Happy New Year!
Januar 1st, 2013 by Stefan Kottwitz
Happy New Year for all!
The animated GIF image shows fireworks displayed with TikZ written by Chris Hughes aka cmhughes on TeX.SE. Follow the link to see further fireworks effects.
The code is:
\documentclass[tikz]{standalone} \usepackage{tikz} \usetikzlibrary{decorations.pathmorphing,decorations.shapes} \begin{document} \foreach \radius in {1,2,...,20} { \begin{tikzpicture} % background rectangle \filldraw[black] (-3,-3) rectangle (5,3); % skyline \filldraw[black!80!blue](-3,-3)--(-3,-2)--(-2.5,-2)--(-2.5,-1)--(-2.25,-1)--(-2.25,-2)--(-2,-2) --(-2,-1)--(-1.75,-0.75)--(-1.5,-1) --(-1.5,-2)--(-1.1,-2)--(-1.1,0)--(-0.5,0)--(-0.5,-2) --(0,-2)--(0,-1.5)--(1,-1.5)--(1.25,-0.5)--(1.5,-1.5)--(1.5,-2) --(2,-2)--(2,0)--(2.5,0)--(2.5,-2) --(3,-2)--(3,-1)--(4,-1)--(4,-2)--(5,-2)--(5,-3)--cycle; % moon- what a hack! \filldraw[white] (4,2.5) arc (90:-90:20pt); \filldraw[black] (3.8,2.5) arc (90:-90:20pt); % fireworks \pgfmathparse{100-(\radius-1)*10}; % red firework \ifnum\radius<11 \draw[decorate,decoration={crosses},red!\pgfmathresult!black] (0,0) circle (\radius ex); \fi % orange firework \pgfmathparse{100-(\radius-6)*10}; \ifnum\radius>5 \ifnum\radius<16 \draw[decorate,decoration={crosses},orange!\pgfmathresult!black] (1,1) circle ( \radius ex-5ex); \fi \fi % yellow firework \pgfmathparse{100-(\radius-11)*10}; \ifnum\radius>10 \draw[decorate,decoration={crosses},yellow!\pgfmathresult!black] (2.5,1) circle (\radius ex-10ex); \fi \end{tikzpicture} } \end{document}
The resulting PDF file can be cropped and converted using
pdfcrop myfile.pdf
convert -delay 20 -loop 0 -density 300 myfile-crop.pdf fireworks.gif
Category: TeX.SX, pgf/TikZ | No Comments »

















