La flecha no toca el bloque

Question

Actualmente estoy dibujando el siguiente diagrama:

Por alguna razón una de las flechas no toca el bloque IFOC. ¿Cómo arreglo eso?

Mi código:

\documentclass[tikz,border=2pt]{standalone}

% Inclui subpacotes
\usetikzlibrary{shapes,arrows}
\usetikzlibrary{decorations.pathreplacing}
\usetikzlibrary{babel}
\usetikzlibrary{calc,arrows.meta,patterns,backgrounds}
\usetikzlibrary{positioning}
\usetikzlibrary{fit}

% Define subcomandos
\tikzstyle{line} = [draw, -latex']
\tikzstyle{block} = [draw, rectangle, rounded corners, minimum size=1cm, text centered]
\tikzstyle{circulo} = [draw, circle, minimum size=0.7cm, text centered]
\tikzstyle{triangulo} = [draw, thick, isosceles triangle, minimum height=1cm, isosceles triangle apex angle=60]
\tikzstyle{joint} = [draw, circle, fill, inner sep=0pt, minimum size=3pt]

\begin{document}

\tikzset{pics/transform/.style 2 args={code={%
\path (-\pgfkeysvalueof{/tikz/transform/width}/2,\pgfkeysvalueof{/tikz/transform/height}/2)
 node[below right] (tl) {#2}
 rectangle
(\pgfkeysvalueof{/tikz/transform/width}/2,-\pgfkeysvalueof{/tikz/transform/height}/2)
 node[above left] (br) {#1};
 \node[pic actions,inner sep=0pt,fit=(tl)(br),path picture={\path[pic actions]
 (path picture bounding box.north east)
 -- (path picture bounding box.south west);}] 
 (\pgfkeysvalueof{/tikz/transform/name}){};
}},transform/.cd,height/.initial=2cm,width/.initial=2cm,name/.initial=}

\tikzset{pics/inverter/.style 2 args={code={%
\path (-\pgfkeysvalueof{/tikz/inverter/width}/2,-\pgfkeysvalueof{/tikz/inverter/height}/2)
 node[above right,scale=2] (bl) {#2}
 rectangle
(\pgfkeysvalueof{/tikz/inverter/width}/2,\pgfkeysvalueof{/tikz/inverter/height}/2)
 node[below left,scale=2] (tr) {#1};
 \node[pic actions,inner sep=0pt,fit=(bl)(tr),path picture={\path[pic actions]
 (path picture bounding box.north west)
 -- (path picture bounding box.south east);}] 
 (\pgfkeysvalueof{/tikz/inverter/name}){};
 \node at (0,\pgfkeysvalueof{/tikz/inverter/height}/2) 
 [rectangle, above]{\pgfkeysvalueof{/tikz/inverter/title}};
}},inverter/.cd,height/.initial=2cm,width/.initial=2cm,name/.initial=,%
title/.initial=PWM Inverter}

\begin{tikzpicture}[auto, node distance=2cm, >=latex']
\path pic[draw,rounded corners,text centered,transform/name=trans1] {transform={$abc$}{$qd0$}}
(0,-3) pic[draw,rounded corners,text centered,transform/name=trans2] {transform={$abc$}{$qd0$}}
(-3,0) node[block,minimum size=2cm](ifoc){IFOC};
\node at (0,-1.5) [joint](j4){};

% arrows
\draw[->] (-2,0.35)-- node{$v_{qs}^{\lambda}$} (-1,0.35);
\draw[->] (-2,-0.35)-- node{$v_{ds}^{\lambda}$} (-1,-0.35);
\draw[->] (-1,-2.65)-|node[above,pos = 0.15873]{$i_{qs}^{\lambda}$}(-2.5,-1);
\draw[->] (-1,-3.35)-|node[above,pos = 0.11494]{$i_{ds}^{\lambda}$}(-3.0,-1);
\draw[->] (ifoc)--(-1.5,-1.5)-|node[above,pos = 0.35]{$\theta^{\lambda}$}(trans1);
\draw[->] (j4)--(trans2);
\end{tikzpicture}
\end{document}

Answer 1

Como se menciona en los comentarios, la brecha se debe a las esquinas redondeadas. Una forma de solucionar el problema es calcular la intersección de la ruta del límite del nodo con una continuación de la línea hacia el centro. Este método también funciona si desea terminar la línea con una flecha; de lo contrario, podría usar clip.

