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OpenGl works now under GTK

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1360 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling 1999-01-10 10:49:57 +00:00
parent 71432ef81f
commit aae24d21a3
24 changed files with 1534 additions and 225 deletions
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6
include/wx/gtk/app.h
View File

@ -31,9 +31,6 @@ class wxLog;
extern wxApp *wxTheApp;
extern GdkVisual *wxVisualSetByExternal;
extern GdkColormap *wxColormapSetByExternal;
//-----------------------------------------------------------------------------
// global functions
//-----------------------------------------------------------------------------
@ -66,8 +63,7 @@ class wxApp: public wxEvtHandler
/* this may have to be overwritten when special, non-default visuals have
to be set. it is also platform dependent as only X knows about displays
and visuals. by standard, this routine looks at wxVisualSetByExternal
which might have been set in the wxModule code of the OpenGL canvas */
and visuals. */
virtual bool InitVisual();
virtual bool OnInit();

6
include/wx/gtk1/app.h
View File

@ -31,9 +31,6 @@ class wxLog;
extern wxApp *wxTheApp;
extern GdkVisual *wxVisualSetByExternal;
extern GdkColormap *wxColormapSetByExternal;
//-----------------------------------------------------------------------------
// global functions
//-----------------------------------------------------------------------------
@ -66,8 +63,7 @@ class wxApp: public wxEvtHandler
/* this may have to be overwritten when special, non-default visuals have
to be set. it is also platform dependent as only X knows about displays
and visuals. by standard, this routine looks at wxVisualSetByExternal
which might have been set in the wxModule code of the OpenGL canvas */
and visuals. */
virtual bool InitVisual();
virtual bool OnInit();

64
src/gtk/app.cpp
View File

@ -44,9 +44,6 @@ wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
extern wxList wxPendingDelete;
extern wxResourceCache *wxTheResourceCache;
GdkVisual *wxVisualSetByExternal = (GdkVisual*) NULL;
GdkColormap *wxColormapSetByExternal = (GdkColormap*) NULL;
unsigned char g_palette[64*3] =
{
0x0, 0x0, 0x0,
@ -174,45 +171,28 @@ wxApp::~wxApp(void)
bool wxApp::InitVisual()
{
if (wxVisualSetByExternal)
{
/* this happens in the wxModule code of the OpenGl canvas.
it chooses the best display for OpenGl and stores it
in wxDisplaySetByExternal. we then have to make it the
default for the system */
gtk_widget_set_default_visual( wxVisualSetByExternal );
}
if (wxColormapSetByExternal)
{
/* OpenGl also gives us a colormap */
gtk_widget_set_default_colormap( wxColormapSetByExternal );
}
else
{
/* this initiates the standard palette as defined by GdkImlib
in the GNOME libraries. it ensures that all GNOME applications
use the same 64 colormap entries on 8-bit displays so you
can use several rather graphics-heavy applications at the
same time */
GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
return TRUE;
for (int i = 0; i < 64; i++)
{
GdkColor col;
col.red = g_palette[i*3 + 0] << 8;
col.green = g_palette[i*3 + 1] << 8;
col.blue = g_palette[i*3 + 2] << 8;
col.pixel = 0;
/* this initiates the standard palette as defined by GdkImlib
in the GNOME libraries. it ensures that all GNOME applications
use the same 64 colormap entries on 8-bit displays so you
can use several rather graphics-heavy applications at the
same time */
GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
gdk_color_alloc( cmap, &col );
}
gtk_widget_set_default_colormap( cmap );
for (int i = 0; i < 64; i++)
{
GdkColor col;
col.red = g_palette[i*3 + 0] << 8;
col.green = g_palette[i*3 + 1] << 8;
col.blue = g_palette[i*3 + 2] << 8;
col.pixel = 0;
gdk_color_alloc( cmap, &col );
}
gtk_widget_set_default_colormap( cmap );
return TRUE;
}
@ -467,15 +447,15 @@ int wxEntry( int argc, char *argv[] )
gtk_init( &argc, &argv );
wxModule::RegisterModules();
if (!wxModule::InitializeModules()) return FALSE;
if (!wxTheApp->InitVisual()) return 0;
wxApp::CommonInit();
if (!wxTheApp->OnInitGui()) return 0;
wxModule::RegisterModules();
if (!wxModule::InitializeModules()) return FALSE;
// Here frames insert themselves automatically
// into wxTopLevelWindows by getting created
// in OnInit().

1
src/gtk/win_gtk.c
View File

@ -288,6 +288,7 @@ gtk_myfixed_realize (GtkWidget *widget)
attributes.event_mask |=
GDK_EXPOSURE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON2_MOTION_MASK |

13
src/gtk/window.cpp
View File

@ -634,6 +634,17 @@ static gint gtk_window_button_release_callback( GtkWidget *widget, GdkEventButto
static gint gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion *gdk_event, wxWindow *win )
{
if (gdk_event->is_hint)
{
int x = 0;
int y = 0;
GdkModifierType state;
gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
gdk_event->x = x;
gdk_event->y = y;
gdk_event->state = state;
}
if (!win->IsOwnGtkWindow( gdk_event->window )) return TRUE;
if (g_blockEventsOnDrag) return TRUE;
@ -646,7 +657,7 @@ static gint gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion
if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
printf( win->GetClassInfo()->GetClassName() );
printf( ".\n" );
*/
*/
wxMouseEvent event( wxEVT_MOTION );
event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);

