From 9ac5938c7d8f55f28ddff3f4077b6998992e90df Mon Sep 17 00:00:00 2001
From: Andrey <AnikeevAnA@mpei.ru>
Date: Sun, 16 Apr 2023 22:12:53 +0300
Subject: [PATCH] 4.SVG
---
svg.cpp | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
svg.h | 5 ++++
2 files changed, 76 insertions(+)
create mode 100644 svg.cpp
create mode 100644 svg.h
diff --git a/svg.cpp b/svg.cpp
new file mode 100644
index 0000000..ae837dc
--- /dev/null
+++ b/svg.cpp
@@ -0,0 +1,71 @@
+#include "svg.h"
+#include <iostream>
+#include <vector>
+
+using namespace std;
+
+void
+svg_begin(double width, double height) {
+ cout << "<?xml version='1.0' encoding='UTF-8'?>\n";
+ cout << "<svg ";
+ cout << "width='" << width << "' ";
+ cout << "height='" << height << "' ";
+ cout << "viewBox='0 0 " << width << " " << height << "' ";
+ cout << "xmlns='http://www.w3.org/2000/svg'>\n";
+}
+
+void
+svg_end() {
+ cout << "</svg>\n";
+}
+
+void
+svg_text(double left, double baseline, string text) {
+ cout << "<text x='" << left << "' y='" << baseline << "'>" << text << "</text>";
+}
+
+void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black"){
+ cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='#" << fill << "' />";
+}
+
+void
+show_histogram_svg(const vector<double>& bins) {
+
+ const auto IMAGE_WIDTH = 400;
+ const auto IMAGE_HEIGHT = 300;
+ const auto TEXT_LEFT = 20;
+ const auto TEXT_BASELINE = 20;
+ const auto TEXT_WIDTH = 50;
+ const auto BIN_HEIGHT = 30;
+ const auto BLOCK_WIDTH = 10;
+
+ svg_begin(400, 300);
+
+ double top = 0;
+ const size_t MAX_ASTERISK = IMAGE_WIDTH - TEXT_WIDTH;
+ double maxb = bins[0];
+
+ for (size_t j = 1; j < bins.size(); j++)
+ {
+ if (bins[j] > maxb) maxb = bins[j];
+ }
+
+ maxb = maxb * BLOCK_WIDTH;
+
+ for (size_t bin : bins) {
+
+ double bin_width;
+
+ if (maxb > MAX_ASTERISK)
+ {
+ bin_width = BLOCK_WIDTH * MAX_ASTERISK * (bin / maxb);
+ }
+ else bin_width = BLOCK_WIDTH * bin;
+
+ svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+ svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "red", "ffeeee");
+ top += BIN_HEIGHT;
+}
+
+ svg_end();
+}
diff --git a/svg.h b/svg.h
new file mode 100644
index 0000000..9c624fa
--- /dev/null
+++ b/svg.h
@@ -0,0 +1,5 @@
+#pragma once
+#include <vector>
+
+void
+show_histogram_svg(const std::vector<double>& bins);