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xenocara/app/xlockmore/modes/glx/text3d.cc

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Importing xlockmore 5.22
2006-11-26 04:07:42 -07:00
/* -*- Mode: C; tab-width: 4 -*- */
/* text3d --- Shows moving 3D texts */
#if !defined( lint ) && !defined( SABER )
static const char sccsid[] = "@(#)text3d.cc 5.02 2001/11/09 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.
*
* This module is based on a demo of the gltt graphics library
* Copyright (C) 1998 Stephane Rehel.
*
* See the gltt Official Site at http://gltt.sourceforge.net/
* May have better luck at http://lassauge.free.fr/xlock/
*
* My e-mail address changed to <lassauge AT users.sourceforge.net>
* Web site at http://lassauge.free.fr/
*
* Eric Lassauge (October-28-1999)
*
* Revision History:
* 09-Nov-2001: Removed BLANK and various cleanups
* Added Wander animation
* 09-Mar-2001: Removed an erroneous PushMatrix !!!
* 01-Nov-2000: Allocation checks
* 28-Oct-1999: fixes from Jouk "I play with every mode" Jansen.
* Option ttanimate added.
* 02-Jun-1999: patches for initialization errors of GLTT library.
* Thanks to Jouk Jansen and Scott <mcmillan@cambridge.com>.
* text3d updates for fortunes thanks to Jouk Jansen
* <joukj@hrem.stm.tudelft.nl>
* Option no_split added.
* 23-Aug-1998: add better handling of "faulty" fontfile and randomize
* fontfile if '-ttfont' value is a directory.
* Minor changes for AIX from Jouk Jansen
* (joukj@hrem.stm.tudelft.nl).
*
* TODO :
* Need more animation functions. Help welcome !!
* Light problem with some letters (don't know why they "reflect" more):
* is the problem in gltt or Mesa ???
* SPEED !!!!
* It may sigfault when compiled with -fschedule-insns2
* (i686-pc-linux-gnu)
*
*/
#ifdef STANDALONE /* xscreensaver mode: can't work ! */
#define MODE_text3d
#define PROGCLASS "Text3d"
#define HACK_INIT init_text3d
#define HACK_DRAW draw_text3d
#define HACK_RESHAPE reshape_text3d
#define text3d_opts xlockmore_opts
#define DEFAULTS "*delay: 100000 \n" \
"*ncolors: 64 \n" \
"*font: \n" \
"*text: \n" \
"*filename: \n" \
"*fortunefile: \n" \
"*program: \n"
extern "C"
{
#include "xlockmore.h" /* from the xscreensaver distribution */
}
#else /* !STANDALONE */
#include "xlock.h" /* from the xlockmore distribution */
#include "visgl.h"
#ifdef HAS_MMOV
#undef error
#endif
#endif /* !STANDALONE */
#include "iostuff.h"
#ifdef MODE_text3d
#include <gltt/FTEngine.h>
#include <gltt/FTFace.h>
#include <gltt/FTInstance.h>
#include <gltt/FTGlyph.h>
#include <gltt/FTFont.h>
#include <gltt/GLTTOutlineFont.h>
#include <gltt/GLTTFont.h>
#include <gltt/GLTTGlyphPolygonizer.h>
#include <gltt/GLTTGlyphTriangulator.h>
#include "text3d.h"
#include <GL/glu.h>
/* Yes, it's an ugly mix of 'C' and 'C++' functions */
extern "C" { void init_text3d(ModeInfo * mi); }
extern "C" { void draw_text3d(ModeInfo * mi); }
extern "C" { void change_text3d(ModeInfo * mi); }
extern "C" { void release_text3d(ModeInfo * mi); }
extern "C" { void refresh_text3d(ModeInfo * mi); }
/* arial.ttf is not supplied for legal reasons. */
/* NT and Windows 3.1 in c:\WINDOWS\SYSTEM\ARIAL.TTF */
/* Windows95 in c:\windows\fonts\arial.ttf */
#ifndef DEF_TTFONT
/* Directory of only *.ttf */
/* symbol.ttf and wingding.ttf should be excluded or it may core dump */
/* can be excluded if gltt is modified see README */
#define DEF_TTFONT "/usr/lib/X11/xlock/fonts/"
#endif
#define DEF_EXTRUSION "25.0"
#define DEF_ROTAMPL "1.0"
#define DEF_ROTFREQ "0.001"
#define DEF_FONTSIZE 220
#define DEF_NOSPLIT 0
#define DEF_ANIMATE "Default"
static float extrusion;
static float rampl;
static float rfreq;
static char *mode_font;
static int nosplit;
static char *animate;
/* Manage Option vars */