64
src/gtk1/app.cpp
View File

@ -44,9 +44,6 @@ wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
extern wxList wxPendingDelete;
extern wxResourceCache *wxTheResourceCache;
GdkVisual *wxVisualSetByExternal = (GdkVisual*) NULL;
GdkColormap *wxColormapSetByExternal = (GdkColormap*) NULL;
unsigned char g_palette[64*3] =
{
0x0, 0x0, 0x0,
@ -174,45 +171,28 @@ wxApp::~wxApp(void)
bool wxApp::InitVisual()
{
if (wxVisualSetByExternal)
{
/* this happens in the wxModule code of the OpenGl canvas.
it chooses the best display for OpenGl and stores it
in wxDisplaySetByExternal. we then have to make it the
default for the system */
gtk_widget_set_default_visual( wxVisualSetByExternal );
}
if (wxColormapSetByExternal)
{
/* OpenGl also gives us a colormap */
gtk_widget_set_default_colormap( wxColormapSetByExternal );
}
else
{
/* this initiates the standard palette as defined by GdkImlib
in the GNOME libraries. it ensures that all GNOME applications
use the same 64 colormap entries on 8-bit displays so you
can use several rather graphics-heavy applications at the
same time */
GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
return TRUE;
for (int i = 0; i < 64; i++)
{
GdkColor col;
col.red = g_palette[i*3 + 0] << 8;
col.green = g_palette[i*3 + 1] << 8;
col.blue = g_palette[i*3 + 2] << 8;
col.pixel = 0;
/* this initiates the standard palette as defined by GdkImlib
in the GNOME libraries. it ensures that all GNOME applications
use the same 64 colormap entries on 8-bit displays so you
can use several rather graphics-heavy applications at the
same time */
GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
gdk_color_alloc( cmap, &col );
}
gtk_widget_set_default_colormap( cmap );
for (int i = 0; i < 64; i++)
{
GdkColor col;
col.red = g_palette[i*3 + 0] << 8;
col.green = g_palette[i*3 + 1] << 8;
col.blue = g_palette[i*3 + 2] << 8;
col.pixel = 0;
gdk_color_alloc( cmap, &col );
}
gtk_widget_set_default_colormap( cmap );
return TRUE;
}
@ -467,15 +447,15 @@ int wxEntry( int argc, char *argv[] )
gtk_init( &argc, &argv );
wxModule::RegisterModules();
if (!wxModule::InitializeModules()) return FALSE;
if (!wxTheApp->InitVisual()) return 0;
wxApp::CommonInit();
if (!wxTheApp->OnInitGui()) return 0;
wxModule::RegisterModules();
if (!wxModule::InitializeModules()) return FALSE;
// Here frames insert themselves automatically
// into wxTopLevelWindows by getting created
// in OnInit().

1
src/gtk1/win_gtk.c
View File

@ -288,6 +288,7 @@ gtk_myfixed_realize (GtkWidget *widget)
attributes.event_mask |=
GDK_EXPOSURE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON2_MOTION_MASK |

13
src/gtk1/window.cpp
View File

@ -634,6 +634,17 @@ static gint gtk_window_button_release_callback( GtkWidget *widget, GdkEventButto
static gint gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion *gdk_event, wxWindow *win )
{
if (gdk_event->is_hint)
{
int x = 0;
int y = 0;
GdkModifierType state;
gdk_window_get_pointer(gdk_event->window, &x, &y, &state);
gdk_event->x = x;
gdk_event->y = y;
gdk_event->state = state;
}
if (!win->IsOwnGtkWindow( gdk_event->window )) return TRUE;
if (g_blockEventsOnDrag) return TRUE;
@ -646,7 +657,7 @@ static gint gtk_window_motion_notify_callback( GtkWidget *widget, GdkEventMotion
if (win->GetClassInfo() && win->GetClassInfo()->GetClassName())
printf( win->GetClassInfo()->GetClassName() );
printf( ".\n" );
*/
*/
wxMouseEvent event( wxEVT_MOTION );
event.m_shiftDown = (gdk_event->state & GDK_SHIFT_MASK);

1
utils/glcanvas/Makefile
View File

@ -1 +0,0 @@
include ../../setup/general/makedirs

2
utils/glcanvas/docs/notes.txt
View File

@ -2,4 +2,4 @@ wxGLCanvas
----------
No known issues, though probably palettes aren't correctly
handled under Windows.
handled under Windows. They are ignored under GTK.

16
utils/glcanvas/samples/cube/Makefile Normal file
View File

@ -0,0 +1,16 @@
CC = g++
cube: cube.o glcanvas.o
$(CC) -o cube \
cube.o glcanvas.o \
`wx-config --libs` -lMesaGL -lMesaGLU
cube.o: cube.cpp
$(CC) `wx-config --cflags` -I../../src -c cube.cpp
glcanvas.o: ../../src/glcanvas.cpp
$(CC) `wx-config --cflags` `gtk-config --cflags` -I../../src -c ../../src/glcanvas.cpp
clean:
rm -f *.o cube

11
utils/glcanvas/samples/cube/cube.cpp
View File

@ -29,8 +29,6 @@
#include "cube.h"
IMPLEMENT_APP(MyApp)
// `Main program' equivalent, creating windows and returning main app frame
bool MyApp::OnInit(void)
{
@ -54,7 +52,7 @@ bool MyApp::OnInit(void)
frame->m_canvas = new TestGLCanvas(frame, -1, wxPoint(0, 0), wxSize(200, 200));
InitGL();
// InitGL();
// Show the frame
frame->Show(TRUE);
@ -81,6 +79,8 @@ void MyApp::InitGL(void)
glEnable(GL_LIGHT0);
}
IMPLEMENT_APP(MyApp)
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(wxID_EXIT, MyFrame::OnExit)
END_EVENT_TABLE()
@ -169,8 +169,11 @@ void TestGLCanvas::OnSize(wxSizeEvent& event)
int width, height;
GetClientSize(& width, & height);
if ( GetContext() )
if (GetContext())
{
SetCurrent();
glViewport(0, 0, width, height);
}
}
void TestGLCanvas::OnEraseBackground(wxEraseEvent& event)

16
utils/glcanvas/samples/isosurf/Makefile Normal file
View File

@ -0,0 +1,16 @@
CC = g++
isosurf: isosurf.o glcanvas.o
$(CC) -o isosurf \
isosurf.o glcanvas.o \
`wx-config --libs` -lMesaGL -lMesaGLU
isosurf.o: isosurf.cpp
$(CC) `wx-config --cflags` -I../../src -c isosurf.cpp
glcanvas.o: ../../src/glcanvas.cpp
$(CC) `wx-config --cflags` `gtk-config --cflags` -I../../src -c ../../src/glcanvas.cpp
clean:
rm -f *.o cube

23
utils/glcanvas/samples/penguin/Makefile Normal file
View File

@ -0,0 +1,23 @@
CPP = g++
CC = gcc
Penguin: penguin.o trackball.o lw.o glcanvas.o
$(CPP) -o Penguin \
penguin.o trackball.o lw.o glcanvas.o \
`wx-config --libs` -lMesaGL -lMesaGLU
penguin.o: penguin.cpp
$(CPP) `wx-config --cflags` -I../../src -c penguin.cpp
lw.o: lw.c
$(CC) `wx-config --cflags` -I../../src -c lw.c
trackball.o: trackball.c
$(CC) `wx-config --cflags` -I../../src -c trackball.c
glcanvas.o: ../../src/glcanvas.cpp
$(CPP) `wx-config --cflags` `gtk-config --cflags` -I../../src -c ../../src/glcanvas.cpp
clean:
rm -f *.o penguin

