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81 行
1.9 KiB
81 行
1.9 KiB
// Based on: https://catlikecoding.com/unity/tutorials/advanced-rendering/flat-and-wireframe-shading/
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using UnityEngine;
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public class BarycentricDataBuilder : MonoBehaviour
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{
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private Mesh m_Mesh;
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void Start()
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{
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//GenerateBarycentricData();
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}
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public void GenerateData(Mesh sharedMesh)
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{
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SplitMesh(sharedMesh);
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SetVertexColors(sharedMesh);
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}
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void GenerateBarycentricData()
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{
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m_Mesh = GetComponent<MeshFilter>().sharedMesh;
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SplitMesh(m_Mesh);
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SetVertexColors(m_Mesh);
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}
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void SetVertexColors(Mesh mesh)
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{
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Color[] colorCoords = new[]
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{
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new Color(1, 0, 0),
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new Color(0, 1, 0),
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new Color(0, 0, 1),
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};
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Color32[] vertexColors = new Color32[mesh.vertexCount];
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for (int i = 0; i < vertexColors.Length; i += 3)
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{
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vertexColors[i] = colorCoords[0];
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vertexColors[i + 1] = colorCoords[1];
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vertexColors[i + 2] = colorCoords[2];
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}
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mesh.colors32 = vertexColors;
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}
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void SplitMesh(Mesh mesh)
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{
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int[] triangles = mesh.triangles;
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Vector3[] verts = mesh.vertices;
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Vector3[] normals = mesh.normals;
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//Vector2[] uvs = mesh.uv;
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Vector3[] newVerts;
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Vector3[] newNormals;
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//Vector2[] newUvs;
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int n = triangles.Length;
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newVerts = new Vector3[n];
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newNormals = new Vector3[n];
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//newUvs = new Vector2[n];
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for (int i = 0; i < n; i++)
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{
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newVerts[i] = verts[triangles[i]];
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newNormals[i] = normals[triangles[i]];
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//if (uvs.Length > 0)
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//{
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// newUvs[i] = uvs[triangles[i]];
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//}
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triangles[i] = i;
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}
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mesh.vertices = newVerts;
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mesh.normals = newNormals;
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//mesh.uv = newUvs;
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mesh.triangles = triangles;
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}
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}
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