internal void Draw(DrawSpec spec)
{
if (spec.transform != null)
{
var transform = spec.transform.Value;
Html5.Context.SetTransform(transform.M11, transform.M12, transform.M21, transform.M22, transform.M41, transform.M42);
}
foreach (var sprite in spec.spriteSpecs)
{
Html5.Context.Save();
Html5.Context.Translate(sprite.position.X, sprite.position.Y);
Html5.Context.Rotate(sprite.rotation);
if (sprite.text == null)
{
if (sprite.color.PackedValue != Color.White.PackedValue) //Save some CPU/GPU resource
{
Html5.Context.GlobalAlpha = (float)sprite.color.PackedValue / (float)Color.White.PackedValue;
}
}
float dx = -sprite.origin.X * (sprite.useVScale ? sprite.vScale.X : sprite.scale);
float dy = -sprite.origin.Y * (sprite.useVScale ? sprite.vScale.Y : sprite.scale);
if (sprite.rectangle == null)
{
if (sprite.text == null) //texture
{
float dw = sprite.texture.Width * (sprite.useVScale ? sprite.vScale.X : sprite.scale);
float dh = sprite.texture.Height * (sprite.useVScale ? sprite.vScale.Y : sprite.scale);
if (sprite.effects == SpriteEffects.FlipHorizontally)
{
Html5.Context.Scale(-1, 1);
Html5.Context.Translate(-dw, 0f);
}
else if (sprite.effects == SpriteEffects.FlipVertically)
{
Html5.Context.Scale(1, -1);
Html5.Context.Translate(0f, -dh);
}
Html5.Context.DrawImage(sprite.texture.Image,
dx, dy, dw, dh
);
}
else //font
{
Html5.Context.TextAlign = CanvasTypes.CanvasTextAlign.Start;
var color = sprite.color;
Html5.Context.FillStyle = string.Format("rgba({0},{1},{2},{3})",
Convert.ToInt32(color.R),
Convert.ToInt32(color.G),
Convert.ToInt32(color.B),
Convert.ToInt32(color.A)
);
float size = SpriteFont.Size * sprite.scale;
Html5.Context.Font = Convert.ToInt32(size) + "px " + SpriteFont.Font;
Html5.Context.FillText(sprite.text, Convert.ToInt32(dx), 0);
}
}
else
{
var rec = sprite.rectangle.Value;
float sx = rec.X;
float sy = rec.Y;
float sw = rec.Width;
float sh = rec.Height;
float dw = rec.Width * (sprite.useVScale ? sprite.vScale.X : sprite.scale);
float dh = rec.Height * (sprite.useVScale ? sprite.vScale.Y : sprite.scale);
if (sprite.effects == SpriteEffects.FlipHorizontally)
{
Html5.Context.Scale(-1, 1);
Html5.Context.Translate(-dw, 0f);
}
else if (sprite.effects == SpriteEffects.FlipVertically)
{
Html5.Context.Scale(1, -1);
Html5.Context.Translate(0f, -dh);
}
Html5.Context.DrawImage(sprite.texture.Image,
sx, sy, sw, sh, dx, dy, dw, dh
);
}
Html5.Context.Restore();
}
if (spec.transform != null)
{
Html5.Context.SetTransform(1, 0, 0, 1, 0, 0);
}
}
public SpriteBatch(GraphicsDevice graphicDevice)
{
_graphicDevice = graphicDevice;
drawSpecs = new DrawSpec();
drawSpecs.spriteSpecs = new List <SpriteSpec>();
}
