Projector(投影器)

关于投影器

投影器算法由 @Bryan33 所提供，所谓投影器则是向量的投影，通过投影器，我们可以将原本2D或3D的图形，利用投影器投射至你所给定的向量的朝向上

如何使用

投影器目前有两种，TwoDProjector和ThreeDProjector, TwoDProjector则是只会投影2D的图像，如果你原本要投影一个3D的图形, 那么则只会投射一个2D的平面，ThreeDProjector则是会投影出3D的图形出来，具体使用方法可以翻阅代码

一些例子

通过玩家的Direction进投影(TwoDProjector)

Vector vector = player.getLocation().getDirection();
Location location = player.getLocation();
World world = location.getWorld();
BiFunction<Double, Double, Location> method = TwoDProjector.create2DProjector(location, vector);
Bukkit.getScheduler().runTaskTimer(this, () -> {
    for (int i = 0; i < 360; i++) {
        double rad = Math.toRadians(i);
        double x = Math.cos(rad);
        double z = Math.sin(rad);
        // 通过投影器开始转换坐标
        Location loc = method.apply(x, z);
        world.spawnParticle(Particle.VILLAGER_HAPPY, loc, 1, 0, 0, 0, 0);
    }
}, 0L, 10L);

具体效果：

发射螺旋!

Vector vector = player.getLocation().getDirection();
Location location = player.getLocation();
World world = location.getWorld();
ThreeDProjector projector = new ThreeDProjector(location, vector);
Bukkit.getScheduler().runTaskTimer(this, () -> {
    double y = 0;
    for (int i = 0; i < 8 * 360; i += 20) {
        double rad = Math.toRadians(i);
        double x = Math.cos(rad);
        y += 0.1;
        double z = Math.sin(rad);
        // 通过投影器开始转换坐标
        Location loc = projector.apply(x, y, z);
        world.spawnParticle(Particle.VILLAGER_HAPPY, loc, 1, 0, 0, 0, 0);
    }
}, 0L, 10L);

具体效果：