diff options
Diffstat (limited to 'hacks/glx/boing.c')
| -rw-r--r-- | hacks/glx/boing.c | 665 |
1 files changed, 0 insertions, 665 deletions
diff --git a/hacks/glx/boing.c b/hacks/glx/boing.c deleted file mode 100644 index bf010be..0000000 --- a/hacks/glx/boing.c +++ /dev/null @@ -1,665 +0,0 @@ -/* boing, Copyright (c) 2005-2014 Jamie Zawinski <jwz@jwz.org> - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation. No representations are made about the suitability of this - * software for any purpose. It is provided "as is" without express or - * implied warranty. - * - * A clone of the Amiga 1000 "Boing" demo. This was the first graphics demo - * for the Amiga, written by Dale Luck and RJ Mical during a break at the 1984 - * Consumer Electronics Show (or so the legend goes.) The boing ball was - * briefly the official logo of Amiga Inc., until they were bought by - * Commodore later that year. - * - * With no arguments, this program looks a lot like the original Amiga demo. - * With "-smooth -lighting", it looks... less old. - * - * The amiga version made noise when the ball hit the walls. This version - * does not, obviously. - */ - -#define DEFAULTS "*delay: 30000 \n" \ - "*showFPS: False \n" \ - "*wireframe: False \n" \ - -# define release_boing 0 - -#include "xlockmore.h" -#include "gltrackball.h" -#include <ctype.h> - -#ifdef USE_GL /* whole file */ - - -#define DEF_SPIN "True" -#define DEF_LIGHTING "False" -#define DEF_SMOOTH "False" -#define DEF_SCANLINES "True" -#define DEF_SPEED "1.0" -#define DEF_BALL_SIZE "0.5" -#define DEF_ANGLE "15" -#define DEF_MERIDIANS "16" -#define DEF_PARALLELS "8" -#define DEF_TILES "12" -#define DEF_THICKNESS "0.05" - -#define DEF_BALL_COLOR1 "#CC1919" -#define DEF_BALL_COLOR2 "#F2F2F2" -#define DEF_GRID_COLOR "#991999" -#define DEF_SHADOW_COLOR "#303030" -#define DEF_BACKGROUND "#8C8C8C" - -typedef struct { GLfloat x, y, z; } XYZ; - -typedef struct { - GLXContext *glx_context; - trackball_state *trackball; - Bool button_down_p; - - GLfloat speed; - - GLuint ball_list; - double ball_x, ball_y, ball_z, ball_th; - double ball_dx, ball_dy, ball_dz, ball_dth; - double ball_ddx, ball_ddy, ball_ddz; - - GLfloat ball_color1[4], ball_color2[4], grid_color[4]; - GLfloat bg_color[4], shadow_color[4]; - GLfloat lightpos[4]; - -} boing_configuration; - -static boing_configuration *bps = NULL; - -static Bool spin; -static Bool lighting_p; -static Bool smooth_p; -static Bool scanlines_p; -static GLfloat speed; -static int angle; -static GLfloat ball_size; -static unsigned int meridians; -static unsigned int parallels; -static unsigned int tiles; -static GLfloat thickness; -static char *ball_color1_str, *ball_color2_str, *grid_color_str, - *shadow_str, *bg_str; - -static XrmOptionDescRec opts[] = { - { "-spin", ".spin", XrmoptionNoArg, "True" }, - { "+spin", ".spin", XrmoptionNoArg, "False" }, - { "-lighting", ".lighting", XrmoptionNoArg, "True" }, - { "+lighting", ".lighting", XrmoptionNoArg, "False" }, - { "-smooth", ".smooth", XrmoptionNoArg, "True" }, - { "+smooth", ".smooth", XrmoptionNoArg, "False" }, - { "-scanlines", ".scanlines", XrmoptionNoArg, "True" }, - { "+scanlines", ".scanlines", XrmoptionNoArg, "False" }, - { "-speed", ".speed", XrmoptionSepArg, 0 }, - { "-angle", ".angle", XrmoptionSepArg, 0 }, - { "-size", ".ballSize", XrmoptionSepArg, 0 }, - { "-meridians", ".meridians", XrmoptionSepArg, 0 }, - { "-parallels", ".parallels", XrmoptionSepArg, 0 }, - { "-tiles", ".tiles", XrmoptionSepArg, 0 }, - { "-thickness", ".thickness", XrmoptionSepArg, 0 }, - { "-ball-color1",".ballColor1",XrmoptionSepArg, 0 }, - { "-ball-color2",".ballColor2",XrmoptionSepArg, 0 }, - { "-grid-color", ".gridColor", XrmoptionSepArg, 0 }, - { "-shadow-color",".shadowColor",XrmoptionSepArg, 0 }, - { "-background", ".boingBackground",XrmoptionSepArg, 0 }, - { "-bg", ".boingBackground",XrmoptionSepArg, 0 }, -}; - -static argtype vars[] = { - {&spin, "spin", "Spin", DEF_SPIN, t_Bool}, - {&lighting_p,"lighting", "Lighting", DEF_LIGHTING, t_Bool}, - {&smooth_p, "smooth", "Smooth", DEF_SMOOTH, t_Bool}, - {&scanlines_p,"scanlines","Scanlines", DEF_SCANLINES, t_Bool}, - {&speed, "speed", "Speed", DEF_SPEED, t_Float}, - {&angle, "angle", "Angle", DEF_ANGLE, t_Int}, - {&ball_size, "ballSize", "BallSize", DEF_BALL_SIZE, t_Float}, - {&meridians, "meridians", "meridians", DEF_MERIDIANS, t_Int}, - {¶llels, "parallels", "parallels", DEF_PARALLELS, t_Int}, - {&tiles, "tiles", "Tiles", DEF_TILES, t_Int}, - {&thickness, "thickness", "Thickness", DEF_THICKNESS, t_Float}, - {&ball_color1_str, "ballColor1", "BallColor1", DEF_BALL_COLOR1, t_String}, - {&ball_color2_str, "ballColor2", "BallColor2", DEF_BALL_COLOR2, t_String}, - {&grid_color_str, "gridColor", "GridColor", DEF_GRID_COLOR, t_String}, - {&shadow_str, "shadowColor","ShadowColor",DEF_SHADOW_COLOR,t_String}, - /* dammit, -background is too magic... */ - {&bg_str, "boingBackground", "Background", DEF_BACKGROUND, t_String}, -}; - -ENTRYPOINT ModeSpecOpt boing_opts = {countof(opts), opts, countof(vars), vars, NULL}; - -static void -parse_color (ModeInfo *mi, const char *name, const char *s, GLfloat *a) -{ - XColor c; - a[3] = 1.0; /* alpha */ - - if (! XParseColor (MI_DISPLAY(mi), MI_COLORMAP(mi), s, &c)) - { - fprintf (stderr, "%s: can't parse %s color %s", progname, name, s); - exit (1); - } - a[0] = c.red / 65536.0; - a[1] = c.green / 65536.0; - a[2] = c.blue / 65536.0; -} - - -static void -draw_grid (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - int x, y; - GLfloat t2 = (GLfloat) tiles / 2; - GLfloat s = 1.0 / (tiles + thickness); - GLfloat z = 0; - - GLfloat lw = MI_HEIGHT(mi) * 0.06 * thickness; - - glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, bp->grid_color); - glColor3fv (bp->grid_color); - - glPushMatrix(); - glScalef(s, s, s); - glTranslatef (-t2, -t2, 0); - - glLineWidth (lw); - glBegin (GL_LINES); - for (y = 0; y <= tiles; y++) - { - glVertex3f (0, y, z); - glVertex3f (tiles, y, z); - /*mi->polygon_count++;*/ - } - for (x = 0; x <= tiles; x++) - { - glVertex3f (x, tiles, z); - glVertex3f (x, 0, z); - /*mi->polygon_count++;*/ - } - - glEnd(); - glPopMatrix(); -} - - -static void -draw_box (ModeInfo *mi) -{ - /* boing_configuration *bp = &bps[MI_SCREEN(mi)]; */ - glPushMatrix(); - glTranslatef (0, 0, -0.5); -/* glFrontFace (GL_CCW);*/ - draw_grid (mi); - glPopMatrix(); - - glPushMatrix(); - glRotatef (90, 1, 0, 0); - glTranslatef (0, 0, 0.5); -/* glFrontFace (GL_CW);*/ - draw_grid (mi); - glPopMatrix(); -} - - -static void -draw_ball (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - int wire = MI_IS_WIREFRAME(mi); - int x, y; - int xx = meridians; - int yy = parallels; - int scale = (smooth_p ? 