X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Fglx%2Fdnalogo.c;h=1cf6929c046f1049a33484eb6cb1201daf7c65b2;hb=aa75c7476aeaa84cf3abc192b376a8b03c325213;hp=ec58540c37813726ab35cf1c1b09bb13808a62f1;hpb=5f9c47ca98dd43d8f59b7c27d3fde6edfde4fe21;p=xscreensaver diff --git a/hacks/glx/dnalogo.c b/hacks/glx/dnalogo.c index ec58540c..1cf6929c 100644 --- a/hacks/glx/dnalogo.c +++ b/hacks/glx/dnalogo.c @@ -1,4 +1,4 @@ -/* DNA Logo, Copyright (c) 2001-2011 Jamie Zawinski +/* DNA Logo, Copyright (c) 2001-2016 Jamie Zawinski * * DNA Lounge * @@ -8,7 +8,7 @@ * San Francisco, CA * 94103 * - * http://www.dnalounge.com/ + * https://www.dnalounge.com/ * http://www.dnapizza.com/ * * Permission to use, copy, modify, distribute, and sell this software and its @@ -45,16 +45,35 @@ "*frameDepth: 0.01 \n" \ "*frameThickness: 0.03 \n" \ "*triangleSize: 0.045 \n" \ + "*cwFacets: 3 \n" \ + "*cwDiscFacets: 64 \n" \ + "*cwSpread: 0.5 \n" \ + "*cwLineWidth: 0.18 \n" \ + "*cwThickness: 0.15 \n" \ + "*cwCapSize: 0.4 \n" \ + "*text: CODEWORD\n" \ "*speed: 1.0 \n" \ - "*pizza: False \n" \ - ".foreground: #00AA00 \n" \ + "*mode: both" "\n" \ + ".background: #000000\n" \ + ".foreground: #00AA00\n" \ + ".cwForeground: #FCA816\n" \ + ".cwBackground: #943225\n" \ + "*cwFont: " CWFONT "\n" \ "*geometry: =640x640\n" \ +# if defined(HAVE_COCOA) || defined(HAVE_ANDROID) +# define CWFONT "Yearling 28, OCR A Std 24" +# else +# define CWFONT "-*-helvetica-medium-r-normal-*-*-240-*-*-*-*-*-*" +# endif + # define refresh_logo 0 # define release_logo 0 #undef countof #define countof(x) (sizeof((x))/sizeof((*x))) +#undef DXF_OUTPUT_HACK + #ifdef DXF_OUTPUT_HACK /* When this is defined, instead of rendering to the screen, we write a DXF CAD file to stdout. This is a kludge of shocking magnitude... @@ -70,16 +89,34 @@ #include "xlockmore.h" #include "normals.h" #include "tube.h" +#include "sphere.h" #include "rotator.h" #include "gltrackball.h" +#include "utf8wc.h" +#include "texfont.h" #ifdef USE_GL /* whole file */ +#ifdef HAVE_JWZGLES +# include "dnapizza.h" +#else +# define HAVE_TESS +#endif + +typedef enum { + HELIX_IN, HELIX, HELIX_OUT, + PIZZA_IN, PIZZA, PIZZA_OUT, + HELIX_AND_PIZZA, + CODEWORD_IN, CODEWORD, CODEWORD_OUT, CODEWORD_BLANK +} glyph_mode; + typedef struct { Bool spinning_p; - GLfloat position; /* 0.0 - 1.0 */ - GLfloat speed; /* how far along the path (may be negative) */ - GLfloat probability; /* relative likelyhood to start spinning */ + GLfloat position; /* 0.0 - 1.0 */ + GLfloat position_eased; /* 0.0 - 1.0, eased in and out */ + GLfloat easement; /* portion of path that is eased. <= 0.5 */ + GLfloat speed; /* how far along the path (may be negative) */ + GLfloat probability; /* relative likelyhood to start spinning */ } spinner; typedef struct { @@ -113,12 +150,29 @@ typedef struct { GLfloat frame_thickness; GLfloat triangle_size; + int codeword_facets, codeword_disc_facets; + GLfloat codeword_spread, codeword_line_width, codeword_thickness; + GLfloat codeword_cap_size; + const char *codeword_text; + char *codeword_text_out; + int *codeword_text_points; + XYZ *codeword_path; + int codeword_path_npoints; + int codeword_nguides; + XYZ *codeword_guides; + GLfloat codeword_color[4], codeword_bg[4]; + texture_font_data *font; + GLfloat speed; - Bool pizza_p; + glyph_mode mode; + glyph_mode anim_state; + GLfloat anim_ratio; spinner gasket_spinnerx, gasket_spinnery, gasket_spinnerz; - spinner scene_spinnerx, scene_spinnery; - spinner helix_spinnery, helix_spinnerz; + spinner scene_spinnerx, scene_spinnery; /* for DNA */ + rotator *scene_rot; /* for Codeword */ + spinner helix_spinnerz; + spinner pizza_spinnery, pizza_spinnerz; spinner frame_spinner; trackball_state *trackball; @@ -131,8 +185,14 @@ typedef struct { static logo_configuration *dcs = NULL; static XrmOptionDescRec opts[] = { - { "-speed", ".speed", XrmoptionSepArg, 0 }, - { "-pizza", ".pizza", XrmoptionNoArg, "True" }, + { "-speed", ".speed", XrmoptionSepArg, 0 }, + { "-mode", ".mode", XrmoptionSepArg, 0 }, + { "-pizza", ".mode", XrmoptionNoArg, "pizza" }, + { "-helix", ".mode", XrmoptionNoArg, "helix" }, + { "-both", ".mode", XrmoptionNoArg, "both" }, + { "-codeword", ".mode", XrmoptionNoArg, "codeword" }, + { "-cw", ".mode", XrmoptionNoArg, "codeword" }, + { "-text", ".text", XrmoptionSepArg, 0 }, }; ENTRYPOINT ModeSpecOpt logo_opts = {countof(opts), opts, 0, NULL, NULL}; @@ -399,15 +459,20 @@ dxf_glDrawArrays (GLenum mode, GLint first, GLsizei count) } -# define XYZ tube_XYZ /* avoid conflict with normals.h */ -# include "tube.c" /* Yes, I really am including a C file. */ +# define XYZ tube_XYZ /* avoid conflict with normals.h */ +# include "tube.c" /* Yes, I really am including a C file. */ +# undef XYZ +# define XYZ sphere_XYZ +# define unit_sphere unit_sphere_dxf +# define unit_dome unit_dome_dxf +# include "sphere.c" # undef XYZ #endif /* DXF_OUTPUT_HACK */ -/* Calculate the angle (in degrees) between two vectors. +/* Calculate the angle (in radians) between two vectors. */ static GLfloat vector_angle (double ax, double ay, double az, @@ -433,7 +498,30 @@ vector_angle (double ax, double ay, double az, if (cc > 1) cc = 1; /* avoid fp rounding error (1.000001 => sqrt error) */ angle = acos (cc); - return (angle * M_PI / 180); + return (angle); +} + +static void +normalize (XYZ *p) +{ + GLfloat d = sqrt (p->x*p->x + p->y*p->y + p->z*p->z); + if (d != 0) + { + p->x /= d; + p->y /= d; + p->z /= d; + } + else + { + p->x = p->y = p->z = 0; + } +} + + +static double +dot (const XYZ u, const XYZ v) +{ + return (u.x * v.x) + (u.y * v.y) + (u.z * v.z); } @@ -929,7 +1017,7 @@ make_gasket (logo_configuration *dc, int wire) GLfloat anglea = vector_angle (nx, ny, 0, nxa, nya, 0); GLfloat anglez = vector_angle (nx, ny, 0, nxz, nyz, 0); - GLfloat pointy = 0.005; + GLfloat pointy = 0.6; if (anglea > pointy) { @@ -1361,6 +1449,8 @@ make_frame (logo_configuration *dc, int wire) /* Make some pizza. */ +#ifdef HAVE_TESS + typedef struct { GLdouble *points; int i; @@ -1387,6 +1477,7 @@ tess_combine_cb (GLdouble coords[3], GLdouble *d[4], GLfloat w[4], } +#if 0 static void tess_vertex_cb (void *vertex_data, void *closure) { @@ -1396,6 +1487,7 @@ tess_vertex_cb (void *vertex_data, void *closure) to->points[to->i++] = v[1]; to->points[to->i++] = v[2]; } +#endif static void tess_begin_cb (GLenum which) @@ -1409,12 +1501,13 @@ tess_end_cb (void) glEnd(); } +#endif /* HAVE_TESS */ + static int make_pizza (logo_configuration *dc, int facetted, int wire) { int polys = 0; - int topfaces = (facetted ? 48 : 120); int discfaces = (facetted ? 