Svg до масштабирования

TWOPO.cpp

@@ -3,6 +3,7 @@
 #include "histogram.h"
 #include "text.h"
 #include "histogram_internal.h"
+#include "svg.h"
 
 
 using namespace std;
@@ -15,18 +16,18 @@ struct Input {
 //ââîä
 Input input_data() {
     size_t number_count;
-    cout << "Введите количество оценок: ";
+    cerr << "Введите количество оценок: ";
     cin >> number_count;
 
     Input in;
     in.numbers.resize(number_count);
 
-    cout << "Введите оценки:\n";
+    cerr << "Введите оценки:\n";
     for (size_t i = 0; i < number_count; i++) {
         cin >> in.numbers[i];
     }
 
-    cout << "Введите количество корзин: ";
+    cerr << "Введите количество корзин: ";
     cin >> in.bin_count;
 
     return in;
@@ -43,7 +44,8 @@ int main() {
 
     double bin_size = (max - min) / in.bin_count;
 
-    show_histogram_text(bins, bin_size);
+    //show_histogram_text(bins, bin_size); заменили на:
+    show_histogram_svg(bins);
 
     return 0;
 }

svg.cpp

@@ -0,0 +1,65 @@
+#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 = "black", string fill = "red")
+{
+    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;
+
+    //
+    svg_begin(400, 300);
+    double top = 0;
+    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);
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}
+//Ñàìîñòîÿòåëüíî. Ðåàëèçóéòå äëÿ ãèñòîãðàììû â SVG ìàñøòàáèðîâàíèå: ñàìûé äëèííûé ñòîëáåö äîëæåí çàíèìàòü (IMAGE_WIDTH - TEXT_WIDTH) òî÷åê.!!!!!!!!!!!!!!!!!!!!!!!!!!
+

svg.h

@@ -0,0 +1,12 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <string>
+
+void show_histogram_svg(const std::vector<size_t>& bins);
+
+
+#endif // SVG_H_INCLUDED