default 5ef5958f30a0ba985961f1a9e1e8a672287ad5b67e8092bce724cf9c72147484.0 (staged)
camera.position.z = 40：这一步很关键！默认情况下，物体在坐标原点 (0,0,0)，相机也在原点。如果你不移开相机，你就跟物体“贴脸”了，什么也看不见。我们把相机往后拉 40 米，就能看清全貌了。
，这一点在快连下载安装中也有详细论述
Natural neighbour interpolation has a number of strengths over linear barycentric interpolation. Namely, it provides a smooth or continuous slope between samples3, and is always the same for a given point set, unlike the TIN where the quality of the triangulation can produce biases in the outcome, even in the best case.，更多细节参见搜狗输入法下载
if (i < j) {
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