code: Файлы цветного вывода

svg.cpp

@@ -0,0 +1,69 @@
+#include <iostream>
+#include <vector>
+#include <string>
+
+using namespace std;
+
+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;
+
+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 + 100 << "' ";
+    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> \n";
+}
+
+void
+svg_rect(double x, double y, double width, double height) {
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='#6600CC' fill='#aaffaa' /> \n";
+}
+
+
+void
+show_histogram_svg(const vector<size_t>& bins) {
+    double top = 0.0;
+    double move = 0.0;
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double k = 1.0;
+    size_t max_bin = bins[0];
+    for (size_t bin : bins) {
+        if (bin > max_bin) {
+            max_bin = bin;
+        }
+    }
+    if (max_bin * 10 > IMAGE_HEIGHT) {
+        k = double(IMAGE_HEIGHT - 10) / (max_bin * 10);
+    }
+    for (size_t bin : bins) {
+        svg_text(TEXT_LEFT + move, TEXT_BASELINE, to_string(bin));
+        move += BIN_HEIGHT;
+    }
+    top += 3 * BLOCK_WIDTH;
+    move = 13.0;
+    for (size_t bin : bins) {
+
+        const double bin_width = BLOCK_WIDTH * bin * k;
+        svg_rect(move, top, BIN_HEIGHT, bin_width);
+        move += BIN_HEIGHT;
+    }
+    svg_end();
+}

svg.h

@@ -0,0 +1,5 @@
+#pragma once
+#include <vector>
+
+void
+show_histogram_svg(const std::vector<size_t>& bins);