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77 строки
2.5 KiB
C++
77 строки
2.5 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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void
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svg_begin(double width, double height) {
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std::cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
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std::cout << "<svg ";
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std::cout << "width='" << width << "' ";
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std::cout << "height='" << height << "' ";
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std::cout << "viewBox='0 0 " << width << " " << height << "' ";
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std::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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std::cout << "</svg>\n";
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}
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void
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svg_text(double left, double baseline, std::string text) {
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std::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, std::string colour){
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std::cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << " ' stroke='black' fill='"<< colour <<"' ></rect>";
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}
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void
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show_histogram_svg(const std::vector<std::size_t>& bins, const std::vector<std::string>& colours) {
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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 std::size_t MAX_ASTERISK = IMAGE_WIDTH - TEXT_WIDTH;
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svg_begin(IMAGE_WIDTH, IMAGE_HEIGHT);
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double top = 0;
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std::size_t maxbin=bins[0];
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for (std::size_t i=0; i < bins.size(); i++){
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if (maxbin < bins[i]){
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maxbin=bins[i];
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}
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}
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if (maxbin<=76){
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for (std::size_t i=0; i < bins.size(); i++) {
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double bin_width = BLOCK_WIDTH * bins[i];
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bins[i]));
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if (colours[i] != "A") {
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, colours[i]);
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} else {
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "GREEN");
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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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} else {
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for (std::size_t i=0; i < bins.size(); i++) {
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double bin_width= MAX_ASTERISK * (static_cast<double>(bins[i]) / maxbin);
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svg_text(TEXT_LEFT, top + TEXT_BASELINE, std::to_string(bins[i]));
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if (colours[i] != "A") {
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, colours[i]);
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} else {
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svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "GREEN");
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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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}
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