public float evaluate(float x, float y) {
for (int j = 0; j < results.length; j++) results[j].distance = Float.POSITIVE_INFINITY;
int ix = (int) x;
int iy = (int) y;
float fx = x - ix;
float fy = y - iy;
float d = checkCube(fx, fy, ix, iy, results);
if (d > fy) d = checkCube(fx, fy + 1, ix, iy - 1, results);
if (d > 1 - fy) d = checkCube(fx, fy - 1, ix, iy + 1, results);
if (d > fx) {
checkCube(fx + 1, fy, ix - 1, iy, results);
if (d > fy) d = checkCube(fx + 1, fy + 1, ix - 1, iy - 1, results);
if (d > 1 - fy) d = checkCube(fx + 1, fy - 1, ix - 1, iy + 1, results);
}
if (d > 1 - fx) {
d = checkCube(fx - 1, fy, ix + 1, iy, results);
if (d > fy) d = checkCube(fx - 1, fy + 1, ix + 1, iy - 1, results);
if (d > 1 - fy) d = checkCube(fx - 1, fy - 1, ix + 1, iy + 1, results);
}
float t = 0;
for (int i = 0; i < 3; i++) t += coefficients[i] * results[i].distance;
if (angleCoefficient != 0) {
float angle = (float) Math.atan2(y - results[0].y, x - results[0].x);
if (angle < 0) angle += 2 * (float) Math.PI;
angle /= 4 * (float) Math.PI;
t += angleCoefficient * angle;
}
if (gradientCoefficient != 0) {
float a = 1 / (results[0].dy + results[0].dx);
t += gradientCoefficient * a;
}
return t;
}
