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-rw-r--r--hacks/glx/surfaces.c652
1 files changed, 0 insertions, 652 deletions
diff --git a/hacks/glx/surfaces.c b/hacks/glx/surfaces.c
deleted file mode 100644
index d78944b..0000000
--- a/hacks/glx/surfaces.c
+++ /dev/null
@@ -1,652 +0,0 @@
-/* Surface --- Parametric 3d surfaces visualization */
-
-/*
- * Revision History:
- * 2000: written by Andrey Mirtchovski <mirtchov@cpsc.ucalgary.ca>
- *
- * 01-Mar-2003 mirtchov Modified as a xscreensaver hack.
- * 01-jan-2009 steger Renamed from klein.c to surfaces.c.
- * Removed the Klein bottle.
- * Added many new surfaces.
- * Added many command line options.
- *
- */
-
-/* surfaces to draw */
-#define SURFACE_RANDOM -1
-#define SURFACE_DINI 0
-#define SURFACE_ENNEPER 1
-#define SURFACE_KUEN 2
-#define SURFACE_MOEBIUS 3
-#define SURFACE_SEASHELL 4
-#define SURFACE_SWALLOWTAIL 5
-#define SURFACE_BOHEMIAN 6
-#define SURFACE_WHITNEY 7
-#define SURFACE_PLUECKER 8
-#define SURFACE_HENNEBERG 9
-#define SURFACE_CATALAN 10
-#define SURFACE_CORKSCREW 11
-#define NUM_SURFACES 12
-
-/* primitives to draw with
- * note that we skip the polygons and
- * triangle fans -- too slow
- *
- * also removed triangle_strip and quads --
- * just doesn't look good enough
- */
-#define RENDER_RANDOM -1
-#define RENDER_POINTS 0
-#define RENDER_LINES 1
-#define RENDER_LINE_LOOP 2
-#define NUM_RENDER 3
-
-#ifdef STANDALONE
-# define DEFAULTS "*delay: 20000 \n" \
- "*showFPS: False \n" \
- "*suppressRotationAnimation: True\n" \
-
-# define release_surface 0
-# include "xlockmore.h" /* from the xscreensaver distribution */
-#else /* !STANDALONE */
-# include "xlock.h" /* from the xlockmore distribution */
-#endif /* !STANDALONE */
-
-#ifdef USE_GL
-
-#define DEF_SURFACE "random"
-#define DEF_MODE "random"
-#define DEF_SPIN "True"
-#define DEF_WANDER "False"
-#define DEF_SPEED "300"
-
-#include "rotator.h"
-#include "gltrackball.h"
-
-static char *surface_type;
-static char *render_mode;
-static int render;
-static int speed;
-static Bool do_spin;
-static Bool do_wander;
-
-static XrmOptionDescRec opts[] = {
- { "-surface", ".surface", XrmoptionSepArg, 0 },
- { "-random-surface", ".surface", XrmoptionNoArg, "random" },
- { "-dini", ".surface", XrmoptionNoArg, "dini" },
- { "-enneper", ".surface", XrmoptionNoArg, "enneper" },
- { "-kuen", ".surface", XrmoptionNoArg, "kuen" },
- { "-moebius", ".surface", XrmoptionNoArg, "moebius" },
- { "-seashell", ".surface", XrmoptionNoArg, "seashell" },
- { "-swallowtail", ".surface", XrmoptionNoArg, "swallowtail" },
- { "-bohemian", ".surface", XrmoptionNoArg, "bohemian" },
- { "-whitney", ".surface", XrmoptionNoArg, "whitney" },
- { "-pluecker", ".surface", XrmoptionNoArg, "pluecker" },
- { "-henneberg", ".surface", XrmoptionNoArg, "henneberg" },
- { "-catalan", ".surface", XrmoptionNoArg, "catalan" },
- { "-corkscrew", ".surface", XrmoptionNoArg, "corkscrew" },
- { "-mode", ".mode", XrmoptionSepArg, 0 },
- { "-random-mode", ".mode", XrmoptionNoArg, "random" },
- { "-points", ".mode", XrmoptionNoArg, "points" },
- { "-lines", ".mode", XrmoptionNoArg, "lines" },
- { "-line-loops", ".mode", XrmoptionNoArg, "line-loops" },
- { "-speed", ".speed", XrmoptionSepArg, 0 },
- { "-spin", ".spin", XrmoptionNoArg, "True" },
- { "+spin", ".spin", XrmoptionNoArg, "False" },
- { "-wander", ".wander", XrmoptionNoArg, "True" },
- { "+wander", ".wander", XrmoptionNoArg, "False" },
-};
-
-static argtype vars[] = {
- {&surface_type, "surface", "Surface", DEF_SURFACE, t_String },
- {&render_mode, "mode", "Mode", DEF_MODE, t_String },
- {&do_spin, "spin", "Spin", DEF_SPIN, t_Bool },
