如何使用 JavaFX 在 3D 形状上播放视频？
How can I use JavaFX to play video on 3D shape?
我是 JavaFX 和 Java 的新手。我想知道如何在立方体或任何多面体的表面制作场景？我想在任何 3D 形状的表面上播放视频。我该怎么做呢？
实际上，您可以在任何 3D 形状上播放视频。
有一个从 @caprica called VLCJ: A Java framework for the VLC 媒体播放器播放视频的优秀项目。
虽然该项目旨在在 AWT canvas 中呈现，但作者已经做了一些 tests 以在 JavaFX Canvas.
中呈现它
基于他的 JavaFX class，很容易在 3D 形状而不是 2D canvas 节点上渲染缓冲区。
设置
首先，您需要安装第一个VLC视频播放器。
然后你需要一些依赖：vlcj-3.6.0.jar, jna-3.5-2.jar & platform-3.5.2.jar and slfj4j-api.1.7.12.jar.
此外，我将使用 FXyz 库中的一些自定义 3D 形状，尽管您可以使用 API 中的常规形状，例如 Box.
基础
在 3D 形状上渲染视频的技巧是使用其 material 的漫反射贴图，获取图像并定义其纹理。
您可以找到更多关于此的信息 here or here。
因此，对于可用的每一帧，我们都将创建一个新图像并将其设置为漫反射贴图：
ByteBuffer byteBuffer = nativeBuffer.getByteBuffer(0, nativeBuffer.size());
BufferFormat bufferFormat = ((DefaultDirectMediaPlayer) mediaPlayerComponent.getMediaPlayer()).getBufferFormat();
WritableImage textureImage = new WritableImage(bufferFormat.getWidth(), bufferFormat.getHeight());
if (bufferFormat.getWidth() > 0 && bufferFormat.getHeight() > 0) {
textureImage.getPixelWriter().setPixels(0, 0, bufferFormat.getWidth(), bufferFormat.getHeight(), pixelFormat, byteBuffer, bufferFormat.getPitches()[0]);
// apply new frame as texture image to the 3D shape's material
material.setDiffuseMap(textureImage);
}
AnimationTimer 将允许更新帧和纹理。
样本
这是一个在分段圆环上呈现视频的工作示例。
public class Video3D extends Application {
static {
// path to the VLC video player
System.setProperty("jna.library.path", "C:/Program Files/VideoLAN/VLC");
}
// http://download.blender.org/peach/bigbuckbunny_movies/
// (c) copyright 2008, Blender Foundation / www.bigbuckbunny.org
private static final String VIDEO_FILE = "C:\BigBuckBunny_320x180.mp4";
private final DirectMediaPlayerComponent mediaPlayerComponent;
private final WritablePixelFormat<ByteBuffer> pixelFormat;
private final SegmentedTorusMesh torus = new SegmentedTorusMesh(50,40,12,3.2d,4.5d);
private final PhongMaterial material = new PhongMaterial(Color.WHEAT);
private double mousePosX, mousePosY;
private double mouseOldX, mouseOldY;
private final Rotate rotateX = new Rotate(-20, Rotate.X_AXIS);
private final Rotate rotateY = new Rotate(240, Rotate.Y_AXIS);
private final AnimationTimer timer;
public TestVLC(){
mediaPlayerComponent = new TestMediaPlayerComponent();
pixelFormat = PixelFormat.getByteBgraInstance();
timer = new AnimationTimer() {
@Override
public void handle(long now) {
renderFrame();
}
};
}
protected void startTimer() {
mediaPlayerComponent.getMediaPlayer().playMedia(VIDEO_FILE);
timer.start();
}
protected void stopTimer() {
mediaPlayerComponent.getMediaPlayer().stop();
timer.stop();
}
@Override
public void start(Stage primaryStage) {
torus.setCullFace(CullFace.NONE);
torus.setzOffset(1.4);
torus.setMaterial(material);
PerspectiveCamera camera = new PerspectiveCamera(true);
camera.getTransforms().addAll (rotateX, rotateY, new Translate(0, 0, -30));
Group root3D = new Group(camera,torus);
SubScene subScene = new SubScene(root3D, 800, 600, true, SceneAntialiasing.BALANCED);
subScene.setFill(Color.AQUAMARINE);
subScene.setCamera(camera);
BorderPane pane = new BorderPane();
pane.setCenter(subScene);
Button play = new Button("Play");
play.setOnAction(e->startTimer());
Button stop = new Button("Stop");
stop.setOnAction(e->stopTimer());
ToolBar toolBar = new ToolBar(play, stop);
toolBar.setOrientation(Orientation.VERTICAL);
pane.setRight(toolBar);
