似乎你想改變三角形的頂點。
讓我們創建一個:
var geom = new THREE.Geometry();
geom.vertices.push(new THREE.Vector3(-10, 0, 0));
geom.vertices.push(new THREE.Vector3(0, 0, 0));
geom.vertices.push(new THREE.Vector3(10, 0, 0));
geom.faces.push(new THREE.Face3(0, 1, 2)); // CCW - it's important
var tri = new THREE.Mesh(geom, new THREE.MeshBasicMaterial({color: "yellow"}));
scene.add(tri);
然後,我們將設置的參數
var parameters = {y:0};
一個對象,並讓我們的三角形的頂點:
var a = geom.vertices[geom.faces[0].a]; // face's properties a, b, c
var b = geom.vertices[geom.faces[0].b]; // contain just indices of related vertices
var c = geom.vertices[geom.faces[0].c]; // thus we'll find them in array of vertices
剩下的也不是那麼困難,所以讓我們來創建我們的控制器:
var gui = new dat.GUI(); // create instance of dat.GUI();
gui.add(parameters, "y", 0, 20) // add a controller for 'y' property of 'parameters'
.name("High nodes") // set controller's name
.onChange( // set controller's listener
function(value) {
a.y = value; // we want to change y-value of 'a'
c.y = value; // we want to change y-value of 'c'
}
);
,一個更重要的事情,你必須設置
geom.verticesNeedUpdate = true;
在動畫/渲染循環。
jsfiddle示例。我希望這有幫助。
你的問題很混亂。你說'z'值,然後你爲'parameters'的'x'屬性添加一個控制器,然後在'onChange'監聽器中設置'THREE.Vector3()'的'y'值。 – prisoner849