java.awt.geom.AffineTransform.getScaleInstance()方法的使用及代码示例

x33g5p2x  于2022-01-15 转载在 其他  
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本文整理了Java中java.awt.geom.AffineTransform.getScaleInstance()方法的一些代码示例，展示了AffineTransform.getScaleInstance()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。AffineTransform.getScaleInstance()方法的具体详情如下：
包路径：java.awt.geom.AffineTransform
类名称：AffineTransform
方法名：getScaleInstance

AffineTransform.getScaleInstance介绍

暂无

代码示例

代码示例来源：origin: plantuml/plantuml

  1. public EmptyImageBuilder(int width, int height, Color background, double dpiFactor) {
  2.   this(width * dpiFactor, height * dpiFactor, background);
  3.   if (dpiFactor != 1.0) {
  4.     g2d.setTransform(AffineTransform.getScaleInstance(dpiFactor, dpiFactor));
  5.   }
  6. }

代码示例来源：origin: libgdx/libgdx

  1. /**
  2.  * Draws the glyph to the given image, upscaled by a factor of {@link #scale}.
  3.  * 
  4.  * @param image the image to draw to
  5.  * @param glyph the glyph to draw
  6.  */
  7. private void drawGlyph(BufferedImage image, Glyph glyph) {
  8.   Graphics2D inputG = (Graphics2D) image.getGraphics();
  9.   inputG.setTransform(AffineTransform.getScaleInstance(scale, scale));
  10.   // We don't really want anti-aliasing (we'll discard it anyway),
  11.   // but accurate positioning might improve the result slightly
  12.   inputG.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
  13.   inputG.setColor(Color.WHITE);
  14.   inputG.fill(glyph.getShape());
  15. }

代码示例来源：origin: libgdx/libgdx

  1. /**
  2.  * Draws the glyph to the given image, upscaled by a factor of {@link #scale}.
  3.  * 
  4.  * @param image the image to draw to
  5.  * @param glyph the glyph to draw
  6.  */
  7. private void drawGlyph(BufferedImage image, Glyph glyph) {
  8.   Graphics2D inputG = (Graphics2D) image.getGraphics();
  9.   inputG.setTransform(AffineTransform.getScaleInstance(scale, scale));
  10.   // We don't really want anti-aliasing (we'll discard it anyway),
  11.   // but accurate positioning might improve the result slightly
  12.   inputG.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS, RenderingHints.VALUE_FRACTIONALMETRICS_ON);
  13.   inputG.setColor(Color.WHITE);
  14.   inputG.fill(glyph.getShape());
  15. }

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

  1. private static BufferedImage verticalFlip(BufferedImage original) {
  2.   AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
  3.   tx.translate(0, -original.getHeight());
  4.   AffineTransformOp transformOp = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
  5.   BufferedImage awtImage = new BufferedImage(original.getWidth(), original.getHeight(), BufferedImage.TYPE_INT_BGR);
  6.   Graphics2D g2d = awtImage.createGraphics();
  7.   g2d.setRenderingHint(RenderingHints.KEY_RENDERING,
  8.              RenderingHints.VALUE_RENDER_SPEED);
  9.   g2d.drawImage(original, transformOp, 0, 0);
  10.   g2d.dispose();
  11.   return awtImage;
  12. }

代码示例来源：origin: ivan-vasilev/neuralnetworks

  1. @Override
  2. public void addAugmentedImages(List<BufferedImage> images)
  3. {
  4.   for (int i = 0, l = images.size(); i < l; i++)
  5.   {
  6.     BufferedImage source = images.get(i);
  7.     AffineTransform tx = AffineTransform.getScaleInstance(-1.0, 1.0);
  8.     tx.translate(-source.getWidth(), 0);
  9.     AffineTransformOp tr = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
  10.     images.add(tr.filter(source, null));
  11.   }
  12. }

