koobas.hobune.stream
Making a reference to specific vertices so i can manipulate them after used Mesh.CombineMesh
Im using Mesh.CombineMeshes with cube meshes to create a single Mesh for performance reasons.
When i assining the single meshes to the CombineInstance, is it possible to create a reference to the Mesh, so i can changing there values to recalculate or deleting single parts out of it?
CombineInstance[] combine = new CombineInstance[GameObjectArray.lenght];
for (int i = 0; i < GameObjectArray.lenght; i++)
{
MeshFilter mF = GameObjectArray[i].GetComponent<MeshFilter>();
combine[meshCount].mesh = mF.mesh;
combine[meshCount].transform = GameObjectArray[i].transform.localToWorldMatrix;
// can i somewhere here create a reference in any way to change single parts of the mesh afterwards
GameObject.Destroy(GameObjectArray[i]);
}
Mesh mesh = mesh.CombineMeshes(combine);
Best Answer
What would probably work is to count the vertices in each source mesh and add them to get the start index of vertices in the destination mesh.
like this:
CombineInstance[] combine = new CombineInstance[GameObjectArray.lenght];
int[] vertexIndices = new int[ameObjectArray.lenght];
int vertexIndex = 0;
for (int i = 0; i < GameObjectArray.lenght; i++)
{
MeshFilter mF = GameObjectArray[i].GetComponent<MeshFilter>();
combine[meshCount].mesh = mF.mesh;
combine[meshCount].transform = GameObjectArray[i].transform.localToWorldMatrix;
vertexIndices = vertexIndex;
vertexIndex += mf.mesh.vertices.Length;
GameObject.Destroy(GameObjectArray[i]);
}
Mesh mesh = mesh.CombineMeshes(combine);
Then for each source mesh, you can edit the vertices at vertexIndices[i] in the destination Mesh.
Thanks for the answer! I will try this as soon as possible and tell you about my results. :)