static XrmOptionDescRec opts[] =
{
{(char *) "-ttfont", (char *) ".text3d.ttfont", XrmoptionSepArg, (caddr_t) NULL},
{(char *) "-extrusion", (char *) ".text3d.extrusion", XrmoptionSepArg, (caddr_t) NULL},
{(char *) "-rot_amplitude", (char *) ".text3d.rot_amplitude", XrmoptionSepArg, (caddr_t) NULL},
{(char *) "-rot_frequency", (char *) ".text3d.rot_frequency", XrmoptionSepArg, (caddr_t) NULL},
{(char *) "-no_split", (char *) ".text3d.no_split", XrmoptionNoArg, (caddr_t) "on"},
{(char *) "+no_split", (char *) ".text3d.no_split", XrmoptionNoArg, (caddr_t) "off"},
{(char *) "-ttanimate", (char *) ".text3d.ttanimate", XrmoptionSepArg, (caddr_t) NULL},
};
static argtype vars[] =
{
{(void *) & mode_font, (char *) "ttfont", (char *) "TTFont", (char *) DEF_TTFONT, t_String},
{(void *) & extrusion, (char *) "extrusion", (char *) "Extrusion", (char *) DEF_EXTRUSION, t_Float},
{(void *) & rampl, (char *) "rot_amplitude", (char *) "RotationAmplitude", (char *) DEF_ROTAMPL, t_Float},
{(void *) & rfreq, (char *) "rot_frequency", (char *) "RotationFrequency", (char *) DEF_ROTFREQ, t_Float},
{(void *) & nosplit, (char *) "no_split", (char *) "NoSplit", (char *) DEF_NOSPLIT, t_Bool},
{(void *) & animate, (char *) "ttanimate", (char *) "TTAnimate", (char *) DEF_ANIMATE, t_String},
};
static OptionStruct desc[] =
{
{(char *) "-ttfont filename", (char *) "Text3d TrueType font file name"},
{(char *) "-extrusion float", (char *) "Text3d extrusion length"},
{(char *) "-rot_amplitude float", (char *) "Text3d rotation amplitude"},
{(char *) "-rot_frequency float", (char *) "Text3d rotation frequency"},
{(char *) "-/+no_split", (char *) "Text3d words splitting off/on"},
{(char *) "-ttanimate anim_name", (char *) "Text3d animation function"},
};
ModeSpecOpt text3d_opts =
{sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
#ifdef USE_MODULES
ModStruct text3d_description =
{"text3d", "init_text3d", "draw_text3d", "release_text3d",
"refresh_text3d", "change_text3d", (char *) NULL, &text3d_opts,
100000, 10, 1, 1, 64, 1.0, "",
"Shows 3D text", 0, NULL};
#endif
static text3dstruct *text3d = (text3dstruct *) NULL;
const double angle_speed = 2.5 / 180.0 * M_PI;
extern "C" {
typedef void (*t3dAnimProc) (text3dstruct * tp);
}
#ifdef __cplusplus
extern "C" {
#endif
static void t3d_anim_fullrandom(text3dstruct * tp);
static void t3d_anim_default(text3dstruct * tp);
static void t3d_anim_default2(text3dstruct * tp);
static void t3d_anim_none(text3dstruct * tp);
static void t3d_anim_crazy(text3dstruct * tp);
static void t3d_anim_updown(text3dstruct * tp);
static void t3d_anim_extrusion(text3dstruct * tp);
static void t3d_anim_rotatexy(text3dstruct * tp);
static void t3d_anim_rotateyz(text3dstruct * tp);
static void t3d_anim_frequency(text3dstruct * tp);
static void t3d_anim_amplitude(text3dstruct * tp);
static void t3d_anim_wander(text3dstruct * tp);
static char *fontfile = (char *) NULL;
#ifdef __cplusplus
}
#endif
static t3dAnimProc anim_array[] =
{
t3d_anim_fullrandom,
t3d_anim_default,
t3d_anim_default2,
t3d_anim_none,
t3d_anim_crazy,
t3d_anim_updown,
t3d_anim_extrusion,
t3d_anim_rotatexy,
t3d_anim_rotateyz,
t3d_anim_frequency,
t3d_anim_amplitude,
t3d_anim_wander,
};
static char * anim_names[] =
{
(char *) "Random",
(char *) "FullRandom",
(char *) "Default",
(char *) "Default2",
(char *) "None",
(char *) "Crazy",
(char *) "UpDown",
(char *) "Extrude",
(char *) "RotateXY",
(char *) "RotateYZ",
(char *) "Frequency", /* needs -rot_frequency /= 0.0 */
(char *) "Amplitude", /* and -rot_amplitude /= 0.0 */
(char *) "Wander",
(char *) NULL
};
static int anims=sizeof anim_array / sizeof anim_array[0] ;
/*
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
* Mode funcs.
