From cee44481e204af1e35877af6535f0231e8304989 Mon Sep 17 00:00:00 2001
From: artemzelenov <artemzeleznov40@gmail.com>
Date: Sat, 22 Apr 2023 12:54:30 +0300
Subject: [PATCH] =?UTF-8?q?code:=20=D0=B4=D0=BE=D0=B1=D0=B0=D0=B2=D0=B8?=
 =?UTF-8?q?=D0=BB=20svg=20=D1=84=D0=B0=D0=B9=D0=BB=20=D0=B8=20=D0=BD=D0=B0?=
 =?UTF-8?q?=D1=81=D1=82=D1=80=D0=BE=D0=B8=D0=BB=20=D0=BC=D0=B0=D1=88=D1=82?=
 =?UTF-8?q?=D0=B0=D0=B1=D0=B8=D1=80=D0=BE=D0=B2=D0=B0=D0=BD=D0=B8=D0=B5?=
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---
 project/main.cpp |  3 ++-
 project/svg.cpp  | 63 ++++++++++++++++++++++++++++++++++++++++++++++++
 project/svg.h    |  7 ++++++
 unittest.cpp     |  6 ++++-
 4 files changed, 77 insertions(+), 2 deletions(-)
 create mode 100644 project/svg.cpp
 create mode 100644 project/svg.h

diff --git a/project/main.cpp b/project/main.cpp
index 10a3cd3..d67f5e7 100644
--- a/project/main.cpp
+++ b/project/main.cpp
@@ -2,6 +2,7 @@
 #include <vector>
 #include "histogram.h"
 #include "text.h"
+#include "svg.h"
 using namespace std;
 struct Input {
     vector<double> numbers;
@@ -26,6 +27,6 @@ input_data(){
 int main()
 {   Input in = input_data();
     auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins, in.bin_count);
+    show_histogram_svg(bins);
     return 0;
 }
diff --git a/project/svg.cpp b/project/svg.cpp
new file mode 100644
index 0000000..9b26b9a
--- /dev/null
+++ b/project/svg.cpp
@@ -0,0 +1,63 @@
+#include <math.h>
+#include <iostream>
+#include <conio.h>
+#include <vector>
+#include <string>
+#include "svg.h"
+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, string fill) {
+cout << "<rect x='"<<x<<"' y='"<<y<<"' width='"<<width<<"' height='"<<height<<"' stroke='"<<stroke<<"' fill='"<<fill<<"' />";
+
+}
+
+
+void
+show_histogram_svg(const vector<size_t>& 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;
+    const auto MAX_WIDTH = IMAGE_WIDTH-TEXT_WIDTH;
+
+
+    svg_begin(IMAGE_WIDTH,IMAGE_HEIGHT);
+
+    double top = 0;
+double max_count = bins[0];
+    for (size_t i = 0; i < bins.size(); i++) {
+        if (bins[i] > max_count)
+            max_count = bins[i];
+    }
+    for (size_t bin : bins) {
+        const double bin_width = (IMAGE_WIDTH - TEXT_WIDTH)*(bin/max_count);
+        svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "red", "#aaffaa");
+        top += BIN_HEIGHT;
+    }
+
+    svg_end();
+}
diff --git a/project/svg.h b/project/svg.h
new file mode 100644
index 0000000..e4a6fd8
--- /dev/null
+++ b/project/svg.h
@@ -0,0 +1,7 @@
+#ifndef SVG_H_INCLUDED
+#define SVG_H_INCLUDED
+#include <vector>
+void
+show_histogram_svg(const std::vector<size_t>& bins);
+
+#endif // SVG_H_INCLUDED
diff --git a/unittest.cpp b/unittest.cpp
index 8f121d5..2cbf15c 100644
--- a/unittest.cpp
+++ b/unittest.cpp
@@ -6,7 +6,11 @@
 TEST_CASE("distinct positive numbers") {
     double min = 0;
     double max = 0;
+    std::vector<double>v{2,1};
+    CHECK(v.size() != 0);
+    CHECK(v.size() != 1);
     find_minmax({1, 2}, min, max);
-    CHECK(min == 2);
+    CHECK(min == 1);
     CHECK(max == 2);
+    CHECK(min != max);
 }