12 : 120); int npoints = topfaces * 2 + 100; @@ -1426,18 +1519,18 @@ make_pizza (logo_configuration *dc, int facetted, int wire) GLfloat thick2 = (dc->gasket_thickness / dc->gasket_size) / 4; GLfloat th, x, y, s; int i, j, k; + int endpoints; + +# ifdef HAVE_TESS tess_out TO, *to = &TO; GLUtesselator *tess = gluNewTess(); - int endpoints; - int endedge1; to->points = (GLdouble *) calloc (topfaces * 20, sizeof(GLdouble)); to->i = 0; - -# ifndef _GLUfuncptr -# define _GLUfuncptr void(*)(void) -# endif +# ifndef _GLUfuncptr +# define _GLUfuncptr void(*)(void) +# endif gluTessCallback(tess,GLU_TESS_BEGIN, (_GLUfuncptr)tess_begin_cb); gluTessCallback(tess,GLU_TESS_VERTEX, (_GLUfuncptr)glVertex3dv); @@ -1448,6 +1541,8 @@ make_pizza (logo_configuration *dc, int facetted, int wire) gluTessProperty (tess, GLU_TESS_BOUNDARY_ONLY, wire); gluTessProperty (tess,GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD); +# endif /* HAVE_TESS */ + glPushMatrix(); s = 1.9; @@ -1476,7 +1571,6 @@ make_pizza (logo_configuration *dc, int facetted, int wire) points[j++] = edge[i*2]; points[j++] = 0; } - endedge1 = i; } s = 0.798; /* radius of end of slice, before crust gap */ @@ -1532,6 +1626,7 @@ make_pizza (logo_configuration *dc, int facetted, int wire) y = p[1]; polys++; } + do_normal (points[0], points[1], -thick2, points[0], points[1], thick2, x, y, thick2); @@ -1542,6 +1637,21 @@ make_pizza (logo_configuration *dc, int facetted, int wire) polys++; glEnd(); +# ifndef HAVE_TESS + if (wire) + { + /* Outline of slice */ + glBegin (GL_LINE_LOOP); + for (i = 0; i < endpoints; i++) + glVertex3f (points[i*3], points[i*3+1], -thick2); + glEnd(); + glBegin (GL_LINE_LOOP); + for (i = 0; i < endpoints; i++) + glVertex3f (points[i*3], points[i*3+1], thick2); + glEnd(); + } +# endif /* HAVE_TESS */ + /* Compute the holes */ step = M_PI * 2 / discfaces; for (k = 0; k < nholes; k++) @@ -1569,6 +1679,7 @@ make_pizza (logo_configuration *dc, int facetted, int wire) for (k = 0; k < nholes; k++) { GLdouble *p = holes + (discfaces * 3 * k); + glBegin (wire ? GL_LINES : GL_QUAD_STRIP); for (i = 0; i < discfaces; i++) { @@ -1585,8 +1696,23 @@ make_pizza (logo_configuration *dc, int facetted, int wire) glVertex3f (p[0], p[1], thick2); polys++; glEnd(); +# ifndef HAVE_TESS + if (wire) + { + /* Outline of holes */ + glBegin (GL_LINE_LOOP); + for (i = 0; i < discfaces; i++) + glVertex3f (p[i*3], p[i*3+1], -thick2); + glEnd(); + glBegin (GL_LINE_LOOP); + for (i = 0; i < discfaces; i++) + glVertex3f (p[i*3], p[i*3+1], thick2); + glEnd(); + } +# endif /* !HAVE_TESS */ } +# ifdef HAVE_TESS glTranslatef (0, 0, -thick2); for (y = 0; y <= 1; y++) { @@ -1626,8 +1752,50 @@ make_pizza (logo_configuration *dc, int facetted, int wire) gluTessEndPolygon (tess); } + glTranslatef (0, 0, -thick2); +# else /* !HAVE_TESS */ + if (! wire) + { + glTranslatef(0, 0, thick2); + glNormal3f (0, 0, 1); + glFrontFace (GL_CW); + + /* Sadly, jwzgl's glVertexPointer seems not to be recordable inside + display lists. */ +# if 0 + glDisableClientState (GL_COLOR_ARRAY); + glDisableClientState (GL_NORMAL_ARRAY); + glDisableClientState (GL_TEXTURE_COORD_ARRAY); + glEnableClientState (GL_VERTEX_ARRAY); + glVertexPointer (3, GL_FLOAT, 0, dnapizza_triangles); + glDrawArrays (GL_TRIANGLES, 0, countof (dnapizza_triangles) / 3); +# else + glBegin (GL_TRIANGLES); + for (i = 0; i < countof (dnapizza_triangles); i += 3) + glVertex3fv (dnapizza_triangles + i); + glEnd(); +# endif + + glTranslatef(0, 0, -thick2*2); + glNormal3f (0, 0, -1); + glFrontFace (GL_CCW); + +# if 0 + glDrawArrays (GL_TRIANGLES, 0, countof (dnapizza_triangles) / 3); +# else + int i; + glBegin (GL_TRIANGLES); + for (i = 0; i < countof (dnapizza_triangles); i += 3) + glVertex3fv (dnapizza_triangles + i); + glEnd(); +# endif + + glTranslatef(0, 0, thick2); + } +# endif /* !HAVE_TESS */ + /* Compute the crust */ @@ -1734,10 +1902,13 @@ make_pizza (logo_configuration *dc, int facetted, int wire) glEnd(); } +# ifdef HAVE_TESS gluDeleteTess (tess); + free (to->points); +# endif /* HAVE_TESS */ + free (points); free (holes); - free (to->points); glPopMatrix(); @@ -1745,196 +1916,1110 @@ make_pizza (logo_configuration *dc, int facetted, int wire) } - - -/* Window management, etc +/* Upcase string, convert Unicrud to ASCII, remove any non-letters. */ -ENTRYPOINT void -reshape_logo (ModeInfo *mi, int width, int height) +static char * +codeword_simplify_text (const char *s0) { - GLfloat h = (GLfloat) height / (GLfloat) width; - - glViewport (0, 0, (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); - - glClear(GL_COLOR_BUFFER_BIT); + char *s1 = utf8_to_latin1 ((s0 ? s0 : ""), True); + int L = strlen(s1); + char *s2 = (char *) malloc (L + 10); + char *s3 = s2; + int i; + for (i = 0; i < L; i++) + { + char c = s1[i]; + if (c >= 'a' && c <= 'z') + c -= 'a'-'A'; + if (c >= 'A' && c <= 'Z') + *s3++ = c; + } + *s3 = 0; + if (! *s2) + strcpy (s2, "CODEWORD"); + return s2; } static void -gl_init (ModeInfo *mi) +make_codeword_path (ModeInfo *mi) { -/* logo_configuration *dc = &dcs[MI_SCREEN(mi)]; */ - int wire = MI_IS_WIREFRAME(mi); - - GLfloat position[] = {0, 0, 0, 0}; - GLfloat direction[] = {3, -1, -3}; + logo_configuration *dc = &dcs[MI_SCREEN(mi)]; + int letters = strlen (dc->codeword_text); - position[0] = -direction[0]; - position[1] = -direction[1]; - position[2] = -direction[2]; + GLfloat rtick = dc->codeword_spread; + GLfloat iradius = rtick * dc->codeword_cap_size; - if (!wire) - { - glLightfv(GL_LIGHT0, GL_POSITION, position); - glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, direction); - glShadeModel(GL_SMOOTH); - glEnable(GL_NORMALIZE); - glEnable(GL_CULL_FACE); - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_DEPTH_TEST); - } -} + int dial = 0; + int letter; + GLfloat last_r = 0; + GLfloat inner_circum = M_PI * 2 * (iradius + rtick * 2); + GLfloat outer_circum = M_PI * 2 * (iradius + rtick * (letters + 1)); + GLfloat facet_length = inner_circum / (26 * dc->codeword_facets); + int outer_facets = ceil (outer_circum / facet_length); -ENTRYPOINT void -init_logo (ModeInfo *mi) -{ - logo_configuration *dc; - int do_gasket = get_boolean_resource(mi->dpy, "doGasket", "Boolean"); - int do_helix = get_boolean_resource(mi->dpy, "doHelix", "Boolean"); - int do_ladder = (do_helix && - get_boolean_resource(mi->dpy, "doLadder", "Boolean")); - int do_frame = get_boolean_resource(mi->dpy, "doFrame", "Boolean"); - GLfloat helix_rot = 147.0; + int *histo = (int *) calloc (letters * 26, sizeof(*histo)); + XYZ *points = (XYZ *) calloc (letters * outer_facets, sizeof (*points)); + int npoints = 0; - if (!do_gasket && !do_helix) + for (letter = -1; letter < letters; letter++) { - fprintf (stderr, "%s: no helix or gasket?