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moved files to trunk directory

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git-svn-id: svn://anubis/dwscr/trunk@83 5bef9df8-b654-44bb-925b-0ff18baa8f8c
This commit is contained in:
josh 2008-09-22 17:27:40 +00:00
parent 78092ee118
commit 68d41e9c63
26 changed files with 2184 additions and 0 deletions
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42
LoadFile/LoadFile.cc Normal file
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#include <map>
#include <string>
#include "LoadFile.h"
typedef struct {
const char * filename;
unsigned char * data;
int length;
} fileref_t;
/* The data section is generated by a perl script. The contents of the
* included file are part of this logical program unit, which is why it
* is directly included instead of compiling it separately.
*/
#include "LoadFile-gen.inc"
const static int numFiles = sizeof(LoadFileData)/sizeof(fileref_t);
static std::map< std::string, fileref_t * > * LoadFileMap = NULL;
void * LoadFile(const char * filename, unsigned int * length)
{
if (LoadFileMap == NULL)
{
LoadFileMap = new std::map< std::string, fileref_t * >();
for (int i = 0; i < numFiles; i++)
{
(*LoadFileMap)[std::string(LoadFileData[i].filename)] = &LoadFileData[i];
}
}
std::map< std::string, fileref_t * >::iterator it =
LoadFileMap->find(std::string(filename));
if (it == LoadFileMap->end())
return NULL;
*length = it->second->length;
return it->second->data;
}

2
LoadFile/LoadFile.h Normal file
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void * LoadFile(const char * filename, unsigned int * length);

17
LoadFile/Makefile Normal file
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GENLOADFILE := perl genLoadFile.pl
LOGO_PATH := ../logo
LOADFILES += dwlogo.obj
LOADFILES += dwlogo.mtl
ABSLOADFILES := $(foreach lf,$(LOADFILES),$(LOGO_PATH)/$(lf))
all: LoadFile.o
LoadFile.o: LoadFile.cc LoadFile-gen.inc
$(CXX) -c -o $@ $< $(CPPFLAGS) $(CXXFLAGS)
LoadFile-gen.inc: genLoadFile.pl $(ABSLOADFILES)
$(GENLOADFILE) --root=$(LOGO_PATH) $(LOADFILES)
clean:
-$(RM) -f *~ *.o LoadFile-gen.inc

58
LoadFile/genLoadFile.pl Executable file
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#!/usr/bin/perl
use strict;
use warnings;
use Getopt::Long;
my $root = '.';
GetOptions('root=s' => \$root);
my @fileList = @ARGV;
if ($#fileList < 0)
{
print "$0 <fileList>\n";
exit(42);
}
my %fileData;
my $index = 0;
open(OUTPUT, '>', 'LoadFile-gen.inc');
chdir($root);
foreach my $fileName (@fileList)
{
local $/;
open(FILE, '<', $fileName);
my $fileContents = <FILE>;
close(FILE);
my $length = length($fileContents);
my @fileContents = split(//, $fileContents);
my $cname = "dat$index";
print OUTPUT "\nstatic unsigned char ${cname}[] = {\n";
for (my $byteNum = 0; $byteNum <= $#fileContents; $byteNum++)
{
print OUTPUT " " if ($byteNum % 12 == 0);
printf OUTPUT ("0x%02x", ord($fileContents[$byteNum]));
print OUTPUT ", " unless ($byteNum == $#fileContents);
print OUTPUT "\n" if ($byteNum % 12 == 11);
}
print OUTPUT "\n};\n";
$index++;
$fileData{$fileName} = [$cname, $length];
}
print OUTPUT "\nfileref_t LoadFileData[] = {\n";
my @fileNames = keys(%fileData);
for (my $fileIndex = 0; $fileIndex <= $#fileNames; $fileIndex++)
{
my $fileName = $fileNames[$fileIndex];
printf OUTPUT (' {"%s", %s, %s}',
$fileName,
$fileData{$fileName}->[0],
$fileData{$fileName}->[1]);
print OUTPUT "," unless ($fileIndex == $#fileNames);
print OUTPUT "\n";
}
print OUTPUT "};\n";
close(OUTPUT);

74
Makefile Normal file
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# Author: Josh Holtrop
# DornerWorks screensaver
# set this to compile in "debug" mode
#DEBUG := 1
# set this to be in "window mode" - i.e. do not hide mouse
# cursor and grab input
#WINDOW_MODE := 1
OBJS = dwscr.o wfobj/WFObj.o LoadFile/LoadFile.o ss/ss.a
TARGET = dwscr
export CXXFLAGS := -O2 -Wall
export CPPFLAGS
ifdef DEBUG
CPPFLAGS += -DDEBUG
endif
ifdef WINDOW_MODE
CPPFLAGS += -DWINDOW_MODE
endif
ifdef WIN32
export CP := copy
export MV := rename
export CC := mingw32-gcc
export CXX := mingw32-g++
SDL_BASE := C:\apps\SDL-1.2.13
ODE_BASE := C:\apps\ode-0.9
export CPPFLAGS += -I$(SDL_BASE)\include -I$(ODE_BASE)\include -D_GNU_SOURCE=1 -Dmain=SDL_main
LDFLAGS += -L$(SDL_BASE)\lib -L$(ODE_BASE)\lib\releasedll -lopengl32 -lglu32 -lmingw32 -mwindows -lSDLmain -lSDL -lode
TARGET := $(TARGET).exe
SSNAME := dwscr.scr
INSTALLDIR := C:\WINDOWS
OBJS += displayinfo-win32.o
else
export CP := cp
export MV := mv
export CC := gcc
export CXX := g++
export AR := ar
export CPPFLAGS += `sdl-config --cflags` `ode-config --cflags`
LDFLAGS += `sdl-config --libs` `ode-config --libs` -lGL -lGLU
OBJS += displayinfo.o
endif
all: $(TARGET)
$(TARGET): $(OBJS)
$(CXX) -o $@ $(OBJS) $(LDFLAGS)
.PHONY: wfobj/WFObj.o
wfobj/WFObj.o:
$(MAKE) -C wfobj
.PHONY: LoadFile/LoadFile.o
LoadFile/LoadFile.o:
$(MAKE) -C LoadFile
.PHONY: ss/ss.a
ss/ss.a:
$(MAKE) -C ss
ifdef WIN32
.PHONY: install
install:
$(CP) $(TARGET) $(INSTALLDIR)\$(SSNAME)
endif
.PHONY: clean
clean:
$(MAKE) -C wfobj clean
$(MAKE) -C LoadFile clean
$(MAKE) -C ss clean
-$(RM) -f *~ *.o $(TARGET)

