视频纹理三。几何

视频播放在右上角,绿色平面是视频所在的自定义几何体。

this.geometry = new THREE.Geometry();

this.geometry.vertices.push(
    new THREE.Vector3(900, 0, 840)
    new THREE.Vector3(-900, 0, 1200),
    new THREE.Vector3(900, 900, 840),
    new THREE.Vector3(-900, 900, 1200),
);

this.geometry.faces.push(
    new THREE.Face3(0, 1, 2),
    new THREE.Face3(1, 3, 2),
);

this.geometry.computeFaceNormals();

this.object = new THREE.Mesh(this.geometry, this._videoMaterial());

_videoMaterial() {

    let videoImage = document.createElement('canvas');
    videoImage.width = 480;
    videoImage.height = 204;

    this.videoImageContext = videoImage.getContext('2d');

    this.videoImageContext.fillStyle = '#211e79';
    this.videoImageContext.fillRect(0, 0, videoImage.width, videoImage.height);

    this.videoTexture = new THREE.Texture(videoImage);
    this.videoTexture.minFilter = THREE.LinearFilter;
    this.videoTexture.magFilter = THREE.LinearFilter;
    this.videoTexture.format = THREE.RGBFormat;

    return new THREE.MeshBasicMaterial({
        map: this.videoTexture,
        overdraw: true,
        side: THREE.DoubleSide
    });

}