/* atlantis --- Shows moving 3D sea animals */
#if 0
static const char sccsid[] = "@(#)atlantis.c 5.08 2003/04/09 xlockmore";
#endif
/* Copyright (c) E. Lassauge, 1998. */
/*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation.
*
* This file is provided AS IS with no warranties of any kind. The author
* shall have no liability with respect to the infringement of copyrights,
* trade secrets or any patents by this file or any part thereof. In no
* event will the author be liable for any lost revenue or profits or
* other special, indirect and consequential damages.
*
* The original code for this mode was written by Mark J. Kilgard
* as a demo for openGL programming.
*
* Porting it to xlock was possible by comparing the original Mesa's morph3d
* demo with it's ported version to xlock, so thanks for Marcelo F. Vianna
* (look at morph3d.c) for his indirect help.
*
* Thanks goes also to Brian Paul for making it possible and inexpensive
* to use OpenGL at home.
*
* My e-mail address is lassauge@users.sourceforge.net
*
* Eric Lassauge (May-13-1998)
*
* REVISION HISTORY:
*
* Jamie Zawinski, 2-Apr-01: - The fishies were inside out! The back faces
* were being drawn, not the front faces.
* - Added a texture to simulate light from the
* surface, like in the SGI version.
*
* David A. Bagley - 98/06/17 : Add whalespeed option. Global options to
* initialize local variables are now:
* XLock.atlantis.cycles: 100 ! SharkSpeed
* XLock.atlantis.batchcount: 4 ! SharkNum
* XLock.atlantis.whalespeed: 250 ! WhaleSpeed
* XLock.atlantis.size: 6000 ! SharkSize
* Add random direction for whales/dolphins
*
* E.Lassauge - 98/06/16: Use the following global options to initialize
* local variables :
* XLock.atlantis.delay: 100 ! SharkSpeed
* XLock.atlantis.batchcount: 4 ! SharkNum
* XLock.atlantis.cycles: 250 ! WhaleSpeed
* XLock.atlantis.size: 6000 ! SharkSize
* Add support for -/+ wireframe (t'was so easy to do!)
*
* TODO :
* - better handling of sizes and speeds
* - test standalone and module modes
* - purify it (!)
*/
/* Copyright (c) Mark J. Kilgard, 1994. */
/**
* (c) Copyright 1993, 1994, Silicon Graphics, Inc.
* ALL RIGHTS RESERVED
* Permission to use, copy, modify, and distribute this software for
* any purpose and without fee is hereby granted, provided that the above
* copyright notice appear in all copies and that both the copyright notice
* and this permission notice appear in supporting documentation, and that
* the name of Silicon Graphics, Inc. not be used in advertising
* or publicity pertaining to distribution of the software without specific,
* written prior permission.
*
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
*
* US Government Users Restricted Rights
* Use, duplication, or disclosure by the Government is subject to
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
* clause at DFARS 252.227-7013 and/or in similar or successor
* clauses in the FAR or the DOD or NASA FAR Supplement.