55
displayinfo-win32.cc Normal file
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/* Author: Josh Holtrop
* DornerWorks screensaver
* This Windows-specific module will get the screen size
* and return the number of monitors present. Right now the
* screensaver will only work properly with two identically
* sized monitors...
*/
#include <string>
#include <windows.h>
#include "displayinfo.h"
static int numMonitors = 0;
void getDisplaySize(int * width, int * height)
{
std::string nullStr = "";
int w = 0;
int h = 0;
/* loop through the display devices to get their dimensions */
for (int i = 0; i < 10; i++)
{
DISPLAY_DEVICE dev;
dev.cb = sizeof(DISPLAY_DEVICE);
if (!EnumDisplayDevices(NULL, i, &dev, 0))
break;
/* we only want real display devices to matter */
if (dev.DeviceID != nullStr)
{
HDC hdc = CreateDC(TEXT("DISPLAY"), dev.DeviceString, NULL, NULL);
if (hdc != NULL)
{
numMonitors++;
w += GetDeviceCaps(hdc, HORZRES);
int thisHeight = GetDeviceCaps(hdc, VERTRES);
if (thisHeight > h)
h = thisHeight;
}
}
}
/* only update width and height if we have valid data */
if (w != 0 && h != 0)
{
*width = w;
*height = h;
}
}
int getNumMonitors()
{
return numMonitors;
}

30
displayinfo.cc Normal file
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/* Author: Josh Holtrop
* DornerWorks screensaver
*/
#include <stdio.h>
#include "displayinfo.h"
#include <X11/Xlib.h>
void getDisplaySize(int * width, int * height)
{
Display * display;
if ((display = XOpenDisplay(NULL)) == NULL)
{
/* fall back on hard-coded defaults */
*width = 1600;
*height = 1200;
}
else
{
int screen_num = DefaultScreen(display);
*width = DisplayWidth(display, screen_num);
*height = DisplayHeight(display, screen_num);
}
}
int getNumMonitors()
{
return 1;
}

9
displayinfo.h Normal file
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/* Author: Josh Holtrop
* DornerWorks screensaver
* Common interface for obtaining display information from either
* Windows or linux
*/
void getDisplaySize(int * width, int * height);
int getNumMonitors();

97
dwscr.cc Normal file
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/* Author: Josh Holtrop
* DornerWorks screensaver
* This was a for-fun project I started working on in November '07
* because I like 3D graphics. I modeled the DornerWorks logo in
* blender, exported it to an Alias WaveFront object and material
* file, wrote an Alias Wavefront object loader, and then wrapped
* some OpenGL and ODE logic around it for various screensaver modes
*/
#include <iostream>
#include <string>
#include <SDL/SDL.h>
#include <SDL/SDL_syswm.h>
#include "displayinfo.h"
#include "ss/SSMain.h"
using namespace std;
#define PROGNAME "dwscr"
#define DEFAULT_WIDTH 1024
#define DEFAULT_HEIGHT 768
/* main function, called upon program invocation */
int main(int argc, char * argv[])
{
const string startString = "/s";
#ifdef WIN32
bool start = false;
#else
bool start = true;
#endif
SDL_Surface * sdlSurface;
int width = DEFAULT_WIDTH;
int height = DEFAULT_HEIGHT;
#ifdef DEBUG
start = true;
#endif
/* make the SDL window appear in the top-left corner of the screen */
putenv("SDL_VIDEO_WINDOW_POS=0,0");
/* do not disable power management (this will allow monitors
* to power off at the normally configured timeout) */
putenv("SDL_VIDEO_ALLOW_SCREENSAVER=1");
/* extremely simple command-line argument handling */
for (int i = 1; i < argc; i++)
{
if (startString == argv[i])
start = true;
}
if (!start)
return 0;
getDisplaySize(&width, &height);
/* initialize SDL library */
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER))
{
cerr << "Error initializing video!" << endl;
return -1;
}
SDL_GL_SetAttribute(SDL_GL_SWAP_CONTROL, 1);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
/* Enable multisampling */
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 4);
if ((sdlSurface = SDL_SetVideoMode(width, height, 0,
SDL_HWSURFACE
#ifndef WINDOW_MODE
| SDL_NOFRAME
#endif
| SDL_OPENGL)) == NULL)
{
cerr << "Error setting video mode!" << endl;
return -2;
}
SDL_WM_SetCaption("dwscr", "dwscr");
#ifndef WINDOW_MODE
SDL_WM_GrabInput(SDL_GRAB_ON);
SDL_ShowCursor(SDL_DISABLE);
#endif
/* after our window is created and SDL and OpenGL are initialized,
* start the main screensaver functionality */
SSMain ss(width, height, getNumMonitors(), sdlSurface);
ss.run();
SDL_Quit();
return 0;
}

BIN
logo/dwlogo.blend Normal file
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Binary file not shown.

22
logo/dwlogo.mtl Normal file
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# Blender3D MTL File: dwlogo.blend
# Material Count: 2
newmtl Material.002
Ns 96.078431
Ka 0.396 0.392 0.078
Kd 0.396 0.392 0.078
Ks 0.2 0.2 0.2
Ni 1.000000
d 1.000000
illum 2
newmtl Material.001
Ns 96.078431
Ka 0.000000 0.326 0.341
Kd 0.000000 0.326 0.341
Ks 0.2 0.2 0.2
Ni 1.000000
d 1.000000
illum 2

645
logo/dwlogo.obj Normal file
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# Blender3D v245 OBJ File: dwlogo.blend
# www.blender3d.org
mtllib dwlogo.mtl
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vn 0.000000 0.000000 -1.000000
vn -0.928184 -0.372121 0.000000
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vn 0.000000 0.000000 1.000000
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1
make-win32.bat Executable file
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@ -0,0 +1 @@
mingw32-make WIN32=1 %*

112
ss/LogoBox.cpp Normal file
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@ -0,0 +1,112 @@
/* Author: Josh Holtrop
* DornerWorks screensaver
* This module can be used to create "LogoBox" objects
* which consist of a 3D DW logo and possibly have a
* mass and boundary associated with them if physics
* is being used
*/
#include <GL/gl.h>
#include <ode/ode.h>
#include "../wfobj/WFObj.hh"
#include "LogoBox.h"
#include "../LoadFile/LoadFile.h"
#include <iostream>
using namespace std;
static GLuint _logoList = 0;
static float _logoAABB[6];
static GLuint _drawList;
/* construct a LogoBox object
* The first time the constructor is called it loads the
* Alias Wavefront object model. Subsequent calls will
* reuse the same module. If physics are being used
* (world and space are not NULL), then the constructor
* initializes an ODE body and geometry for each
* constructed logo.
*/
LogoBox::LogoBox(dWorldID world, dSpaceID space)
{
if (_logoList == 0)
{
WFObj obj;
if (obj.load("dwlogo.obj", NULL, &LoadFile))
{
_logoList = obj.render();
const float * aabb = obj.getAABB();
memcpy(_logoAABB, aabb, sizeof(_logoAABB));
float c_x = (_logoAABB[0] + _logoAABB[3]) / 2.0f;
float c_y = (_logoAABB[1] + _logoAABB[4]) / 2.0f;
float c_z = (_logoAABB[2] + _logoAABB[5]) / 2.0f;
_drawList = glGenLists(1);
glNewList(_drawList, GL_COMPILE);
glPushMatrix();
glTranslatef(-c_x, -c_y, -c_z);
glCallList(_logoList);
glPopMatrix();
glEndList();
}
}
m_body = 0;
m_geom = 0;
if (world != 0)
{
dMass mass;
m_body = dBodyCreate(world);
dMassSetBox(&mass, 1.0, getWidth(), getDepth(), getHeight());
dBodySetMass(m_body, &mass);
if (space != 0)
{
m_geom = dCreateBox(space, getWidth(), getDepth(), getHeight());
dGeomSetBody(m_geom, m_body);
}
}
}
/* Clean up ODE resources */
LogoBox::~LogoBox()
{
if (m_geom)
{
dGeomDestroy(m_geom);
}
if (m_body)
{
dBodyDestroy(m_body);
}
}
void LogoBox::draw()
{
glCallList(_drawList);
}
/* return a pointer to the axis-aligned bounding box for a DW logo */
const float * const LogoBox::getAABB() const
{
return _logoAABB;
}
float LogoBox::getWidth() const
{
return _logoAABB[3] - _logoAABB[0];
}
float LogoBox::getHeight() const
{
return _logoAABB[5] - _logoAABB[2];
}
float LogoBox::getDepth() const
{
return _logoAABB[4] - _logoAABB[1];
}

31
ss/LogoBox.h Normal file
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@ -0,0 +1,31 @@
/* Author: Josh Holtrop
* DornerWorks screensaver
* The LogoBox class
*/
#ifndef LOGOBOX_H
#define LOGOBOX_H
#include <GL/gl.h>
#include <ode/ode.h>
class LogoBox
{
public:
LogoBox(dWorldID world = 0, dSpaceID space = 0);
~LogoBox();
void draw();
const float * const getAABB() const;
float getWidth() const;
float getHeight() const;
float getDepth() const;
dBodyID getBody() { return m_body; }
dGeomID getGeom() { return m_geom; }
protected:
dBodyID m_body;
dGeomID m_geom;
};
#endif

15
ss/Makefile Normal file
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@ -0,0 +1,15 @@
OBJS := SSMain.o
OBJS += SSMode.o
OBJS += LogoBox.o
OBJS += PlainSpin.o
OBJS += TumblingLogos.o
OBJS += Towers.o
AROBJS := $(foreach o,$(OBJS),ss.a($(o)))
all: ss.a
ss.a: $(AROBJS)
clean:
-$(RM) -f *~ *.o *.a

