本文整理了Java中java.awt.Rectangle.isEmpty方法的一些代码示例，展示了Rectangle.isEmpty的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Rectangle.isEmpty方法的具体详情如下：
包路径：java.awt.Rectangle
类名称：Rectangle
方法名：isEmpty

Rectangle.isEmpty介绍

[英]Determines whether or not this Rectangle is empty. A Rectangle is empty if its width or its height is less than or equal to zero.
[中]确定此Rectangle是否为空。如果Rectangle的宽度或高度小于或等于零，则其为空。

代码示例

代码示例来源：origin: runelite/runelite

@Override
public Rectangle getBounds()
{
  final Rectangle bounds = super.getBounds();
  final Rectangle parent = getParentBounds(client.getWidget(widgetInfo));
  if (parent.isEmpty())
  {
    return bounds;
  }
  int x = bounds.x;
  int y = bounds.y;
  x = Math.max(parent.x, x);
  y = Math.max(parent.y, y);
  x = Math.min((int)parent.getMaxX() - bounds.width, x);
  y = Math.min((int)parent.getMaxY() - bounds.height, y);
  bounds.setLocation(x, y);
  return bounds;
}

代码示例来源：origin: runelite/runelite

@Override
public Dimension render(Graphics2D graphics)
{
  final Widget widget = client.getWidget(widgetInfo);
  final Rectangle bounds = super.getBounds();
  final Rectangle parent = getParentBounds(widget);
  if (parent.isEmpty())
  {
    return null;
  }
  int x = bounds.x;
  int y = bounds.y;
  x = Math.max(parent.x, x);
  y = Math.max(parent.y, y);
  x = Math.min((int)parent.getMaxX() - bounds.width, x);
  y = Math.min((int)parent.getMaxY() - bounds.height, y);
  bounds.setLocation(x, y);
  widget.setOriginalX(0);
  widget.setOriginalY(0);
  widget.setRelativeX(bounds.x - parent.x);
  widget.setRelativeY(bounds.y - parent.y);
  return new Dimension(widget.getWidth(), widget.getHeight());
}

代码示例来源：origin: runelite/runelite

final Rectangle bounds = overlay.getBounds();
if (bounds.isEmpty())

代码示例来源：origin: geotools/geotools

private void doSetScreenArea(Rectangle screenArea) {
  if (screenArea == null || screenArea.isEmpty()) {
    this.screenArea = new Rectangle();
  } else {
    this.screenArea = new Rectangle(screenArea);
  }
  setTransforms(false);
}

代码示例来源：origin: geotools/geotools

/**
 * Checks if the view port bounds are empty (undefined). This will be {@code true} if either or
 * both of the world bounds and screen bounds are empty.
 *
 * @return {@code true} if empty
 */
public boolean isEmpty() {
  lock.readLock().lock();
  try {
    return screenArea.isEmpty() || bounds.isEmpty();
  } finally {
    lock.readLock().unlock();
  }
}

代码示例来源：origin: apache/cloudstack

public boolean add(Rectangle rect) {
  if (bound.isEmpty()) {
    assert (rectList.size() == 0);
    bound.x = rect.x;
    bound.y = rect.y;
    bound.width = rect.width;
    bound.height = rect.height;
    rectList.add(rect);
    return true;
  }
  Rectangle rcInflated = new Rectangle(rect.x - 1, rect.y - 1, rect.width + 2, rect.height + 2);
  if (!bound.intersects(rcInflated))
    return false;
  for (Rectangle r : rectList) {
    if (r.intersects(rcInflated)) {
      if (!r.contains(rect)) {
        enlargeBound(rect);
        rectList.add(rect);
        return true;
      }
    }
  }
  return false;
}

代码示例来源：origin: geotools/geotools

if (!(r == null || r.isEmpty())) {
  int dx = 0;
  int dy = 0;

代码示例来源：origin: nguyenq/tess4j

/**
 * Sets image to be processed.
 *
 * @param xsize width of image
 * @param ysize height of image
 * @param buf pixel data
 * @param rect the bounding rectangle defines the region of the image to be
 * recognized. A rectangle of zero dimension or <code>null</code> indicates
 * the whole image.
 * @param bpp bits per pixel, represents the bit depth of the image, with 1
 * for binary bitmap, 8 for gray, and 24 for color RGB.
 */
protected void setImage(int xsize, int ysize, ByteBuffer buf, Rectangle rect, int bpp) {
  int bytespp = bpp / 8;
  int bytespl = (int) Math.ceil(xsize * bpp / 8.0);
  TessBaseAPISetImage(handle, buf, xsize, ysize, bytespp, bytespl);
  if (rect != null && !rect.isEmpty()) {
    TessBaseAPISetRectangle(handle, rect.x, rect.y, rect.width, rect.height);
  }
}

代码示例来源：origin: nguyenq/tess4j

/**
 * Sets image to be processed.
 *
 * @param xsize width of image
 * @param ysize height of image
 * @param buf pixel data
 * @param rect the bounding rectangle defines the region of the image to be
 * recognized. A rectangle of zero dimension or <code>null</code> indicates
 * the whole image.
 * @param bpp bits per pixel, represents the bit depth of the image, with 1
 * for binary bitmap, 8 for gray, and 24 for color RGB.
 */
protected void setImage(int xsize, int ysize, ByteBuffer buf, Rectangle rect, int bpp) {
  int bytespp = bpp / 8;
  int bytespl = (int) Math.ceil(xsize * bpp / 8.0);
  api.TessBaseAPISetImage(handle, buf, xsize, ysize, bytespp, bytespl);
  if (rect != null && !rect.isEmpty()) {
    api.TessBaseAPISetRectangle(handle, rect.x, rect.y, rect.width, rect.height);
  }
}

