+(define (ai-release-import scene)
+ (aiReleaseImport (unwrap-ai-scene scene)))
+
+(define* (ai-attach-predefined-log-stream type #:optional file)
+ (aiAttachLogStream
+ (aiGetPredefinedLogStream
+ type
+ (if file
+ (string->pointer file)
+ %null-pointer))))
+
+(define (ai-transform-vec-by-matrix4 vec mat)