Using the QT application, it displays a three-dimensional triangular cone (tetrahedron), each mask has a different color, and can click or drag the mouse to rotate the triangle. Double click a surface to set the color of the surface.

Filename	Size	Update
tetrahedron
tetrahedron\main.cpp	445	2008-01-09
tetrahedron\tetrahedron.cpp	3379	2017-10-17
tetrahedron\tetrahedron.h	605	2008-01-09
tetrahedron\tetrahedron.pro	156	2008-01-09
tetrahedron\tetrahedron.pro.user	24019	2017-10-19

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