/** Draws a pixel in the current UV plane at specified UV coordinates. */
public void drawPixel(final long u, final long v) {
if (u < 0) return;
if (v < 0) return;
if (u > maxU) return;
if (v > maxV) return;
accessor.setPosition(u, uAxis);
accessor.setPosition(v, vAxis);
// draw in single channel mode
if (preferredChannel >= 0) {
final double value = intensity * channels.getChannelValue(preferredChannel);
if (channelAxis != -1) accessor.setPosition(preferredChannel, channelAxis);
accessor.get().setReal(value);
} else { // draw across all channels
long numChannels = 1;
if (channelAxis != -1) numChannels = dataset.dimension(channelAxis);
for (long c = 0; c < numChannels; c++) {
final double value = intensity * channels.getChannelValue(c);
if (channelAxis != -1) accessor.setPosition(c, channelAxis);
accessor.get().setReal(value);
}
}
dataset.setDirty(true);
}