\n", progname); - exit (1); - } + if (letter == -1) /* Inner starting point */ + { + points[npoints].x = iradius; + points[npoints].y = 0; + last_r = iradius; + npoints++; + } + else /* Add arc for this letter */ + { + int direction = (letter & 1 ? -1 : 1); + int v = (dc->codeword_text[letter] - 'A' + 1); + int dial1 = dial + v * direction; + + GLfloat th; + GLfloat th0 = M_PI * 2 / 26 * dial; + GLfloat th1 = M_PI * 2 / 26 * dial1; + GLfloat r = iradius + rtick * (letter + 2); + GLfloat circum = M_PI * 2 * r; + GLfloat arc_length = circum * v / 26; + int arc_facets = ceil (fabs (arc_length / facet_length)); + GLfloat facet_th = (th1 - th0) / arc_facets; + + if (arc_facets > outer_facets) abort(); + + /* Let's put some intermediate facets on the crossbars too, + so that the animation doesn't speed up on those. */ + { + GLfloat rr; + for (rr = last_r + facet_length; + rr <= r - facet_length; + rr += facet_length) + { + points[npoints].x = rr * cos (th0); + points[npoints].y = rr * sin (th0); + npoints++; + } + last_r = r; + } - if (!dcs) { - dcs = (logo_configuration *) - calloc (MI_NUM_SCREENS(mi), sizeof (logo_configuration)); - if (!dcs) { - fprintf(stderr, "%s: out of memory\n", progname); - exit(1); - } - } - dc = &dcs[MI_SCREEN(mi)]; + for (th = th0; + (th0 < th1 + ? th <= th1 + facet_th + : th >= th1 + facet_th); + th += facet_th) + { + GLfloat th2 = th; + if (th0 < th1 && th > th1) + th2 = th1; + if (th0 > th1 && th < th1) + th2 = th1; + points[npoints].x = r * cos (th2); + points[npoints].y = r * sin (th2); + + /* Ugh, add point only if it differs from prev. + Not sure how this happens. */ + if (npoints == 0 || + points[npoints-1].x != points[npoints].x || + points[npoints-1].y != points[npoints].y) + npoints++; + } - if ((dc->glx_context = init_GL(mi)) != NULL) { - gl_init(mi); - reshape_logo (mi, MI_WIDTH(mi), MI_HEIGHT(mi)); - } + /* Mark up the histo array to find the outer border. */ + { + int i; + for (i = dial; + (direction > 0 + ? i <= dial1 + : i >= dial1); + i += direction) + { + int x = (i + 26) % 26; + int y; + for (y = 0; y <= letter; y++) + histo[y * 26 + x]++; + } + } - dc->wall_facets = get_integer_resource(mi->dpy, "wallFacets", "Integer"); - dc->bar_facets = get_integer_resource(mi->dpy, "barFacets", "Integer"); - dc->clockwise = get_boolean_resource(mi->dpy, "clockwise", "Boolean"); - dc->turns = get_float_resource(mi->dpy, "turns", "Float"); - dc->turn_spacing = get_float_resource(mi->dpy, "turnSpacing", "Float"); - dc->bar_spacing = get_float_resource(mi->dpy, "barSpacing", "Float"); - dc->wall_height = get_float_resource(mi->dpy, "wallHeight", "Float"); - dc->wall_thickness = get_float_resource(mi->dpy, "wallThickness", "Float"); - dc->bar_thickness = get_float_resource(mi->dpy, "barThickness", "Float"); - dc->wall_taper = get_float_resource(mi->dpy, "wallTaper", "Float"); + dc->codeword_text_points[letter] = npoints; - dc->gasket_size = get_float_resource(mi->dpy,"gasketSize", "Float"); - dc->gasket_depth = get_float_resource(mi->dpy,"gasketDepth", "Float"); - dc->gasket_thickness = get_float_resource(mi->dpy,"gasketThickness","Float"); + dial = dial1; + } + } - dc->frame_size = get_float_resource(mi->dpy, "frameSize", "Float"); - dc->frame_depth = get_float_resource(mi->dpy, "frameDepth", "Float"); - dc->frame_thickness = get_float_resource(mi->dpy, "frameThickness", "Float"); - dc->triangle_size = get_float_resource(mi->dpy, "triangleSize", "Float"); + if (npoints >= letters * outer_facets) abort(); - dc->speed = get_float_resource(mi->dpy, "speed", "Float"); - dc->pizza_p = get_boolean_resource(mi->dpy, "pizza", "Boolean"); +# if 0 + { /* Print histo */ + int x, y; + for (y = 0; y < letters; y++) + { + fprintf (stderr, "%2d: ", y); + for (x = 0; x < 26; x++) + fprintf (stderr, "%x", histo[y * 26 + x]); + fprintf (stderr, "\n"); + } + fprintf (stderr, "\n"); + } +# endif - { - XColor xcolor; - char *color_name = get_string_resource (mi->dpy, "foreground", "Foreground"); - char *s2; - for (s2 = color_name + strlen(color_name) - 1; s2 > color_name; s2--) - if (*s2 == ' ' || *s2 == '\t') - *s2 = 0; - else - break; + /* Find a gap in the outer edge, to draw guide dots. */ + { + int x, y; + int last_row = letters; + int start_dial = -1, end_dial = -1; - if (! XParseColor (MI_DISPLAY(mi), mi->xgwa.colormap, color_name, &xcolor)) + for (y = letters-1; y >= 0; y--) { - fprintf (stderr, "%s: can't parse color %s\n", progname, color_name); - exit (1); + for (x = 0; x < 26; x++) + { + if (histo[y * 26 + x] == 0) + { + if (last_row != y) + start_dial = end_dial = -1; + last_row = y; + if (start_dial == -1) + start_dial = x; + end_dial = x; + } + } } - dc->color[0] = xcolor.red / 65535.0; - dc->color[1] = xcolor.green / 65535.0; - dc->color[2] = xcolor.blue / 65535.0; - dc->color[3] = 1.0; + if (last_row < letters-1 && start_dial >= 0) + { + GLfloat r = iradius + rtick * (last_row + 2); + int i; + + dc->codeword_nguides = 0; + dc->codeword_guides = (XYZ *) + calloc (end_dial - start_dial + 1, sizeof (*dc->codeword_guides)); + for (i = start_dial; i <= end_dial; i++) + { + GLfloat th = i * M_PI * 2 / 26; + GLfloat x = r * cos (th); + GLfloat y = r * sin (th); + dc->codeword_guides[dc->codeword_nguides].x = x; + dc->codeword_guides[dc->codeword_nguides].y = y; + dc->codeword_nguides++; + } + } + free (histo); + histo = 0; } - dc->trackball = gltrackball_init (); + dc->codeword_path_npoints = npoints; + dc->codeword_path = points; +} - dc->gasket_spinnery.probability = 0.1; - dc->gasket_spinnerx.probability = 0.1; - dc->gasket_spinnerz.probability = 1.0; - dc->helix_spinnerz.probability = 0.6; - dc->helix_spinnery.probability = (dc->pizza_p ? 0.6 : 0); - dc->scene_spinnerx.probability = 0.1; - dc->scene_spinnery.probability = 0.0; - dc->frame_spinner.probability = 5.0; - /* start the frame off-screen */ - dc->frame_spinner.spinning_p = True; - dc->frame_spinner.position = 0.3; - dc->frame_spinner.speed = 0.001; +static int +draw_codeword_cap (ModeInfo *mi) +{ + logo_configuration *dc = &dcs[MI_SCREEN(mi)]; + int wire = MI_IS_WIREFRAME(mi); + int polys = 0; - if (dc->speed > 0) /* start off with the gasket in motion */ - { - dc->gasket_spinnerz.spinning_p = True; - dc->gasket_spinnerz.speed = (0.002 - * ((random() & 1) ? 1 : -1) - * dc->speed); - } + int segments = dc->codeword_disc_facets; + GLfloat size = dc->codeword_spread * dc->codeword_cap_size; + GLfloat width = dc->codeword_line_width / 2; + GLfloat thick = dc->codeword_thickness / 2; + GLfloat r1 = size + width/2; + GLfloat r2 = size - width/2; + GLfloat facet, th, z; -# ifdef DXF_OUTPUT_HACK - { - dc->frame_depth = dc->gasket_depth; - dxf_layer = 1; - dxf_color = 3; - dxf_start(); - glPushMatrix(); - glRotatef(90, 1, 0, 0); - glRotatef(90, 0, 0, 1); - if (dc->pizza_p) - make_pizza (dc, 0, 0); - else - { - glPushMatrix(); - glRotatef(helix_rot, 0, 0, 1); - make_ladder (dc, 0, 0); - make_helix (dc, 0, 0); - glRotatef (180, 0, 0, 1); - make_helix (dc, 0, 0); - glPopMatrix(); - } - dxf_layer++; - make_gasket (dc, 0); - dxf_layer++; - make_frame (dc, 0); - glPopMatrix(); - dxf_end(); - } -# endif + if (wire) segments = 12; + facet = M_PI * 2 / segments; glPushMatrix(); - dc->helix_list = glGenLists (1); - glNewList (dc->helix_list, GL_COMPILE); - glRotatef(helix_rot, 0, 0, 1); - if (do_ladder) dc->polys[0] += make_ladder (dc, 0, 0); + + /* Top and bottom */ + + for (z = -thick; z <= thick; z += thick*2) + { + glNormal3f (0, 0, (z < 0 ? -1 : 1)); + glFrontFace (z < 0 ? GL_CCW : GL_CW); + + glBegin (wire ? GL_LINES : GL_QUAD_STRIP); + for (th = 0; th <= M_PI*2; th += facet) + { + GLfloat x = cos (th); + GLfloat y = sin (th); + glVertex3f (r1 * x, r1 * y, z); + glVertex3f (r2 * x, r2 * y, z); + } + glEnd(); + + if (wire) + { + glBegin (GL_LINE_LOOP); + for (th = 0; th <= M_PI*2; th += facet) + { + GLfloat x = cos (th); + GLfloat y = sin (th); + glVertex3f (r1 * x, r1 * y, z); + } + glEnd(); + glBegin (GL_LINE_LOOP); + for (th = 0; th <= M_PI*2; th += facet) + { + GLfloat x = cos (th); + GLfloat y = sin (th); + glVertex3f (r2 * x, r2 * y, z); + } + glEnd(); + } + } + + /* Inside and outside */ + + for (z = -1; z <= 1; z += 2) + { + glFrontFace (z < 0 ? GL_CCW : GL_CW); + + glBegin (wire ? GL_LINES : GL_QUAD_STRIP); + for (th = 0; th <= M_PI*2; th += facet) + { + GLfloat th1 = th + facet; + GLfloat x0 = cos (th); + GLfloat y0 = sin (th); + GLfloat x1 = cos (th1); + GLfloat y1 = sin (th1); + GLfloat r = z < 0 ? r1 : r2; + + if (z < 0) + do_normal (r * x0, r * y0, thick, + r * x0, r * y0, -thick, + r * x1, r * y1, -thick); + else + do_normal (r * x1, r * y1, thick, + r * x1, r * y1, -thick, + r * x0, r * y0, -thick); + + glVertex3f (r * x0, r * y0, thick); + glVertex3f (r * x0, r * y0, -thick); + } + glEnd(); + } + + glPopMatrix(); + + return polys; +} + + +static int +draw_codeword_guides (ModeInfo *mi, GLfloat anim_ratio) +{ + logo_configuration *dc = &dcs[MI_SCREEN(mi)]; + int wire = MI_IS_WIREFRAME(mi); + int polys = 0; + + int segments = dc->codeword_disc_facets; + GLfloat s = dc->codeword_line_width / 2; + GLfloat each = 1.0 / dc->codeword_nguides; + int i; + + if (wire) segments = 6; + + for (i = 0; i < dc->codeword_nguides; i++) + { + GLfloat ratio; + if (anim_ratio < i*each) ratio = 0; + else if (anim_ratio >= (i+1)*each) ratio = 1; + else ratio = (anim_ratio - i*each) / each; + + if (ratio <= 0) continue; + if (ratio == 0) ratio = 0.001; + + glPushMatrix(); + glTranslatef (dc->codeword_guides[i].x, + dc->codeword_guides[i].y, + dc->codeword_guides[i].z); + + glScalef (ratio, ratio, ratio); + + /* If the line width and thickness are pretty close to each other, + use spheres. Otherwise use tubes. + */ + if (dc->codeword_thickness < dc->codeword_line_width * 1.3 && + dc->codeword_thickness > dc->codeword_line_width / 1.3) + { + glScalef (s, s, s); + glFrontFace (GL_CCW); + polys += unit_sphere (segments, segments, wire); + } + else + { + polys += tube (0, 0, -dc->codeword_thickness / 2, + 0, 0, dc->codeword_thickness / 2, + s, 0, segments, True, True, wire); + } + + glPopMatrix(); + } + + return polys; +} + + +/* Compute the characters at which the cursor is currently pointing, + and render it on the logo. + */ +static void +codeword_text_output (ModeInfo *mi, GLfloat anim_ratio) +{ + logo_configuration *dc = &dcs[MI_SCREEN(mi)]; + int i; + int L = strlen (dc->codeword_text); + int point = dc->codeword_path_npoints * anim_ratio; + Bool hit = False; + + if (dc->anim_state == CODEWORD_BLANK) + point = 0; + + for (i = 0; i < L; i++) + { + if (point >= dc->codeword_text_points[i]) + dc->codeword_text_out[i] = dc->codeword_text[i]; + else if (hit) + dc->codeword_text_out[i] = 0; + else + { + int steps = dc->codeword_text[i] - 'A' + 1; + int last = (i > 0 ? dc->codeword_text_points[i-1] : 0); + double ratio = ((point - last) / + (double) (dc->codeword_text_points[i] - last)); + char chr = 'A' + (ratio * steps); + if (ratio < 0.1) chr = 0; + dc->codeword_text_out[i] = chr; + hit = True; + } + } + dc->codeword_text_out[i] = 0; + + if (*dc->codeword_text_out && + !strcmp (dc->codeword_text, "CODEWORD")) + { + int i; + int L2 = strlen (dc->codeword_text_out); + GLfloat ss = 0.01; + int ascent, descent; + + glPushMatrix(); + glColor4fv (dc->codeword_color); + glRotatef (90, 0, 1, 0); + glRotatef (-90, 0, 0, 1); + + for (i = 0; i < L2; i++) + { + XCharStruct e; + char buf[2]; + glPushMatrix(); + glRotatef ((i + 0.5) * 360 / 26.0, 0, 0, 1); + +# if 0 + { + GLfloat th; + glDisable(GL_LIGHTING); + glBegin(GL_LINES); + glVertex3f(0,0,0); + glVertex3f(0,-4,0); + glEnd(); + glBegin(GL_LINE_STRIP); + for (th = M_PI * 1.45; th < M_PI * 1.55; th += 0.1) + { + GLfloat r = 3.85; + glVertex3f (r * cos(th), r * sin(th), 0); + } + glEnd(); + if (!MI_IS_WIREFRAME(mi)) glEnable(GL_LIGHTING); + } +# endif + + glTranslatef (0, -dc->codeword_spread * (L - 1), 0); + glScalef (ss, ss, ss); + buf[0] = dc->codeword_text_out[i] + ('a' - 'A'); + buf[1] = 0; + texture_string_metrics (dc->font, buf, &e, &ascent, &descent); + +# ifdef HAVE_MOBILE + /* #### Magic magic magic WTF... */ + glScalef (0.5, 0.5, 0.5); +# endif + + glTranslatef (-e.width * 1.0, + -(ascent + descent + e.descent * 2.4), /* #### WTF */ + 0); + + glScalef (2, 2, 2); + +# if 0 + glDisable(GL_LIGHTING); + glBegin(GL_LINE_LOOP); + glVertex3f(0, 0, 0); + glVertex3f(e.width, 0, 0); + glVertex3f(e.width, e.ascent + e.descent, 0); + glVertex3f(0, e.ascent + e.descent, 0); + glEnd(); + if (!MI_IS_WIREFRAME(mi)) glEnable(GL_LIGHTING); +# endif + + glDisable(GL_CULL_FACE); /* tell texfont.c to draw both sides */ + print_texture_string (dc->font, buf); + glEnable(GL_CULL_FACE); + + glPopMatrix(); + } + glPopMatrix(); + } +} + + +/* Convert the precomputed path to a thick line of polygons. + We could actually precompute all of these polygons too, + but it's fast enough. + */ +static int +draw_codeword_path (ModeInfo *mi) +{ + logo_configuration *dc = &dcs[MI_SCREEN(mi)]; + int wire = MI_IS_WIREFRAME(mi); + int polys = 0; + + GLfloat anim_ratio = (dc->anim_state == CODEWORD_IN ? dc->anim_ratio : + dc->anim_state == CODEWORD_OUT ? 1 - dc->anim_ratio : + dc->anim_state == CODEWORD_BLANK ? 0 : + 1); + int last_anim_point = 0; + + GLfloat width = dc->codeword_line_width / 2; + GLfloat thick = dc->codeword_thickness / 2; + int i, k; + GLfloat j; + + int quad_size = (dc->codeword_path_npoints + 1) * 2; + XYZ *quads = (XYZ *) calloc (quad_size, sizeof(*quads)); + XYZ *norms = (XYZ *) calloc (quad_size, sizeof(*norms)); + int nquads = 0; + + for (i = 0; i < dc->codeword_path_npoints; i++) + { + XYZ p1 = dc->codeword_path[i]; + XYZ p2 = (i < dc->codeword_path_npoints-1 + ? dc->codeword_path[i+1] + : dc->codeword_path[i-1]); + XYZ p1a, p1b; + + XYZ n; /* normal of the first line segment */ + n.x = -(p2.y - p1.y); + n.y = (p2.x - p1.x); + n.z = 0; + normalize (&n); + + if (i == 0) + { + p1a.x = p1.x - width / 2 * n.x; + p1a.y = p1.y - width / 2 * n.y; + p1a.z = 0; + + p1b.x = p1.x + width / 2 * n.x; + p1b.y = p1.y + width / 2 * n.y; + p1b.z = 0; + } + else if (i == dc->codeword_path_npoints - 1) + { + p1b.x = p1.x - width / 2 * n.x; + p1b.y = p1.y - width / 2 * n.y; + p1b.z = 0; + + p1a.x = p1.x + width / 2 * n.x; + p1a.y = p1.y + width / 2 * n.y; + p1a.z = 0; + } + else + { + XYZ p0 = dc->codeword_path[i-1]; + + XYZ t, t0, t1; /* tangent of corner between two line segments */ + XYZ m; /* miter line: normal of tangent */ + GLfloat