use of org.diirt.util.array.ArrayByte in project org.csstudio.display.builder by kasemir.
the class ImagePlot method setCrosshairLocation.
/**
* Set location of crosshair
* @param x_val
* @param y_val
*/
public void setCrosshairLocation(final double x_val, final double y_val, final RTImagePlotListener listener) {
if (Double.isNaN(x_val) || Double.isNaN(y_val)) {
if (crosshair_position == null)
return;
crosshair_position = null;
if (listener != null)
listener.changedCursorInfo(Double.NaN, Double.NaN, -1, -1, Double.NaN);
requestRedraw();
return;
}
final Point2D pos = new Point2D(x_val, y_val);
if (pos.equals(crosshair_position))
return;
crosshair_position = pos;
if (listener != null)
listener.changedCrosshair(x_val, y_val);
// Location as coordinate in image
// No "+0.5" rounding! Truncate to get full pixel offsets,
// don't jump to next pixel when mouse moves beyond 'half' of the current pixel.
// Use -1 to mark location outside of data width resp. height.
int image_x = (int) (data_width * (x_val - min_x) / (max_x - min_x));
if (image_x < 0)
image_x = -1;
else if (image_x >= data_width)
image_x = -1;
// Mouse and image coords for Y go 'down'
int image_y = (int) (data_height * (max_y - y_val) / (max_y - min_y));
if (image_y < 0)
image_y = -1;
else if (image_y >= data_height)
image_y = -1;
final ListNumber data = image_data;
double pixel = Double.NaN;
if (data != null && image_x >= 0 && image_y >= 0) {
final int offset = image_x + image_y * data_width;
try {
if (unsigned_data) {
if (data instanceof ArrayByte)
pixel = Byte.toUnsignedInt(data.getByte(offset));
else if (data instanceof ArrayShort)
pixel = Short.toUnsignedInt(data.getShort(offset));
else if (data instanceof ArrayInt)
pixel = Integer.toUnsignedLong(data.getInt(offset));
else
pixel = data.getDouble(offset);
} else
pixel = data.getDouble(offset);
} catch (Throwable ex) {
// Catch ArrayIndexOutOfBoundsException or other internal errors of ListNumber
logger.log(Level.WARNING, "Error accessing pixel " + image_x + ", " + image_y + " of data with size " + data.size());
// leave pixel == Double.NaN;
}
}
if (listener != null)
listener.changedCursorInfo(x_val, y_val, image_x, image_y, pixel);
requestRedraw();
}
use of org.diirt.util.array.ArrayByte in project org.csstudio.display.builder by kasemir.
the class ImagePlot method updateImageBuffer.
/**
* Draw all components into image buffer
*/
@Override
protected BufferedImage updateImageBuffer() {
// Would like to use JFX WritableImage,
// but rendering problem on Linux (sandbox.ImageScaling),
// and no way to disable the color interpolation that 'smears'
// the scaled image.
// (http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8091877).
// So image is prepared in AWT and then converted to JFX
logger.log(Level.FINE, "updateImageBuffer");
final Rectangle area_copy = area;
if (area_copy.width <= 0 || area_copy.height <= 0)
return null;
final BufferUtil buffer = buffers.getBufferedImage(area_copy.width, area_copy.height);
if (buffer == null)
return null;
final BufferedImage image = buffer.getImage();
final Graphics2D gc = buffer.getGraphics();
gc.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
gc.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
gc.setRenderingHint(RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_SPEED);
gc.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
// Get safe copy of the data
// (not synchronized, i.e. width vs. data may be inconsistent,
// but at least data won't change within this method)
final int data_width = this.data_width, data_height = this.data_height;
final ListNumber numbers = this.image_data;
final boolean unsigned = this.unsigned_data;
double min = this.min, max = this.max;
final VImageType type = this.vimage_type;
final ColorMappingFunction color_mapping = this.color_mapping;
ToDoubleFunction<IteratorNumber> next_sample_func = IteratorNumber::nextDouble;
boolean isRGB = type == VImageType.TYPE_RGB1 || type == VImageType.TYPE_RGB2 || type == VImageType.TYPE_RGB3;
@SuppressWarnings("unchecked") final ToIntFunction<IteratorNumber>[] next_rgb = new ToIntFunction[3];
if (numbers != null) {
if (isRGB) {
if (numbers instanceof ArrayShort) {
if (unsigned) {
next_rgb[0] = (iter) -> getUShortForRGB(iter) << 8 & 0xFF0000;
next_rgb[1] = (iter) -> getUShortForRGB(iter) & 0xFF00;
next_rgb[2] = (iter) -> getUShortForRGB(iter) >>> 8;
} else {
next_rgb[0] = (iter) -> getShortForRGB(iter) << 8 & 0xFF0000;
next_rgb[1] = (iter) -> getShortForRGB(iter) & 0xFF00;
next_rgb[2] = (iter) -> getShortForRGB(iter) >>> 8;
}
}
if (numbers instanceof ArrayInt) {
if (unsigned) {
next_rgb[0] = (iter) -> getUIntForRGB(iter) >>> 8 & 0xFF0000;
next_rgb[1] = (iter) -> getUIntForRGB(iter) >>> 16 & 0xFF00;
next_rgb[2] = (iter) -> getUIntForRGB(iter) >>> 24;
} else {
