public static bool NeedUVGeneration(ChiselModel model)
{
haveUVsToUpdate = false;
#if UNITY_EDITOR
if (!model)
{
return(false);
}
var staticFlags = UnityEditor.GameObjectUtility.GetStaticEditorFlags(model.gameObject);
if ((staticFlags & UnityEditor.StaticEditorFlags.LightmapStatic) != UnityEditor.StaticEditorFlags.LightmapStatic)
{
return(false);
}
for (int i = 0; i < model.generatedMeshes.Length; i++)
{
var generatedMesh = model.generatedMeshes[i];
// Avoid light mapping multiple times, when the same mesh is used on multiple MeshRenderers
if (!ChiselSharedUnityMeshManager.HasLightmapUVs(generatedMesh.sharedMesh))
{
return(true);
}
}
#endif
return(false);
}
private static void GenerateLightmapUVsForInstance(ChiselModel model, ChiselRenderComponents renderComponents, Mesh generatedMesh)
{
// Avoid light mapping multiple times, when the same mesh is used on multiple MeshRenderers
if (ChiselSharedUnityMeshManager.HasLightmapUVs(generatedMesh))
{
return;
}
if (renderComponents == null ||
!renderComponents.meshFilter ||
!renderComponents.meshRenderer)
{
return;
}
var uvSettings = model.UVGenerationSettings;
var param = new UnityEditor.UnwrapParam();
UnityEditor.UnwrapParam.SetDefaults(out param);
param.angleError = Mathf.Clamp(uvSettings.angleError, SerializableUnwrapParam.minAngleError, SerializableUnwrapParam.maxAngleError);
param.areaError = Mathf.Clamp(uvSettings.areaError, SerializableUnwrapParam.minAreaError, SerializableUnwrapParam.maxAreaError);
param.hardAngle = Mathf.Clamp(uvSettings.hardAngle, SerializableUnwrapParam.minHardAngle, SerializableUnwrapParam.maxHardAngle);
param.packMargin = Mathf.Clamp(uvSettings.packMarginPixels, SerializableUnwrapParam.minPackMargin, SerializableUnwrapParam.maxPackMargin) / 256.0f;
var oldVertices = generatedMesh.vertices;
if (oldVertices.Length == 0)
{
return;
}
// TODO: can we avoid creating a temporary Mesh? if not; make sure CSGSharedUnityMeshManager is handled correctly
var oldUV = generatedMesh.uv;
var oldNormals = generatedMesh.normals;
var oldTangents = generatedMesh.tangents;
var oldTriangles = generatedMesh.triangles;
var tempMesh = new Mesh
{
vertices = oldVertices,
normals = oldNormals,
uv = oldUV,
tangents = oldTangents,
triangles = oldTriangles
};
var lightmapGenerationTime = UnityEditor.EditorApplication.timeSinceStartup;
UnityEditor.Unwrapping.GenerateSecondaryUVSet(tempMesh, param);
lightmapGenerationTime = UnityEditor.EditorApplication.timeSinceStartup - lightmapGenerationTime;
// TODO: make a nicer text here
Debug.Log("Generating lightmap UVs (by Unity) for the mesh '" + generatedMesh.name + "' of the Model named \"" + model.name + "\"\n" +
"\tUV generation in " + (lightmapGenerationTime * 1000) + " ms\n", model);
// Modify the original mesh, since it is shared
generatedMesh.uv2 = tempMesh.uv2; // static lightmaps
generatedMesh.uv3 = tempMesh.uv3; // real-time lightmaps
ChiselSharedUnityMeshManager.SetHasLightmapUVs(generatedMesh, true);
renderComponents.meshFilter.sharedMesh = null;
renderComponents.meshFilter.sharedMesh = generatedMesh;
UnityEditor.SceneManagement.EditorSceneManager.MarkSceneDirty(model.gameObject.scene);
}