426
utils/glcanvas/samples/penguin/lw.c Normal file
View File

@ -0,0 +1,426 @@
/*
* Copyright (C) 1998 Janne Löf <jlof@mail.student.oulu.fi>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "lw.h"
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#define wxInt32 int
#define wxUint32 unsigned int
#ifndef FALSE
#define FALSE 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#define MK_ID(a,b,c,d) ((((wxUint32)(a))<<24)| \
(((wxUint32)(b))<<16)| \
(((wxUint32)(c))<< 8)| \
(((wxUint32)(d)) ))
#define ID_FORM MK_ID('F','O','R','M')
#define ID_LWOB MK_ID('L','W','O','B')
#define ID_PNTS MK_ID('P','N','T','S')
#define ID_SRFS MK_ID('S','R','F','S')
#define ID_SURF MK_ID('S','U','R','F')
#define ID_POLS MK_ID('P','O','L','S')
#define ID_COLR MK_ID('C','O','L','R')
static wxInt32 read_char(FILE *f)
{
int c = fgetc(f);
return c;
}
static wxInt32 read_short(FILE *f)
{
return (read_char(f)<<8) | read_char(f);
}
static wxInt32 read_long(FILE *f)
{
return (read_char(f)<<24) | (read_char(f)<<16) | (read_char(f)<<8) | read_char(f);
}
static GLfloat read_float(FILE *f)
{
wxInt32 x = read_long(f);
return *(GLfloat*)&x;
}
static int read_string(FILE *f, char *s)
{
int c;
int cnt = 0;
do {
c = read_char(f);
if (cnt < LW_MAX_NAME_LEN)
s[cnt] = c;
else
s[LW_MAX_NAME_LEN-1] = 0;
cnt++;
} while (c != 0);
/* if length of string (including \0) is odd skip another byte */
if (cnt%2) {
read_char(f);
cnt++;
}
return cnt;
}
static void read_srfs(FILE *f, int nbytes, lwObject *lwo)
{
int guess_cnt = lwo->material_cnt;
while (nbytes > 0) {
lwMaterial *material;
/* allocate more memory for materials if needed */
if (guess_cnt <= lwo->material_cnt) {
guess_cnt += guess_cnt/2 + 4;
lwo->material = realloc(lwo->material, sizeof(lwMaterial)*guess_cnt);
}
material = lwo->material + lwo->material_cnt++;
/* read name */
nbytes -= read_string(f,material->name);
/* defaults */
material->r = 0.7;
material->g = 0.7;
material->b = 0.7;
}
lwo->material = realloc(lwo->material, sizeof(lwMaterial)*lwo->material_cnt);
}
static void read_surf(FILE *f, int nbytes, lwObject *lwo)
{
int i;
char name[LW_MAX_NAME_LEN];
lwMaterial *material = NULL;
/* read surface name */
nbytes -= read_string(f,name);
/* find material */
for (i=0; i< lwo->material_cnt; i++) {
if (strcmp(lwo->material[i].name,name) == 0) {
material = &lwo->material[i];
break;
}
}
/* read values */
while (nbytes > 0) {
int id = read_long(f);
int len = read_short(f);
nbytes -= 6 + len + (len%2);
switch (id) {
case ID_COLR:
material->r = read_char(f) / 255.0;
material->g = read_char(f) / 255.0;
material->b = read_char(f) / 255.0;
read_char(f); /* dummy */
break;
default:
fseek(f, len+(len%2), SEEK_CUR);
}
}
}
static void read_pols(FILE *f, int nbytes, lwObject *lwo)
{
int guess_cnt = lwo->face_cnt;
while (nbytes > 0) {
lwFace *face;
int i;
/* allocate more memory for polygons if necessary */
if (guess_cnt <= lwo->face_cnt) {
guess_cnt += guess_cnt + 4;
lwo->face = realloc(lwo->face, sizeof(lwFace)*guess_cnt);
}
face = lwo->face + lwo->face_cnt++;
/* number of points in this face */
face->index_cnt = read_short(f);
nbytes -= 2;
/* allocate space for points */
face->index = calloc(sizeof(int)*face->index_cnt,1);
/* read points in */
for (i=0; i<face->index_cnt; i++) {
face->index[i] = read_short(f);
nbytes -= 2;
}
/* read surface material */
face->material = read_short(f);
nbytes -= 2;
/* skip over detail polygons */
if (face->material < 0) {
int det_cnt;
face->material = -face->material;
det_cnt = read_short(f);
nbytes -= 2;
while (det_cnt-- > 0) {
int cnt = read_short(f);
fseek(f, cnt*2+2, SEEK_CUR);
nbytes -= cnt*2+2;
}
}
face->material -= 1;
}
/* readjust to true size */
lwo->face = realloc(lwo->face, sizeof(lwFace)*lwo->face_cnt);
}
static void read_pnts(FILE *f, int nbytes, lwObject *lwo)
{
int i;
lwo->vertex_cnt = nbytes / 12;
