/* -*- Mode: C; tab-width: 4 -*- */
/* stairs --- Infinite Stairs, and Escher-like scene. */
-#if !defined( lint ) && !defined( SABER )
+#if 0
static const char sccsid[] = "@(#)stairs.c 4.07 97/11/24 xlockmore";
-
#endif
#undef DEBUG_LISTS
* In real OpenGL, PseudoColor DO NOT support texture map (as far as I know).
*/
-#include <X11/Intrinsic.h>
-
#ifdef STANDALONE
-# define PROGCLASS "Stairs"
-# define HACK_INIT init_stairs
-# define HACK_DRAW draw_stairs
-# define HACK_RESHAPE reshape_stairs
-# define stairs_opts xlockmore_opts
-# define DEFAULTS "*delay: 20000 \n" \
- "*showFPS: False \n" \
- "*wireframe: False \n"
+# define DEFAULTS "*delay: 20000 \n" \
+ "*showFPS: False \n"
+# define refresh_stairs 0
+# define stairs_handle_event 0
# include "xlockmore.h" /* from the xscreensaver distribution */
#else /* !STANDALONE */
# include "xlock.h" /* from the xlockmore distribution */
#ifdef USE_GL
-#include <GL/glu.h>
#include "e_textures.h"
-ModeSpecOpt stairs_opts =
+ENTRYPOINT ModeSpecOpt stairs_opts =
{0, NULL, 0, NULL, NULL};
#ifdef USE_MODULES
int sphere_position;
int sphere_tick;
GLXContext *glx_context;
+ GLuint objects;
} stairsstruct;
-static float front_shininess[] =
-{60.0};
-static float front_specular[] =
-{0.7, 0.7, 0.7, 1.0};
-static float ambient[] =
-{0.0, 0.0, 0.0, 1.0};
-static float diffuse[] =
-{1.0, 1.0, 1.0, 1.0};
-static float position0[] =
-{1.0, 1.0, 1.0, 0.0};
-static float position1[] =
-{-1.0, -1.0, 1.0, 0.0};
-static float lmodel_ambient[] =
-{0.5, 0.5, 0.5, 1.0};
-static float lmodel_twoside[] =
-{GL_TRUE};
+static const float front_shininess[] = {60.0};
+static const float front_specular[] = {0.7, 0.7, 0.7, 1.0};
+static const float ambient[] = {0.0, 0.0, 0.0, 1.0};
+static const float diffuse[] = {1.0, 1.0, 1.0, 1.0};
+static const float position0[] = {1.0, 1.0, 1.0, 0.0};
+static const float position1[] = {-1.0, -1.0, 1.0, 0.0};
+static const float lmodel_ambient[] = {0.5, 0.5, 0.5, 1.0};
+static const float lmodel_twoside[] = {GL_TRUE};
#if 0
-static float MaterialRed[] =
-{0.7, 0.0, 0.0, 1.0};
-static float MaterialGreen[] =
-{0.1, 0.5, 0.2, 1.0};
-static float MaterialBlue[] =
-{0.0, 0.0, 0.7, 1.0};
-static float MaterialCyan[] =
-{0.2, 0.5, 0.7, 1.0};
-static float MaterialMagenta[] =
-{0.6, 0.2, 0.5, 1.0};
-static float MaterialGray[] =
-{0.2, 0.2, 0.2, 1.0};
-static float MaterialGray5[] =
-{0.5, 0.5, 0.5, 1.0};
-static float MaterialGray6[] =
-{0.6, 0.6, 0.6, 1.0};
-static float MaterialGray8[] =
-{0.8, 0.8, 0.8, 1.0};
+static const float MaterialRed[] = {0.7, 0.0, 0.0, 1.0};
+static const float MaterialGreen[] = {0.1, 0.5, 0.2, 1.0};
+static const float MaterialBlue[] = {0.0, 0.0, 0.7, 1.0};
+static const float MaterialCyan[] = {0.2, 0.5, 0.7, 1.0};
+static const float MaterialMagenta[] = {0.6, 0.2, 0.5, 1.0};
