static bool TestAttributeLerp()
{
var mesh = new BMesh();
mesh.AddVertexAttribute(new AttributeDefinition("uv", AttributeBaseType.Float, 2));
mesh.AddVertexAttribute(new AttributeDefinition("mat", AttributeBaseType.Int, 1));
Vertex v0 = mesh.AddVertex(new Vector3(0, 0, 0));
Vertex v1 = mesh.AddVertex(new Vector3(0, 0, 0));
Vertex v2 = mesh.AddVertex(new Vector3(0, 0, 0));
v0.attributes["uv"] = new FloatAttributeValue(0.12f, 0.0f);
v2.attributes["uv"] = new FloatAttributeValue(0.33f, 1.0f);
v0.attributes["mat"] = new IntAttributeValue(0);
v2.attributes["mat"] = new IntAttributeValue(1);
BMeshOperators.AttributeLerp(mesh, v1, v0, v2, 0.4f);
var uv1 = v1.attributes["uv"] as FloatAttributeValue;
var mat1 = v1.attributes["mat"] as IntAttributeValue;
Debug.Assert(uv1.data.Length == 2 && uv1.data[0] == Mathf.Lerp(0.12f, 0.33f, 0.4f) && uv1.data[1] == 0.4f, "interpolate uv");
Debug.Assert(mat1.data.Length == 1 && mat1.data[0] == 0, "interpolate mat");
Debug.Log("TestBMeshOperators TestAttributeLerp passed.");
return(true);
}
static bool TestSubdivideQuad()
{
var mesh = new BMesh();
Vertex v0 = mesh.AddVertex(new Vector3(-1, 0, -1));
Vertex v1 = mesh.AddVertex(new Vector3(-1, 0, 1));
Vertex v2 = mesh.AddVertex(new Vector3(1, 0, 1));
Vertex v3 = mesh.AddVertex(new Vector3(1, 0, -1));
mesh.AddFace(v0, v1, v2, v3);
BMeshOperators.Subdivide(mesh);
Debug.Assert(mesh.vertices.Count == 9, "vertex count");
Debug.Assert(mesh.edges.Count == 12, "edge count");
Debug.Assert(mesh.loops.Count == 16, "loop count");
Debug.Assert(mesh.faces.Count == 4, "face count");
foreach (Face f in mesh.faces)
{
Debug.Assert(f.vertcount == 4, "faces are quads");
}
Debug.Log("TestBMeshOperators TestSubdivideQuad passed.");
return(true);
}
static bool TestSubdivideTris()
{
var mesh = new BMesh();
mesh.AddVertexAttribute(new AttributeDefinition("uv", AttributeBaseType.Float, 2));
Vertex v0 = mesh.AddVertex(new Vector3(-1, 0, -1));
Vertex v1 = mesh.AddVertex(new Vector3(-1, 0, 1));
Vertex v2 = mesh.AddVertex(new Vector3(1, 0, 1));
Vertex v3 = mesh.AddVertex(new Vector3(1, 0, -1));
Face f0 = mesh.AddFace(v0, v1, v2);
Face f1 = mesh.AddFace(v2, v1, v3);
foreach (var v in mesh.vertices)
{
v.attributes["uv"] = new FloatAttributeValue(v.point.x, v.point.z);
}
BMeshOperators.Subdivide(mesh);
Debug.Assert(mesh.vertices.Count == 11, "vertex count");
Debug.Assert(mesh.edges.Count == 16, "edge count");
Debug.Assert(mesh.loops.Count == 24, "loop count");
Debug.Assert(mesh.faces.Count == 6, "face count");
foreach (Face f in mesh.faces)
{
Debug.Assert(f.vertcount == 4, "faces are quads");
}
foreach (var v in mesh.vertices)
{
var uv = v.attributes["uv"] as FloatAttributeValue;
Debug.Assert(Mathf.Abs(uv.data[0] - v.point.x) < epsilon && Mathf.Abs(uv.data[1] - v.point.z) < epsilon, "attribute interpolation: " + uv.data[0] + " == " + v.point.x + " && " + uv.data[1] + " == " + v.point.z);
}
Debug.Log("TestBMeshOperators TestSubdivideTris passed.");
return(true);
}