代码示例来源：origin: geotools/geotools

/** {@inheritDoc} */
@Override
public void moveImage(int dx, int dy) {
  drawingLock.lock();
  try {
    if (isShowing() && !getVisibleRect().isEmpty()) {
      imageOrigin.translate(dx, dy);
      baseImageMoved.set(true);
      repaint();
      onImageMoved();
    }
  } finally {
    drawingLock.unlock();
  }
}

代码示例来源：origin: geotools/geotools

if (screenArea.isEmpty()) {
  screenToWorld = worldToScreen = null;
  hasCenteringTransforms = false;

代码示例来源：origin: geotools/geotools

/**
 * Checks that the provided <code>dimensions</code> when intersected with the source region used
 * by the provided {@link ImageReadParam} instance does not result in an empty {@link
 * Rectangle}.
 *
 * <p>Input parameters cannot be null.
 *
 * @param readParameters an instance of {@link ImageReadParam} for which we want to check the
 *     source region element.
 * @param dimensions an instance of {@link Rectangle} to use for the check.
 * @return <code>true</code> if the intersection is not empty, <code>false</code> otherwise.
 */
public static final boolean checkEmptySourceRegion(
    final ImageReadParam readParameters, final Rectangle dimensions) {
  Utilities.ensureNonNull("readDimension", dimensions);
  Utilities.ensureNonNull("readP", readParameters);
  final Rectangle sourceRegion = readParameters.getSourceRegion();
  Rectangle.intersect(sourceRegion, dimensions, sourceRegion);
  if (sourceRegion.isEmpty()) return true;
  readParameters.setSourceRegion(sourceRegion);
  return false;
}

代码示例来源：origin: geotools/geotools

private boolean renewCachedCoverage(DirectPosition centrePos) {
  final Rectangle queryRect = createQueryGridEnvelope(centrePos);
  if (queryRect.isEmpty()) {
    return false;
  }
  final GridCoverage2DReader reader = sourceRef.get();
  GeneralParameterValue parameter =
      new Parameter(
          AbstractGridFormat.READ_GRIDGEOMETRY2D,
          new GridGeometry2D(
              new GridEnvelope2D(queryRect),
              reader.getOriginalGridToWorld(PixelInCell.CELL_CENTER),
              reader.getCoordinateReferenceSystem()));
  try {
    cachedCoverage = (GridCoverage2D) reader.read(new GeneralParameterValue[] {parameter});
    return cachedCoverage != null;
  } catch (Exception ex) {
    throw new RuntimeException(ex);
  }
}

代码示例来源：origin: geotools/geotools

/**
 * Checks that the provided {@code dimensions} when intersected with the source region used by
 * the provided {@link ImageReadParam} instance does not result in an empty {@link Rectangle}.
 * Finally, in case the region intersection is not empty, set it as new source region for the
 * provided {@link ImageReadParam}.
 *
 * <p>Input parameters cannot be null.
 *
 * @param readParameters an instance of {@link ImageReadParam} for which we want to check the
 *     source region element.
 * @param dimensions an instance of {@link Rectangle} to use for the check.
 * @return {@code true} if the intersection is not empty, {@code false} otherwise.
 */
public static boolean checkEmptySourceRegion(
    final ImageReadParam readParameters, final Rectangle dimensions) {
  Utilities.ensureNonNull("readDimension", dimensions);
  Utilities.ensureNonNull("readP", readParameters);
  final Rectangle sourceRegion = readParameters.getSourceRegion();
  Rectangle.intersect(sourceRegion, dimensions, sourceRegion);
  if (sourceRegion.isEmpty()) {
    return true;
  }
  readParameters.setSourceRegion(sourceRegion);
  return false;
}

代码示例来源：origin: geotools/geotools

final Rectangle imageBounds = binaryImage.getBounds();
final Rectangle overlapArea = imageBounds.intersection(tileBounds);
if (overlapArea.isEmpty()) {
  return false;

代码示例来源：origin: geotools/geotools

viewport.setMatchingAspectRatio(true);
Rectangle rect = getVisibleRect();
if (!rect.isEmpty()) {
  viewport.setScreenArea(rect);

代码示例来源：origin: geotools/geotools

@Test
public void fullCtor() {
  MapViewport vp = new MapViewport(WORLD_1_1, true);
  assertTrue(vp.isEmpty());
  assertTrue(vp.isMatchingAspectRatio());
  assertTrue(vp.getScreenArea().isEmpty());
  assertTrue(WORLD_1_1.boundsEquals2D(vp.getBounds(), TOL));
}

代码示例来源：origin: geotools/geotools

@Test
public void booleanCtor() {
  MapViewport vp = new MapViewport(true);
  assertTrue(vp.isEmpty());
  assertTrue(vp.isMatchingAspectRatio());
  assertTrue(vp.getBounds().isEmpty());
  assertTrue(vp.getScreenArea().isEmpty());
}

代码示例来源：origin: geotools/geotools

@Test
public void boundsCtor() {
  MapViewport vp = new MapViewport(WORLD_1_1);
  assertTrue(vp.isEmpty());
  assertFalse(vp.isMatchingAspectRatio());
  assertTrue(vp.getScreenArea().isEmpty());
  assertTrue(WORLD_1_1.boundsEquals2D(vp.getBounds(), TOL));
}

代码示例来源：origin: geotools/geotools

@Test
public void defaultCtor() {
  MapViewport vp = new MapViewport();
  assertFalse(vp.isMatchingAspectRatio());
  assertTrue(vp.isEmpty());
  assertTrue(vp.getBounds().isEmpty());
  assertTrue(vp.getScreenArea().isEmpty());
  assertNull(vp.getCoordinateReferenceSystem());
}