// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation
-#pragma interface
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#endif
#if !wxUSE_GLCANVAS
-#error Please set wxUSE_GLCANVAS to 1 in setup.h.
+ #error "OpenGL required: set wxUSE_GLCANVAS to 1 and rebuild the library"
#endif
#include "wx/timer.h"
#include "wx/glcanvas.h"
+#include "wx/math.h"
+
+#if defined(__WXMAC__) || defined(__WXCOCOA__)
+# ifdef __DARWIN__
+# include <OpenGL/gl.h>
+# include <OpenGL/glu.h>
+# else
+# include <gl.h>
+# include <glu.h>
+# endif
+#else
+# include <GL/gl.h>
+# include <GL/glu.h>
+#endif
-#include <GL/gl.h>
-#include <GL/glu.h>
+// disabled because this has apparently changed in OpenGL 1.2, so doesn't link
+// correctly if this is on...
+#ifdef GL_EXT_vertex_array
+#undef GL_EXT_vertex_array
+#endif
+
+#include <fstream>
#include "isosurf.h"
+#include "../../sample.xpm"
// The following part is taken largely unchanged from the original C Version
-#include <math.h>
-
GLboolean speed_test = GL_FALSE;
GLboolean use_vertex_arrays = GL_FALSE;
static GLfloat yrot;
-static void read_surface( char *filename )
+static void read_surface(const char *filename)
{
- FILE *f;
-
- f = fopen(filename,"r");
- if (!f) {
- wxString msg("Couldn't read ");
- msg += filename;
- wxMessageBox(msg);
- return;
- }
-
- numverts = 0;
- while (!feof(f) && numverts<MAXVERTS) {
- fscanf( f, "%f %f %f %f %f %f",
- &verts[numverts][0], &verts[numverts][1], &verts[numverts][2],
- &norms[numverts][0], &norms[numverts][1], &norms[numverts][2] );
- numverts++;
- }
- numverts--;
-
- printf("%d vertices, %d triangles\n", numverts, numverts-2);
- fclose(f);
+ std::ifstream inFile(filename);
+ numverts = 0;
+
+ if ( !inFile )
+ {
+ wxLogError("Couldn't read \"%s\"", filename);
+ return;
+ }
+
+ while ((inFile >> verts[numverts][0] >> verts[numverts][1] >> verts[numverts][2]
+ >> norms[numverts][0] >> norms[numverts][1] >> norms[numverts][2]) && numverts<MAXVERTS)
+ {
+ numverts++;
+ }
+
+ wxPrintf(_T("%d vertices, %d triangles\n"), numverts, numverts-2);
}
-static void draw_surface( void )
+static void draw_surface()
{
- GLint i;
+ GLint i;
#ifdef GL_EXT_vertex_array
- if (use_vertex_arrays) {
- glDrawArraysEXT( GL_TRIANGLE_STRIP, 0, numverts );
- }
- else {
-#endif
- glBegin( GL_TRIANGLE_STRIP );
- for (i=0;i<numverts;i++) {
- glNormal3fv( norms[i] );
- glVertex3fv( verts[i] );
- }
- glEnd();
-#ifdef GL_EXT_vertex_array
- }
+ if (use_vertex_arrays)
+ {
+ glDrawArraysEXT( GL_TRIANGLE_STRIP, 0, numverts );
+ }
+ else
#endif
+ {
+ glBegin( GL_TRIANGLE_STRIP );
+ for (i=0;i<numverts;i++)
+ {
+ glNormal3fv( norms[i] );
+ glVertex3fv( verts[i] );
+ }
+ glEnd();
+ }
}
-static void draw1(void)
+static void draw1()
{
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glPushMatrix();
- glRotatef( yrot, 0.0, 1.0, 0.0 );
- glRotatef( xrot, 1.0, 0.0, 0.0 );
+ glRotatef( yrot, 0.0f, 1.0f, 0.0f );
+ glRotatef( xrot, 1.0f, 0.0f, 0.0f );
draw_surface();
glPopMatrix();
- glFlush();
+ glFlush(); // Not really necessary: buffer swapping below implies glFlush()
