我试图制作一个显示大量球形对象的三个 js 文档,最快的方法是使用 buffergeometry。来自这篇文章here我了解到我可以使用以下方法将普通几何体转换为缓冲几何体:
var sphere = new THREE.SphereGeometry( 4, 0.05, 0.025 );
var geometry = THREE.BufferGeometryUtils.fromGeometry( sphere );
但这似乎对我不起作用,创建对象的其余代码如下:
var positions = new Float32Array( x_GAMA.length * 3 );
for ( var i = 0; i < x_GAMA.length; i += 1 ) {
// positions
positions[ 3*i ] = x_GAMA[i]*10000;
positions[ 3*i + 1 ] = y_GAMA[i]*10000;
positions[ 3*i + 2 ] = z_GAMA[i]*10000;
}
geometry.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
var material = new THREE.PointCloudMaterial( {size:1,color:0x999999} );
geometry.computeBoundingSphere();
particleSystem = new THREE.PointCloud( geometry, material );
scene.add( particleSystem );
如果我使用 var geometry = new THREE.BufferGeometry();
效果很好,但这会创建我不想要的正方形。任何人都知道为什么这似乎不起作用?提前致谢。
最佳答案
在 Three.js r71 中,您可以像这样创建 Sphere Buffer Geometry:
var sphereGeometry = new THREE.SphereGeometry( 4, 3, 2 );
var bufferSphereGeometry = new THREE.BufferGeometry().fromGeometry( sphereGeometry );
在 r72 dev 中,您可以像这样直接进行操作:
// constructor: radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength
var sphereGeo = new THREE.SphereBufferGeometry( 4, 3, 2 ); //r72
关于javascript - 球体的三个js buffergeometry,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25491068/