;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-(in-package :gacela)
-(let ((mode '2d))
- (defun 2d-mode ()
- (glDisable GL_DEPTH_TEST)
- (setq mode '2d))
-
- (defun 3d-mode ()
- (glEnable GL_DEPTH_TEST)
- (setq mode '3d))
-
- (defun 3d-mode? ()
- (eq mode '3d)))
+(eval-when (compile load eval)
+ (when (not (find-package 'gacela)) (make-package 'gacela :nicknames '(gg) :use '(lisp)))
+ (in-package 'gacela :nicknames '(gg) :use '(lisp)))
+
+
+(defmacro with-color (color &body code)
+ (cond (color
+ `(let ((original-color (get-current-color))
+ result)
+ (apply #'set-current-color ,color)
+ (setq result ,@code)
+ (apply #'set-current-color original-color)
+ result))
+ (t
+ `(progn
+ ,@code))))
+
+(defmacro progn-textures (&body code)
+ `(let (values)
+ (init-video-mode)
+ (glEnable GL_TEXTURE_2D)
+ (setq values (multiple-value-list (progn ,@code)))
+ (glDisable GL_TEXTURE_2D)
+ (apply #'values values)))
(defun draw (&rest vertexes)
(begin-draw (length vertexes))
(draw-vertexes (cdr vertexes)))))
(defun draw-vertex (vertex &key texture-coord)
- (cond ((consp (car vertex)) (draw-color (car vertex)) (apply #'simple-draw-vertex (cadr vertex)))
+ (cond ((consp (car vertex))
+ (with-color (car vertex)
+ (apply #'simple-draw-vertex (cadr vertex))))
(t (cond (texture-coord (apply #'glTexCoord2f texture-coord)))
(apply #'simple-draw-vertex vertex))))
(cond ((3d-mode?) (glVertex3f x y z))
(t (glVertex2f x y))))
-(defun draw-color (color)
- (apply #'glColor3f color))
-
(defun load-image-for-texture (filename)
(init-video-mode)
(let ((image (IMG_Load filename)))
(cond ((/= image 0)
(let* ((width (surface-w image)) (height (surface-h image))
(power-2 (nearest-power-of-two (min width height)))
- (zoomx (/ power-2 width)) (zoomy (/ power-2 height))
- zoomed-image)
- (cond ((and (= zoomx 1) (= zoomy 1)) (values image width height))
- (t (setq zoomed-image (zoomSurface image zoomx zoomy 0))
+ resized-image)
+ (cond ((and (= width power-2) (= height power-2)) (values image width height))
+ (t (setq resized-image (resize-surface image power-2 power-2))
(SDL_FreeSurface image)
- (cond ((/= zoomed-image 0) (values zoomed-image width height))))))))))
-
-(defun load-texture (filename &optional (min-filter GL_LINEAR) (mag-filter GL_LINEAR))
- (init-textures)
- (init-video-mode)
- (multiple-value-bind
- (image real-w real-h) (load-image-for-texture filename)
- (cond (image
- (let ((width (surface-w image)) (height (surface-h image))
- (texture (car (glGenTextures 1))))
- (glBindTexture GL_TEXTURE_2D texture)
- (glTexImage2D GL_TEXTURE_2D 0 3 width height 0 GL_RGBA GL_UNSIGNED_BYTE (surface-pixels image))
- (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
- (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
- (SDL_FreeSurface image)
- (values texture real-w real-h))))))
-
-(defun draw-image-function (filename)
- (multiple-value-bind
- (texture width height) (load-texture filename)
- (cond (texture
- (lambda (&optional (f 1))
- (draw-rectangle (* f width) (* f height) :texture texture))))))
-
-(defun draw-quad (v1 v2 v3 v4 &key texture color)
- (cond (texture (glBindTexture GL_TEXTURE_2D texture)
- (begin-draw 4)
- (draw-vertex v1 :texture-coord '(0 0))
- (draw-vertex v2 :texture-coord '(1 0))
- (draw-vertex v3 :texture-coord '(1 1))
- (draw-vertex v4 :texture-coord '(0 1))
- (glEnd))
- (t (cond (color (draw-color color)))
- (draw v1 v2 v3 v4))))
-
-(defun draw-rectangle (width height &key texture color)
+ (cond ((/= resized-image 0) (values resized-image width height))))))))))
+
+(defun resize-surface (surface width height)
+ (let ((old-width (surface-w surface)) (old-height (surface-h surface)))
+ (cond ((and (= width old-width) (= height old-height)) surface)
+ (t (let ((zoomx (/ (+ width 0.5) old-width)) (zoomy (/ (+ height 0.5) old-height)))
+ (zoomSurface surface zoomx zoomy 0))))))
+
+(defun load-texture (filename &key (min-filter GL_LINEAR) (mag-filter GL_LINEAR) static)
+ (let ((key (make-resource-texture :filename filename :min-filter min-filter :mag-filter mag-filter)))
+ (cond ((get-resource key) key)
+ (t (true-load-texture filename min-filter mag-filter static)))))
+
+(defun true-load-texture (filename min-filter mag-filter static)
+ (let ((key (make-resource-texture :filename filename :min-filter min-filter :mag-filter mag-filter)))
+ (progn-textures
+ (multiple-value-bind
+ (image real-w real-h) (load-image-for-texture filename)
+ (cond (image
+ (let ((width (surface-w image)) (height (surface-h image))
+ (byteorder (if (= (SDL_ByteOrder) SDL_LIL_ENDIAN)
+ (if (= (surface-format-BytesPerPixel image) 3) GL_BGR GL_BGRA)