next_rgb[0] = (iter) -> getIntForRGB(iter) >>> 8 & 0xFF0000;
next_rgb[1] = (iter) -> getIntForRGB(iter) >>> 16 & 0xFF00;
next_rgb[2] = (iter) -> getIntForRGB(iter) >>> 24;
}
} else {
if (!(numbers instanceof ArrayByte))
logger.log(Level.WARNING, "Cannot handle rgb1 image data of type " + numbers.getClass().getName());
if (unsigned) {
next_rgb[0] = (iter) -> getUByteForRGB(iter) << 16;
next_rgb[1] = (iter) -> getUByteForRGB(iter) << 8;
next_rgb[2] = (iter) -> getUByteForRGB(iter);
} else {
next_rgb[0] = (iter) -> getByteForRGB(iter) << 16;
next_rgb[1] = (iter) -> getByteForRGB(iter) << 8;
next_rgb[2] = (iter) -> getByteForRGB(iter);
}
}
} else // is not RGB
{
if (unsigned) {
if (numbers instanceof ArrayShort)
next_sample_func = ImagePlot::getUnsignedShort;
else if (numbers instanceof ArrayByte)
next_sample_func = ImagePlot::getUnsignedByte;
else if (numbers instanceof ArrayInt)
next_sample_func = ImagePlot::getUnsignedInt;
else
logger.log(Level.WARNING, "Cannot handle unsigned data of type " + numbers.getClass().getName());
}
if (autoscale) {
// Compute min..max before layout of color bar
final IteratorNumber iter = numbers.iterator();
min = Double.MAX_VALUE;
max = Double.NEGATIVE_INFINITY;
while (iter.hasNext()) {
final double sample = next_sample_func.applyAsDouble(iter);
if (sample > max)
max = sample;
if (sample < min)
min = sample;
}
logger.log(Level.FINE, "Autoscale range {0} .. {1}", new Object[] { min, max });
}
}
}
// If log, min needs to be 1
if (colorbar_axis.isLogarithmic() && min < 1.0)
min = 1;
colorbar_axis.setValueRange(min, max);
if (need_layout.getAndSet(false))
computeLayout(gc, area_copy, min, max);
// Fill with a 'background' color
gc.setColor(background);
gc.fillRect(0, 0, area_copy.width, area_copy.height);
if (numbers != null) {
// Paint the image
gc.setClip(image_area.x, image_area.y, image_area.width, image_area.height);
final Object image_or_error = !isRGB ? drawData(data_width, data_height, numbers, next_sample_func, min, max, color_mapping) : drawDataRGB(data_width, data_height, numbers, next_rgb, type);
if (image_or_error instanceof BufferedImage) {
final BufferedImage unscaled = (BufferedImage) image_or_error;
// Transform from full axis range into data range,
// using the current 'zoom' state of each axis
final LinearScreenTransform t = new LinearScreenTransform();
AxisRange<Double> zoomed = x_axis.getValueRange();
t.config(min_x, max_x, 0, data_width);
// Round down .. up to always cover the image_area
final int src_x1 = Math.max(0, (int) t.transform(zoomed.getLow()));
final int src_x2 = Math.min(data_width, (int) (t.transform(zoomed.getHigh()) + 1));
// Pixels of the image need to be aligned to their axis location,
// especially when zoomed way in and the pixels are huge.
// Turn pixel back into axis value, and then determine its destination on screen.
final int dst_x1 = x_axis.getScreenCoord(t.inverse(src_x1));
final int dst_x2 = x_axis.getScreenCoord(t.inverse(src_x2));
// For Y axis, min_y == bottom == data_height
zoomed = y_axis.getValueRange();
t.config(min_y, max_y, data_height, 0);
final int src_y1 = Math.max(0, (int) t.transform(zoomed.getHigh()));
final int src_y2 = Math.min(data_height, (int) (t.transform(zoomed.getLow()) + 1));
final int dst_y1 = y_axis.getScreenCoord(t.inverse(src_y1));
final int dst_y2 = y_axis.getScreenCoord(t.inverse(src_y2));
switch(interpolation) {
case NONE:
gc.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
break;
case INTERPOLATE:
gc.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
break;
default:
// If image is smaller than screen area, show the actual pixels
if ((src_x2 - src_x1) < image_area.width && (src_y2 - src_y1) < image_area.height)
gc.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
else
// If image is larger than screen area, use best possible interpolation
// to avoid artifacts from statistically picking some specific nearest neighbor
gc.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
}
gc.drawImage(unscaled, dst_x1, dst_y1, dst_x2, dst_y2, src_x1, src_y1, src_x2, src_y2, /* ImageObserver */
null);
} else {
gc.setColor(Color.RED);
gc.setFont(x_axis.label_font);
gc.drawString(Objects.toString(image_or_error), image_area.x + 10, image_area.y + 20);
}
gc.setClip(0, 0, area_copy.width, area_copy.height);
}
// Axes
y_axis.paint(gc, image_area);
x_axis.paint(gc, image_area);
// Color bar
if (colorbar_area != null) {
final BufferedImage bar = drawColorBar(min, max, color_mapping);
gc.drawImage(bar, colorbar_area.x, colorbar_area.y, colorbar_area.width, colorbar_area.height, null);
colorbar_axis.paint(gc, colorbar_area);
}
// ROI uses X axis font
gc.setFont(x_axis.label_font);
for (RegionOfInterest roi : rois) drawROI(gc, roi);
return image;
}
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