d; /* length of miter */ + + t0.x = p2.x - p1.x; + t0.y = p2.y - p1.y; + t0.z = p2.z - p1.z; + normalize (&t0); + + t1.x = p1.x - p0.x; + t1.y = p1.y - p0.y; + t1.z = p1.z - p0.z; + normalize (&t1); + + t.x = t0.x + t1.x; + t.y = t0.y + t1.y; + t.z = t0.z + t1.z; + normalize (&t); + + m.x = -t.y; + m.y = t.x; + m.z = 0; + + /* find length of miter by projecting it on one of the normals */ + d = width / 2 / dot (m, n); + + p1a.x = p1.x - d * m.x; + p1a.y = p1.y - d * m.y; + p1a.z = 0; + + p1b.x = p1.x + d * m.x; + p1b.y = p1.y + d * m.y; + p1b.z = 0; + } + + quads[nquads++] = p1a; + quads[nquads++] = p1b; + + if (nquads >= quad_size) abort(); + + if (i / (double) dc->codeword_path_npoints > anim_ratio) + break; + + last_anim_point = i; + } + + + /* Compute normals for each point along the interior edge */ + for (k = 0; k <= 1; k++) + { + for (i = k; i < nquads-2; i += 2) + { + XYZ p1a = quads[i]; + XYZ p2a = quads[i+2]; + XYZ p1b = p1a; + XYZ p2b = p2a; + p1a.z = thick; /* a: top */ + p1b.z = -thick; /* b: bottom */ + p2a.z = thick; + p2b.z = -thick; + + norms[i] = (k == 0 + ? calc_normal (p1a, p1b, p2b) + : calc_normal (p2a, p2b, p1a)); + } + } + + glPushMatrix(); + glColor4fv (dc->codeword_color); + glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, dc->codeword_color); + +# ifdef HAVE_MOBILE /* Make the whole thing fit on the phone screen */ + { + GLfloat size = MI_WIDTH(mi) < MI_HEIGHT(mi) ? MI_WIDTH(mi) : MI_HEIGHT(mi); + glScalef (0.9, 0.9, 0.9); + if (size <= 768) /* iPad retina / iPhone 6 */ + glScalef (0.7, 0.7, 0.7); + } +# endif + + codeword_text_output (mi, anim_ratio); + + glRotatef (90, 1, 0, 0); + glRotatef (90, 0, 1, 0); + glRotatef (-90, 0, 0, 1); + glScalef (0.8, 0.8, 0.8); + + glNormal3f (0, 0, -1); + + if (anim_ratio <= 0) + { + polys += draw_codeword_cap (mi); + goto DONE; + } + +# if 0 + glColor3f (1, 0, 0); + glBegin(GL_LINE_STRIP); + for (i = 0; i < dc->codeword_path_npoints; i++) + { + glVertex3f (dc->codeword_path[i].x, + dc->codeword_path[i].y, + dc->codeword_path[i].z); + polys++; + } + glEnd(); + glColor4fv (dc->codeword_color); +# endif + + if (wire) + { + int k; + GLfloat j; + for (i = 0; i <= 1; i++) + for (j = -thick; j <= thick; j += thick*2) + { + glBegin (GL_LINE_STRIP); + for (k = i; k < nquads; k += 2) + { + glVertex3f (quads[k].x, quads[k].y, j); + polys++; + } + glEnd(); + } + } + + /* Top and bottom */ + + for (j = -thick; j <= thick; j += thick*2) + { + if (j < 0) + { + glNormal3f (0, 0, -1); + glFrontFace (GL_CW); + } + else + { + glNormal3f (0, 0, 1); + glFrontFace (GL_CCW); + } + glBegin (wire ? GL_LINES : GL_QUAD_STRIP); + for (i = 0; i < nquads; i += 2) + { + glVertex3f (quads[i+1].x, quads[i+1].y, j); + glVertex3f (quads[i].x, quads[i].y, j); + polys++; + } + glEnd(); + } + + /* Edges */ + + for (k = 0; k <= 1; k++) + { + if (k > 0) + { + glNormal3f (0, 0, -1); + glFrontFace (GL_CW); + } + else + { + glNormal3f (0, 0, 1); + glFrontFace (GL_CCW); + } + + glBegin (wire ? GL_LINES : GL_QUADS); + for (i = k; i < nquads; i += 2) + { + XYZ p1a = quads[i]; + XYZ p2a = (i < nquads-2) ? quads[i+2] : p1a; + XYZ p1b = p1a; + XYZ p2b = p2a; + + XYZ n1 = norms[i]; + XYZ n2 = (i < nquads-2) ? norms[i+2] : n1; + + /* If the two normals are very similar, smooth the face. + If they are different, it's a sharp turn, and use the + same normal for both edges (not quite right, but close). + */ + GLfloat angle = vector_angle (n1.x, n1.y, n1.z, + n2.x, n2.y, n2.z); + GLfloat pointy = 0.8; + + p1a.z = thick; + p1b.z = -thick; + p2a.z = thick; + p2b.z = -thick; + + glNormal3f (n1.x, n1.y, n1.z); + glVertex3f (p1a.x, p1a.y, p1a.z); + glVertex3f (p1b.x, p1b.y, p1b.z); + + if (angle < pointy) + glNormal3f (n2.x, n2.y, n2.z); + glVertex3f (p2b.x, p2b.y, p2b.z); + glVertex3f (p2a.x, p2a.y, p2a.z); + polys++; + } + glEnd(); + } + + + /* Only draw the guides when the path is almost complete; + fade them in and out based on completeness. */ + { + GLfloat size = 0.95; + GLfloat r = (anim_ratio > size + ? (anim_ratio - size) / (1 - size) + : 0); + polys += draw_codeword_guides (mi, r); + } + + + /* Draw the start and end caps */ + { + int i; + GLfloat x, y, z, x2, y2, z2, X, Y, Z; + GLfloat r = dc->codeword_spread * dc->codeword_cap_size; + + i = 0; + x = dc->codeword_path[i].x; + y = dc->codeword_path[i].y; + z = dc->codeword_path[i].z; + + x -= r; + + glPushMatrix(); + glTranslatef (x, y, z); + polys += draw_codeword_cap (mi); + glPopMatrix(); + + /* end cap */ + + i = last_anim_point + 1; + if (i > dc->codeword_path_npoints - 1) + i = dc->codeword_path_npoints - 1; + + x = dc->codeword_path[i].x; + y = dc->codeword_path[i].y; + z = dc->codeword_path[i].z; + + i--; + x2 = dc->codeword_path[i].x; + y2 = dc->codeword_path[i].y; + z2 = dc->codeword_path[i].z; + + X = (x2 - x); + Y = (y2 - y); + Z = (z2 - z); + + glPushMatrix(); + glTranslatef (x, y, z); + glRotatef (-atan2 (X, Y) * (180 / M_PI), 0, 0, 1); + glRotatef ( atan2 (Z, sqrt(X*X + Y*Y)) * (180 / M_PI), 1, 0, 0); + glTranslatef (0, -r, 0); + polys += draw_codeword_cap (mi); + glPopMatrix(); + } + + DONE: + + glPopMatrix(); + + free (quads); + free (norms); + + return polys; +} + + + +/* Window management, etc + */ +ENTRYPOINT void +reshape_logo (ModeInfo *mi, int width, int height) +{ + GLfloat h = (GLfloat) height / (GLfloat) width; + + glViewport (0, 0, (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); + +# ifdef HAVE_MOBILE /* Keep it the same relative size when rotated. */ + { + int o = (int) current_device_rotation(); + if (o != 0 && o != 180 && o != -180) + glScalef (1/h, 1/h, 1/h); /* #### Why does this change the lighting? */ + } +# endif + + glClear(GL_COLOR_BUFFER_BIT); +} + + +static void +gl_init (ModeInfo *mi) +{ +/* logo_configuration *dc = &dcs[MI_SCREEN(mi)]; */ + int wire = MI_IS_WIREFRAME(mi); + + GLfloat position[] = {0, 0, 0, 0}; + GLfloat direction[] = {3, -1, -3}; + + position[0] = -direction[0]; + position[1] = -direction[1]; + position[2] = -direction[2]; + + if (!wire) + { + glLightfv(GL_LIGHT0, GL_POSITION, position); + glLightfv(GL_LIGHT0, GL_SPOT_DIRECTION, direction); + glShadeModel(GL_SMOOTH); + glEnable(GL_NORMALIZE); + glEnable(GL_CULL_FACE); + glEnable(GL_LIGHTING); + glEnable(GL_LIGHT0); + glEnable(GL_DEPTH_TEST); + } +} + + +ENTRYPOINT void +init_logo (ModeInfo *mi) +{ + logo_configuration *dc; + int do_gasket = get_boolean_resource(mi->dpy, "doGasket", "Boolean"); + int do_helix = get_boolean_resource(mi->dpy, "doHelix", "Boolean"); + int do_ladder = (do_helix && + get_boolean_resource(mi->dpy, "doLadder", "Boolean")); + int do_frame = get_boolean_resource(mi->dpy, "doFrame", "Boolean"); + GLfloat helix_rot = 147.0; + + if (!do_gasket && !do_helix) + { + fprintf (stderr, "%s: no helix or gasket?