* Unpublished-- rights reserved under the copyright laws of the
* United States. Contractor/manufacturer is Silicon Graphics,
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
*
* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
*/
#define DEF_TEXTURE "True"
#define DEF_GRADIENT "True"
#define DEF_WHALESPEED "250"
#ifdef STANDALONE
# define DEFAULTS "*delay: 25000 \n" \
"*count: 4 \n" \
"*showFPS: False \n" \
"*cycles: 100 \n" \
"*size: 6000 \n" \
"*wireframe: False \n"
# define release_atlantis 0
# define atlantis_handle_event xlockmore_no_events
# include "xlockmore.h" /* from the xscreensaver distribution */
#else /* !STANDALONE */
# include "xlock.h" /* from the xlockmore distribution */
# include "vis.h"
#endif /* !STANDALONE */
#ifdef USE_GL
#include "atlantis.h"
static int whalespeed;
static int do_texture;
static int do_gradient;
static XrmOptionDescRec opts[] =
{
{"-whalespeed", ".atlantis.whalespeed", XrmoptionSepArg, 0},
{"-texture", ".atlantis.texture", XrmoptionNoArg, "true"},
{"+texture", ".atlantis.texture", XrmoptionNoArg, "false"},
{"-gradient", ".atlantis.gradient", XrmoptionNoArg, "true"},
{"+gradient", ".atlantis.gradient", XrmoptionNoArg, "false"},
};
static argtype vars[] =
{
{&whalespeed, "whalespeed", "WhaleSpeed", DEF_WHALESPEED, t_Int},
{&do_texture, "texture", "Texture", DEF_TEXTURE, t_Bool},
{&do_gradient, "gradient", "Gradient", DEF_GRADIENT, t_Bool},
};
static OptionStruct desc[] =
{
{"-whalespeed num", "speed of whales and the dolphin"},
{"-texture", "whether to introduce water-like distortion"},
{"-gradient", "whether to introduce gradient-filled background"},
};
ENTRYPOINT ModeSpecOpt atlantis_opts =
{sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
#ifdef USE_MODULES
ModStruct atlantis_description =
{"atlantis", "init_atlantis", "draw_atlantis", NULL,
"refresh_atlantis", "change_atlantis", "free_atlantis", &atlantis_opts,
1000, NUM_SHARKS, SHARKSPEED, SHARKSIZE, 64, 1.0, "",
"Shows moving sharks/whales/dolphin", 0, NULL};
#endif
static atlantisstruct *atlantis = NULL;
#include "ximage-loader.h"
#include "images/gen/sea-texture_png.h"
static void
parse_image_data(ModeInfo *mi)
{
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
ap->texture = image_data_to_ximage (mi->dpy, mi->xgwa.visual,
sea_texture_png,
sizeof(sea_texture_png));
}
static void
InitFishs(atlantisstruct * ap)
{
int i;
for (i = 0; i < ap->num_sharks; i++) {
ap->sharks[i].x = 70000.0 + NRAND(ap->sharksize);
ap->sharks[i].y = NRAND(ap->sharksize);
ap->sharks[i].z = NRAND(ap->sharksize);
ap->sharks[i].psi = NRAND(360) - 180.0;
ap->sharks[i].v = 1.0;
}
/* Random whale direction */
ap->whaledir = LRAND() & 1;
ap->dolph.x = 30000.0;
ap->dolph.y = 0.0;
ap->dolph.z = (float) (ap->sharksize);
ap->dolph.psi = (ap->whaledir) ? 90.0 : -90.0;
ap->dolph.theta = 0.0;
ap->dolph.v = 6.0;
ap->momWhale.x = 70000.0;
ap->momWhale.y = 0.0;
ap->momWhale.z = 0.0;
ap->momWhale.psi = (ap->whaledir) ? 90.0 : -90.0;
ap->momWhale.theta = 0.0;
ap->momWhale.v = 3.0;
ap->babyWhale.x = 60000.0;
ap->babyWhale.y = -2000.0;
ap->babyWhale.z = -2000.0;
ap->babyWhale.psi = (ap->whaledir) ? 90.0 : -90.0;
ap->babyWhale.theta = 0.0;
ap->babyWhale.v = 3.0;
}
static void
Init(ModeInfo *mi)
{
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
static const float ambient[] = {0.1, 0.1, 0.1, 1.0};
static const float diffuse[] = {1.0, 1.0, 1.0, 1.0};
static const float position[] = {0.0, 1.0, 0.0, 0.0};
static const float mat_shininess[] = {90.0};
static const float mat_specular[] = {0.8, 0.8, 0.8, 1.0};
static const float mat_diffuse[] = {0.46, 0.66, 0.795, 1.0};
static const float mat_ambient[] = {0.0, 0.1, 0.2, 1.0};
static const float lmodel_ambient[] = {0.4, 0.4, 0.4, 1.0};
static const float lmodel_localviewer[] = {0.0};
float fblue = 0.0, fgreen;
glFrontFace(GL_CCW);
if (ap->wire)
{
glDisable(GL_DEPTH_TEST);
glDisable(GL_CULL_FACE);
glDisable(GL_LIGHTING);
glDisable(GL_NORMALIZE);
}
else
{
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glEnable(GL_NORMALIZE);
glShadeModel(GL_SMOOTH);
