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Code Issues Packages Projects Releases 1 Wiki Activity

Listeniterationen Threadsafe gemacht

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ngb
2022-07-18 22:48:28 +02:00
parent bb50abb7bd
commit 2caa528a5e
4 changed files with 55 additions and 32 deletions
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13
src/main/java/schule/ngb/zm/Zeichenleinwand.java
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@@ -1,12 +1,16 @@
package schule.ngb.zm;
import schule.ngb.zm.shapes.Shape;
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.image.BufferStrategy;
import java.util.ArrayList;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
/**
* Eine Leinwand ist die Hauptkomponente einer Zeichenmaschine. Sie besteht aus
@@ -195,7 +199,8 @@ public class Zeichenleinwand extends Canvas {
public void updateLayers( double delta ) {
synchronized( layers ) {
for( Layer layer : layers ) {
List<Layer> it = List.copyOf(layers);
for( Layer layer : it ) {
layer.update(delta);
}
}
@@ -232,7 +237,8 @@ public class Zeichenleinwand extends Canvas {
public void draw( Graphics graphics ) {
Graphics2D g2d = (Graphics2D) graphics.create();
synchronized( layers ) {
for( Layer layer : layers ) {
List<Layer> it = List.copyOf(layers);
for( Layer layer : it ) {
layer.draw(g2d);
}
}
@@ -256,7 +262,8 @@ public class Zeichenleinwand extends Canvas {
g2d.clearRect(0, 0, getWidth(), getHeight());
synchronized( layers ) {
for( Layer layer : layers ) {
List<Layer> it = List.copyOf(layers);
for( Layer layer : it ) {
layer.draw(g2d);
}
}