FadeAnimation erstellt

src/main/java/schule/ngb/zm/anim/FadeAnimation.java

@@ -0,0 +1,44 @@
+package schule.ngb.zm.anim;
+
+import schule.ngb.zm.Color;
+import schule.ngb.zm.Constants;
+import schule.ngb.zm.shapes.Shape;
+
+import java.util.function.DoubleUnaryOperator;
+
+@SuppressWarnings( "unused" )
+public class FadeAnimation extends Animation<Shape> {
+
+	public static final int FADE_IN = 255;
+
+	public static final int FADE_OUT = 0;
+
+	private Shape object;
+
+	private Color fill, stroke;
+
+	private int fillAlpha, strokeAlpha, tAlpha;
+
+	public FadeAnimation( Shape object, int alpha, int runtime, DoubleUnaryOperator easing ) {
+		super(runtime, easing);
+
+		this.object = object;
+		fill = object.getFillColor();
+		fillAlpha = fill.getAlpha();
+		stroke = object.getStrokeColor();
+		strokeAlpha = stroke.getAlpha();
+		tAlpha = alpha;
+	}
+
+	@Override
+	public Shape getAnimationTarget() {
+		return object;
+	}
+
+	@Override
+	public void interpolate( double e ) {
+		object.setFillColor(new Color(fill, (int) Constants.interpolate(fillAlpha, tAlpha, e)));
+		object.setStrokeColor(new Color(stroke, (int) Constants.interpolate(strokeAlpha, tAlpha, e)));
+	}
+
+}