-/* -*- Mode: C; tab-width: 4 -*-
- * superquadrics.c --- 3D mathematical shapes
- */
-#if !defined( lint ) && !defined( SABER )
-static const char sccsid[] = "@(#)superquadrics.c 4.04 97/07/28 xlockmore";
+/* -*- Mode: C; tab-width: 4 -*- */
+/* superquadrics --- 3D mathematical shapes */
+
+#if 0
+static const char sccsid[] = "@(#)superquadrics.c 4.07 97/11/24 xlockmore";
#endif
-/* Permission to use, copy, modify, and distribute this software and its
+
+/*-
+ * Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* Ed Mackey
*/
-/*-
- * due to a Bug/feature in VMS X11/Intrinsic.h has to be placed before xlock.
- * otherwise caddr_t is not defined correctly
- */
-
-#include <X11/Intrinsic.h>
-
#ifdef STANDALONE
-# define PROGCLASS "Superquadrics"
-# define HACK_INIT init_superquadrics
-# define HACK_DRAW draw_superquadrics
-# define superquadrics_opts xlockmore_opts
-# define DEFAULTS "*count: 25 \n" \
+# define DEFAULTS "*delay: 40000 \n" \
+ "*count: 25 \n" \
"*cycles: 40 \n" \
- "*delay: 100 \n" \
+ "*showFPS: False \n" \
"*wireframe: False \n"
+# define superquadrics_handle_event 0
# include "xlockmore.h" /* from the xscreensaver distribution */
#else /* !STANDALONE */
# include "xlock.h" /* from the xlockmore distribution */
static XrmOptionDescRec opts[] =
{
- {"-spinspeed", ".superquadrics.spinspeed", XrmoptionSepArg, (caddr_t) NULL}
+ {"-spinspeed", ".superquadrics.spinspeed", XrmoptionSepArg, 0}
};
static argtype vars[] =
{
- {(caddr_t *) & spinspeed, "spinspeed", "Spinspeed", DEF_SPINSPEED, t_Float}
+ {&spinspeed, "spinspeed", "Spinspeed", DEF_SPINSPEED, t_Float}
};
static OptionStruct desc[] =
{
{"-spinspeed num", "speed of rotation, in degrees per frame"}
};
-ModeSpecOpt superquadrics_opts =
-{1, opts, 1, vars, desc};
+ENTRYPOINT ModeSpecOpt superquadrics_opts =
+{sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
+
+#ifdef USE_MODULES
+ModStruct superquadrics_description =
+{"superquadrics", "init_superquadrics", "draw_superquadrics", "release_superquadrics",
+ "refresh_superquadrics", "init_superquadrics", NULL, &superquadrics_opts,
+ 1000, 25, 40, 1, 4, 1.0, "",
+ "Shows 3D mathematical shapes", 0, NULL};
-#include <GL/glu.h>
+#endif
#define MaxRes 50
#define MinRes 5
} state;
typedef struct {
- GLXContext glx_context;
+ GLXContext *glx_context;
int dist, wireframe, flatshade, shownorms, maxcount, maxwait;
int counter, viewcount, viewwait, mono;
GLfloat curmat[4][4], rotx, roty, rotz, spinspeed;
double xExponent, yExponent, Mode;
int resolution;
state now, later;
+
+ int pats[4][4];
+ int cullmode;
+
} superquadricsstruct;
static superquadricsstruct *superquadrics = NULL;
static void
MakeUpStuff(int allstuff, superquadricsstruct * sp)
{
- static int pats[4][4] =
- {
- {0, 0, 0, 0},
- {0, 1, 0, 1},
- {0, 0, 1, 1},
- {0, 1, 1, 0}
- };
-
int dostuff;
int t, pat;
GLfloat r, g, b, r2, g2, b2;
}
if (dostuff & 4) {
if (sp->mono) {
- b = g = r = (GLfloat) (140 + myrand(100)) / 255.0;
- b2 = g2 = r2 = ((r > 0.69) ? (1.0 - r) : r);
+ if (sp->wireframe) {
+ b = g = r = 1.0;
+ b2 = g2 = r2 = 1.0;
+ } else {
+ b = g = r = (GLfloat) (140 + myrand(100)) / 255.0;
+ b2 = g2 = r2 = ((r > 0.69) ? (1.0 - r) : r);
+ }
} else {
r = (GLfloat) (40 + myrand(200)) / 255.0;
g = (GLfloat) (40 + myrand(200)) / 255.0;
pat = myrand(4);
for (t = 0; t < 4; ++t) {
- sp->later.r[t] = pats[pat][t] ? r : r2;
- sp->later.g[t] = pats[pat][t] ? g : g2;
- sp->later.b[t] = pats[pat][t] ? b : b2;
+ sp->later.r[t] = sp->pats[pat][t] ? r : r2;
+ sp->later.g[t] = sp->pats[pat][t] ? g : g2;
+ sp->later.b[t] = sp->pats[pat][t] ? b : b2;
}
}
if (dostuff & 8) {
static void
SetCull(int init, superquadricsstruct * sp)
{
- static int cullmode;
-
if (init) {
- cullmode = 0;
+ glDisable(GL_CULL_FACE);
+ sp->cullmode = 0;
return;
}
if (sp->Mode < 1.0001) {
- if (cullmode != 1) {
+ if (sp->cullmode != 1) {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