+ (if (= (surface-format-BytesPerPixel image) 3) GL_RGB GL_RGBA)))
+ (texture (car (glGenTextures 1))))
+
+ (glBindTexture GL_TEXTURE_2D texture)
+ (glTexImage2D GL_TEXTURE_2D 0 3 width height 0 byteorder GL_UNSIGNED_BYTE (surface-pixels image))
+ (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MIN_FILTER min-filter)
+ (glTexParameteri GL_TEXTURE_2D GL_TEXTURE_MAG_FILTER mag-filter)
+ (SDL_FreeSurface image)
+ (set-resource key
+ `(:id-texture ,texture :width ,real-w :height ,real-h)
+ (lambda () (true-load-texture filename min-filter mag-filter static))
+ (lambda () (glDeleteTextures 1 `(,texture)))
+ :static static)
+ key)))))))
+
+(defun draw-image (filename &ptional (zoom 1))
+ (let ((texture (load-texture filename)))
+ (cond (texture (draw-texture texture zoom)))))
+
+(defun draw-texture (texture &optional (zoom 1))
+ (cond (texture
+ (let ((width (getf (get-resource texture) :width))
+ (height (getf (get-resource texture) :height)))
+ (draw-rectangle (* zoom width) (* zoom height) :texture texture)))))
+
+(defun draw-quad (v1 v2 v3 v4 &key texture)
+ (let ((id-texture (getf (get-resource texture) :id-texture)))
+ (cond (id-texture
+ (progn-textures
+ (glBindTexture GL_TEXTURE_2D id-texture)
+ (begin-draw 4)
+ (draw-vertex v1 :texture-coord '(0 0))
+ (draw-vertex v2 :texture-coord '(1 0))
+ (draw-vertex v3 :texture-coord '(1 1))
+ (draw-vertex v4 :texture-coord '(0 1))
+ (glEnd)))
+ ((consp texture) (with-color texture (draw v1 v2 v3 v4)))
+ (t (draw v1 v2 v3 v4)))))
+
+(defun draw-rectangle (width height &key texture)
(let* ((w (/ width 2)) (-w (neg w)) (h (/ height 2)) (-h (neg h)))
- (draw-quad (list -w h 0) (list w h 0) (list w -h 0) (list -w -h 0) :texture texture :color color)))
+ (draw-quad (list -w h 0) (list w h 0) (list w -h 0) (list -w -h 0) :texture texture)))
-(defun draw-square (&key (size 1) texture color)
- (draw-rectangle size size :texture texture :color color))
+(defun draw-square (&key (size 1) texture)
+ (draw-rectangle size size :texture texture))
-(defun draw-cube (&key size texture color)
+(defun draw-cube (&key (size 1) texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6)
(let ((-size (neg size)))
- (enable :textures texture)
- (glNormal3f 0 0 1)
- (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) :texture texture :color color)
- (glNormal3f 0 0 -1)
- (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) :texture texture :color color)
- (glNormal3f 0 1 0)
- (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) :texture texture :color color)
- (glNormal3f 0 -1 0)
- (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture texture :color color)
- (glNormal3f 1 0 0)
- (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture texture :color color)
- (glNormal3f -1 0 0)
- (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture texture :color color)))
+ (progn-textures
+ (glNormal3f 0 0 1)
+ (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) :texture (or texture-1 texture))
+ (glNormal3f 0 0 -1)
+ (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) :texture (or texture-2 texture))
+ (glNormal3f 0 1 0)
+ (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) :texture (or texture-3 texture))
+ (glNormal3f 0 -1 0)
+ (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture (or texture-4 texture))
+ (glNormal3f 1 0 0)
+ (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture (or texture-5 texture))
+ (glNormal3f -1 0 0)
+ (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture (or texture-6 texture)))))
(defun add-light (&key light position ambient (id GL_LIGHT1) (turn-on t))
(init-lighting)
(defun translate (x y &optional (z 0))
(glTranslatef x y z))
-(defun rotate (xrot yrot &optional zrot)
+(defun rotate (&rest rot)
+ (cond ((3d-mode?) (apply #'3d-rotate rot))
+ (t (apply #'2d-rotate rot))))
+
+(defun 3d-rotate (xrot yrot zrot)
(glRotatef xrot 1 0 0)
(glRotatef yrot 0 1 0)
- (cond (zrot (glRotatef zrot 0 0 1))))
+ (glRotatef zrot 0 0 1))
+
+(defun 2d-rotate (rot)
+ (glRotatef rot 0 0 1))
+
+(defun to-origin ()
+ (glLoadIdentity)
+ (cond ((3d-mode?) (camera-look))))
+
+(let ((camera-eye '(0 0 0)) (camera-center '(0 0 -100)) (camera-up '(0 1 0)))
+ (defun set-camera (&key eye center up)
+ (cond (eye (setq camera-eye eye)))
+ (cond (center (setq camera-center center)))
+ (cond (up (setq camera-up up))))
-(defun enable (&key textures)
- (cond (textures (glEnable GL_TEXTURE_2D))))
\ No newline at end of file
+ (defun camera-look ()
+ (apply #'gluLookAt (concatenate 'list camera-eye camera-center camera-up))))
projects / gacela.git / blobdiff