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
glLightfv(GL_LIGHT0, GL_POSITION, position);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, lmodel_localviewer);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, mat_shininess);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, mat_specular);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, mat_diffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, mat_ambient);
}
if (ap->wire || !do_texture)
{
glDisable(GL_TEXTURE_2D);
}
else
{
GLfloat scale = 0.0005;
if (!ap->texture)
parse_image_data (mi);
clear_gl_error();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
ap->texture->width, ap->texture->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE,
ap->texture->data);
check_gl_error("texture");
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_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
# ifndef HAVE_JWZGLES
{
GLfloat s_plane[] = { 1, 0, 0, 0 };
GLfloat t_plane[] = { 0, 0, 1, 0 };
glTexGeni (GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
glTexGeni (GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
glTexGenfv(GL_S, GL_EYE_PLANE, s_plane);
glTexGenfv(GL_T, GL_EYE_PLANE, t_plane);
glEnable(GL_TEXTURE_GEN_S);
glEnable(GL_TEXTURE_GEN_T);
}
# endif
glEnable(GL_TEXTURE_2D);
glMatrixMode(GL_TEXTURE);
glLoadIdentity();
glScalef(scale, scale, 1);
glMatrixMode(GL_MODELVIEW);
if (ap->texture) XDestroyImage (ap->texture);
ap->texture = 0;
}
InitFishs(ap);
/* Add a little randomness */
fblue = ((float) (NRAND(30)) / 100.0) + 0.70;
fgreen = fblue * 0.56;
glClearColor(0.0, fgreen, fblue, 1.0);
}
ENTRYPOINT void
reshape_atlantis(ModeInfo * mi, int width, int height)
{
double h = (GLfloat) height / (GLfloat) width;
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
int y = 0;
if (width > height * 5) { /* tiny window: show middle */
height = width * 9/16;
y = -height/2;
h = height / (GLfloat) width;
}
glViewport(0, y, ap->WinW = (GLint) width, ap->WinH = (GLint) height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(400.0, 1/h, 1.0, 2000000.0);
glMatrixMode(GL_MODELVIEW);
}
/* Fill the background with a gradient -- thanks to
Phil Carrig <pod@internode.on.net> for figuring out
how to do this more efficiently!
*/
static void
clear_tank (atlantisstruct * ap)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (do_gradient && !ap->wire)
{
GLfloat top[4] = { 0.00, 0.40, 0.70, };
GLfloat bot[4] = { 0.00, 0.05, 0.18, };
glMatrixMode(GL_PROJECTION);
glPushMatrix();
{
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
{
glLoadIdentity();
/* glRotatef(current_device_rotation(), 0, 0, 1); */
# ifndef HAVE_JWZGLES
glShadeModel (GL_SMOOTH);
# endif
glDisable (GL_LIGHTING);
glBegin (GL_QUADS);
glColor3fv (bot);
glVertex3f (-1, -1, 1); glVertex3f ( 1, -1, 1);
glColor3fv (top);
glVertex3f ( 1, 1, 1); glVertex3f (-1, 1, 1);
glEnd();
glEnable (GL_LIGHTING);
/* Need to reset this because jwzgles conflates color and material */
glColor3f (0.0, 0.1, 0.2);
}
glPopMatrix();
}
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
}
}
static void
Animate(atlantisstruct * ap)
{
int i;
for (i = 0; i < ap->num_sharks; i++) {
SharkPilot(&(ap->sharks[i]), ap->sharkspeed);
SharkMiss(ap, i);
}
WhalePilot(&(ap->dolph), ap->whalespeed, ap->whaledir);
ap->dolph.phi++;
WhalePilot(&(ap->momWhale), ap->whalespeed, ap->whaledir);
ap->momWhale.phi++;
WhalePilot(&(ap->babyWhale), ap->whalespeed, ap->whaledir);
ap->babyWhale.phi++;
}
static void
AllDisplay(atlantisstruct * ap)
{
int i;
clear_tank(ap);
for (i = 0; i < ap->num_sharks; i++) {
glPushMatrix();
FishTransform(&(ap->sharks[i]));
DrawShark(&(ap->sharks[i]), ap->wire);
glPopMatrix();
}
glPushMatrix();
FishTransform(&(ap->dolph));
DrawDolphin(&(ap->dolph), ap->wire);
glPopMatrix();
glPushMatrix();
FishTransform(&(ap->momWhale));
DrawWhale(&(ap->momWhale), ap->wire);
glPopMatrix();
glPushMatrix();
FishTransform(&(ap->babyWhale));
glScalef(0.45, 0.45, 0.3);
DrawWhale(&(ap->babyWhale), ap->wire);
glPopMatrix();
}
/*
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
* Xlock hooks.
