X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fglx%2Fmoebius.c;h=5fe2d9b8a8c4f43438ee51932eff61010bd6ff5a;hb=39809ded547bdbb08207d3e514950425215b4410;hp=8c92ff7f073844886c58459ccb657752de1efc8c;hpb=aa75c7476aeaa84cf3abc192b376a8b03c325213;p=xscreensaver

diff --git a/hacks/glx/moebius.c b/hacks/glx/moebius.c
index 8c92ff7f..5fe2d9b8 100644
--- a/hacks/glx/moebius.c
+++ b/hacks/glx/moebius.c
@@ -79,7 +79,8 @@ static const char sccsid[] = "@(#)moebius.c	5.01 2001/03/01 xlockmore";
 
 #ifdef STANDALONE
 # define MODE_moebius
-# define refresh_moebius 0
+# define free_moebius 0
+# define release_moebius 0
 # define DEFAULTS			"*delay:		20000   \n"			\
 							"*showFPS:      False   \n"			\
 							"*suppressRotationAnimation: True\n" \
@@ -148,7 +149,7 @@ ENTRYPOINT ModeSpecOpt moebius_opts =
 
 #ifdef USE_MODULES
 ModStruct   moebius_description =
-{"moebius", "init_moebius", "draw_moebius", "release_moebius",
+{"moebius", "init_moebius", "draw_moebius", (char *) NULL,
  "draw_moebius", "change_moebius", (char *) NULL, &moebius_opts,
  1000, 1, 1, 1, 4, 1.0, "",
  "Shows Moebius Strip II, an Escher-like GL scene with ants", 0, NULL};
@@ -563,8 +564,14 @@ ENTRYPOINT void
 reshape_moebius (ModeInfo * mi, int width, int height)
 {
 	moebiusstruct *mp = &moebius[MI_SCREEN(mi)];
+    int y = 0;
 
-	glViewport(0, 0, mp->WindW = (GLint) width, mp->WindH = (GLint) height);
+    if (width > height * 5) {   /* tiny window: show middle */
+      height = width;
+      y = -height/2;
+    }
+
+	glViewport(0, y, mp->WindW = (GLint) width, mp->WindH = (GLint) height);
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
 	glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0);
@@ -653,17 +660,6 @@ pinit(ModeInfo *mi)
 }
 
 
-
-ENTRYPOINT void
-release_moebius (ModeInfo * mi)
-{
-	if (moebius != NULL) {
-		(void) free((void *) moebius);
-		moebius = (moebiusstruct *) NULL;
-	}
-	FreeAllGL(mi);
-}
-
 ENTRYPOINT Bool
 moebius_handle_event (ModeInfo *mi, XEvent *event)
 {
@@ -683,11 +679,7 @@ init_moebius (ModeInfo * mi)
 {
 	moebiusstruct *mp;
 
-	if (moebius == NULL) {
-		if ((moebius = (moebiusstruct *) calloc(MI_NUM_SCREENS(mi),
-					    sizeof (moebiusstruct))) == NULL)
-			return;
-	}
+	MI_INIT (mi, moebius);
 	mp = &moebius[MI_SCREEN(mi)];
 	mp->step = NRAND(90);
 	mp->ant_position = NRAND(90);
@@ -764,7 +756,7 @@ draw_moebius (ModeInfo * mi)
 
 	/* moebius */
 	if (!draw_moebius_strip(mi)) {
-		release_moebius(mi);
+		MI_ABORT(mi);
 		return;
 	}