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
/*
*-----------------------------------------------------------------------------
* Utils.
*-----------------------------------------------------------------------------
*/
/* Select light stuff with the following defines */
#define TWO_LIGHTS
#define ALL_STUFF
//#define DIFFUSE_COLOR
#ifdef DIFFUSE_COLOR
static void
hsv_to_rgb(double h, double s, double v,
double *r, double *g, double *b)
{
double xh = fmod(h * 360., 360) / 60.0,
i = floor(xh),
f = xh - i,
p1 = v * (1 - s),
p2 = v * (1 - (s * f)),
p3 = v * (1 - (s * (1 - f)));
switch ((int) i)
{
case 0:
*r = v;
*g = p3;
*b = p1;
break;
case 1:
*r = p2;
*g = v;
*b = p1;
break;
case 2:
*r = p1;
*g = v;
*b = p3;
break;
case 3:
*r = p1;
*g = p2;
*b = v;
break;
case 4:
*r = p3;
*g = p1;
*b = v;
break;
case 5:
*r = v;
*g = p1;
*b = p2;
break;
}
}
#endif /* DIFFUSE_COLOR */
/*-------------------------------------------------------------*/
static void spheric_camera(text3dstruct * tp,
float center_x, float center_y, float center_z,
float phi, float theta, float radius)
{
float x = center_x + cos(phi) * cos(theta) * radius;
float y = center_y + sin(phi) * cos(theta) * radius;
float z = center_z + sin(theta) * radius;
float vx = -cos(phi) * sin(theta) * radius;
float vy = -sin(phi) * sin(theta) * radius;
float vz = cos(theta) * radius;
glViewport(0, 0, tp->WinW, tp->WinH);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, GLfloat(tp->WinW) / GLfloat(tp->WinH), 10, 10000);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(x, y, z, center_x, center_y, center_z, vx, vy, vz);
}
/*-------------------------------------------------------------*/
class GLTTGlyphTriangles:public GLTTGlyphTriangulator
{
public:
struct Triangle
{
FTGlyphVectorizer::POINT * p1;
FTGlyphVectorizer::POINT * p2;
FTGlyphVectorizer::POINT * p3;
};
Triangle *triangles;
int nTriangles;
GLTTboolean count_them;
GLTTGlyphTriangles(FTGlyphVectorizer * vectorizer):
GLTTGlyphTriangulator(vectorizer)
{
triangles = 0;
nTriangles = 0;
count_them = GLTT_TRUE;
}
virtual ~GLTTGlyphTriangles()
{
delete[]triangles;
triangles = 0;
}
void alloc()
{
delete triangles;
triangles = new Triangle[nTriangles + 1];
}
virtual void triangle(FTGlyphVectorizer::POINT * p1,
FTGlyphVectorizer::POINT * p2,
FTGlyphVectorizer::POINT * p3)
{
if (count_them)
{
++nTriangles;
return;
}
triangles[nTriangles].p1 = p1;
triangles[nTriangles].p2 = p2;
triangles[nTriangles].p3 = p3;
++nTriangles;
}
};
/*
*-----------------------------------------------------------------------------
* Animation functions.
