code: добавление масштабирования гистограммы

svg.cpp

@@ -3,7 +3,8 @@
 #include <vector>
 #include <string>
 
-void svg_begin(double width, double height) {
+void svg_begin(double width, double height)
+{
     std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
     std::cout << "<svg ";
     std::cout << "width='" << width << "' ";
@@ -12,15 +13,18 @@ void svg_begin(double width, double height) {
     std::cout << "xmlns='http://www.w3.org/2000/svg'>\n";
 }
 
-void svg_end() {
+void svg_end()
+{
     std::cout << "</svg>\n";
 }
 
-void svg_text(double left, double baseline, std::string text){
+void svg_text(double left, double baseline, std::string text)
+{
     std::cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
 }
 
-void show_histogram_svg(const std::vector<size_t>& bins){
+void show_histogram_svg(const std::vector<size_t>& bins)
+{
     const auto IMAGE_WIDTH = 400;
     const auto IMAGE_HEIGHT = 300;
     const auto TEXT_LEFT = 20;
@@ -28,19 +32,48 @@ void show_histogram_svg(const std::vector<size_t>& bins){
     const auto TEXT_WIDTH = 50;
     const auto BIN_HEIGHT = 30;
     const auto BLOCK_WIDTH = 10;
+    const auto MAX_AVAIL_WIDTH = IMAGE_WIDTH - TEXT_WIDTH - 20; // Äîñòóïíàÿ øèðèíà ñ îòñòóïîì
 
     svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+
+    // ìàêñèìàëüíîå çíà÷åíèå â bins
+    size_t max_bin = 0;
+    for (size_t bin : bins)
+    {
+        if (bin > max_bin) max_bin = bin;
+    }
+
+    if (max_bin * BLOCK_WIDTH > MAX_AVAIL_WIDTH)
+    {
+        // ìàñøòàáíûé êîýôôèöèåíò
+        double scale = 1.0;
+        scale = static_cast<double>(MAX_AVAIL_WIDTH) / (max_bin * BLOCK_WIDTH);
         double top = 0;
-    for (size_t bin : bins) {
+        for (size_t bin : bins)
+        {
+            const double bin_width = BLOCK_WIDTH * bin * scale;
+
+            svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
+            svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
+            top += BIN_HEIGHT;
+        }
+    }
+    else
+    {
+        double top = 0;
+        for (size_t bin : bins)
+        {
             const double bin_width = BLOCK_WIDTH * bin;
             svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
             svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT);
             top += BIN_HEIGHT;
         }
+    }
+
     svg_end();
 }
 
-void svg_rect(double x, double y, double width, double height, std::string stroke, std::string fill){
+void svg_rect(double x, double y, double width, double height, std::string stroke, std::string fill)
+{
     std::cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << "' />";
 }
-