\documentclass[tikz,border=2pt]{standalone}
\usetikzlibrary{arrows}
\usetikzlibrary{fit}
\usetikzlibrary{intersections}
\usetikzlibrary{positioning}

% Define styles: use \tikzset !
\tikzset{block/.style={draw, rectangle, rounded corners, minimum size=1cm, text
centered},
joint/.style={draw, circle, fill, inner sep=0pt, minimum size=3pt}}

\begin{document}

\tikzset{pics/transform/.style 2 args={code={%
\path (-\pgfkeysvalueof{/tikz/transform/width}/2,\pgfkeysvalueof{/tikz/transform/height}/2)
 node[below right] (tl) {#2}
 rectangle
(\pgfkeysvalueof{/tikz/transform/width}/2,-\pgfkeysvalueof{/tikz/transform/height}/2)
 node[above left] (br) {#1};
 \node[pic actions,inner sep=0pt,fit=(tl)(br),path picture={\path[pic actions]
 (path picture bounding box.north east)
 -- (path picture bounding box.south west);}] 
 (\pgfkeysvalueof{/tikz/transform/name}){};
}},transform/.cd,height/.initial=2cm,width/.initial=2cm,name/.initial=}

\tikzset{pics/inverter/.style 2 args={code={%
\path (-\pgfkeysvalueof{/tikz/inverter/width}/2,-\pgfkeysvalueof{/tikz/inverter/height}/2)
 node[above right,scale=2] (bl) {#2}
 rectangle
(\pgfkeysvalueof{/tikz/inverter/width}/2,\pgfkeysvalueof{/tikz/inverter/height}/2)
 node[below left,scale=2] (tr) {#1};
 \node[pic actions,inner sep=0pt,fit=(bl)(tr),path picture={\path[pic actions]
 (path picture bounding box.north west)
 -- (path picture bounding box.south east);}] 
 (\pgfkeysvalueof{/tikz/inverter/name}){};
 \node at (0,\pgfkeysvalueof{/tikz/inverter/height}/2) 
 [rectangle, above]{\pgfkeysvalueof{/tikz/inverter/title}};
}},inverter/.cd,height/.initial=2cm,width/.initial=2cm,name/.initial=,%
title/.initial=PWM Inverter}

\begin{tikzpicture}[auto, node distance=2cm, >=latex']
\path pic[draw,rounded corners,text centered,transform/name=trans1] {transform={$abc$}{$qd0$}}
 (0,-3) pic[draw,rounded corners,text centered,transform/name=trans2]{transform={$abc$}{$qd0$}}
 (-3,0) node[block,minimum size=2cm,name path=block](ifoc){IFOC};
\node at (0,-1.5) [joint](j4){};

% arrows
\draw[->] (-2,0.35)-- node{$v_{qs}^{\lambda}$} (-1,0.35);
\draw[->] (-2,-0.35)-- node{$v_{ds}^{\lambda}$} (-1,-0.35);
\draw[->] (-1,-2.65)-|node[above,pos = 0.15873]{$i_{qs}^{\lambda}$}(-2.5,-1);
\draw[->] (-1,-3.35)-|node[above,pos = 0.11494]{$i_{ds}^{\lambda}$}(-3.0,-1);
\path[name path=line] (ifoc.center) --(-1.5,-1.5);
\draw[name intersections={of=block and line},->] (intersection-1)--(-1.5,-1.5)-|node[above,pos = 0.35]{$\theta^{\lambda}$}(trans1);
\draw[->] (j4)--(trans2);
\end{tikzpicture}
\end{document}