X-Git-Url: https://git.jsancho.org/?a=blobdiff_plain;f=gacela_draw.lisp;h=15b61e0ca96f0ba03d2b7d70e6d7bb21d603c435;hb=3c076309ea8727753bf689c3524d20116f45a0a3;hp=4b6f58fb126ec746a7c6b0b9d995226ae29bc03e;hpb=862921d72ab5a90aee46074c40da8c0688a3a20d;p=gacela.git

diff --git a/gacela_draw.lisp b/gacela_draw.lisp
index 4b6f58f..15b61e0 100644
--- a/gacela_draw.lisp
+++ b/gacela_draw.lisp
@@ -128,7 +128,7 @@
 (defun draw-square (&key (size 1) texture)
   (draw-rectangle size size :texture texture))
 
-(defun draw-cube (&key size texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6)
+(defun draw-cube (&key (size 1) texture texture-1 texture-2 texture-3 texture-4 texture-5 texture-6)
   (let ((-size (neg size)))
     (progn-textures
      (glNormal3f 0 0 1)
@@ -155,10 +155,27 @@
 (defun translate (x y &optional (z 0))
   (glTranslatef x y z))
 
-(defun rotate (xrot yrot 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)
   (glRotatef zrot 0 0 1))
 
 (defun 2d-rotate (rot)
-  (rotate 0 0 rot))
\ No newline at end of file
+  (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 camera-look ()
+    (apply #'gluLookAt (concatenate 'list camera-eye camera-center camera-up))))