(no commit message)

[gacela.git] / gacela_draw.lisp

diff --git a/gacela_draw.lisp b/gacela_draw.lisp
index d992ba5d57cbcca68a40f7d3f1f44e32368e3b74..15b61e0ca96f0ba03d2b7d70e6d7bb21d603c435 100644 (file)
--- a/gacela_draw.lisp
+++ b/gacela_draw.lisp
@@ -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))))