(WIP)
This is the JS part for Spark2D. You can use this in any OneJS-enabled Unity projects and games.
npm i spark2d
spark2d requires you to expose the provided ComputeShaderDepot as csDepot in ScriptEngine's Globals list.
Documentation will be available when spark2d is a bit more mature. But here's a quick sample.
https://github.com/user-attachments/assets/851eb853-699b-4f65-9ae3-d7837f000c68
import { h, render } from "preact"
import { Slider } from "comps/slider"
import { Image } from "UnityEngine/UIElements"
import { useEffect, useRef } from "preact/hooks"
import { Color, Mathf, RenderTexture, Time } from "UnityEngine"
import { blur, dye, fbm, grad, maop, sdfield, ShapeType, trans } from "spark2d"
interface ShapeProps {
class?: string
shape: Uncapitalize<keyof typeof ShapeType>
args: number[]
rounded?: number
scale?: number
}
interface Params {
rotOffset: number
scaleOffset: number
scaleSpeed: number
rotSpeed: number
color: Color
auraColor: Color
auraColorZeroAlpha: Color
}
const tweened = { value: 0 }
const noise1 = fbm(512).scale(0.65).lacunarity(3.4).octaves(3).gain(0.9)
const noise2 = fbm(512).scale(1.25).lacunarity(3.4).octaves(2).gain(0.9)
setInterval(() => {
var time = Time.realtimeSinceStartupAsDouble * 1.2
noise1.offset(0, time).rot(0).dispatch()
maop(noise1.rt).multiply(0.15).add(0.5).pow(2.2).clamp(0, 1)
noise2.offset(2, 0.431 * time).rot(0).dispatch()
maop(noise2.rt).multiply(0.15).add(0.5).pow(2.2).clamp(0, 1)
maop(noise1.rt).multiply(noise2.rt)
})
var gradient = grad(512).add(Color.black, 0).add(Color.white, 1).dispatch()
trans(gradient).rot(-90)
maop(gradient).pow(1.5)
const Shape = ({ shape, args, class: className, rounded, scale }: ShapeProps) => {
const ref = useRef<Element>()
const params = useRef<Params>({
rotOffset: Math.random() * 360,
scaleOffset: Math.random() * 2 * Math.PI,
scaleSpeed: Math.random() + 2,
rotSpeed: (Math.random() < 0.5 ? -1 : 1) * (Math.random() * 10 + 20),
color: getRandomPaletteColor(),
auraColor: getRandomAuraColor(),
auraColorZeroAlpha: new Color(0, 0, 0, 0)
})
useEffect(() => {
const { r, g, b } = params.current.auraColor;
params.current.auraColorZeroAlpha = new Color(r, g, b, 0)
animate()
var id = setInterval(animate)
return () => clearInterval(id)
}, [])
function animate() {
const img = ref.current.ve as Image
var time = Time.realtimeSinceStartupAsDouble * 1.2
const { rotOffset, scaleOffset, scaleSpeed, rotSpeed, color, auraColor, auraColorZeroAlpha } = params.current
const field = (img.image ? sdfield(img.image as RenderTexture) : sdfield(512))
.rounded(rounded || 0)
.scale((scale || 1) + Math.sin(time * scaleSpeed + scaleOffset) * 0.1)
.rot(time * rotSpeed + rotOffset)
const rt = field[shape].apply(field, args).rt
maop(rt).clamp(0, 1).oneMinus()
const t = tweened.value
const r = Mathf.Lerp(1, 100, t)
const a = Mathf.Lerp(0.01, .2, t)
const b = Mathf.Lerp(0, .22, t)
const c = Mathf.Lerp(1, .7, t)
const d = Mathf.Lerp(1, .72, t)
const lastColor = Color.Lerp(color, Color.white, t)
blur(rt).radius(r).mask(gradient.rt).dispatch()
if (t <= 0.01) {
dye(rt).firstRunOnly((d) => d.add(new Color(0, 0, 0, 0), 0).add(color, 1)).dispatch()
} else {
maop(rt).multiply(noise1.rt).multiply(15).clamp(0, 1)
dye(rt).reset().add(auraColorZeroAlpha, 0).add(auraColor, a).add(color, b)
.add(color, c).add(lastColor, d).add(lastColor, 1.5).dispatch()
}
img.image = rt
}
return <image ref={ref} class={className} style={{ borderWidth: 1, borderColor: new Color(1, 1, 1, 0.05) }} />
}
const App = () => {
function onChange(value: number) {
tweened.value = value
}
return <div class="w-full h-full flex-col justify-center items-center p-2">
<div class="flex-row justify-center items-center flex-wrap p-2">