+static const float MaterialGray[] = {0.2, 0.2, 0.2, 1.0};
+static const float MaterialGray5[] = {0.5, 0.5, 0.5, 1.0};
+static const float MaterialGray6[] = {0.6, 0.6, 0.6, 1.0};
+static const float MaterialGray8[] = {0.8, 0.8, 0.8, 1.0};
#endif
-static float MaterialYellow[] =
-{0.7, 0.7, 0.0, 1.0};
-static float MaterialWhite[] =
-{0.7, 0.7, 0.7, 1.0};
+static const float MaterialYellow[] = {0.7, 0.7, 0.0, 1.0};
+static const float MaterialWhite[] = {0.7, 0.7, 0.7, 1.0};
-static float positions[] =
+static const float positions[] =
{
-2.5, 4.0, 0.0, /* First one is FUDGED :) */
-3.0, 3.25, 1.0,
#define SPHERE_TICKS 8
static stairsstruct *stairs = NULL;
-static GLuint objects;
#define ObjSphere 0
sp->sphere_position = 0;
}
-void
-reshape_stairs(ModeInfo * mi, int width, int height)
+ENTRYPOINT void
+reshape_stairs (ModeInfo * mi, int width, int height)
{
stairsstruct *sp = &stairs[MI_SCREEN(mi)];
GL_RGB, GL_UNSIGNED_BYTE, WoodTextureData);
if (status)
{
- const char *s = gluErrorString (status);
+ const char *s = (char *) gluErrorString (status);
fprintf (stderr, "%s: error mipmapping %dx%d texture: %s\n",
progname, WoodTextureWidth, WoodTextureHeight,
(s ? s : "(unknown)"));
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_specular);
}
-void
-init_stairs(ModeInfo * mi)
+ENTRYPOINT void
+init_stairs (ModeInfo * mi)
{
int screen = MI_SCREEN(mi);
stairsstruct *sp;
}
sp = &stairs[screen];
sp->step = 0.0;
+
+ /* make multiple screens rotate at slightly different rates. */
+ sp->step -= frand(5.0);
+
sp->direction = LRAND() & 1;
sp->sphere_position = NRAND(NPOSITIONS / 3) * 3;
sp->sphere_tick = 0;
reshape_stairs(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
glDrawBuffer(GL_BACK);
- if (!glIsList(objects))
- objects = glGenLists(1);
+ if (!glIsList(sp->objects))
+ sp->objects = glGenLists(1);
pinit();
} else {
MI_CLEARWINDOW(mi);
}
}
-void
-draw_stairs(ModeInfo * mi)
+ENTRYPOINT void
+draw_stairs (ModeInfo * mi)
{
stairsstruct *sp = &stairs[MI_SCREEN(mi)];
sp->step += 0.025;
}
-void
-change_stairs(ModeInfo * mi)
+#ifndef STANDALONE
+ENTRYPOINT void
+change_stairs (ModeInfo * mi)
{
stairsstruct *sp = &stairs[MI_SCREEN(mi)];
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(sp->glx_context));
pinit();
}
+#endif /* !STANDALONE */
-void
-release_stairs(ModeInfo * mi)
+ENTRYPOINT void
+release_stairs (ModeInfo * mi)
{
if (stairs != NULL) {
- (void) free((void *) stairs);
- stairs = NULL;
- }
- if (glIsList(objects)) {
- glDeleteLists(objects, 1);
+ int i;
+ for (i = 0; i < MI_NUM_SCREENS(mi); i++) {
+ stairsstruct *sp = &stairs[i];
+ if (glIsList(sp->objects)) {
+ glDeleteLists(sp->objects, 1);
+ }
+ }
+ free(stairs);
+ stairs = NULL;
}
FreeAllGL(mi);
}
+XSCREENSAVER_MODULE ("Stairs", stairs)
+
#endif