public BatchItem(Texture2D texture, Vector2 position, Nullable <Rectangle> sourceRectangle, Color color, float rotation, Vector2 origin, Vector2 size, SpriteBatch.SpriteEffects effects, float layerDepth, SpriteBatch.SpriteSortMode sortMode)
{
this.texture = texture;
Vector4 tempText;
if (sourceRectangle.HasValue)
{
tempText = new Vector4((float)sourceRectangle.Value.X / texture.Width, (float)sourceRectangle.Value.Y / texture.Height, (float)sourceRectangle.Value.Width / texture.Width, (float)sourceRectangle.Value.Height / texture.Height);
}
else
{
tempText = new Vector4(0, 0, 1, 1);
}
InitBatchItem(position, color, rotation, origin, new Vector2(size.X, size.Y), effects, layerDepth, sortMode, tempText);
}
private void InitBatchItem(Vector2 position, Color color, float rotation, Vector2 origin, Vector2 size, SpriteBatch.SpriteEffects effects, float layerDepth, SpriteBatch.SpriteSortMode sortMode, Vector4 tempText)
{
if ((effects & SpriteBatch.SpriteEffects.FlipVertically) != 0)
{
texTopLeft.X = tempText.X + tempText.Z;
texBottomRight.X = tempText.X;
}
else
{
texTopLeft.X = tempText.X;
texBottomRight.X = tempText.X + tempText.Z;
}
if ((effects & SpriteBatch.SpriteEffects.FlipHorizontally) != 0)
{
texTopLeft.Y = tempText.Y + tempText.W;
texBottomRight.Y = tempText.Y;
}
else
{
texTopLeft.Y = tempText.Y;
texBottomRight.Y = tempText.Y + tempText.W;
}
positions = new Vector3[4];
positions[0] = new Vector3(-origin.X, -origin.Y, layerDepth);
positions[1] = new Vector3(-origin.X + size.X, -origin.Y, layerDepth);
positions[2] = new Vector3(-origin.X, -origin.Y + size.Y, layerDepth);
positions[3] = new Vector3(-origin.X + size.X, -origin.Y + size.Y, layerDepth);
if (rotation != 0.0f || ((rotation = rotation % (float)(Math.PI * 2)) != 0.0f))
{
float cosR = (float)Math.Cos(rotation);//TODO: correct rotation
float sinR = (float)Math.Sin(rotation);
for (int i = 0; i < positions.Length; i++)
{
positions[i] = new Vector3(positions[i].X * cosR - positions[i].Y * sinR, positions[i].Y * cosR + positions[i].X * sinR, positions[i].Z);
}
}
for (int i = 0; i < positions.Length; i++)
{
positions[i] += new Vector3(origin.X + position.X, origin.Y + position.Y, 0.0f);
}
this.color = color;
switch (sortMode)
{
case SpriteBatch.SpriteSortMode.BackToFront:
this.sortingKey = -layerDepth;
break;
case SpriteBatch.SpriteSortMode.FrontToBack:
this.sortingKey = layerDepth;
break;
case SpriteBatch.SpriteSortMode.Texture:
this.sortingKey = texture.GetHashCode();
break;
}
}
