Posted by dxli on
URL: https://forum.librecad.org/Entity-Equation-tp5710073p5710074.html

the lc_quadratic contains an equation in a form of quadratic, namely,

{x, y}.m_mQuad.{{x},{y}} + m_vLinear.{{x},{y}}+m_dConst = 0

Can you explain your ideas about equations in details?