Java AffineTransformOp.TYPE_NEAREST_NEIGHBOR属性代码示例

@Override
public BufferedImage run(final @NonNull BufferedImage image) {
    if (isFlippedHorizontally || isFlippedVertically) {
        final double scaleX = isFlippedHorizontally ? -1 : 1;
        final double scaleY = isFlippedVertically ? -1 : 1;
        final double translateX = isFlippedHorizontally ? -image.getWidth() : 0;
        final double translateY = isFlippedVertically ? -image.getHeight() : 0;

        final AffineTransform tx = AffineTransform.getScaleInstance(scaleX, scaleY);
        tx.translate(translateX, translateY);

        final BufferedImageOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
        return op.filter(image, null);
    }

    return image;
}
 

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;
}
 

/**
 * Adds a shadow effect by executing the following steps: 1. Transform visible
 * pixels to a semi-transparent black 2. Flip the image vertically 3. Scale it
 * down 4. Render original image and shadow on a buffered image
 *
 * @param image
 *          the image
 * @param xOffset
 *          the x offset
 * @param yOffset
 *          the y offset
 * @return the buffered image
 */
public static BufferedImage addShadow(final BufferedImage image, final int xOffset, final int yOffset) {
  if (image == null) {
    return image;
  }

  // Transform visible pixels to a semi-transparent black
  final BufferedImage shadowImage = flashVisiblePixels(image, new Color(0, 0, 0, 30));
  if (shadowImage == null) {
    return image;
  }

  final AffineTransform tx = new AffineTransform();

  // Flip the image vertically
  tx.concatenate(AffineTransform.getScaleInstance(1, -0.15));
  tx.concatenate(AffineTransform.getTranslateInstance(0, -shadowImage.getHeight()));
  final AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
  final BufferedImage rotatedImage = op.filter(shadowImage, null);

  final BufferedImage shadow = getCompatibleImage(image.getWidth(), image.getHeight() + rotatedImage.getHeight());
  final Graphics2D g2D = shadow.createGraphics();
  g2D.drawImage(rotatedImage, xOffset, yOffset, null);
  g2D.drawImage(image, 0, 0, null);

  g2D.dispose();

  return shadow;
}
 

/**
 * Legacy method for drawing 8x8 tiles
 * @param g
 * @param x
 * @param y
 * @param scale
 */
public void draw(Graphics g, int x, int y, int scale) {
	BufferedImage tileimg = getImage();
	BufferedImage scaledimg = new BufferedImage(
			tileimg.getWidth() * scale, tileimg.getHeight() * scale, BufferedImage.TYPE_INT_ARGB);
	AffineTransform at = new AffineTransform();
	at.scale(scale, scale);
	AffineTransformOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
	op.filter(tileimg, scaledimg);
	g.drawImage(scaledimg, x, y, null);
}
 

@Override
public void run() {
    BufferedImage img = new BufferedImage(display.getWidth(), display.getHeight(), BufferedImage.TYPE_INT_RGB);
    for (int y = 0; y < display.getHeight(); y++) {
        for (int x = 0; x < display.getWidth(); x++) {
            int idx = getIndex(x, y);
            int nIdx = 3 * idx;
            int r = ((int) (rgbValues[nIdx++] * 255)); // red component 0...255
            int g = ((int) (rgbValues[nIdx++] * 255)); // green component 0...255
            int b = ((int) (rgbValues[nIdx] * 255)); // blue component 0...255
            int col = (r << 16) | (g << 8) | b;
            img.setRGB(x, y, col);
        }
    }
    AffineTransform tx = AffineTransform.getScaleInstance(1, -1);
    tx.translate(0, -img.getHeight(null));
    AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
    img = op.filter(img, null);
    SimpleDateFormat sdfDate = new SimpleDateFormat("_yyyy_MM_dd_HH_mm_ss");//dd/MM/yyyy
    Date now = new Date();
    String strDate = sdfDate.format(now);
    try {
        ImageIO.write(img, "png", new File(String.format("%s/ImageCreator%s.png", path, strDate)));
    } catch (IOException ex) {
        log.warning("can not save Image, Error: " + ex.toString());
    }
}
 

