36 lines
1.4 KiB
C#
36 lines
1.4 KiB
C#
|
using System;
|
||
|
|
using UnityEngine;
|
||
|
|
using UnityEngine.Rendering;
|
||
|
|
|
||
|
|
namespace CultMath.Unity;
|
||
|
|
|
||
|
|
public static class PlanetaryPatchMeshAdapter
|
||
|
|
{
|
||
|
|
public static Mesh CreateFaceMesh(PlanetaryCubeFace face, int cellsPerAxis, float radius = 1)
|
||
|
|
{
|
||
|
|
if (!float.IsFinite(radius) || radius <= 0) throw new ArgumentOutOfRangeException(nameof(radius));
|
||
|
|
var source = PlanetaryPatch.CreateFace(face, cellsPerAxis);
|
||
|
|
var vertices = new Vector3[source.Vertices.Length];
|
||
|
|
var normals = new Vector3[source.Vertices.Length];
|
||
|
|
var uv = new Vector2[source.Vertices.Length];
|
||
|
|
for (var i = 0; i < source.Vertices.Length; i++)
|
||
|
|
{
|
||
|
|
var direction = source.Vertices[i].UnitDirection;
|
||
|
|
var normal = new Vector3(direction.x, direction.y, direction.z);
|
||
|
|
vertices[i] = normal * radius;
|
||
|
|
normals[i] = normal;
|
||
|
|
uv[i] = new Vector2(source.Vertices[i].LocalCoordinate.x, source.Vertices[i].LocalCoordinate.y);
|
||
|
|
}
|
||
|
|
var mesh = new Mesh
|
||
|
|
{
|
||
|
|
name = $"CultMath Planetary {face} {cellsPerAxis}x{cellsPerAxis}",
|
||
|
|
indexFormat = vertices.Length > ushort.MaxValue ? IndexFormat.UInt32 : IndexFormat.UInt16,
|
||
|
|
vertices = vertices,
|
||
|
|
normals = normals,
|
||
|
|
uv = uv,
|
||
|
|
triangles = source.Indices,
|
||
|
|
};
|
||
|
|
mesh.RecalculateBounds();
|
||
|
|
return mesh;
|
||
|
|
}
|
||
|
|
}
|