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55 строки
1.5 KiB
C++
55 строки
1.5 KiB
C++
#include <iostream>
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#include <vector>
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#include <string>
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#include "svg.h"
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using namespace std;
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void svg_begin(double width, double height)
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{
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cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
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cout << "<svg ";
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cout << "width='" << width << "' ";
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cout << "height='" << height << "' ";
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cout << "viewBox='0 0 " << width << " " << height << "' ";
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cout << "xmlns='http://www.w3.org/2000/svg'>\n";
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}
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void svg_end()
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{cout << "</svg>\n";}
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void svg_text(double left, double baseline, string text)
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{cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";}
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void svg_rect(double x, double y, double width, double height, string stroke, string fill)
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{cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << "' />";}
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void show_histogram_svg(const std::vector<double> &bins){
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const auto IMAGE_WIDTH = 400;
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const auto IMAGE_HEIGHT = 300;
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const auto TEXT_LEFT = 20;
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const auto TEXT_BASELINE = 20;
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const auto TEXT_WIDTH = 50;
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const auto BIN_HEIGHT = 30;
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const auto BLOCK_WIDTH = 10;
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size_t max_count = 0;
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for (double bin: bins)
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{
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if (bin > max_count)
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{max_count = bin;}
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}
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svg_begin(400, 300);
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double top = 0;
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for (size_t bin : bins)
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{
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const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH) * bin / max_count;
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "red", "48d1cc");
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top += BIN_HEIGHT;
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}
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svg_end();
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}
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