public OpacitySpriteEdit(LevelMap map, double opacity, boolean isRelative) {
super();
this.map = map;
sprites = new ArrayList(map.selectedSprites);
// save the sprites' old opacity
for (int i = 0; i < sprites.size(); i++) {
SpriteInstance sprite = sprites.get(i);
oldOpacities.add(sprite.opacity);
}
// change the sprites' opacity and save their new opacity
for (int i = 0; i < sprites.size(); i++) {
SpriteInstance sprite = sprites.get(i);
if (isRelative) sprite.opacity *= opacity;
else sprite.opacity = opacity;
sprite.setOpacity(sprite.opacity);
newOpacities.add(sprite.opacity);
}
map.flagModified();
}
public void redo() {
for (int i = 0; i < sprites.size(); i++) {
SpriteInstance sprite = sprites.get(i);
sprite.opacity = newOpacities.get(i);
}
map.flagModified();
}