/////////////////////////////////////////////////////////////////////////////
// Name: cube.cpp
// Purpose: wxGLCanvas demo program
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id: cube.cpp,v 1.9 2002/08/31 22:30:50 GD Exp $
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#if defined(__GNUG__) && !defined(__APPLE__)
#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 "wx/log.h"
#if !wxUSE_GLCANVAS
#error Please set wxUSE_GLCANVAS to 1 in setup.h.
#endif
#include "cube.h"
#ifndef __WXMSW__ // for wxStopWatch, see remark below
#if defined(__WXMAC__) && !defined(__DARWIN__)
#include <utime.h>
#include <unistd.h>
#else
#include <sys/time.h>
#include <sys/unistd.h>
#endif
#else
#include <sys/timeb.h>
#endif
#define ID_NEW_WINDOW 10000
#define ID_DEF_ROTATE_LEFT_KEY 10001
#define ID_DEF_ROTATE_RIGHT_KEY 10002
/*----------------------------------------------------------
Control to get a keycode
----------------------------------------------------------*/
class ScanCodeCtrl : public wxTextCtrl
{
public:
ScanCodeCtrl( wxWindow* parent, wxWindowID id, int code,
const wxPoint& pos, const wxSize& size );
void OnChar( wxKeyEvent& event ) { } /* do nothing */
void OnKeyDown(wxKeyEvent& event);
private:
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
BEGIN_EVENT_TABLE( ScanCodeCtrl, wxTextCtrl )
EVT_CHAR( ScanCodeCtrl::OnChar )
EVT_KEY_DOWN( ScanCodeCtrl::OnKeyDown )
END_EVENT_TABLE()
ScanCodeCtrl::ScanCodeCtrl( wxWindow* parent, wxWindowID id, int code,
const wxPoint& pos, const wxSize& size )
: wxTextCtrl( parent, id, "", pos, size )
{ wxString buf;
buf.Printf( "0x%04x", code );
SetValue( buf );
}
void ScanCodeCtrl::OnKeyDown( wxKeyEvent& event )
{ wxString buf;
buf.Printf( "0x%04x", event.KeyCode() );
SetValue( buf );
}
/*------------------------------------------------------------------
Dialog for defining a keypress
-------------------------------------------------------------------*/
class ScanCodeDialog : public wxDialog
{
public:
ScanCodeDialog( wxWindow* parent, wxWindowID id, const int code,
const wxString &descr, const wxString& title );
int GetValue();
private:
ScanCodeCtrl *m_ScanCode;
wxTextCtrl *m_Description;
};
ScanCodeDialog::ScanCodeDialog( wxWindow* parent, wxWindowID id,
const int code, const wxString &descr, const wxString& title )
: wxDialog( parent, id, title, wxPoint(-1, -1), wxSize(96*2,76*2) )
{
new wxStaticText( this, -1, "Scancode", wxPoint(4*2,3*2),
wxSize(31*2,12*2) );
m_ScanCode = new ScanCodeCtrl( this, -1, code, wxPoint(37*2,6*2),
wxSize(53*2,14*2) );
new wxStaticText( this, -1, "Description", wxPoint(4*2,24*2),
wxSize(32*2,12*2) );
m_Description = new wxTextCtrl( this, -1, descr, wxPoint(37*2,27*2),
wxSize(53*2,14*2) );
new wxButton( this, wxID_OK, "Ok", wxPoint(20*2,50*2), wxSize(20*2,13*2) );
new wxButton( this, wxID_CANCEL, "Cancel", wxPoint(44*2,50*2),
wxSize(25*2,13*2) );
}
int ScanCodeDialog::GetValue()
{
int code;
wxString buf = m_ScanCode->GetValue();
sscanf( buf.c_str(), "%i", &code );
return( code );
}
/*----------------------------------------------------------------------
Utility function to get the elapsed time (in msec) since a given point
in time (in sec) (because current version of wxGetElapsedTime doesn´t
works right with glibc-2.1 and linux, at least for me)
-----------------------------------------------------------------------*/
unsigned long wxStopWatch( unsigned long *sec_base )
{
unsigned long secs,msec;
#if defined(__WXMSW__)
struct timeb tb;
ftime( &tb );
secs = tb.time;
msec = tb.millitm;
#elif defined(__WXMAC__) && !defined(__DARWIN__)
wxLongLong tl = wxGetLocalTimeMillis();
secs = (unsigned long) (tl.GetValue() / 1000);
msec = (unsigned long) (tl.GetValue() - secs*1000);
#else
// think every unice has gettimeofday
struct timeval tv;
gettimeofday( &tv, (struct timezone *)NULL );
secs = tv.tv_sec;
msec = tv.tv_usec/1000;
#endif
if( *sec_base == 0 )
*sec_base = secs;
return( (secs-*sec_base)*1000 + msec );
}
/*----------------------------------------------------------------
Implementation of Test-GLCanvas
-----------------------------------------------------------------*/
BEGIN_EVENT_TABLE(TestGLCanvas, wxGLCanvas)
EVT_SIZE(TestGLCanvas::OnSize)
EVT_PAINT(TestGLCanvas::OnPaint)
EVT_ERASE_BACKGROUND(TestGLCanvas::OnEraseBackground)
EVT_KEY_DOWN( TestGLCanvas::OnKeyDown )
EVT_KEY_UP( TestGLCanvas::OnKeyUp )
EVT_ENTER_WINDOW( TestGLCanvas::OnEnterWindow )
END_EVENT_TABLE()
unsigned long TestGLCanvas::m_secbase = 0;
int TestGLCanvas::m_TimeInitialized = 0;
unsigned long TestGLCanvas::m_xsynct;
unsigned long TestGLCanvas::m_gsynct;
TestGLCanvas::TestGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name):
wxGLCanvas(parent, (wxGLCanvas*) NULL, id, pos, size, style, name )
{
m_init = FALSE;
m_gllist = 0;
m_rleft = WXK_LEFT;
m_rright = WXK_RIGHT;
}
TestGLCanvas::TestGLCanvas(wxWindow *parent, const TestGLCanvas &other,
wxWindowID id, const wxPoint& pos, const wxSize& size, long style,
const wxString& name ) :
wxGLCanvas(parent, other.GetContext(), id, pos, size, style, name )
{
m_init = FALSE;
m_gllist = other.m_gllist; /* share display list */
m_rleft = WXK_LEFT;
m_rright = WXK_RIGHT;
}
TestGLCanvas::~TestGLCanvas()
{
}
void TestGLCanvas::Render()
{
wxPaintDC dc(this);
#ifndef __WXMOTIF__
if (!GetContext()) return;
#endif
SetCurrent();
/* init OpenGL once, but after SetCurrent */
if (!m_init)
{
InitGL();
m_init = TRUE;
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glFrustum(-0.5F, 0.5F, -0.5F, 0.5F, 1.0F, 3.0F);
glMatrixMode(GL_MODELVIEW);
/* clear color and depth buffers */
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if( m_gllist == 0 )
{
m_gllist = glGenLists( 1 );
glNewList( m_gllist, GL_COMPILE_AND_EXECUTE );
/* draw six faces of a cube */
glBegin(GL_QUADS);
glNormal3f( 0.0F, 0.0F, 1.0F);
glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f(-0.5F, 0.5F, 0.5F);
glVertex3f(-0.5F,-0.5F, 0.5F); glVertex3f( 0.5F,-0.5F, 0.5F);
glNormal3f( 0.0F, 0.0F,-1.0F);
glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f(-0.5F, 0.5F,-0.5F);
glVertex3f( 0.5F, 0.5F,-0.5F); glVertex3f( 0.5F,-0.5F,-0.5F);
glNormal3f( 0.0F, 1.0F, 0.0F);
glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f( 0.5F, 0.5F,-0.5F);
glVertex3f(-0.5F, 0.5F,-0.5F); glVertex3f(-0.5F, 0.5F, 0.5F);
glNormal3f( 0.0F,-1.0F, 0.0F);
glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f( 0.5F,-0.5F,-0.5F);
glVertex3f( 0.5F,-0.5F, 0.5F); glVertex3f(-0.5F,-0.5F, 0.5F);
glNormal3f( 1.0F, 0.0F, 0.0F);
glVertex3f( 0.5F, 0.5F, 0.5F); glVertex3f( 0.5F,-0.5F, 0.5F);
glVertex3f( 0.5F,-0.5F,-0.5F); glVertex3f( 0.5F, 0.5F,-0.5F);
glNormal3f(-1.0F, 0.0F, 0.0F);
glVertex3f(-0.5F,-0.5F,-0.5F); glVertex3f(-0.5F,-0.5F, 0.5F);
glVertex3f(-0.5F, 0.5F, 0.5F); glVertex3f(-0.5F, 0.5F,-0.5F);
glEnd();
glEndList();
}
else
glCallList( m_gllist );
glFlush();
SwapBuffers();
}
void TestGLCanvas::OnEnterWindow( wxMouseEvent& event )
{
SetFocus();
}
void TestGLCanvas::OnPaint( wxPaintEvent& event )
{
Render();
}
void TestGLCanvas::OnSize(wxSizeEvent& event)
{
// this is also necessary to update the context on some platforms
wxGLCanvas::OnSize(event);
// set GL viewport (not called by wxGLCanvas::OnSize on all platforms...)
