public static Matrix GetAbsoluteRotationMatrix(this IRenderableIpso ipso)
{
var flipHorizontal = ipso.GetAbsoluteFlipHorizontal();
float rotationDegrees;
if (flipHorizontal)
{
rotationDegrees = -ipso.GetAbsoluteRotation();
}
else
{
rotationDegrees = ipso.GetAbsoluteRotation();
}
return(Matrix.CreateRotationZ(-MathHelper.ToRadians(rotationDegrees)));
}
public static void Render(SystemManagers managers, SpriteRenderer spriteRenderer,
IRenderableIpso ipso, Texture2D texture, Color color,
Rectangle?sourceRectangle = null,
bool flipVertical = false,
float rotationInDegrees = 0,
bool treat0AsFullDimensions = false,
// In the case of Text objects, we send in a line rectangle, but we want the Text object to be the owner of any resulting render states
object objectCausingRenering = null
)
{
if (objectCausingRenering == null)
{
objectCausingRenering = ipso;
}
Renderer renderer = null;
if (managers == null)
{
renderer = Renderer.Self;
}
else
{
renderer = managers.Renderer;
}
Texture2D textureToUse = texture;
if (textureToUse == null)
{
textureToUse = LoaderManager.Self.InvalidTexture;
if (textureToUse == null)
{
return;
}
}
SpriteEffects effects = SpriteEffects.None;
var flipHorizontal = ipso.GetAbsoluteFlipHorizontal();
var effectiveParentFlipHorizontal = ipso.Parent?.GetAbsoluteFlipHorizontal() ?? false;
if (flipHorizontal)
{
effects |= SpriteEffects.FlipHorizontally;
//rotationInDegrees *= -1;
}
var rotationInRadians = MathHelper.ToRadians(rotationInDegrees);
float leftAbsolute = ipso.GetAbsoluteX();
float topAbsolute = ipso.GetAbsoluteY();
Vector2 origin = Vector2.Zero;
//if(flipHorizontal)
//{
// var offsetX = (float)System.Math.Cos(rotationInRadians);
// var offsetY = (float)System.Math.Sin(rotationInRadians);
// origin.X = 1;
//}
if (flipVertical)
{
effects |= SpriteEffects.FlipVertically;
}
var modifiedColor = color;
if (Renderer.NormalBlendState == BlendState.AlphaBlend)
{
// we are using premult textures, so we need to premult the color:
var alphaRatio = color.A / 255.0f;
modifiedColor.R = (byte)(color.R * alphaRatio);
modifiedColor.G = (byte)(color.G * alphaRatio);
modifiedColor.B = (byte)(color.B * alphaRatio);
}
if ((ipso.Width > 0 && ipso.Height > 0) || treat0AsFullDimensions == false)
{
Vector2 scale = Vector2.One;
if (textureToUse == null)
{
scale = new Vector2(ipso.Width, ipso.Height);
}
else
{
float ratioWidth = 1;
float ratioHeight = 1;
if (sourceRectangle.HasValue)
{
ratioWidth = sourceRectangle.Value.Width / (float)textureToUse.Width;
ratioHeight = sourceRectangle.Value.Height / (float)textureToUse.Height;
}
scale = new Vector2(ipso.Width / (ratioWidth * textureToUse.Width),
ipso.Height / (ratioHeight * textureToUse.Height));
}
#if DEBUG
if (textureToUse != null && textureToUse.IsDisposed)
{
throw new ObjectDisposedException($"Texture is disposed. Texture name: {textureToUse.Name}, sprite scale: {scale}, Sprite name: {ipso.Name}");
}
#endif
spriteRenderer.Draw(textureToUse,
new Vector2(leftAbsolute, topAbsolute),
sourceRectangle,
modifiedColor,
-rotationInRadians,
origin,
scale,
effects,
0,
objectCausingRenering);
}
else
{
int width = textureToUse.Width;
int height = textureToUse.Height;
if (sourceRectangle != null && sourceRectangle.HasValue)
{
width = sourceRectangle.Value.Width;
height = sourceRectangle.Value.Height;
}
Rectangle destinationRectangle = new Rectangle(
(int)(leftAbsolute),
(int)(topAbsolute),
width,
height);
spriteRenderer.Draw(textureToUse,
destinationRectangle,
sourceRectangle,
modifiedColor,
rotationInRadians,
origin,
effects,
0,
objectCausingRenering
);
}
}