pane.setPrefSize(600,400);
Scene scene = new Scene(pane);
scene.setOnMousePressed((MouseEvent me) -> {
mouseOldX = me.getSceneX();
mouseOldY = me.getSceneY();
});
scene.setOnMouseDragged((MouseEvent me) -> {
mousePosX = me.getSceneX();
mousePosY = me.getSceneY();
rotateX.setAngle(rotateX.getAngle()-(mousePosY - mouseOldY));
rotateY.setAngle(rotateY.getAngle()+(mousePosX - mouseOldX));
mouseOldX = mousePosX;
mouseOldY = mousePosY;
});
primaryStage.setScene(scene);
primaryStage.setTitle("Video - JavaFX 3D");
primaryStage.show();
}
@Override
public final void stop() throws Exception {
stopTimer();
mediaPlayerComponent.getMediaPlayer().stop();
mediaPlayerComponent.getMediaPlayer().release();
}
/**
* Implementation of a direct rendering media player component that renders
* the video to a JavaFX canvas.
* https://github.com/caprica/vlcj-javafx/blob/master/src/test/java/uk/co/caprica/vlcj/javafx/test/JavaFXDirectRenderingTest.java
*/
private class TestMediaPlayerComponent extends DirectMediaPlayerComponent {
public TestMediaPlayerComponent() {
super(new TestBufferFormatCallback());
}
}
/**
* Callback to get the buffer format to use for video playback.
*/
private class TestBufferFormatCallback implements BufferFormatCallback {
@Override
public BufferFormat getBufferFormat(int sourceWidth, int sourceHeight) {
final int width = sourceWidth;
final int height = sourceHeight;
Platform.runLater(() -> {
torus.setMajorRadius(width/100);
torus.setMinorRadius(height/40);
});
return new RV32BufferFormat(width, height);
}
}
protected final void renderFrame() {
Memory[] nativeBuffers = mediaPlayerComponent.getMediaPlayer().lock();
if (nativeBuffers != null) {
Memory nativeBuffer = nativeBuffers[0];
if (nativeBuffer != null) {
ByteBuffer byteBuffer = nativeBuffer.getByteBuffer(0, nativeBuffer.size());
BufferFormat bufferFormat = ((DefaultDirectMediaPlayer) mediaPlayerComponent.getMediaPlayer()).getBufferFormat();
WritableImage textureImage = new WritableImage(bufferFormat.getWidth(), bufferFormat.getHeight());
if (bufferFormat.getWidth() > 0 && bufferFormat.getHeight() > 0) {
textureImage.getPixelWriter().setPixels(0, 0, bufferFormat.getWidth(), bufferFormat.getHeight(), pixelFormat, byteBuffer, bufferFormat.getPitches()[0]);
material.setDiffuseMap(textureImage);
}
}
}
mediaPlayerComponent.getMediaPlayer().unlock();
}
public static void main(String[] args) {
launch(args);
}
}
这些只是您将获得的两个快照。
这是一个示例，它使用内置的 JavaFX MediaPlayer 并将媒体视图的定期快照拍摄到映射到 3D 形状（在本例中为 Box）的纹理图像中。添加了围绕 Y 轴的旋转动画，以便可以透视地看到盒子的侧面。
import javafx.animation.*;
import javafx.application.*;
import javafx.geometry.Rectangle2D;
import javafx.scene.*;
import javafx.scene.image.WritableImage;
import javafx.scene.media.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
import javafx.util.Duration;
// Display a rotating 3D box with a video projected onto its surface.
public class ThreeDMedia extends Application {
private static final String MEDIA_URL =
"http://download.oracle.com/otndocs/products/javafx/oow2010-2.flv";
private static final int SCENE_W = 640;
private static final int SCENE_H = 400;
private static final double MEDIA_W = 540 * 2/3;
private static final double MEDIA_H = 209 * 2/3;
private static final Color INDIA_INK = Color.rgb(35, 39, 50);
@Override
public void start(Stage stage) {
// create a 3D box shape on which to project the video.