*-----------------------------------------------------------------------------
*/
/* defines for min/max/evolution factor of animations */
#define FAC_CAMERA 1.15
#define MAX_CAMERA 5.00
#define MIN_EXTRUSION 25.0
#define MAX_EXTRUSION 305.0
#define FAC_EXTRUSION 5.0
#define FAC_FREQ 0.15
#define FAC_AMPL 1.5
#define FAC_RAND 15
#ifdef __cplusplus
extern "C" {
#endif
/*-------------------------------------------------------------*/
static void
t3d_anim_default(text3dstruct * tp)
{
tp->phi += tp->direction * angle_speed;
tp->theta += tp->direction * angle_speed;
}
/*-------------------------------------------------------------*/
static void
t3d_anim_default2(text3dstruct * tp)
{
tp->phi += tp->direction * angle_speed;
tp->theta += tp->direction * angle_speed * 2.0 ;
}
/*-------------------------------------------------------------*/
static void
t3d_anim_none(text3dstruct * tp)
{
}
/*-------------------------------------------------------------*/
static void
t3d_anim_crazy(text3dstruct * tp)
{
int key = NRAND(32);
switch (key)
{
case 0:
case 1:
case 2:
case 3:
tp->theta += angle_speed;
break;
case 4:
case 5:
case 6:
case 7:
tp->theta -= angle_speed;
break;
case 8:
case 9:
case 10:
case 11:
tp->phi -= angle_speed;
break;
case 12:
case 13:
case 14:
case 15:
tp->phi += angle_speed;
case 16:
case 17:
if (tp->camera_dist / FAC_CAMERA > tp->ref_camera_dist)
tp->camera_dist /= FAC_CAMERA;
break;
case 18:
case 19:
if (tp->camera_dist * FAC_CAMERA < (tp->ref_camera_dist * MAX_CAMERA))
tp->camera_dist *= FAC_CAMERA;
break;
case 20:
if ((tp->extrusion - FAC_EXTRUSION) > MIN_EXTRUSION)
tp->extrusion -= FAC_EXTRUSION;
break;
case 21:
if ((tp->extrusion + FAC_EXTRUSION) < MAX_EXTRUSION)
tp->extrusion += FAC_EXTRUSION;
break;
case 22:
case 23:
tp->rampl /= FAC_AMPL;
break;
case 24:
case 25:
tp->rampl *= FAC_AMPL;
break;
case 26:
case 27:
tp->rfreq *= FAC_FREQ;
break;
case 28:
case 29:
tp->rfreq /= FAC_FREQ;
break;
}
}
static void
t3d_anim_updown(text3dstruct * tp)
{
if (tp->direction > 0)
{
if (tp->camera_dist / FAC_CAMERA > tp->ref_camera_dist)
tp->camera_dist /= FAC_CAMERA;
else
tp->direction *=-1;
}
else
{
if (tp->camera_dist * FAC_CAMERA < (tp->ref_camera_dist * MAX_CAMERA))
tp->camera_dist *= FAC_CAMERA;
else
tp->direction *=-1;
}
}
static void
t3d_anim_extrusion(text3dstruct * tp)
{
if (tp->direction > 0)
{
if ((tp->extrusion - FAC_EXTRUSION) > MIN_EXTRUSION)
tp->extrusion -= FAC_EXTRUSION;
else
tp->direction *=-1;
}
else
{
if ((tp->extrusion + FAC_EXTRUSION) < MAX_EXTRUSION)
tp->extrusion += FAC_EXTRUSION;
else
tp->direction *=-1;
}
}
static void
t3d_anim_rotatexy(text3dstruct * tp)
{
tp->phi += tp->direction * angle_speed;
}
static void
t3d_anim_rotateyz(text3dstruct * tp)
{
tp->theta += tp->direction * angle_speed;
}
static void
t3d_anim_frequency(text3dstruct * tp)
{
/* Better visual if freq is a small value < 0.05 */
if (tp->direction > 0)
{
tp->rfreq /= FAC_FREQ;
}
else
{
tp->rfreq *= FAC_FREQ;
}
if (NRAND(100) < FAC_RAND )
tp->direction *=-1;
}
static void
t3d_anim_amplitude(text3dstruct * tp)
{
if (tp->direction > 0)
{
tp->rampl /= FAC_AMPL;
}
else
{
tp->rampl *= FAC_AMPL;
}
if (NRAND(100) < FAC_RAND )
tp->direction *=-1;
}
static void
t3d_anim_fullrandom(text3dstruct * tp)
{
static int animation=NRAND(anims);
if (NRAND(100) < FAC_RAND/5 || animation <= 1)
{
/* change animation */
animation = NRAND(anims);
}
anim_array[animation](tp);
}
static void
t3d_anim_wander(text3dstruct * tp)
{
static int frame = 0;
GLfloat x, y, z;
#define SINOID(SCALE,SIZE) \
((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2)
x = SINOID(0.061, angle_speed);
y = SINOID(0.083, angle_speed * 2.0);
z = SINOID(0.075, MAX_CAMERA * 10.0);
frame++;
tp->phi += tp->direction * x;
tp->theta += tp->direction * y;
tp->camera_dist += tp->direction * z;
}
#ifdef __cplusplus
}
#endif
/*-------------------------------------------------------------*/
/*-------------------------------------------------------------*/
/*
*-----------------------------------------------------------------------------
* "Main" local funcs.
