how to eliminate the shadow of a tikzpicture in beamer

Question

I made a tikzpicture and I wanted to make shaded shapes but when I get to the page that contains the figure I find the shadows of all forms already present so there is a solution for them to appear with the figure since I also have an animation in the same figure knowing that it is a presentation in beamer.

Thank you

\begin{tikzpicture}
\filldraw[rounded corners=5pt,fill=blue!30!white, draw=blue!50!white,blur shadow={shadow blur steps=10},visible on=<4->] (8,1.833) rectangle (14.5,5);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,blur shadow={shadow blur steps=5},visible on=<4->] (9.25,4.75) rectangle  node[text width=2.5cm,align=center,visible on=<4->] {\textbf{Modélisation}}(13.25,5.25);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<5->] (8.333,3.5) rectangle  node[text width=2.5cm,align=center,visible on=<5->] {\small Poids \& poussée d’Archimède\normalsize }(11.0833,4.5);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<6->] (11.4166,3.5) rectangle  node[text width=2.5cm,align=center,visible on=<6->] {\small Dynamique\normalsize }(14.1666,4.5);

\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<7->] (8.333,2.166) rectangle  node[text width=2.5cm,align=center,visible on=<7->] {\small Propulsion\normalsize }(11.0833,3.166);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<8->] (11.4166,2.166) rectangle  node[text width=2.5cm,align=center,visible on=<8->] {\footnotesize Forces \& moments aérodynamiques\normalsize }(14.1666,3.166);


\draw [dashed,rounded corners=2.5mm,ultra thick, -latex,draw=blue!30!white,out=90,in=90,looseness=5,visible on=<9->] (8,3.4166)--(4.25,3.4166)--(4.25,2.75);



\filldraw[rounded corners=5pt,fill=blue!30!white, draw=blue!50!white,blur shadow={shadow blur steps=10},visible on=<10->] (1,-1.25) rectangle (7.5,2.5);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,blur shadow={shadow blur steps=5},visible on=<10->] (2.25,2.25) rectangle  node[text width=2.5cm,align=center,visible on=<10->] {\textbf{Commande}}(6.25,2.75);
\draw[draw=blue!50!white,line width=0.35mm,visible on=<10->] (4.25,2.25)--(4.25,-1.25);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,blur shadow={shadow blur steps=5},visible on=<11->] (1.625,1.75) rectangle  node[text width=2cm,align=center,visible on=<11->] {\textit{Linéaire}}(3.625,2.25);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,blur shadow={shadow blur steps=5},visible on=<12->] (4.875,1.75) rectangle  node[text width=2cm,align=center,visible on=<12->] {\textit{Non-linéaire}}(6.875,2.25);

\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<13->] (1.333,0.4166) rectangle  node[text width=2.5cm,align=center,visible on=<13->] {Linéarisation}(3.833,1.4166);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<14->] (1.333,-0.9166) rectangle  node[text width=2.5cm,align=center,visible on=<14->] {Contrôle}(3.833,0.0833);


\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<15->] (4.5833,0.4166) rectangle  node[text width=2.5cm,align=center,visible on=<15->] {Commandeg}(7.0833,1.4166);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,blur shadow={shadow blur steps=5},visible on=<16->] (4.5833,-0.9166) rectangle  node[text width=2.5cm,align=center,visible on=<16->] {Commandeg robuste}(7.0833,0.0833);
\end{tikzpicture}

I guess you need to add an example. Assuming that you use the beamer-overlay-styles library, you may have to adjust the shadow opacity to your needs. — , Jul 30 '18 at 21:56
You should not post the code into an answer, rather you should append it to your question. (I'm also wondering if this answer solves your question...) — , Jul 30 '18 at 22:51

score 1 · Accepted Answer · 2018-07-31T00:40:26.740

The issue is that beamer-overlay-styles makes things invisible by setting their opacity to 0. However, (blur) shadows have a non-zero opacity, which overrides the opacity from the invisible trick. So you need to block out the shadows as long as the nodes or other things are invisible. To this end, I define a style blur shadow on that takes two arguments, the overlay specification and the blur steps.