46
ss/PlainSpin.cc Normal file
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@ -0,0 +1,46 @@
/* Author: Josh Holtrop
* DornerWorks screensaver
* This module implements a very simple screensaver mode.
* It just creates a DW logo and then continuously spins around it.
*/
#include <GL/gl.h>
#include <GL/glu.h>
#include "PlainSpin.h"
#include <iostream>
using namespace std;
/* construct screensaver mode and do some basic OpenGL setup */
PlainSpin::PlainSpin(SSMain * _SSMain) : SSMode(_SSMain)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0,
(double)m_SSMain->getWidth()
/ (double)m_SSMain->getHeight()
/ (double)m_SSMain->getNumMonitors(),
0.01,
1000.01);
glMatrixMode(GL_MODELVIEW);
}
/* called every time this screensaver mode should redraw the screen */
void PlainSpin::update()
{
SSMode::update();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int numMonitors = m_SSMain->getNumMonitors();
int width = m_SSMain->getWidth();
int height = m_SSMain->getHeight();
for (int i = 0; i < numMonitors; i++)
{
glViewport(i*width/numMonitors, 0, width/numMonitors, height);
glLoadIdentity();
gluLookAt(0, 0, 12, 0, 0, 0, 0, 1, 0);
glRotatef(m_elapsed/33.0f, 0, 1, 0);
m_logoBox.draw();
}
SDL_GL_SwapBuffers();
}

23
ss/PlainSpin.h Normal file
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@ -0,0 +1,23 @@
/* Author: Josh Holtrop
* DornerWorks screensaver
* A simple spinning logo screensaver mode object
*/
#ifndef PLAINSPIN_H
#define PLAINSPIN_H
#include "SSMain.h"
#include "SSMode.h"
#include "LogoBox.h"
class PlainSpin : public SSMode
{
public:
PlainSpin(SSMain * _SSMain);
void update();
protected:
LogoBox m_logoBox;
};
#endif

151
ss/SSMain.cc Normal file
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@ -0,0 +1,151 @@
/* Author: Josh Holtrop
* DornerWorks screensaver
* This module implements the main functionality of the DW screensaver.
* It is responsible for handling input and timer events, as well
* as instantiating and rotating through the various screensaver modes
* that have been implemented.
*/
#include <stdlib.h> /* srand() */
#include <time.h> /* time() */
#include <GL/gl.h>
#include <GL/glu.h>
#include <SDL/SDL.h>
#include "SSMain.h"
#include "PlainSpin.h"
#include "TumblingLogos.h"
#include "Towers.h"
/* switch to the next screensaver mode after this many milliseconds */
#define SSMODE_TIMEOUT_MSEC (1000*45)
static SDL_Event event;
/* create the main screensaver object */
SSMain::SSMain(int width, int height, int numMonitors, SDL_Surface * sdlSurface)
: m_width (width), m_height (height),
m_numMonitors (numMonitors), m_sdlSurface (sdlSurface),
m_mode(NULL), m_drawing(false)
{
/* set up some common OpenGL defaults */
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_CULL_FACE);
GLfloat ambient[] = {0.0f, 0.0f, 0.0f, 1.0f};
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
/* setup redraw SDL event structure */
event.type = SDL_USEREVENT;
event.user.code = 0;
srand(time(NULL));
}
/* called by SDL when the update timer expires */
Uint32 SSMain::updateCallback(Uint32 interval, void * param)
{
SSMain * ssmain = (SSMain *) param;
return ssmain->updateCallback(interval);
}
/* member update function to be called by our registered
* SDL callback non-member function */
Uint32 SSMain::updateCallback(Uint32 interval)
{
if (!m_drawing)
{
SDL_PushEvent(&event);
}
return interval;
}
/* called to begin the screensaver,
* exits when the screensaver should terminate */
void SSMain::run()
{
Uint32 elapsed_msec;
Uint32 lastChanged_msec = 0;
SDL_Event event;
/* initially set the screensaver mode */
m_mode = startMode();
/* register a screen redrawing SDL event */
SDL_AddTimer(12, &updateCallback, this);
/* draw the screen */
update();
/* main event loop */
while (SDL_WaitEvent(&event))
{
elapsed_msec = SDL_GetTicks(); /* get the time the event occurred at */
if (elapsed_msec - lastChanged_msec > SSMODE_TIMEOUT_MSEC)
{
delete m_mode;
m_mode = startMode();
lastChanged_msec = elapsed_msec;
}
switch (event.type)
{
#ifndef WINDOW_MODE
case SDL_KEYDOWN: /* terminate screensaver upon */
#endif
case SDL_QUIT: /* key press or quit event */
goto RET;
case SDL_MOUSEBUTTONDOWN:
if (event.button.button == 1)
{
delete m_mode;
m_mode = startMode();
lastChanged_msec = elapsed_msec;
}
break;
case SDL_USEREVENT:
if (event.user.code == 0)
{
update();
}
break;
}
}
RET:
;
}
/* return a new screensaver mode object to start displaying */
SSMode * SSMain::startMode()
{
static int mode = 0;
const int numModes = 3;
mode++;
if (mode >= numModes)
mode = 0;
switch (mode)
{
case 0:
return new PlainSpin(this);
case 1:
return new Towers(this);
default:
return new TumblingLogos(this);
}
}
/* call the update function to redraw the screen from the
* currently active screensaver mode.
* Uses a pseudo-semaphore to block new redraw requests
* from coming in while current ones are being serviced.
*/
void SSMain::update()
{
m_drawing = true;
m_mode->update();
m_drawing = false;
}

