static public Rect GetRect(this RectI2 item)
{
return(new Rect(
item.GetLowerLeftPoint().GetVector2(),
item.GetSize().GetVector2()
));
}
static public bool IsSolid(this Texture2D item, RectI2 rect, float threshold = 1e-3f)
{
if (item.GetSolidness(rect) >= threshold)
{
return(true);
}
return(false);
}
static public void Shrinkwrap(this Sprite item)
{
Texture2D texture = item.texture.Sideload();
RectI2 original = item.rect.GetRectI2();
RectI2 shrunk = texture.ShrinkwrapRect(original);
VectorF2 original_pixel_pivot = original.ConvertPercentPointToRangePoint(item.GetNormalizedPivot().GetVectorF2());
VectorF2 shrunk_normalized_pivot = shrunk.ConvertRangePointToPercentPoint(original_pixel_pivot);
Rect new_rect = shrunk.GetRect();
Vector2 new_pivot = shrunk_normalized_pivot.GetVector2();
item.ModifySprite(delegate(SerializedProperty property) {
property.ForceProperty("m_Rect").rectValue = new_rect;
property.ForceProperty("m_Pivot").vector2Value = new_pivot;
property.ForceProperty("m_Alignment").intValue = (int)new_pivot.GetSpriteAlignment();
});
}
static public RectI2 ShrinkwrapSide(this Texture2D item, RectI2 rect, RectSide side)
{
RectI2 center;
RectI2 edge;
do
{
rect.SplitBySideOffset(1, side, out center, out edge);
if (item.IsSolid(edge))
{
return(rect);
}
rect = center;
}while (center.IsCollapsed() == false);
return(center);
}
static public float GetSolidness(this Texture2D item, RectI2 rect)
{
return(rect.GetPoints()
.Convert(p => item.GetSolidness(p))
.Average());
}
static public RectI2 ShrinkwrapRect(this Texture2D item, RectI2 rect)
{
return(typeof(RectSide).GetEnumValues <RectSide>()
.Apply(rect, (r, s) => item.ShrinkwrapSide(r, s)));
}
