From 8f383df0c295e1049bcf2211869e0b069fb3890e Mon Sep 17 00:00:00 2001
From: Nikita Kostovsky <luntik2012@gmail.com>
Date: Mon, 2 Dec 2024 19:42:40 +0100
Subject: draw lines

---
 CMakeLists.txt    |  2 ++
 Main.qml          |  2 ++
 QmlCustomPlot.cpp |  6 ++++--
 main.cpp          | 49 +++++++++++++++++++++++++++++++++++++++++++------
 4 files changed, 51 insertions(+), 8 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2923a7b..8d68a93 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,3 +54,5 @@ install(TARGETS appeurydice
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
 )
+
+add_compile_options(-Ofast -fno-unroll-loops -Wall)
diff --git a/Main.qml b/Main.qml
index 65fa5a0..0875d49 100644
--- a/Main.qml
+++ b/Main.qml
@@ -542,6 +542,8 @@ ApplicationWindow {
                 QmlCustomPlot {
                     id: qmlPlot
 
+                    objectName: "qmlCustomPlot"
+
                     Label {
                         anchors {
                             top: parent.top
diff --git a/QmlCustomPlot.cpp b/QmlCustomPlot.cpp
index ef30b3f..bba287e 100644
--- a/QmlCustomPlot.cpp
+++ b/QmlCustomPlot.cpp
@@ -127,7 +127,8 @@ void QmlCustomPlot::setLines(const QVector<QLineF> lines)
         //        const QColor color(Qt::green);
         // QRgb green = QRandomGenerator::generate();
         // QRgb blue = QRandomGenerator::generate();
-        const QColor color { QRgb { QRandomGenerator::global()->generate() } };
+        QColor color { QRgb { QRandomGenerator::global()->generate() } };
+        color.setAlpha(100);
         const QPen linePen(color, 4);
         QCPItemLine * l;
 
@@ -145,7 +146,8 @@ void QmlCustomPlot::setLines(const QVector<QLineF> lines)
             l = m_lineItems[i];
         }
 
-        const QPointF offset(0, 2);
+        // const QPointF offset(0, 2);
+        const QPointF offset(0, 0);
 
         const auto & lineToSet = lines.at(i);
         l->start->setCoords(lineToSet.p1() + offset);
diff --git a/main.cpp b/main.cpp
index 34719ef..eb44515 100644
--- a/main.cpp
+++ b/main.cpp
@@ -5,14 +5,10 @@
 #include <QQmlContext>
 #include <QtConcurrent/QtConcurrentRun>
 #include <QTimer>
-
+#include <iostream>
 #include "QmlCustomPlot.h"
 
-template <typename T>
-T& median3(const T& a, const T& b, const T& c) {
-    using namespace std;
-    return max(min(a,b), min(max(a,b),c));
-}
+// #include <execution>
 
 int main(int argc, char *argv[])
 {
@@ -132,6 +128,47 @@ int main(int argc, char *argv[])
 
         graph->setData(x_profile, y_profile);
 
+        auto jsonLines = json["lines"].toArray();
+
+        QList<QLineF> lines(jsonLines.count());
+
+        // FIXME: validate
+        // WARNING
+        // AHTUNG
+        // DANGER
+        std::transform(
+            // std::execution::par_unseq
+            jsonLines.cbegin(),
+            jsonLines.cend(),
+            lines.begin(),
+            [](const auto& jsonLine) -> QLineF {
+                const auto jsonPoints = jsonLine.toArray();
+                const auto jsonPoint0 = jsonPoints.at(0).toArray();
+                const auto jsonPoint1 = jsonPoints.at(1).toArray();
+                return {
+                    { jsonPoint0.at(0).toDouble(), jsonPoint0.at(1).toDouble() },
+                    { jsonPoint1.at(0).toDouble(), jsonPoint1.at(1).toDouble() }
+                };
+            }
+            );
+
+        // lines.append({{6,780},{38,787}});
+
+        auto qmlCustomPlot = engine.rootObjects().first()->findChild<QmlCustomPlot*>("qmlCustomPlot");
+
+        if (!qmlCustomPlot)
+        {
+            qWarning() << "no qmlCustomPlot";
+        }
+        else
+        {
+            qDebug() << "set lines. count is" << lines.count();
+            qmlCustomPlot->setLines(lines);
+        }
+
+        // 6 780
+        // 38 787
+
         engine.rootContext()->setContextProperty("max_diff", max_diff);
         engine.rootContext()->setContextProperty("max_diff_idx", int(max_diff_idx));
         engine.rootContext()->setContextProperty("min_diff", min_diff);
-- 
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