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-rw-r--r--hacks/glx/energystream.c535
1 files changed, 0 insertions, 535 deletions
diff --git a/hacks/glx/energystream.c b/hacks/glx/energystream.c
deleted file mode 100644
index b20abb7..0000000
--- a/hacks/glx/energystream.c
+++ /dev/null
@@ -1,535 +0,0 @@
-/* energystream, Copyright (c) 2016 Eugene Sandulenko <sev@scummvm.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.
- *
- * Based on Public Domain code by konrad "yoghurt" zagorowicz
- * for Tesla demo by Sunflower (http://www.pouet.net/prod.php?which=33)
- */
-
-#define DEFAULTS "*delay: 30000 \n" \
- "*count: 30 \n" \
- "*showFPS: False \n" \
- "*wireframe: False \n" \
-
-# define release_stream 0
-
-#include "xlockmore.h"
-#include "gltrackball.h"
-#include "rotator.h"
-#include <ctype.h>
-
-#ifdef USE_GL /* whole file */
-
-static float change_time = 0;
-static float change_time1 = 25;
-static float change_time2 = 40;
-static float change_time3 = 60;
-
-#define DEF_STREAMS "16"
-
-#include <sys/time.h>
-#include <time.h>
-
-typedef struct timeval streamtime;
-
-#define GETSECS(t) ((t).tv_sec)
-#define GETMSECS(t) ((t).tv_usec/1000)
-
-#define DEF_SPIN "False"
-#define DEF_WANDER "False"
-#define DEF_SPEED "1.0"
-
-
-typedef struct {
- float x, y, z;
-} Vector;
-
-typedef struct {
- Vector *flares;
- int num_flares;
- GLuint flare_tex;
- float speed;
-} flare_stream;
-
-typedef struct {
- GLXContext *glx_context;
- rotator *rot;
- trackball_state *trackball;
- Bool button_down_p;
-
- time_t start_time;
-
- int num_streams;
- flare_stream *streams;
-
-} stream_configuration;
-
-static stream_configuration *ess = NULL;
-
-static int num_streams;
-static Bool do_spin;
-static GLfloat global_speed;
-static Bool do_wander;
-
-static XrmOptionDescRec opts[] = {
- { "-streams", ".streams", XrmoptionSepArg, 0 },
- { "-spin", ".spin", XrmoptionNoArg, "True" },
- { "+spin", ".spin", XrmoptionNoArg, "False" },
- { "-speed", ".speed", XrmoptionSepArg, 0 },
- { "-wander", ".wander", XrmoptionNoArg, "True" },
- { "+wander", ".wander", XrmoptionNoArg, "False" }
-};
-
-static argtype vars[] = {
- {&num_streams, "streams", "Streams", DEF_STREAMS, t_Int},
- {&do_spin, "spin", "Spin", DEF_SPIN, t_Bool},
- {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
- {&global_speed, "speed", "Speed", DEF_SPEED, t_Float},
-};
-
-ENTRYPOINT ModeSpecOpt stream_opts = {countof(opts), opts, countof(vars), vars, NULL};
-
-static void gettime(streamtime *t)
-{
-#ifdef GETTIMEOFDAY_TWO_ARGS
- struct timezone tzp;
- gettimeofday(t, &tzp);
-#else /* !GETTIMEOFDAY_TWO_ARGS */
- gettimeofday(t);
-#endif /* !GETTIMEOFDAY_TWO_ARGS */
-}
-
-
-/* Window management, etc
- */
-ENTRYPOINT void
-reshape_stream (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);
-
- glClear (GL_COLOR_BUFFER_BIT);
-}
-
-
-ENTRYPOINT Bool
-stream_handle_event (ModeInfo *mi, XEvent *event)
-{
- stream_configuration *es = &ess[MI_SCREEN(mi)];
-
- if (gltrackball_event_handler (event, es->trackball,
- MI_WIDTH (mi), MI_HEIGHT (mi),
- &es->button_down_p))
- return True;
-
- return False;
-}
-
-#define TEX_WIDTH 256
