X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Fglx%2Fsierpinski3d.c;h=92781504720ccf82ba622a7ec85233fa625ff11c;hp=dace838601b7f783a061f62dbacc70a1f6641a70;hb=ffd8c0873576a9e3065696a624dce6b766b77062;hpb=8eb2873d7054e705c4e83f22d18c40946a9e2529 diff --git a/hacks/glx/sierpinski3d.c b/hacks/glx/sierpinski3d.c index dace8386..92781504 100644 --- a/hacks/glx/sierpinski3d.c +++ b/hacks/glx/sierpinski3d.c @@ -1,9 +1,8 @@ /* -*- Mode: C; tab-width: 4 -*- */ /* Sierpinski3D --- 3D sierpinski gasket */ -#if !defined( lint ) && !defined( SABER ) +#if 0 static const char sccsid[] = "@(#)sierpinski3D.c 00.01 99/11/04 xlockmore"; - #endif /*- @@ -27,24 +26,29 @@ static const char sccsid[] = "@(#)sierpinski3D.c 00.01 99/11/04 xlockmore"; * random scattering of points. */ -/*- - * due to a Bug/feature in VMS X11/Intrinsic.h has to be placed before xlock. - * otherwise caddr_t is not defined correctly - */ - -#include - #ifdef STANDALONE # define PROGCLASS "Sierpinski3D" # define HACK_INIT init_gasket # define HACK_DRAW draw_gasket # define HACK_RESHAPE reshape_gasket +# define HACK_HANDLE_EVENT gasket_handle_event +# define EVENT_MASK PointerMotionMask # define gasket_opts xlockmore_opts + + +#define DEF_SPIN "True" +#define DEF_WANDER "True" +#define DEF_SPEED "150" +#define DEF_MAXDEPTH "5" + # define DEFAULTS "*delay: 20000 \n" \ - "*maxDepth: 5 \n" \ - "*speed: 150 \n" \ "*showFPS: False \n" \ - "*wireframe: False \n" + "*wireframe: False \n" \ + "*maxDepth: " DEF_MAXDEPTH "\n" \ + "*speed: " DEF_SPEED "\n" \ + "*spin: " DEF_SPIN "\n" \ + "*wander: " DEF_WANDER "\n" \ + # include "xlockmore.h" /* from the xscreensaver distribution */ #else /* !STANDALONE */ # include "xlock.h" /* from the xlockmore distribution */ @@ -52,19 +56,32 @@ static const char sccsid[] = "@(#)sierpinski3D.c 00.01 99/11/04 xlockmore"; #ifdef USE_GL +#include +#include "rotator.h" +#include "gltrackball.h" + #undef countof #define countof(x) (sizeof((x))/sizeof((*x))) static int max_depth; static int speed; +static Bool do_spin; +static Bool do_wander; + static XrmOptionDescRec opts[] = { - {"-depth", ".sierpinski3d.maxDepth", XrmoptionSepArg, (caddr_t) 0 }, - {"-speed", ".sierpinski3d.speed", XrmoptionSepArg, (caddr_t) 0 } + {"-depth", ".sierpinski3d.maxDepth", XrmoptionSepArg, 0 }, + {"-speed", ".sierpinski3d.speed", XrmoptionSepArg, 0 }, + { "-spin", ".spin", XrmoptionNoArg, "True" }, + { "+spin", ".spin", XrmoptionNoArg, "False" }, + { "-wander", ".wander", XrmoptionNoArg, "True" }, + { "+wander", ".wander", XrmoptionNoArg, "False" }, }; static argtype vars[] = { - {(caddr_t *) &max_depth, "maxDepth", "MaxDepth", "5", t_Int}, - {(caddr_t *) &speed, "speed", "Speed", "150", t_Int}, + {&do_spin, "spin", "Spin", DEF_SPIN, t_Bool}, + {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool}, + {&speed, "speed", "Speed", DEF_SPEED, t_Int}, + {&max_depth, "maxDepth", "MaxDepth", DEF_MAXDEPTH, t_Int}, }; @@ -86,15 +103,12 @@ typedef struct{ } GL_VECTOR; typedef struct { - GLfloat rotx, roty, rotz; /* current object rotation */ - GLfloat dx, dy, dz; /* current rotational velocity */ - GLfloat ddx, ddy, ddz; /* current rotational acceleration */ - GLfloat d_max; /* max velocity */ - - GLfloat angle; GLuint gasket0, gasket1, gasket2, gasket3; GLXContext *glx_context; Window window; + rotator *rot; + trackball_state *trackball; + Bool button_down_p; int current_depth; @@ -109,8 +123,6 @@ typedef