/// 使用三色渐变模式生成球谐光数据
/// </summary>
/// <param name="sky"></param>
/// <param name="equator"></param>
/// <param name="ground"></param>
/// <returns></returns>
public static SHData GenSHByTriLight(Color sky, Color equator, Color ground)
{
Color oSkyColor, oEquatorColor, oGroundColor;
AmbientMode oMode = RenderSettings.ambientMode;
RenderSettings.ambientMode = AmbientMode.Trilight;
oSkyColor = RenderSettings.ambientSkyColor;
oEquatorColor = RenderSettings.ambientEquatorColor;
oGroundColor = RenderSettings.ambientGroundColor;
RenderSettings.ambientSkyColor = sky;
RenderSettings.ambientEquatorColor = equator;
RenderSettings.ambientGroundColor = ground;
DynamicGI.UpdateEnvironment();
SphericalHarmonicsL2 sh = new SphericalHarmonicsL2();
LightProbes.GetInterpolatedProbe(Vector3.zero, new Renderer(), out sh);
SHData retData = CreateInstance <SHData>();
retData.Init(sh);
RenderSettings.ambientMode = oMode;
RenderSettings.ambientSkyColor = oSkyColor;
RenderSettings.ambientEquatorColor = oEquatorColor;
RenderSettings.ambientGroundColor = oGroundColor;
DynamicGI.UpdateEnvironment();
return(retData);
}
void OnGUI()
{
_aType = (AmbientType)EditorGUILayout.EnumPopup("AmbientType", _aType);
switch (_aType)
{
case AmbientType.SkyBox:
_map = (Cubemap)EditorGUILayout.ObjectField("EnvTex: ", _map, typeof(Cubemap), false);
_rotate = EditorGUILayout.Slider("EnvTexRotate", _rotate, 0, 360);
if (GUILayout.Button("Generate!"))
{
_shData = SHLightGeneratorLib.GenSHBySkyBox(_map, _rotate);
}
break;
case AmbientType.TriLight:
_skyColor = EditorGUILayout.ColorField("Sky", _skyColor);
_equatorColor = EditorGUILayout.ColorField("Equator", _equatorColor);
_groundColor = EditorGUILayout.ColorField("Ground", _groundColor);
if (GUILayout.Button("Generate!"))
{
_shData = SHLightGeneratorLib.GenSHByTriLight(_skyColor, _equatorColor, _groundColor);
}
break;
}
EditorGUILayout.Space();
if (_shData)
{
GUILayout.Label("SHAr: " + _shData.SHAr);
GUILayout.Label("SHAg: " + _shData.SHAg);
GUILayout.Label("SHAb: " + _shData.SHAb);
GUILayout.Label("SHBr: " + _shData.SHBr);
GUILayout.Label("SHBg: " + _shData.SHBg);
GUILayout.Label("SHBb: " + _shData.SHBb);
GUILayout.Label("SHC: " + _shData.SHC);
if (GUILayout.Button("SaveSHData"))
{
string path = EditorUtility.SaveFilePanel("SaveSHData", Application.dataPath, "SHData", "asset");
if (!string.IsNullOrEmpty(path))
{
if (!path.Contains(Application.dataPath))
{
Debug.LogError("Invalid Path");
return;
}
path = "Assets" + path.Replace(Application.dataPath, "");
AssetDatabase.CreateAsset(_shData, path);
Selection.activeObject = _shData;
}
}
}
}
