void UpdateSpriteMesh(bool isClipping, Vector3 cameraPos, float radius)
{
int triangles = 0;
int priCount = getAndSortPrimitives(ref triangles, isClipping, cameraPos, radius);
lastCommitSpriteConnt = priCount;
lastCommitTriangleCount = triangles;
if (priCount == 0)
{
if (renderMesh != null && renderMesh.vertexCount > 0)
{
renderMesh.subMeshCount = 0;
}
return;
}
//set vertices, uvs, colors
int l = priCount * 4;
int arrlen = _vertices.Length;
if (l > arrlen || l < arrlen >> 1)
{
if (l > arrlen)
{
arrlen = l + 128;
}
else if (l < arrlen >> 1)
{
arrlen = arrlen >> 1;
}
_vertices = new Vector3[arrlen];
_uvs = new Vector2[arrlen];
_colors = new Color[arrlen];
}
renderMesh.subMeshCount = 0;
System.Array.Copy(vertices, _vertices, l);
System.Array.Copy(UVs, _uvs, l);
System.Array.Copy(colors, _colors, l);
renderMesh.vertices = _vertices;
renderMesh.colors = _colors;
renderMesh.uv = _uvs;
int c = 0;
//set submesh count
renderMesh.subMeshCount = subMeshCount;
Material[] mats = new Material[subMeshCount];
//set triangles
for (int i = 0; i < subMeshCount; i++)
{
SubMeshInfo info = subMeshs[i];
int len = info.triangleCnt * 3;
//get closest array
FixedArrayAllocator <int> .FixedArrayInfo arrayInfo = FixedArrayAllocator <int> .GetArray(len);
//copy index
System.Array.Copy(indices, info.indexBase, arrayInfo.array, 0, len);
//clean last
System.Array.Clear(arrayInfo.array, len, arrayInfo.fixedSize - len);
//set triangle list
renderMesh.SetTriangles(arrayInfo.array, i);
//set submesh material
mats[i] = info.mat;
c += arrayInfo.fixedSize;
}
renderer.materials = mats;
OnCommitEnd();
}
internal void Init(int maxPrimitiveCount)
{
renderer.materials = new Material[0];
//init component
meshFilter = GetComponent <MeshFilter>();
meshFilter.sharedMesh = new Mesh();
renderMesh = meshFilter.sharedMesh;
this.maxPrimitiveCount = maxPrimitiveCount;
int count = maxPrimitiveCount;
if (vertices == null || count > vertices.Length)
{
//init vertices, uv, color
vertices = new Vector3[count * 4];
}
if (UVs == null || count > UVs.Length)
{
UVs = new Vector2[count * 4];
}
if (colors == null || count > colors.Length)
{
colors = new Color[count * 4];
}
if (indices == null || count > indices.Length)
{
//init index with triangle list
indices = new int[count * 6];
for (int i = 0; i < count; i++)
{
int srcIdxBase = i * 4;
int idxBase = i * 6;
indices[idxBase + 0] = srcIdxBase + 0;
indices[idxBase + 1] = srcIdxBase + 1;
indices[idxBase + 2] = srcIdxBase + 2;
indices[idxBase + 3] = srcIdxBase + 0;
indices[idxBase + 4] = srcIdxBase + 2;
indices[idxBase + 5] = srcIdxBase + 3;
}
}
//init submesh
subMeshCount = 0;
if (subMeshs == null)
{
subMeshs = new SubMeshInfo[512];
for (int i = 0, l = subMeshs.Length; i < l; i++)
{
subMeshs[i] = new SubMeshInfo();
}
}
if (_primitives == null || count > _primitives.Length)
{
//init primitive pool
_primitives = new SpritePrimitive[count];
}
if (sortKeys == null || count > sortKeys.Length)
{
sortKeys = new int[count];
}
FixedArrayAllocator <int> .AddArray(1, 8, 6, 2);
FixedArrayAllocator <int> .AddArray(256 * 6, count * 6, 256 * 6);
vertices[0] = new Vector3(-1000000f, -1000000f, -100000f);
vertices[1] = new Vector3(1000000f, -1000000f, -100000f);
vertices[2] = new Vector3(-1000000f, 1000000f, 100000f);
vertices[3] = new Vector3(1000000f, 1000000f, 100000f);
renderMesh.vertices = vertices;
renderMesh.uv = UVs;
renderMesh.colors = colors;
renderMesh.triangles = new int[] { 0, 1, 2, 1, 2, 3 };
renderMesh.RecalculateBounds();
isInit = true;
}