lwo->vertex = calloc(sizeof(GLfloat)*lwo->vertex_cnt*3, 1);
for (i=0; i<lwo->vertex_cnt; i++) {
lwo->vertex[i*3+0] = read_float(f);
lwo->vertex[i*3+1] = read_float(f);
lwo->vertex[i*3+2] = read_float(f);
}
}
int lw_is_lwobject(const char *lw_file)
{
FILE *f = fopen(lw_file, "rb");
if (f) {
wxInt32 form = read_long(f);
wxInt32 nlen = read_long(f);
wxInt32 lwob = read_long(f);
fclose(f);
if (form == ID_FORM && nlen != 0 && lwob == ID_LWOB)
return TRUE;
}
return FALSE;
}
lwObject *lw_object_read(const char *lw_file)
{
FILE *f = NULL;
lwObject *lw_object = NULL;
wxInt32 form_bytes = 0;
wxInt32 read_bytes = 0;
/* open file */
f = fopen(lw_file, "rb");
if (f == NULL) {
return NULL;
}
/* check for headers */
if (read_long(f) != ID_FORM) {
fclose(f);
return NULL;
}
form_bytes = read_long(f);
read_bytes += 4;
if (read_long(f) != ID_LWOB) {
fclose(f);
return NULL;
}
/* create new lwObject */
lw_object = calloc(sizeof(lwObject),1);
/* read chunks */
while (read_bytes < form_bytes) {
wxInt32 id = read_long(f);
wxInt32 nbytes = read_long(f);
read_bytes += 8 + nbytes + (nbytes%2);
switch (id) {
case ID_PNTS:
read_pnts(f, nbytes, lw_object);
break;
case ID_POLS:
read_pols(f, nbytes, lw_object);
break;
case ID_SRFS:
read_srfs(f, nbytes, lw_object);
break;
case ID_SURF:
read_surf(f, nbytes, lw_object);
break;
default:
fseek(f, nbytes + (nbytes%2), SEEK_CUR);
}
}
fclose(f);
return lw_object;
}
void lw_object_free(lwObject *lw_object)
{
if (lw_object->face) {
int i;
for (i=0; i<lw_object->face_cnt; i++)
free(lw_object->face[i].index);
free(lw_object->face);
}
free(lw_object->material);
free(lw_object->vertex);
free(lw_object);
}
#define PX(i) (lw_object->vertex[face->index[i]*3+0])
#define PY(i) (lw_object->vertex[face->index[i]*3+1])
#define PZ(i) (lw_object->vertex[face->index[i]*3+2])
void lw_object_show(const lwObject *lw_object)
{
int i,j;
int prev_index_cnt = -1;
int prev_material = -1;
GLfloat prev_nx = 0;
GLfloat prev_ny = 0;
GLfloat prev_nz = 0;
for (i=0; i<lw_object->face_cnt; i++) {
GLfloat ax,ay,az,bx,by,bz,nx,ny,nz,r;
const lwFace *face = lw_object->face+i;
/* ignore faces with less than 3 points */
if (face->index_cnt < 3)
continue;
/* calculate normal */
ax = PX(1) - PX(0);
ay = PY(1) - PY(0);
az = PZ(1) - PZ(0);
bx = PX(face->index_cnt-1) - PX(0);
by = PY(face->index_cnt-1) - PY(0);
bz = PZ(face->index_cnt-1) - PZ(0);
nx = ay * bz - az * by;
ny = az * bx - ax * bz;
nz = ax * by - ay * bx;
r = sqrt(nx*nx + ny*ny + nz*nz);
if (r < 0.000001) /* avoid division by zero */
continue;
nx /= r;
ny /= r;
nz /= r;
/* glBegin/glEnd */
if (prev_index_cnt != face->index_cnt || prev_index_cnt > 4) {
if (prev_index_cnt > 0) glEnd();
prev_index_cnt = face->index_cnt;
switch (face->index_cnt) {
case 3:
glBegin(GL_TRIANGLES);
break;
case 4:
glBegin(GL_QUADS);
break;
default:
glBegin(GL_POLYGON);
}
}
/* update material if necessary */
if (prev_material != face->material) {
prev_material = face->material;
glColor3f(lw_object->material[face->material].r,
lw_object->material[face->material].g,
lw_object->material[face->material].b);
}
/* update normal if necessary */
if (nx != prev_nx || ny != prev_ny || nz != prev_nz) {
prev_nx = nx;
prev_ny = ny;
prev_nz = nz;
glNormal3f(nx,ny,nz);
}
/* draw polygon/triangle/quad */
for (j=0; j<face->index_cnt; j++)
glVertex3f(PX(j),PY(j),PZ(j));
}
/* if glBegin was called call glEnd */
if (prev_index_cnt > 0)
glEnd();
}
GLfloat lw_object_radius(const lwObject *lwo)
{
int i;
double max_radius = 0.0;
for (i=0; i<lwo->vertex_cnt; i++) {
GLfloat *v = &lwo->vertex[i*3];
double r = v[0]*v[0] + v[1]*v[1] + v[2]*v[2];
if (r > max_radius)
max_radius = r;
}
return sqrt(max_radius);
}
void lw_object_scale(lwObject *lwo, GLfloat scale)
{
int i;
for (i=0; i<lwo->vertex_cnt; i++) {
lwo->vertex[i*3+0] *= scale;
lwo->vertex[i*3+1] *= scale;
lwo->vertex[i*3+2] *= scale;
}
}

