/// <summary>
/// Deep copy all of the Particle properties
/// </summary>
/// <param name="ParticleToCopy">The Particle to Copy the properties from</param>
public override void CopyFrom(DPSFParticle ParticleToCopy)
{
// Cast the Particle to the type it really is
DefaultSprite3DBillboardTextureCoordinatesParticle cParticleToCopy = (DefaultSprite3DBillboardTextureCoordinatesParticle)ParticleToCopy;
base.CopyFrom(cParticleToCopy);
this.TextureCoordinates = cParticleToCopy.TextureCoordinates;
}
//===========================================================
// Draw Sprite and Overridden Particle System Functions
//===========================================================
/// <summary>
/// Function to draw a Sprite Particle. This function should be used to draw the given
/// Particle with the provided SpriteBatch.
/// </summary>
/// <param name="Particle">The Particle Sprite to Draw</param>
/// <param name="cSpriteBatch">The SpriteBatch to use to doing the Drawing</param>
protected override void DrawSprite(DPSFParticle Particle, SpriteBatch cSpriteBatch)
{
// Cast the Particle to the type it really is
DefaultSprite3DBillboardTextureCoordinatesParticle particle = (DefaultSprite3DBillboardTextureCoordinatesParticle)Particle;
// Calculate the sprites position in 3D space, and flip it vertically so that it is not upside-down.
Vector3 viewSpacePosition = Vector3.Transform(particle.Position, this.View);
// Get the Position of the Particle relative to the camera
Vector2 destination = new Vector2(viewSpacePosition.X, viewSpacePosition.Y);
// Get the Position and Dimensions from the Texture to use for this Sprite
Rectangle sourceFromTexture = particle.TextureCoordinates;
// Calculate how much to scale the sprite to get it to the desired Width and Height.
// Use negative height in order to flip the texture to be right-side up.
Vector2 scale = new Vector2(particle.Width / sourceFromTexture.Width, -particle.Height / sourceFromTexture.Height);
// Make the Sprite rotate about its center
Vector2 origin = new Vector2(sourceFromTexture.Width / 2, sourceFromTexture.Height / 2);
// Draw the Sprite
cSpriteBatch.Draw(Texture, destination, sourceFromTexture, particle.ColorAsPremultiplied, particle.Rotation, origin, scale, particle.FlipMode, viewSpacePosition.Z);
}
