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65 строки
1.8 KiB
C++
65 строки
1.8 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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void
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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
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svg_end() {
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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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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 opacity , string stroke, string fill) {
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cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' fill-opacity= '"<< opacity<< "' stroke='"<<stroke<<"' fill='"<<fill<<"' />";
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}
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void
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show_histogram_svg(const vector<size_t>& B) {
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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 MAX_WIDTH = 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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double max_count = B[0];
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for (size_t i = 0; i < B.size(); i++) {
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if (B[i] > max_count)
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max_count = B[i];
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}
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for (size_t bin : B) {
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double opacity = (bin / max_count);
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const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH)*(bin/max_count);
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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, to_string(opacity), "blue", "#9BB0D2");
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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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