@Override
public void run() {
    BufferedImage img = new BufferedImage(display.getWidth(), display.getHeight(), BufferedImage.TYPE_INT_RGB);
    for (int y = 0; y < display.getHeight(); y++) {
        for (int x = 0; x < display.getWidth(); x++) {
            int idx = getIndex(x, y);
            int nIdx = 3 * idx;
            int r = ((int) (rgbValues[nIdx++] * 255)); // red component 0...255
            int g = ((int) (rgbValues[nIdx++] * 255)); // green component 0...255
            int b = ((int) (rgbValues[nIdx] * 255)); // blue component 0...255
            int col = (r << 16) | (g << 8) | b;
            img.setRGB(x, y, col);
        }
    }
    AffineTransform tx = AffineTransform.getScaleInstance(1, -1);  //alligns the image correctly
    tx.translate(0, -img.getHeight(null));
    AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
    img = op.filter(img, null);
    SimpleDateFormat sdfDate = new SimpleDateFormat("_yyyy_MM_dd_HH_mm_ss");//dd/MM/yyyy
    Date now = new Date();
    String strDate = sdfDate.format(now);
    try {
        ImageIO.write(img, "png", new File(String.format("%s/ImageCreator%s.png", path, strDate)));
    } catch (IOException ex) {
        log.warning("can not save Image, Error: " + ex.toString());
    }
}
 

/**
 * 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 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();
}
 

@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
    //     - the source surface is neither a texture nor render-to-texture
    //       surface, and a non-default interpolation hint is specified
    //       (we can only control the filtering for texture->surface
    //       copies)
    //         REMIND: we should tweak the sw->texture->surface
    //         transform case to handle filtering appropriately
    //         (see 4841762)...
    //     - an appropriate TransformBlit primitive could not be found
    if (interpType != AffineTransformOp.TYPE_BICUBIC) {
        SurfaceData dstData = sg.surfaceData;
        SurfaceData srcData =
            dstData.getSourceSurfaceData(img,
                                         SunGraphics2D.TRANSFORM_GENERIC,
                                         sg.imageComp,
                                         bgColor);

        if (srcData != null &&
            !isBgOperation(srcData, bgColor) &&
            (srcData.getSurfaceType() == OGLSurfaceData.OpenGLTexture ||
             srcData.getSurfaceType() == OGLSurfaceData.OpenGLSurfaceRTT ||
             interpType == AffineTransformOp.TYPE_NEAREST_NEIGHBOR))
        {
            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);
}
 

/**
 * Draw layers to a Graphics context
 * @param g The context to which the layers will be drawn
 * @param scale The amount by which the image should be scaled up
 * @param mask Which layers to draw
 * @param enableAB Use GBA-style alhpa blending
 */
public void draw(Graphics g, int scale, int mask, boolean enableAB) {
	BufferedImage canvas = new BufferedImage((width << 4) * scale, (height << 4) * scale,
			BufferedImage.TYPE_INT_ARGB);
	
	// Draw the layers in the appropriate order
	for(int i : drawOrder()) {
		
		// Only draw layers enabled by caller's mask
		if(((mask >> i) & 1) == 1 && layerProperties[i] != 0) {
			
			// Render the layer
			BufferedImage layerimg = getRenderedLayer(i);
			
			// Scale the layer graphics
			BufferedImage scaledimg = new BufferedImage(
					layerimg.getWidth() * scale, layerimg.getHeight() * scale, BufferedImage.TYPE_INT_ARGB);
			AffineTransform at = new AffineTransform();
			at.scale(scale, scale);
			AffineTransformOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
			op.filter(layerimg, scaledimg);
			
			// Apply alpha to layer 0 if enabled
			if(i == 0 && enableAB && alphaBlendingLevel < 1) {
				for(int j = 0; j < scaledimg.getHeight(); ++j) {
					for(int k = 0; k < scaledimg.getWidth(); ++k) {
						int composite = scaledimg.getRGB(k, j);
						// Only modify alpha of opaque values
						if((composite & 0xFF000000) != 0) {
							int target = canvas.getRGB(k, j);
							int dr = Math.min(248, (target & 0xFF) +
									(int) ((composite & 0xFF) * alphaBlendingLevel));
							int dg = Math.min(248, ((target >> 8) & 0xFF) +
									(int) (((composite >> 8) & 0xFF) * alphaBlendingLevel));
							int db = Math.min(248, ((target >> 16) & 0xFF) +
									(int) (((composite >> 16) & 0xFF) * alphaBlendingLevel));
							canvas.setRGB(k, j, dr | (dg << 8) | (db << 16) | 0xFF000000);
						}
					}
				}
			} else {
				Graphics cg = canvas.getGraphics();
				cg.drawImage(scaledimg, 0, 0, null);
				cg.dispose();
			}
		}
	}
	g.drawImage(canvas, 0, 0, null);
}
 

protected boolean tryCopyOrScale(SunGraphics2D sg,
                                 Image img,
                                 int sx1, int sy1,
                                 int sx2, int sy2,
                                 Color bgColor, int interpType,
                                 double coords[])
{
    double dx1 = coords[0];
    double dy1 = coords[1];
    double dx2 = coords[2];
    double dy2 = coords[3];
    double dw = dx2 - dx1;
    double dh = dy2 - dy1;