Box box = new Box(MEDIA_W, MEDIA_H, MEDIA_W);
box.setTranslateX(SCENE_W / 2);
box.setTranslateY(SCENE_H / 2);
// create a media player for the video which loops the video forever.
MediaPlayer player = new MediaPlayer(new Media(MEDIA_URL));
player.setCycleCount(MediaPlayer.INDEFINITE);
// create a media view for the video, sized to our specifications.
MediaView mediaView = new MediaView(player);
mediaView.setPreserveRatio(false);
mediaView.setFitWidth(MEDIA_W);
mediaView.setFitHeight(MEDIA_H);
// project the video on to the 3D box.
showMediaOnShape3D(box, mediaView);
// rotate the box.
rotateAroundYAxis(box);
// create a point light source a fair way away so lighting is reasonably even.
PointLight pointLight = new PointLight(
Color.WHITE
);
pointLight.setTranslateX(SCENE_W / 2);
pointLight.setTranslateY(SCENE_H / 2);
pointLight.setTranslateZ(-SCENE_W * 5);
// add a bit of ambient light to make the lighting more natural.
AmbientLight ambientLight = new AmbientLight(
Color.rgb(15, 15, 15)
);
// place the shape and associated lights in a group.
Group group = new Group(
box,
pointLight,
ambientLight
);
// create a 3D scene with a default perspective camera.
Scene scene = new Scene(
group,
SCENE_W, SCENE_H, true, SceneAntialiasing.BALANCED
);
scene.setFill(INDIA_INK);
PerspectiveCamera camera = new PerspectiveCamera();
scene.setCamera(camera);
stage.setScene(scene);
stage.setResizable(false);
// start playing the media, showing the scene once the media is ready to play.
player.setOnReady(stage::show);
player.setOnError(Platform::exit);
player.play();
}
// Project video on to 3D shape.
private void showMediaOnShape3D(Shape3D shape3D, final MediaView mediaView) {
PhongMaterial material = new PhongMaterial();
shape3D.setMaterial(material);
Scene mediaScene = new Scene(
new Group(mediaView),
MEDIA_W, MEDIA_H
);
SnapshotParameters snapshotParameters = new SnapshotParameters();
snapshotParameters.setViewport(
new Rectangle2D(
0, 0, MEDIA_W, MEDIA_H
)
);
WritableImage textureImage = mediaView.snapshot(
snapshotParameters,
null
);
material.setDiffuseMap(textureImage);
AnimationTimer timer = new AnimationTimer() {
@Override
public void handle(long now) {
mediaView.snapshot(
snapshotParameters,
textureImage
);
}
};
timer.start();
}
// Rotates a shape around the y axis indefinitely.
private void rotateAroundYAxis(Shape3D shape3D) {
RotateTransition rotateY = new RotateTransition(
Duration.seconds(10),
shape3D
);
rotateY.setAxis(Rotate.Y_AXIS);
rotateY.setFromAngle(360);
rotateY.setToAngle(0);
rotateY.setCycleCount(RotateTransition.INDEFINITE);
rotateY.setInterpolator(Interpolator.LINEAR);
rotateY.play();
}
public static void main(String[] args) {
launch(args);
}
}
除了 jewelsea 和 José 的更优雅的解决方案之外，您始终可以在 3d space e 中手动定位 MediaView。 G。作为立方体的 6 个面：
public class VideoCubeDemo extends Application {
Random rnd = new Random();
// size of the cube
double size = 320;
@Override
public void start(Stage primaryStage) throws MalformedURLException {
// create media views
List<String> videoFiles = new ArrayList<>();
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
// create faces for the cube
// original cube face code from http://www.javafxapps.in/tutorial/Creating-3D-Cube-in-javafx.html
MediaView r;
int videoIndex;
Group cube = new Group();
List<MediaView> cubeFaces = new ArrayList<>();
// back face
