Setting the ground level in procedural terrain generation using a gradient function Hi, I am trying to create a set of functions (similar to Libnoise, Fastnoise and the Accidental Noise Library) to manipulate noise with the goal of producing terrain. As recommended by this article (https://ift.tt/q127xp) I am starting out with a 'gradient' function. The purpose of this function is to establish a ground level. I've read the articles many times, along with the previous versions and I can't get my head around this function at a conceptual level. I believe that the gradient function maps input coordinates (in my case x, y, z) to a range that I specify (0 to 1 in the linked article), on a per axis basis and assigns them a value based on where they fall within the range? Assuming y is my gradient axis, the gradient is from 0 to 1 and the value range is -1 to 1 then any y value above 1 or below 0 is clamped to either 1 or -1. For a y value between the 0 and 1 the result is lerp(-1, 1, y)? I did find this question but it didn't clear things up for me (https://ift.tt/2KDMNwt). Any clarification would be greatly appreciated. Thanks. https://ift.tt/eA8V8J

Hi, I am trying to create a set of functions (similar to Libnoise, Fastnoise and the Accidental Noise Library) to manipulate noise with the goal of producing terrain. As recommended by this article (https://ift.tt/q127xp) I am starting out with a 'gradient' function. The purpose of this function is to establish a ground level. I've read the articles many times, along with the previous versions and I can't get my head around this function at a conceptual level. I believe that the gradient function maps input coordinates (in my case x, y, z) to a range that I specify (0 to 1 in the linked article), on a per axis basis and assigns them a value based on where they fall within the range? Assuming y is my gradient axis, the gradient is from 0 to 1 and the value range is -1 to 1 then any y value above 1 or below 0 is clamped to either 1 or -1. For a y value between the 0 and 1 the result is lerp(-1, 1, y)? I did find this question but it didn't clear things up for me (https://ift.tt/2KDMNwt). Any clarification would be greatly appreciated. Thanks.

from GameDev.net https://ift.tt/2NeFTQr