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/* Author: Josh Holtrop
* DornerWorks screensaver
* The main screensaver module
*/
#ifndef SSMAIN_H
#define SSMAIN_H
#include <GL/gl.h>
#include <SDL/SDL.h>
class SSMode;
#include "SSMode.h"
class SSMain
{
public:
SSMain(int width, int height, int numMonitors, SDL_Surface * sdlSurface);
void run();
int getWidth() { return m_width; }
int getHeight() { return m_height; }
int getNumMonitors() { return m_numMonitors; }
SDL_Surface * getSurface() { return m_sdlSurface; }
Uint32 updateCallback(Uint32 interval);
protected:
static Uint32 updateCallback(Uint32 interval, void * param);
void update();
SSMode * startMode();
int m_width;
int m_height;
int m_numMonitors;
SDL_Surface * m_sdlSurface;
SSMode * m_mode;
bool m_drawing;
};
#endif

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/* Author: Josh Holtrop
* DornerWorks screensaver
* SSMode is base class that provides common functionality for
* screensaver modes. It should be extended by a screensaver
* mode implementing class.
*/
#include "SSMode.h"
SSMode::SSMode(SSMain * _SSMain)
: m_SSMain(_SSMain)
{
m_startTick = SDL_GetTicks();
}
SSMode::~SSMode()
{
}
/* update the number of elapsed milliseconds */
void SSMode::update()
{
Uint32 ticks = SDL_GetTicks();
m_elapsed = ticks - m_startTick;
}
/* push an OpenGL matrix onto the matrix stack for a given
* ODE body position and rotation */
void SSMode::pushTransform(const float pos[3], const float R[12])
{
GLfloat matrix[16];
matrix[0] = R[0];
matrix[1] = R[4];
matrix[2] = R[8];
matrix[3] = 0;
matrix[4] = R[1];
matrix[5] = R[5];
matrix[6] = R[9];
matrix[7] = 0;
matrix[8] = R[2];
matrix[9] = R[6];
matrix[10] = R[10];
matrix[11] = 0;
matrix[12] = pos[0];
matrix[13] = pos[1];
matrix[14] = pos[2];
matrix[15] = 1;
glPushMatrix();
glMultMatrixf(matrix);
}

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/* Author: Josh Holtrop
* DornerWorks screensaver
* A base class for deriving concrete screensaver mode implementations
*/
#ifndef SSMODE_H
#define SSMODE_H
#include <SDL/SDL.h>
#include <GL/gl.h>
class SSMain;
#include "SSMain.h"
class SSMode
{
public:
SSMode(SSMain * _SSMain);
virtual ~SSMode();
virtual void update();
void pushTransform(const float pos[3], const float R[12]);
protected:
SSMain * m_SSMain;
Uint32 m_startTick;
Uint32 m_elapsed;
};
#endif