}
-static void InitMaterials(void)
+static void InitMaterials()
{
- static float ambient[] = {0.1, 0.1, 0.1, 1.0};
- static float diffuse[] = {0.5, 1.0, 1.0, 1.0};
- static float position0[] = {0.0, 0.0, 20.0, 0.0};
- static float position1[] = {0.0, 0.0, -20.0, 0.0};
- static float front_mat_shininess[] = {60.0};
- static float front_mat_specular[] = {0.2, 0.2, 0.2, 1.0};
- static float front_mat_diffuse[] = {0.5, 0.28, 0.38, 1.0};
+ static const GLfloat ambient[4] = {0.1f, 0.1f, 0.1f, 1.0f};
+ static const GLfloat diffuse[4] = {0.5f, 1.0f, 1.0f, 1.0f};
+ static const GLfloat position0[4] = {0.0f, 0.0f, 20.0f, 0.0f};
+ static const GLfloat position1[4] = {0.0f, 0.0f, -20.0f, 0.0f};
+ static const GLfloat front_mat_shininess[1] = {60.0f};
+ static const GLfloat front_mat_specular[4] = {0.2f, 0.2f, 0.2f, 1.0f};
+ static const GLfloat front_mat_diffuse[4] = {0.5f, 0.28f, 0.38f, 1.0f};
/*
- static float back_mat_shininess[] = {60.0};
- static float back_mat_specular[] = {0.5, 0.5, 0.2, 1.0};
- static float back_mat_diffuse[] = {1.0, 1.0, 0.2, 1.0};
+ static const GLfloat back_mat_shininess[1] = {60.0f};
+ static const GLfloat back_mat_specular[4] = {0.5f, 0.5f, 0.2f, 1.0f};
+ static const GLfloat back_mat_diffuse[4] = {1.0f, 1.0f, 0.2f, 1.0f};
*/
- static float lmodel_ambient[] = {1.0, 1.0, 1.0, 1.0};
- static float lmodel_twoside[] = {GL_FALSE};
+ static const GLfloat lmodel_ambient[4] = {1.0f, 1.0f, 1.0f, 1.0f};
+ static const GLfloat lmodel_twoside[1] = {GL_FALSE};
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
glLightfv(GL_LIGHT0, GL_POSITION, position0);
glEnable(GL_LIGHT0);
-
+
glLightfv(GL_LIGHT1, GL_AMBIENT, ambient);
glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse);
glLightfv(GL_LIGHT1, GL_POSITION, position1);
glEnable(GL_LIGHT1);
-
+
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
glEnable(GL_LIGHTING);
static void Init(void)
{
- glClearColor(0.0, 0.0, 0.0, 0.0);
+ glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
- glShadeModel(GL_SMOOTH);
- glEnable(GL_DEPTH_TEST);
+ glShadeModel(GL_SMOOTH);
+ glEnable(GL_DEPTH_TEST);
- InitMaterials();
+ InitMaterials();
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum( -1.0, 1.0, -1.0, 1.0, 5, 25 );
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 25.0 );
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- glTranslatef( 0.0, 0.0, -6.0 );
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef( 0.0, 0.0, -6.0 );
#ifdef GL_EXT_vertex_array
- if (use_vertex_arrays) {
- glVertexPointerEXT( 3, GL_FLOAT, 0, numverts, verts );
- glNormalPointerEXT( GL_FLOAT, 0, numverts, norms );
- glEnable( GL_VERTEX_ARRAY_EXT );
- glEnable( GL_NORMAL_ARRAY_EXT );
- }
+ if (use_vertex_arrays)
+ {
+ glVertexPointerEXT( 3, GL_FLOAT, 0, numverts, verts );
+ glNormalPointerEXT( GL_FLOAT, 0, numverts, norms );
+ glEnable( GL_VERTEX_ARRAY_EXT );
+ glEnable( GL_NORMAL_ARRAY_EXT );
+ }
#endif
}
-
-static void Reshape(int width, int height)
+static GLenum Args(int argc, wxChar **argv)
{
- glViewport(0, 0, (GLint)width, (GLint)height);
