From 0d3fb9ea6ac959562f8cb24ae69469b06f40ac12 Mon Sep 17 00:00:00 2001
From: ShirokovIV <ShirokovIV@mpei.ru>
Date: Tue, 22 Apr 2025 21:34:21 +0300
Subject: [PATCH] svg

---
 svg.cpp | 76 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 svg.h   |  6 +++++
 2 files changed, 82 insertions(+)
 create mode 100644 svg.cpp
 create mode 100644 svg.h

diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..2c5a7c3
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,76 @@
+#include "svg.h"
+
+using namespace std;
+
+void
+svg_begin(double width, double height)
+{
+    cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    cout << "<svg ";
+    cout << "width='" << width << "' ";
+    cout << "height='" << height << "' ";
+    cout << "viewBox='0 0 " << width << " " << height << "' ";
+    cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end()
+{
+    cout << "</svg>\n";
+}
+
+void
+svg_text(double left, double baseline, string text)
+{
+    cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
+}
+
+void
+svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black")
+{
+    cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' stroke='"<<stroke<<"' fill='"<<fill<<"' />";
+
+}
+
+
+
+void
+show_histogram_svg(const vector<size_t>& bins)
+{
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 300;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto BLOCK_WIDTH = 10;
+    const auto BLACK = "black";
+    const auto RED = "red";
+    const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
+
+
+    svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
+
+    double top = 0;
+    double max_count = bins[0];
+    for (size_t i = 0; i < bins.size(); i++)
+    {
+        if (max_count<bins[i])
+        {
+            max_count=bins[i];
+        }
+    }
+
+    for (size_t bin : bins)
+    {
+        double bin_width = (MAX_WIDTH)*(bin/max_count);
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, RED);
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}
+
+
+
diff --git a/svg.h b/svg.h
new file mode 100644
index 0000000..bf136ac
--- /dev/null
+++ b/svg.h
@@ -0,0 +1,6 @@
+#include <iostream>
+#include <vector>
+#include <string>
+#include <math.h>
+using namespace std;
+void show_histogram_svg(const vector<size_t>& bins);