-#define TEX_HEIGHT 256
-#define COEFF 0.2
-
-static GLuint gen_texture (void)
-{
- int x, y, i;
- float color;
- GLuint tex;
-
- unsigned char *texture = (unsigned char *)calloc (TEX_WIDTH * TEX_HEIGHT, 4);
- unsigned char *ptr = texture;
-
- float tint[3];
- for (i = 0; i < 3; i++)
- tint[i] = 1.0 * random() / RAND_MAX;
-
- for (y = 0; y < TEX_HEIGHT; y++) {
- for (x = 0; x < TEX_WIDTH; x++) {
- color = 255 - sqrt((x - TEX_WIDTH / 2) * (x - TEX_WIDTH / 2) / COEFF
- + (y - TEX_HEIGHT / 2) * (y - TEX_HEIGHT / 2) / COEFF);
-
- if (color < 0)
- color = 0;
-
- for (i = 0; i < 3; i++)
- ptr[i] = (unsigned char)(color * tint[i]);
- ptr[3] = color ? 255 : 0;
-
- ptr += 4;
- }
- }
-
- glGenTextures (1, &tex);
-#ifdef HAVE_GLBINDTEXTURE
- glBindTexture (GL_TEXTURE_2D, tex);
-#endif /* HAVE_GLBINDTEXTURE */
- glPixelStorei (GL_UNPACK_ALIGNMENT, 4);
- clear_gl_error ();
- glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, TEX_WIDTH, TEX_HEIGHT,
- 0, GL_RGBA, GL_UNSIGNED_BYTE, texture);
- check_gl_error ("texture");
-
- /* Texture parameters, LINEAR scaling for better texture quality */
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-
- free (texture);
-
- return tex;
-}
-
-static inline void vector_copy (Vector *a, Vector *b)
-{
- a->x = b->x;
- a->y = b->y;
- a->z = b->z;
-}
-
-/* a += b */
-static inline void vector_add (Vector *a, Vector *b)
-{
- a->x += b->x;
- a->y += b->y;
- a->z += b->z;
-}
-
-/* a -= b */
-static inline void vector_sub (Vector *a, Vector *b)
-{
- a->x -= b->x;
- a->y -= b->y;
- a->z -= b->z;
-}
-
-static void init_flare_stream (flare_stream *s, int num_flares, float bx, float by, float bz, float speed)
-{
- int i;
-
- s->flares = (Vector *) calloc (num_flares, sizeof (Vector));
- s->num_flares = num_flares;
- s->flare_tex = gen_texture();
- s->speed = speed;
-
- for (i = 0; i != s->num_flares; i++)
- {
- s->flares[i].x = -800.0f * random() / RAND_MAX - 1150 + bx;
- s->flares[i].y = 10.0f * random() / RAND_MAX - 20 + by;
- s->flares[i].z = 10.0f * random() / RAND_MAX - 20 + bz;
- }
-}
-
-static void render_flare_stream (flare_stream *s, float cur_time, Vector *vx, Vector *vy, float alpha)
-{
- float fMultipler = 1;
- int i;
-
- if (s->flare_tex == -1)
- return;
- if (!s->num_flares)
- return;
-
- if (cur_time < change_time)
- return;
-
- cur_time -= change_time;
-
- glColor4f (1.0, 1, 1, alpha);
-#ifdef HAVE_GLBINDTEXTURE
- glBindTexture (GL_TEXTURE_2D, s->flare_tex);
-#endif
-
- glBegin (GL_QUADS);
-
- if (cur_time + change_time > change_time1)
- {
- if (cur_time + change_time > change_time2)
- {
- fMultipler = 2.5;
- }
- else
- fMultipler = 2;
- }
-
- for (i = 0; i != s->num_flares; i++)
- {
- Vector flare_pos;
- Vector cc;
-
- flare_pos.x = fmod (s->flares[i].x + cur_time * s->speed * fMultipler, 800) - 400;
- flare_pos.y = s->flares[i].y + 2 * sin (cur_time * 7 + s->flares[i].x);
- flare_pos.z = s->flares[i].z + 2 * cos (cur_time * 7 + i * 3.14);
-
- glTexCoord2f (0, 0);
- vector_copy (&cc, &flare_pos);
- vector_sub (&cc, vx);
- vector_add (&cc, vy);
- glVertex3fv ((float *)&cc);
-
- glTexCoord2f ( 1, 0 );
- vector_copy (&cc, &flare_pos);