代码示例来源：origin: ivan-vasilev/neuralnetworks

  1. @Override
  2. public void addAugmentedImages(List<BufferedImage> images)
  3. {
  4.   for (int i = 0, l = images.size(); i < l; i++)
  5.   {
  6.     BufferedImage source = images.get(i);
  7.     AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
  8.     tx.translate(0, -source.getHeight(null));
  9.     AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
  10.     images.add(op.filter(source, null));
  11.   }
  12. }

代码示例来源：origin: looly/hutool

  1. /**
  2.  * 根据文字创建PNG图片
  3.  * 
  4.  * @param str 文字
  5.  * @param font 字体{@link Font}
  6.  * @param backgroundColor 背景颜色
  7.  * @param fontColor 字体颜色
  8.  * @param out 图片输出地
  9.  * @throws IORuntimeException IO异常
  10.  */
  11. public static void createImage(String str, Font font, Color backgroundColor, Color fontColor, ImageOutputStream out) throws IORuntimeException {
  12.   // 获取font的样式应用在str上的整个矩形
  13.   Rectangle2D r = font.getStringBounds(str, new FontRenderContext(AffineTransform.getScaleInstance(1, 1), false, false));
  14.   int unitHeight = (int) Math.floor(r.getHeight());// 获取单个字符的高度
  15.   // 获取整个str用了font样式的宽度这里用四舍五入后+1保证宽度绝对能容纳这个字符串作为图片的宽度
  16.   int width = (int) Math.round(r.getWidth()) + 1;
  17.   int height = unitHeight + 3;// 把单个字符的高度+3保证高度绝对能容纳字符串作为图片的高度
  18.   // 创建图片
  19.   BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
  20.   Graphics g = image.getGraphics();
  21.   g.setColor(backgroundColor);
  22.   g.fillRect(0, 0, width, height);// 先用背景色填充整张图片,也就是背景
  23.   g.setColor(fontColor);
  24.   g.setFont(font);// 设置画笔字体
  25.   g.drawString(str, 0, font.getSize());// 画出字符串
  26.   g.dispose();
  27.   writePng(image, out);
  28. }

代码示例来源：origin: looly/hutool

  1. /**
  2.  * 根据文字创建PNG图片
  3.  * 
  4.  * @param str 文字
  5.  * @param font 字体{@link Font}
  6.  * @param backgroundColor 背景颜色
  7.  * @param fontColor 字体颜色
  8.  * @param out 图片输出地
  9.  * @throws IORuntimeException IO异常
  10.  */
  11. public static void createImage(String str, Font font, Color backgroundColor, Color fontColor, ImageOutputStream out) throws IORuntimeException {
  12.   // 获取font的样式应用在str上的整个矩形
  13.   Rectangle2D r = font.getStringBounds(str, new FontRenderContext(AffineTransform.getScaleInstance(1, 1), false, false));
  14.   int unitHeight = (int) Math.floor(r.getHeight());// 获取单个字符的高度
  15.   // 获取整个str用了font样式的宽度这里用四舍五入后+1保证宽度绝对能容纳这个字符串作为图片的宽度
  16.   int width = (int) Math.round(r.getWidth()) + 1;
  17.   int height = unitHeight + 3;// 把单个字符的高度+3保证高度绝对能容纳字符串作为图片的高度
  18.   // 创建图片
  19.   BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_BGR);
  20.   Graphics g = image.getGraphics();
  21.   g.setColor(backgroundColor);
  22.   g.fillRect(0, 0, width, height);// 先用背景色填充整张图片,也就是背景
  23.   g.setColor(fontColor);
  24.   g.setFont(font);// 设置画笔字体
  25.   g.drawString(str, 0, font.getSize());// 画出字符串
  26.   g.dispose();
  27.   writePng(image, out);
  28. }

