Unverified50% confidenceFactExact time
射线与球体的交点计算本质上是求解一元二次方程，判别式的正负决定射线是否与球体相交
1
Sources
50%
Confidence
Long-term
Relevance
7/7/2026
First Seen
Sources
在3D地球仪上实时协作作画：Paint the Earth开源实验解析
hackernewshackernews7/6/2026
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