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/*
* Copyright (C) 1998 Janne Löf <jlof@mail.student.oulu.fi>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef LW_H
#define LW_H
#include <GL/gl.h>
#define LW_MAX_POINTS 200
#define LW_MAX_NAME_LEN 500
typedef struct {
char name[LW_MAX_NAME_LEN];
GLfloat r,g,b;
} lwMaterial;
typedef struct {
int material; /* material of this face */
int index_cnt; /* number of vertices */
int *index; /* index to vertex */
float *texcoord; /* u,v texture coordinates */
} lwFace;
typedef struct {
int face_cnt;
lwFace *face;
int material_cnt;
lwMaterial *material;
int vertex_cnt;
GLfloat *vertex;
} lwObject;
int lw_is_lwobject(const char *lw_file);
lwObject *lw_object_read(const char *lw_file);
void lw_object_free( lwObject *lw_object);
void lw_object_show(const lwObject *lw_object);
GLfloat lw_object_radius(const lwObject *lw_object);
void lw_object_scale (lwObject *lw_object, GLfloat scale);
#endif /* LW_H */

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/////////////////////////////////////////////////////////////////////////////
// Name: penguin.cpp
// Purpose: wxGLCanvas demo program
// Author: Robert Roebling
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation
#pragma interface
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif
#include "penguin.h"
#include <GL/glu.h>
#define VIEW_ASPECT 1.3
/* `Main program' equivalent, creating windows and returning main app frame */
bool MyApp::OnInit(void)
{
/* Create the main frame window */
MyFrame *frame = new MyFrame(NULL, "wxWindows OpenGL Demo", wxPoint(50, 50), wxSize(400, 300));
/* Make a menubar */
wxMenu *fileMenu = new wxMenu;
fileMenu->Append(wxID_EXIT, "E&xit");
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(fileMenu, "&File");
frame->SetMenuBar(menuBar);
frame->m_canvas = new TestGLCanvas(frame, -1, wxPoint(0, 0), wxSize(200, 200));
/* Load file wiht mesh data */
frame->m_canvas->LoadLWO( "penguin.lwo" );
/* Show the frame */
frame->Show(TRUE);
return TRUE;
}
IMPLEMENT_APP(MyApp)
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(wxID_EXIT, MyFrame::OnExit)
END_EVENT_TABLE()
/* My frame constructor */
MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos,
const wxSize& size, long style):
wxFrame(frame, -1, title, pos, size, style)
{
m_canvas = NULL;
}
/* Intercept menu commands */
void MyFrame::OnExit(wxCommandEvent& event)
{
Destroy();
}
bool MyFrame::OnClose(void)
{
return TRUE;
}
BEGIN_EVENT_TABLE(TestGLCanvas, wxGLCanvas)
EVT_SIZE(TestGLCanvas::OnSize)
EVT_PAINT(TestGLCanvas::OnPaint)
EVT_ERASE_BACKGROUND(TestGLCanvas::OnEraseBackground)
EVT_MOUSE_EVENTS(TestGLCanvas::OnMouse)
END_EVENT_TABLE()
TestGLCanvas::TestGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name):
wxGLCanvas(parent, id, pos, size, style, name)
{
block = FALSE;
}
TestGLCanvas::~TestGLCanvas(void)
{
/* destroy mesh */
lw_object_free(info.lwobject);
}
void TestGLCanvas::OnPaint( wxPaintEvent& event )
{
/* must always be here */
wxPaintDC dc(this);
if (!GetContext()) return;
SetCurrent();
/* initialize OpenGL */
if (info.do_init == TRUE)
{
InitGL();
info.do_init = FALSE;
}
/* view */
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
gluPerspective( info.zoom, VIEW_ASPECT, 1, 100 );
glMatrixMode( GL_MODELVIEW );
/* clear */
glClearColor( .3, .4, .6, 1 );
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
/* transformations */
GLfloat m[4][4];
glLoadIdentity();
glTranslatef( 0, 0, -30 );
build_rotmatrix( m,info.quat );
glMultMatrixf( &m[0][0] );
/* draw object */
lw_object_show( info.lwobject );
/* flush */
glFlush();
/* swap */
SwapBuffers();
}
void TestGLCanvas::OnSize(wxSizeEvent& event)
{
int width, height;
GetClientSize(& width, & height);
if (GetContext())
{
SetCurrent();
glViewport(0, 0, width, height);
}
}
void TestGLCanvas::OnEraseBackground(wxEraseEvent& event)
{
/* Do nothing, to avoid flashing on MSW */
}
void TestGLCanvas::LoadLWO(const wxString &filename)
{
/* test if lightwave object */
if (!lw_is_lwobject(filename)) return;
/* read lightwave object */
lwObject *lwobject = lw_object_read(filename);
/* scale */
lw_object_scale(lwobject, 10.0 / lw_object_radius(lwobject));
/* set up mesh info */
info.do_init = TRUE;
info.lwobject = lwobject;
info.beginx = 0;
info.beginy = 0;
info.zoom = 45;
trackball( info.quat, 0.0, 0.0, 0.0, 0.0 );
}
void TestGLCanvas::OnMouse( wxMouseEvent& event )
{
if (event.Dragging())
{
/* drag in progress, simulate trackball */
float spin_quat[4];
trackball(spin_quat,
(2.0*info.beginx - m_width) / m_width,
( m_height - 2.0*info.beginy) / m_height,
( 2.0*event.GetX() - m_width) / m_width,
( m_height - 2.0*event.GetY()) / m_height);
add_quats( spin_quat, info.quat, info.quat );
/* orientation has changed, redraw mesh */
Refresh();
}
info.beginx = event.GetX();
info.beginy = event.GetY();
}
void TestGLCanvas::InitGL(void)
{
GLfloat light0_pos[4] = { -50.0, 50.0, 0.0, 0.0 };
GLfloat light0_color[4] = { .6, .6, .6, 1.0 }; /* white light */
GLfloat light1_pos[4] = { 50.0, 50.0, 0.0, 0.0 };
GLfloat light1_color[4] = { .4, .4, 1, 1.0 }; /* cold blue light */
/* remove back faces */
glDisable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
/* speedups */
glEnable(GL_DITHER);
glShadeModel(GL_SMOOTH);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
glHint(GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
/* light */
glLightfv(GL_LIGHT0, GL_POSITION, light0_pos);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_color);
glLightfv(GL_LIGHT1, GL_POSITION, light1_pos);
glLightfv(GL_LIGHT1, GL_DIFFUSE, light1_color);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glEnable(GL_LIGHTING);
glColorMaterial(GL_FRONT_AND_BACK,GL_AMBIENT_AND_DIFFUSE);
glEnable(GL_COLOR_MATERIAL);
}

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/////////////////////////////////////////////////////////////////////////////
// Name: penguin.h
// Purpose: wxGLCanvas demo program
// Author: Robert Roebling
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_PENGUIN_H_
#define _WX_PENGUIN_H_
#include "wx/defs.h"
#include "wx/app.h"
#include "wx/menu.h"
#include "wx/dcclient.h"
#include "glcanvas.h"
extern "C" {
#include "lw.h"
#include "trackball.h"
}
/* information needed to display lightwave mesh */
typedef struct
{
gint do_init; /* true if initgl not yet called */
lwObject *lwobject; /* lightwave object mesh */
float beginx,beginy; /* position of mouse */
float quat[4]; /* orientation of object */
float zoom; /* field of view in degrees */
} mesh_info;
/* Define a new application type */
class MyApp: public wxApp
{
public:
bool OnInit(void);
};
/* Define a new frame type */
class TestGLCanvas;
class MyFrame: public wxFrame
{
public:
MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos, const wxSize& size,
long style = wxDEFAULT_FRAME_STYLE);
void OnExit(wxCommandEvent& event);
bool OnClose(void);
public:
TestGLCanvas* m_canvas;
DECLARE_EVENT_TABLE()
};
class TestGLCanvas: public wxGLCanvas
{
public:
TestGLCanvas(wxWindow *parent, const wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0, const wxString& name = "TestGLCanvas");
~TestGLCanvas(void);
void OnPaint(wxPaintEvent& event);
void OnSize(wxSizeEvent& event);
void OnEraseBackground(wxEraseEvent& event);
void LoadLWO( const wxString &filename);
void OnMouse( wxMouseEvent& event );
void InitGL(void);
mesh_info info;
bool block;
DECLARE_EVENT_TABLE()
};
#endif

