本文整理汇总了Java中java.awt.image.WritableRaster.setRect方法的典型用法代码示例。如果您正苦于以下问题：Java WritableRaster.setRect方法的具体用法？Java WritableRaster.setRect怎么用？Java WritableRaster.setRect使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.awt.image.WritableRaster的用法示例。
在下文中一共展示了WritableRaster.setRect方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: copyData
import java.awt.image.WritableRaster; //导入方法依赖的package包/类
public WritableRaster copyData(WritableRaster raster) {
if (raster == null) {
return read(new Rectangle(0, 0, getWidth(), getHeight()));
} else {
Raster src = read(raster.getBounds());
raster.setRect(src);
return raster;
}
}
示例2: copyData
import java.awt.image.WritableRaster; //导入方法依赖的package包/类
/**
* Copies an arbitrary rectangular region of the RenderedImage
* into a caller-supplied WritableRaster. The region to be
* computed is determined by clipping the bounds of the supplied
* WritableRaster against the bounds of the image. The supplied
* WritableRaster must have a SampleModel that is compatible with
* that of the image.
*
* <p> If the raster argument is null, the entire image will
* be copied into a newly-created WritableRaster with a SampleModel
* that is compatible with that of the image.
*
* @param dest a WritableRaster to hold the returned portion of
* the image.
* @return a reference to the supplied WritableRaster, or to a
* new WritableRaster if the supplied one was null.
*/
public WritableRaster copyData(WritableRaster dest) {
// Get the image bounds.
Rectangle imageBounds = getBounds();
Rectangle bounds;
if (dest == null) {
// Create a WritableRaster for the entire image.
bounds = imageBounds;
Point p = new Point(minX, minY);
SampleModel sm =
sampleModel.createCompatibleSampleModel(width, height);
dest = Raster.createWritableRaster(sm, p);
} else {
bounds = dest.getBounds();
}
// Determine tile limits for the intersection of the prescribed
// bounds with the image bounds.
Rectangle xsect = imageBounds.contains(bounds) ?
bounds : bounds.intersection(imageBounds);
int startX = XToTileX(xsect.x);
int startY = YToTileY(xsect.y);
int endX = XToTileX(xsect.x + xsect.width - 1);
int endY = YToTileY(xsect.y + xsect.height - 1);
// Loop over the tiles in the intersection.
for (int j = startY; j <= endY; j++) {
for (int i = startX; i <= endX; i++) {
// Retrieve the tile.
Raster tile = getTile(i, j);
// Create a child of the tile for the intersection of
// the tile bounds and the bounds of the requested area.
Rectangle tileRect = tile.getBounds();
Rectangle intersectRect =
bounds.intersection(tile.getBounds());
Raster liveRaster = tile.createChild(intersectRect.x,
intersectRect.y,
intersectRect.width,
intersectRect.height,
intersectRect.x,
intersectRect.y,
null);
// Copy the data from the child.
dest.setRect(liveRaster);
}
}
return dest;
}