- {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool },
- {&speed, "speed", "Speed", DEF_SPEED, t_Int },
-};
-
-
-ENTRYPOINT ModeSpecOpt surface_opts =
-{countof(opts), opts, countof(vars), vars, NULL};
-
-
-
-typedef struct {
- GLfloat x;
- GLfloat y;
- GLfloat z;
-} GL_VECTOR;
-
-typedef struct {
- GLXContext *glx_context;
- Window window;
- rotator *rot;
- trackball_state *trackball;
- Bool button_down_p;
-
- int render;
- Bool random_render;
- int surface;
- Bool random_surface;
- int frame;
-
- float du, dv;
- float a, b, c;
-
- float draw_step;
-} surfacestruct;
-
-static surfacestruct *surface = NULL;
-
-
-static void draw(ModeInfo *mi)
-{
- surfacestruct *sp = &surface[MI_SCREEN(mi)];
- double u, v;
- float coord[3];
- int render;
-
- mi->polygon_count = 0;
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glEnable(GL_DEPTH_TEST);
- glEnable(GL_NORMALIZE);
- glEnable(GL_CULL_FACE);
-
- glPushMatrix();
-
- {
- double x, y, z;
- get_position(sp->rot, &x, &y, &z, !sp->button_down_p);
- glTranslatef((x-0.5)*10, (y-0.5)*10, (z-0.5)*20);
-
- gltrackball_rotate(sp->trackball);
-
- get_rotation(sp->rot, &x, &y, &z, !sp->button_down_p);
- glRotatef(x*360, 1.0, 0.0, 0.0);
- glRotatef(y*360, 0.0, 1.0, 0.0);
- glRotatef(z*360, 0.0, 0.0, 1.0);
- }
-
- glScalef(4.0, 4.0, 4.0);
-
- switch(sp->surface)
- {
- case SURFACE_DINI:
- for (v=0.11; v<=2.0; v+=sp->dv)
- {
- glBegin(sp->render);
- for (u=0; u<=6.0*M_PI; u+=sp->du)
- {
- coord[0] = sp->a*cos(u)*sin(v);
- coord[1] = sp->a*sin(u)*sin(v);
- coord[2] = sp->a*(cos(v)+log(tan(0.5*v)))+0.2*sp->b*u;
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_ENNEPER:
- for (u=-M_PI; u<=M_PI; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=-M_PI; v<M_PI; v+=sp->dv)
- {
- coord[0] = sp->a*(u-(1.0/3.0*u*u*u)+u*v*v);
- coord[1] = sp->b*(v-(1.0/3.0*v*v*v)+u*u*v);
- coord[2] = u*u-v*v;
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_KUEN:
- for (u=-4.48; u<=4.48; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=M_PI/51; v<M_PI; v+=sp->dv)
- {
- coord[0] = 2*(cos(u)+u*sin(u))*sin(v)/(1+u*u*sin(v)*sin(v));
- coord[1] = 2*(sin(u)-u*cos(u))*sin(v)/(1+u*u*sin(v)*sin(v));
- coord[2] = log(tan(0.5*v))+2*cos(v)/(1+u*u*sin(v)*sin(v));
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_MOEBIUS:
- for (u=-M_PI; u<M_PI; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=-0.735; v<0.74; v+=sp->dv)
- {
- coord[0] = cos(u)+v*cos(u/2)*cos(u);
- coord[1] = sin(u)+v*cos(u/2)*sin(u);
- coord[2] = v*sin(u/2);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_SEASHELL:
- for (u=0; u<2*M_PI; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=0; v<2*M_PI; v+=sp->dv)
- {
- coord[0] = sp->a*(1-v/(2*M_PI))*cos(2*v)*(1+cos(u))+sp->c*cos(2*v);
- coord[1] = sp->a*(1-v/(2*M_PI))*sin(2*v)*(1+cos(u))+sp->c*sin(2*v);
- coord[2] = 2*sp->b*v/(2*M_PI)+sp->a*(1-v/(2*M_PI))*sin(u);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_SWALLOWTAIL:
- for (u=-2.5; u<2.0; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=-1.085; v<1.09; v+=sp->dv)
- {
- coord[0] = u*v*v+3*v*v*v*v;
- coord[1] = -2*u*v-4*v*v*v;
- coord[2] = u;
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_BOHEMIAN:
- for (u=-M_PI; u<M_PI; u+=sp->du)
- {
- glBegin(sp->render);
- for (v=-M_PI; v<M_PI; v+=sp->dv)
- {
- coord[0] = sp->a*cos(u);
- coord[1] = sp->b*cos(v)+sp->a*sin(u);
- coord[2] = sin(v);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_WHITNEY:
- for (v=-1.995; v<2.0; v+=sp->dv)
- {
- glBegin(sp->render);
- for (u=-1.995; u<2.0; u+=sp->du)
- {
- coord[0] = u*v;
- coord[1] = u;
- coord[2] = v*v-2;
