void Start()
{
// some sample quad planes of various sizes and descriptions
{
var mqp = new QuadPlaneDef(2, 2);
GameObject go = MakeQuadPlane.Create(mqp);
go.transform.position = new Vector3(-3, 0, 0);
go.GetComponent <MeshRenderer>().material = mtl;
}
{
var mqp = new QuadPlaneDef(4, 10, new Vector3(3.0f, 1.0f, 4.0f));
// we'll back this one's texture coordinates a bit tighter
mqp.UVScale = Vector2.one * 3.0f;
GameObject go = MakeQuadPlane.Create(mqp);
go.transform.position = new Vector3(0, 0, 0);
go.GetComponent <MeshRenderer>().material = mtl;
}
{
var mqp = new QuadPlaneDef(40, 80, new Vector3(3.2f, 0.15f, 6.2f));
// we'll make this one "interesting" with intermingling sine waves
mqp.HeightFunction = (v2) =>
{
// these constants control how fast the
// sine wave repeats in each axis
return(Mathf.Sin(v2.x * 5.0f) + Mathf.Sin(v2.x * 2.0f + v2.y * 15.0f));
};
GameObject go = MakeQuadPlane.Create(mqp);
go.transform.position = new Vector3(4, 0, 0);
go.GetComponent <MeshRenderer>().material = mtl;
}
}
public static GameObject Create(QuadPlaneDef qpd)
{
GameObject go = new GameObject("MakeQuadPlane:" + qpd.ToString());
Mesh mesh = new Mesh();
using (var vh = new VertexHelper())
{
for (int j = 0; j < qpd.zCells; j++)
{
for (int i = 0; i < qpd.xCells; i++)
{
Vector2 pos = new Vector2(
(i * qpd.WorldSize.x) / (qpd.xCells - 1),
(j * qpd.WorldSize.z) / (qpd.zCells - 1));
float height = 0.0f;
if (qpd.HeightFunction != null)
{
height = qpd.HeightFunction(pos);
}
height *= qpd.WorldSize.y;
UIVertex vtx = new UIVertex();
vtx.position = new Vector3(pos.x, height, pos.y);
vtx.uv0 = new Vector2(
(i / (qpd.xCells - 1.0f)) * qpd.UVScale.x,
(j / (qpd.zCells - 1.0f)) * qpd.UVScale.y);
vh.AddVert(vtx);
}
}
for (int j = 0; j < qpd.zCells - 1; j++)
{
for (int i = 0; i < qpd.xCells - 1; i++)
{
int n = j * qpd.xCells + i;
vh.AddTriangle(n, n + qpd.xCells, n + 1);
vh.AddTriangle(n + 1, n + qpd.xCells, n + qpd.xCells + 1);
}
}
vh.FillMesh(mesh);
}
mesh.RecalculateBounds();
mesh.RecalculateNormals();
MeshFilter mf = go.AddComponent <MeshFilter>();
mf.mesh = mesh;
MeshRenderer mr = go.AddComponent <MeshRenderer>();
return(go);
}
