public static SpriteTemplate fromSprites(
LinkedList<Sprite> sprites, Layer layer, Shape pivotShape, Relativity relativity) {
SpriteTemplate template = null;
double leftX = 0d, topY = 0d, rightX = 0d, bottomY = 0d;
Sprite newSprite = new Sprite();
for (Sprite sprite : sprites) {
if (sprite.shapeType.getNum() == ShapeType.spriteTemplate.getNum()) continue;
if (template != null) {
leftX = Math.min(leftX, sprite.leftX());
topY = Math.min(topY, sprite.topY());
rightX = Math.max(rightX, sprite.rightX());
bottomY = Math.max(bottomY, sprite.bottomY());
} else {
template = new SpriteTemplate();
leftX = sprite.leftX();
topY = sprite.topY();
rightX = sprite.rightX();
bottomY = sprite.bottomY();
if (pivotShape == null) pivotShape = sprite;
}
}
if (template != null) {
newSprite.setCoords(0.5d * (leftX + rightX), 0.5d * (topY + bottomY));
newSprite.setHeight(bottomY - topY);
newSprite.shapeType = template;
if (layer != null) layer.insert(newSprite, pivotShape, relativity);
for (Sprite sprite : sprites) {
if (sprite.shapeType.getNum() == ShapeType.spriteTemplate.getNum()) continue;
layer.remove(sprite);
sprite.setCoords(
(newSprite.getX() - sprite.getX()) / newSprite.getWidth(),
(newSprite.getY() - sprite.getY()) / newSprite.getHeight());
sprite.setSize(
sprite.getWidth() / newSprite.getWidth(), sprite.getHeight() / newSprite.getHeight());
template.sprites.addLast(sprite);
}
}
return template;
}