Question

嘿我在我的场景中创建了一个类型的山峰，并希望让它的顶部摆动到特定的值。现在我试图访问我之前设置的顶点，并通过更新功能随时间再次指定它们。我如何访问它们并重新计算面孔？

geom1.vertices = [
    new THREE.Vector3( -1000, -300, 0 ),       
    new THREE.Vector3( -1000, 0, 0 ),
    new THREE.Vector3( -20, 120, 0 ),
    new THREE.Vector3( 60, 85, 0 ),
    new THREE.Vector3( 140, 100, 0 ),
    new THREE.Vector3( 1000, 0, 0 ),
    new THREE.Vector3( 1000, -300, 0 ),
    new THREE.Vector3( 0, -300 , 0 ),
];

geom1.faces = [
    new THREE.Face3( 7, 0, 1 ), 
    new THREE.Face3( 7, 1, 2 ),    
    new THREE.Face3( 7, 2, 3 ),  
    new THREE.Face3( 7, 3, 4 ),  
    new THREE.Face3( 7, 4, 5 ),  
    new THREE.Face3( 7, 5, 6 ), 
];    


geom1.computeFaceNormals();
geom1.dynamic = true;


var material1 = new THREE.MeshBasicMaterial( { 
    color: 0x7dae81, 
    side: THREE.DoubleSide,
} );


hill1 = new THREE.Mesh( geom1, material1);

在更新功能中我这样做

geom1.vertices[2].y += 0.1;
geom1.verticesNeedUpdate;

Answer 1

您需要设置

geometry.verticesNeedUpdate = true;

有关详细信息，请参阅verticesNeedUpdate in Three.js。

此外，Geometry没有dynamic属性。

three.js r.85

动态更新顶点和三个网格的面孔

1 个答案: