// Name: isosurf.cpp
// Purpose: wxGLCanvas demo program
// Author: Brian Paul (original gltk version), Wolfram Gloger
-// Modified by: Julian Smart
+// Modified by: Julian Smart, Francesco Montorsi
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
#include "wx/math.h"
#include "wx/log.h"
#include "wx/cmdline.h"
-#include "wx/archive.h"
#include "wx/wfstream.h"
#include "wx/zstream.h"
+#include "wx/txtstrm.h"
#include "isosurf.h"
#include "../../sample.xpm"
// global options which can be set through command-line options
-GLboolean g_speed_test = GL_FALSE;
GLboolean g_use_vertex_arrays = GL_FALSE;
GLboolean g_doubleBuffer = GL_TRUE;
GLboolean g_smooth = GL_TRUE;
IMPLEMENT_APP(MyApp)
-// `Main program' equivalent, creating windows and returning main app frame
bool MyApp::OnInit()
{
if ( !wxApp::OnInit() )
return false;
// Create the main frame window
- SetTopWindow(new MyFrame(NULL, wxT("wxWidgets OpenGL Isosurf Sample"),
- wxDefaultPosition, wxDefaultSize));
+ new MyFrame(NULL, wxT("wxWidgets OpenGL Isosurf Sample"));
return true;
}
void MyApp::OnInitCmdLine(wxCmdLineParser& parser)
{
- parser.AddSwitch("", "-sb");
- parser.AddSwitch("", "-db");
- parser.AddSwitch("", "-speed");
- parser.AddSwitch("", "-va");
+ parser.AddSwitch("", "sb", "Do not use double buffering");
+ parser.AddSwitch("", "db", "Use double buffering");
+ parser.AddSwitch("", "va", "Use vertex arrays");
wxApp::OnInitCmdLine(parser);
}
bool MyApp::OnCmdLineParsed(wxCmdLineParser& parser)
{
- if (parser.Found("-sb"))
+ if (parser.Found("sb"))
g_doubleBuffer = GL_FALSE;
- else if (parser.Found("-db"))
+ else if (parser.Found("db"))
g_doubleBuffer = GL_TRUE;
- if (parser.Found("-speed"))
- {
- g_speed_test = GL_TRUE;
- g_doubleBuffer = GL_TRUE;
- }
-
- if (parser.Found("-va"))
+ if (parser.Found("va"))
g_use_vertex_arrays = GL_TRUE;
return wxApp::OnCmdLineParsed(parser);
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)
+ const wxSize& size, long style)
: wxFrame(frame, wxID_ANY, title, pos, size, style),
m_canvas(NULL)
{
// Make a menubar
wxMenu *fileMenu = new wxMenu;
- fileMenu->Append(wxID_EXIT, _T("E&xit"));
+ fileMenu->Append(wxID_EXIT, wxT("E&xit"));
wxMenuBar *menuBar = new wxMenuBar;
- menuBar->Append(fileMenu, _T("&File"));
+ menuBar->Append(fileMenu, wxT("&File"));
SetMenuBar(menuBar);
if (!g_doubleBuffer)
{
- wxLogWarning("don't have double buffer, disabling\n");
+ wxLogWarning("Disabling double buffering");
#ifdef __WXGTK__
gl_attrib[9] = None;
g_doubleBuffer = GL_FALSE;
}
+ m_canvas = new TestGLCanvas(this, wxID_ANY, gl_attrib);
+
// Show the frame
Show(true);
+ Raise();
- m_canvas = new TestGLCanvas(this, wxID_ANY, wxDefaultPosition,
- GetClientSize(), 0, _T("TestGLCanvas"), gl_attrib);
+ m_canvas->InitGL();
}
MyFrame::~MyFrame()
TestGLCanvas::TestGLCanvas(wxWindow *parent,
wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
int* gl_attrib)
- : wxGLCanvas(parent, id, gl_attrib, pos, size,
- style | wxFULL_REPAINT_ON_RESIZE, name)
+ : wxGLCanvas(parent, id, gl_attrib)
{
+ m_xrot = 0;
+ m_yrot = 0;
+ m_numverts = 0;
+
// Explicitly create a new rendering context instance for this canvas.
m_glRC = new wxGLContext(this);
-
- // Make the new context current (activate it for use) with this canvas.
- SetCurrent(*m_glRC);
-
- InitGL();
- InitMaterials();
- LoadSurface("isosurf.dat.gz");
}
TestGLCanvas::~TestGLCanvas()
void TestGLCanvas::LoadSurface(const wxString& filename)
{
+ // FIXME
+ // we need to set english locale to force wxTextInputStream's calls to
+ // wxStrtod to use the point and not the comma as decimal separator...
