メタン

メタン

by 孝昌 野中 -
Number of replies: 0

\tdplotsetmaincoords{-15}{0}\begin{tikzpicture}[scale=1,tdplot_main_coords,rotate=-37.5,declare function = {opc=0.9;vdw=1/5; lw=3;CH=1.087;a=CH/sqrt(3);Cvdw=1.70 cm; Hvdw=1.20 cm;}]\coordinate (O) at (0,0,0);\coordinate (A) at (-a,-a,-a);\coordinate (B) at (-a,a,-a);\coordinate (C) at (a,a,-a);\coordinate (D) at (a,-a,-a);\coordinate (E) at (-a,-a,a);\coordinate (F) at (-a,a,a);\coordinate (G) at (a,a,a);\coordinate (H) at (a,-a,a);\foreach \label in {B, D, E, G}\draw[line width = lw, Pink1] (O) -- (\label);\shade[ball color = black, opacity = opc] (O) circle (vdw*Cvdw);\foreach \label in {B, D, E, G}\shade[ball color = white, opacity = opc] (\label) circle (vdw*Hvdw);\end{tikzpicture}