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_PLUECKER:
- for (u=0; u<2.5; u+=sp->dv)
- {
- glBegin(sp->render);
- for (v=-M_PI; v<M_PI; v+=sp->du)
- {
- coord[0] = u*cos(v);
- coord[1] = u*sin(v);
- coord[2] = 2*cos(v)*sin(v);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_HENNEBERG:
- for (u=0.9; u<2.55; u+=sp->dv)
- {
- glBegin(sp->render);
- for (v=-M_PI; v<M_PI; v+=sp->du)
- {
- coord[0] = sinh(1.0/3.0*u)*cos(v)-1.0/3.0*sinh(u)*cos(3.0*v);
- coord[1] = sinh(1.0/3.0*u)*sin(v)+1.0/3.0*sinh(u)*sin(3.0*v);
- coord[2] = cosh(2.0/3.0*u)*cos(2.0*v);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_CATALAN:
- for (v=-2; v<2; v+=sp->du)
- {
- glBegin(sp->render);
- for (u=-2*M_PI; u<2*M_PI+0.05; u+=sp->dv)
- {
- coord[0] = 0.33*(u-sin(u)*cosh(v));
- coord[1] = 0.33*(1.0-cos(u)*cosh(v));
- coord[2] = 0.33*4.0*sin(0.5*u)*sinh(0.5*v);
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- case SURFACE_CORKSCREW:
- for (v=-M_PI; v<M_PI; v+=sp->du)
- {
- glBegin(sp->render);
- for (u=-M_PI; u<M_PI; u+=sp->dv)
- {
- coord[0] = 0.5*(sp->a+2.0)*cos(u)*cos(v);
- coord[1] = 0.5*(sp->a+2.0)*sin(u)*cos(v);
- coord[2] = 0.5*(sp->a+2.0)*sin(v)+u;
- glColor3f(coord[0]+0.7, coord[1]+0.7, coord[2]+0.7);
- glVertex3fv(coord);
- mi->polygon_count++;
- }
- glEnd();
- }
- break;
- }
- glPopMatrix();
-
- if (sp->render == GL_LINES)
- mi->polygon_count /= 2;
-
- sp->a = sin(sp->draw_step+=0.01);
- sp->b = cos(sp->draw_step+=0.01);
- sp->c = sin(sp->draw_step+0.25*M_PI);
-
- if (sp->random_surface || sp->random_render)
- {
- sp->frame++;
- if (sp->frame >= speed)
- {
- sp->frame = 0;
- if (sp->random_surface)
- sp->surface = random() % NUM_SURFACES;
- if (sp->random_render)
- {
- render = random() % NUM_RENDER;
- switch (render)
- {
- case RENDER_POINTS:
- sp->render = GL_POINTS;
- break;
- case RENDER_LINES:
- sp->render = GL_LINES;
- break;
- case RENDER_LINE_LOOP:
- if (sp->surface == SURFACE_BOHEMIAN ||
- sp->surface == SURFACE_PLUECKER ||
- sp->surface == SURFACE_HENNEBERG)
- sp->render = GL_LINE_LOOP;
- else
- sp->render = GL_LINE_STRIP;
- break;
- default:
- sp->render = GL_LINE_LOOP;
- break;
- }
- }
- }
- }
-}
-
-
-/* new window size or exposure */
-ENTRYPOINT void reshape_surface(ModeInfo *mi, int width, int height)
-{
- surfacestruct *sp = &surface[MI_SCREEN(mi)];
- GLfloat h = (GLfloat) height / (GLfloat) width;
- int y = 0;
-
- if (width > height * 5) { /* tiny window: show middle */
- height = width * 9/16;
- y = -height/2;
- h = height / (GLfloat) width;
- }
-
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *sp->glx_context);
-
- glViewport(0, y, (GLint) width, (GLint) height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective (30.0, 1/h, 1.0, 100.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- gluLookAt(0.0, 0.0, 30.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
-
- {
- GLfloat s = (MI_WIDTH(mi) < MI_HEIGHT(mi)
- ? (MI_WIDTH(mi) / (GLfloat) MI_HEIGHT(mi))
- : 1);
- glScalef (s, s, s);
- }
-
- glClear(GL_COLOR_BUFFER_BIT);
-}
-
-
-ENTRYPOINT Bool surface_handle_event(ModeInfo *mi, XEvent *event)
-{
- surfacestruct *sp = &surface[MI_SCREEN(mi)];
-
- if (gltrackball_event_handler (event, sp->trackball,
- MI_WIDTH (mi), MI_HEIGHT (mi),
- &sp->button_down_p))
- return True;
-
- return False;
-}
-
-
-ENTRYPOINT void init_surface(ModeInfo *mi)
-{
- int screen = MI_SCREEN(mi);
- surfacestruct *sp;
-
- MI_INIT (mi, surface);
- sp = &surface[screen];
-
- sp->window = MI_WINDOW(mi);
-
- {
- double spin_speed = 1.0;
- double wander_speed = 0.03;
- sp->rot = make_rotator(do_spin ? spin_speed : 0,
- do_spin ? spin_speed : 0,
- do_spin ? spin_speed : 0,