struct { static gasketstruct *gasket = NULL; -#include - static GLfloat normals[4][3]; @@ -132,10 +144,12 @@ triangle (GLfloat x1, GLfloat y1, GLfloat z1, } static void -four_tetras (GL_VECTOR *outer, Bool wireframe_p, int countdown, int which) +four_tetras (GL_VECTOR *outer, Bool wireframe_p, int countdown, int which, + int *countP) { if (countdown <= 0) { + (*countP)++; if (which == 0) { glNormal3f (normals[0][0], normals[0][1], normals[0][2]); @@ -210,25 +224,25 @@ four_tetras (GL_VECTOR *outer, Bool wireframe_p, int countdown, int which) corner[1] = inner[M01]; corner[2] = inner[M02]; corner[3] = inner[M03]; - four_tetras (corner, wireframe_p, countdown, which); + four_tetras (corner, wireframe_p, countdown, which, countP); corner[0] = inner[M01]; corner[1] = outer[1]; corner[2] = inner[M12]; corner[3] = inner[M13]; - four_tetras (corner, wireframe_p, countdown, which); + four_tetras (corner, wireframe_p, countdown, which, countP); corner[0] = inner[M02]; corner[1] = inner[M12]; corner[2] = outer[2]; corner[3] = inner[M23]; - four_tetras (corner, wireframe_p, countdown, which); + four_tetras (corner, wireframe_p, countdown, which, countP); corner[0] = inner[M03]; corner[1] = inner[M13]; corner[2] = inner[M23]; corner[3] = outer[3]; - four_tetras (corner, wireframe_p, countdown, which); + four_tetras (corner, wireframe_p, countdown, which, countP); } } @@ -238,6 +252,7 @@ compile_gasket(ModeInfo *mi, int which) { Bool wireframe_p = MI_IS_WIREFRAME(mi); gasketstruct *gp = &gasket[MI_SCREEN(mi)]; + int count; GL_VECTOR vertex[5]; @@ -279,10 +294,13 @@ compile_gasket(ModeInfo *mi, int which) vertex[4].y = 0.0; vertex[4].z = 0.0; + count = 0; four_tetras (vertex, wireframe_p, (gp->current_depth < 0 ? -gp->current_depth : gp->current_depth), - which); + which, + &count); + mi->polygon_count = count; } static void @@ -345,26 +363,18 @@ draw(ModeInfo *mi) glPushMatrix(); { - static int frame = 0; - GLfloat x, y, z; - -# define SINOID(SCALE,SIZE) \ - ((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2) - x = SINOID(0.0071, 8.0); - y = SINOID(0.0053, 6.0); - z = SINOID(0.0037, 15.0); - frame++; - glTranslatef(x, y, z); - - x = gp->rotx; - y = gp->roty; - z = gp->rotz; - if (x < 0) x = 1 - (x + 1); - if (y < 0) y = 1 - (y + 1); - if (z < 0) z = 1 - (z + 1); - 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); + double x, y, z; + get_position (gp->rot, &x, &y, &z, !gp->button_down_p); + glTranslatef((x - 0.5) * 10, + (y - 0.5) * 10, + (z - 0.5) * 20); + + gltrackball_rotate (gp->trackball); + + get_rotation (gp->rot, &x, &y, &z, !gp->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( 8.0, 8.0, 8.0 ); @@ -397,6 +407,8 @@ draw(ModeInfo *mi) glDeleteLists (gp->gasket1, 1); glDeleteLists (gp->gasket2, 1); glDeleteLists (gp->gasket3, 1); + + mi->polygon_count = 0; glNewList (gp->gasket0, GL_COMPILE); compile_gasket (mi, 0); glEndList(); glNewList (gp->gasket1, GL_COMPILE); compile_gasket (mi, 1); glEndList(); glNewList (gp->gasket2, GL_COMPILE); compile_gasket (mi, 2); glEndList(); @@ -415,14 +427,13 @@ reshape_gasket(ModeInfo *mi, int width, int height) glViewport(0, 0, (GLint) width, (GLint) height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); + gluPerspective (30.0, 1/h, 1.0, 100.0); - gluPerspective( 30.0, 1/h, 1.0, 100.0 ); - gluLookAt( 0.0, 0.0, 15.0, - 0.0, 0.0, 0.0, - 0.0, 1.0, 0.