NgtpPixelation

Preview

canvas.ts

import { ChangeDetectionStrategy, Component } from '@angular/core';
import { PostprocessingWrapper } from '@postprocessing/wrapper.ts';
import { NgtCanvas, provideNgtRenderer } from 'angular-three/dom';
import { SceneGraph } from './scene-graph';

@Component({
    selector: 'app-pixelation',
    template: `
        <ngt-canvas [camera]="{ position: [0, 0, 5], fov: 50 }">
            <app-postprocessing-wrapper *canvasContent [lights]="true">
                <app-scene-graph />
            </app-postprocessing-wrapper>
        </ngt-canvas>
    `,
    changeDetection: ChangeDetectionStrategy.OnPush,
    host: { class: 'pixelation-demo relative block h-full' },
    imports: [NgtCanvas, PostprocessingWrapper, SceneGraph],
})
export default class Pixelation {
    static clientProviders = [provideNgtRenderer()];
}

scene-graph.ts

import { ChangeDetectionStrategy, Component, CUSTOM_ELEMENTS_SCHEMA, ElementRef, viewChild } from '@angular/core';
import { beforeRender, NgtArgs } from 'angular-three';
import { NgtpColorDepth, NgtpEffectComposer, NgtpPixelation } from 'angular-three-postprocessing';
import * as THREE from 'three';

@Component({
    selector: 'app-scene-graph',
    template: `
        <ngt-mesh #mesh [position]="[-1.5, 0, 0]">
            <ngt-dodecahedron-geometry *args="[1]" />
            <ngt-mesh-standard-material color="limegreen" />
        </ngt-mesh>

        <ngt-mesh #mesh2 [position]="[1.5, 0, 0]">
            <ngt-icosahedron-geometry *args="[1]" />
            <ngt-mesh-standard-material color="coral" />
        </ngt-mesh>

        <ngtp-effect-composer>
            <ngtp-pixelation [options]="{ granularity: 8 }" />
            <ngtp-color-depth [options]="{ bits: 4 }" />
        </ngtp-effect-composer>
    `,
    schemas: [CUSTOM_ELEMENTS_SCHEMA],
    changeDetection: ChangeDetectionStrategy.OnPush,
    imports: [NgtArgs, NgtpEffectComposer, NgtpPixelation, NgtpColorDepth],
})
export class SceneGraph {
    private meshRef = viewChild.required<ElementRef<THREE.Mesh>>('mesh');
    private mesh2Ref = viewChild.required<ElementRef<THREE.Mesh>>('mesh2');

    constructor() {
        beforeRender(({ delta }) => {
            const mesh = this.meshRef().nativeElement;
            const mesh2 = this.mesh2Ref().nativeElement;
            mesh.rotation.x += delta * 0.4;
            mesh.rotation.y += delta * 0.2;
            mesh2.rotation.x -= delta * 0.3;
            mesh2.rotation.y += delta * 0.4;
        });
    }
}

The pixelation effect reduces the resolution of the rendered image, creating a retro, 8-bit style appearance.

Usage

import { NgtpEffectComposer, NgtpPixelation } from 'angular-three-postprocessing';

@Component({
  template: `
    <ngtp-effect-composer>
      <ngtp-pixelation [options]="{ granularity: 8 }" />
    </ngtp-effect-composer>
  `,
  imports: [NgtpEffectComposer, NgtpPixelation],
})
export class SceneGraph {}

Options

Property	Type	Default	Description
granularity	number	5	Pixel size (higher = more pixelated)

Example: Retro Game Style

@Component({
  template: `
    <ngt-mesh>
      <ngt-dodecahedron-geometry *args="[1]" />
      <ngt-mesh-standard-material color="limegreen" />
    </ngt-mesh>

    <ngtp-effect-composer>
      <ngtp-pixelation [options]="{ granularity: 10 }" />
      <!-- Add color depth reduction for full retro effect -->
      <ngtp-color-depth [options]="{ bits: 4 }" />
    </ngtp-effect-composer>
  `,
  imports: [NgtpEffectComposer, NgtpPixelation, NgtpColorDepth, NgtArgs],
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
})
export class SceneGraph {}

Tips

• Higher granularity values create larger pixels
• Combine with NgtpColorDepth for authentic retro game aesthetics
• Works well with NgtpScanline for CRT monitor simulation
• Consider reducing scene complexity when using heavy pixelation