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="circle" args={[50]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="roundedBox" args={[38, 60, 10, 10, 20, 10]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="segment" args={[0, 40, 0, -40]} rounded={12} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="rhombus" args={[38, 60]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="trapezoid" args={[38, 60, 42]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="equilateralTriangle" args={[54]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="unevenCapsule" args={[40, 30, 40]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="pentagon" args={[50]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="hexagon" args={[50]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="octogon" args={[50]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="hexagram" args={[36]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="star5" args={[32, 2.5]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="pie" args={[-0.9, 0.3, 70]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="cutDisk" args={[60, -40]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="arc" args={[-0.9, -.8, 50, 14]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="vesica" args={[70, 20]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="moon" args={[40, 60, 55]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="egg" args={[45, 0.2]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="cross" args={[70, 30, 10]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="ellipse" args={[70, 50]} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="blobbyCross" args={[-50]} rounded={20} />
<Shape class="w-[256px] h-[256px] my-1 mx-4" shape="tunnel" args={[55, 55]} />
</div>
<div class="w-full p-6">
<Slider class="w-full" onChange={onChange} />
</div>
</div>
}
const colorPalette = [
new Color(1, 0.435, 0.380, 1), // Coral (#FF6F61)
new Color(0.420, 0.357, 0.584, 1), // Purple (#6B5B95)
new Color(0.533, 0.690, 0.294, 1), // Green (#88B04B)
new Color(0.969, 0.792, 0.788, 1), // Pink (#F7CAC9)
new Color(0.573, 0.659, 0.820, 1), // Blue (#92A8D1)
new Color(0.584, 0.322, 0.318, 1), // Mauve (#955251)
new Color(0.710, 0.396, 0.655, 1), // Orchid (#B565A7)
new Color(0, 0.608, 0.467, 1), // Teal (#009B77)
new Color(0.867, 0.255, 0.141, 1), // Red (#DD4124)
new Color(0.839, 0.314, 0.463, 1) // Raspberry (#D65076)
];
const auraColors = [
new Color(0.5, 0.3, 0, 1)
]
function getRandomPaletteColor(): Color {
const randomIndex = Math.floor(Math.random() * colorPalette.length);
return colorPalette[randomIndex];
}
function getRandomAuraColor(): Color {
const randomIndex = Math.floor(Math.random() * auraColors.length);
return auraColors[randomIndex];
}
render(<App />, document.body)
For completeness, here's the Puerts Config that will make the JS-C# interop as performant as possible and allocation-free. See the OneJS page for more info.
using System;
using System.Collections.Generic;
using OneJS.Utils;
using Puerts;
using Spark2D;
using Unity.Mathematics;
using UnityEngine;
using UnityEngine.UIElements;
namespace OneJSContainer {
[Configure]
public class OneJSContainerPuertsCfg {
[CodeOutputDirectory]
static string OutputDir => Application.dataPath + "/_gen/";
[Binding]
static IEnumerable<Type> Bindings {
get {
return new List<Type>() {
typeof(Rect),
typeof(Color),
typeof(Color32),
typeof(Vector2),
typeof(Vector3),
typeof(Vector4),
typeof(float2),
typeof(float3),
typeof(float4),
typeof(Mathf),
typeof(FloatConvUtil),
typeof(ComputeUtil),
typeof(Quaternion),
typeof(VisualElement),
typeof(Image),
typeof(MeshGenerationContext),
typeof(Painter2D),
typeof(OneJS.Dom.Document),
typeof(OneJS.Dom.Dom),
typeof(OneJS.Dom.DomStyle),
typeof(Array),
typeof(Time),
typeof(ComputeShader),
typeof(ComputeBuffer),
typeof(RenderTexture),
typeof(Graphics),
typeof(SystemInfo)
};
}
}
[BlittableCopy]
static IEnumerable<Type> Blittables {
get {
return new List<Type>() {
typeof(Rect),
typeof(Color),
typeof(Color32),
typeof(Vector2),
typeof(Vector3),
typeof(Vector4),
typeof(float2),
typeof(float3),
typeof(float4),
typeof(Quaternion),
};
}
}
}
}
FAQs
This is the JS part of Spark2D, a 2D visual effects library for Unity
The npm package spark2d receives a total of 0 weekly downloads. As such, spark2d popularity was classified as not popular.
We found that spark2d demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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