30 luadraw画了平躺着的棱柱,实虚开始部分
发布于 2026-09-23 19:37:16
我希望(0,0,0)出发的三条棱是虚线,而下图中的那条棱在斜二测下应为实现才对，可实际为虚线，这是为什么?
%!LW recipe=lualatex
\documentclass{standalone}
\usepackage[3d]{luadraw}
\usepackage[svgnames]{xcolor}
\begin{document}
\begin{luadraw}{name=prism}
local ld = luadraw
local pt3d = ld.pt3d
local M=pt3d.M
local g = ld.graph3d:new{
size={8,8},
bbox=false,
viewdir={"yz",0.5,45}
}
local base = { M(0,0,0), M(2,0,0), M(0,0,2) }--底面变量
local prism = ld.prism(base, M(0,3,0))
g:Dpoly(prism,{--画棱柱
mode=ld.mWireframe,
hiddenstyle="dashed",
edgestyle="solid"
})
g:Ddots3d(M(0,0,2),"blue")
g:Show()
\end{luadraw}
\end{document}
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