+ // (the isosurf.dat contains points and not commas)...
+ wxLocale l(wxLANGUAGE_ENGLISH);
+
wxZlibInputStream* stream =
new wxZlibInputStream(new wxFFileInputStream(filename));
if (!stream || !stream->IsOk())
return;
}
- m_numverts = 0;
-
- const size_t sz = sizeof(GLfloat);
- while (!stream->Eof() && m_numverts < MAXVERTS)
{
- // read a vertex
- for (int i=0; i<3; i++)
- if (stream->Read(&m_verts[m_numverts][i], sz).LastRead() != sz)
- {
- wxLogError("Cannot read the %d-th vertex in '%s'!",
- m_numverts, filename.c_str());
- delete stream;
- return;
- }
-
- // read its normal
- for (int i=0; i<3; i++)
- if (stream->Read(&m_norms[m_numverts][i], sz).LastRead() != sz)
- {
- wxLogError("Cannot read the %d-th vertex in '%s'!",
- m_numverts, filename.c_str());
- delete stream;
- return;
- }
-
- m_numverts++;
+ // we suppose to have in input a text file containing floating numbers
+ // space/newline-separated... first 3 numbers are the coordinates of a
+ // vertex and the following 3 are the relative vertex normal and so on...
+
+ wxTextInputStream inFile(*stream);
+ m_numverts = 0;
+
+ while (!stream->Eof() && m_numverts < MAXVERTS)// && m_numverts<MAXVERTS)
+ {
+ inFile >> m_verts[m_numverts][0] >> m_verts[m_numverts][1] >> m_verts[m_numverts][2];
+ inFile >> m_norms[m_numverts][0] >> m_norms[m_numverts][1] >> m_norms[m_numverts][2];
+
+ m_numverts++;
+ }
+
+ // discard last vertex; it is a zero caused by the EOF
+ m_numverts--;
}
delete stream;
- wxLogMessage(_T("Loaded %d vertices, %d triangles from '%s'"),
+ wxLogMessage(wxT("Loaded %d vertices, %d triangles from '%s'"),
m_numverts, m_numverts-2, filename.c_str());
+
+ // NOTE: for some reason under wxGTK the following is required to avoid that
+ // the surface gets rendered in a small rectangle in the top-left corner of the frame
+ PostSizeEventToParent();
}
void TestGLCanvas::OnPaint( wxPaintEvent& WXUNUSED(event) )
glRotatef( m_xrot, 1.0f, 0.0f, 0.0f );
// draw the surface
-/* if (g_use_vertex_arrays)
+ if (g_use_vertex_arrays)
{
glDrawArrays( GL_TRIANGLE_STRIP, 0, m_numverts );
}
- else*/
+ else
{
glBegin( GL_TRIANGLE_STRIP );
void TestGLCanvas::OnSize(wxSizeEvent& event)
{
+ if ( !IsShownOnScreen() )
+ return;
// This is normally only necessary if there is more than one wxGLCanvas
// or more than one wxGLContext in the application.
SetCurrent(*m_glRC);
case 's': case 'S':
g_smooth = !g_smooth;
if (g_smooth)
- {
glShadeModel(GL_SMOOTH);
- }
else
- {
glShadeModel(GL_FLAT);
- }
break;
case 'l': case 'L':
g_lighting = !g_lighting;
if (g_lighting)
- {
glEnable(GL_LIGHTING);
- }
else
- {
glDisable(GL_LIGHTING);
- }
break;
default:
// (for key events).
event.Skip();
- if(event.LeftIsDown())
+ if (event.LeftIsDown())
{
- if(!dragging)
+ if (!dragging)
{
dragging = 1;
}
void TestGLCanvas::InitGL()
{
+ // Make the new context current (activate it for use) with this canvas.
+ SetCurrent(*m_glRC);
+
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glShadeModel(GL_SMOOTH);
{
glVertexPointer( 3, GL_FLOAT, 0, m_verts );
glNormalPointer( GL_FLOAT, 0, m_norms );
- glEnable( GL_VERTEX_ARRAY_EXT );
- glEnable( GL_NORMAL_ARRAY_EXT );
+ glEnable( GL_VERTEX_ARRAY );
+ glEnable( GL_NORMAL_ARRAY );
}
+
+ InitMaterials();
+ LoadSurface("isosurf.dat.gz");
}
projects / wxWidgets.git / blobdiff