Script for deleting the automatically generated base mesh for buildings or building sub meshes.

BuildingBaseMeshDelete.cs

// Deletes automatically generated base mesh based on vertex colors.
// Changes shader to NoBase, enables noBase boolean, raises or lowers vertices too close to 0.
var subMesh = -1; // sub mesh id, order as in ui, starting from 0 (-1 means main building mesh)

var asset = ToolsModifierControl.toolController.m_editPrefabInfo as BuildingInfo; 
var m = asset.m_mesh; var shader = Shader.Find("Custom/Buildings/Building/NoBase"); var newVertCount = 0;
if(subMesh >= 0) { m = asset.m_subMeshes[subMesh].m_subInfo.m_mesh; 
	if(asset.m_subMeshes[subMesh].m_subInfo.m_material != null) asset.m_subMeshes[subMesh].m_subInfo.m_material.shader = shader;
	if(asset.m_subMeshes[subMesh].m_subInfo.m_lodMaterial != null) asset.m_subMeshes[subMesh].m_subInfo.m_lodMaterial.shader = shader;
	asset.m_subMeshes[subMesh].m_subInfo.m_noBase = true; } 
else { if(asset.m_material != null) asset.m_material.shader = shader;
	if(asset.m_lodMaterial != null) asset.m_lodMaterial.shader = shader;
	asset.m_noBase = true; } 
if(m.colors.Length != 0) { for(var i = 0; i < m.colors.Length; i++) if(m.colors[i] == Color.white && newVertCount == 0) newVertCount = i;
if(newVertCount != 0) { var triCount = m.triangles.Length; var newTriCount = triCount; for(var i = 0; i < triCount; i += 3) 
if(m.triangles[i] >= newVertCount || m.triangles[i+1] >= newVertCount || m.triangles[i+2] >= newVertCount) newTriCount-=3;
var newTris = new Int32[newTriCount]; for(var i = 0; i < triCount; i += 3) {
	if(m.triangles[i] >= newVertCount || m.triangles[i+1] >= newVertCount || m.triangles[i+2] >= newVertCount) continue;
	newTris[i] = m.triangles[i]; newTris[i+1] = m.triangles[i+1]; newTris[i+2] = m.triangles[i+2]; }
var newVerts = new Vector3[newVertCount]; for(var i = 0; i < newVertCount; i++) {
	if(m.vertices[i].y < 0.06f && m.vertices[i].y > -0.06f)	{
		if(m.vertices[i].y > 0) newVerts[i] = new Vector3(m.vertices[i].x, 0.06f, m.vertices[i].z);
		else newVerts[i] = new Vector3(m.vertices[i].x, -0.06f, m.vertices[i].z); }
	else newVerts[i] = m.vertices[i]; }
var newNormals = new Vector3[newVertCount]; for(var i = 0; i < newVertCount; i++) newNormals[i] = m.normals[i];
var newTangents = new Vector4[newVertCount]; for(var i = 0; i < newVertCount; i++) newTangents[i] = m.tangents[i];
var newColors = new Color[newVertCount]; for(var i = 0; i < newVertCount; i++) newColors[i] = m.colors[i];
var newColors32 = new Color32[newVertCount]; for(var i = 0; i < newVertCount; i++) newColors32[i] = m.colors32[i];
m.triangles = newTris; m.vertices = newVerts; m.normals = newNormals; m.tangents = newTangents; m.colors = newColors; } }