下面列出了怎么用java.awt.image.AffineTransformOp的API类实例代码及写法，或者点击链接到github查看源代码。
public static void zoomImage(String src, Integer maxPicSize) throws Exception {
File srcFile = new File(src);
long fileSize = srcFile.length();
String subfix = FileHelper.getFileSuffix(srcFile.getName());
List<String> list = Arrays.asList( "jpg,jpeg,bmp,gif".split(",") ); // 这些格式支持有损压缩，png等不支持
if (fileSize <= maxPicSize * 1024 || !list.contains(subfix.toLowerCase())) { // 文件本身已小于size（K）时，不做缩放
return;
}
Double rate = (maxPicSize * 1024.0) / fileSize; // 获取长宽缩放比例
rate = Math.max(rate, 0.5);
BufferedImage bufImg = ImageIO.read(srcFile);
Image Itemp = bufImg.getScaledInstance(bufImg.getWidth(), bufImg.getHeight(), Image.SCALE_SMOOTH);
AffineTransformOp ato = new AffineTransformOp(AffineTransform.getScaleInstance(rate, rate), null);
Itemp = ato.filter(bufImg, null);
ImageIO.write((BufferedImage) Itemp, subfix, srcFile);
}
@Override
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
if (OGLBufImgOps.renderImageWithOp(sg, img, op, x, y)) {
return;
}
}
img = op.filter(img, null);
}
copyImage(sg, img, x, y, null);
}
public static void rotateImage(File result) {
try {
BufferedImage image;
try (FileInputStream fis = new FileInputStream(result)) {
image = ImageIO.read(fis);
}
AffineTransform tx = AffineTransform.getScaleInstance(-1, -1);
tx.translate(-image.getWidth(null), -image.getHeight(null));
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
image = op.filter(image, null);
try (FileOutputStream fos = new FileOutputStream(result)) {
ImageIO.write(image, "jpg", fos);
}
} catch (Exception e) {
LOG.error("unable to rotate image", e);
}
}
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
img = op.filter(img, null);
}
}
copyImage(sg, img, x, y, null);
}
@Override
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
if (D3DBufImgOps.renderImageWithOp(sg, img, op, x, y)) {
return;
}
}
img = op.filter(img, null);
}
copyImage(sg, img, x, y, null);
}
public static boolean isSimpleTranslate(SunGraphics2D sg) {
int ts = sg.transformState;
if (ts <= SunGraphics2D.TRANSFORM_INT_TRANSLATE) {
// Integer translates are always "simple"
return true;
}
if (ts >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
// Scales and beyond are always "not simple"
return false;
}
// non-integer translates are only simple when not interpolating
if (sg.interpolationType == AffineTransformOp.TYPE_NEAREST_NEIGHBOR) {
return true;
}
return false;
}
@Override
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
if (D3DBufImgOps.renderImageWithOp(sg, img, op, x, y)) {
return;
}
}
img = op.filter(img, null);
}
copyImage(sg, img, x, y, null);
}
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
img = op.filter(img, null);
}
}
copyImage(sg, img, x, y, null);
}
@Override
public void transformImage(SunGraphics2D sg, BufferedImage img,
BufferedImageOp op, int x, int y)
{
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y,
atop.getTransform(),
atop.getInterpolationType());
return;
} else {
if (D3DBufImgOps.renderImageWithOp(sg, img, op, x, y)) {
return;
}
}
img = op.filter(img, null);
}
copyImage(sg, img, x, y, null);
}
/**
* Some quick and dirty image scaling - please note that for best performance
* and quality you should use image rescaling libraries.
