方法的Java可以改变像素值 [英] Methods in Java which can change pixel values

问题描述

我工作的Java和可视化的动画样的程序。我现在用的摆动和 AWT 库。我看着这一点，所有的人都使用油漆组件的方法，然后重绘（）十几实施时，他们希望借助在JFrame形状。

I am working on an animation kind of program in java and for visualization. I am using the swing and awt libraries. I looked at a dozen implementations of this and all of them use a paint Component method and then repaint() when they want to draw shapes on the JFrame.

有一些，我可以从我希望可以为例如改变单一的像素值的任何类调用的方法？

Is there some method that I can call from any class that I want that can for example change a single pixel value?

我也想和形状的一个数组列表：

I also want to make an array list with shapes:

ArrayList<Rectangle> rectangles = new ArrayList<Rectangle>(); 

和我很好奇，怎么事情添加到它。
我的想法是：

And I am curious how to add things to it. I was thinking:

Rectangle rect = "something"
rectangles.add(rect);

但我不知道的东西应该是什么。
我是比较新的这一点，所以如果我失去了一些东西明显的随意EX preSS的意见。

But I'm not sure what something should be. I am relatively new to this, so feel free to express your views if I'm missing something obvious.

推荐答案

显然，我是）咆哮的时候我号召大家使用重绘白痴（;这里是更好的办法。
说我想创建一个矩形或图片上的JFrame线或椭圆形，

Apparently I was ranting when I called everyone an idiot for using repaint(); here's the better way. Say I wanted to create a rectangle or image or line or oval on the jframe,

公开的JFrame帧=新的JFrame（）;结果
     公共无效paintingHome（）{结果
     //设置在JFrame和东西结果
     的System.out.println（这是矩形）;结果
     paintARectangle（frame.getGraphics（），42，256）;结果
     }结果
     公共无效paintARectangle（图形克，INT XCOORD，诠释YCOORD，诠释的宽度，高度INT）{结果
     g.fillRact（XCOORD，YCOORD，宽度，高度）;结果，
     //这么简单结果
     }结果
     //你可以有你想要的结果尽可能多
     公共无效paintWhatever（图形克，无论东西）{结果
     g.doSomethingWith（无论）;结果
     //这实际上不会工作，直到Oracle发布版本238249.3432.4结果
     }结果
     //使用frame.getGraphics键（）方法的结果
     //重绘是不必要的限制性

public JFrame frame = new JFrame();
public void paintingHome(){
//set up the jframe and stuff
System.out.println("This is a rectangle");
paintARectangle(frame.getGraphics(), 42, 256);
}
public void paintARectangle(Graphics g, int xCoord, int yCoord, int width, int height){
g.fillRact(xCoord, yCoord, width, height);
//simple as that
}
//and you can have as many as you want
public void paintWhatever(Graphics g, Something whatever){
g.doSomethingWith(whatever);
//that won't actually work until oracle releases version 238249.3432.4
}
//the key is using the frame.getGraphics() method
//repaint is unnecessary and restrictive

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