*-----------------------------------------------------------------------------
*/
void
reshape_text3d(ModeInfo * mi, int width, int height)
{
text3dstruct *tp = &text3d[MI_SCREEN(mi)];
glViewport(0, 0, tp->WinW = (GLint) width, tp->WinH = (GLint) height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(60.0, (GLdouble) width / (GLdouble) height, 10, 10000);
glMatrixMode(GL_MODELVIEW);
}
/*-------------------------------------------------------------*/
static void
Animate(text3dstruct * tp)
{
anim_array[tp->animation](tp);
}
/*-------------------------------------------------------------*/
static void
Draw(text3dstruct * tp,
Display * display,
Window window)
{
int text_length;
char *c_text;
if (!nosplit)
{
text_length = index_dir(tp->words, (char *) " ");
if (text_length == 0)
text_length = strlen(tp->words);
if ((c_text = (char *) malloc(text_length)) != NULL)
strncpy(c_text, tp->words, text_length);
}
else
{
c_text = tp->words_start;
text_length = strlen(tp->words_start);
}
GLTTFont font(tp->face);
if (!font.create(DEF_FONTSIZE))
return;
FTGlyphVectorizer *vec = new FTGlyphVectorizer[text_length];
GLTTGlyphTriangles **tri = new GLTTGlyphTriangles *[text_length];
int i;
for (i = 0; i < text_length; ++i)
tri[i] = new GLTTGlyphTriangles(vec + i);
if (tp->camera_dist == 0.0)
/* PURIFY reports an Array Bounds Read on the next line */
tp->ref_camera_dist = tp->camera_dist = font.getWidth(c_text) * 0.75;
double min_y = 1e20;
double max_y = -1e20;
double size_x = 0.0;
for (i = 0; i < text_length; ++i)
{
int ch = (unsigned char) c_text[i];
#if ((XMESA_MAJOR_VERSION > 3 ) || (( XMESA_MAJOR_VERSION == 3 ) && (XMESA_MINOR_VERSION > 0 )))
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
FTGlyph *g = font.getFont()->getGlyph(ch);
if (g == 0)
continue;
FTGlyphVectorizer & v = vec[i];
v.setPrecision(10.0);
/* PURIFY reports an Array Bounds Write on the next line */
if (!v.init(g))
continue;
size_x += v.getAdvance();
if (!v.vectorize())
continue;
for (int c = 0; c < v.getNContours(); ++c)
{
FTGlyphVectorizer::Contour * contour = v.getContour(c);
if (contour == 0)
continue;
for (int j = 0; j < contour->nPoints; ++j)
{
FTGlyphVectorizer::POINT * point = contour->points + j;
if (point->y < min_y)
min_y = point->y;
if (point->y > max_y)
max_y = point->y;
point->data = (void *) new double[6];
}
}
GLTTGlyphTriangles *t = tri[i];
if (!t->init(g))
continue;
t->count_them = GLTT_TRUE;
t->nTriangles = 0;
t->triangulate();
t->count_them = GLTT_FALSE;
t->alloc();
t->nTriangles = 0;
t->triangulate();
}
if (!nosplit)
free(c_text);
if (size_x == 0.0)
{
(void) fprintf(stderr, "Please give something to draw !\n");
return;
}
double y_delta = (min_y + max_y) / 2. + min_y + 50;
for (i = 0; i < text_length; ++i)
{
#if ((XMESA_MAJOR_VERSION > 3 ) || (( XMESA_MAJOR_VERSION == 3 ) && (XMESA_MINOR_VERSION > 0 )))
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
FTGlyphVectorizer & v = vec[i];
for (int c = 0; c < v.getNContours(); ++c)
{
FTGlyphVectorizer::Contour * contour = v.getContour(c);
if (contour == 0)
continue;
for (int j = 0; j < contour->nPoints; ++j)
{
FTGlyphVectorizer::POINT * point = contour->points + j;
