the whole game

src/AppPlatform_glfw.cpp

@@ -0,0 +1,12 @@
+#include "AppPlatform_glfw.h"
+
+float AppPlatform_glfw::getPixelsPerMillimeter() {
+    GLFWmonitor* monitor = glfwGetPrimaryMonitor();
+
+    int width_mm, height_mm;
+    glfwGetMonitorPhysicalSize(monitor, &width_mm, &height_mm);
+
+    const GLFWvidmode* mode = glfwGetVideoMode(monitor);
+
+    return (float)mode->width / (float)width_mm;
+}