如何在事件上转圈? [英] How do I make a circle move on events?

问题描述

我对javafx还是很陌生，所以我想在这里学习，所以请保持理性，不要忽略我的问题，我真的很感谢任何帮助，谢谢！

I'm pretty new to javafx so I'm trying to learn here so please be reasonable and don't dis away my question, I really appreciate any help at all, thanks!

我想知道如何移动对象，比方说在不同事件(例如按键或鼠标单击，mousemove等)上的这个圆圈.

I would like to know how I could move an object, let's say this circle on different events, like keypress or mouseclick, mousemove, whatever.

Circle circle = new Circle();
circle.setCenterX(100.0f);
circle.setCenterY(100.0f);
circle.setRadius(50.0f);

我是否需要使用我在javafx网站教程上看到的KeyFrame东西，或者它如何工作?

Do I need to use that KeyFrame thing I saw on the javafx site tutorial, or how does this work?

老实说，如果我没有那么迷茫，我不会在这里问这个. 因此，请澄清一下:通过使用事件移动我创建的对象的代码是什么?

I would not have asked this here if I weren't feeling so lost, honestly. So to make this clear: What is the code for moving objects that I created, by using events?

移动是指按向上键，它向上移动几个像素，或者用另一个键对其进行变换，或者单击场景中的某个位置，使其立即移动到该位置或以一定速度移动到那里.我希望不必像使用html5 canvas一样重绘它，对吧?

By moving it I mean, press up key and it moves up by a few pixels, transform it maybe, with another key, or click somewhere on the scene and make it move there instantly or travel there with a certain speed. I don't have to redraw it like you need to with html5 canvas, I hope, right?

推荐答案

我不需要像使用html5 canvas那样重绘它，我希望是吧?

I don't have to redraw it like you need to with html5 canvas, I hope, right?

如果您使用的是标准 JavaFX场景图，则不会与 JavaFX画布相对.

Not if you are using a standard JavaFX scene graph as opposed to a JavaFX canvas.

我想知道如何移动对象，比如说在不同事件上的圆圈，例如按键或鼠标单击，鼠标移动等.

I would like to know how I could move an object, let's say this circle on different events, like keypress or mouseclick, mousemove, whatever

有三种方法可以移动形状:

1. 您可以调整形状的几何形状(例如 centerX /centerY属性).
2. 您可以调整形状的布局(例如 layoutX /layoutY属性).
3. 您可以调整形状的平移(例如，它的

1. You can adjust the shape's geometry (e.g. the centerX/centerY properties of a circle).
2. You can adjust the shape's layout (e.g. it's layoutX/layoutY properties).
3. You can adjust the shape's translation (e.g. it's translateX/translateY properties).

您可以将布局视为对象的原始位置；即通常应该在其父组的上下文中.您可以将其视为对象的临时位置(通常在对对象进行动画处理时使用).

You can think of the layout as the home position for the object; i.e. where it should normally be in the context of it's parent group. You can think of it's translation transform as a temporary position for an object (often used when the object is being animated).

如果您使用的是布局窗格，例如 VBox 或 TilePane ，然后布局窗格将为您设置子节点的布局坐标.如果您使用的是简单的 Group 或普通 Pane 或

If you are using a layout pane such as a VBox or TilePane, then the layout pane will handle setting the layout co-ordinates of the child node for you. If you are using a simple Group or a plain Pane or Region, then you are responsible for setting the correct layout values for the child nodes.

要监听事件，请在节点或这是一个小型示例应用，它演示了上述内容.它将对象移动到Group内，并根据各种事件修改对象在Group内的位置.

Here is a small sample app which demonstrates the above. It places the object to be moved inside a Group and modifies the position of the object within a Group in response to various events.

这篇关于如何在事件上转圈?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！