daily-crypto

Daily crypto market information data visualization art experiments

Fetch Prices

Fetch the current prices of the top 100 cryptocurrencies from Coingecko API: https://madjin.github.io/daily-crypto/data.txt

#!/bin/bash

# Set the API endpoint URL
API_URL="https://api.coingecko.com/api/v3/coins/markets"

# Set the parameters for the API request
PARAMS="?vs_currency=usd&order=market_cap_desc&per_page=100&page=1&sparkline=false"

# Make the API request and save the response to a file
curl -s -o prices.json "${API_URL}${PARAMS}"

# Parse the JSON response and extract the price for each cryptocurrency
for row in $(cat prices.json | jq -r '.[] | @base64'); do
    _jq() {
     echo ${row} | base64 --decode | jq -r ${1}
    }
    name=$(_jq '.name')
    price=$(_jq '.current_price')
    echo "${name}: ${price}"
done

Make it executable with the command chmod +x fetch_prices.sh. Then, you can add it as a daily cronjob by running the command crontab -e and adding the following line:

0 0 * * * /path/to/fetch_prices.sh

This will run the script at midnight every day and output the current prices in USD of the top 100 cryptocurrencies to the console.

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Create Cubes

Blender Python script that

• reads the values from column 2 (separated by :) in data.txt
• creates and resizes a cube in terms of volume based on that value
• centers the origin to each geometry, applies transforms
• exports a glTF of each cube as a separate file
• renames filename same as the node
• saves the files into new timestamped folder based on MM-DD-YYYY

import bpy
import math
import os
from datetime import datetime

# Set the path to the data file
data_file = "/path/to/data.txt"

# Define a function to calculate the size of a cube based on its volume
def get_cube_size(volume):
    size = math.pow(volume, 1/3)
    return size

# Get the current date
today = datetime.today().strftime("%m-%d-%Y")

# Create a new folder for the glTF files
output_folder = os.path.join("/path/to/output/folder", today)
if not os.path.exists(output_folder):
    os.makedirs(output_folder)

# Open the data file and read the values
with open(data_file, "r") as f:
    lines = f.readlines()

# Loop through the lines and create a cube for each value
for line in lines:
    # Parse the value from the line
    parts = line.strip().split(":")
    name = parts[0].strip()
    volume = float(parts[1].strip())
    
    # Calculate the size of the cube based on its volume
    size = get_cube_size(volume)
    
    # Create a new cube
    bpy.ops.mesh.primitive_cube_add(size=size, enter_editmode=False, location=(0, 0, 0))
    cube = bpy.context.active_object
    
    # Rename the cube based on the value
    cube.name = name
    
    # Center the origin to the geometry
    bpy.ops.object.origin_set(type="ORIGIN_GEOMETRY", center="BOUNDS")
    
    # Apply transforms
    bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
    
    # Export the cube as a glTF file
    filename = name.replace(" ", "_").replace(".", "").replace(",", "").replace("(", "").replace(")", "") + ".gltf"
    filepath = os.path.join(output_folder, filename)
    bpy.ops.export_scene.gltf(filepath=filepath, export_format="GLTF_SEPARATE", export_apply=True)
    
    # Delete the cube
    bpy.ops.object.delete()

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Ideas

Create a daily “blockchain”?

Separate each cube by distance, use gltf-transform to merge into 1 file?

Texture each cube the icon of the coin / create a huge texture atlas for top 100 coins

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