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102 строки
2.2 KiB
C++
102 строки
2.2 KiB
C++
#include <math.h>
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#include <iostream>
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#include <conio.h>
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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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double sr(const vector<size_t>& bins) {
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if (bins.empty()) {
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return 0;
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}
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size_t totalHeight = 0;
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for (size_t bin : bins) {
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totalHeight += bin;
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}
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return static_cast<double>(totalHeight) / bins.size();
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}
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void
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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
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svg_end()
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{
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cout << "</svg>\n";
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}
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void
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svg_text(double left, double baseline, string text)
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{
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cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
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}
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void
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svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black")
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{
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cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' stroke='"<<stroke<<"' fill='"<<fill<<"' />";
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}
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void
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show_histogram_svg(const vector<size_t>& bins)
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{
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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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const auto BLACK = "black";
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const auto RED = "red";
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const auto GREEN = "green";
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const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
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size_t x = sr(bins);
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svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
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double top = 0;
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double max_count = bins[0];
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for (size_t i = 0; i < bins.size(); i++)
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{
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if (max_count<bins[i])
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{
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max_count=bins[i];
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}
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}
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for (size_t bin : bins)
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{
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double bin_width = (MAX_WIDTH)*(bin/max_count);
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
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if (bin_width<=MAX_WIDTH/max_count*x)
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{
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, GREEN);
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}
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else{
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, BLACK, RED);
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}
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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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