\n", progname); + exit (1); + } + + if (!dcs) { + dcs = (logo_configuration *) + calloc (MI_NUM_SCREENS(mi), sizeof (logo_configuration)); + if (!dcs) { + fprintf(stderr, "%s: out of memory\n", progname); + exit(1); + } + } + + dc = &dcs[MI_SCREEN(mi)]; + + if ((dc->glx_context = init_GL(mi)) != NULL) { + gl_init(mi); + reshape_logo (mi, MI_WIDTH(mi), MI_HEIGHT(mi)); + } + + dc->wall_facets = get_integer_resource(mi->dpy, "wallFacets", "Integer"); + dc->bar_facets = get_integer_resource(mi->dpy, "barFacets", "Integer"); + dc->clockwise = get_boolean_resource(mi->dpy, "clockwise", "Boolean"); + dc->turns = get_float_resource(mi->dpy, "turns", "Float"); + dc->turn_spacing = get_float_resource(mi->dpy, "turnSpacing", "Float"); + dc->bar_spacing = get_float_resource(mi->dpy, "barSpacing", "Float"); + dc->wall_height = get_float_resource(mi->dpy, "wallHeight", "Float"); + dc->wall_thickness = get_float_resource(mi->dpy, "wallThickness", "Float"); + dc->bar_thickness = get_float_resource(mi->dpy, "barThickness", "Float"); + dc->wall_taper = get_float_resource(mi->dpy, "wallTaper", "Float"); + + dc->gasket_size = get_float_resource(mi->dpy,"gasketSize", "Float"); + dc->gasket_depth = get_float_resource(mi->dpy,"gasketDepth", "Float"); + dc->gasket_thickness = get_float_resource(mi->dpy,"gasketThickness","Float"); + + dc->frame_size = get_float_resource(mi->dpy, "frameSize", "Float"); + dc->frame_depth = get_float_resource(mi->dpy, "frameDepth", "Float"); + dc->frame_thickness = get_float_resource(mi->dpy, "frameThickness", "Float"); + dc->triangle_size = get_float_resource(mi->dpy, "triangleSize", "Float"); + + dc->speed = get_float_resource(mi->dpy, "speed", "Float"); + dc->codeword_text = get_string_resource(mi->dpy, "text", "String"); + dc->codeword_text = codeword_simplify_text (dc->codeword_text); + dc->codeword_text_out = + calloc (strlen(dc->codeword_text) + 1, sizeof(*dc->codeword_text_out)); + dc->codeword_text_points = + (int *) calloc (strlen(dc->codeword_text) + 1, + sizeof(*dc->codeword_text_points)); + + dc->codeword_facets = get_integer_resource(mi->dpy, "cwFacets", "Integer"); + dc->codeword_disc_facets = get_integer_resource(mi->dpy, + "cwDiscFacets", "Integer"); + dc->codeword_spread = get_float_resource(mi->dpy, "cwSpread", "Float"); + dc->codeword_line_width = get_float_resource(mi->dpy, "cwLineWidth", "Float"); + dc->codeword_thickness = get_float_resource(mi->dpy, "cwThickness", "Float"); + dc->codeword_cap_size = get_float_resource(mi->dpy, "cwCapSize", "Float"); + + { + char *s = get_string_resource (MI_DISPLAY (mi), "mode", "String"); + if (!s || !*s || !strcasecmp (s, "helix")) + dc->mode = HELIX; + else if (!strcasecmp (s, "pizza")) + dc->mode = PIZZA; + else if (!strcasecmp (s, "both")) + dc->mode = HELIX_AND_PIZZA; + else if (!strcasecmp (s, "codeword")) + dc->mode = CODEWORD_IN; + else + { + fprintf (stderr, + "%s: mode must be helix, pizza, both or codeword, not \"%s\"\n", + progname, s); + exit (1); + } + if (s) free (s); + + dc->anim_state = (dc->mode == HELIX_AND_PIZZA + ? ((random() & 1) ? HELIX : PIZZA) + : dc->mode); + dc->anim_ratio = 0; + } + + if (dc->mode == CODEWORD_IN) + dc->font = load_texture_font (MI_DISPLAY(mi), "cwFont"); + + { + XColor xcolor; + + char *color_name = + get_string_resource (mi->dpy, "foreground", "Foreground"); + char *s2; + for (s2 = color_name + strlen(color_name) - 1; s2 > color_name; s2--) + if (*s2 == ' ' || *s2 == '\t') + *s2 = 0; + else + break; + + if (! XParseColor (MI_DISPLAY(mi), mi->xgwa.colormap, color_name, &xcolor)) + { + fprintf (stderr, "%s: can't parse color %s\n", progname, color_name); + exit (1); + } + + dc->color[0] = xcolor.red / 65535.0; + dc->color[1] = xcolor.green / 65535.0; + dc->color[2] = xcolor.blue / 65535.0; + dc->color[3] = 1.0; + + color_name = get_string_resource (mi->dpy, "cwForeground", "Foreground"); + for (s2 = color_name + strlen(color_name) - 1; s2 > color_name; s2--) + if (*s2 == ' ' || *s2 == '\t') + *s2 = 0; + else + break; + + if (! XParseColor (MI_DISPLAY(mi), mi->xgwa.colormap, color_name, &xcolor)) + { + fprintf (stderr, "%s: can't parse color %s\n", progname, color_name); + exit (1); + } + + dc->codeword_color[0] = xcolor.red / 65535.0; + dc->codeword_color[1] = xcolor.green / 65535.0; + dc->codeword_color[2] = xcolor.blue / 65535.0; + dc->codeword_color[3] = 1.0; + + color_name = get_string_resource (mi->dpy, "cwBackground", "Background"); + for (s2 = color_name + strlen(color_name) - 1; s2 > color_name; s2--) + if (*s2 == ' ' || *s2 == '\t') + *s2 = 0; + else + break; + + if (! XParseColor (MI_DISPLAY(mi), mi->xgwa.colormap, color_name, &xcolor)) + { + fprintf (stderr, "%s: can't parse color %s\n", progname, color_name); + exit (1); + } + + dc->codeword_bg[0] = xcolor.red / 65535.0; + dc->codeword_bg[1] = xcolor.green / 65535.0; + dc->codeword_bg[2] = xcolor.blue / 65535.0; + dc->codeword_bg[3] = 1.0; + } + + dc->trackball = gltrackball_init (False); + + dc->gasket_spinnerx.probability = 0.1; + dc->gasket_spinnery.probability = 0.1; + dc->gasket_spinnerz.probability = 1.0; + dc->gasket_spinnerx.easement = 0.08; + dc->gasket_spinnery.easement = 0.08; + dc->gasket_spinnerz.easement = 0.08; + + dc->helix_spinnerz.probability = 0.6; + dc->helix_spinnerz.easement = 0.2; + + dc->pizza_spinnerz.probability = 0.6; + dc->pizza_spinnery.probability = 0.6; + dc->pizza_spinnerz.easement = 0.2; + dc->pizza_spinnery.easement = 0.2; + + dc->frame_spinner.probability = 5.0; + dc->frame_spinner.easement = 0.2; + + dc->scene_spinnerx.probability = 0.1; + dc->scene_spinnery.probability = 0.0; + dc->scene_spinnerx.easement = 0.1; + dc->scene_spinnery.easement = 0.1; + + if (dc->mode == CODEWORD_IN) + { + double tilt_speed = 0.003; + dc->scene_rot = make_rotator (0, 0, 0, 0, tilt_speed, True); + } + + /* start the frame off-screen */ + dc->frame_spinner.spinning_p = True; + dc->frame_spinner.position = 0.3; + dc->frame_spinner.speed = 0.001; + + if (dc->speed > 0) /* start off with the gasket in motion */ + { + dc->gasket_spinnerz.spinning_p = True; + dc->gasket_spinnerz.speed = (0.002 + * ((random() & 1) ? 