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/*
* (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.
*/
/*
* Trackball code:
*
* Implementation of a virtual trackball.
* Implemented by Gavin Bell, lots of ideas from Thant Tessman and
* the August '88 issue of Siggraph's "Computer Graphics," pp. 121-129.
*
* Vector manip code:
*
* Original code from:
* David M. Ciemiewicz, Mark Grossman, Henry Moreton, and Paul Haeberli
*
* Much mucking with by:
* Gavin Bell
*/
#include <math.h>
#include "trackball.h"
/*
* This size should really be based on the distance from the center of
* rotation to the point on the object underneath the mouse. That
* point would then track the mouse as closely as possible. This is a
* simple example, though, so that is left as an Exercise for the
* Programmer.
*/
#define TRACKBALLSIZE (0.8)
/*
* Local function prototypes (not defined in trackball.h)
*/
static float tb_project_to_sphere(float, float, float);
static void normalize_quat(float [4]);
void
vzero(float *v)
{
v[0] = 0.0;
v[1] = 0.0;
v[2] = 0.0;
}
void
vset(float *v, float x, float y, float z)
{
v[0] = x;
v[1] = y;
v[2] = z;
}
void
vsub(const float *src1, const float *src2, float *dst)
{
dst[0] = src1[0] - src2[0];
dst[1] = src1[1] - src2[1];
dst[2] = src1[2] - src2[2];
}
void
vcopy(const float *v1, float *v2)
{
register int i;
for (i = 0 ; i < 3 ; i++)
v2[i] = v1[i];
}
void
vcross(const float *v1, const float *v2, float *cross)
{
float temp[3];
temp[0] = (v1[1] * v2[2]) - (v1[2] * v2[1]);
temp[1] = (v1[2] * v2[0]) - (v1[0] * v2[2]);
temp[2] = (v1[0] * v2[1]) - (v1[1] * v2[0]);
vcopy(temp, cross);
}
float
vlength(const float *v)
{
return sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
}
void
vscale(float *v, float div)
{
v[0] *= div;
v[1] *= div;
v[2] *= div;
}
void
vnormal(float *v)
{
vscale(v,1.0/vlength(v));
}
float
vdot(const float *v1, const float *v2)
{
return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2];
}
void
vadd(const float *src1, const float *src2, float *dst)
{
dst[0] = src1[0] + src2[0];
dst[1] = src1[1] + src2[1];
dst[2] = src1[2] + src2[2];
}
/*
* Ok, simulate a track-ball. Project the points onto the virtual
* trackball, then figure out the axis of rotation, which is the cross
* product of P1 P2 and O P1 (O is the center of the ball, 0,0,0)
* Note: This is a deformed trackball-- is a trackball in the center,
* but is deformed into a hyperbolic sheet of rotation away from the
* center. This particular function was chosen after trying out
* several variations.
*
* It is assumed that the arguments to this routine are in the range
* (-1.0 ... 1.0)
*/
void
trackball(float q[4], float p1x, float p1y, float p2x, float p2y)
{
float a[3]; /* Axis of rotation */
float phi; /* how much to rotate about axis */
float p1[3], p2[3], d[3];
float t;
if (p1x == p2x && p1y == p2y) {
/* Zero rotation */
vzero(q);
q[3] = 1.0;
return;
}
/*
* First, figure out z-coordinates for projection of P1 and P2 to
* deformed sphere
*/
vset(p1,p1x,p1y,tb_project_to_sphere(TRACKBALLSIZE,p1x,p1y));
vset(p2,p2x,p2y,tb_project_to_sphere(TRACKBALLSIZE,p2x,p2y));
/*
* Now, we want the cross product of P1 and P2
*/
vcross(p2,p1,a);
/*
* Figure out how much to rotate around that axis.
*/
vsub(p1,p2,d);
t = vlength(d) / (2.0*TRACKBALLSIZE);
/*
* Avoid problems with out-of-control values...
*/
if (t > 1.0) t = 1.0;
if (t < -1.0) t = -1.0;
phi = 2.0 * asin(t);
axis_to_quat(a,phi,q);
}
/*
* Given an axis and angle, compute quaternion.
*/
void
axis_to_quat(float a[3], float phi, float q[4])
{
vnormal(a);
vcopy(a,q);
vscale(q,sin(phi/2.0));
q[3] = cos(phi/2.0);
}
/*
* Project an x,y pair onto a sphere of radius r OR a hyperbolic sheet
* if we are away from the center of the sphere.
*/
static float
tb_project_to_sphere(float r, float x, float y)
{
float d, t, z;
d = sqrt(x*x + y*y);
if (d < r * 0.70710678118654752440) { /* Inside sphere */
z = sqrt(r*r - d*d);
} else { /* On hyperbola */
t = r / 1.41421356237309504880;
z = t*t / d;
}
return z;
}
/*
* Given two rotations, e1 and e2, expressed as quaternion rotations,
* figure out the equivalent single rotation and stuff it into dest.
*
* This routine also normalizes the result every RENORMCOUNT times it is
* called, to keep error from creeping in.
*
* NOTE: This routine is written so that q1 or q2 may be the same
* as dest (or each other).
*/
#define RENORMCOUNT 97
void
add_quats(float q1[4], float q2[4], float dest[4])
{
static int count=0;
float t1[4], t2[4], t3[4];
float tf[4];
vcopy(q1,t1);
vscale(t1,q2[3]);
vcopy(q2,t2);
vscale(t2,q1[3]);
vcross(q2,q1,t3);
vadd(t1,t2,tf);
vadd(t3,tf,tf);
tf[3] = q1[3] * q2[3] - vdot(q1,q2);
dest[0] = tf[0];
dest[1] = tf[1];
dest[2] = tf[2];
dest[3] = tf[3];
if (++count > RENORMCOUNT) {
count = 0;
normalize_quat(dest);
}
}
/*
* Quaternions always obey: a^2 + b^2 + c^2 + d^2 = 1.0
* If they don't add up to 1.0, dividing by their magnitued will
* renormalize them.
*
* Note: See the following for more information on quaternions:
*
* - Shoemake, K., Animating rotation with quaternion curves, Computer
* Graphics 19, No 3 (Proc. SIGGRAPH'85), 245-254, 1985.
* - Pletinckx, D., Quaternion calculus as a basic tool in computer
* graphics, The Visual Computer 5, 2-13, 1989.
*/
static void
normalize_quat(float q[4])
{
int i;
float mag;
mag = (q[0]*q[0] + q[1]*q[1] + q[2]*q[2] + q[3]*q[3]);
for (i = 0; i < 4; i++) q[i] /= mag;
}
/*
* Build a rotation matrix, given a quaternion rotation.
*
*/
void
build_rotmatrix(float m[4][4], float q[4])
{
m[0][0] = 1.0 - 2.0 * (q[1] * q[1] + q[2] * q[2]);
m[0][1] = 2.0 * (q[0] * q[1] - q[2] * q[3]);
m[0][2] = 2.0 * (q[2] * q[0] + q[1] * q[3]);
m[0][3] = 0.0;
m[1][0] = 2.0 * (q[0] * q[1] + q[2] * q[3]);
m[1][1]= 1.0 - 2.0 * (q[2] * q[2] + q[0] * q[0]);
m[1][2] = 2.0 * (q[1] * q[2] - q[0] * q[3]);
m[1][3] = 0.0;
m[2][0] = 2.0 * (q[2] * q[0] - q[1] * q[3]);
m[2][1] = 2.0 * (q[1] * q[2] + q[0] * q[3]);
m[2][2] = 1.0 - 2.0 * (q[1] * q[1] + q[0] * q[0]);
m[2][3] = 0.0;
m[3][0] = 0.0;
m[3][1] = 0.0;
m[3][2] = 0.0;
m[3][3] = 1.0;
}