代码示例来源：origin: plantuml/plantuml

  1. private static AffineTransformation createSimple(String value) {
  2.   Matcher m = rotate.matcher(StringUtils.trin(value));
  3.   if (m.find()) {
  4.     final double angle = Double.parseDouble(m.group(1));
  5.     return new AffineTransformation(AffineTransform.getRotateInstance(angle * Math.PI / 180.0));
  6.   }
  7.   m = shear.matcher(value);
  8.   if (m.find()) {
  9.     final double shx = Double.parseDouble(m.group(1));
  10.     final double shy = Double.parseDouble(m.group(2));
  11.     return new AffineTransformation(AffineTransform.getShearInstance(shx, shy));
  12.   }
  13.   m = translate.matcher(value);
  14.   if (m.find()) {
  15.     final double tx = Double.parseDouble(m.group(1));
  16.     final double ty = Double.parseDouble(m.group(2));
  17.     return new AffineTransformation(AffineTransform.getTranslateInstance(tx, ty));
  18.   }
  19.   m = scale.matcher(value);
  20.   if (m.find()) {
  21.     final double scalex = Double.parseDouble(m.group(1));
  22.     final double scaley = Double.parseDouble(m.group(2));
  23.     return new AffineTransformation(AffineTransform.getScaleInstance(scalex, scaley));
  24.   }
  25.   m = color.matcher(value);
  26.   if (m.find()) {
  27.     return new AffineTransformation(new AffineTransform());
  28.   }
  29.   return null;
  30. }

代码示例来源：origin: igniterealtime/Openfire

  1. final AffineTransform scale = AffineTransform.getScaleInstance( (double) targetDimension / (double) targetWidth, (double) targetDimension / (double) targetHeight );
  2. final Graphics2D g = resizedAvatar.createGraphics();
  3. g.drawRenderedImage( avatar, scale );

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

  1. /**
  2.  * Resizes the image to the given width and height.
  3.  * @param source
  4.  *            the source image (this remains untouched, the new image instance is created)
  5.  * @param width
  6.  *            the target image width
  7.  * @param height
  8.  *            the target image height
  9.  * @return the resized image
  10.  */
  11. public static Image resizeTo(Image source, int width, int height) {
  12.   BufferedImage sourceImage = ImageToAwt.convert(source, false, false, 0);
  13.   double scaleX = width / (double) sourceImage.getWidth();
  14.   double scaleY = height / (double) sourceImage.getHeight();
  15.   AffineTransform scaleTransform = AffineTransform.getScaleInstance(scaleX, scaleY);
  16.   AffineTransformOp bilinearScaleOp = new AffineTransformOp(scaleTransform, AffineTransformOp.TYPE_BILINEAR);
  17.   BufferedImage scaledImage = bilinearScaleOp.filter(sourceImage, new BufferedImage(width, height, sourceImage.getType()));
  18.   return ImageUtils.toJmeImage(scaledImage, source.getFormat());
  19. }

代码示例来源：origin: org.apache.poi/poi

  1. trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
  2. trans.concatenate(
  3. AffineTransform.getScaleInstance(1, fontHeightMultiple)
  4. );
  5. bounds = layout.getOutline(trans).getBounds();

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

  1. AffineTransform trans = AffineTransform.getScaleInstance(1, -1);
  2. trans.translate(0, -img.getHeight(null));
  3. AffineTransformOp op = new AffineTransformOp(trans, AffineTransformOp.TYPE_BILINEAR);

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

  1. AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
  2. tx.translate(0, -img.getHeight());
  3. transformOp = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);

代码示例来源：origin: geotools/geotools

  1. /** Apply scaling parameter to the ROI to return the scaled version */
  2. private ROI computeScaledROI(double[] scalingParams) throws NoninvertibleTransformException {
  3.   ROI newRoi = null;
  4.   if (roi != null) {
  5.     AffineTransform sTx =
  6.         AffineTransform.getScaleInstance(scalingParams[0], scalingParams[1]);
  7.     sTx.concatenate(
  8.         AffineTransform.getTranslateInstance(scalingParams[2], scalingParams[3]));
  9.     newRoi = roi.transform(sTx.createInverse());
  10.   }
  11.   return newRoi;
  12. }

