@Override
public float get_unsafe(float x, float y) {
int xx = (int) x;
int yy = (int) y;
final int radius = kernel.getRadius();
final int width = kernel.getWidth();
int x0 = xx - radius;
int x1 = x0 + width;
int y0 = yy - radius;
int y1 = y0 + width;
float value = 0;
for (int i = y0; i < y1; i++) {
int indexSrc = image.startIndex + i * image.stride + x0;
float valueX = 0;
for (int j = x0; j < x1; j++) {
float w = kernel.compute(j - x);
valueX += w * (image.data[indexSrc++] & 0xFF);
}
float w = kernel.compute(i - y);
value += w * valueX;
}
if (value > max) return max;
else if (value < min) return min;
else return value;
}
@Override
public float get(float x, float y) {
int xx = (int) x;
int yy = (int) y;
final int radius = kernel.getRadius();
final int width = kernel.getWidth();
int x0 = xx - radius;
int x1 = x0 + width;
int y0 = yy - radius;
int y1 = y0 + width;
if (x0 < 0) x0 = 0;
if (x1 > image.width) x1 = image.width;
if (y0 < 0) y0 = 0;
if (y1 > image.height) y1 = image.height;
float value = 0;
float totalWeightY = 0;
for (int i = y0; i < y1; i++) {
int indexSrc = image.startIndex + i * image.stride + x0;
float totalWeightX = 0;
float valueX = 0;
for (int j = x0; j < x1; j++) {
float w = kernel.compute(j - x);
totalWeightX += w;
valueX += w * (image.data[indexSrc++] & 0xFF);
}
float w = kernel.compute(i - y);
totalWeightY += w;
value += w * valueX / totalWeightX;
}
value /= totalWeightY;
if (value > max) return max;
else if (value < min) return min;
else return value;
}
@Override
public int getUnsafeBorderY() {
return kernel.getRadius();
}
@Override
public boolean isInSafeBounds(float x, float y) {
float r = kernel.getRadius();
return (x - r >= 0 && y - r >= 0 && x + r < image.width && y + r < image.height);
}