Use bytevectors instead structs when passing pointers to arrays

of numbers to the assimp C library.

* src/assimp.scm: Replace make-c-struct calls with bytevector->pointer

diff --git a/src/assimp.scm b/src/assimp.scm
index fcb9492fd1750e32e59ca704e232d7b1badbac16..3925805182696dd50b332eb9d20c9e4c6f4f217a 100644 (file)
--- a/src/assimp.scm
+++ b/src/assimp.scm
@@ -169,24 +169,24 @@
        (pkey (string->pointer (car color-type)))
        (type (cadr color-type))
        (index (caddr color-type))
-       (pout (make-c-struct (make-list max float) '(0)))
-       (pmax (make-c-struct (list unsigned-int) (list max))))
+       (pout (bytevector->pointer (list->f32vector (make-list max 0))))
+       (pmax (bytevector->pointer (list->u32vector (list max)))))
     (let ((res (aiGetMaterialFloatArray pmat pkey type index pout pmax)))
       (if (< res 0)
          res
-         (parse-c-struct pout (make-list max float))))))
+         (f32vector->list (pointer->bytevector pout max 0 'f32))))))
 
 (define-public (ai-get-material-integer-array mat color-type max)
   (let ((pmat (unwrap-ai-material mat))
        (pkey (string->pointer (car color-type)))
        (type (cadr color-type))
        (index (caddr color-type))
-       (pout (make-c-struct (make-list max int) '(0)))
-       (pmax (make-c-struct (list unsigned-int) (list max))))
+       (pout (bytevector->pointer (list->s32vector (make-list max 0))))
+       (pmax (bytevector->pointer (list->u32vector (list max)))))
     (let ((res (aiGetMaterialIntegerArray pmat pkey type index pout pmax)))
       (if (< res 0)
          res
-         (parse-c-struct pout (make-list max int))))))
+         (s32vector->list (pointer->bytevector pout max 0 's32))))))
 
 
 ;;; Faces