Created new page SkyView. Additionally some graphics improvements.

lib/obp60task/Graphics.cpp

@@ -0,0 +1,25 @@
+/*
+Generic graphics functions
+
+*/
+#include <math.h>
+#include "Graphics.h"
+
+Point rotatePoint(const Point& origin, const Point& p, double angle) {
+    // rotate poind around origin by degrees
+    Point rotated;
+    double phi = angle * M_PI / 180.0;
+    double dx = p.x - origin.x;
+    double dy = p.y - origin.y;
+    rotated.x = origin.x + cos(phi) * dx - sin(phi) * dy;
+    rotated.y = origin.y + sin(phi) * dx + cos(phi) * dy;
+    return rotated;
+}
+
+std::vector<Point> rotatePoints(const Point& origin, const std::vector<Point>& pts, double angle) {
+    std::vector<Point> rotatedPoints;
+    for (const auto& p : pts) {
+         rotatedPoints.push_back(rotatePoint(origin, p, angle));
+    }
+     return rotatedPoints;
+}