draw_basic.cpp uses std::numbers::pi instead of M_PI, undo changes for ezgl/graphics.hpp subtree

Author: w0lek

libs/EXTERNAL/libezgl/include/ezgl/graphics.hpp

@@ -39,9 +39,6 @@
 #include <functional>
 #include <string>
 #include <vector>
-#ifdef _WIN32
-#define _USE_MATH_DEFINES // ensure (non-standard) value of M_PI is brought in from math.h
-#endif
 #include <cfloat>
 #include <cmath>
 #include <algorithm>

vpr/src/draw/draw_basic.cpp

@@ -4,9 +4,7 @@
 #ifndef NO_GRAPHICS
 
 #include <cstdio>
-#ifdef _WIN32
-#define _USE_MATH_DEFINES // ensure (non-standard) value of M_PI is brought in from math.h
-#endif
+#include <numbers>
 #include <cmath>
 #include <algorithm>
 #include <sstream>
@@ -1229,7 +1227,7 @@ void draw_flyline_timing_edge(ezgl::point2d start, ezgl::point2d end, float incr
         std::string incr_delay_str = ss.str();
 
         // Get the angle of line, to rotate the text
-        float text_angle = (180 / M_PI)
+        float text_angle = (180 / std::numbers::pi)
                            * atan((end.y - start.y) / (end.x - start.x));
 
         // Get the screen coordinates for text drawing
@@ -1244,9 +1242,9 @@ void draw_flyline_timing_edge(ezgl::point2d start, ezgl::point2d end, float incr
 
         // Find an offset so it is sitting on top/below of the line
         float x_offset = screen_coords.center().x
-                         - 8 * sin(text_angle * (M_PI / 180));
+                         - 8 * sin(text_angle * (std::numbers::pi / 180));
         float y_offset = screen_coords.center().y
-                         - 8 * cos(text_angle * (M_PI / 180));
+                         - 8 * cos(text_angle * (std::numbers::pi / 180));
 
         ezgl::point2d offset_text_bbox(x_offset, y_offset);
         g->draw_text(offset_text_bbox, incr_delay_str.c_str(),