- cullmode = 1;
+ sp->cullmode = 1;
}
} else if (sp->Mode > 2.9999) {
- if (cullmode != 2) {
+ if (sp->cullmode != 2) {
glEnable(GL_CULL_FACE);
glCullFace(GL_FRONT);
- cullmode = 2;
+ sp->cullmode = 2;
}
} else {
- if (cullmode) {
+ if (sp->cullmode) {
glDisable(GL_CULL_FACE);
- cullmode = 0;
+ sp->cullmode = 0;
}
}
}
if (sp->viewcount < 1) {
sp->viewcount = sp->viewwait;
- ReshapeSuperquadrics(-1, -1);
+/* ReshapeSuperquadrics(-1, -1);*/
}
glPushMatrix();
glTranslatef(0.0, 0.0, -((GLfloat) (sp->dist) / 16.0) - (sp->Mode * 3.0 - 1.0)); /* viewing transform */
static void
ReshapeSuperquadrics(int w, int h)
{
- static int last_w = 0, last_h = 0;
+#if 0
int maxsize, cursize;
- if (w < 0) {
- w = last_w;
- h = last_h;
- } else {
- last_w = w;
- last_h = h;
- }
maxsize = (w < h) ? w : h;
if (maxsize <= MINSIZE) {
cursize = maxsize;
} else {
glViewport(0, 0, w, h);
}
+#else
+ glViewport(0, 0, w, h);
+#endif
+
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
- gluPerspective(30.0, (GLfloat) w / (GLfloat) h, 0.1, 200.0);
+ gluPerspective(15.0, (GLfloat) w / (GLfloat) h, 0.1, 200.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}
int t;
- for (t = 0; t < 4; ++t)
+ for (t = 0; t < 4; ++t) {
+ sp->curmat[t][0] = 0.0;
+ sp->curmat[t][1] = 0.0;
+ sp->curmat[t][2] = 0.0;
sp->curmat[t][3] = 1.0;
+ }
sp->rotx = 35.0;
sp->roty = 0.0;
sp->maxwait = sp->maxcount >> 1;
SetCull(1, sp);
+ sp->mono = 0;
sp->spinspeed = speed;
sp->viewcount = sp->viewwait = (sp->maxcount < 2) ? 1 : (sp->maxcount << 3);
if (snorm)
sp->shownorms = 1;
+ glClearColor(0.0,0.0,0.0,1.0);
+ glClearDepth(1.0);
+
if (sp->wireframe) {
glShadeModel(GL_FLAT);
glDisable(GL_LIGHTING);
/* End of superquadrics main functions */
-void
+ENTRYPOINT void
init_superquadrics(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
return;
}
sp = &superquadrics[screen];
- sp->mono = (MI_WIN_IS_MONO(mi) ? 1 : 0);
+ sp->mono = (MI_IS_MONO(mi) ? 1 : 0);
- sp->glx_context = init_GL(mi);
+ sp->pats[1][1] = 1;
+ sp->pats[1][3] = 1;
+ sp->pats[2][2] = 1;
+ sp->pats[2][3] = 1;
+ sp->pats[3][1] = 1;
+ sp->pats[3][2] = 1;
- InitSuperquadrics(MI_WIN_IS_WIREFRAME(mi) || sp->mono, 0,
- MI_BATCHCOUNT(mi), MI_CYCLES(mi), spinspeed, sp);
- ReshapeSuperquadrics(MI_WIN_WIDTH(mi), MI_WIN_HEIGHT(mi));
+/* {0, 0, 0, 0},
+ {0, 1, 0, 1},
+ {0, 0, 1, 1},
+ {0, 1, 1, 0}
+ */
- DisplaySuperquadrics(sp);
- glFinish();
- glXSwapBuffers(display, window);
-}
+ if ((sp->glx_context = init_GL(mi)) != NULL) {
-void
-refresh_superquadrics(ModeInfo * mi)
-{
- /* Nothing happens here */
+ InitSuperquadrics(MI_IS_WIREFRAME(mi), 0,
+ MI_COUNT(mi), MI_CYCLES(mi), spinspeed, sp);
+ ReshapeSuperquadrics(MI_WIDTH(mi), MI_HEIGHT(mi));
+
+ DisplaySuperquadrics(sp);
+ glFinish();
+ glXSwapBuffers(display, window);
+ } else {
+ MI_CLEARWINDOW(mi);
+ }
}
-void
+ENTRYPOINT void
draw_superquadrics(ModeInfo * mi)
{
superquadricsstruct *sp = &superquadrics[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
- glXMakeCurrent(display, window, sp->glx_context);
+ if (!sp->glx_context)
+ return;
+
+ glXMakeCurrent(display, window, *(sp->glx_context));
NextSuperquadricDisplay(sp);
+ if (mi->fps_p) do_fps (mi);
glFinish();
glXSwapBuffers(display, window);
}
-void
-release_superquadrics(ModeInfo * mi)
+ENTRYPOINT void
+refresh_superquadrics(ModeInfo * mi)
{
- if (superquadrics != NULL) {
+ /* Nothing happens here */
+}
- /* Don't destroy the glXContext. init_GL does that. */
+ENTRYPOINT void
+reshape_superquadrics(ModeInfo * mi, int width, int height)
+{
+ ReshapeSuperquadrics(MI_WIDTH(mi), MI_HEIGHT(mi));
+}
+ENTRYPOINT void
+release_superquadrics(ModeInfo * mi)
+{
+ if (superquadrics != NULL) {
(void) free((void *) superquadrics);
superquadrics = NULL;
}
+ FreeAllGL(mi);
}
#endif
/* End of superquadrics.c */
+
+XSCREENSAVER_MODULE ("Superquadrics", superquadrics)