1 : -1) + * dc->speed); + } + +# ifdef DXF_OUTPUT_HACK + { +# if 0 + dc->frame_depth = dc->gasket_depth; + dxf_layer = 1; + dxf_color = 3; + dxf_start(); + glPushMatrix(); + glRotatef(90, 1, 0, 0); + glRotatef(90, 0, 0, 1); + make_pizza (dc, 0, 0); + + glPushMatrix(); + glRotatef(helix_rot, 0, 0, 1); + make_ladder (dc, 0, 0); + make_helix (dc, 0, 0); + glRotatef (180, 0, 0, 1); + make_helix (dc, 0, 0); + glPopMatrix(); + + dxf_layer++; + make_gasket (dc, 0); + dxf_layer++; + make_frame (dc, 0); + glPopMatrix(); + dxf_end(); +# else + dxf_start(); + glPushMatrix(); + glRotatef(90, 1, 0, 0); + glRotatef(90, 0, 0, 1); + dc->anim_state = CODEWORD; + make_codeword_path (mi); + draw_codeword_path (mi); + glPopMatrix(); + dxf_end(); +# endif + } +# endif + + glPushMatrix(); + dc->helix_list = glGenLists (1); + glNewList (dc->helix_list, GL_COMPILE); + glRotatef(helix_rot, 0, 0, 1); + if (do_ladder) dc->polys[0] += make_ladder (dc, 0, 0); if (do_helix) dc->polys[0] += make_helix (dc, 0, 0); glRotatef(180, 0, 0, 1); if (do_helix) dc->polys[0] += make_helix (dc, 0, 0); @@ -1998,6 +3083,9 @@ init_logo (ModeInfo *mi) if (do_frame) dc->polys[6] += make_frame (dc, 1); glEndList (); + make_codeword_path (mi); + + /* When drawing both solid and wireframe objects, make sure the wireframe actually shows up! */ glEnable (GL_POLYGON_OFFSET_FILL); @@ -2010,44 +3098,48 @@ logo_handle_event (ModeInfo *mi, XEvent *event) { logo_configuration *dc = &dcs[MI_SCREEN(mi)]; - if (event->xany.type == ButtonPress && - event->xbutton.button == Button1) - { - dc->button_down_p = True; - gltrackball_start (dc->trackball, - event->xbutton.x, event->xbutton.y, - MI_WIDTH (mi), MI_HEIGHT (mi)); - return True; - } - else if (event->xany.type == ButtonRelease && - event->xbutton.button == Button1) + if (gltrackball_event_handler (event, dc->trackball, + MI_WIDTH (mi), MI_HEIGHT (mi), + &dc->button_down_p)) + return True; + else if (event->xany.type == KeyPress) { - dc->button_down_p = False; - return True; - } - else if (event->xany.type == ButtonPress && - (event->xbutton.button == Button4 || - event->xbutton.button == Button5 || - event->xbutton.button == Button6 || - event->xbutton.button == Button7)) - { - gltrackball_mousewheel (dc->trackball, event->xbutton.button, 10, - !!event->xbutton.state); - return True; - } - else if (event->xany.type == MotionNotify && - dc->button_down_p) - { - gltrackball_track (dc->trackball, - event->xmotion.x, event->xmotion.y, - MI_WIDTH (mi), MI_HEIGHT (mi)); - return True; + KeySym keysym; + char c = 0; + XLookupString (&event->xkey, &c, 1, &keysym, 0); + if (c == ' ' || c == '\t') + { + switch (dc->anim_state) { + case HELIX: + dc->anim_state = HELIX_OUT; + dc->anim_ratio = 0.0; + return True; + case PIZZA: + dc->anim_state = PIZZA_OUT; + dc->anim_ratio = 0.0; + return True; + case CODEWORD: + dc->anim_state = CODEWORD_OUT; + dc->anim_ratio = 0.0; + return True; + default: + break; + } + } } return False; } +static GLfloat +spinner_ease (GLfloat x) +{ + /* Smooth curve up, ending at slope = 1. */ + return cos ((x/2 + 1) * M_PI) + 1; +} + + static void tick_spinner (ModeInfo *mi, spinner *s) { @@ -2059,12 +3151,20 @@ tick_spinner (ModeInfo *mi, spinner *s) if (s->spinning_p) { s->position += s->speed; - if (s->position >= 1.0 || s->position <= -1.0) - + if (s->position >= 1.0 || s->position <= 0.0) { s->position = 0; + s->position_eased = 0; s->spinning_p = False; } + else if (s->easement > 0 && s->position <= s->easement) + s->position_eased = (s->easement * + spinner_ease (s->position / s->easement)); + else if (s->easement > 0 && s->position >= 1-s->easement) + s->position_eased = (1 - s->easement * + spinner_ease ((1 - s->position) / s->easement)); + else + s->position_eased = s->position; } else if (s->probability && (random() % (int) (PROBABILITY_SCALE / s->probability)) == 0) @@ -2076,7 +3176,10 @@ tick_spinner (ModeInfo *mi, spinner *s) s->speed = dc->speed * (frand(ss/3) + frand(ss/3) + frand(ss/3)); } while (s->speed <= 0); if (random() & 1) - s->speed = -s->speed; + { + s->speed = -s->speed; + s->position = 1.0; + } } } @@ -2104,6 +3207,8 @@ draw_logo (ModeInfo *mi) GLfloat gcolor[4]; GLfloat specular[] = {0.8, 0.8, 0.8, 1.0}; GLfloat shininess = 50.0; + Bool pizza_p; + Bool codeword_p; if (!dc->glx_context) return; @@ -2111,7 +3216,8 @@ draw_logo (ModeInfo *mi) mi->polygon_count = 0; glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(dc->glx_context)); - if (dc->wire_overlay == 0 && + if (!wire && + dc->wire_overlay == 0 && (random() % (int) (PROBABILITY_SCALE / 0.2)) == 0) dc->wire_overlay = ((random() % 200) + (random() % 200) + @@ -2120,136 +3226,298 @@ draw_logo (ModeInfo *mi) tick_spinner (mi, &dc->gasket_spinnerx); tick_spinner (mi, &dc->gasket_spinnery); tick_spinner (mi, &dc->gasket_spinnerz); - tick_spinner (mi, &dc->helix_spinnery); tick_spinner (mi, &dc->helix_spinnerz); + tick_spinner (mi, &dc->pizza_spinnery); + tick_spinner (mi, &dc->pizza_spinnerz); tick_spinner (mi, &dc->scene_spinnerx); tick_spinner (mi, &dc->scene_spinnery); tick_spinner (mi, &dc->frame_spinner); link_spinners (mi, &dc->scene_spinnerx, &dc->scene_spinnery); - glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); - - glPushMatrix (); - { - glScalef(3, 3, 3); - - glColor3f(dc->color[0], dc->color[1], dc->color[2]); - - /* Draw frame before trackball rotation */ + switch (dc->anim_state) { - GLfloat p = (dc->frame_spinner.position >= 0 - ? dc->frame_spinner.position - : -dc->frame_spinner.position); - GLfloat size = (p > 0.5 ? 1-p : p); - GLfloat scale = 1 + (size * 10); - glPushMatrix(); - /* gltrackball_rotate (dc->trackball); */ - glRotatef(90, 1, 0, 0); - glRotatef(90, 0, 0, 1); - - glScalef (1, scale, scale); - if (wire) - { - glCallList (dc->frame_list_wire); - mi->polygon_count += dc->polys[6]; - } - else if (dc->wire_overlay != 0) + case HELIX: + if (dc->mode == HELIX_AND_PIZZA && + (random() % (int) (PROBABILITY_SCALE / 0.2)) == 0) + dc->anim_state = HELIX_OUT; + break; + + case HELIX_OUT: + dc->anim_ratio += 0.1 * dc->speed; + if (dc->anim_ratio >= 1.0) { - glCallList (dc->frame_list); - glDisable (GL_LIGHTING); - glCallList (dc->frame_list_wire); - mi->polygon_count += dc->polys[6]; - if (!wire) glEnable (GL_LIGHTING); + dc->anim_ratio = 0.0; + dc->anim_state = PIZZA_IN; } - else + break; + + case PIZZA_IN: + dc->anim_ratio += 0.1 * dc->speed; + if (dc->anim_ratio >= 1.0) { - glCallList (dc->frame_list); - mi->polygon_count += dc->polys[5]; + dc->anim_ratio = 0.0; + dc->anim_state = PIZZA; } - glPopMatrix(); - } + break; - gltrackball_rotate (dc->trackball); + case PIZZA: + if (dc->mode == HELIX_AND_PIZZA && + (random() % (int) (PROBABILITY_SCALE / 0.2)) == 0) + dc->anim_state = PIZZA_OUT; + break; - glRotatef(90, 1, 0, 0); - glRotatef(90, 0, 0, 1); + case PIZZA_OUT: + dc->anim_ratio += 0.1 * dc->speed; + if (dc->anim_ratio >= 1.0) + { + dc->anim_ratio = 0.0; + dc->anim_state = HELIX_IN; + } + break; - glRotatef (360 * sin (M_PI/2 * dc->scene_spinnerx.position), 0, 1, 0); - glRotatef (360 * sin (M_PI/2 * dc->scene_spinnery.position), 0, 0, 1); + case HELIX_IN: + dc->anim_ratio += 0.1 * dc->speed; + if (dc->anim_ratio >= 1.0) + { + dc->anim_ratio = 0.0; + dc->anim_state = HELIX; + } + break; - glPushMatrix(); - { - glRotatef (360 * sin (M_PI/2 * dc->gasket_spinnerx.position), 0, 1, 0); - glRotatef (360 * sin (M_PI/2 * dc->gasket_spinnery.position), 0, 0, 1); - glRotatef (360 * sin (M_PI/2 * dc->gasket_spinnerz.position), 1, 0, 0); - memcpy (gcolor, dc->color, sizeof (dc->color)); - if (dc->wire_overlay != 0) + case CODEWORD_IN: + dc->scene_spinnerx.probability = 0.2; + dc->scene_spinnery.probability = 0.05; + if (! dc->button_down_p) + dc->anim_ratio += 0.004 * dc->speed; + if (dc->anim_ratio >= 1.0) { - gcolor[0] = gcolor[1] = gcolor[2] = 0; - specular[0] = specular[1] = specular[2] = 0; - shininess = 0; + dc->anim_state = CODEWORD; + dc->anim_ratio = frand (0.5); } - glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, gcolor); - glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, specular); - glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, shininess); - - if (wire) + break; + + case CODEWORD: + dc->scene_spinnerx.probability = 0.5; + dc->scene_spinnery.probability = 0.2; + if (! dc->button_down_p) + dc->anim_ratio += (0.0005 + frand(0.002)) * dc->speed; + if (dc->anim_ratio >= 1.0) { - glCallList (dc->gasket_list_wire); - mi->polygon_count += dc->polys[4]; + dc->anim_ratio = 0.0; + dc->anim_state = CODEWORD_OUT; } - else if (dc->wire_overlay != 0) + break; + + case CODEWORD_OUT: + dc->scene_spinnerx.probability = 0; + dc->scene_spinnery.probability = 0; + if (! dc->button_down_p) + dc->anim_ratio += 0.02 * dc->speed; + if (dc->anim_ratio >= 1.0) { - glCallList (dc->gasket_list); - glDisable (GL_LIGHTING); - glCallList (dc->gasket_list_wire); - mi->polygon_count += dc->polys[4]; - if (!wire) glEnable (GL_LIGHTING); + dc->anim_ratio = 0.0; + dc->anim_state = CODEWORD_BLANK; } - else + break; + + case CODEWORD_BLANK: + dc->scene_spinnerx.probability = 0; + dc->scene_spinnery.probability = 0; + if (! dc->button_down_p) + dc->anim_ratio += 0.01 * dc->speed; + if (dc->anim_ratio >= 1.0) { - glCallList (dc->gasket_list); - mi->polygon_count += dc->polys[3]; + dc->anim_ratio = 0.0; + dc->anim_state = CODEWORD_IN; } + break; + + default: + abort(); + break; } - glPopMatrix(); - glRotatef (360 * sin (M_PI/2 * dc->helix_spinnery.position), 1, 0, 0); - glRotatef (360 * sin (M_PI/2 * dc->helix_spinnerz.position), 0, 0, 1); + pizza_p = (dc->anim_state == PIZZA || + dc->anim_state == PIZZA_IN || + dc->anim_state == PIZZA_OUT); + + codeword_p = (dc->anim_state == CODEWORD || + dc->anim_state == CODEWORD_IN || + dc->anim_state == CODEWORD_OUT || + dc->anim_state == CODEWORD_BLANK); - if (wire) + glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); + + glPushMatrix (); + glRotatef(current_device_rotation(), 0, 0, 1); + { + GLfloat scale = 1.8; + glScalef(scale, scale, scale); + + glColor3f(dc->color[0], dc->color[1], dc->color[2]); + + + /* Draw frame before trackball rotation */ + if (! codeword_p) { - if (dc->pizza_p) - glCallList (dc->pizza_list_wire); + GLfloat p = (dc->frame_spinner.position_eased >= 0 + ? dc->frame_spinner.position_eased + : -dc->frame_spinner.position_eased); + GLfloat size = (p > 0.5 ? 1-p : p); + scale = 1 + (size * 10); + glPushMatrix(); + /* gltrackball_rotate (dc->trackball); */ + glRotatef(90, 1, 0, 0); + glRotatef(90, 0, 0, 1); + + glScalef (1, scale, scale); + if (wire) + { + glDisable (GL_LIGHTING); + glCallList (dc->frame_list_wire); + mi->polygon_count += dc->polys[6]; + } + else if (dc->wire_overlay != 0) + { + glCallList (dc->frame_list); + glDisable (GL_LIGHTING); + glColor3fv (dc->color); + glCallList (dc->frame_list_wire); + mi->polygon_count += dc->polys[6]; + if (!wire) glEnable (GL_LIGHTING); + } else - glCallList (dc->helix_list_wire); - mi->polygon_count += dc->polys[1]; + { + glCallList (dc->frame_list); + mi->polygon_count += dc->polys[5]; + } + glPopMatrix(); } - else if (dc->wire_overlay != 0) + + gltrackball_rotate (dc->trackball); + + glRotatef(90, 1, 0, 0); + glRotatef(90, 0, 0, 1); + + if (! codeword_p) { - if (dc->pizza_p) - glCallList (dc->pizza_list_facetted); - else - glCallList (dc->helix_list_facetted); + glRotatef (360 * dc->scene_spinnerx.position_eased, 0, 1, 0); + glRotatef (360 * dc->scene_spinnery.position_eased, 0, 0, 1); + + glPushMatrix(); + + glRotatef (360 * dc->gasket_spinnerx.position_eased, 0, 1, 0); + glRotatef (360 * dc->gasket_spinnery.position_eased, 0, 0, 1); + glRotatef (360 * dc->gasket_spinnerz.position_eased, 1, 0, 0); - glDisable (GL_LIGHTING); + memcpy (gcolor, dc->color, sizeof (dc->color)); + if (dc->wire_overlay != 0) + { + gcolor[0] = gcolor[1] = gcolor[2] = 0; + specular[0] = specular[1] = specular[2] = 0; + shininess = 0; + } + glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, gcolor); + glMaterialfv (GL_FRONT_AND_BACK, GL_SPECULAR, specular); + glMaterialf (GL_FRONT_AND_BACK, GL_SHININESS, shininess); + + if (wire) + { + glDisable (GL_LIGHTING); + glCallList (dc->gasket_list_wire); + mi->polygon_count += dc->polys[4]; + } + else if (dc->wire_overlay != 0) + { + glCallList (dc->gasket_list); + glDisable (GL_LIGHTING); + glColor3fv (dc->color); + glCallList (dc->gasket_list_wire); + mi->polygon_count += dc->polys[4]; + if (!wire) glEnable (GL_LIGHTING); + glMaterialfv (GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE, gcolor); + } + else + { + glCallList (dc->gasket_list); + mi->polygon_count += dc->polys[3]; + } + glPopMatrix(); - if (dc->pizza_p) - glCallList (dc->pizza_list_wire); + if (pizza_p) + { + glRotatef (360 * dc->pizza_spinnery.position_eased, 1, 0, 0); + glRotatef (360 * dc->pizza_spinnerz.position_eased, 0, 0, 1); + } else - glCallList (dc->helix_list_wire); + { + glRotatef (360 * dc->helix_spinnerz.position_eased, 0, 0, 1); + } + + scale = ((dc->anim_state == PIZZA_IN || dc->anim_state == HELIX_IN) + ? dc->anim_ratio + : ((dc->anim_state == PIZZA_OUT || dc->anim_state == HELIX_OUT) + ? 1.0 - dc->anim_ratio + : 1.0)); + if (scale <= 0) scale = 0.001; + glScalef (scale, scale, scale); + + if (wire) + { + glDisable (GL_LIGHTING); + if (pizza_p) + glCallList (dc->pizza_list_wire); + else + glCallList (dc->helix_list_wire); + mi->polygon_count += dc->polys[1]; + } + else if (dc->wire_overlay != 0) + { + if (pizza_p) + glCallList (dc->pizza_list_facetted); + else + glCallList (dc->helix_list_facetted); + + glDisable (GL_LIGHTING); + glColor3fv (dc->color); + + if (pizza_p) + glCallList (dc->pizza_list_wire); + else + glCallList (dc->helix_list_wire); - mi->polygon_count += dc->polys[2]; - if (!wire) glEnable (GL_LIGHTING); + mi->polygon_count += dc->polys[2]; + if (!wire) glEnable (GL_LIGHTING); + } + else + { + if (pizza_p) + glCallList (dc->pizza_list); + else + glCallList (dc->helix_list); + mi->polygon_count += dc->polys[0]; + } } - else + else /* codeword_p */ { - if (dc->pizza_p) - glCallList (dc->pizza_list); - else - glCallList (dc->helix_list); - mi->polygon_count += dc->polys[0]; +# if 0 + double max = 70; /* face front */ + double x, y, z; + get_position (dc->scene_rot, &x, &y, &z, !dc->button_down_p); + glRotatef (max/2 - x*max, 0, 0, 1); + glRotatef (max/2 - y*max, 0, 1, 0); + /* glRotatef (max/2 - z*max, 1, 0, 0); */ +# else + glRotatef (360 * dc->scene_spinnerx.position_eased, 0, 1, 0); + glRotatef (360 * dc->scene_spinnery.position_eased, 0, 0, 1); +# endif + + glClearColor (dc->codeword_bg[0], + dc->codeword_bg[1], + dc->codeword_bg[2], + dc->codeword_bg[3]); + mi->polygon_count += draw_codeword_path (mi); } } glPopMatrix(); @@ -2263,6 +3531,6 @@ draw_logo (ModeInfo *mi) glXSwapBuffers(dpy, window); } -XSCREENSAVER_MODULE_2 ("DNAlogo", dnalogo, logo) +XSCREENSAVER_MODULE_2 ("DNALogo", dnalogo, logo) #endif /* USE_GL */