\documentclass[xcolor=dvipsnames,10pt]{beamer}
\usepackage{tikz}
\usetikzlibrary{shadows.blur}
\usetikzlibrary{overlay-beamer-styles}
\begin{document}
\tikzset{blur shadow on/.style args={<#1> with #2 steps}{alt={<#1>{blur
shadow={shadow blur steps=#2}}{}}}}
\begin{frame}[t]
\frametitle{Shadow opacity} 
\centerline{\begin{tikzpicture}[scale=0.92] 
\filldraw[rounded corners=5pt,fill=blue!30!white, draw=blue!50!white,
blur shadow on={<4-> with 10 steps},
visible on=<4->] (8,1.833) rectangle (14.5,5);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,
blur shadow on={<4-> with 5 steps},
visible on=<4->] (9.25,4.75) rectangle node[text
width=2.5cm,align=center,visible on=<4->,font=\bfseries] {Mod\'ulisation}(13.25,5.25);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<5-> with 5 steps},
visible on=<5->] (8.333,3.5) rectangle node[text
width=2.5cm,align=center,visible on=<5->,font=\small] {Poids \& pouss\'e
d'Archim\'ede}(11.0833,4.5); 
\filldraw[rounded
corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<6-> with 5 steps},
visible on=<6->] (11.4166,3.5) rectangle node[text
width=2.5cm,align=center,visible on=<6->,font=\small] {Dynamique}(14.1666,4.5);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<7-> with 5 steps},
visible on=<7->] (8.333,2.166) rectangle node[text
width=2.5cm,align=center,visible on=<7->,font=\small] {Propulsion}(11.0833,3.166); 
\filldraw[rounded corners=5pt,fill=blue!10!white,
draw=blue!40!white,
blur shadow on={<8-> with 5 steps},
visible on=<8->]
(11.4166,2.166) rectangle node[text width=2.5cm,align=center,visible
on=<8->,font=\footnotesize]
{Forces \& moments a\'erodynamiques}(14.1666,3.166);
\draw [dashed,rounded corners=2.5mm,ultra thick,
-latex,draw=blue!30!white,out=90,in=90,looseness=5,visible on=<9->]
(8,3.4166)--(4.25,3.4166)--(4.25,2.75);
\filldraw[rounded corners=5pt,fill=blue!30!white, draw=blue!50!white,
blur shadow on={<10-> with 10 steps},
visible on=<10->] (1,-1.25) rectangle (7.5,2.5);
\filldraw[rounded corners=5pt,fill=blue!15!white, draw=blue!30!white,
blur shadow on={<10-> with 5 steps},
visible on=<10->] (2.25,2.25) rectangle node[text
width=2.5cm,align=center,visible on=<10->,font=\bfseries] {Commande}(6.25,2.75);
\draw[draw=blue!50!white,line width=0.35mm,visible on=<10->]
(4.25,2.25)--(4.25,-1.25); 
\filldraw[rounded corners=5pt,fill=blue!15!white,
draw=blue!30!white,
blur shadow on={<11-> with 5 steps},
visible on=<11->]
(1.625,1.75) rectangle node[text width=2cm,align=center,visible
on=<11->,font=\itshape]
{Lin\'aire}(3.625,2.25); 
\filldraw[rounded
corners=5pt,fill=blue!15!white, draw=blue!30!white,
blur shadow on={<12-> with 5 steps},
visible on=<12->] (4.875,1.75) rectangle node[text
width=2cm,align=center,visible on=<12->,font=\itshape] {Non-lin\'aire}(6.875,2.25);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<13-> with 5 steps},
visible on=<13->] (1.333,0.4166) rectangle
node[text width=2.5cm,align=center,visible on=<13->] {Lin\'arisation}(3.833,1.4166); 
\filldraw[rounded corners=5pt,fill=blue!10!white,
draw=blue!40!white,
blur shadow on={<14-> with 5 steps},
visible on=<14->]
(1.333,-0.9166) rectangle node[text width=2.5cm,align=center,visible on=<14->]
{Contr\'ole}(3.833,0.0833);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<15-> with 5 steps},
visible on=<15->] (4.5833,0.4166) rectangle
node[text width=2.5cm,align=center,visible on=<15->] {Commandeg}(7.0833,1.4166);
\filldraw[rounded corners=5pt,fill=blue!10!white, draw=blue!40!white,
blur shadow on={<16-> with 5 steps},
visible on=<16->] (4.5833,-0.9166) rectangle
node[text width=2.5cm,align=center,visible on=<16->] {Commandeg
robuste}(7.0833,0.0833); 
\end{tikzpicture}}
\end{frame}
\end{document}

Note that I do not have your document preamble, which is (probably) the picture is too wide, and that you had some strange characters, which I could not copy, and replaced by ad hoc characters.

how to eliminate the shadow of a tikzpicture in beamer

1 Answers1

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