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
/*
*-----------------------------------------------------------------------------
* Initialize atlantis. Called each time the window changes.
*-----------------------------------------------------------------------------
*/
ENTRYPOINT void
init_atlantis(ModeInfo * mi)
{
int screen = MI_SCREEN(mi);
atlantisstruct *ap;
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
MI_INIT(mi, atlantis);
ap = &atlantis[screen];
ap->num_sharks = MI_COUNT(mi);
if (ap->sharks == NULL) {
if ((ap->sharks = (fishRec *) calloc(ap->num_sharks,
sizeof (fishRec))) == NULL) {
/* free everything up to now */
free(atlantis);
atlantis = NULL;
return;
}
}
ap->sharkspeed = MI_CYCLES(mi); /* has influence on the "width"
of the movement */
ap->sharksize = MI_SIZE(mi); /* has influence on the "distance"
of the sharks */
ap->whalespeed = whalespeed;
ap->wire = MI_IS_WIREFRAME(mi);
if (MI_IS_DEBUG(mi)) {
(void) fprintf(stderr,
"%s:\n\tnum_sharks=%d\n\tsharkspeed=%.1f\n\tsharksize=%d\n\twhalespeed=%.1f\n\twireframe=%s\n",
MI_NAME(mi),
ap->num_sharks,
ap->sharkspeed,
ap->sharksize,
ap->whalespeed,
ap->wire ? "yes" : "no"
);
}
if ((ap->glx_context = init_GL(mi)) != NULL) {
reshape_atlantis(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
glDrawBuffer(GL_BACK);
Init(mi);
AllDisplay(ap);
glXSwapBuffers(display, window);
} else {
MI_CLEARWINDOW(mi);
}
}
/*
*-----------------------------------------------------------------------------
* Called by the mainline code periodically to update the display.
*-----------------------------------------------------------------------------
*/
ENTRYPOINT void
draw_atlantis(ModeInfo * mi)
{
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
MI_IS_DRAWN(mi) = True;
if (!ap->glx_context)
return;
glXMakeCurrent(display, window, *ap->glx_context);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(current_device_rotation(), 0, 0, 1);
AllDisplay(ap);
Animate(ap);
glPopMatrix();
if (mi->fps_p) do_fps (mi);
glXSwapBuffers(display, window);
}
/*
*-----------------------------------------------------------------------------
* The display is being taken away from us. Free up malloc'ed
* memory and X resources that we've alloc'ed.
*-----------------------------------------------------------------------------
*/
ENTRYPOINT void
free_atlantis(ModeInfo * mi)
{
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
if (!ap->glx_context) return;
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *ap->glx_context);
if (ap->sharks) free(ap->sharks);
}
#ifndef STANDALONE
ENTRYPOINT void
refresh_atlantis(ModeInfo * mi)
{
}
ENTRYPOINT void
change_atlantis(ModeInfo * mi)
{
atlantisstruct *ap = &atlantis[MI_SCREEN(mi)];
if (!ap->glx_context)
return;
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *ap->glx_context);
Init(mi);
}
#endif /* !STANDALONE */
XSCREENSAVER_MODULE ("Atlantis", atlantis)
#endif /* USE_GL */
