build: добавлен svg

svg.cpp

@@ -0,0 +1,62 @@
+#include <math.h>
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include <string>
+#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, string fill) {
+cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' stroke='"<<stroke<<"' fill='"<<fill<<"' />";
+
+}
+
+void
+show_histogram_svg(const vector<size_t>& bins, size_t BIN_HEIGHT, size_t bin_count) {
+
+    const auto IMAGE_WIDTH = 400;
+    const auto IMAGE_HEIGHT = 700;
+    const auto TEXT_LEFT = 20;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BLOCK_WIDTH = 10;
+
+    svg_begin(400, 700);
+    double top = 0;
+    if ( BIN_HEIGHT > IMAGE_HEIGHT)
+    {
+        BIN_HEIGHT = IMAGE_HEIGHT / bin_count;
+    }
+    for (size_t bin : bins) {
+    const double bin_width = BLOCK_WIDTH * bin;
+    svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+    svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "darkslategray", "#f716ac");
+    top += BIN_HEIGHT;
+    }
+    svg_end();
+}
+
+
+

svg.h

@@ -0,0 +1,8 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+#include <vector>
+void
+show_histogram_svg(const std::vector<size_t>& B, size_t BIN_HEIGHT, size_t bin_count);
+
+#endif // SVG_H_INCLUDED