    /* If any of the destination coordinates exceed the integer range,
     * then the calculations performed in calls made here cannot be
     * guaranteed to be correct, or to converge (terminate).
     * So return out of here, deferring to code that can handle this.
     */
    if (dx1 < Integer.MIN_VALUE || dx1 > Integer.MAX_VALUE ||
        dy1 < Integer.MIN_VALUE || dy1 > Integer.MAX_VALUE ||
        dx2 < Integer.MIN_VALUE || dx2 > Integer.MAX_VALUE ||
        dy2 < Integer.MIN_VALUE || dy2 > Integer.MAX_VALUE)
    {
        return false;
    }

    // First check if width and height are very close to img w&h.
    if (closeToInteger(sx2-sx1, dw) && closeToInteger(sy2-sy1, dh)) {
        // Round location to nearest pixel and then test
        // if it will cause interpolation anomalies.
        int idx = (int) Math.floor(dx1 + 0.5);
        int idy = (int) Math.floor(dy1 + 0.5);
        if (interpType == AffineTransformOp.TYPE_NEAREST_NEIGHBOR ||
            (closeToInteger(idx, dx1) && closeToInteger(idy, dy1)))
        {
            renderImageCopy(sg, img, bgColor,
                            idx, idy,
                            sx1, sy1, sx2-sx1, sy2-sy1);
            return true;
        }
    }
    // (For now) We can only use our ScaledBlits if the image
    // is upright (i.e. dw & dh both > 0)
    if (dw > 0 && dh > 0) {
        if (renderImageScale(sg, img, bgColor, interpType,
                             sx1, sy1, sx2, sy2,
                             dx1, dy1, dx2, dy2))
        {
            return true;
        }
    }
    return false;
}
 

/**
 * We use OpenGL's texture coordinate generator to automatically
 * map the TexturePaint image to the geometry being rendered.  The
 * generator uses two separate plane equations that take the (x,y)
 * location (in device space) of the fragment being rendered to
 * calculate (u,v) texture coordinates for that fragment:
 *     u = Ax + By + Cz + Dw
 *     v = Ex + Fy + Gz + Hw
 *
 * Since we use a 2D orthographic projection, we can assume that z=0
 * and w=1 for any fragment.  So we need to calculate appropriate
 * values for the plane equation constants (A,B,D) and (E,F,H) such
 * that {u,v}=0 for the top-left of the TexturePaint's anchor
 * rectangle and {u,v}=1 for the bottom-right of the anchor rectangle.
 * We can easily make the texture image repeat for {u,v} values
 * outside the range [0,1] by specifying the GL_REPEAT texture wrap
 * mode.
 *
 * Calculating the plane equation constants is surprisingly simple.
 * We can think of it as an inverse matrix operation that takes
 * device space coordinates and transforms them into user space
 * coordinates that correspond to a location relative to the anchor
 * rectangle.  First, we translate and scale the current user space
 * transform by applying the anchor rectangle bounds.  We then take
 * the inverse of this affine transform.  The rows of the resulting
 * inverse matrix correlate nicely to the plane equation constants
 * we were seeking.
 */
private static void setTexturePaint(RenderQueue rq,
                                    SunGraphics2D sg2d,
                                    TexturePaint paint,
                                    boolean useMask)
{
    BufferedImage bi = paint.getImage();
    SurfaceData dstData = sg2d.surfaceData;
    SurfaceData srcData =
        dstData.getSourceSurfaceData(bi, SunGraphics2D.TRANSFORM_ISIDENT,
                                     CompositeType.SrcOver, null);
    boolean filter =
        (sg2d.interpolationType !=
         AffineTransformOp.TYPE_NEAREST_NEIGHBOR);

    // calculate plane equation constants
    AffineTransform at = (AffineTransform)sg2d.transform.clone();
    Rectangle2D anchor = paint.getAnchorRect();
    at.translate(anchor.getX(), anchor.getY());
    at.scale(anchor.getWidth(), anchor.getHeight());

    double xp0, xp1, xp3, yp0, yp1, yp3;
    try {
        at.invert();
        xp0 = at.getScaleX();
        xp1 = at.getShearX();
        xp3 = at.getTranslateX();
        yp0 = at.getShearY();
        yp1 = at.getScaleY();
        yp3 = at.getTranslateY();
    } catch (java.awt.geom.NoninvertibleTransformException e) {
        xp0 = xp1 = xp3 = yp0 = yp1 = yp3 = 0.0;
    }

    // assert rq.lock.isHeldByCurrentThread();
    rq.ensureCapacityAndAlignment(68, 12);
    RenderBuffer buf = rq.getBuffer();
    buf.putInt(SET_TEXTURE_PAINT);
    buf.putInt(useMask ? 1 : 0);
    buf.putInt(filter ? 1 : 0);
    buf.putLong(srcData.getNativeOps());
    buf.putDouble(xp0).putDouble(xp1).putDouble(xp3);
    buf.putDouble(yp0).putDouble(yp1).putDouble(yp3);
}