internal void InternalDraw(Texture2D texture, Vector2 position,
Rectangle?sourceRectangle, Color color, float rotation, Vector2 origin,
Vector2 scale, SpriteEffects effects, float layerDepth)
{
if (texture == null)
{
throw new ArgumentNullException("texture");
}
if (!inBatch || disposed)
{
throw new InvalidOperationException("SpriteBatch is in incorrect state");
}
// Need to change batch
if (texture != lastTexture || color != lastColor || !CanAddSprite)
{
if (lastTexture != null) // if lastTexture == null, this is the first batch
{
RenderSprites();
}
lastTexture = texture;
lastColor = color;
}
Rectangle rect = sourceRectangle.HasValue ? sourceRectangle.Value : texture.SourceRect;
// From Krab.Geometry.Transform2D.CreateTranslateScaleRotateTranslate
float M11, M12, M21, M22, OffsetX, OffsetY;
float cos = (float)Math.Cos(rotation);
float sin = (float)Math.Sin(rotation);
M11 = cos * scale.X; M12 = sin * scale.X;
M21 = -sin * scale.Y; M22 = cos * scale.Y;
OffsetX = -origin.X * cos * scale.X + origin.Y * sin * scale.Y + position.X;
OffsetY = -origin.Y * cos * scale.Y - origin.X * sin * scale.X + position.Y;
// Initial sprite width and height:
float w = rect.Width;
float h = rect.Height;
// Create and transform position vertices (from Krab.Geometry.Transform2D.Transform)
SpriteVertices s = new SpriteVertices();
s.v0.position.X = w * M11 + 0 * M21 + OffsetX;
s.v0.position.Y = w * M12 + 0 * M22 + OffsetY;
s.v1.position.X = w * M11 + h * M21 + OffsetX;
s.v1.position.Y = w * M12 + h * M22 + OffsetY;
s.v2.position.X = 0 * M11 + 0 * M21 + OffsetX;
s.v2.position.Y = 0 * M12 + 0 * M22 + OffsetY;
s.v3.position.X = 0 * M11 + h * M21 + OffsetX;
s.v3.position.Y = 0 * M12 + h * M22 + OffsetY;
// Setup texture coordinates
texture.texture.FillTextureCoordinates(rect, effects, ref s);
AddSprite(ref s);
}
internal void FillTextureCoordinates(Rectangle r, SpriteEffects flip, ref SpriteVertices verts)
{
int fh = (int)flip & 1; // SpriteEffects.FlipHorizontally = 1
int fv = (int)flip >> 8; // SpriteEffects.FlipVertically = 256
verts.v0.uv = new Vector2(texWidthRatio * (r.X + ((1 - fh) * r.Width)), texHeightRatio * (r.Y + ((fv) * r.Height)));
verts.v1.uv = new Vector2(texWidthRatio * (r.X + ((1 - fh) * r.Width)), texHeightRatio * (r.Y + ((1 - fv) * r.Height)));
verts.v2.uv = new Vector2(texWidthRatio * (r.X + ((fh) * r.Width)), texHeightRatio * (r.Y + ((fv) * r.Height)));
verts.v3.uv = new Vector2(texWidthRatio * (r.X + ((fh) * r.Width)), texHeightRatio * (r.Y + ((1 - fv) * r.Height)));
}
internal void FillTextureCoordinates(Rectangle r, SpriteEffects flip, ref SpriteVertices verts)
{
int fh = (int)flip & 1; // SpriteEffects.FlipHorizontally = 1
int fv = (int)flip >> 8; // SpriteEffects.FlipVertically = 256
verts.v0.uv = new Vector2(texWidthRatio * (r.X + ((1-fh) * r.Width)), texHeightRatio * (r.Y + (( fv) * r.Height)));
verts.v1.uv = new Vector2(texWidthRatio * (r.X + ((1-fh) * r.Width)), texHeightRatio * (r.Y + ((1-fv) * r.Height)));
