Note the thumbnail below is a degraded version of the actual image which is much sharper. A Necker cube is basically a wireframe drawing of a six-sided cube such that it has no perspective as to whether you're looking at it from the top or from the bottom. This is an example of two exactly identical necker cubes, the one on the left showing an intermediate object going in "down from the top" while the one on the right shows the object going in "up from the bottom" which shows how the image can change its perspective simply by changing which face (front or back) appears behind the intervening object. 多维数据集 多维数据集内克 光学幻觉 多维数据集内克 2
An example of a necker cube and an Impossible cube (one arm runs across the other but is still straight, which can't happen in 3D; it's an optical illusion). 多维数据集 多维数据集内克 光学幻觉 不可能的多维数据集和多维数据集内克
In mehreren Ebenen geodätische Sphären rekursiv aus Tetraeder in darstellender Geometrie, parallel Projektion konstruiert. Netz Abwicklungen sind auch in den Ebenen. Mit Inkscape sind die Ebenen schaltbar. 几何 平行投影 建设 从四面体,多个图层的测地线球体递归
优雅的艺术品以雪球为特色,上面装饰着一棵节日圣诞树。背景展示了宁静的冬日场景,还有积雪覆盖的松树。这张高品质的 JPG 图片可在共享资源 4.0 署名许可下获得。 snow-globe 圣诞节 雪 白雪皑皑的圣诞树地球仪
这种多功能背景采用无缝图案创作,展示了来自各种运动的球,包括篮球、棒球和足球。这种设计的颜色可以轻松定制,以满足您的需求。利用这种设计制作锦标赛邀请函、卡片、墙纸、体育海报、传单等等! 体育 球 模式 球类运动图案