point->y -= y_delta;
}
}
}
#ifdef ALL_STUFF
float front_emission[4] = {0.1, 0.1, 0.1, 0};
float front_ambient[4] = {0.2, 0.2, 0.2, 0};
float front_diffuse[4] = {0.95, 0.95, 0.8, 0};
float back_diffuse[4] = {0.75, 0.75, 0.95, 0};
float front_specular[4] = {0.6, 0.6, 0.6, 0};
glMaterialfv(GL_FRONT, GL_EMISSION, front_emission);
glMaterialfv(GL_FRONT, GL_AMBIENT, front_ambient);
glMaterialfv(GL_FRONT, GL_DIFFUSE, front_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR, front_specular);
glMaterialf(GL_FRONT, GL_SHININESS, 32.0);
#ifdef TWO_LIGHTS
float light1_ambient[4] = {0.3, 0.3, 0.3, 1};
float light1_diffuse[4] = {0.9, 0.9, 0.9, 1}; /* A "white" light */
float light1_specular[4] = {0.7, 0.7, 0.7, 1};
float light1_position[4] = {-1, 1, 1, 0};
glLightfv(GL_LIGHT1, GL_AMBIENT, light1_ambient);
glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_diffuse);
glLightfv(GL_LIGHT1, GL_SPECULAR, light1_specular);
glLightfv(GL_LIGHT1, GL_POSITION, light1_position);
glEnable(GL_LIGHT1);
float light2_ambient[4] = {0.1, 0.1, 0.1, 1};
float light2_diffuse[4] = {0.85, 0.3, 0.3, 1}; /* A "red" light */
float light2_specular[4] = {0.6, 0.6, 0.6, 1};
float light2_position[4] = {1, -1, -1, 0};
glLightfv(GL_LIGHT2, GL_AMBIENT, light2_ambient);
glLightfv(GL_LIGHT2, GL_DIFFUSE, light2_diffuse);
glLightfv(GL_LIGHT2, GL_SPECULAR, light2_specular);
glLightfv(GL_LIGHT2, GL_POSITION, light2_position);
glEnable(GL_LIGHT2);
#else
GLfloat pos[4] = {-1.0, 1.0, 1.0, 0.0};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glEnable(GL_LIGHT0);
#endif /* TWO_LIGHTS */
float back_color[4] = {0.2, 0.2, 0.6, 0};
glMaterialfv(GL_BACK, GL_DIFFUSE, back_color);
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);
glCullFace(GL_BACK);
glFrontFace(GL_CCW);
glEnable(GL_CULL_FACE);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glEnable(GL_COLOR_MATERIAL);
#endif /* ALL_STUFF */
spheric_camera(tp, tp->center_x,
tp->center_y + size_x / 2.,
0,
tp->phi, tp->theta + M_PI / 2, tp->camera_dist);
glClearColor(0, 0, 0, 0);
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
#ifdef ALL_STUFF
glEnable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
glEnable(GL_NORMALIZE);
#endif
double base_x = 0.0;
for (i = 0; i < text_length; ++i)
{
#if ((XMESA_MAJOR_VERSION > 3 ) || (( XMESA_MAJOR_VERSION == 3 ) && (XMESA_MINOR_VERSION > 0 )))
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
FTGlyphVectorizer & v = vec[i];
int c;
for (c = 0; c < v.getNContours(); ++c)
{
FTGlyphVectorizer::Contour * contour = v.getContour(c);
if (contour == 0)
continue;
for (int j = 0; j < contour->nPoints; ++j)
{
FTGlyphVectorizer::POINT * point = contour->points + j;
double cx = -point->y;
double cy = base_x + point->x;
double phi = sin(cy * tp->rfreq) * tp->rampl * M_PI / 2.;
double rcx = cx * cos(phi);
double rcz = cx * sin(phi);
double *p = (double *) point->data;
double *n = p + 3;
p[0] = rcx;
p[1] = cy;
p[2] = rcz;
n[0] = -sin(phi);
n[1] = 0.;
n[2] = cos(phi);
}
}
GLTTGlyphTriangles::Triangle * triangles = tri[i]->triangles;
int nTriangles = tri[i]->nTriangles;
glBegin(GL_TRIANGLES);
for (int j = 0; j < nTriangles; ++j)
