Surface Types

import {
  initEngine,
  createWorld,
  createWindow,
  createEntity,
  createCamera,
  createLight,
  createGeometry,
  createMaterial,
  createModel,
  createTexture,
  updateTransform,
  tick,
} from '@vulfram/engine';
import { initWasmTransport, transportWasm } from '@vulfram/transport-wasm';

const WINDOW_ID = 1;

function createSurfaceMaterial(label: string, color: [number, number, number, number], surfaceType: 'opaque' | 'masked' | 'transparent'): number {
  const texId = createTexture(WINDOW_ID, { source: { type: 'color', color }, srgb: true, label: label + ' Texture' });
  return createMaterial(WINDOW_ID, {
    kind: 'standard',
    options: {
      type: 'standard',
      content: {
        baseColor: [1, 1, 1, 1],
        surfaceType,
        baseTexId: texId,
        baseSampler: 'linear-clamp',
        flags: 0,
      },
    },
  });
}

async function boot() {
  await initWasmTransport();
  initEngine({ transport: transportWasm });
  createWorld(WINDOW_ID);
  createWindow(WINDOW_ID, {
    title: 'Surface Types',
    size: [1100, 700],
    position: [0, 0],
    canvasId: 'vulfram-canvas',
  });

  const camera = createEntity(WINDOW_ID);
  updateTransform(WINDOW_ID, camera, { position: [0, 2, 8], rotation: [0, 0, 0, 1], scale: [1, 1, 1] });
  createCamera(WINDOW_ID, camera, { kind: 'perspective', near: 0.1, far: 100.0 });

  const light = createEntity(WINDOW_ID);
  updateTransform(WINDOW_ID, light, { position: [2, 4, 6], rotation: [0, 0, 0, 1], scale: [1, 1, 1] });
  createLight(WINDOW_ID, light, { kind: 'point', intensity: 14, range: 30 });

  const planeGeom = createGeometry(WINDOW_ID, { type: 'primitive', shape: 'plane', options: { size: [3, 3, 1], subdivisions: 1 } });

  const opaqueMat = createSurfaceMaterial('Opaque', [0.9, 0.2, 0.2, 1], 'opaque');
  const maskedMat = createSurfaceMaterial('Masked', [0.2, 0.8, 0.3, 0.4], 'masked');
  const transparentMat = createSurfaceMaterial('Transparent', [0.2, 0.5, 0.9, 0.35], 'transparent');

  const opaque = createEntity(WINDOW_ID);
  updateTransform(WINDOW_ID, opaque, { position: [-3.5, 0, 0], rotation: [0, 0, 0, 1], scale: [1, 1, 1] });
  createModel(WINDOW_ID, opaque, { geometryId: planeGeom, materialId: opaqueMat });

  const masked = createEntity(WINDOW_ID);
  updateTransform(WINDOW_ID, masked, { position: [0, 0, 0], rotation: [0, 0, 0, 1], scale: [1, 1, 1] });
  createModel(WINDOW_ID, masked, { geometryId: planeGeom, materialId: maskedMat });

  const transparent = createEntity(WINDOW_ID);
  updateTransform(WINDOW_ID, transparent, { position: [3.5, 0, 0], rotation: [0, 0, 0, 1], scale: [1, 1, 1] });
  createModel(WINDOW_ID, transparent, { geometryId: planeGeom, materialId: transparentMat });

  let last = performance.now();
  function frame(now: number) {
    const delta = now - last;
    last = now;
    tick(now, delta);
    requestAnimationFrame(frame);
  }
  requestAnimationFrame(frame);
}

boot().catch(console.error);