videoIndex = 0;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(0.5 * size);
cubeFaces.add( r);
// bottom face
videoIndex = 1;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(0);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// right face
videoIndex = 2;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-1 * size);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// left face
videoIndex = 3;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(0);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// top face
videoIndex = 4;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-1 * size);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// front face
videoIndex = 5;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(-0.5 * size);
cubeFaces.add( r);
// create cube with all faces
cube.getChildren().addAll( cubeFaces);
// initial cube rotation
cube.getTransforms().addAll(new Rotate(45, Rotate.X_AXIS), new Rotate(45, Rotate.Y_AXIS));
// animate cube
Point3D rotateAxis = new Point3D(1,1,1); // rotate around X, Y and Z
Timeline animation = new Timeline();
animation.getKeyFrames().addAll(
new KeyFrame(Duration.ZERO, new KeyValue(cube.rotationAxisProperty(), rotateAxis), new KeyValue(cube.rotateProperty(), 0d)),
new KeyFrame(Duration.seconds(5), new KeyValue(cube.rotationAxisProperty(), rotateAxis), new KeyValue(cube.rotateProperty(), 360d))
);
animation.setCycleCount(Animation.INDEFINITE);
// add objects to scene
StackPane root = new StackPane();
root.getChildren().add(cube);
Scene scene = new Scene(root, 1600, 900, true, SceneAntialiasing.BALANCED);
scene.setFill(Color.BLACK);
scene.setCamera(new PerspectiveCamera());
primaryStage.setResizable(true);
primaryStage.setScene(scene);
primaryStage.show();
// play videos and animation
for( MediaView mediaPlayer: cubeFaces) {
mediaPlayer.getMediaPlayer().play();
}
animation.play();
}
private MediaView createMediaView( String path) {
Media media = new Media( path);
MediaPlayer mediaPlayer = new MediaPlayer( media);
mediaPlayer.setVolume(0.8);
mediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
MediaView mediaView = new MediaView( mediaPlayer);
mediaView.setFitHeight(size);
mediaView.setFitWidth(size);
mediaView.setPreserveRatio( false);
return mediaView;
}
public static void main(String[] args) {
launch(args);
}
}
我是 JavaFX 和 Java 的新手。我想知道如何在立方体或任何多面体的表面制作场景？我想在任何 3D 形状的表面上播放视频。我该怎么做呢？
实际上，您可以在任何 3D 形状上播放视频。
有一个从 @caprica called VLCJ: A Java framework for the VLC 媒体播放器播放视频的优秀项目。
虽然该项目旨在在 AWT canvas 中呈现，但作者已经做了一些 tests 以在 JavaFX Canvas.
基于他的 JavaFX class，很容易在 3D 形状而不是 2D canvas 节点上渲染缓冲区。
设置
首先，您需要安装第一个VLC视频播放器。
然后你需要一些依赖：vlcj-3.6.0.jar, jna-3.5-2.jar & platform-3.5.2.jar and slfj4j-api.1.7.12.jar.
此外，我将使用 FXyz 库中的一些自定义 3D 形状，尽管您可以使用 API 中的常规形状，例如 Box.
基础
在 3D 形状上渲染视频的技巧是使用其 material 的漫反射贴图，获取图像并定义其纹理。
您可以找到更多关于此的信息 here or here。
因此，对于可用的每一帧，我们都将创建一个新图像并将其设置为漫反射贴图：
ByteBuffer byteBuffer = nativeBuffer.getByteBuffer(0, nativeBuffer.size());
BufferFormat bufferFormat = ((DefaultDirectMediaPlayer) mediaPlayerComponent.getMediaPlayer()).getBufferFormat();
WritableImage textureImage = new WritableImage(bufferFormat.getWidth(), bufferFormat.getHeight());
if (bufferFormat.getWidth() > 0 && bufferFormat.getHeight() > 0) {
textureImage.getPixelWriter().setPixels(0, 0, bufferFormat.getWidth(), bufferFormat.getHeight(), pixelFormat, byteBuffer, bufferFormat.getPitches()[0]);