verts.v2.uv = new Vector2(texWidthRatio * (r.X + (( fh) * r.Width)), texHeightRatio * (r.Y + (( fv) * r.Height)));
verts.v3.uv = new Vector2(texWidthRatio * (r.X + (( fh) * r.Width)), texHeightRatio * (r.Y + ((1-fv) * r.Height)));
}
private unsafe void AddSprite(ref SpriteVertices sprite)
{
Debug.Assert(CanAddSprite);
((SpriteVertices *)spriteArray)[_spriteArrayCount++] = sprite;
}
private unsafe void AddSprite(ref SpriteVertices sprite)
{
Debug.Assert(CanAddSprite);
((SpriteVertices*)spriteArray)[_spriteArrayCount++] = sprite;
}
internal void InternalDraw(Texture2D texture, Vector2 position,
Rectangle? sourceRectangle, Color color, float rotation, Vector2 origin,
Vector2 scale, SpriteEffects effects, float layerDepth)
{
if(texture == null)
throw new ArgumentNullException("texture");
if(!inBatch || disposed)
throw new InvalidOperationException("SpriteBatch is in incorrect state");
// Need to change batch
if(texture != lastTexture || color != lastColor || !CanAddSprite)
{
if(lastTexture != null) // if lastTexture == null, this is the first batch
RenderSprites();
lastTexture = texture;
lastColor = color;
}
Rectangle r = sourceRectangle.HasValue ? sourceRectangle.Value : texture.Bounds;
// From Krab.Geometry.Transform2D.CreateTranslateScaleRotateTranslate
float M11, M12, M21, M22, OffsetX, OffsetY;
float cos = (float)Math.Cos(rotation);
float sin = (float)Math.Sin(rotation);
M11 = cos * scale.X; M12 = sin * scale.X;
M21 = -sin * scale.Y; M22 = cos * scale.Y;
OffsetX = -origin.X * cos * scale.X + origin.Y * sin * scale.Y + position.X;
OffsetY = -origin.Y * cos * scale.Y - origin.X * sin * scale.X + position.Y;
// Initial sprite width and height:
float w = r.Width;
float h = r.Height;
// Create and transform position vertices (from Krab.Geometry.Transform2D.Transform)
SpriteVertices s = new SpriteVertices();
s.v0.position.X = w * M11 + 0 * M21 + OffsetX;
s.v0.position.Y = w * M12 + 0 * M22 + OffsetY;
s.v1.position.X = w * M11 + h * M21 + OffsetX;
s.v1.position.Y = w * M12 + h * M22 + OffsetY;
s.v2.position.X = 0 * M11 + 0 * M21 + OffsetX;
s.v2.position.Y = 0 * M12 + 0 * M22 + OffsetY;
s.v3.position.X = 0 * M11 + h * M21 + OffsetX;
s.v3.position.Y = 0 * M12 + h * M22 + OffsetY;
// Setup texture coordinates
int fh = (int)effects & 1; // SpriteEffects.FlipHorizontally = 1
int fv = (int)effects >> 8; // SpriteEffects.FlipVertically = 256
s.v0.uv.X = lastTexture.texWidthRatio * (r.X + ((1-fh) * r.Width));
s.v1.uv.X = lastTexture.texWidthRatio * (r.X + ((1-fh) * r.Width));
s.v2.uv.X = lastTexture.texWidthRatio * (r.X + (( fh) * r.Width));
s.v3.uv.X = lastTexture.texWidthRatio * (r.X + (( fh) * r.Width));
s.v0.uv.Y = lastTexture.texHeightRatio * (r.Y + (( fv) * r.Height));
s.v1.uv.Y = lastTexture.texHeightRatio * (r.Y + ((1-fv) * r.Height));
s.v2.uv.Y = lastTexture.texHeightRatio * (r.Y + (( fv) * r.Height));
s.v3.uv.Y = lastTexture.texHeightRatio * (r.Y + ((1-fv) * r.Height));
AddSprite(ref s);
}