// Creates acoustic meshes from game objects and builds a mapping from GUIDs of the Unity
// Materials used by these game objects to the generated acoustic meshes.
private void BuildUnityMaterialData(MeshRenderer[] meshRenderers,
List <string>[] guidsForMeshRenderers,
Shader surfaceMaterialShader)
{
unityMaterialAcousticMeshDataFromGuid.Clear();
for (int meshRendererIndex = 0; meshRendererIndex < meshRenderers.Length; ++meshRendererIndex)
{
var meshRenderer = meshRenderers[meshRendererIndex];
var gameObject = meshRenderer.gameObject;
// Skip if the mesh renderer does not have Unity Materials.
var unityMaterials = meshRenderer.sharedMaterials;
if (unityMaterials.Length == 0)
{
continue;
}
// Exclude inactive game objects.
if (!gameObject.activeInHierarchy)
{
continue;
}
// Generate an acoustic mesh for the game object. Skip if failed.
var acousticMesh = ResonanceAudioAcousticMesh.GenerateFromMeshFilter(
gameObject.GetComponent <MeshFilter>(), surfaceMaterialShader);
if (acousticMesh == null)
{
Debug.LogError("acousticMesh == null");
continue;
}
// Each Unity Material of a mesh renderer correspondes to a sub-mesh.
var guidsForMeshRenderer = guidsForMeshRenderers[meshRendererIndex];
for (int subMeshIndex = 0; subMeshIndex < unityMaterials.Length; ++subMeshIndex)
{
// Find the GUID that identifies this Unity Material.
var unityMaterial = unityMaterials[subMeshIndex];
string guid = guidsForMeshRenderer[subMeshIndex];
// If this guid is not mapped to a surface material yet, map it to the default surface
// material.
if (!surfaceMaterialFromGuid.ContainsKey(guid))
{
surfaceMaterialFromGuid.Add(guid, defaultSurfaceMaterial);
}
if (!unityMaterialAcousticMeshDataFromGuid.ContainsKey(guid))
{
unityMaterialAcousticMeshDataFromGuid[guid] = new UnityMaterialAcousticMeshData();
}
UnityMaterialAcousticMeshData data = unityMaterialAcousticMeshDataFromGuid[guid];
data.unityMaterial = unityMaterial;
data.acousticMeshes.Add(acousticMesh);
data.subMeshIndices.Add(subMeshIndex);
}
}
}
// If |guid| is not mapped to a surface material yet, map it to the default surface material.
public void AddDefaultMaterialIfGuidUnmapped(string guid)
{
if (!surfaceMaterialFromGuid.ContainsKey(guid))
{
surfaceMaterialFromGuid.Add(guid, defaultSurfaceMaterial);
}
}