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82 строки
2.7 KiB
C++
82 строки
2.7 KiB
C++
#include "svg.h"
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#include <algorithm>
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#include <string>
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using namespace std;
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namespace svg {
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void begin(ostream& out, double width, double height) {
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out << "<?xml version='1.0' encoding='UTF-8'?>\n";
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out << "<svg width='" << width << "' height='" << height << "' "
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<< "viewBox='0 0 " << width << " " << height << "' "
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<< "xmlns='http://www.w3.org/2000/svg'>\n";
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}
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void end(ostream& out) {
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out << "</svg>\n";
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}
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void text(ostream& out, double left, double baseline, const string& text) {
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out << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>\n";
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}
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void rect(ostream& out, double x, double y, double width, double height,
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const string& stroke, const string& fill) {
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out << "<rect x='" << x << "' y='" << y << "' width='" << width
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<< "' height='" << height << "' stroke='" << stroke
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<< "' fill='" << fill << "' />\n";
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}
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void line(ostream& out, double x1, double y1, double x2, double y2,
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const string& stroke, int dash_length, int gap_length) {
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out << "<line x1='" << x1 << "' y1='" << y1 << "' "
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<< "x2='" << x2 << "' y2='" << y2 << "' "
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<< "stroke='" << stroke << "' stroke-width='2' "
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<< "stroke-dasharray='" << dash_length << " " << gap_length << "' />\n";
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}
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void show_histogram_svg(ofstream& out, const vector<size_t>& bins, int dash_length, int gap_length) {
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begin(out, IMAGE_WIDTH, IMAGE_HEIGHT);
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if (bins.empty()) {
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end(out);
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return;
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}
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size_t max_count = *max_element(bins.begin(), bins.end());
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if (max_count == 0) {
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end(out);
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return;
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}
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double max_width = IMAGE_WIDTH - TEXT_WIDTH - 100;
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double scale = max_width / max_count;
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double top = 0;
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for (size_t bin : bins) {
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double width = bin * scale;
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out << "<text x='" << TEXT_LEFT << "' y='" << top + TEXT_BASELINE + 15
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<< "' font-size='14' fill='black'>" << bin << "</text>\n";
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rect(out, TEXT_WIDTH, top, width, BIN_HEIGHT, "#333333", "#4CAF50");
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out << "<line x1='" << TEXT_WIDTH << "' y1='" << top + BIN_HEIGHT/2
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<< "' x2='" << TEXT_WIDTH + width << "' y2='" << top + BIN_HEIGHT/2
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<< "' stroke='white' stroke-width='3' "
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<< "stroke-dasharray='" << dash_length << "," << gap_length << "' />\n";
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top += BIN_HEIGHT + 10;
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}
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out << "<rect x='" << TEXT_WIDTH-5 << "' y='0' width='" << max_width+10
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<< "' height='" << top << "' fill='none' stroke='black' stroke-width='2'/>\n";
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end(out);
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}
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}
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