JavaFX有其他內(nèi)置的形狀,如
以下代碼顯示了如何創(chuàng)建路徑。
import javafx.application.Application; import javafx.geometry.Insets; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.control.CheckBox; import javafx.scene.layout.HBox; import javafx.scene.layout.StackPane; import javafx.scene.layout.VBox; import javafx.scene.shape.LineTo; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.stage.Stage; public class Main extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) { Scene scene = new Scene(new Group()); stage.setTitle("Checkbox Sample"); stage.setWidth(230); stage.setHeight(120); Path path = new Path(); path.getElements().add(new MoveTo(0.0f, 50.0f)); path.getElements().add(new LineTo(100.0f, 100.0f)); VBox vbox = new VBox(); vbox.getChildren().addAll(path); vbox.setSpacing(5); HBox root = new HBox(); root.getChildren().add(vbox); root.setSpacing(40); root.setPadding(new Insets(20, 10, 10, 20)); ((Group) scene.getRoot()).getChildren().add(root); stage.setScene(scene); stage.show(); } }
路徑元素實(shí)際上從javafx.scene.shape.PathElement類擴(kuò)展,它僅在Path對(duì)象的上下文中使用。
所以你不能實(shí)例化一個(gè)LineTo類放在場(chǎng)景圖中。具有 To
作為后綴的類是路徑元素,而不是Shape節(jié)點(diǎn)。
例如,MoveTo和LineTo對(duì)象實(shí)例是添加到Path對(duì)象的Path元素,而不是可以添加到場(chǎng)景的形狀。
上面的代碼生成以下結(jié)果。
以下代碼顯示了如何向路徑添加 QuadCurveTo
。
import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.scene.shape.QuadCurveTo; import javafx.stage.Stage; public class Main extends Application { @Override public void start(Stage stage) { Group root = new Group(); Scene scene = new Scene(root, 300, 150); stage.setScene(scene); stage.setTitle(""); Path path = new Path(); MoveTo moveTo = new MoveTo(); moveTo.setX(0.0f); moveTo.setY(50.0f); QuadCurveTo quadTo = new QuadCurveTo(); quadTo.setControlX(25.0f); quadTo.setControlY(0.0f); quadTo.setX(50.0f); quadTo.setY(50.0f); path.getElements().add(moveTo); path.getElements().add(quadTo); root.getChildren().add(path); scene.setRoot(root); stage.show(); } public static void main(String[] args) { launch(args); } }
上面的代碼生成以下結(jié)果。
使用Path,MoveTo和CubicCurveTo創(chuàng)建曲線
import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.shape.CubicCurveTo; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.stage.Stage; public class Main extends Application { public static void main(String[] args) { launch(args); } @Override public void start(Stage stage) { stage.setTitle("ComboBoxSample"); Scene scene = new Scene(new Group(), 450, 250); Path path = new Path(); MoveTo moveTo = new MoveTo(); moveTo.setX(0.0f); moveTo.setY(0.0f); CubicCurveTo cubicTo = new CubicCurveTo(); cubicTo.setControlX1(0.0f); cubicTo.setControlY1(0.0f); cubicTo.setControlX2(100.0f); cubicTo.setControlY2(100.0f); cubicTo.setX(100.0f); cubicTo.setY(50.0f); path.getElements().add(moveTo); path.getElements().add(cubicTo); Group root = (Group) scene.getRoot(); root.getChildren().add(path); stage.setScene(scene); stage.show(); } }
上面的代碼生成以下結(jié)果。
減去兩個(gè)形狀以創(chuàng)建路徑
import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.effect.DropShadow; import javafx.scene.effect.DropShadowBuilder; import javafx.scene.paint.Color; import javafx.scene.shape.*; import javafx.stage.Stage; public class Main extends Application { public static void main(String[] args) { Application.launch(args); } @Override public void start(Stage primaryStage) { primaryStage.setTitle("Shapes"); Group root = new Group(); Scene scene = new Scene(root, 300, 300, Color.WHITE); Ellipse bigCircle = EllipseBuilder.create() .centerX(100) .centerY(100) .radiusX(50) .radiusY(75/2) .strokeWidth(3) .stroke(Color.BLACK) .fill(Color.WHITE) .build(); Ellipse smallCircle = EllipseBuilder.create() .centerX(100) .centerY(100) .radiusX(35/2) .radiusY(25/2) .build(); Shape shape = Path.subtract(bigCircle, smallCircle); shape.setStrokeWidth(1); shape.setStroke(Color.BLACK); shape.setFill(Color.rgb(255, 200, 0)); root.getChildren().add(shape); primaryStage.setScene(scene); primaryStage.show(); } }
上面的代碼生成以下結(jié)果。
使用VLineTo創(chuàng)建垂直線
import javafx.application.Application; import javafx.scene.Group; import javafx.scene.Scene; import javafx.scene.layout.VBox; import javafx.scene.shape.MoveTo; import javafx.scene.shape.Path; import javafx.scene.shape.VLineTo; import javafx.stage.Stage; public class Main extends Application { @Override public void start(final Stage stage) { stage.setTitle("HTML"); stage.setWidth(500); stage.setHeight(500); Scene scene = new Scene(new Group()); VBox root = new VBox(); Path path = new Path(); path.getElements().add(new MoveTo(50.0f, 0.0f)); path.getElements().add(new VLineTo(50.0f)); root.getChildren().addAll(path); scene.setRoot(root); stage.setScene(scene); stage.show(); } public static void main(String[] args) { launch(args); } }
上面的代碼生成以下結(jié)果。
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