Javascript 正方形网格的两个三角形未在三个js中渲染
作为三点js的初学者,我遇到了这个疑问。如果可以的话,请帮助我。 我试图画一个三角形和正方形并排,但问题发生在正方形网格中。只有第一次垂直推送发生,而不是第二次,它不会被渲染。我在这里做错什么了吗Javascript 正方形网格的两个三角形未在三个js中渲染,javascript,three.js,Javascript,Three.js,作为三点js的初学者,我遇到了这个疑问。如果可以的话,请帮助我。 我试图画一个三角形和正方形并排,但问题发生在正方形网格中。只有第一次垂直推送发生,而不是第二次,它不会被渲染。我在这里做错什么了吗 <!DOCTYPE html> <html> <head> <script src="three.js" type="text/javascript"></script> <script src=
<!DOCTYPE html>
<html>
<head>
<script src="three.js" type="text/javascript"></script>
<script src="Detector.js" type="text/javascript"></script>
<script src="Projector.js" type="text/javascript"></script>
<script src="CanvasRenderer.js" type="text/javascript"></script>
</head>
<body>
<div id="myCanvas">
<script>
var scene;
var camera;
var renderer;
initializeScene();
renderScene();
function initializeScene()
{
if(Detector.webgl)
{
renderer=new THREE.WebGLRenderer({antialias:true});
}
else
{
renderer=new THREE.CanvasRenderer();
}
renderer.setClearColor(0x000000, 1);
canvasWidth=window.innerWidth;
canvasHeight=window.innerHeight;
renderer.setSize(canvasWidth,canvasHeight);
document.getElementById("myCanvas").appendChild(renderer.domElement);
scene=new THREE.Scene();
camera = new THREE.PerspectiveCamera(45, canvasWidth / canvasHeight, 1, 100);
camera.position.set(0, 0, 10);
camera.lookAt(scene.position);
scene.add(camera);
var triangleGeometry=new THREE.Geometry();
triangleGeometry.vertices.push(new THREE.Vector3(0.0,1.0,0.0));
triangleGeometry.vertices.push(new THREE.Vector3(-1.0,-1.0,0.0));
triangleGeometry.vertices.push(new THREE.Vector3(1.0,-1.0,0.0));
triangleGeometry.faces.push(new THREE.Face3(0,1,2));
var triangleMaterial=new THREE.MeshBasicMaterial({
color:0xFFFFFF,
side:THREE.DoubleSide
});
var triangleMesh=new THREE.Mesh(triangleGeometry,triangleMaterial);
triangleMesh.position.set(-1.5,0.0,4.0);
scene.add(triangleMesh);
var squareGeometry=new THREE.Geometry();
squareGeometry.vertices.push(new THREE.Vector3(-1.0,1.0,0.0));
squareGeometry.vertices.push(new THREE.Vector3(1.0,1.0,0.0));
squareGeometry.vertices.push(new THREE.Vector3(1.0,-1.0,0.0));
squareGeometry.vertices.push(new THREE.Vector3(-1.0,1.0,0.0));
squareGeometry.faces.push(new THREE.Face3(0,1,2));
squareGeometry.faces.push(new THREE.Face3(0,2,3)); //Not working
var squareMaterial=new THREE.MeshBasicMaterial({
color:0xFFFFFF,
side:THREE.DoubleSide
});
var squareMesh=new THREE.Mesh(squareGeometry,squareMaterial);
squareMesh.position.set(1.5,0.0,4.0);
scene.add(squareMesh);
}
function renderScene()
{
renderer.render(scene,camera);
}
</script>
</div>
</body>
</html>
var场景;
var摄像机;
var渲染器;
初始化();
renderScene();
函数initializeScene()
{
if(Detector.webgl)
{
renderer=new THREE.WebGLRenderer({antialas:true});
}
其他的
{
renderer=new THREE.CanvasRenderer();
}
setClearColor(0x000000,1);
画布宽度=window.innerWidth;
画布高度=window.innerHeight;
渲染器.setSize(画布宽度、画布高度);
document.getElementById(“myCanvas”).appendChild(renderer.doElement);
场景=新的三个。场景();
摄像机=新的三个透视摄像机(45,画布宽度/画布高度,1100);
摄像机位置设置(0,0,10);
摄像机。注视(场景。位置);
场景。添加(摄影机);
var triangleGeometry=新的三点几何();
三角几何.顶点.推(新的三矢量3(0.0,1.0,0.0));
三角几何.顶点.推(新的三矢量-1.0,-1.0,0.0));
三角几何.顶点.推(新的三矢量3(1.0,-1.0,0.0));
三角几何.面.推(新的三面3(0,1,2));
var triangleMaterial=新的三网格基本材质({
颜色:0xFFFFFF,
侧面:三个。双面
});
var triangleMesh=新的三点网格(三角几何、三角材料);
三角网格位置集(-1.5,0.0,4.0);
场景。添加(三角形网格);
var squareGeometry=新的三个.Geometry();
squareGeometry.Vertexs.push(新的三个向量(-1.0,1.0,0.0));
squareGeometry.Vertexs.push(新的三个向量3(1.0,1.0,0.0));
squareGeometry.Vertexs.push(新的三向量3(1.0,-1.0,0.0));
squareGeometry.Vertexs.push(新的三个向量(-1.0,1.0,0.0));
方形几何.面.推(新的三面3(0,1,2));
squareGeometry.faces.push(新的三个面3(0,2,3));//不工作
var squareMaterial=新的三网格基本材质({
颜色:0xFFFFFF,
侧面:三个。双面
});
var squareMesh=新的三网格(squareGeometry,squareMaterial);
方形网格位置设置(1.5,0.0,4.0);
场景。添加(方形网格);
}
函数renderScene()
{
渲染器。渲染(场景、摄影机);
}
您的问题是在同一点上画了两次:
squareGeometry.vertices.push(new THREE.Vector3(-1.0,1.0,0.0)); // <--- same
squareGeometry.vertices.push(new THREE.Vector3(1.0,1.0,0.0)); // | as
squareGeometry.vertices.push(new THREE.Vector3(1.0,-1.0,0.0)); // | this
squareGeometry.vertices.push(new THREE.Vector3(-1.0,1.0,0.0)); // <--- point
你的代码运行良好。我在结果中看到了两个方面。很抱歉,请检查,但它仍然只显示一张脸,至少局部显示。小提琴在控制台上也显示了两个面。
squareGeometry.vertices.push(new THREE.Vector3(-1.0,-1.0,0.0));