From 90157166640376123445f4b2b6e7c43c0ef062c6 Mon Sep 17 00:00:00 2001
From: BezhenarAN <BezhenarAN@mpei.ru>
Date: Wed, 24 Apr 2024 17:12:34 +0300
Subject: [PATCH] =?UTF-8?q?code:=20=D0=BF=D1=83=D0=BD=D0=BA=D1=82=206=20(s?=
 =?UTF-8?q?vg=20=D0=B2=D1=8B=D0=B2=D0=BE=D0=B4=20=D1=82=D0=B0=D0=B1=D0=BB?=
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---
 svg.cpp | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 svg.cpp

diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..dbee47e
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,67 @@
+#include <iostream>
+#include <vector>
+#include "svg.h"
+
+void
+svg_begin(double width, double height) {
+    std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+    std::cout << "<svg ";
+    std::cout << "width='" << width << "' ";
+    std::cout << "height='" << height << "' ";
+    std::cout << "viewBox='0 0 " << width << " " << height << "' ";
+    std::cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end() {
+    std::cout << "</svg>\n";
+}
+
+void
+svg_text(double left, double baseline, std::string text) {
+     std::cout << "<text x='" << left << "' y='"<< baseline << "' > " << text << " </text>";
+}
+
+void svg_rect(double x, double y, double width, double height){
+        std::cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << " ' stroke='black' fill='#33A220' ></rect>";
+}
+
+void
+show_histogram_svg(const std::vector<std::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 std::size_t MAX_ASTERISK = IMAGE_WIDTH - TEXT_WIDTH;
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double top = 0;
+
+    std::size_t maxbin=bins[0];
+    for (std::size_t i=0; i < bins.size(); i++){
+        if (maxbin < bins[i]){
+            maxbin=bins[i];
+        }
+    }
+
+    if (maxbin<=76){
+        for (std::size_t i=0; i < bins.size(); i++) {
+            double bin_width = BLOCK_WIDTH * bins[i];
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bins[i]));
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+            top += BIN_HEIGHT;
+        }
+        svg_end();
+    } else {
+        for (std::size_t i=0; i < bins.size(); i++) {
+            double bin_width= MAX_ASTERISK * (static_cast<double>(bins[i]) / maxbin);
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bins[i]));
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+            top += BIN_HEIGHT;
+        }
+        svg_end();
+    }
+}