Visualization, of what line curses what line on the bottom (shadow). The lines in the upper part edge the area that is parallel to the floor. This area curses (mainly) the shadow on the floor. Corresponding file: <a href="//commons.wikimedia.org/wiki/File:Sierpinski-Pyramide_Spitze_8K_OpenCL_HQ_20200221_002.png" title="File:Sierpinski-Pyramide Spitze 8K OpenCL HQ 20200221 002.png">File:Sierpinski-Pyramide Spitze 8K OpenCL HQ 20200221 002.png</a>.
<a href="//commons.wikimedia.org/wiki/User:PantheraLeo1359531" title="User:PantheraLeo1359531">PantheraLeo1359531</a>
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<span class="int-own-work" lang="en">Own work</span>