[Tex/LaTex] TikZ: using filldraw with the let in syntax

tikz-pgf

How can I get \filldraw to fill the wedge when I use \filldraw let .. in syntax?

\documentclass[convert = false]{standalone}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\begin{tikzpicture}
  \filldraw[inner color = blue!50!, outer color = blue!10!black] let
    \p0 = (0, 0),
    \p1 = (1, 0),
    \p2 = (.707, .707),
    \n1 = {atan2(\x1 - \x0, \y1 - \y0)},
    \n2 = {atan2(\x2 - \x0, \y2 - \y0)},
    \n3 = {1cm}
  in (0, 0) +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2];
\end{tikzpicture}
\end{document}

enter image description here

What I would like to achieve is this:

enter image description here

where \filldraw was used in this manner:

\filldraw[inner color = blue!50!, outer color = blue!10!black] (2.5, 0) --
  +(.5, 0) arc (0:35.2644:.5cm);

Best Answer

You are missing -- to build a path (I changed the scale just for the example):

\documentclass[convert = false]{standalone}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\begin{tikzpicture}[scale=5]
  \filldraw[inner color = blue!50!, outer color = blue!10!black] let
    \p0 = (0, 0),
    \p1 = (1, 0),
    \p2 = (.707, .707),
    \n1 = {atan2(\x1 - \x0, \y1 - \y0)},
    \n2 = {atan2(\x2 - \x0, \y2 - \y0)},
    \n3 = {1cm}
  in (\p0) -- +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2];
\end{tikzpicture}
\end{document}

enter image description here

When filling (filldrawing), I always prefer to use -- cycle at the end of the path, as in:

\begin{tikzpicture}[scale=5]
  \filldraw[inner color = blue!50!, outer color = blue!10!black] let
    \p0 = (0, 0),
    \p1 = (1, 0),
    \p2 = (.707, .707),
    \n1 = {atan2(\x1 - \x0, \y1 - \y0)},
    \n2 = {atan2(\x2 - \x0, \y2 - \y0)},
    \n3 = {1cm}
  in (\p0) -- +(\n1:\n3) arc[radius = \n3, start angle = \n1, end angle = \n2] -- cycle;
\end{tikzpicture}
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