代码示例来源：origin: vsch/flexmark-java

  1. public static BufferedImage scaleImage(BufferedImage sourceImage, int newWidth, int newHeight, int opType) {
  2.   if (sourceImage == null) {
  3.     return null;
  4.   }
  5.   if (newWidth == 0 || newHeight == 0) {
  6.     return null;
  7.   }
  8.   AffineTransform at = AffineTransform.getScaleInstance(
  9.       (double) newWidth / sourceImage.getWidth(null),
  10.       (double) newHeight / sourceImage.getHeight(null)
  11.   );
  12.   //  http://nickyguides.digital-digest.com/bilinear-vs-bicubic.htm
  13.   AffineTransformOp op = new AffineTransformOp(at, opType != 0 ? opType : AffineTransformOp.TYPE_BILINEAR);
  14.   return op.filter(sourceImage, null);
  15. }

代码示例来源：origin: apache/pdfbox

  1. public Rectangle2D getBounds()
  2.   {
  3.     Point2D size = new Point2D.Double(pageSize.getWidth(), pageSize.getHeight());
  4.     // apply the underlying Graphics2D device's DPI transform and y-axis flip
  5.     Matrix m = new Matrix(xform);
  6.     AffineTransform dpiTransform = AffineTransform.getScaleInstance(Math.abs(m.getScalingFactorX()), Math.abs(m.getScalingFactorY()));
  7.     size = dpiTransform.transform(size, size);
  8.     // Flip y
  9.     return new Rectangle2D.Double(minX - pageSize.getLowerLeftX() * Math.abs(m.getScalingFactorX()),
  10.         size.getY() - minY - height + pageSize.getLowerLeftY() * Math.abs(m.getScalingFactorY()),
  11.         width, height);
  12.   }
  13. }

代码示例来源：origin: geotools/geotools

  1. @Test
  2.   public void testBounds() {
  3.     GeneralPath gp = new GeneralPath();
  4.     gp.moveTo(0f, 0f);
  5.     gp.lineTo(1, 0.3);
  6.     gp.lineTo(0f, 0.6f);
  7.     gp.closePath();
  9.     AffineTransform at = AffineTransform.getScaleInstance(1.5, 1.5);
  10.     TransformedShape ts = new TransformedShape(gp, at);
  12.     assertEquals(new Rectangle(0, 0, 2, 1), ts.getBounds());
  13.   }
  14. }

代码示例来源：origin: geotools/geotools

  1. public void testOGCScaleAffineProjected() throws Exception {
  2.   // 1 pixel == 500 m  =>  0.00028 m [ screen] == 500 m [world]
  3.   // => scaleDenominator = 500/0.00028
  4.   final AffineTransform screenToWord = AffineTransform.getScaleInstance(500, 500);
  5.   final AffineTransform worldToScreen = screenToWord.createInverse();
  6.   final CoordinateReferenceSystem crs = DefaultEngineeringCRS.CARTESIAN_2D;
  7.   double scale;
  8.   scale = RendererUtilities.calculateOGCScaleAffine(crs, worldToScreen, new HashMap());
  9.   assertEquals(500 / 0.00028, scale, 0.0001);
  10.   worldToScreen.rotate(1.0);
  11.   scale = RendererUtilities.calculateOGCScaleAffine(crs, worldToScreen, new HashMap());
  12.   assertEquals(500 / 0.00028, scale, 0.0001);
  13.   worldToScreen.translate(100.0, 100.0);
  14.   scale = RendererUtilities.calculateOGCScaleAffine(crs, worldToScreen, new HashMap());
  15.   assertEquals(500 / 0.00028, scale, 0.0001);
  16. }

代码示例来源：origin: geotools/geotools

  1. /**
  2.  * Test the pass through transform using an affine transform. The "passthrough" of such
  3.  * transform are optimized in a special way.
  4.  */
  5. @Test
  6. public void testLinear() throws FactoryException, TransformException {
  7.   runTest(
  8.       mtFactory.createAffineTransform(
  9.           new GeneralMatrix(AffineTransform.getScaleInstance(4, 2))));
  10. }

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