javafx辉光粉碎动画
我刚刚开始编写和学习javafx,做了一个简单的项目,我的问题是在我的图形环境中添加了发光效果之后,动画的速度明显减慢了javafx辉光粉碎动画,java,javafx,glow,Java,Javafx,Glow,我刚刚开始编写和学习javafx,做了一个简单的项目,我的问题是在我的图形环境中添加了发光效果之后,动画的速度明显减慢了 /** * JavaFX rocks ;) */ public class CDLMatrix extends Application { Stage matrixStage; private final String characters = "Effect glow = new Glow(1.0); gc.setEffect(glow); WHY
/**
* JavaFX rocks ;)
*/
public class CDLMatrix extends Application {
Stage matrixStage;
private final String characters = "Effect glow = new Glow(1.0); gc.setEffect(glow); WHY SHATTERS ?!";
private final Random random = new Random();
protected final Font font = Font.font("MS PGothic", FontWeight.BOLD, 15);
char[] data = new char[2000 * 2000];
int[] path = new int[2000 * 2000];
private long lastTime = 0;
int getNumberOfCharsPerRow() {
return (int) matrixStage.getWidth() / 12;
}
int getNumberOfCharsPerColumn() {
return (int) matrixStage.getHeight() / 12;
}
// takes random for now
private char getChar() {
return characters.charAt(Math.abs(random.nextInt()
% characters.length()));
}
void update(long now) {
if (lastTime == 0) {
lastTime = now;
}
// fadeTime = how fast trail will fade out
// flipRate = how fast trail chars will change
final int fadeTime = 3;
final float flipRate = 0.01f;
final int fillStart = 100;
final float fillRate = 0.01f;
int numberOfCharsPerRow = getNumberOfCharsPerRow();
int numberOfCharsPerColumn = getNumberOfCharsPerColumn();
int numberOfChars = numberOfCharsPerRow * numberOfCharsPerColumn;
for (int i = numberOfChars - 1; i >= 0; --i) {
if (i + numberOfCharsPerRow < numberOfChars) {
if (path[i] == 255) {
// This means char was just set
// Initialize the next row at this X
// position
path[i + numberOfCharsPerRow] = 255;
data[i + numberOfCharsPerRow] = getChar();
}
}
// path[i] > 64 means if this char Green component > 25%
if (path[i] > 64 && random.nextFloat() < flipRate) {
data[i] = getChar();
}
// Decrement the char Green component
if (path[i] > fadeTime) {
path[i] -= fadeTime;
} else {
path[i] = 0;
}
// First row
// Start doing stuff only if the Green component > 40%
if (i < numberOfCharsPerRow && path[i] <= fillStart) {
if (random.nextFloat() < fillRate) {
path[i] = 255;
data[i] = getChar();
}
}
}
lastTime = now;
}
@Override
public void start(Stage stage) throws Exception {
this.matrixStage = stage;
matrixStage.setTitle("CDL Matrix");
Group root = new Group();
Scene scene = new Scene(root, 1024, 768);
scene.addEventHandler(KeyEvent.KEY_PRESSED,
new EventHandler<KeyEvent>() {
@Override
// F key for full screen ;)
public void handle(KeyEvent keyEvent) {
if (keyEvent.getCode() == KeyCode.F) {
matrixStage.setFullScreen(!matrixStage
.isFullScreen());
}
// ctrl + Q = exit
if (keyEvent.isControlDown()
&& keyEvent.getCode() == KeyCode.Q) {
matrixStage.close();
}
}
});
Canvas canvas = new Canvas();
canvas.widthProperty().bind(matrixStage.widthProperty());
canvas.heightProperty().bind(matrixStage.heightProperty());
final GraphicsContext gc = canvas.getGraphicsContext2D();
gc.setFont(font);
// Effect glow = new Glow(1.0); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
// gc.setEffect(glow); <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
new AnimationTimer() {
@Override
public void handle(long now) {
update(now);
gc.clearRect(0, 0, matrixStage.getWidth(),
matrixStage.getHeight());
gc.setFill(Color.rgb(0, 1, 0));
gc.fillRect(0, 0, matrixStage.getWidth(),
matrixStage.getHeight());
int y = 0;
int numberOfCharsPerRow = getNumberOfCharsPerRow();
int numberOfCharsPerColumn = getNumberOfCharsPerColumn();
// Colors
for (int i = 0; i < numberOfCharsPerRow
* numberOfCharsPerColumn; ++i) {
gc.setFill(Color.rgb(0, path[i], 0));
String text = String.valueOf(data[i]);
gc.fillText(text, (i % numberOfCharsPerRow) * 12 + 1,
y + 13);
if (i % numberOfCharsPerRow == numberOfCharsPerRow - 1) {
y += 12;
}
}
}
}.start();
root.getChildren().add(canvas);
matrixStage.setScene(scene);
matrixStage.show();
}
}
/**
*JavaFX;)
*/
公共类CDLMatrix扩展了应用程序{
阶段矩阵阶段;
private final String characters=“Effect glow=new glow(1.0);gc.setEffect(glow);为什么破碎?!”;
私有最终随机=新随机();
受保护的最终字体Font=Font.Font(“MS PGothic”,fontwweight.BOLD,15);
字符[]数据=新字符[2000*2000];
int[]路径=新int[2000*2000];
私有长lastTime=0;
int getNumberOfCharsPerRow(){
return(int)matrixStage.getWidth()/12;
}
int getNumberOfCharsPerColumn()列{
return(int)matrixStage.getHeight()/12;
}
//现在是随机的
私有字符getChar(){
返回characters.charAt(Math.abs(random.nextInt())
%字符长度());
}
无效更新(现在很长){
如果(lastTime==0){
上次=现在;
}
//fadeTime=轨迹淡出的速度
//flipRate=轨迹字符变化的速度
最终整数衰减时间=3;
最终浮动翻转率=0.01f;
最终int fillStart=100;
最终浮子填充率=0.01f;
int numberOfCharsPerRow=getNumberOfCharsPerRow();
int numberOfCharsPerColumn=getNumberOfCharsPerColumn();
int numberOfChars=NumberOfCharsError*numberOfCharsPerColumn;
对于(int i=numberOfChars-1;i>=0;--i){
如果(i+numberOfChars箭头64意味着如果此碳绿色成分>25%
if(路径[i]>64&&random.nextFloat()fadeTime){
路径[i]-=fadeTime;
}否则{
路径[i]=0;
}
//第一排
//只有当绿色部分>40%时,才开始做事
如果(i
然后,动画将以正常速度而不是幻灯片速度出现
更改:
gc.setEffect(glow);
致:
JavaFX的内部实现中一定有某种东西会导致应用效果(例如应用于GraphicsContext
而不是节点
)的效率降低几个数量级。您可能希望在中提交一个问题,以便让开发人员进行研究
测试环境:Java 8u40,OS X 10.9哇,辉光效果真的会扼杀动画性能,肯定不会在辉光下摇摆…谢谢你,它解决了我的问题。我一直在想,在更新中使用gc是否会影响我使用辉光效果后的性能下降。以及设置g高级别(画布)上的低级别解决了问题。无需担心。请添加一条评论,并链接到您创建的问题跟踪器问题(如果有)。谢谢。
canvas.setEffect(glow);