I need to know if the Perlin noise code I'm making that will use the hermite curve needs values between 0 to 1 or -1 to 1 in its permutation table or whatever is correct. I read the hermite curve uses values between 0 to 1 but I'm not sure. This means the permutation table is 128 or 256 values between 0 to 1 so they're all floats or doubles. Im asking about the range so the output stays in range because the formula will probably equal very large values if you use values that are larger than i...