- vector_add (&cc, vx);
- vector_add (&cc, vy);
- glVertex3fv ((float *)&cc);
-
- glTexCoord2f ( 1, 1 );
- vector_copy (&cc, &flare_pos);
- vector_add (&cc, vx);
- vector_sub (&cc, vy);
- glVertex3fv ((float *)&cc);
-
- glTexCoord2f ( 0, 1 );
- vector_copy (&cc, &flare_pos);
- vector_sub (&cc, vx);
- vector_sub (&cc, vy);
- glVertex3fv ((float *)&cc);
- }
-
- glEnd ();
-}
-
-ENTRYPOINT void
-init_stream (ModeInfo *mi)
-{
- stream_configuration *es;
- streamtime current_time;
-
- MI_INIT (mi, ess);
-
- es = &ess[MI_SCREEN(mi)];
-
- es->glx_context = init_GL (mi);
-
- reshape_stream (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
-
- gettime (&current_time);
- es->start_time = GETSECS(current_time) * 1000 + GETMSECS(current_time);
-
- es->num_streams = num_streams;
-
- es->streams = (flare_stream *) calloc (es->num_streams, sizeof(flare_stream));
-
- init_flare_stream (&es->streams[0], 150, 0, 50, 0, 300);
- init_flare_stream (&es->streams[1], 150, 0, 0, 0, 150);
- init_flare_stream (&es->streams[2], 150, 0, 90, 60, 250);
- init_flare_stream (&es->streams[3], 150, 0, -100, 30, 160);
- init_flare_stream (&es->streams[4], 150, 0, 50, -100, 340);
- init_flare_stream (&es->streams[5], 150, 0, -50, 50, 270 );
- init_flare_stream (&es->streams[6], 150, 0, 100, 50, 180);
- init_flare_stream (&es->streams[7], 150, 0, -30, 90, 130);
-
- init_flare_stream (&es->streams[8], 150, 0, 150, 10, 200);
- init_flare_stream (&es->streams[9], 150, 0, 100, -100, 210);
- init_flare_stream (&es->streams[10], 150, 0, 190, 160, 220);
- init_flare_stream (&es->streams[11], 150, 0, -200, 130, 230);
- init_flare_stream (&es->streams[12], 150, 0, 150, -200, 240);
- init_flare_stream (&es->streams[13], 150, 0, -150, 250, 160);
- init_flare_stream (&es->streams[14], 150, 0, 200, 150, 230);
- init_flare_stream (&es->streams[15], 150, 0, -130, 190, 250);
-
- {
- double spin_speed = 0.5 * global_speed;
- double wander_speed = 0.02 * global_speed;
- double spin_accel = 1.1;
-
- es->rot = make_rotator (do_spin ? spin_speed : 0,
- do_spin ? spin_speed : 0,
- do_spin ? spin_speed : 0,
- spin_accel,
- do_wander ? wander_speed : 0,
- True);
- es->trackball = gltrackball_init (True);
- }
-}
-
-ENTRYPOINT void
-free_stream (ModeInfo * mi)
-{
- stream_configuration *es = &ess[MI_SCREEN(mi)];
- int i;
-
- if (!es->glx_context) return;
- glXMakeCurrent (MI_DISPLAY(mi), MI_WINDOW(mi), *es->glx_context);
-
- if (es->trackball) gltrackball_free (es->trackball);
- if (es->rot) free_rotator (es->rot);
-
- for (i = 0; i < es->num_streams; i++) {
- free (es->streams[i].flares);
- glDeleteTextures (1, &es->streams[i].flare_tex);
- }
-
- if (es->streams) free (es->streams);
-
-}
-
-
-static void inverse_matrix (float m[16]) {
- double a,b,c,d,e,f,g,h,i,j,k,l;
- register double dW;
-
- a = m[ 0]; b = m[ 1]; c = m[ 2];
- d = m[ 4]; e = m[ 5]; f = m[ 6];
- g = m[ 8]; h = m[ 9]; i = m[10];
- j = m[12]; k = m[13]; l = m[14];
-
- dW = 1.0 / (a * (e * i - f * h)
- - (b * (d * i - f * g)
- + c * (e * g - d * h)));
-
- m[ 0]= (float)((e * i - f * h) * dW);
- m[ 1]= (float)((c * h - b * i) * dW);