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/* Author: Josh Holtrop
* DornerWorks screensaver
* A slightly more interesting screensaver mode involving
* towers of DW logos with randomly disappearing ones
*/
#include <math.h> /* fmax(), sin() */
#include <stdlib.h> /* rand() */
#include <GL/gl.h>
#include <GL/glu.h>
#include "Towers.h"
#include <ode/ode.h>
#include <iostream>
using namespace std;
#define WORLD_STEP 0.001
/* time at beginning of mode to not remove any logos (msec) */
#define WAIT_TIME 6000
/* amount of time to wait before removing another logo (msec) */
#define REMOVE_TIME 3000
#define GROUND_ALPHA 0.5
Towers::Towers(SSMain * _SSMain) : SSMode(_SSMain)
{
/* set up our specific openGL settings */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0,
(double)m_SSMain->getWidth()
/ (double)m_SSMain->getHeight()
/ (double)m_SSMain->getNumMonitors(),
0.01,
1000.01);
glMatrixMode(GL_MODELVIEW);
/* create the ground texture */
float tex[] = {1.0, 0.0, 0.0, GROUND_ALPHA,
1.0, 1.0, 1.0, GROUND_ALPHA,
1.0, 1.0, 1.0, GROUND_ALPHA,
1.0, 0.0, 0.0, GROUND_ALPHA};
glGenTextures(1, &m_groundTexture);
glBindTexture(GL_TEXTURE_2D, m_groundTexture);
glTexImage2D(GL_TEXTURE_2D, 0, 4, 2, 2, 0, GL_RGBA, GL_FLOAT, tex);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
/* create the ODE world */
createWorld();
m_lastElapsed = 0;
m_logoToRemove = -1;
m_logosList = glGenLists(1);
}
Towers::~Towers()
{
int sz = m_logos.size();
for (int i = 0; i < sz; i++)
{
delete m_logos[i];
}
dJointGroupDestroy(m_contactJointGroup);
dWorldDestroy(m_world);
dSpaceDestroy(m_space);
glDeleteTextures(1, &m_groundTexture);
glDeleteLists(m_logosList, 1);
}
void Towers::createWorld()
{
/* set up the ODE world and collision space */
m_world = dWorldCreate();
// dWorldSetCFM(m_world, 1e-5);
dWorldSetGravity(m_world, 0, -9.81, 0);
dWorldSetERP(m_world, 0.8);
m_space = dHashSpaceCreate(0);
// dVector3 center = {0, 10, 0};
// dVector3 extents = {100, 40, 100};
// m_space = dQuadTreeSpaceCreate(0, center, extents, 5);
m_contactJointGroup = dJointGroupCreate(0);
double lHeight = 0.0;
const double towerBaseOffset = 0.0;
const int towerHeight = 6;
const double towerSpacing = 10.0;
const double logoTierSpacing = 3.75;
bool turn = false;
for (double xoffset = -towerSpacing;
xoffset < towerSpacing*1.1;
xoffset += towerSpacing*2.0)
{
for (double zoffset = -towerSpacing;
zoffset < towerSpacing*1.1;
zoffset += towerSpacing*2.0)
{
double towerOffset = 0.0;
for (int i = 0;
i < towerHeight;
i++, towerOffset += lHeight, turn = !turn)
{
double localXOffset = 0.0;
double localZOffset = 0.0;
if (turn)
localXOffset = -logoTierSpacing;
else
localZOffset = -logoTierSpacing;
for (int i = 0; i < 2; i++)
{
LogoBox * lb = new LogoBox(m_world, m_space);
if (lHeight == 0.0)
lHeight = lb->getDepth();
dMatrix3 rotation;
dRFromEulerAngles(rotation,
0,
turn ? M_PI_2 : 0,
0);
dBodySetRotation(lb->getBody(), rotation);
dBodySetPosition(lb->getBody(),
xoffset + localXOffset,
towerBaseOffset + towerOffset + lb->getDepth()/2.0,
zoffset + localZOffset);
m_logos.push_back(lb);
if (turn)
localXOffset += logoTierSpacing * 2;
else
localZOffset += logoTierSpacing * 2;
}
}
turn = !turn;
}
}
/* create ground plane */
dCreatePlane(m_space, 0, 1, 0, 0);
}
void Towers::update()
{
SSMode::update();
if (m_lastElapsed == 0)
m_lastElapsed = m_elapsed;
if (m_logoToRemove == -1 && m_elapsed > WAIT_TIME)
{
if (m_logos.size() > 0)
{
m_lastRemoveTime = m_elapsed;
m_logoToRemove = rand() % m_logos.size();
}
}
else if (m_elapsed - m_lastRemoveTime > REMOVE_TIME)
{
if (m_logoToRemove >= 0)
{
std::vector<LogoBox *>::iterator it = m_logos.begin();
for (int i = 0; i < m_logoToRemove; i++)
it++;
delete *it;
m_logos.erase(it);
m_logoToRemove = (m_logos.size() > 0) ? rand() % m_logos.size() : -1;
m_lastRemoveTime = m_elapsed;
}
}
Uint32 delta = m_elapsed - m_lastElapsed;
for (unsigned int i = 0; i < delta / 2; i++)
worldStep();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int numMonitors = m_SSMain->getNumMonitors();
int width = m_SSMain->getWidth();
int height = m_SSMain->getHeight();
bool drewLogos = false;
for (int i = 0; i < numMonitors; i++)
{
glViewport(i*width/numMonitors, 0, width/numMonitors, height);
glLoadIdentity();
gluLookAt(0, 30, 55, /* eye position */
0, 12, 0, /* focal point */
0, 1, 0); /* up vector */
glRotatef(m_elapsed/60.0f, 0, 1, 0); /* rotate view over time */
/* draw logo reflection */
glPushAttrib(GL_POLYGON_BIT);
glFrontFace(GL_CW); /* polygon vertex order reversed when
reflecting across a plane */
glPushMatrix();
glScalef(1.0, -1.0, 1.0);
if (drewLogos)
glCallList(m_logosList);
else
{
glNewList(m_logosList, GL_COMPILE_AND_EXECUTE);
drawLogos();
glEndList();
drewLogos = true;
}
glPopMatrix();
glPopAttrib();
drawGround();
/* draw logos normally */
// drawLogos();
glCallList(m_logosList);
}
SDL_GL_SwapBuffers();
m_lastElapsed = m_elapsed;
}
void Towers::drawLogos()
{
/* draw the logos */
int sz = m_logos.size();
for (int i = 0; i < sz; i++)
{
dBodyID body = m_logos[i]->getBody();
pushTransform(dBodyGetPosition(body),
dBodyGetRotation(body));
if (i == m_logoToRemove)
{
float amt = fabsf(sin(1.9*M_PI*
(m_elapsed-m_lastRemoveTime)/REMOVE_TIME));
GLfloat emission[] = {0.0, 0.0, amt, 1.0};
glPushAttrib(GL_LIGHTING_BIT);
glMaterialfv(GL_FRONT, GL_EMISSION, emission);
}
m_logos[i]->draw();
if (i == m_logoToRemove)
{
glPopAttrib();
}
glPopMatrix();
}
}
void Towers::drawGround()
{
const float gs = 120; /* ground size */
const float tt = 20; /* texture tiles */
glPushAttrib(GL_ENABLE_BIT);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
glBegin(GL_QUADS);
glNormal3f(0, 1, 0);
glTexCoord2f(0, 0);
glVertex3f(-gs, 0, gs);
glTexCoord2f(tt, 0);
glVertex3f(gs, 0, gs);
glTexCoord2f(tt, tt);
glVertex3f(gs, 0, -gs);
glTexCoord2f(0, tt);
glVertex3f(-gs, 0, -gs);
glEnd();
glPopAttrib();
}
/* used by ODE to perform collision detection */
void Towers_collide_callback(void * data, dGeomID o1, dGeomID o2)
{
const int maxNumContacts = 2;
Towers * t = (Towers *) data;
static dContact contact[maxNumContacts];
dBodyID b1 = dGeomGetBody(o1);
dBodyID b2 = dGeomGetBody(o2);
if (b1 && b2 && dAreConnected(b1, b2))
return;
int num = dCollide(o1, o2, maxNumContacts,
&contact[0].geom, sizeof(dContact));
int i;
for (i = 0; i < num; i++)
{
contact[i].surface.mode =
dContactSlip1 | dContactSlip2 | dContactBounce |
dContactSoftERP | dContactSoftCFM | dContactApprox1;
contact[i].surface.mu = 0.5;
contact[i].surface.slip1 = 0.0;
contact[i].surface.slip2 = 0.0;
contact[i].surface.soft_erp = 0.8;
contact[i].surface.soft_cfm = 0.01;
contact[i].surface.bounce = 0.0;
dJointID joint = dJointCreateContact(t->m_world,
t->m_contactJointGroup, contact + i);
dJointAttach(joint, b1, b2);
}
}
/* invokes ODE to do physics on our world */
void Towers::worldStep()
{
dSpaceCollide(m_space, this, Towers_collide_callback);
dWorldQuickStep(m_world, WORLD_STEP);
dJointGroupEmpty(m_contactJointGroup);
}