// apply new frame as texture image to the 3D shape's material
material.setDiffuseMap(textureImage);
}
AnimationTimer 将允许更新帧和纹理。
样本
这是一个在分段圆环上呈现视频的工作示例。
public class Video3D extends Application {
static {
// path to the VLC video player
System.setProperty("jna.library.path", "C:/Program Files/VideoLAN/VLC");
}
// http://download.blender.org/peach/bigbuckbunny_movies/
// (c) copyright 2008, Blender Foundation / www.bigbuckbunny.org
private static final String VIDEO_FILE = "C:\BigBuckBunny_320x180.mp4";
private final DirectMediaPlayerComponent mediaPlayerComponent;
private final WritablePixelFormat<ByteBuffer> pixelFormat;
private final SegmentedTorusMesh torus = new SegmentedTorusMesh(50,40,12,3.2d,4.5d);
private final PhongMaterial material = new PhongMaterial(Color.WHEAT);
private double mousePosX, mousePosY;
private double mouseOldX, mouseOldY;
private final Rotate rotateX = new Rotate(-20, Rotate.X_AXIS);
private final Rotate rotateY = new Rotate(240, Rotate.Y_AXIS);
private final AnimationTimer timer;
public TestVLC(){
mediaPlayerComponent = new TestMediaPlayerComponent();
pixelFormat = PixelFormat.getByteBgraInstance();
timer = new AnimationTimer() {
@Override
public void handle(long now) {
renderFrame();
}
};
}
protected void startTimer() {
mediaPlayerComponent.getMediaPlayer().playMedia(VIDEO_FILE);
timer.start();
}
protected void stopTimer() {
mediaPlayerComponent.getMediaPlayer().stop();
timer.stop();
}
@Override
public void start(Stage primaryStage) {
torus.setCullFace(CullFace.NONE);
torus.setzOffset(1.4);
torus.setMaterial(material);
PerspectiveCamera camera = new PerspectiveCamera(true);
camera.getTransforms().addAll (rotateX, rotateY, new Translate(0, 0, -30));
Group root3D = new Group(camera,torus);
SubScene subScene = new SubScene(root3D, 800, 600, true, SceneAntialiasing.BALANCED);
subScene.setFill(Color.AQUAMARINE);
subScene.setCamera(camera);
BorderPane pane = new BorderPane();
pane.setCenter(subScene);
Button play = new Button("Play");
play.setOnAction(e->startTimer());
Button stop = new Button("Stop");
stop.setOnAction(e->stopTimer());
ToolBar toolBar = new ToolBar(play, stop);
toolBar.setOrientation(Orientation.VERTICAL);
pane.setRight(toolBar);
pane.setPrefSize(600,400);
Scene scene = new Scene(pane);
scene.setOnMousePressed((MouseEvent me) -> {
mouseOldX = me.getSceneX();
mouseOldY = me.getSceneY();
});
scene.setOnMouseDragged((MouseEvent me) -> {
mousePosX = me.getSceneX();
mousePosY = me.getSceneY();
rotateX.setAngle(rotateX.getAngle()-(mousePosY - mouseOldY));
rotateY.setAngle(rotateY.getAngle()+(mousePosX - mouseOldX));
mouseOldX = mousePosX;
mouseOldY = mousePosY;
});
primaryStage.setScene(scene);
primaryStage.setTitle("Video - JavaFX 3D");
primaryStage.show();
}
@Override
public final void stop() throws Exception {
stopTimer();
mediaPlayerComponent.getMediaPlayer().stop();
mediaPlayerComponent.getMediaPlayer().release();
}
/**
* Implementation of a direct rendering media player component that renders
* the video to a JavaFX canvas.
* https://github.com/caprica/vlcj-javafx/blob/master/src/test/java/uk/co/caprica/vlcj/javafx/test/JavaFXDirectRenderingTest.java
*/
private class TestMediaPlayerComponent extends DirectMediaPlayerComponent {
public TestMediaPlayerComponent() {
super(new TestBufferFormatCallback());
}
}
/**
* Callback to get the buffer format to use for video playback.
