Rect GetImageUVRect(Image image, Rect localRect, Vector2[] uv)
{
Rect imageRect = new Rect(0, 0, image.size.x, image.size.y);
Rect bound = ToolSet.Intersection(ref imageRect, ref localRect);
Rect uvRect = image.texture.uvRect;
if (image.scale9Grid != null)
{
Rect gridRect = (Rect)image.scale9Grid;
float sourceW = image.texture.width;
float sourceH = image.texture.height;
uvRect = Rect.MinMaxRect(Mathf.Lerp(uvRect.xMin, uvRect.xMax, gridRect.xMin / sourceW),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (sourceH - gridRect.yMax) / sourceH),
Mathf.Lerp(uvRect.xMin, uvRect.xMax, gridRect.xMax / sourceW),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (sourceH - gridRect.yMin) / sourceH));
float vw = imageRect.width - (sourceW - gridRect.width);
float vh = imageRect.height - (sourceH - gridRect.height);
uvRect = Rect.MinMaxRect(Mathf.Lerp(uvRect.xMin, uvRect.xMax, (bound.x - gridRect.x) / vw),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (imageRect.height - bound.yMax - (sourceH - gridRect.yMax)) / vh),
Mathf.Lerp(uvRect.xMin, uvRect.xMax, (bound.xMax - gridRect.x) / vw),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (imageRect.height - bound.yMin - gridRect.y) / vh));
}
else
{
uvRect = Rect.MinMaxRect(Mathf.Lerp(uvRect.xMin, uvRect.xMax, bound.xMin / imageRect.width),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (imageRect.height - bound.yMax) / imageRect.height),
Mathf.Lerp(uvRect.xMin, uvRect.xMax, bound.xMax / imageRect.width),
Mathf.Lerp(uvRect.yMin, uvRect.yMax, (imageRect.height - bound.yMin) / imageRect.height));
}
uv[0] = uvRect.position;
uv[1] = new Vector2(uvRect.xMin, uvRect.yMax);
uv[2] = new Vector2(uvRect.xMax, uvRect.yMax);
uv[3] = new Vector2(uvRect.xMax, uvRect.yMin);
if (image.texture.rotated)
{
ToolSet.RotateUV(uv, ref image.texture.uvRect);
}
return(uvRect);
}
