diff options
| author | Pierre-Antoine Rouby <contact@parouby.fr> | 2019-05-20 18:03:18 +0200 |
|---|---|---|
| committer | David Thompson <dthompson@vistahigherlearning.com> | 2019-05-21 08:05:35 -0400 |
| commit | 13ed39d65ed2637973c64303e8b90c3eac1b550e (patch) | |
| tree | 8016c92c9d95402358a5bdd4558b3e432ca76257 | |
| parent | 4b2c190732b9022e7546c5d2724a82905b6555ee (diff) | |
render: Add SDL_RenderCopyEx binding.
* sdl2/bindings.scm (sdl-point): New variable.
(sdl-render-copy-ex): New procedure.
* sdl2/render.scm (render-copy): Add optional arguments, angle and
center.
* doc/api.texi (Rendering): Document it.
| -rw-r--r-- | doc/api.texi | 6 | ||||
| -rw-r--r-- | sdl2/bindings.scm | 6 | ||||
| -rw-r--r-- | sdl2/render.scm | 26 |
3 files changed, 27 insertions, 11 deletions
diff --git a/doc/api.texi b/doc/api.texi index 57e92d3..5be763c 100644 --- a/doc/api.texi +++ b/doc/api.texi @@ -1049,8 +1049,10 @@ Display @var{renderer}. @deffn {Procedure} render-copy renderer @ texture @ - [#:srcrect] - [#:dstrect] + [#:angle 0] @ + [#:srcrect] @ + [#:dstrect] @ + [#:center] Copy @var{texture} to the rendering target of @var{renderer}. @end deffn diff --git a/sdl2/bindings.scm b/sdl2/bindings.scm index c314a23..854bdc9 100644 --- a/sdl2/bindings.scm +++ b/sdl2/bindings.scm @@ -53,6 +53,9 @@ RETURN-TYPE and accept arguments of ARG-TYPES." (define-public sdl-rect (list int int int int)) +(define-public sdl-point + (list int int)) + (define sdl-bool int) (define-public (boolean->sdl-bool b) @@ -233,6 +236,9 @@ RETURN-TYPE and accept arguments of ARG-TYPES." (define-foreign sdl-render-copy int "SDL_RenderCopy" '(* * * *)) +(define-foreign sdl-render-copy-ex + int "SDL_RenderCopyEx" (list '* '* '* '* double '* int)) + (define-foreign sdl-create-texture-from-surface '* "SDL_CreateTextureFromSurface" '(* *)) diff --git a/sdl2/render.scm b/sdl2/render.scm index e2fb05c..c91699d 100644 --- a/sdl2/render.scm +++ b/sdl2/render.scm @@ -127,15 +127,23 @@ color." (sdl-error "surface->texture" "failed to convert surface to texture") (wrap-texture ptr)))) -(define* (render-copy renderer texture #:key srcrect dstrect) + +(define* (render-copy renderer texture + #:key (angle 0) srcrect dstrect center) "Copy TEXTURE to the rendering target of RENDERER." - (let ((result (ffi:sdl-render-copy (unwrap-renderer renderer) - (unwrap-texture texture) - (if srcrect - (make-c-struct ffi:sdl-rect srcrect) - %null-pointer) - (if dstrect - (make-c-struct ffi:sdl-rect dstrect) - %null-pointer)))) + (let ((result (ffi:sdl-render-copy-ex + (unwrap-renderer renderer) + (unwrap-texture texture) + (if srcrect + (make-c-struct ffi:sdl-rect srcrect) + %null-pointer) + (if dstrect + (make-c-struct ffi:sdl-rect dstrect) + %null-pointer) + angle + (if center + (make-c-struct ffi:sdl-point center) + %null-pointer) + 0))) (unless (zero? result) (sdl-error "render-copy" "failed to copy texture")))) |