
Research
Malicious fezbox npm Package Steals Browser Passwords from Cookies via Innovative QR Code Steganographic Technique
A malicious package uses a QR code as steganography in an innovative technique.
A library for audio visualization using the following rendering techniques:
We provide the following effects now:
Install from NPM.
npm install @antv/a8
Create a audio, set effect and start playing.
import { Audio, Sine } from '@antv/a8';
const audio = new Audio({
canvas: $canvas,
});
audio.data($audio).effect(new Sine()).play();
new Audio({
canvas: $canvas,
});
HTMLCanvasElement
Pass in an HTMLAudioElement
, create a AudioContext and Analyser later.
audio.data($audio);
Mount an effect.
import { Sine } from '@antv/a8';
audio.effect(new Sine());
audio.effect(new Sine()); // switch to another
Update style options of effect.
audio.style({ blur: 1 });
Start visualizing the audio.
audio.play();
Destroy rAF and GPU resources(if any).
audio.destroy();
We provide the following effect now.
When creating GPU particle effects, we should use a WASM to compile shader chunks. For more informations, see https://observablehq.com/@antv/compute-toys#cell-712
const shaderCompilerPath = new URL(
'/public/glsl_wgsl_compiler_bg.wasm',
import.meta.url,
).href;
const effect = new Stardust(shaderCompilerPath, {});
Let me briefly describe the implementation. The whole process inside compute shaders can be divided into four stages:
The particle structure is really simple, it consists of 2 properties: position
and velocity
. We will load/store particles from/to storage textures later.
struct Particle {
position: float4,
velocity: float4,
}
fn LoadParticle(pix: int2) -> Particle {
var p: Particle;
p.position = textureLoad(pass_in, pix, 0, 0);
p.velocity = textureLoad(pass_in, pix, 1, 0);
return p;
}
fn SaveParticle(pix: int2, p: Particle) {
textureStore(pass_out, pix, 0, p.position);
textureStore(pass_out, pix, 1, p.velocity);
}
At the first frame, we assign the initial position
& velocity
for each particle.
@compute @workgroup_size(16, 16)
fn SimulateParticles(@builtin(global_invocation_id) id: uint3) {
if (time.frame == 0u) {
let rng = rand4();
// Normalize from [0, 1] to [-1, 1].
p.position = float4(2.0 * rng.xyz - 1.0, 0.0);
p.velocity = float4(0.0, 0.0, 0.0, 0.0);
}
}
And in each of the next frames, position
will be updated with velocity
.
let dt = custom.Speed * custom.TimeStep;
p.velocity += (ForceField(p.position.xyz, t) - custom.VelocityDecay * p.velocity) * dt;
p.position += p.velocity * dt;
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
https://en.wikipedia.org/wiki/Kerr%E2%80%93Newman_metric
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
number
FAQs
A music visualizer
The npm package @antv/a8 receives a total of 1 weekly downloads. As such, @antv/a8 popularity was classified as not popular.
We found that @antv/a8 demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 64 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Research
A malicious package uses a QR code as steganography in an innovative technique.
Research
/Security News
Socket identified 80 fake candidates targeting engineering roles, including suspected North Korean operators, exposing the new reality of hiring as a security function.
Application Security
/Research
/Security News
Socket detected multiple compromised CrowdStrike npm packages, continuing the "Shai-Hulud" supply chain attack that has now impacted nearly 500 packages.