*/
@Override
public BufferedImage resample(BufferedImage bufferedImage, int width, int height) {
Dimension imageDimension = new Dimension(bufferedImage.getWidth(), bufferedImage.getHeight());
Dimension boundaryDimension = new Dimension(width, height);
Dimension scaledDimension = BufferedImageUtils.getScaledDimension(imageDimension, boundaryDimension);
double scaleX = scaledDimension.getWidth() / bufferedImage.getWidth();
double scaleY = scaledDimension.getHeight() / bufferedImage.getHeight();
AffineTransform scaleTransform = AffineTransform.getScaleInstance(scaleX, scaleY);
AffineTransformOp biLinearScaleOp = new AffineTransformOp(scaleTransform, AffineTransformOp.TYPE_BILINEAR);
return biLinearScaleOp.filter(
bufferedImage,
new BufferedImage(scaledDimension.width, scaledDimension.height, bufferedImage.getType()));
}
public static boolean isSimpleTranslate(SunGraphics2D sg) {
int ts = sg.transformState;
if (ts <= SunGraphics2D.TRANSFORM_INT_TRANSLATE) {
// Integer translates are always "simple"
return true;
}
if (ts >= SunGraphics2D.TRANSFORM_TRANSLATESCALE) {
// Scales and beyond are always "not simple"
return false;
}
// non-integer translates are only simple when not interpolating
if (sg.interpolationType == AffineTransformOp.TYPE_NEAREST_NEIGHBOR) {
return true;
}
return false;
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.Blit(src, dst,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
typeval, false);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Scale(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx1, int sy1,
int sx2, int sy2,
double dx1, double dy1,
double dx2, double dy2)
{
D3DBlitLoops.Blit(src, dst,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx1, sy1, sx2, sy2,
dx1, dy1, dx2, dy2,
typeval, false);
}
public SunGraphics2D(SurfaceData sd, Color fg, Color bg, Font f) {
surfaceData = sd;
foregroundColor = fg;
backgroundColor = bg;
transform = new AffineTransform();
stroke = defaultStroke;
composite = defaultComposite;
paint = foregroundColor;
imageComp = CompositeType.SrcOverNoEa;
renderHint = SunHints.INTVAL_RENDER_DEFAULT;
antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT;
fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF;
lcdTextContrast = lcdTextContrastDefaultValue;
interpolationHint = -1;
strokeHint = SunHints.INTVAL_STROKE_DEFAULT;
resolutionVariantHint = SunHints.INTVAL_RESOLUTION_VARIANT_DEFAULT;
interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR;
validateColor();
devScale = sd.getDefaultScale();
if (devScale != 1) {
transform.setToScale(devScale, devScale);
invalidateTransform();
}
font = f;
if (font == null) {
font = defaultFont;
}
setDevClip(sd.getBounds());
invalidatePipe();
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.Blit(src, dst,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
typeval, true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
OGLBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
false);
}
/**
* Sets the preferences for the rendering algorithms.
* Hint categories include controls for rendering quality and
* overall time/quality trade-off in the rendering process.
* @param hints The rendering hints to be set
* @see RenderingHints
*/
public void setRenderingHints(Map<?,?> hints) {
this.hints = null;
renderHint = SunHints.INTVAL_RENDER_DEFAULT;
antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT;
fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF;
lcdTextContrast = lcdTextContrastDefaultValue;
interpolationHint = -1;
interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR;
boolean customHintPresent = false;
Iterator<?> iter = hints.keySet().iterator();
while (iter.hasNext()) {
Object key = iter.next();
if (key == SunHints.KEY_RENDERING ||
key == SunHints.KEY_ANTIALIASING ||
key == SunHints.KEY_TEXT_ANTIALIASING ||
key == SunHints.KEY_FRACTIONALMETRICS ||
