Component3D

// xxx.ets
@Entry
@Component
struct Index {
  scene: SceneOptions = { scene: $rawfile('gltf/DamageHemlt/glTF/DamagedHelmet.gltf'), modelType: ModelType.SURFACE};
  build() {
    Row() {
      Column() {
        Text('GLTF Example')
        Component3D( this.scene )
          .environment($rawfile('gltf/Environment/glTF/Environment.gltf'))
          .renderWidth('90%').renderHeight('90%')
      }.width('100%')
    }
    .height('100%')
  }
}

import animator, { AnimatorResult } from '@ohos.animator';
class EngineTime {
  totalTimeUs = 0;
  deltaTimeUs = 0;
};

let engineTime = new EngineTime();
let frameCount: number = 0;

function TickFrame() {
  if (frameCount == 10) {
    engineTime.totalTimeUs += 1.0;
    engineTime.deltaTimeUs += 1.0;
    frameCount = 0;
  } else {
    frameCount++;
  }
}

@Entry
@Component
struct Index {
  scene: SceneOptions = { scene: $rawfile('gltf/DamageHemlt/glTF/DamagedHelmet.gltf'), modelType: ModelType.SURFACE};
  backAnimator: AnimatorResult = animator.create({
    duration: 2000,
    easing: "ease",
    delay: 0,
    fill: "none",
    direction: "normal",
    iterations: -1,
    begin: 100,
    end: 200,
  });
  @State timeDelta: number[] = [1.0, 2.0];
  create() {
    this.backAnimator.onfinish = () => {
      console.log('backAnimator onfinish');
    }
    this.backAnimator.onframe = value => {
      TickFrame();
      this.timeDelta[0] = engineTime.deltaTimeUs;
    }

  }
  build() {
    Row() {
      Column() {
        Text('custom rendering')
        Component3D()
          .shader($rawfile('assets/app/shaders'))
          .shaderImageTexture($rawfile('assets/London.jpg'))
          .shaderInputBuffer(this.timeDelta)
          .customRender($rawfile('assets/app/rendernodegraphs/London.rng'), true)
          .renderWidth('90%').renderHeight('90%')
          .onAppear(() => {
            this.create();
            this.backAnimator.play();
          }).width('50%').height('50%')
      }.width('100%')
    }
    .height('100%')
  }
}