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/* Author: Josh Holtrop
* DornerWorks screensaver
* A slightly more interesting screensaver mode involving
* towers of DW logos with randomly disappearing ones
*/
#ifndef TOWERS_H
#define TOWERS_H
#include "SSMain.h"
#include "SSMode.h"
#include "LogoBox.h"
#include <ode/ode.h>
#include <vector>
class Towers : public SSMode
{
public:
Towers(SSMain * _SSMain);
~Towers();
void update();
protected:
void createWorld();
void worldStep();
void drawLogos();
void drawGround();
friend void Towers_collide_callback(void * data, dGeomID o1, dGeomID o2);
dWorldID m_world;
dSpaceID m_space;
dJointGroupID m_contactJointGroup;
std::vector<LogoBox *> m_logos;
Uint32 m_lastElapsed;
GLuint m_groundTexture;
int m_logoToRemove;
Uint32 m_lastRemoveTime;
GLuint m_logosList;
};
#endif

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/* Author: Josh Holtrop
* DornerWorks screensaver
* This module implements a slightly more interesting screensaver
* mode that contains many DornerWorks logos that "tumble" around
* inside a cube-shaped container as gravity randomly shifts every
* few seconds
*/
#include <math.h> /* fmax() */
#include <stdlib.h> /* rand() */
#include <GL/gl.h>
#include <GL/glu.h>
#include "TumblingLogos.h"
#include <ode/ode.h>
#include <iostream>
using namespace std;
#define WORLD_STEP 0.001
/* number of milliseconds after which to switch gravity */
#define GRAVITY_CHANGE_MSEC 4000
static double randDbl()
{
return ((double) rand() / (double) RAND_MAX);
}
TumblingLogos::TumblingLogos(SSMain * _SSMain) : SSMode(_SSMain)
{
/* set up our specific openGL settings */
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0,
(double)m_SSMain->getWidth()
/ (double)m_SSMain->getHeight()
/ (double)m_SSMain->getNumMonitors(),
0.01,
1000.01);
glMatrixMode(GL_MODELVIEW);
/* create the ODE world */
createWorld();
m_lastGravityChangeTime = m_lastElapsed = 0;
}
TumblingLogos::~TumblingLogos()
{
int sz = m_logos.size();
for (int i = 0; i < sz; i++)
{
delete m_logos[i];
}
dJointGroupDestroy(m_contactJointGroup);
dWorldDestroy(m_world);
dSpaceDestroy(m_space);
}
void TumblingLogos::createWorld()
{
/* set up the ODE world and collision space */
m_world = dWorldCreate();
// dWorldSetCFM(m_world, 1e-5);
dWorldSetGravity(m_world, 0, -9.81, 0);
dWorldSetERP(m_world, 0.8);
m_space = dHashSpaceCreate(0);
m_contactJointGroup = dJointGroupCreate(0);
m_logoSize = 0.0;
m_boxSize = 0.0;
double logo_offset = 0.0;
double logoCellSize = 0.0;
/* create the logos to fill the tumble box */
for (int x = 0; x < TUMBLE_BOX_CELLS; x++)
{
for (int y = 0; y < TUMBLE_BOX_CELLS; y++)
{
for (int z = 0; z < TUMBLE_BOX_CELLS; z++)
{
LogoBox * lb = new LogoBox(m_world, m_space);
if (m_boxSize == 0.0)
{
m_logoSize = fmax(fmax(lb->getWidth(), lb->getDepth()),
lb->getHeight());
logoCellSize = m_logoSize * 1.3;
m_boxSize = logoCellSize * TUMBLE_BOX_CELLS;
logo_offset = logoCellSize/2.0 - m_boxSize/2.0;
}
dMatrix3 rotation;
dRFromEulerAngles(rotation,
randDbl() * M_PI * 2.0,
randDbl() * M_PI * 2.0,
randDbl() * M_PI * 2.0);
dBodySetPosition(lb->getBody(),
x * logoCellSize + logo_offset +
(randDbl() - 0.5) * 0.1 * m_logoSize,
y * logoCellSize + logo_offset +
(randDbl() - 0.5) * 0.1 * m_logoSize,
z * logoCellSize + logo_offset +
(randDbl() - 0.5) * 0.1 * m_logoSize);
dBodySetRotation(lb->getBody(), rotation);
m_logos.push_back(lb);
}
}
}
/* tumble box will be size m_boxSize X m_boxSize X m_boxSize
* centered at the origin */
/* create planes surrounding the tumble box */
dCreatePlane(m_space, -1, 0, 0, -m_boxSize/2.0);
dCreatePlane(m_space, 1, 0, 0, -m_boxSize/2.0);
dCreatePlane(m_space, 0, -1, 0, -m_boxSize/2.0);
dCreatePlane(m_space, 0, 1, 0, -m_boxSize/2.0);
dCreatePlane(m_space, 0, 0, -1, -m_boxSize/2.0);
dCreatePlane(m_space, 0, 0, 1, -m_boxSize/2.0);
}
void TumblingLogos::update()
{
SSMode::update();
if (m_lastElapsed == 0)
m_lastGravityChangeTime = m_lastElapsed = m_elapsed;