int w, h;
GetClientSize(&w, &h);
#ifndef __WXMOTIF__
if (GetContext())
#endif
{
SetCurrent();
glViewport(0, 0, (GLint) w, (GLint) h);
}
}
void TestGLCanvas::OnEraseBackground(wxEraseEvent& event)
{
// Do nothing, to avoid flashing.
}
void TestGLCanvas::InitGL()
{
SetCurrent();
/* set viewing projection */
glMatrixMode(GL_PROJECTION);
glFrustum(-0.5F, 0.5F, -0.5F, 0.5F, 1.0F, 3.0F);
/* position viewer */
glMatrixMode(GL_MODELVIEW);
glTranslatef(0.0F, 0.0F, -2.0F);
/* position object */
glRotatef(30.0F, 1.0F, 0.0F, 0.0F);
glRotatef(30.0F, 0.0F, 1.0F, 0.0F);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
}
GLfloat TestGLCanvas::CalcRotateSpeed( unsigned long acceltime )
{
GLfloat t,v;
t = ((GLfloat)acceltime) / 1000.0f;
if( t < 0.5f )
v = t;
else if( t < 1.0f )
v = t * (2.0f - t);
else
v = 0.75f;
return(v);
}
GLfloat TestGLCanvas::CalcRotateAngle( unsigned long lasttime,
unsigned long acceltime )
{
GLfloat t,s1,s2;
t = ((GLfloat)(acceltime - lasttime)) / 1000.0f;
s1 = CalcRotateSpeed( lasttime );
s2 = CalcRotateSpeed( acceltime );
return( t * (s1 + s2) * 135.0f );
}
void TestGLCanvas::Action( long code, unsigned long lasttime,
unsigned long acceltime )
{
GLfloat angle = CalcRotateAngle( lasttime, acceltime );
if (code == m_rleft)
Rotate( angle );
else if (code == m_rright)
Rotate( -angle );
}
void TestGLCanvas::OnKeyDown( wxKeyEvent& event )
{
long evkey = event.KeyCode();
if (evkey == 0) return;
if (!m_TimeInitialized)
{
m_TimeInitialized = 1;
m_xsynct = event.m_timeStamp;
m_gsynct = wxStopWatch(&m_secbase);
m_Key = evkey;
m_StartTime = 0;
m_LastTime = 0;
m_LastRedraw = 0;
}
unsigned long currTime = event.m_timeStamp - m_xsynct;
if (evkey != m_Key)
{
m_Key = evkey;
m_LastRedraw = m_StartTime = m_LastTime = currTime;
}
if (currTime >= m_LastRedraw) // Redraw:
{
Action( m_Key, m_LastTime-m_StartTime, currTime-m_StartTime );
#if defined(__WXMAC__) && !defined(__DARWIN__)
m_LastRedraw = currTime; // wxStopWatch() doesn't work on Mac...
