78 lines
2.7 KiB
C#
78 lines
2.7 KiB
C#
using System.Collections.Generic;
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using System.Linq;
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using Assets.AnnotationPass;
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using Assets.Cities;
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using Assets.Common;
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using UnityEngine;
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namespace Assets.RenderPass
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{
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public class CityRenderer : IRenderer
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{
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private GameObject _cities;
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public CityRenderer(GameObject cities)
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{
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_cities = cities;
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}
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public void Render(Map map, Component component)
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{
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var cities = map.GetProperty<IEnumerable<City>>(LocateCitiesPass.CitiesProperty);
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var meshes = cities.Select(city => new CombineInstance { mesh = CreateCityMesh(city), transform = component.transform.localToWorldMatrix });
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var mesh = new Mesh();
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mesh.CombineMeshes(meshes.ToArray());
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_cities.GetComponent<MeshFilter>().sharedMesh = mesh;
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}
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private Mesh CreateCityMesh(City city)
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{
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List<Vector3> vertices = new List<Vector3>();
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List<Vector3> normals = new List<Vector3>();
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List<int> triangles = new List<int>();
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int start = 0, n = 0;
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foreach (var field in city.Fields)
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{
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start = vertices.Count;
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n = field.Boundary.Count;
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vertices.AddRange(field.Boundary.Select(p => p.ToVector3()));
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normals.AddRange(field.Boundary.Select(v => Vector3.up));
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triangles.AddRange(Triangulate(field).Select(x => x + start));
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start = vertices.Count;
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vertices.AddRange(field.Boundary.Select(p => p.ToVector3()));
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normals.AddRange(PointUtils.CalculateNormals(field.Boundary).Select(p => p.ToVector3()));
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vertices.AddRange(field.Boundary.Select(p => p.ToVector3() + Vector3.down * 25));
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normals.AddRange(PointUtils.CalculateNormals(field.Boundary).Select(p => p.ToVector3()));
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for (int i = 0; i < n; i++)
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{
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triangles.AddRange(new []{ start + i, start + n + i, start + n + (i + 1) % n });
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triangles.AddRange(new []{ start + i, start + n + (i + 1) % n, start + (i + 1) % n });
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}
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}
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return new Mesh
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{
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vertices = vertices.ToArray(),
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normals = normals.ToArray(),
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triangles = triangles.ToArray(),
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};
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}
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private static IEnumerable<int> Triangulate(CityField field)
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{
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return new Triangulator(field.Boundary.Select(p => new Vector2((float)p.x, (float)p.y)).ToArray()).Triangulate();
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}
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public void DrawGizmos(Map map, Component component)
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{
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}
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}
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} |