From 2a00e92d0fe7cc05c5d4182a9800f23aaf986dbf Mon Sep 17 00:00:00 2001
From: CDaut <git@cdaut.de>
Date: Thu, 15 Jun 2023 16:42:02 +0200
Subject: [PATCH] raycasting diagram

---
 .gitignore                                   |  3 ++
 presentation/diagrams/diagramm_occlusion.tex | 40 ++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 presentation/diagrams/diagramm_occlusion.tex

diff --git a/.gitignore b/.gitignore
index 475ecb1..4b728ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,6 @@ presentation.run.xml
 presentation.snm
 presentation.synctex.gz
 presentation.toc
+
+
+presentation/build/
\ No newline at end of file
diff --git a/presentation/diagrams/diagramm_occlusion.tex b/presentation/diagrams/diagramm_occlusion.tex
new file mode 100644
index 0000000..465a288
--- /dev/null
+++ b/presentation/diagrams/diagramm_occlusion.tex
@@ -0,0 +1,40 @@
+\documentclass[margin=5mm, tikz]{standalone}
+\usepackage{tikz, ifthen, calc}
+
+\begin{document}
+
+\begin{tikzpicture}
+  
+    \def\raynum{120}
+
+    \foreach \x in {0,...,\raynum} {
+        \ifthenelse{\x < 20 \OR \x>100}
+        {
+            \draw[color = red] (\x /\raynum * 6 ,0) -- (3,4);
+        }{
+            \draw[color = green] (\x /\raynum * 6 ,0) -- (3,4);
+ 
+        }
+    }
+
+    \fill[
+        white
+    ] (1.49,1) -- (4.51,1) -- (5.01,0) -- (0.99,0) -- cycle;
+
+
+    \draw [color=red] (0,0) -- node[below]{wall} (6,0) ; % wall
+    \draw [color=green](1.5,1) -- node[below]{blocker} (4.5,1); %blocker
+
+    %cam
+    \node[
+        circle,
+        fill = black,
+        minimum width = 1mm,
+        outer sep = 2mm
+    ] (camera) at (3,4)  {};
+    \node at (camera.north) {camera};
+
+
+\end{tikzpicture}
+
+\end{document}
\ No newline at end of file