#else
m_LastRedraw = wxStopWatch(&m_secbase) - m_gsynct;
#endif
m_LastTime = currTime;
}
event.Skip();
}
void TestGLCanvas::OnKeyUp( wxKeyEvent& event )
{
m_Key = 0;
m_StartTime = 0;
m_LastTime = 0;
m_LastRedraw = 0;
event.Skip();
}
void TestGLCanvas::Rotate( GLfloat deg )
{
SetCurrent();
glMatrixMode(GL_MODELVIEW);
glRotatef((GLfloat)deg, 0.0F, 0.0F, 1.0F);
Refresh(FALSE);
}
/* -----------------------------------------------------------------------
Main Window
-------------------------------------------------------------------------*/
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(wxID_EXIT, MyFrame::OnExit)
EVT_MENU( ID_NEW_WINDOW, MyFrame::OnNewWindow)
EVT_MENU( ID_DEF_ROTATE_LEFT_KEY, MyFrame::OnDefRotateLeftKey)
EVT_MENU( ID_DEF_ROTATE_RIGHT_KEY, MyFrame::OnDefRotateRightKey)
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();
}
void MyFrame::OnNewWindow(wxCommandEvent& event)
{
MyFrame *frame = new MyFrame(NULL, "Cube OpenGL Demo Clone",
wxPoint(50, 50), wxSize(400, 300));
// Give it an icon
#ifdef __WXMSW__
frame->SetIcon(wxIcon("mondrian"));
#endif
// Make a menubar
wxMenu *winMenu = new wxMenu;
winMenu->Append(wxID_EXIT, "&Close");
winMenu->Append(ID_NEW_WINDOW, "&New" );
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(winMenu, "&Window");
winMenu = new wxMenu;
winMenu->Append(ID_DEF_ROTATE_LEFT_KEY, "Rotate &left");
winMenu->Append(ID_DEF_ROTATE_RIGHT_KEY, "Rotate &right");
menuBar->Append(winMenu, "&Key");
frame->SetMenuBar(menuBar);
frame->m_canvas = new TestGLCanvas( frame, *m_canvas, -1,
wxDefaultPosition, wxDefaultSize );
// Show the frame
frame->Show(TRUE);
}
void MyFrame::OnDefRotateLeftKey(wxCommandEvent& event)
{
ScanCodeDialog dial( this, -1, m_canvas->m_rleft,
wxString("Left"), "Define key" );
int result = dial.ShowModal();
if( result == wxID_OK )
m_canvas->m_rleft = dial.GetValue();
}
void MyFrame::OnDefRotateRightKey(wxCommandEvent& event)
{
ScanCodeDialog dial( this, -1, m_canvas->m_rright,
wxString("Right"), "Define key" );
int result = dial.ShowModal();
if( result == wxID_OK )
m_canvas->m_rright = dial.GetValue();
}
/*------------------------------------------------------------------
Application object ( equivalent to main() )
------------------------------------------------------------------ */
IMPLEMENT_APP(MyApp)
bool MyApp::OnInit(void)
{
wxLog::SetTraceMask(wxTraceMessages);
// Create the main frame window
MyFrame *frame = new MyFrame(NULL, "Cube OpenGL Demo", wxPoint(50, 50),
wxSize(400, 300));
// Give it an icon
#ifdef wx_msw
frame->SetIcon(wxIcon("mondrian"));
#endif
// Make a menubar
wxMenu *winMenu = new wxMenu;
winMenu->Append(wxID_EXIT, "&Close");
winMenu->Append(ID_NEW_WINDOW, "&New" );
wxMenuBar *menuBar = new wxMenuBar;
menuBar->Append(winMenu, "&Window");
winMenu = new wxMenu;
winMenu->Append(ID_DEF_ROTATE_LEFT_KEY, "Rotate &left");
winMenu->Append(ID_DEF_ROTATE_RIGHT_KEY, "Rotate &right");
menuBar->Append(winMenu, "&Key");
frame->SetMenuBar(menuBar);
frame->m_canvas = new TestGLCanvas(frame, -1, wxDefaultPosition, wxDefaultSize);
// Show the frame
frame->Show(TRUE);
return TRUE;
}
