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94 строки
2.4 KiB
C++
94 строки
2.4 KiB
C++
#include <iostream>
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#include "svg.h"
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#include <string>
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#include "histogram_internal.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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{
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cout << "</svg>\n";
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}
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void 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 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
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<< "' height='" << height << "' stroke='" << stroke << "' fill='" << fill << " '/>";
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}
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void 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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svg_begin(400, 300);
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double top = 0;
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size_t max_count = 0;
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for (auto 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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cerr << "BLOCK_WIDTH=";
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double BLOCK_WIDTH;
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cin >> BLOCK_WIDTH;
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bool prov=1;
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if((BLOCK_WIDTH<3) || (BLOCK_WIDTH>30)){
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BLOCK_WIDTH = -1;
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prov=0;
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while(prov==0){
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cout<< "Error range from 3 to 30 pi" << endl;
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cout<< "BLOCK_WIDTH=";
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cin >> BLOCK_WIDTH;
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if((BLOCK_WIDTH>3) && (BLOCK_WIDTH<30) ){
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prov=1;
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}
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}
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}
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if ((max_count * BLOCK_WIDTH) > (IMAGE_WIDTH - TEXT_WIDTH)){
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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) * (static_cast<double>(bin)/max_count);
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "green");
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top += BIN_HEIGHT;
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}
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}
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else{
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for (size_t bin : bins)
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{
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const double bin_width = BLOCK_WIDTH * bin;
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bin));
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "blue", "green");
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top += BIN_HEIGHT;
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}
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}
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svg_end();
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}
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