working with show_histogram_svg

Histogram/histogram.cpp

@@ -40,3 +40,21 @@ std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bi
     return 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;
+    const auto TEXT_BASELINE = 20;
+    const auto TEXT_WIDTH = 50;
+    const auto BIN_HEIGHT = 30;
+    const auto BLOCK_WIDTH = 10;
+
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    for (size_t i = 0; i < bins.size(); ++i) {
+        const double bin_width = BLOCK_WIDTH * bins[i];
+        const double top = i * BIN_HEIGHT;
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bins[i]));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "#aaffaa"); // Ïðèìåð öâåòà
+    }
+    svg_end();
+}

Histogram/histogram.h

@@ -2,3 +2,4 @@
 #include <vector>
 size_t find_minmax(const std::vector<double>& numbers, double& min, double& max);
 std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t bin_count);
+void show_histogram_svg(const std::vector<size_t>& bins);

Histogram/main.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 #include <vector>
-
+#include "histogram.h"
+#include "text.h"
 struct Input{
     std::vector<double> numbers;
     size_t bin_count{};
@@ -24,86 +25,11 @@ Input input_data() {
     return in;
 };
 
-
 using namespace std;
 
-int main()
-{
-    const size_t SCREEN_WIDTH = 80;
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-
-
-    int number_count, bucket;
-
-    cerr << "Enter number count: "; cin >> number_count;
-
-    std::cerr << "Enter numbers: \n";
-    vector <double> numbers(number_count);
-    for (int i = 0; i < number_count; i++) cin >> numbers[i];
-
-    float min = numbers[0];
-    float max = numbers[0];
-
-    for (float x : numbers)
-    {
-        if (x < min) min = x;
-        else if (x > max) max = x;
-    }
-
-    if (max == min) {// ïðîâåðêà íà àíîìàëèþ
-        std::cout << " Unable to create a histogram." << std::endl;
-        return 1;
-    }
-
-    cerr << "Enter bucket: "; cin >> bucket;
-
-    float k = (max - min) / bucket;
-
-    if (numbers.empty()) {//áûëè ëè ââåäåíû ÷èñëà
-        std::cout << "Empty. unable to  create histogram." << std::endl;
-        return 1;
-    }
-
-    vector <int> stolb(bucket);
-    vector <int> proz(stolb);
-
-    for (int j = 0; j < bucket; j++) stolb[j] = 0;
-
-    for (int i = 0; i < number_count; i++)
-    {
-        bool flag = false;
-        for (int j = 0; (j < bucket && !flag); j++)
-        {
-            if (numbers[i] >= (min + k * j) && numbers[i] < (min + k * (1 + j)))
-            {
-                stolb[j]++;
-                flag = true;
-
-            }
-        }
-        if (!flag) stolb[bucket - 1]++;
-    }
-
-    int maxlen = 0;
-    for (int j = 0; j < bucket; j++)
-    {
-        if (maxlen < stolb[j]) maxlen = stolb[j];
-    }
-
-    for (int j = 0; j < bucket; j++)
-    {
-        if (stolb[j] < 100) cout << " ";
-        if (stolb[j] < 10) cout << "";
-        cout << stolb[j] << " |";
-        size_t height = stolb[j];
-        if (maxlen > MAX_ASTERISK)
-        {
-            if (maxlen != stolb[j]) height = MAX_ASTERISK * (static_cast <float>(stolb[j]) / maxlen);
-            else if (maxlen == stolb[j]) height = MAX_ASTERISK;
-        }
-        for (int i = 0; i < height; i++) cout << "*";
-        cout << "\n";
-    }
-
+int main() {
+    Input in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_svg(bins);
     return 0;
 }

Histogram/svg.cpp

@@ -0,0 +1,24 @@
+#include "svg.h"
+#include <iostream>
+#include <string>
+
+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_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 << "' />\n";
+}
+
+void svg_text(double left, double baseline, std::string text) {
+    std::cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>\n";
+}

Histogram/svg.h

@@ -0,0 +1,9 @@
+#pragma once
+#include <iostream>
+#include <string>
+#include <vector>
+
+void svg_begin(double width, double height);
+void svg_end();
+void svg_rect(double x, double y, double width, double height, std::string stroke = "black", std::string fill = "black");
+void svg_text(double left, double baseline, std::string text);

unittest.cbp

@@ -31,6 +31,9 @@
 		<Compiler>
 			<Add option="-Wall" />
 		</Compiler>
+		<Unit filename="Histogram/histogram.cpp" />
+		<Unit filename="Histogram/histogram_internal.h" />
+		<Unit filename="unittest.cpp" />
 		<Extensions>
 			<lib_finder disable_auto="1" />
 		</Extensions>

unittest.layout

@@ -2,4 +2,9 @@
 <CodeBlocks_layout_file>
 	<FileVersion major="1" minor="0" />
 	<ActiveTarget name="Debug" />
+	<File name="unittest.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="271" topLine="0" />
+		</Cursor>
+	</File>
 </CodeBlocks_layout_file>