描画位置以外の値を変更する

このページは映像エフェクトプラグイン作成入門の一部です。

/icons/-.icon

これまでは描画位置のみを扱っていました。

今回は拡大率や不透明度などの扱い方を解説します。

不透明度

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var opacity = 0.5;

return effectDescription.DrawDescription with

{

Opacity = effectDescription.DrawDescription.Opacity * opacity

};

}

これは不透明度50%のエフェクトとして機能します。

50%は50ではなく0.5と書くことに注意してください。

拡大率

XYまとめて

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var zoom = 0.5;

return effectDescription.DrawDescription with

{

Zoom = effectDescription.DrawDescription.Zoom * (float)zoom

};

}

XY個別

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var zoomX = 0.5;

var zoomY = 2.1;

return effectDescription.DrawDescription with

{

Zoom = new(

effectDescription.DrawDescription.Zoom.X * (float)zoomX,

effectDescription.DrawDescription.Zoom.Y * (float)zoomY)

};

}

回転角

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var rotationX = 50.5;

var rotationY = -30.6;

var rotationZ = 95.6;

return effectDescription.DrawDescription with

{

Rotation = new(

effectDescription.DrawDescription.Rotation.X + (float)rotationX,

effectDescription.DrawDescription.Rotation.Y + (float)rotationY,

effectDescription.DrawDescription.Rotation.Z + (float)rotationZ)

};

}

単位は度数法です。（360°で一回転）

左右反転

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var invert = true;

return effectDescription.DrawDescription with

{

Invert = invert ? !effectDescription.DrawDescription.Invert : effectDescription.DrawDescription.Invert

};

}

複数書ける

code:cs

public DrawDescription Update(EffectDescription effectDescription)

{

var opacity = 0.5;

var zoom = 1.2;

var rotationZ = 95;

return effectDescription.DrawDescription with

{

Opacity = opacity,

Zoom = effectDescription.DrawDescription.Zoom * (float)zoom,

Rotation = new(

effectDescription.DrawDescription.Rotation.X,

effectDescription.DrawDescription.Rotation.Y,

effectDescription.DrawDescription.Rotation.Z + rotationZ)

};

}

/icons/-.icon