-}
-
+ GLint i;
+
+ for (i = 1; i < argc; i++)
+ {
+ if (wxStrcmp(argv[i], _T("-sb")) == 0)
+ {
+ doubleBuffer = GL_FALSE;
+ }
+ else if (wxStrcmp(argv[i], _T("-db")) == 0)
+ {
+ doubleBuffer = GL_TRUE;
+ }
+ else if (wxStrcmp(argv[i], _T("-speed")) == 0)
+ {
+ speed_test = GL_TRUE;
+ doubleBuffer = GL_TRUE;
+ }
+ else if (wxStrcmp(argv[i], _T("-va")) == 0)
+ {
+ use_vertex_arrays = GL_TRUE;
+ }
+ else
+ {
+ wxString msg = _T("Bad option: ");
+ msg += argv[i];
+ wxMessageBox(msg);
+ return GL_FALSE;
+ }
+ }
-static GLenum Args(int argc, char **argv)
-{
- GLint i;
-
- for (i = 1; i < argc; i++) {
- if (strcmp(argv[i], "-sb") == 0) {
- doubleBuffer = GL_FALSE;
- }
- else if (strcmp(argv[i], "-db") == 0) {
- doubleBuffer = GL_TRUE;
- }
- else if (strcmp(argv[i], "-speed") == 0) {
- speed_test = GL_TRUE;
- doubleBuffer = GL_TRUE;
- }
- else if (strcmp(argv[i], "-va") == 0) {
- use_vertex_arrays = GL_TRUE;
- }
- else {
- wxString msg("Bad option: ");
- msg += argv[i];
- wxMessageBox(msg);
- return GL_FALSE;
- }
- }
-
- return GL_TRUE;
+ return GL_TRUE;
}
-// The following part was written for wxWindows 1.66
-MyFrame *frame = NULL;
IMPLEMENT_APP(MyApp)
// `Main program' equivalent, creating windows and returning main app frame
-bool MyApp::OnInit(void)
+bool MyApp::OnInit()
+{
+ if ( !wxApp::OnInit() )
+ return false;
+
+ Args(argc, argv);
+
+ // Create the main frame window
+ new MyFrame(NULL, wxT("wxWidgets OpenGL Isosurf Sample"),
+ wxDefaultPosition, wxDefaultSize);
+
+ read_surface("isosurf.dat");
+
+ Init();
+
+ return true;
+}
+
+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, wxID_ANY, title, pos, size, style),
+ m_canvas(NULL)
{
- Args(argc, argv);
+ SetIcon(wxICON(sample));
- // Create the main frame window
- frame = new MyFrame(NULL, "Isosurf GL Sample", wxPoint(50, 50), wxSize(200, 200));
- // Give it an icon
- frame->SetIcon(wxIcon("mondrian"));
+ // Make a menubar
+ wxMenu *fileMenu = new wxMenu;
- // Make a menubar
- wxMenu *fileMenu = new wxMenu;
+ fileMenu->Append(wxID_EXIT, _T("E&xit"));
+ wxMenuBar *menuBar = new wxMenuBar;
+ menuBar->Append(fileMenu, _T("&File"));
+ SetMenuBar(menuBar);
- fileMenu->Append(wxID_EXIT, "E&xit");
- wxMenuBar *menuBar = new wxMenuBar;
- menuBar->Append(fileMenu, "&File");
- frame->SetMenuBar(menuBar);
// Make a TestGLCanvas
// JACS
#ifdef __WXMSW__
- int *gl_attrib = NULL;
+ int *gl_attrib = NULL;
#else
- int gl_attrib[20] = { GLX_RGBA, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1,
- GLX_BLUE_SIZE, 1, GLX_DEPTH_SIZE, 1,
- GLX_DOUBLEBUFFER, None };
+ int gl_attrib[20] = { WX_GL_RGBA, WX_GL_MIN_RED, 1, WX_GL_MIN_GREEN, 1,
+ WX_GL_MIN_BLUE, 1, WX_GL_DEPTH_SIZE, 1,
+ WX_GL_DOUBLEBUFFER,
+# if defined(__WXMAC__) || defined(__WXCOCOA__)
+ GL_NONE };
+# else
+ None };
+# endif
#endif
- if(!doubleBuffer)
- {
- printf("don't have double buffer, disabling\n");
+ if(!doubleBuffer)
+ {
+ printf("don't have double buffer, disabling\n");
#ifdef __WXGTK__
- gl_attrib[9] = None;
+ gl_attrib[9] = None;
#endif
- doubleBuffer = GL_FALSE;
