5:svg format

svg.cpp

@@ -0,0 +1,57 @@
+#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_text(double left, double baseline, std::string text) {
+    std::cout << "<text x='" << left << "' y='" << baseline << "'>"<<text<<"</text>";
+}
+
+void svg_rect(double x, double y, double width, double height,std::string stroke = "black", std::string fill = "black") {
+    std::cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' stroke='"<<stroke<<"' fill='"<<fill<<"'/>";
+}
+
+void show_histogram_svg(const std::vector<size_t>& bins, size_t bin_count) {
+    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;
+    double mxbins = bins[0];
+    for (double x : bins)
+    {
+        if (x > mxbins)
+            mxbins = x;
+    }
+    double k;
+    if (mxbins > IMAGE_WIDTH-TEXT_WIDTH)
+        k = floor((IMAGE_WIDTH - TEXT_WIDTH) / mxbins);
+    else
+        k = 1;
+    svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
+    double top = 0;
+    for (size_t bin : bins) {
+        std::string color = "#" + std::to_string(bin*100);
+        const double bin_width = BLOCK_WIDTH * bin*k;
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT,color,color);
+        top += BIN_HEIGHT;
+    }
+    svg_end();
+}
+
+

svg.h

@@ -0,0 +1,4 @@
+#pragma once
+#include <vector>
+
+void show_histogram_svg(const std::vector<size_t>& bins, size_t bin_count);

vector.cpp

@@ -3,6 +3,7 @@
 #include<cmath>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 const size_t SCREEN_WIDTH = 80;
 const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
 using namespace std;
@@ -34,5 +35,5 @@ int main()
 {
 	Input in = input_data();
 	vector <size_t> bins = make_histogram(in.numbers, in.bin_count);
-	show_histogram_text(bins, in.bin_count);
+	show_histogram_svg(bins, in.bin_count);
 }

vector.vcxproj

@@ -128,12 +128,14 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="histogram.cpp" />
+    <ClCompile Include="svg.cpp" />
     <ClCompile Include="text.cpp" />
     <ClCompile Include="vector.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="histogram.h" />
     <ClInclude Include="histogram_internal.h" />
+    <ClInclude Include="svg.h" />
     <ClInclude Include="text.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />

vector.vcxproj.filters

@@ -24,6 +24,9 @@
     <ClCompile Include="text.cpp">
       <Filter>Исходные файлы</Filter>
     </ClCompile>
+    <ClCompile Include="svg.cpp">
+      <Filter>Исходные файлы</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="histogram.h">
@@ -35,5 +38,8 @@
     <ClInclude Include="histogram_internal.h">
       <Filter>Файлы заголовков</Filter>
     </ClInclude>
+    <ClInclude Include="svg.h">
+      <Filter>Файлы заголовков</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>