java显示单色图 java如何给图形设置颜色

由于您不关心它是矢量形状还是位图,我将在此处使用位图概述解决方案.如果你真的想要一个矢量形状,我相信你需要使用矢量输入来获得一个好的结果.
使用ColorAdjust效果,亮度设置为最小(-1).
缓存SPEED的结果.
这是一个创建图像阴影轮廓的示例：
import javafx.application.Application;
import javafx.scene.*;
import javafx.scene.effect.ColorAdjust;
import javafx.scene.image.*;
import javafx.stage.Stage;
public class Shadow extends Application {
@Override
public void start(Stage stage) throws Exception {
ImageView imageView = new ImageView(
new Image(
"http://i.stack.imgur.com/jbT1H.png")
);
ColorAdjust blackout = new ColorAdjust();
blackout.setBrightness(-1.0);
imageView.setEffect(blackout);
imageView.setCache(true);
imageView.setCacheHint(CacheHint.SPEED);
stage.setScene(new Scene(new Group(imageView)));
stage.show();
}
public static void main(String[] args) {
Application.launch();
}
}
这是另一个调整图像颜色的样本,将鼠标悬停在smurfette上以使其脸红.
import javafx.application.Application;
import javafx.beans.binding.Bindings;
import javafx.scene.*;
import javafx.scene.effect.*;
import javafx.scene.image.*;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
public class Shadow extends Application {
@Override
public void start(Stage stage) throws Exception {
Image image = new Image(
"http://icons.iconarchive.com/icons/designbolts/smurfs-movie/128/smurfette-icon.png");
ImageView imageView = new ImageView(image);
imageView.setClip(new ImageView(image));
ColorAdjust monochrome = new ColorAdjust();
monochrome.setSaturation(-1.0);
Blend blush = new Blend(
BlendMode.MULTIPLY,
monochrome,
new ColorInput(
0,
0,
imageView.getImage().getWidth(),
imageView.getImage().getHeight(),
Color.RED
)
);
imageView.effectProperty().bind(
Bindings
.when(imageView.hoverProperty())
.then((Effect) blush)
.otherwise((Effect) null)
);
imageView.setCache(true);
imageView.setCacheHint(CacheHint.SPEED);
stage.setScene(new Scene(new Group(imageView), Color.AQUA));
stage.show();
}
public static void main(String[] args) {
Application.launch();
}
}