public void setRandom(Random random)
/* Sets all the scalars in 'this' to random values uniformly distributed
* over (0.0, 1.0) using the pseudo-random generator 'random'. */
{
// setZero();
for (int k = 0; k < size; ++k) f[k] = random.nextFloat();
}
public ScalarImage(int width, int height, Random random)
/* Constructs a new ScalarImage = < width, height, zero-buffer > */
{
this.width = width;
this.height = height;
size = width * height;
f = new float[size];
offset = new int[height];
for (int j = 0; j < height; ++j) offset[j] = width * j;
for (int k = 0; k < size; ++k) f[k] = random.nextFloat();
}