rect: Add setters.

2 files changed, 37 insertions, 5 deletions

diff --git a/doc/api.texi b/doc/api.texi
index 1abaa87..16f57eb 100644
--- a/doc/api.texi
+++ b/doc/api.texi
@@ -835,22 +835,38 @@ Return a new rectangle whose upper-left corner is at (@var{x},
 @var{y}) and is @var{width} pixels wide and @var{height} pixels high.
 @end deffn
 
-@deffn {Procedure} rect-x @var{rect}
+@deffn {Procedure} rect-x rect
 Return the X coordinate of @var{rect}.
 @end deffn
 
-@deffn {Procedure} rect-y @var{rect}
+@deffn {Procedure} rect-y rect
 Return the Y coordinate of @var{rect}.
 @end deffn
 
-@deffn {Procedure} rect-width @var{rect}
+@deffn {Procedure} rect-width rect
 Return the width of @var{rect}.
 @end deffn
 
-@deffn {Procedure} rect-height @var{rect}
+@deffn {Procedure} rect-height rect
 Return the height of @var{rect}.
 @end deffn
 
+@deffn {Procedure} set-rect-x! rect x
+Set the x coordinate of @var{rect} to @var{x}.
+@end deffn
+
+@deffn {Procedure} set-rect-y! rect y
+Set the y coordinate of @var{rect} to @var{y}.
+@end deffn
+
+@deffn {Procedure} set-rect-width! rect w
+Set the width of @var{rect} to @var{w}.
+@end deffn
+
+@deffn {Procedure} set-rect-height! rect h
+Set the height of @var{rect} to @var{h}.
+@end deffn
+
 @node Surfaces
 @section Surfaces
 
diff --git a/sdl2/rect.scm b/sdl2/rect.scm
index 1fd3af9..8ec3cfa 100644
--- a/sdl2/rect.scm
+++ b/sdl2/rect.scm
@@ -33,7 +33,11 @@
             rect-x
             rect-y
             rect-width
-            rect-height))
+            rect-height
+            set-rect-x!
+            set-rect-y!
+            set-rect-width!
+            set-rect-height!))
 
 (define-record-type <rect>
   (%make-rect bv ptr)
@@ -56,3 +60,15 @@
 
 (define-inlinable (rect-height rect)
   (s32vector-ref (rect-bv rect) 3))
+
+(define-inlinable (set-rect-x! rect x)
+  (s32vector-set! (rect-bv rect) 0 x))
+
+(define-inlinable (set-rect-y! rect y)
+  (s32vector-set! (rect-bv rect) 1 y))
+
+(define-inlinable (set-rect-width! rect w)
+  (s32vector-set! (rect-bv rect) 2 w))
+
+(define-inlinable (set-rect-height! rect h)
+  (s32vector-set! (rect-bv rect) 3 h))