public void Generate(Texture2D texture, Rect rect, float scale)
{
currentScale = scale;
m_width = (int)rect.width;
m_heigth = (int)rect.height;
int i = 0;
var xStart = (int)rect.x;
var yStart = (int)rect.y;
var tmpTexture = new Texture2D(m_width, m_heigth, TextureFormat.ARGB32, true);
#if UNITY_EDITOR
var imp = (UnityEditor.TextureImporter)UnityEditor.AssetImporter.GetAtPath(UnityEditor.AssetDatabase.GetAssetPath(texture)) as UnityEditor.TextureImporter;
if (imp != null && !imp.isReadable)
{
imp.isReadable = true;
imp.SaveAndReimport();
}
#endif
for (int y = 0; y < m_heigth; y++)
{
for (int x = 0; x < m_width; x++)
{
tmpTexture.SetPixel(x, y, texture.GetPixel(xStart + x, yStart + y));
i++;
}
}
tmpTexture.Apply();
if (scale < 1)
{
m_width = (int)(m_width * scale);
m_heigth = (int)(m_heigth * scale);
if (texture.filterMode == FilterMode.Point)
{
TextureResizing.Point(tmpTexture, m_width, m_heigth);
}
else
{
TextureResizing.Bilinear(tmpTexture, m_width, m_heigth);
}
}
List <Point> list = new List <Point>(m_width * m_heigth);
for (int y = 0; y < m_heigth; y++)
{
for (int x = 0; x < m_width; x++)
{
var p = tmpTexture.GetPixel(x, y);
if (p.a > 0)
{
var point = new Point(x, y, tmpTexture.GetPixel(x, y));
list.Add(point);
}
}
}
m_points = list.ToArray();
#if UNITY_EDITOR
if (m_iconPreview != null)
{
DestroyImmediate(m_iconPreview, true);
}
m_iconPreview = tmpTexture;
m_iconPreview.hideFlags = HideFlags.HideInHierarchy;
UnityEditor.AssetDatabase.AddObjectToAsset(m_iconPreview, this);
#else
DestroyImmediate(tmpTexture);
#endif
}