- m[ 2]= (float)((b * f - c * e) * dW);
-
- m[ 4]= (float)((f * g - d * i) * dW);
- m[ 5]= (float)((a * i - c * g) * dW);
- m[ 6]= (float)((c * d - a * f) * dW);
-
- m[ 8]= (float)((d * h - e * g) * dW);
- m[ 9]= (float)((b * g - a * h) * dW);
- m[10]= (float)((a * e - b * d) * dW);
-
- m[12]= (float)((e * (g * l - i * j)
- + f * (h * j - g * k)
- - d * (h * l - i * k)) * dW);
- m[13]= (float)((a * (h * l - i * k)
- + b * (i * j - g * l)
- + c * (g * k - h * j)) * dW);
- m[14]= (float)((b * (d * l - f * j)
- + c * (e * j - d * k)
- - a * (e * l - f * k)) * dW);
-}
-
-ENTRYPOINT void
-draw_stream (ModeInfo *mi)
-{
- stream_configuration *es = &ess[MI_SCREEN(mi)];
- Display *dpy = MI_DISPLAY(mi);
- Window window = MI_WINDOW(mi);
- streamtime current_time;
- float cur_time;
- int i;
- float alpha = 1.0;
- Vector vx;
- Vector vy;
- GLfloat m[4*4];
-
- if (!es->glx_context)
- return;
-
- gettime (&current_time);
-
- cur_time = (float)(GETSECS(current_time) * 1000 + GETMSECS(current_time) - es->start_time) / 1000.0;
- cur_time *= global_speed;
-
- glXMakeCurrent (MI_DISPLAY(mi), MI_WINDOW(mi), *es->glx_context);
-
- glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glMatrixMode (GL_PROJECTION);
- glLoadIdentity ();
- glFrustum (-.6f, .6f, -.45f, .45f, 1, 1000);
-
- glMatrixMode (GL_MODELVIEW);
- glLoadIdentity ();
-
- glEnable (GL_LIGHTING);
- glEnable (GL_TEXTURE_2D);
- glEnable (GL_BLEND);
- glBlendFunc (GL_SRC_ALPHA, GL_ONE);
- glDisable (GL_CULL_FACE);
- glDisable (GL_DEPTH_TEST);
- glDepthMask (0);
-
- glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ADD);
-
- glTranslatef (0, 0, -300);
- glRotatef (cur_time * 30, 1, 0, 0);
- glRotatef (30 * sin(cur_time / 3) + 10, 0, 0, 1);
-
- {
- double x, y, z;
- get_position (es->rot, &x, &y, &z, !es->button_down_p);
- glTranslatef((x - 0.5) * 8,
- (y - 0.5) * 8,
- (z - 0.5) * 15);
-
- gltrackball_rotate (es->trackball);
-
- get_rotation (es->rot, &x, &y, &z, !es->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);
- }
-
- if (cur_time > change_time1)
- {
- if (cur_time > change_time2)
- {
- glRotatef (90, 0, 1, 0);
-
- if (cur_time > change_time3)
- es->start_time = GETSECS(current_time) * 1000 + GETMSECS(current_time) - 5000;
- }
- else
- {
- glRotatef (180, 0, 1, 0);
- }
- }
-
- glEnable ( GL_FOG);
- glFogf (GL_FOG_START, 200);
- glFogf (GL_FOG_END, 500);
- glFogf (GL_FOG_MODE, GL_LINEAR);
-
- glGetFloatv (GL_MODELVIEW_MATRIX, m);
-
- inverse_matrix (m);
-
- vx.x = m[0] * 10;
- vx.y = m[1] * 10;
- vx.z = m[2] * 10;
-
- vy.x = m[4] * 10;
- vy.y = m[5] * 10;
- vy.z = m[6] * 10;
-
- mi->polygon_count = 0;
-
- for (i = 0; i != es->num_streams; i++)
- {
- mi->polygon_count += es->streams[i].num_flares;
- render_flare_stream (&es->streams[i], cur_time, &vx, &vy, alpha);
- }
-
- glDisable (GL_TEXTURE_2D);
- glDisable (GL_LIGHTING);
- glDisable (GL_FOG);
- glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-
- if (mi->fps_p) do_fps (mi);
- glFinish();
-
- glXSwapBuffers (dpy, window);
-}
-
-XSCREENSAVER_MODULE_2("EnergyStream", energystream, stream)
-
-#endif /* USE_GL */
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