74 lines
2.1 KiB
C#
74 lines
2.1 KiB
C#
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#if GRIFFIN
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using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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namespace Pinwheel.Griffin.Rendering
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{
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public static class GBillboardUtilities
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{
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private static Dictionary<BillboardAsset, Mesh> billboardMeshes;
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private static Dictionary<BillboardAsset, Mesh> BillboardMeshes
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{
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get
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{
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if (billboardMeshes == null)
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{
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billboardMeshes = new Dictionary<BillboardAsset, Mesh>();
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}
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return billboardMeshes;
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}
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}
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public static Mesh GetMesh(BillboardAsset billboard)
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{
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if (!BillboardMeshes.ContainsKey(billboard))
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{
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BillboardMeshes.Add(billboard, null);
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}
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if (BillboardMeshes[billboard] == null)
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{
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Mesh m = CreateMesh(billboard);
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BillboardMeshes[billboard] = m;
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}
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return BillboardMeshes[billboard];
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}
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private static Mesh CreateMesh(BillboardAsset billboard)
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{
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Mesh m = new Mesh();
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Vector2[] uvs = billboard.GetVertices();
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Vector3[] vertices = new Vector3[billboard.vertexCount];
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for (int i = 0; i < vertices.Length; ++i)
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{
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vertices[i] = new Vector3(
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(uvs[i].x - 0.5f) * billboard.width,
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uvs[i].y * billboard.height + billboard.bottom,
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0);
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}
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ushort[] tris = billboard.GetIndices();
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int[] trisInt = new int[tris.Length];
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for (int i = 0; i < trisInt.Length; ++i)
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{
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trisInt[i] = tris[i];
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}
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m.vertices = vertices;
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m.uv = uvs;
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m.triangles = trisInt;
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m.name = billboard.name;
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return m;
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}
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public static void CleanUp()
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{
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foreach (Mesh m in BillboardMeshes.Values)
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{
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GUtilities.DestroyObject(m);
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}
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BillboardMeshes.Clear();
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}
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}
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}
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#endif
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