key == SunHints.KEY_TEXT_ANTIALIAS_LCD_CONTRAST ||
key == SunHints.KEY_STROKE_CONTROL ||
key == SunHints.KEY_INTERPOLATION)
{
setRenderingHint((Key) key, hints.get(key));
} else {
customHintPresent = true;
}
}
if (customHintPresent) {
this.hints = makeHints(hints);
}
invalidatePipe();
}
public void Scale(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx1, int sy1,
int sx2, int sy2,
double dx1, double dy1,
double dx2, double dy2)
{
OGLBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx1, sy1, sx2, sy2,
dx1, dy1, dx2, dy2,
true);
}
@Override
protected void renderImageXform(SunGraphics2D sg, Image img,
AffineTransform tx, int interpType,
int sx1, int sy1, int sx2, int sy2,
Color bgColor)
{
// punt to the MediaLib-based transformImage() in the superclass if:
// - bicubic interpolation is specified
// - a background color is specified and will be used
// - an appropriate TransformBlit primitive could not be found
if (interpType != AffineTransformOp.TYPE_BICUBIC) {
SurfaceData dstData = sg.surfaceData;
SurfaceData srcData =
dstData.getSourceSurfaceData(img,
sg.TRANSFORM_GENERIC,
sg.imageComp,
bgColor);
if (srcData != null && !isBgOperation(srcData, bgColor)) {
SurfaceType srcType = srcData.getSurfaceType();
SurfaceType dstType = dstData.getSurfaceType();
TransformBlit blit = TransformBlit.getFromCache(srcType,
sg.imageComp,
dstType);
if (blit != null) {
blit.Transform(srcData, dstData,
sg.composite, sg.getCompClip(),
tx, interpType,
sx1, sy1, 0, 0, sx2-sx1, sy2-sy1);
return;
}
}
}
super.renderImageXform(sg, img, tx, interpType,
sx1, sy1, sx2, sy2, bgColor);
}
public SunGraphics2D(SurfaceData sd, Color fg, Color bg, Font f) {
surfaceData = sd;
foregroundColor = fg;
backgroundColor = bg;
transform = new AffineTransform();
stroke = defaultStroke;
composite = defaultComposite;
paint = foregroundColor;
imageComp = CompositeType.SrcOverNoEa;
renderHint = SunHints.INTVAL_RENDER_DEFAULT;
antialiasHint = SunHints.INTVAL_ANTIALIAS_OFF;
textAntialiasHint = SunHints.INTVAL_TEXT_ANTIALIAS_DEFAULT;
fractionalMetricsHint = SunHints.INTVAL_FRACTIONALMETRICS_OFF;
lcdTextContrast = lcdTextContrastDefaultValue;
interpolationHint = -1;
strokeHint = SunHints.INTVAL_STROKE_DEFAULT;
interpolationType = AffineTransformOp.TYPE_NEAREST_NEIGHBOR;
validateColor();
devScale = sd.getDefaultScale();
if (devScale != 1) {
transform.setToScale(devScale, devScale);
invalidateTransform();
}
font = f;
if (font == null) {
font = defaultFont;
}
setDevClip(sd.getBounds());
invalidatePipe();
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
OGLBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Scale(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx1, int sy1,
int sx2, int sy2,
double dx1, double dy1,
double dx2, double dy2)
{
OGLBlitLoops.Blit(src, dst,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx1, sy1, sx2, sy2,
dx1, dy1, dx2, dy2,
typeval, false);
}
/** Returns a mask with the same image, resized to (w,h). */
public ImageFieldMask scaleTo(Dimension size) {
int w = size.width;
int h = size.height;
BufferedImage grayImage = this.image;
BufferedImage scaledImage = new BufferedImage(w, h, BufferedImage.TYPE_BYTE_GRAY);
AffineTransform at = new AffineTransform();
at.scale(((double)w) / grayImage.getWidth(), ((double) h) / grayImage.getHeight());
AffineTransformOp scaleOp = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
scaleOp.filter(grayImage, scaledImage);
return new ImageFieldMask(scaledImage);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.Blit(src, dst,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
typeval, true);
}
public void Blit(SurfaceData src, SurfaceData dst,
Composite comp, Region clip,
int sx, int sy, int dx, int dy, int w, int h)
{
D3DBlitLoops.IsoBlit(src, dst,
null, null,
comp, clip, null,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR,
sx, sy, sx+w, sy+h,
dx, dy, dx+w, dy+h,
false);
}