5 : 1); - - if (lighting_p && !wire) - glEnable (GL_LIGHTING); - - if (parallels < 3) - scale *= 2; - - xx *= scale; - yy *= scale; - - glFrontFace (GL_CW); - - glPushMatrix(); - glTranslatef (bp->ball_x, bp->ball_y, bp->ball_z); - glScalef (ball_size, ball_size, ball_size); - glRotatef (-angle, 0, 0, 1); - glRotatef (bp->ball_th, 0, 1, 0); - - for (y = 0; y < yy; y++) - { - GLfloat thy0 = y * (M_PI * 2) / (yy * 2) + M_PI_2; - GLfloat thy1 = (y+1) * (M_PI * 2) / (yy * 2) + M_PI_2; - - for (x = 0; x < xx; x++) - { - GLfloat thx0 = x * (M_PI * 2) / xx; - GLfloat thx1 = (x+1) * (M_PI * 2) / xx; - XYZ p; - Bool bgp = ((x/scale) & 1) ^ ((y/scale) & 1); - - if (wire && bgp) continue; - - glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, - (bgp ? bp->ball_color2 : bp->ball_color1)); - glColor3fv (bgp ? bp->ball_color2 : bp->ball_color1); - - glBegin (wire ? GL_LINE_LOOP : GL_QUADS); - - if (!smooth_p) - { - p.x = cos((thy0+thy1)/2) * cos((thx0+thx1)/2); - p.y = sin((thy0+thy1)/2); - p.z = cos((thy0+thy1)/2) * sin((thx0+thx1)/2); - glNormal3f (-p.x, -p.y, -p.z); - } - - p.x = cos(thy0) * cos(thx0) / 2; - p.y = sin(thy0) / 2; - p.z = cos(thy0) * sin(thx0) / 2; - if (smooth_p) - glNormal3f (-p.x, -p.y, -p.z); - glVertex3f (p.x, p.y, p.z); - - p.x = cos(thy1) * cos(thx0) / 2; - p.y = sin(thy1) / 2; - p.z = cos(thy1) * sin(thx0) / 2; - if (smooth_p) - glNormal3f (-p.x, -p.y, -p.z); - glVertex3f (p.x, p.y, p.z); - - p.x = cos(thy1) * cos(thx1) / 2; - p.y = sin(thy1) / 2; - p.z = cos(thy1) * sin(thx1) / 2; - if (smooth_p) - glNormal3f (-p.x, -p.y, -p.z); - glVertex3f (p.x, p.y, p.z); - - p.x = cos(thy0) * cos(thx1) / 2; - p.y = sin(thy0) / 2; - p.z = cos(thy0) * sin(thx1) / 2; - if (smooth_p) - glNormal3f (-p.x, -p.y, -p.z); - glVertex3f (p.x, p.y, p.z); - - glEnd (); - mi->polygon_count++; - } - } - - glPopMatrix(); - - if (lighting_p && !wire) - glDisable(GL_LIGHTING); -} - - -static void -draw_shadow (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - int wire = MI_IS_WIREFRAME(mi); - GLfloat xoff = 0.14; - GLfloat yoff = 0.07; - int y; - int yy = parallels; - int scale = (smooth_p ? 5 : 1); - - if (lighting_p && !wire) - glEnable (GL_BLEND); - - if (parallels < 3) - scale *= 2; - - yy *= scale; - - glPushMatrix(); - glTranslatef (bp->ball_x + xoff, bp->ball_y + yoff, -0.49); - glScalef (ball_size, ball_size, ball_size); - glRotatef (-angle, 0, 0, 1); - - glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, bp->shadow_color); - glColor4fv (bp->shadow_color); - - glFrontFace (GL_CCW); - glNormal3f (0, 0, 1); - glBegin (wire ? GL_LINE_LOOP : GL_TRIANGLE_FAN); - if (!wire) glVertex3f (0, 0, 0); - - for (y = 0; y < yy*2+1; y++) - { - GLfloat thy0 = y * (M_PI * 2) / (yy * 2) + M_PI_2; - glVertex3f (cos(thy0) / 2, sin(thy0) / 2, 0); - mi->polygon_count++; - } - - glEnd (); - - glPopMatrix(); - - if (lighting_p && !wire) - glDisable (GL_BLEND); -} - - -static void -draw_scanlines (ModeInfo *mi) -{ - /* boing_configuration *bp = &bps[MI_SCREEN(mi)]; */ - int wire = MI_IS_WIREFRAME(mi); - int w = MI_WIDTH(mi); - int h = MI_HEIGHT(mi); - - if (h <= 300) return; - - if (!wire) - { - glEnable (GL_BLEND); - glDisable (GL_DEPTH_TEST); - } - - glMatrixMode(GL_PROJECTION); - glPushMatrix(); - { - glLoadIdentity(); - glMatrixMode(GL_MODELVIEW); - glPushMatrix(); - { - int lh, ls; - int y; - glLoadIdentity(); - glOrtho (0, w, 0, h, -1, 1); - - if (h > 500) lh = 4, ls = 4; - else if (h > 300) lh = 2, ls = 1; - else lh = 1, ls = 1; - - if (lh == 1) - glDisable (GL_BLEND); - - glLineWidth (lh); - glColor4f (0, 0, 0, 0.3); - - glBegin(GL_LINES); - for (y = 0; y < h; y += lh + ls) - { - glVertex3f (0, y, 0); - glVertex3f (w, y, 0); - } - glEnd(); - } - glPopMatrix(); - } - glMatrixMode(GL_PROJECTION); - glPopMatrix(); - glMatrixMode(GL_MODELVIEW); - - if (!wire) - { - glDisable (GL_BLEND); - glEnable (GL_DEPTH_TEST); - } -} - - - -static void -tick_physics (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - GLfloat s2 = ball_size / 2; - GLfloat max = 0.5 - s2; - GLfloat min = -max; - - bp->ball_th += bp->ball_dth; - while (bp->ball_th > 360) bp->ball_th -= 360; - while (bp->ball_th < 0) bp->ball_th += 360; - - bp->ball_dx += bp->ball_ddx; - bp->ball_x += bp->ball_dx; - if (bp->ball_x < min) bp->ball_x = min, bp->ball_dx = -bp->ball_dx, - bp->ball_dth = -bp->ball_dth, - bp->ball_dx += (frand(bp->speed/2) - bp->speed); - else if (bp->ball_x > max) bp->ball_x = max, bp->ball_dx = -bp->ball_dx, - bp->ball_dth = -bp->ball_dth, - bp->ball_dx += (frand(bp->speed/2) - bp->speed); - - bp->ball_dy += bp->ball_ddy; - bp->ball_y += bp->ball_dy; - if (bp->ball_y < min) bp->ball_y = min, bp->ball_dy = -bp->ball_dy; - else if (bp->ball_y > max) bp->ball_y = max, bp->ball_dy = -bp->ball_dy; - - bp->ball_dz += bp->ball_ddz; - bp->ball_z += bp->ball_dz; - if (bp->ball_z < min) bp->ball_z = min, bp->ball_dz = -bp->ball_dz; - else if (bp->ball_z > max) bp->ball_z = max, bp->ball_dz = -bp->ball_dz; -} - - - -/* Window management, etc - */ -ENTRYPOINT void -reshape_boing (ModeInfo *mi, int width, int height) -{ - GLfloat h = (GLfloat) height / (GLfloat) width; - int y = 0; - - h *= 4.0 / 3.0; /* Back in the caveman days we couldn't even afford - square pixels! */ - - if (width > height * 5) { /* tiny window: show middle */ - height = width * 3/4; - y = -height/2; - h = height / (GLfloat) width; - } - - glViewport (0, y, (GLint) width, (GLint) height); - - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - - if (height > width) - { - GLfloat s = width / (GLfloat) height; - glScalef (s, s, s); - } - - gluPerspective (8.0, 1/h, 1.0, 10.0); - - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); - gluLookAt (0.0, 0.0, 8.0, - 0.0, 0.0, 0.0, - 0.0, 1.0, 0.0); - - glClear(GL_COLOR_BUFFER_BIT); -} - - -ENTRYPOINT Bool -boing_handle_event (ModeInfo *mi, XEvent *event) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - - if (gltrackball_event_handler (event, bp->trackball, - MI_WIDTH (mi), MI_HEIGHT (mi), - &bp->button_down_p)) - return True; - - return False; -} - - -ENTRYPOINT void -init_boing (ModeInfo *mi) -{ - boing_configuration *bp; - int wire = MI_IS_WIREFRAME(mi); - - MI_INIT (mi, bps); - - bp = &bps[MI_SCREEN(mi)]; - - bp->glx_context = init_GL(mi); - - if (tiles < 1) tiles = 1; - - if (smooth_p) - { - if (meridians < 1) meridians = 1; - if (parallels < 1) parallels = 1; - } - else - { - if (meridians < 3) meridians = 3; - if (parallels < 2) parallels = 2; - } - - if (meridians > 1 && meridians & 1) meridians++; /* odd numbers look bad */ - - - if (thickness <= 0) thickness = 0.001; - else if (thickness > 1) thickness = 1; - - reshape_boing (mi, MI_WIDTH(mi), MI_HEIGHT(mi)); - - parse_color (mi, "ballColor1", ball_color1_str, bp->ball_color1); - parse_color (mi, "ballColor2", ball_color2_str, bp->ball_color2); - parse_color (mi, "gridColor", grid_color_str, bp->grid_color); - parse_color (mi, "shadowColor", shadow_str, bp->shadow_color); - parse_color (mi, "background", bg_str, bp->bg_color); - - bp->shadow_color[3] = 0.9; - - glClearColor (bp->bg_color[0], bp->bg_color[1], bp->bg_color[2], 1); - - if (!wire) - { - glEnable(GL_DEPTH_TEST); - glEnable(GL_CULL_FACE); - } - - bp->lightpos[0] = 0.5; - bp->lightpos[1] = 0.5; - bp->lightpos[2] = -1; - bp->lightpos[3] = 0; - - if (lighting_p && !wire) - { - GLfloat amb[4] = {0, 0, 0, 1}; - GLfloat dif[4] = {1, 1, 1, 1}; - GLfloat spc[4] = {1, 1, 1, 1}; - glEnable(GL_LIGHT0); - glLightfv(GL_LIGHT0, GL_AMBIENT, amb); - glLightfv(GL_LIGHT0, GL_DIFFUSE, dif); - glLightfv(GL_LIGHT0, GL_SPECULAR, spc); - } - - glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - - bp->speed = speed / 800.0; - - bp->ball_dth = (spin ? -bp->speed * 7 * 360 : 0); - - bp->ball_x = 0.5 - ((ball_size/2) + frand(1-ball_size)); - bp->ball_y = 0.2; - bp->ball_dx = bp->speed * 6 + frand(bp->speed); - bp->ball_ddy = -bp->speed; - - bp->ball_dz = bp->speed * 6 + frand(bp->speed); - - bp->trackball = gltrackball_init (False); -} - - -ENTRYPOINT void -draw_boing (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - Display *dpy = MI_DISPLAY(mi); - Window window = MI_WINDOW(mi); - - if (!bp->glx_context) - return; - - glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context); - - mi->polygon_count = 0; - - glShadeModel(GL_SMOOTH); - - glEnable(GL_NORMALIZE); - - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - if (! bp->button_down_p) - tick_physics (mi); - - glPushMatrix (); - - { - double rot = current_device_rotation(); - glRotatef(rot, 0, 0, 1); -/* - if ((rot > 45 && rot < 135) || - (rot < -45 && rot > -135)) - { - GLfloat s = MI_WIDTH(mi) / (GLfloat) MI_HEIGHT(mi); - glScalef (1/s, s, 1); - } -*/ - } - - gltrackball_rotate (bp->trackball); - - glLightfv (GL_LIGHT0, GL_POSITION, bp->lightpos); - - glDisable (GL_CULL_FACE); - glDisable (GL_DEPTH_TEST); - - glEnable (GL_LINE_SMOOTH); - glHint (GL_LINE_SMOOTH_HINT, GL_NICEST); - glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); - glEnable (GL_BLEND); - - draw_box (mi); - draw_shadow (mi); - - glEnable (GL_CULL_FACE); - glEnable (GL_DEPTH_TEST); - - draw_ball (mi); - if (scanlines_p) - draw_scanlines (mi); - - glPopMatrix (); - - if (mi->fps_p) do_fps (mi); - glFinish(); - - glXSwapBuffers(dpy, window); -} - - -ENTRYPOINT void -free_boing (ModeInfo *mi) -{ - boing_configuration *bp = &bps[MI_SCREEN(mi)]; - if (!bp->glx_context) return; - glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context); - if (bp->trackball) gltrackball_free (bp->trackball); -} - -XSCREENSAVER_MODULE ("Boing", boing) - -#endif /* USE_GL */ |