本文整理汇总了Java中java.awt.image.WritableRaster.setSamples方法的典型用法代码示例。如果您正苦于以下问题：Java WritableRaster.setSamples方法的具体用法？Java WritableRaster.setSamples怎么用？Java WritableRaster.setSamples使用的例子？那么, 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.setSamples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: createOverview
import java.awt.image.WritableRaster; //导入方法依赖的package包/类
private static URL createOverview(GeoImageReader gir, boolean toFlip) throws IOException {
File f = File.createTempFile("kmloverview", ".png");
// generate a suitable size image
double ratio = Math.max(((double) gir.getWidth()) / 1024., ((double) gir.getHeight()) / 1024.);
// generate overview image
BufferedImage temp = new BufferedImage((int) (gir.getWidth() * (1.0 / ratio)), (int) (gir.getHeight() * (1.0 / ratio)), gir.getType(true));
// get a handle on the raster data
WritableRaster raster = temp.getRaster();
int[] data = gir.readAndDecimateTile(0, 0, gir.getWidth(), gir.getHeight(), 1.0 / ratio, true,0);
raster.setSamples(0, 0, temp.getWidth(), temp.getHeight(), 0, data);
float average = 0;
for (int i = 0; i < data.length; i++) {
average = average + data[i];
}
average = average / data.length;
RescaleOp rescale = new RescaleOp(((1 << (8 * gir.getNumberOfBytes())) / 5f / average), 0, null);
rescale.filter(temp, temp);
ColorConvertOp bop = new ColorConvertOp(null);
BufferedImage out = bop.createCompatibleDestImage(temp, new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_GRAY), false, false, ComponentColorModel.OPAQUE, DataBuffer.TYPE_BYTE));
out = bop.filter(temp, out);
//flip the image if necessary
if (toFlip) {
int w = out.getWidth();
int h = out.getHeight();
BufferedImage dimg = new BufferedImage(w, h, out.getType());
Graphics2D g = dimg.createGraphics();
g.drawImage(out, 0, 0, w, h, w, 0, 0, h, null);
g.dispose();
ImageIO.write(dimg, "png", f);
} else {
ImageIO.write(out, "png", f);
}
return f.toURI().toURL();
}
示例2: createFrame
import java.awt.image.WritableRaster; //导入方法依赖的package包/类
private static BufferedImage createFrame(int[] palette) {
IndexColorModel icm = new IndexColorModel(getNumBits(palette.length),
palette.length, palette, 0, false, -1, DataBuffer.TYPE_BYTE);
WritableRaster wr = icm.createCompatibleWritableRaster(w, h);
int[] samples = new int[w * h];
Arrays.fill(samples, 0);
wr.setSamples(0, 0, w, h, 0, samples);
BufferedImage img = new BufferedImage(icm, wr, false, null);
return img;
}