twn_draw.c: add warning for erroneous fov parameters

src/rendering/twn_draw.c

@@ -414,6 +414,9 @@ void render(void) {
 
 
 void draw_camera(Vec3 position, float fov, Vec3 up, Vec3 direction) {
+    if (fabsf(0.0f - fov) < 0.00001f || fov > (M_PIf / 2))
+        log_warn("Invalid fov given (%f)", (double)fov);
+
     Camera const camera = {
         .fov = fov,
         .pos = position,
@@ -428,6 +431,9 @@ void draw_camera(Vec3 position, float fov, Vec3 up, Vec3 direction) {
 
 /* TODO: https://stackoverflow.com/questions/62493770/how-to-add-roll-in-camera-class */
 DrawCameraFromPrincipalAxesResult draw_camera_from_principal_axes(Vec3 position, float fov, float roll, float pitch, float yaw) {
+    if (fabsf(0.0f - fov) < 0.00001f || fov > (M_PIf / 2))
+        log_warn("Invalid fov given (%f)", (double)fov);
+
     (void)roll;
 
     float yawc, yaws, pitchc, pitchs;