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/*
* (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.
*/
/*
* trackball.h
* A virtual trackball implementation
* Written by Gavin Bell for Silicon Graphics, November 1988.
*/
/*
* Pass the x and y coordinates of the last and current positions of
* the mouse, scaled so they are from (-1.0 ... 1.0).
*
* The resulting rotation is returned as a quaternion rotation in the
* first paramater.
*/
void
trackball(float q[4], float p1x, float p1y, float p2x, float p2y);
/*
* Given two quaternions, add them together to get a third quaternion.
* Adding quaternions to get a compound rotation is analagous to adding
* translations to get a compound translation. When incrementally
* adding rotations, the first argument here should be the new
* rotation, the second and third the total rotation (which will be
* over-written with the resulting new total rotation).
*/
void
add_quats(float *q1, float *q2, float *dest);
/*
* A useful function, builds a rotation matrix in Matrix based on
* given quaternion.
*/
void
build_rotmatrix(float m[4][4], float q[4]);
/*
* This function computes a quaternion based on an axis (defined by
* the given vector) and an angle about which to rotate. The angle is
* expressed in radians. The result is put into the third argument.
*/
void
axis_to_quat(float a[3], float phi, float q[4]);

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include ../../../setup/general/makedirs

67
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#
# wxGLCanvas source makefile for Unix
#
# Copyright 1998, Robert Roebling
#
# wxWindows base directory
WXBASEDIR=@WXBASEDIR@
# set the OS type for compilation
OS=@OS@
# compile a library only
RULE=gslib
# needed for unactivated
NONE=
# define library name
LIB_TARGET=wx_opengl_gtk
LIB_MAJOR=1
LIB_MINOR=0
# define library sources
LIB_CPP_SRC= \
\
glcanvas.cpp
#define library objects
LIB_OBJ= \
\
$(LIB_CPP_SRC:.cpp=.o)
all::
clean::
#additional things needed for compile
ADD_COMPILE=
# include the definitions now
include ../../../../template.mak
install::
@echo "Installing library files and headers for libwx_opengl_gtk.."
@echo " Creating directory.."
@$(WXBASEDIR)/mkinstalldirs /usr/local/include/wx_opengl
@echo " Copying headers from /include/wx"
@cd $(WXBASEDIR)/utils/glcanvas/src ; \
for f in *.h ; do \
rm -f /usr/local/include/wx_opengl/$$f ; \
$(INSTALL_DATA) $$f /usr/local/include/wx_opengl/$$f ; \
done
@echo " Copying static library files to /usr/local/lib"
@cd $(WXBASEDIR)/lib/$(OS) ; \
for f in libwx_opengl_gtk.a ; do \
rm -f /usr/local/lib/$$f ; \
$(INSTALL_DATA) $$f /usr/local/lib/$$f ; \
done
@echo " Copying shared libraries to /usr/local/lib"
@cd $(WXBASEDIR)/lib/$(OS) ; \
for f in libwx_opengl_gtk.so* ; do \
rm -f /usr/local/lib/$$f ; \
$(INSTALL_PROGRAM) $$f /usr/local/lib/$$f ; \
done