{
GLTTGlyphTriangles::Triangle & t = triangles[j];
double *p1 = ((double *) t.p1->data);
double *p2 = ((double *) t.p2->data);
double *p3 = ((double *) t.p3->data);
double *n1 = p1 + 3;
double *n2 = p2 + 3;
double *n3 = p3 + 3;
#ifdef ALL_STUFF
glColor4fv(front_diffuse);
#endif
glNormal3dv(n1);
glVertex3dv(p1);
glNormal3dv(n2);
glVertex3dv(p2);
glNormal3dv(n3);
glVertex3dv(p3);
#ifdef ALL_STUFF
glColor4fv(back_diffuse);
#endif
glNormal3d(-n3[0], 0., -n3[2]);
glVertex3d(p3[0] - n3[0] * tp->extrusion,
p3[1],
p3[2] - n3[2] * tp->extrusion);
glNormal3d(-n2[0], 0., -n2[2]);
glVertex3d(p2[0] - n2[0] * tp->extrusion,
p2[1],
p2[2] - n2[2] * tp->extrusion);
glNormal3d(-n1[0], 0., -n1[2]);
glVertex3d(p1[0] - n1[0] * tp->extrusion,
p1[1],
p1[2] - n1[2] * tp->extrusion);
}
glEnd();
for (c = 0; c < v.getNContours(); ++c)
{
FTGlyphVectorizer::Contour * contour = v.getContour(c);
if (contour == 0)
continue;
glBegin(GL_QUAD_STRIP);
for (int j = 0; j <= contour->nPoints; ++j)
{
int j1 = (j < contour->nPoints) ? j : 0;
int j0 = (j1 == 0) ? (contour->nPoints - 1) : (j1 - 1);
FTGlyphVectorizer::POINT * point0 = contour->points + j0;
FTGlyphVectorizer::POINT * point1 = contour->points + j1;
double *p0 = (double *) point0->data;
double *p1 = (double *) point1->data;
double *e = p0 + 3;
double vx = p1[0] - p0[0];
double vy = p1[1] - p0[1];
double vz = p1[2] - p0[2];
double nx = -vy * e[2];
double ny = e[2] * vx - vz * e[0];
double nz = e[0] * vy;
#ifdef DIFFUSE_COLOR
double u = double ((j * 2) % contour->nPoints) / double (contour->nPoints);
double r, g, b;
hsv_to_rgb(u, 0.7, 0.7, &r, &g, &b);
glColor4f(r, g, b, 1); // diffuse color of material
#else
GLfloat blue[4] = {0.35, 0.35, 1.0, 1.0};
glColor4fv(blue);
#endif
glNormal3f(nx, ny, nz);
glVertex3f(p0[0] - e[0] * tp->extrusion,
p0[1],
p0[2] - e[2] * tp->extrusion);
glNormal3f(nx, ny, nz);
glVertex3f(p0[0], p0[1], p0[2]);
}
glEnd();
}
base_x += v.getAdvance();
}
#ifdef ALL_STUFF
glDisable(GL_NORMALIZE);
glDisable(GL_LIGHTING);
glShadeModel(GL_FLAT);
#endif
glPopMatrix();
glXSwapBuffers(display, window);
for (i = 0; i < text_length; ++i)
{
#if ((XMESA_MAJOR_VERSION > 3 ) || (( XMESA_MAJOR_VERSION == 3 ) && (XMESA_MINOR_VERSION > 0 )))
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_SWAP_BYTES, GL_FALSE);
glPixelStorei(GL_UNPACK_LSB_FIRST, GL_FALSE);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
#endif
delete tri[i];
FTGlyphVectorizer & v = vec[i];
for (int c = 0; c < v.getNContours(); ++c)
{
FTGlyphVectorizer::Contour * contour = v.getContour(c);
if (contour == 0)
continue;
for (int j = 0; j < contour->nPoints; ++j)
{
FTGlyphVectorizer::POINT * point = contour->points + j;
delete[](double *) point->data;
point->data = 0;
}
}
}
delete[]tri;
delete[]vec;
}
/*
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
* Xlock hooks.
*-----------------------------------------------------------------------------
*-----------------------------------------------------------------------------
*/
/*
*-----------------------------------------------------------------------------
* Initialize text3d. Called each time the window changes.
