diff --git a/src/J3ML/Geometry/Frustum.cpp b/src/J3ML/Geometry/Frustum.cpp
index 23931a1..b0fd005 100644
--- a/src/J3ML/Geometry/Frustum.cpp
+++ b/src/J3ML/Geometry/Frustum.cpp
@@ -1 +1,20 @@
 #include <J3ML/Geometry/Frustum.h>
+
+namespace Geometry
+{
+    Frustum Frustum::CreateFrustumFromCamera(const CoordinateFrame &cam, float aspect, float fovY, float zNear, float zFar) {
+        Frustum frustum;
+        const float halfVSide = zFar * tanf(fovY * 0.5f);
+        const float halfHSide = halfVSide * aspect;
+
+        const Vector3 frontMultFar = cam.Front * zFar;
+
+        frustum.NearFace  = Plane{cam.Position + cam.Front * zNear, cam.Front};
+        frustum.FarFace   = Plane{cam.Position + frontMultFar, -cam.Front};
+        frustum.RightFace = Plane{cam.Position, Vector3::Cross(frontMultFar - cam.Right * halfHSide, cam.Up)};
+        frustum.LeftFace  = Plane{cam.Position, Vector3::Cross(cam.Up, frontMultFar+cam.Right*halfHSide)};
+        frustum.TopFace   = Plane{cam.Position, Vector3::Cross(cam.Right, frontMultFar - cam.Up * halfVSide)};
+        frustum.BottomFace   = Plane{cam.Position, Vector3::Cross(frontMultFar + cam.Up * halfVSide, cam.Right)};
+        return frustum;
+    }
+}
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