- 1.0,
- do_wander ? wander_speed : 0,
- True);
- sp->trackball = gltrackball_init (True);
- }
-
- if (!strcasecmp(surface_type,"random"))
- {
- sp->random_surface = True;
- sp->surface = random() % NUM_SURFACES;
- }
- else if (!strcasecmp(surface_type,"dini"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_DINI;
- }
- else if (!strcasecmp(surface_type,"enneper"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_ENNEPER;
- }
- else if (!strcasecmp(surface_type,"kuen"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_KUEN;
- }
- else if (!strcasecmp(surface_type,"moebius"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_MOEBIUS;
- }
- else if (!strcasecmp(surface_type,"seashell"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_SEASHELL;
- }
- else if (!strcasecmp(surface_type,"swallowtail"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_SWALLOWTAIL;
- }
- else if (!strcasecmp(surface_type,"bohemian"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_BOHEMIAN;
- }
- else if (!strcasecmp(surface_type,"whitney"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_WHITNEY;
- }
- else if (!strcasecmp(surface_type,"pluecker"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_PLUECKER;
- }
- else if (!strcasecmp(surface_type,"henneberg"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_HENNEBERG;
- }
- else if (!strcasecmp(surface_type,"catalan"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_CATALAN;
- }
- else if (!strcasecmp(surface_type,"corkscrew"))
- {
- sp->random_surface = False;
- sp->surface = SURFACE_CORKSCREW;
- }
- else
- {
- sp->random_surface = True;
- sp->surface = random() % NUM_SURFACES;
- }
-
- if (!strcasecmp(render_mode,"random"))
- {
- sp->random_render = True;
- render = random() % NUM_RENDER;
- }
- else if (!strcasecmp(render_mode,"points"))
- {
- sp->random_render = False;
- render = RENDER_POINTS;
- }
- else if (!strcasecmp(render_mode,"lines"))
- {
- sp->random_render = False;
- render = RENDER_LINES;
- }
- else if (!strcasecmp(render_mode,"line-loops"))
- {
- sp->random_render = False;
- render = RENDER_LINE_LOOP;
- }
- else
- {
- sp->random_render = True;
- render = random() % NUM_RENDER;
- }
-
- switch (render)
- {
- case RENDER_POINTS:
- sp->render = GL_POINTS;
- break;
- case RENDER_LINES:
- sp->render = GL_LINES;
- break;
- case RENDER_LINE_LOOP:
- if (sp->surface == SURFACE_BOHEMIAN ||
- sp->surface == SURFACE_PLUECKER ||
- sp->surface == SURFACE_HENNEBERG)
- sp->render = GL_LINE_LOOP;
- else
- sp->render = GL_LINE_STRIP;
- break;
- default:
- sp->render = GL_LINE_LOOP;
- break;
- }
-
- sp->frame = 0;
-
- sp->du = 0.07;
- sp->dv = 0.07;
- sp->a = sp->b = 1;
- sp->c = 0.1;
-
- if ((sp->glx_context = init_GL(mi)) != NULL)
- {
- reshape_surface(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
- }
- else
- {
- MI_CLEARWINDOW(mi);
- }
-}
-
-
-ENTRYPOINT void draw_surface(ModeInfo * mi)
-{
- surfacestruct *sp = &surface[MI_SCREEN(mi)];
- Display *display = MI_DISPLAY(mi);
- Window window = MI_WINDOW(mi);
-
- if (!sp->glx_context)
- return;
-
- glDrawBuffer(GL_BACK);
-
- glXMakeCurrent(display, window, *sp->glx_context);
- draw(mi);
- if (mi->fps_p)
- do_fps(mi);
- glFinish();
- glXSwapBuffers(display, window);
-}
-
-
-ENTRYPOINT void free_surface(ModeInfo * mi)
-{
- surfacestruct *sp = &surface[MI_SCREEN(mi)];
- if (!sp->glx_context) return;
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *sp->glx_context);
- gltrackball_free (sp->trackball);
- free_rotator (sp->rot);
-}
-
-
-XSCREENSAVER_MODULE_2("Surfaces", surfaces, surface)
-
-#endif
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