*/
private class TestBufferFormatCallback implements BufferFormatCallback {
@Override
public BufferFormat getBufferFormat(int sourceWidth, int sourceHeight) {
final int width = sourceWidth;
final int height = sourceHeight;
Platform.runLater(() -> {
torus.setMajorRadius(width/100);
torus.setMinorRadius(height/40);
});
return new RV32BufferFormat(width, height);
}
}
protected final void renderFrame() {
Memory[] nativeBuffers = mediaPlayerComponent.getMediaPlayer().lock();
if (nativeBuffers != null) {
Memory nativeBuffer = nativeBuffers[0];
if (nativeBuffer != null) {
ByteBuffer byteBuffer = nativeBuffer.getByteBuffer(0, nativeBuffer.size());
BufferFormat bufferFormat = ((DefaultDirectMediaPlayer) mediaPlayerComponent.getMediaPlayer()).getBufferFormat();
WritableImage textureImage = new WritableImage(bufferFormat.getWidth(), bufferFormat.getHeight());
if (bufferFormat.getWidth() > 0 && bufferFormat.getHeight() > 0) {
textureImage.getPixelWriter().setPixels(0, 0, bufferFormat.getWidth(), bufferFormat.getHeight(), pixelFormat, byteBuffer, bufferFormat.getPitches()[0]);
material.setDiffuseMap(textureImage);
}
}
}
mediaPlayerComponent.getMediaPlayer().unlock();
}
public static void main(String[] args) {
launch(args);
}
}
这些只是您将获得的两个快照。
这是一个示例，它使用内置的 JavaFX MediaPlayer 并将媒体视图的定期快照拍摄到映射到 3D 形状（在本例中为 Box）的纹理图像中。添加了围绕 Y 轴的旋转动画，以便可以透视地看到盒子的侧面。
import javafx.animation.*;
import javafx.application.*;
import javafx.geometry.Rectangle2D;
import javafx.scene.*;
import javafx.scene.image.WritableImage;
import javafx.scene.media.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;
import javafx.scene.transform.Rotate;
import javafx.stage.Stage;
import javafx.util.Duration;
// Display a rotating 3D box with a video projected onto its surface.
public class ThreeDMedia extends Application {
private static final String MEDIA_URL =
"http://download.oracle.com/otndocs/products/javafx/oow2010-2.flv";
private static final int SCENE_W = 640;
private static final int SCENE_H = 400;
private static final double MEDIA_W = 540 * 2/3;
private static final double MEDIA_H = 209 * 2/3;
private static final Color INDIA_INK = Color.rgb(35, 39, 50);
@Override
public void start(Stage stage) {
// create a 3D box shape on which to project the video.
Box box = new Box(MEDIA_W, MEDIA_H, MEDIA_W);
box.setTranslateX(SCENE_W / 2);
box.setTranslateY(SCENE_H / 2);
// create a media player for the video which loops the video forever.
MediaPlayer player = new MediaPlayer(new Media(MEDIA_URL));
player.setCycleCount(MediaPlayer.INDEFINITE);
// create a media view for the video, sized to our specifications.
MediaView mediaView = new MediaView(player);
mediaView.setPreserveRatio(false);
mediaView.setFitWidth(MEDIA_W);
mediaView.setFitHeight(MEDIA_H);
// project the video on to the 3D box.
showMediaOnShape3D(box, mediaView);
// rotate the box.
rotateAroundYAxis(box);
// create a point light source a fair way away so lighting is reasonably even.
PointLight pointLight = new PointLight(
Color.WHITE
);
pointLight.setTranslateX(SCENE_W / 2);
pointLight.setTranslateY(SCENE_H / 2);
pointLight.setTranslateZ(-SCENE_W * 5);
// add a bit of ambient light to make the lighting more natural.
AmbientLight ambientLight = new AmbientLight(
Color.rgb(15, 15, 15)
);
// place the shape and associated lights in a group.
Group group = new Group(
box,
pointLight,
ambientLight
);
// create a 3D scene with a default perspective camera.
Scene scene = new Scene(
group,
SCENE_W, SCENE_H, true, SceneAntialiasing.BALANCED
);
scene.setFill(INDIA_INK);
PerspectiveCamera camera = new PerspectiveCamera();
scene.setCamera(camera);
stage.setScene(scene);
stage.setResizable(false);
// start playing the media, showing the scene once the media is ready to play.
player.setOnReady(stage::show);
player.setOnError(Platform::exit);
player.play();
}
// Project video on to 3D shape.