*-----------------------------------------------------------------------------
*/
void
init_text3d(ModeInfo * mi)
{
int i;
text3dstruct *tp;
if (text3d == NULL)
{
if ((text3d = (text3dstruct *) calloc(MI_NUM_SCREENS(mi),
sizeof(text3dstruct))) == NULL)
return;
}
tp = &text3d[MI_SCREEN(mi)];
tp->wire = MI_IS_WIREFRAME(mi);
tp->extrusion = extrusion;
tp->rampl = rampl;
tp->rfreq = rfreq;
tp->camera_dist = 0.0;
/* Get animation function */
tp->animation = 0; /* Not found equals "Random" */
tp->direction = (LRAND() & 1) ? 1 : -1; /* random direction */
tp->rampl *= tp->direction;
tp->rfreq *= tp->direction;
for(i=0;anim_names[i] != NULL;i++)
{
if ( !strcmp( anim_names[i], animate ) )
{
tp->animation = i;
break;
}
}
if (!tp->animation)
{
/* Random !!! */
tp->animation = NRAND(anims);
}
else
{
tp->animation --;
}
if (MI_IS_DEBUG(mi))
{
(void) fprintf(stderr,
"%s:\n\ttp->animation[%d]=%s\n",
MI_NAME(mi), tp->animation, anim_names[tp->animation+1]);
}
tp->counter = 0;
fontfile = getModeFont(mode_font);
if (!fontfile) {
MI_CLEARWINDOW(mi);
release_text3d(mi);
return;
}
tp->face = new FTFace;
if (!tp->face || !tp->face->open(fontfile)) {
(void) fprintf(stderr, "%s: unable to open True Type font %s!\n", MI_NAME(mi), fontfile);
MI_CLEARWINDOW(mi);
release_text3d(mi);
return;
}
if (MI_IS_DEBUG(mi)) {
(void) fprintf(stderr,
"%s:\n\tfontfile=%s .\n", MI_NAME(mi), fontfile);
}
/* Do not free fontfile getModeFont handles potential leak */
if ((tp->glx_context = init_GL(mi)) != NULL)
{
reshape_text3d(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
/*glDrawBuffer(GL_BACK); */
if (MI_IS_DEBUG(mi))
{
(void) fprintf(stderr,
"%s:\n\tcamera_dist=%.1f\n\ttheta=%.1f\n\tphi=%.1f\n\textrusion=%.1f\n\trampl=%.1f.\n\trfreq=%.1f\n\tdirection=%d\n",
MI_NAME(mi), tp->camera_dist, tp->theta, tp->phi,
tp->extrusion, tp->rampl,tp->rfreq,tp->direction);
}
/*
glXSwapBuffers(display, window);
*/
}
else
{
MI_CLEARWINDOW(mi);
}
/* Initialize displayed string */
tp->words_start = tp->words =
getWords(MI_SCREEN(mi), MI_NUM_SCREENS(mi));
if (MI_IS_DEBUG(mi))
{
(void) fprintf(stderr,
"%s words:\n%s\n",
MI_NAME(mi), tp->words);
}
}
/*
*-----------------------------------------------------------------------------
* Called by the mainline code periodically to update the display.
*-----------------------------------------------------------------------------
*/
void
draw_text3d(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
text3dstruct *tp;
if (text3d == NULL) {
return;
}
tp = &text3d[MI_SCREEN(mi)];
MI_IS_DRAWN(mi) = True;
if (!tp->glx_context)
return;
tp->counter = tp->counter + 1;
if (tp->counter > MI_CYCLES(mi) & !nosplit)
{
int text_length = index_dir(tp->words, (char *) " ");
/* Every now and then, get a new word */
if (text_length == 0)
text_length = strlen(tp->words);
tp->counter = 0;
tp->words += text_length;
text_length = strlen(tp->words);
if (text_length == 0)
{
tp->words_start = tp->words =
getWords(MI_SCREEN(mi), MI_NUM_SCREENS(mi));
}
}
glDrawBuffer(GL_BACK);
glXMakeCurrent(display, window, *(tp->glx_context));
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Draw(tp, display, window);
Animate(tp);
if (MI_IS_DEBUG(mi))
{
(void) fprintf(stderr,
"%s:\n\tcamera_dist=%.1f\n\ttheta=%.1f\n\tphi=%.1f\n\textrusion=%.1f\n\trampl=%.1f\n\trfreq=%.1f\n\tdirection=%d\n",
MI_NAME(mi), tp->camera_dist, tp->theta, tp->phi,
tp->extrusion, tp->rampl,tp->rfreq,tp->direction);
}
}
/*
*-----------------------------------------------------------------------------
* The display is being taken away from us. Free up malloc'ed
* memory and X resources that we've alloc'ed. Only called
* once, we must zap everything for every screen.
*-----------------------------------------------------------------------------
*/
void
release_text3d(ModeInfo * mi)
{
if (text3d != NULL)
{
for (int screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
{
text3dstruct *tp = &text3d[screen];
if (tp->face)
delete tp->face;
}
free(text3d);
text3d = (text3dstruct *) NULL;
}
FreeAllGL(mi);
}
void
refresh_text3d(ModeInfo * mi)
{
/* Do nothing, it will refresh by itself :) */
}
void
change_text3d(ModeInfo * mi)
{
text3dstruct *tp;
if (text3d == NULL) {
return;
}
tp = &text3d[MI_SCREEN(mi)];
if (!tp->glx_context)
return;
glDrawBuffer(GL_BACK);
glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(tp->glx_context));
}
#endif /* MODE_text3d */
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