(else `(begin ,@code))))
(define-macro (progn-textures . code)
- `(let (values)
+ `(let ((result #f))
(init-video-mode)
(glEnable GL_TEXTURE_2D)
- (set! values (multiple-value-list (begin ,@code)))
+ (set! result (begin ,@code))
(glDisable GL_TEXTURE_2D)
- (apply values values)))
+ result))
(define (draw . vertexes)
(begin-draw (length vertexes))
(glEnd))
(define (begin-draw number-of-points)
- (cond ((= number-of-points 3) (glBegin GL_TRIANGLES))
+ (cond ((= number-of-points 2) (glBegin GL_LINES))
+ ((= number-of-points 3) (glBegin GL_TRIANGLES))
((= number-of-points 4) (glBegin GL_QUADS))))
(define (draw-vertexes vertexes)
(cond ((3d-mode?) (glVertex3f x y z))
(else (glVertex2f x y))))
-(define (load-image-for-texture filename)
- (init-video-mode)
+(define (load-image filename)
+ (init-sdl)
(let ((image (IMG_Load filename)))
+ (cond (image
+ (SDL_DisplayFormatAlpha image)))))
+
+(define (load-image-for-texture filename)
+ (init-sdl)
+ (let ((image (load-image filename)))
(cond (image
(let* ((width (surface-w image)) (height (surface-h image))
(power-2 (nearest-power-of-two (min width height)))
(resized-image #f))
(cond ((and (= width power-2) (= height power-2)) (values image width height))
(else (set! resized-image (resize-surface image power-2 power-2))
- (if resized-image (values resized-image width height)))))))))
+ (if resized-image (values resized-image width height))))))
+ (else
+ (values #f 0 0)))))
(define (resize-surface surface width height)
(let ((old-width (surface-w surface)) (old-height (surface-h surface)))
(zoomSurface surface zoomx zoomy 0))))))
(define* (load-texture filename #:key (min-filter GL_LINEAR) (mag-filter GL_LINEAR))
- (progn-textures
- (receive
- (image real-w real-h) (load-image-for-texture filename)
- (cond (image
- (let ((width (get-surface-width image)) (height (get-surface-height 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)
- texture))))))
+ (let* ((key (list filename min-filter mag-filter))
+ (res (get-resource-from-cache key)))
+ (cond (res res)
+ (else
+ (progn-textures
+ (receive
+ (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 4 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)
+ (set-texture-size! texture real-w real-h)
+ (insert-resource-into-cache key texture)
+ texture)))))))))
(define* (draw-image filename #:optional (zoom 1))
(let ((texture (load-texture filename)))
(height (texture-h texture)))
(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)))
-
-(defun draw-square (&key (size 1) texture)
- (draw-rectangle size size :texture texture))
-
-(defun draw-cube (&key (size 1) texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6)
- (let ((-size (neg size)))
+(define* (draw-line length #:optional color)
+ (let ((l (/ length 2)))
+ (cond (color
+ (with-color color (draw (list 0 l) (list 0 (- l)))))
+ (else
+ (draw (list 0 l) (list 0 (- l)))))))
+
+(define* (draw-quad v1 v2 v3 v4 #:key texture color)
+ (cond (texture
+ (progn-textures
+ (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)))
+ (color
+ (with-color color (draw v1 v2 v3 v4)))
+ (else
+ (draw v1 v2 v3 v4))))
+
+(define* (draw-rectangle width height #:key texture color)
+ (let ((w (/ width 2)) (h (/ height 2)))
+ (draw-quad (list (- w) h 0)
+ (list w h 0)
+ (list w (- h) 0)
+ (list (- w) (- h) 0)
+ #:texture texture
+ #:color color)))
+
+(define* (draw-square #:key (size 1) texture color)
+ (draw-rectangle size size #:texture texture #:color color))
+
+(define* (draw-cube #:key (size 1)
+ texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6
+ color color-1 color-2 color-3 color-4 color-5 color-6)
+ (let ((-size (- size)))
(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))
+ (draw-quad (list -size size size) (list size size size) (list size -size size) (list -size -size size) #:texture (or texture-1 texture) #:color (or color-1 color))
(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))
+ (draw-quad (list -size -size -size) (list size -size -size) (list size size -size) (list -size size -size) #:texture (or texture-2 texture) #:color (or color-2 color))
(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))
+ (draw-quad (list size size size) (list -size size size) (list -size size -size) (list size size -size) #:texture (or texture-3 texture) #:color (or color-3 color))
(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))
+ (draw-quad (list -size -size size) (list size -size size) (list size -size -size) (list -size -size -size) :texture (or texture-4 texture) #:color (or color-4 color))
(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))
+ (draw-quad (list size -size -size) (list size -size size) (list size size size) (list size size -size) :texture (or texture-5 texture) #:color (or color-5 color))
(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)))))
+ (draw-quad (list -size -size size) (list -size -size -size) (list -size size -size) (list -size size size) :texture (or texture-6 texture) #:color (or color-6 color)))))
-(defun add-light (&key light position ambient (id GL_LIGHT1) (turn-on t))
+(define* (add-light #:key light position ambient (id GL_LIGHT1) (turn-on t))
(init-lighting)
(and light (glLightfv id GL_DIFFUSE (first light) (second light) (third light) (fourth light)))
(and light position (glLightfv GL_POSITION (first position) (second position) (third position) (fourth position)))
(and turn-on (glEnable id))
id)
-(defun translate (x y &optional (z 0))
+(define* (translate x y #:optional (z 0))
(glTranslatef x y z))
-(defun rotate (&rest rot)
- (cond ((3d-mode?) (apply #'3d-rotate rot))
- (t (apply #'2d-rotate rot))))
+(define* (rotate #:rest rot)
+ (cond ((3d-mode?) (apply 3d-rotate rot))
+ (else (apply 2d-rotate rot))))
-(defun 3d-rotate (xrot yrot zrot)
+(define (3d-rotate xrot yrot zrot)
(glRotatef xrot 1 0 0)
(glRotatef yrot 0 1 0)
(glRotatef zrot 0 0 1))
-(defun 2d-rotate (rot)
+(define (2d-rotate rot)
(glRotatef rot 0 0 1))
-(defun to-origin ()
+(define (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))))
+(define set-camera #f)
+(define camera-look #f)
- (defun camera-look ()
- (apply #'gluLookAt (concatenate 'list camera-eye camera-center camera-up))))
+(let ((camera-eye '(0 0 0)) (camera-center '(0 0 -100)) (camera-up '(0 1 0)))
+ (set! set-camera
+ (lambda* (#:key eye center up)
+ (cond (eye (set! camera-eye eye)))
+ (cond (center (set! camera-center center)))
+ (cond (up (set! camera-up up)))))
+
+ (set! camera-look
+ (lambda ()
+ (apply gluLookAt (append camera-eye camera-center camera-up)))))
projects / gacela.git / blobdiff