mimetaur

[Ll]ibrary/
[Tt]emp/
[Oo]bj/
[Bb]uild/
[Bb]uilds/
Assets/AssetStoreTools*

# Visual Studio 2015 cache directory
/.vs/

mimetaur

import random

# script globals
normal_distribution_amount = 12
min_height = 1
max_height = 10

def get_random_height():
    random_height = hou.hmath.fit(random.random(), 0, 1, min_height, max_height)
    return random_height

mimetaur

(fit(rand($PT*0.77), 0, 1, 1, 10) + fit(rand($PT*0.97), 0, 1, 1, 10) + fit(rand($PT*0.778), 0, 1, 1, 10) + fit(rand($PT*0.17), 0, 1, 1, 10) + fit(rand($PT*0.37), 0, 1, 1, 10)) / 5

mimetaur

// using houdini's built in noise functions
// in the VEX expression language
// http://www.sidefx.com/docs/houdini/vex/index.html

// this is a Point Wrangle, meaning this code will be called
// for every point in the geometry
// each time it is called @P is equal 
// to a different point in the geo

// params are located on the attribute wrangle

mimetaur

int seed = set(ch("seed"));
float strength = ch("strength");

// trying out smoothing between two random values
float smoothedRand = smooth(random(seed + @pointnum),random(seed + @pointnum+1), 0.5);

// moving random from 0 to 1 to -0.5 to 0.5
float equalized = 0.5 -smoothedRand;

// y pos displaced based to rand * strength param

mimetaur

// paramaters come in as floats by default
// in order to cast them to other types
// need to wrap them in a "set()"

int width = set(ch("width"));
int height = set(ch("height"));
int num_points = set(ch("num_points"));
int seed = set(ch("seed"));

// seed needs to be persisted

mimetaur

u@startpos = chu("startpos");
u@endpos = chu("endpos");
f@increment = ch("increment");

for (float n = 0; n < 1; n += @increment)
{
    float x = lerp(@startpos.x, @endpos.x, n);
    float y = lerp(@startpos.y, @endpos.y, n);

    vector position = set(x , 0, y);

mimetaur

float amplitude = ch("amp");
float amp_scale = ch("amp_scale");

float noise_freq = ch("noise_freq");
float noise_offset = ch("noise_offset");
float time_speed = ch("time_speed");


for(float n = 0; n < 1; n += @increment)
{

mimetaur

float noise_freq = ch("noise_freq");
float threshold = ch("threshold");

vector seed = @P * noise_freq;

// let downstream nodes access this value
f@noiseval = noise(seed);

if (@noiseval < threshold) {
    removepoint(0, i@ptnum);

mimetaur

float noise_freq = ch("noise_freq");
float strength = ch("strength");
vector2 noise_offset = chu("noise_offset");
float time_speed = ch("time_speed");

float x_noise = (@P.x * noise_freq) + (@Time * time_speed) + noise_offset.x;
float z_noise = (@P.z * noise_freq) + (@Time * time_speed) + noise_offset.y;
vector noise_seed = set(x_noise, 0, z_noise);

// let downstream nodes access this value