使用多边形轮廓精确定位和裁剪投影仪幻灯片上的图像

Question

我想要实现这样的幻灯片：

到目前为止我已经学会了如何使用多边形路径剪切图像 和如何创建无边距的框架。

然而我无法将两者结合起来以获得所需的输出。

我的 MWE 如下，图片可以检索这里和这里。

\documentclass{beamer}
\usepackage{tikz}

\begin{document}

\setbeamertemplate{navigation symbols}{}

\begin{frame}[plain,b]
    \begin{tikzpicture}[remember picture, overlay]
        \clip (0\paperwidth,0\paperheight)--(0.4\paperwidth,0\paperheight)--(0.6\paperwidth,1\paperheight)--(0\paperwidth,1\paperheight)--cycle; 
        \node[anchor=south west] at (0,0) {\includegraphics[width=\paperwidth]{photo-1463595373836-6e0b0a8ee322.jpeg}};
    \end{tikzpicture}
\end{frame}

\end{document}

谢谢你！

Answer 1

paperwidth我没有使用和，而是papweheight使用了current page锚点和calctikzlibrary 来定义剪切路径。

width我没有将其作为两幅图像的比例因子，而是使用了height它们，因为否则它们的高度不够，无法覆盖幻灯片。

最后inner sep=0pt修复以避免图形周围有白边。

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}

\setbeamertemplate{navigation symbols}{}

\begin{frame}[plain,b]
    \begin{tikzpicture}[remember picture, overlay]
        \begin{scope}
        \clip (current page.south west)|- 
              ($(current page.north west)!0.6!(current page.north east)$) --
              ($(current page.south west)!0.4!(current page.south east)$) --
              cycle;
        \node [anchor=south west, inner sep=0pt] at 
              (current page.south west)
              {\includegraphics[height=\paperheight]{photo-1463595373836-6e0b0a8ee322.jpg}};
        \end{scope}
        \begin{scope}
        \clip (current page.south east)|- 
              ($(current page.north west)!0.6!(current page.north east)$) --
              ($(current page.south west)!0.4!(current page.south east)$) --
              cycle;
        \node[anchor=south west, draw, inner sep=0pt] 
             at (current page.south west)
             {\includegraphics[height=\paperheight]{photo-1464013778555-8e723c2f01f8.jpg}};
        \end{scope}
    \end{tikzpicture}
\end{frame}

\end{document}

Answer 2

使用15.6 Generalized Filling: Using Arbitrary Pictures to Fill a Path，我设法做到：

\documentclass{beamer}
\usepackage{tikz}
\usepackage{mwe}

\begin{document}

\setbeamertemplate{navigation symbols}{}

\begin{frame}[plain,b,fragile]
  \begin{tikzpicture}[path image/.style={
      path picture={
        \node at (path picture bounding box.center) {
          \includegraphics[width=\paperwidth]{#1}
        };}}]
    \draw [path image=example-image-a] (0,0)--(0.4\paperwidth,0\paperheight)--(0.6\paperwidth,\paperheight)--(0\paperwidth,\paperheight)--cycle; 

    \draw [path image=example-image] (0.4\paperwidth,0\paperheight)--(\paperwidth,0\paperheight)--(\paperwidth,\paperheight)--(0.6\paperwidth,\paperheight)--cycle; 
  \end{tikzpicture}
\end{frame}

\end{document}