211
utils/glcanvas/src/glcanvas.cpp
View File

@ -20,17 +20,19 @@
#include "wx/module.h"
#include "wx/app.h"
extern "C" {
#include "gtk/gtk.h"
#include "gdk/gdk.h"
extern "C" {
#include "gdk/gdkx.h"
}
#include "wx/gtk/win_gtk.h"
//---------------------------------------------------------------------------
// global variables
// global data
//---------------------------------------------------------------------------
XVisualInfo *g_visual_info = (XVisualInfo*) NULL;
XVisualInfo *g_vi = (XVisualInfo*) NULL;
//---------------------------------------------------------------------------
// wxGLContext
@ -41,25 +43,25 @@ IMPLEMENT_CLASS(wxGLContext,wxObject)
wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
{
m_window = win;
m_widget = win->m_wxwindow;
m_widget = ((wxGLCanvas*)win)->m_glWidget;
wxCHECK_RET( g_visual_info != NULL, "invalid visual for OpenGl" );
wxCHECK_RET( g_vi, "invalid visual for OpenGl" );
m_glContext = glXCreateContext( GDK_DISPLAY(), g_visual_info, None, GL_TRUE );
m_glContext = glXCreateContext( GDK_DISPLAY(), g_vi, None, GL_TRUE );
wxCHECK_RET( m_glContext != NULL, "Couldn't create OpenGl context" );
glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
}
wxGLContext::~wxGLContext()
{
if (m_glContext)
{
glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(m_widget->window), m_glContext );
if (!m_glContext) return;
glXDestroyContext( GDK_DISPLAY(), m_glContext );
if (m_glContext == glXGetCurrentContext())
{
glXMakeCurrent( GDK_DISPLAY(), None, NULL);
}
glXDestroyContext( GDK_DISPLAY(), m_glContext );
}
void wxGLContext::SwapBuffers()
@ -116,12 +118,71 @@ BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
EVT_SIZE(wxGLCanvas::OnSize)
END_EVENT_TABLE()
wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
int *WXUNUSED(attribList), const wxPalette& palette):
wxScrolledWindow(parent, id, pos, size, style, name)
wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size,
long style, const wxString& name,
int *attribList,
const wxPalette& palette )
{
Create( parent, id, pos, size, style, name, attribList, palette );
}
bool wxGLCanvas::Create( wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size,
long style, const wxString& name,
int *attribList,
const wxPalette& palette )
{
if (!attribList)
{
int data[] = { GLX_RGBA,
GLX_DOUBLEBUFFER,
GLX_DEPTH_SIZE, 1,
None };
attribList = (int*) data;
}
Display *dpy = GDK_DISPLAY();
g_vi = glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
GdkVisual *visual = gdkx_visual_get( g_vi->visualid );
GdkColormap *colormap = gdk_colormap_new( gdkx_visual_get(g_vi->visualid), TRUE );
gtk_widget_push_colormap( colormap );
gtk_widget_push_visual( visual );
m_glWidget = gtk_drawing_area_new();
gtk_widget_set_events( m_glWidget,
GDK_EXPOSURE_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_POINTER_MOTION_MASK |
GDK_BUTTON_MOTION_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON2_MOTION_MASK |
GDK_BUTTON3_MOTION_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK );
gtk_widget_pop_visual();
gtk_widget_pop_colormap();
wxScrolledWindow::Create( parent, id, pos, size, style, name );
gtk_myfixed_put( GTK_MYFIXED(m_wxwindow), m_glWidget, 0, 0 );
gtk_widget_show( m_glWidget );
m_glContext = new wxGLContext( TRUE, this, palette );
XFree( g_vi );
g_vi = (XVisualInfo*) NULL;
return TRUE;
}
wxGLCanvas::~wxGLCanvas()
@ -137,13 +198,12 @@ void wxGLCanvas::SwapBuffers()
void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
{
int width, height;
GetClientSize(& width, & height);
if (m_glContext)
GetClientSize( &width, &height );
if (m_glContext && GTK_WIDGET_REALIZED(m_glWidget) )
{
m_glContext->SetCurrent();
glViewport(0, 0, (GLint)width, (GLint)height);
SetCurrent();
glViewport(0, 0, (GLint)width, (GLint)height );
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
@ -161,39 +221,92 @@ void wxGLCanvas::SetColour( const char *colour )
if (m_glContext) m_glContext->SetColour( colour );
}
//--------------------------------------------------------------------
// wxGLModule
//--------------------------------------------------------------------
class wxGLModule : public wxModule
void wxGLCanvas::SetSize( int x, int y, int width, int height, int sizeFlags )
{
public:
virtual bool OnInit();
virtual void OnExit();
if (m_resizing) return; // I don't like recursions
m_resizing = TRUE;
private:
DECLARE_DYNAMIC_CLASS(wxGLModule)
};
if (m_parent->m_wxwindow == NULL) // i.e. wxNotebook
{
// don't set the size for children of wxNotebook, just take the values.
m_x = x;
m_y = y;
m_width = width;
m_height = height;
}
else
{
int old_width = m_width;
int old_height = m_height;
IMPLEMENT_DYNAMIC_CLASS(wxGLModule, wxModule)
if ((sizeFlags & wxSIZE_USE_EXISTING) == wxSIZE_USE_EXISTING)
{
if (x != -1) m_x = x;
if (y != -1) m_y = y;
if (width != -1) m_width = width;
if (height != -1) m_height = height;
}
else
{
m_x = x;
m_y = y;
m_width = width;
m_height = height;
}
bool wxGLModule::OnInit()
{
int data[] = { GLX_RGBA,GLX_RED_SIZE,1,GLX_GREEN_SIZE,1,
GLX_BLUE_SIZE,1,GLX_DOUBLEBUFFER,None};
if ((sizeFlags & wxSIZE_AUTO_WIDTH) == wxSIZE_AUTO_WIDTH)
{
if (width == -1) m_width = 80;
}
g_visual_info = glXChooseVisual( GDK_DISPLAY(), DefaultScreen(GDK_DISPLAY()), data );
wxCHECK_MSG( g_visual_info != NULL, FALSE, "Couldn't choose visual for OpenGl" );
wxVisualSetByExternal = gdkx_visual_get(g_visual_info->visualid);
wxColormapSetByExternal = gdk_colormap_new( gdkx_visual_get(g_visual_info->visualid), TRUE );
return TRUE;
if ((sizeFlags & wxSIZE_AUTO_HEIGHT) == wxSIZE_AUTO_HEIGHT)
{
if (height == -1) m_height = 26;
}
if ((m_minWidth != -1) && (m_width < m_minWidth)) m_width = m_minWidth;
if ((m_minHeight != -1) && (m_height < m_minHeight)) m_height = m_minHeight;
if ((m_maxWidth != -1) && (m_width > m_maxWidth)) m_width = m_maxWidth;
if ((m_maxHeight != -1) && (m_height > m_maxHeight)) m_height = m_maxHeight;
wxPoint pt( m_parent->GetClientAreaOrigin() );
gtk_myfixed_move( GTK_MYFIXED(m_parent->m_wxwindow), m_widget, m_x+pt.x, m_y+pt.y );
if ((old_width != m_width) || (old_height != m_height))
{
gtk_widget_set_usize( m_widget, m_width, m_height );
gtk_drawing_area_size( GTK_DRAWING_AREA(m_glWidget), m_width, m_height );
GtkAllocation allo;
allo.x = 0;
allo.y = 0;
allo.width = m_width;
allo.height = m_height;
gtk_widget_size_allocate( m_glWidget, &allo );
}
}
m_sizeSet = TRUE;
wxSizeEvent event( wxSize(m_width,m_height), GetId() );
event.SetEventObject( this );
GetEventHandler()->ProcessEvent( event );
m_resizing = FALSE;
}
void wxGLModule::OnExit()
void wxGLCanvas::SetSize( int width, int height )
{
SetSize( -1, -1, width, height, wxSIZE_USE_EXISTING );
}
GtkWidget *wxGLCanvas::GetConnectWidget()
{
return m_glWidget;
}
bool wxGLCanvas::IsOwnGtkWindow( GdkWindow *window )
{
return (window == m_glWidget->window);
}

33
utils/glcanvas/src/glcanvas.h
View File

@ -19,9 +19,11 @@
#include "wx/defs.h"
#include "wx/scrolwin.h"
extern "C" {
#include "GL/gl.h"
#include "GL/glx.h"
#include "GL/glu.h"
}
//---------------------------------------------------------------------------
// classes
@ -75,9 +77,20 @@ class wxGLCanvas: public wxScrolledWindow
DECLARE_CLASS(wxGLCanvas)
public:
wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize, long style = 0,
const wxString& name = "GLCanvas", int *attribList = 0, const wxPalette& palette = wxNullPalette);
wxGLCanvas( wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0, const wxString& name = "GLCanvas",
int *attribList = (int*) NULL,
const wxPalette& palette = wxNullPalette );
bool Create( wxWindow *parent, wxWindowID id = -1,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = 0, const wxString& name = "GLCanvas",
int *attribList = (int*) NULL,
const wxPalette& palette = wxNullPalette );
~wxGLCanvas();
void SetCurrent();
@ -86,11 +99,19 @@ class wxGLCanvas: public wxScrolledWindow
void OnSize(wxSizeEvent& event);
inline wxGLContext* GetContext() const { return m_glContext; }
inline wxGLContext* GetContext() const { return m_glContext; }
protected:
// implementation
wxGLContext* m_glContext; // this is typedef-ed ptr, in fact
virtual void SetSize( int x, int y, int width, int height,
int sizeFlags = wxSIZE_AUTO );
virtual void SetSize( int width, int height );
virtual GtkWidget *GetConnectWidget();
bool IsOwnGtkWindow( GdkWindow *window );
wxGLContext *m_glContext;
GtkWidget *m_glWidget;
DECLARE_EVENT_TABLE()
};