All the code in these repos was created and explained by HashLips on the main YouTube channel.
To find out more please visit:
Create generative art by using the canvas api and node js. Before you use the generation engine, make sure you have node.js(v10.18.0) installed.
If you are cloning the project then run this first, otherwise you can download the source code on the release page and skip this step.
git clone https://github.com/HashLips/hashlips_art_engine.gitGo to the root of your folder and run this command if you have yarn installed.
yarn installAlternatively you can run this command if you have node installed.
npm installCreate your different layers as folders in the 'layers' directory, and add all the layer assets in these directories.
You can name the assets anything as long as it has a rarity weight attached in the file name like so: example element#70.png.
You can optionally change the delimiter # to anything you would like to use in the variable rarityDelimiter in the src/config.js file.
The 'weight' you assign to an individual item, after the '#', is NOT a percentage, as explained in the video tutorial linked elsewhere.
Let's say you would like to have 0.15 % chance of occurrence of example trait blueeyes and 99.85 % of occurrence of browneyes. If the program would have supported fractions, you would want to name the files:
blueeyes#0.15.png browneyes#99.85.png
Because the program adds all the weights together and calculates the odds by dividing the weight by the total sum we however can achieve this by naming the files:
blueeyes#15.png browneyes#9985.png
The program first adds all the weights (15 + 9985 = 10000) and calculates the odds of occurrence by dividing the individual weight by the total sum (15 / 10000). Because we multiplied the numerator and denominator by the same factor, the ratio remains the same, in other words, ( 0.15 / 99.85 ) = (15 / 9985)
TLDR; if you want to use weights smaller than 1, multiply all weights by 10^(number of decimals of the smallest weight)
Once you have all your layers, go into src/config.js and update the layerConfigurations objects layersOrder array to be your layer folders name in order of the back layer to the front layer.
Example: If you were creating a portrait design, you might have a background, then a head, a mouth, eyes, eyewear, and then headwear, so your layersOrder would look something like this:
const layerConfigurations = [
{
growEditionSizeTo: 100,
layersOrder: [
{ name: "Head" },
{ name: "Mouth" },
{ name: "Eyes" },
{ name: "Eyeswear" },
{ name: "Headwear" },
],
},
];The name of each layer object represents the name of the folder (in /layers/) that the images reside in.
Optionally you can now add multiple different layerConfigurations to your collection. Each configuration can be unique and have different layer orders, use the same layers or introduce new ones. This gives the artist flexibility when it comes to fine tuning their collections to their needs.
Example: If you were creating a portrait design, you might have a background, then a head, a mouth, eyes, eyewear, and then headwear and you want to create a new race or just simple re-order the layers or even introduce new layers, then you're layerConfigurations and layersOrder would look something like this:
const layerConfigurations = [
{
// Creates up to 50 artworks
growEditionSizeTo: 50,
startEditionFrom: 50,
layersOrder: [
{ name: "Background" },
{ name: "Head" },
{ name: "Mouth" },
{ name: "Eyes" },
{ name: "Eyeswear" },
{ name: "Headwear" },
],
},
{
// Creates an additional 100 artworks
growEditionSizeTo: 150,
layersOrder: [
{ name: "Background" },
{ name: "Head" },
{ name: "Eyes" },
{ name: "Mouth" },
{ name: "Eyeswear" },
{ name: "Headwear" },
{ name: "AlienHeadwear" },
],
},
];Update your format size, ie the outputted image size, and the
growEditionSizeTo on each layerConfigurations object, which is
the amount of variation outputted.
You can set resolution (ppi) in the format object (resolution: 96,).
If you want your edition numbers to be hex and/or padded, you can set
hexEdition: true, and padEdition: 64 respectively.
You can start the count from any number with startEditionFrom. This
won't work with sol, as it has to start from 0.
You can mix up the layerConfigurations order on how the images are
saved by setting the variable shuffleLayerConfigurations in the
config.js file to true. It is false by default and will save all
images in numerical order.
If you want to have logs to debug and see what is happening when you
generate images you can set the variable debugLogs in the config.js
file to true. It is false by default, so you will only see general logs.
If you want to play around with different blending modes, you can add
a blend: MODE.colorBurn field to the layersOrder options object.
If you need a layers to have a different opacity then you can add the
opacity: 0.7 field to the layersOrder options object as well.
If you want to have a layer ignored in the DNA uniqueness check, you
can set bypassDNA: true in the options object. This has the effect
of making sure the rest of the traits are unique while not considering
the Background Layers as traits, for example. The layers are included
in the final image.
