Examples with CGBitmapInfo org.robovm.apple.coregraphics.CGBitmapInfo used on opensource projects

Example 1 with CGBitmapInfo

use of org.robovm.apple.coregraphics.CGBitmapInfo in project playn by threerings.

the class RoboAbstractImage method getRgb.

@Override
public void getRgb(int startX, int startY, int width, int height, int[] rgbArray, int offset, int scanSize) {
    if (width <= 0 || height <= 0)
        return;
    int bytesPerRow = 4 * width;
    CGBitmapContext context = CGBitmapContext.create(width, height, 8, bytesPerRow, CGColorSpace.createDeviceRGB(), // PremultipliedFirst for ARGB, same as BufferedImage in Java.
    new CGBitmapInfo(CGImageAlphaInfo.PremultipliedFirst.value()));
    // since we're fishing for authentic RGB data, never allow interpolation.
    context.setInterpolationQuality(CGInterpolationQuality.None);
    draw(context, 0, 0, width, height, startX, startY, width, height);
// TODO: extract data from context.getData()
// int x = 0;
// int y = height - 1; // inverted Y
// for (int px = 0; px < regionBytes.length; px += 4) {
//   int a = (int)regionBytes[px    ] & 0xFF;
//   int r = (int)regionBytes[px + 1] & 0xFF;
//   int g = (int)regionBytes[px + 2] & 0xFF;
//   int b = (int)regionBytes[px + 3] & 0xFF;
//   rgbArray[offset + y * scanSize + x] = a << 24 | r << 16 | g << 8 | b;
//   x++;
//   if (x == width) {
//     x = 0;
//     y--;
//   }
// }
}