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