added example

examples/CMakeLists.txt

@@ -0,0 +1,4 @@
+project(examples)
+
+add_executable(ExampleProjectionMatrixBuilder ExampleProjMatBuilder.cpp)
+target_link_libraries(ExampleProjectionMatrixBuilder PRIVATE omath::omath)

examples/ExampleProjMatBuilder.cpp

@@ -0,0 +1,40 @@
+//
+// Created by Vlad on 3/19/2025.
+//
+#include <iostream>
+#include <omath/engines/opengl_engine/Camera.hpp>
+#include <omath/engines/opengl_engine/Formulas.hpp>
+#include <omath/projection/Camera.hpp>
+#include <print>
+
+
+int main()
+{
+    std::println("OMATH Projection Matrix Builder");
+
+    float fov = 0;
+    float near = 0;
+    float far = 0;
+    float viewPortWidth = 0;
+    float viewPortHeight = 0;
+
+    std::print("Enter camera fov: ");
+    std::cin >> fov;
+
+    std::print("Enter camera z near: ");
+    std::cin >> near;
+
+    std::print("Enter camera z far: ");
+    std::cin >> far;
+
+    std::print("Enter camera screen width: ");
+    std::cin >> viewPortWidth;
+
+    std::print("Enter camera screen height: ");
+    std::cin >> viewPortHeight;
+
+    const auto mat =
+            omath::opengl_engine::CalcPerspectiveProjectionMatrix(fov, viewPortWidth / viewPortHeight, near, far);
+
+    std::print("{}", mat.ToString());
+};