// Given a face, splits it into a uniform grid and extrudes each grid face
// out and back in again, making an exhaust shape.
private void AddExhaustToFace(GenMesh genmesh, GenMeshFace faceForExhaust)
{
// The more square the face is, the more grid divisions it might have
var num_cuts = Random.Range(1, (int)(4 - faceForExhaust.AspectRatio));
var result = genmesh.Subdivide(faceForExhaust, num_cuts);
var exhaust_length = Random.Range(0.1f, 0.2f);
var scaleOuter = 1f / Random.Range(1.3f, 1.6f);
var scale_inner = 1f / Random.Range(1.05f, 1.1f);
for (var i = 0; i < result.Count(); i++)
{
var face = result[i];
face.MaterialIndex = 2;// Material.hull_dark;
face = ExtrudeFace(genmesh, face, exhaust_length);
ScaleFace(genmesh, face, scaleOuter, scaleOuter, scaleOuter);
face = ExtrudeFace(genmesh, face, 0);
ScaleFace(genmesh, face, scaleOuter * 0.9f, scaleOuter * 0.9f, scaleOuter * 0.9f);
var extruded_face_list = new List <GenMeshFace>();
face = ExtrudeFace(genmesh, face, -exhaust_length * 0.9f, extruded_face_list);
foreach (var extruded_face in extruded_face_list)
{
extruded_face.MaterialIndex = 3;// Material.exhaust_burn
}
ScaleFace(genmesh, face, scale_inner, scale_inner, scale_inner);
}
}
private void AddGridToFace(GenMesh genmesh, GenMeshFace fac)
{
var result = genmesh.Subdivide(fac, Random.Range(2, 4));
var gridLength = Random.Range(0.025f, 0.15f);
var scale = 0.8f;
for (var i = 0; i < result.Length; i++)
{
var face = result[i];
var materialIndex = Random.value > 0.5f ? 1 /*Material.hull_lights*/ : 4 /*Material.hull*/;
var extrudedFaceList = new List <GenMeshFace>();
face = ExtrudeFace(genmesh, face, gridLength, extrudedFaceList);
foreach (var f in extrudedFaceList)
{
if (Mathf.Abs(face.Normal.z) < 0.707) // # side face
{
f.MaterialIndex = materialIndex;
}
}
ScaleFace(genmesh, face, scale, scale, scale);
}
}