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); - glTranslatef(0.0, 0.0, -15.0); + gluLookAt( 0.0, 0.0, 30.0, + 0.0, 0.0, 0.0, + 0.0, 1.0, 0.0); glClear(GL_COLOR_BUFFER_BIT); } @@ -441,75 +452,36 @@ pinit(ModeInfo *mi) } - -/* lifted from lament.c */ -#define RAND(n) ((long) ((random() & 0x7fffffff) % ((long) (n)))) -#define RANDSIGN() ((random() & 1) ? 1 : -1) - -static void -rotate(GLfloat *pos, GLfloat *v, GLfloat *dv, GLfloat max_v) +Bool +gasket_handle_event (ModeInfo *mi, XEvent *event) { - double ppos = *pos; - - /* tick position */ - if (ppos < 0) - ppos = -(ppos + *v); - else - ppos += *v; - - if (ppos > 1.0) - ppos -= 1.0; - else if (ppos < 0) - ppos += 1.0; - - if (ppos < 0) abort(); - if (ppos > 1.0) abort(); - *pos = (*pos > 0 ? ppos : -ppos); - - /* accelerate */ - *v += *dv; + gasketstruct *gp = &gasket[MI_SCREEN(mi)]; - /* clamp velocity */ - if (*v > max_v || *v < -max_v) + if (event->xany.type == ButtonPress && + event->xbutton.button & Button1) { - *dv = -*dv; + gp->button_down_p = True; + gltrackball_start (gp->trackball, + event->xbutton.x, event->xbutton.y, + MI_WIDTH (mi), MI_HEIGHT (mi)); + return True; } - /* If it stops, start it going in the other direction. */ - else if (*v < 0) + else if (event->xany.type == ButtonRelease && + event->xbutton.button & Button1) { - if (random() % 4) - { - *v = 0; - - /* keep going in the same direction */ - if (random() % 2) - *dv = 0; - else if (*dv < 0) - *dv = -*dv; - } - else - { - /* reverse gears */ - *v = -*v; - *dv = -*dv; - *pos = -*pos; - } + gp->button_down_p = False; + return True; } - - /* Alter direction of rotational acceleration randomly. */ - if (! (random() % 120)) - *dv = -*dv; - - /* Change acceleration very occasionally. */ - if (! (random() % 200)) + else if (event->xany.type == MotionNotify && + gp->button_down_p) { - if (*dv == 0) - *dv = 0.00001; - else if (random() & 1) - *dv *= 1.2; - else - *dv *= 0.8; + gltrackball_track (gp->trackball, + event->xmotion.x, event->xmotion.y, + MI_WIDTH (mi), MI_HEIGHT (mi)); + return True; } + + return False; } @@ -529,20 +501,17 @@ init_gasket(ModeInfo *mi) gp->window = MI_WINDOW(mi); - gp->rotx = frand(1.0) * RANDSIGN(); - gp->roty = frand(1.0) * RANDSIGN(); - gp->rotz = frand(1.0) * RANDSIGN(); - - /* bell curve from 0-1.5 degrees, avg 0.75 */ - gp->dx = (frand(1) + frand(1) + frand(1)) / (360*2); - gp->dy = (frand(1) + frand(1) + frand(1)) / (360*2); - gp->dz = (frand(1) + frand(1) + frand(1)) / (360*2); - - gp->d_max = gp->dx * 2; - - gp->ddx = 0.00006 + frand(0.00003); - gp->ddy = 0.00006 + frand(0.00003); - gp->ddz = 0.00006 + frand(0.00003); + { + double spin_speed = 1.0; + double wander_speed = 0.03; + gp->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); + gp->trackball = gltrackball_init (); + } gp->ncolors = 255; gp->colors = (XColor *) calloc(gp->ncolors, sizeof(XColor)); @@ -571,7 +540,6 @@ draw_gasket(ModeInfo * mi) gasketstruct *gp = &gasket[MI_SCREEN(mi)]; Display *display = MI_DISPLAY(mi); Window window = MI_WINDOW(mi); - int angle_incr = 1; if (!gp->glx_context) return; @@ -582,14 +550,6 @@ draw_gasket(ModeInfo * mi) glXMakeCurrent(display, window, *(gp->glx_context)); draw(mi); - - /* rotate */ - gp->angle = (int) (gp->angle + angle_incr) % 360; - - rotate(&gp->rotx, &gp->dx, &gp->ddx, gp->d_max); - rotate(&gp->roty, &gp->dy, &gp->ddy, gp->d_max); - rotate(&gp->rotz, &gp->dz, &gp->ddz, gp->d_max); - if (mi->fps_p) do_fps (mi); glFinish(); glXSwapBuffers(display, window);