/* change gravity if it has been GRAVITY_CHANGE_MSEC milliseconds */
if (m_elapsed - m_lastGravityChangeTime > GRAVITY_CHANGE_MSEC)
{
changeGravity();
m_lastGravityChangeTime = m_elapsed;
}
Uint32 delta = m_elapsed - m_lastElapsed;
for (unsigned int i = 0; i < delta / 2; i++)
worldStep();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
int numMonitors = m_SSMain->getNumMonitors();
int width = m_SSMain->getWidth();
int height = m_SSMain->getHeight();
for (int i = 0; i < numMonitors; i++)
{
glViewport(i*width/numMonitors, 0, width/numMonitors, height);
glLoadIdentity();
gluLookAt(0, 0, m_boxSize * 1.25, 0, 0, 0, 0, 1, 0);
glRotatef(m_elapsed/60.0f, 0, 1, 0);
/* draw the logos */
int sz = m_logos.size();
for (int i = 0; i < sz; i++)
{
dBodyID body = m_logos[i]->getBody();
pushTransform(dBodyGetPosition(body),
dBodyGetRotation(body));
m_logos[i]->draw();
glPopMatrix();
}
/* draw the wireframe bounding box */
glColor3f(1, 1, 1);
double halfBox = m_boxSize/2.0;
glPushAttrib(GL_LIGHTING_BIT);
glDisable(GL_LIGHTING);
for (int i = -1; i <= 1; i += 2)
{
glBegin(GL_LINE_LOOP);
glVertex3f(-halfBox, -halfBox, m_boxSize*i/2.0);
glVertex3f(-halfBox, halfBox, m_boxSize*i/2.0);
glVertex3f(halfBox, halfBox, m_boxSize*i/2.0);
glVertex3f(halfBox, -halfBox, m_boxSize*i/2.0);
glEnd();
glBegin(GL_LINES);
glVertex3f(m_boxSize*i/2.0, -halfBox, -halfBox);
glVertex3f(m_boxSize*i/2.0, -halfBox, halfBox);
glVertex3f(m_boxSize*i/2.0, halfBox, -halfBox);
glVertex3f(m_boxSize*i/2.0, halfBox, halfBox);
glEnd();
}
glPopAttrib();
}
SDL_GL_SwapBuffers();
m_lastElapsed = m_elapsed;
}
/* used by ODE to perform collision detection */
void TumblingLogos_collide_callback(void * data, dGeomID o1, dGeomID o2)
{
TumblingLogos * tl = (TumblingLogos *) data;
static dContact contact[4];
dBodyID b1 = dGeomGetBody(o1);
dBodyID b2 = dGeomGetBody(o2);
if (b1 && b2 && dAreConnected(b1, b2))
return;
int num = dCollide(o1, o2, 4, &contact[0].geom, sizeof(dContact));
int i;
for (i = 0; i < num; i++)
{
contact[i].surface.mode =
dContactSlip1 | dContactSlip2 | dContactBounce |
dContactSoftERP | dContactSoftCFM | dContactApprox1;
contact[i].surface.mu = 0.5;
contact[i].surface.slip1 = 0.0;
contact[i].surface.slip2 = 0.0;
contact[i].surface.soft_erp = 0.8;
contact[i].surface.soft_cfm = 0.01;
contact[i].surface.bounce = 0.4;
dJointID joint = dJointCreateContact(tl->m_world,
tl->m_contactJointGroup, contact + i);
dJointAttach(joint, b1, b2);
}
}
/* invokes ODE to do physics on our world */
void TumblingLogos::worldStep()
{
dSpaceCollide(m_space, this, TumblingLogos_collide_callback);
dWorldQuickStep(m_world, WORLD_STEP);
dJointGroupEmpty(m_contactJointGroup);
}
/* randomly chooses a gravity direction */
void TumblingLogos::changeGravity()
{
double g[3] = {0.0, 0.0, 0.0};
double r = randDbl();
if (r < 0.7)
{
/* gravitate towards one of the six sides */
g[(int) (randDbl() * 3)] = ((randDbl() < 0.5) ? -1 : 1) * 9.81;
}
else
{
/* gravitate towards one of the eight corners */
for (int i = 0; i < 3; i++)
{
g[i] = ((randDbl() < 0.5) ? -1 : 1) * 9.81;
}
}
dWorldSetGravity(m_world, g[0], g[1], g[2]);
}

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/* Author: Josh Holtrop
* DornerWorks screensaver
* A slightly more interesting screensaver mode involving
* colliding DW logos contained in a cube that spins while
* gravity randomly changes direction
*/
#ifndef TUMBLING_LOGOS_H
#define TUMBLING_LOGOS_H
#include "SSMain.h"
#include "SSMode.h"
#include "LogoBox.h"
#include <ode/ode.h>
#include <vector>
#define TUMBLE_BOX_CELLS 4
class TumblingLogos : public SSMode
{
public:
TumblingLogos(SSMain * _SSMain);
~TumblingLogos();
void update();
protected:
void createWorld();
void worldStep();
void changeGravity();
friend void TumblingLogos_collide_callback(void * data, dGeomID o1, dGeomID o2);
dWorldID m_world;
dSpaceID m_space;
double m_logoSize;
double m_boxSize;
dJointGroupID m_contactJointGroup;
std::vector<LogoBox *> m_logos;
Uint32 m_lastGravityChangeTime;
Uint32 m_lastElapsed;
};
#endif