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51 строка
1.7 KiB
C++
51 строка
1.7 KiB
C++
#include <iostream>
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#include <vector>
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#include <cmath>
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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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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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}
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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>\n";
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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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cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' 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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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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svg_begin(400, 300);
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const size_t MAX_DOT = IMAGE_WIDTH - TEXT_WIDTH;
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double MAX_BIN = bins[0];
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for (size_t j = 1; j < bins.size(); j++){
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if (bins[j] > MAX_BIN) MAX_BIN = bins[j];
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}
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double top = 0;
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for (size_t bin : bins) {
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double bin_width = BLOCK_WIDTH * bin;
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if (bin == MAX_BIN){
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bin_width = MAX_DOT;
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}
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else bin_width = ceil(MAX_DOT * (bin / MAX_BIN));
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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, "black", "cyan");
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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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