本文整理匯總了Java中javax.imageio.ImageWriteParam.getSourceYSubsampling方法的典型用法代碼示例。如果您正苦於以下問題：Java ImageWriteParam.getSourceYSubsampling方法的具體用法？Java ImageWriteParam.getSourceYSubsampling怎麽用？Java ImageWriteParam.getSourceYSubsampling使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類javax.imageio.ImageWriteParam的用法示例。
在下文中一共展示了ImageWriteParam.getSourceYSubsampling方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: computeRegions
import javax.imageio.ImageWriteParam; //導入方法依賴的package包/類
/**
* Compute the source region and destination dimensions taking any
* parameter settings into account.
*/
private static void computeRegions(Rectangle sourceBounds,
Dimension destSize,
ImageWriteParam p) {
ImageWriteParam param;
int periodX = 1;
int periodY = 1;
if (p != null) {
int[] sourceBands = p.getSourceBands();
if (sourceBands != null &&
(sourceBands.length != 1 ||
sourceBands[0] != 0)) {
throw new IllegalArgumentException("Cannot sub-band image!");
}
// Get source region and subsampling factors
Rectangle sourceRegion = p.getSourceRegion();
if (sourceRegion != null) {
// Clip to actual image bounds
sourceRegion = sourceRegion.intersection(sourceBounds);
sourceBounds.setBounds(sourceRegion);
}
// Adjust for subsampling offsets
int gridX = p.getSubsamplingXOffset();
int gridY = p.getSubsamplingYOffset();
sourceBounds.x += gridX;
sourceBounds.y += gridY;
sourceBounds.width -= gridX;
sourceBounds.height -= gridY;
// Get subsampling factors
periodX = p.getSourceXSubsampling();
periodY = p.getSourceYSubsampling();
}
// Compute output dimensions
destSize.setSize((sourceBounds.width + periodX - 1)/periodX,
(sourceBounds.height + periodY - 1)/periodY);
if (destSize.width <= 0 || destSize.height <= 0) {
throw new IllegalArgumentException("Empty source region!");
}
}