private void showMediaOnShape3D(Shape3D shape3D, final MediaView mediaView) {
PhongMaterial material = new PhongMaterial();
shape3D.setMaterial(material);
Scene mediaScene = new Scene(
new Group(mediaView),
MEDIA_W, MEDIA_H
);
SnapshotParameters snapshotParameters = new SnapshotParameters();
snapshotParameters.setViewport(
new Rectangle2D(
0, 0, MEDIA_W, MEDIA_H
)
);
WritableImage textureImage = mediaView.snapshot(
snapshotParameters,
null
);
material.setDiffuseMap(textureImage);
AnimationTimer timer = new AnimationTimer() {
@Override
public void handle(long now) {
mediaView.snapshot(
snapshotParameters,
textureImage
);
}
};
timer.start();
}
// Rotates a shape around the y axis indefinitely.
private void rotateAroundYAxis(Shape3D shape3D) {
RotateTransition rotateY = new RotateTransition(
Duration.seconds(10),
shape3D
);
rotateY.setAxis(Rotate.Y_AXIS);
rotateY.setFromAngle(360);
rotateY.setToAngle(0);
rotateY.setCycleCount(RotateTransition.INDEFINITE);
rotateY.setInterpolator(Interpolator.LINEAR);
rotateY.play();
}
public static void main(String[] args) {
launch(args);
}
}
除了 jewelsea 和 José 的更优雅的解决方案之外，您始终可以在 3d space e 中手动定位 MediaView。 G。作为立方体的 6 个面：
public class VideoCubeDemo extends Application {
Random rnd = new Random();
// size of the cube
double size = 320;
@Override
public void start(Stage primaryStage) throws MalformedURLException {
// create media views
List<String> videoFiles = new ArrayList<>();
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
videoFiles.add( getClass().getResource("funny_cats_compilation_2012.mp4").toExternalForm());
// create faces for the cube
// original cube face code from http://www.javafxapps.in/tutorial/Creating-3D-Cube-in-javafx.html
MediaView r;
int videoIndex;
Group cube = new Group();
List<MediaView> cubeFaces = new ArrayList<>();
// back face
videoIndex = 0;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(0.5 * size);
cubeFaces.add( r);
// bottom face
videoIndex = 1;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(0);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// right face
videoIndex = 2;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-1 * size);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// left face
videoIndex = 3;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(0);
r.setTranslateY(-0.5 * size);
r.setRotationAxis(Rotate.Y_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// top face
videoIndex = 4;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-1 * size);
r.setRotationAxis(Rotate.X_AXIS);
r.setRotate(90);
cubeFaces.add( r);
// front face
videoIndex = 5;
r = createMediaView(videoFiles.get( videoIndex));
r.setTranslateX(-0.5 * size);
r.setTranslateY(-0.5 * size);
r.setTranslateZ(-0.5 * size);
cubeFaces.add( r);
// create cube with all faces
cube.getChildren().addAll( cubeFaces);
// initial cube rotation
cube.getTransforms().addAll(new Rotate(45, Rotate.X_AXIS), new Rotate(45, Rotate.Y_AXIS));
// animate cube
Point3D rotateAxis = new Point3D(1,1,1); // rotate around X, Y and Z
Timeline animation = new Timeline();
animation.getKeyFrames().addAll(
new KeyFrame(Duration.ZERO, new KeyValue(cube.rotationAxisProperty(), rotateAxis), new KeyValue(cube.rotateProperty(), 0d)),
new KeyFrame(Duration.seconds(5), new KeyValue(cube.rotationAxisProperty(), rotateAxis), new KeyValue(cube.rotateProperty(), 360d))
);
animation.setCycleCount(Animation.INDEFINITE);
// add objects to scene
StackPane root = new StackPane();
root.getChildren().add(cube);
Scene scene = new Scene(root, 1600, 900, true, SceneAntialiasing.BALANCED);
scene.setFill(Color.BLACK);
scene.setCamera(new PerspectiveCamera());
primaryStage.setResizable(true);
primaryStage.setScene(scene);
primaryStage.show();
// play videos and animation
for( MediaView mediaPlayer: cubeFaces) {
mediaPlayer.getMediaPlayer().play();
}
animation.play();
}
private MediaView createMediaView( String path) {
Media media = new Media( path);
MediaPlayer mediaPlayer = new MediaPlayer( media);
mediaPlayer.setVolume(0.8);
mediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
MediaView mediaView = new MediaView( mediaPlayer);
mediaView.setFitHeight(size);
mediaView.setFitWidth(size);
mediaView.setPreserveRatio( false);
return mediaView;
}
public static void main(String[] args) {
launch(args);
}
}