public void UpdateUVs () {
float u = RegionU, v = RegionV, width = RegionU2 - RegionU, height = RegionV2 - RegionV;
float[] regionUVs = this.regionUVs;
if (this.uvs == null || this.uvs.Length != regionUVs.Length) this.uvs = new float[regionUVs.Length];
float[] uvs = this.uvs;
if (RegionRotate) {
for (int i = 0, n = uvs.Length; i < n; i += 2) {
uvs[i] = u + regionUVs[i + 1] * width;
uvs[i + 1] = v + height - regionUVs[i] * height;
}
} else {
for (int i = 0, n = uvs.Length; i < n; i += 2) {
uvs[i] = u + regionUVs[i] * width;
uvs[i + 1] = v + regionUVs[i + 1] * height;
}
}
}