To use a different metadata attribute name you can add the
displayName: "Awesome Eye Color" to the options object. All options
are optional and can be addes on the same layer if you want to.
If you want to control where a layer is placed within the image, you can
add a posX: 123, posY: 321, width: 456 and/or height: 654 to the
layersOrder options object (all values are in pixels).
Here is an example on how you can play around with both filter fields:
const layerConfigurations = [
{
growEditionSizeTo: 5,
startEditionFrom: 5,
layersOrder: [
{ name: "Background" , {
options: {
bypassDNA: false;
}
}},
{ name: "Eyeball" },
{
name: "Eye color",
options: {
blend: MODE.destinationIn,
opacity: 0.2,
displayName: "Awesome Eye Color",
},
},
{
name: "Iris",
options: {
posX: 96,
posY: 96,
width: 384,
height: 384,
},
},
{ name: "Shine" },
{ name: "Bottom lid", options: { blend: MODE.overlay, opacity: 0.7 } },
{ name: "Top lid" },
],
},
];Here is a list of the different blending modes that you can optionally use.
const MODE = {
sourceOver: "source-over",
sourceIn: "source-in",
sourceOut: "source-out",
sourceAtop: "source-out",
destinationOver: "destination-over",
destinationIn: "destination-in",
destinationOut: "destination-out",
destinationAtop: "destination-atop",
lighter: "lighter",
copy: "copy",
xor: "xor",
multiply: "multiply",
screen: "screen",
overlay: "overlay",
darken: "darken",
lighten: "lighten",
colorDodge: "color-dodge",
colorBurn: "color-burn",
hardLight: "hard-light",
softLight: "soft-light",
difference: "difference",
exclusion: "exclusion",
hue: "hue",
saturation: "saturation",
color: "color",
luminosity: "luminosity",
};When you are ready, run the following command and your outputted art will be in the build/images directory and the json in the build/json directory:
npm run buildor
node index.jsThe program will output all the images in the build/images directory along with the metadata files in the build/json directory. Each collection will have a _metadata.json file that consists of all the metadata in the collection inside the build/json directory. The build/json folder also will contain all the single json files that represent each image file. The single json file of a image will look something like this:
{
"dna": "d956cdf4e460508b5ff90c21974124f68d6edc34",
"name": "#1",
"description": "This is the description of your NFT project",
"image": "https://hashlips/nft/1.png",
"edition": 1,
"date": 1731990799975,
"attributes": [
{ "trait_type": "Background", "value": "Black" },
{ "trait_type": "Eyeball", "value": "Red" },
{ "trait_type": "Eye color", "value": "Yellow" },
{ "trait_type": "Iris", "value": "Small" },
{ "trait_type": "Shine", "value": "Shapes" },
{ "trait_type": "Bottom lid", "value": "Low" },
{ "trait_type": "Top lid", "value": "Middle" }
],
"compiler": "HashLips Art Engine"
}You can also add extra metadata to each metadata file by adding your extra items, (key: value) pairs to the extraMetadata object variable in the config.js file.
const extraMetadata = {
creator: "Daniel Eugene Botha",
};If you don't need extra metadata, simply leave the object empty. It is empty by default.
const extraMetadata = {};That's it, you're done.
You might possibly want to update the baseUri and description after you have ran your collection. To update the baseUri and description simply run:
npm run update_infoCreate a preview image collage of your collection, run:
npm run previewIn order to convert images into pixelated images you would need a list of images that you want to convert. So run the generator first.
Then simply run this command:
npm run pixelateAll your images will be outputted in the /build/pixel_images directory.
If you want to change the ratio of the pixelation then you can update the ratio property on the pixelFormat object in the src/config.js file. The lower the number on the left, the more pixelated the image will be.
const pixelFormat = {
ratio: 5 / 128,
};In order to export gifs based on the layers created, you just need to set the export on the gif object in the src/config.js file to true. You can also play around with the repeat, quality and the delay of the exported gif.
Setting the repeat: -1 will produce a one time render and repeat: 0 will loop forever.
const gif = {
export: true,
repeat: 0,
quality: 100,
delay: 500,
};To see the percentages of each attribute across your collection, run:
npm run rarityThe output will look something like this:
Trait type: Top lid
{
trait: 'High',
chance: '30',
occurrence: '3 in 20 editions (15.00 %)'
}
{
trait: 'Low',
chance: '20',
occurrence: '3 in 20 editions (15.00 %)'
}
{
trait: 'Middle',
chance: '50',
occurrence: '14 in 20 editions (70.00 %)'
}Hope you create some awesome artworks with this code 👄