- }
- frame->m_canvas = new TestGLCanvas(frame, -1, wxPoint(0, 0), wxSize(200, 200), 0, "TestGLCanvas",
- gl_attrib);
-
- // Show the frame
- frame->Show(TRUE);
-
- frame->m_canvas->SetCurrent();
- read_surface( "isosurf.dat" );
+ doubleBuffer = GL_FALSE;
+ }
- Init();
+ // Show the frame
+ Show(true);
- return TRUE;
+ m_canvas = new TestGLCanvas(this, wxID_ANY, wxDefaultPosition,
+ GetClientSize(), 0, _T("TestGLCanvas"), gl_attrib );
}
-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)
+MyFrame::~MyFrame()
{
- m_canvas = NULL;
+ delete m_canvas;
}
// Intercept menu commands
-void MyFrame::OnExit(wxCommandEvent& event)
+void MyFrame::OnExit( wxCommandEvent& WXUNUSED(event) )
{
- Destroy();
+ // true is to force the frame to close
+ Close(true);
}
/*
EVT_PAINT(TestGLCanvas::OnPaint)
EVT_CHAR(TestGLCanvas::OnChar)
EVT_MOUSE_EVENTS(TestGLCanvas::OnMouseEvent)
- EVT_ERASE_BACKGROUND(TestGLCanvas::OnEraseBackground)
END_EVENT_TABLE()
-TestGLCanvas::TestGLCanvas(wxWindow *parent, wxWindowID id,
- const wxPoint& pos, const wxSize& size, long style, const wxString& name, int* gl_attrib):
- wxGLCanvas(parent, id, pos, size, style, name, gl_attrib)
+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)
{
- parent->Show(TRUE);
- SetCurrent();
- /* Make sure server supports the vertex array extension */
- char* extensions = (char *) glGetString( GL_EXTENSIONS );
- if (!extensions || !strstr( extensions, "GL_EXT_vertex_array" )) {
- use_vertex_arrays = GL_FALSE;
- }
-}
+ // 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);
-TestGLCanvas::~TestGLCanvas(void)
+ /* Make sure server supports the vertex array extension */
+ char* extensions = (char *) glGetString( GL_EXTENSIONS );
+ if (!extensions || !strstr( extensions, "GL_EXT_vertex_array" ))
+ {
+ use_vertex_arrays = GL_FALSE;
+ }
+}
+
+TestGLCanvas::~TestGLCanvas()
{
+ delete m_glRC;
}
-void TestGLCanvas::OnPaint( wxPaintEvent& event )
+void TestGLCanvas::OnPaint( wxPaintEvent& WXUNUSED(event) )
{
// This is a dummy, to avoid an endless succession of paint messages.
// OnPaint handlers must always create a wxPaintDC.
wxPaintDC dc(this);
-#ifndef __WXMOTIF__
- if (!GetContext()) return;
-#endif
+ // This is normally only necessary if there is more than one wxGLCanvas
+ // or more than one wxGLContext in the application.
+ SetCurrent(*m_glRC);
draw1();
SwapBuffers();
void TestGLCanvas::OnSize(wxSizeEvent& event)
{
-#ifndef __WXMOTIF__
- if (!GetContext()) return;
-#endif
-
- SetCurrent();
- int width, height;
- GetClientSize(& width, & height);
- Reshape(width, height);
+ // This is normally only necessary if there is more than one wxGLCanvas
+ // or more than one wxGLContext in the application.
+ SetCurrent(*m_glRC);
+
+ // It's up to the application code to update the OpenGL viewport settings.
+ // This is OK here only because there is only one canvas that uses the
+ // context. See the cube sample for that case that multiple canvases are
+ // made current with one context.
+ glViewport(0, 0, event.GetSize().x, event.GetSize().y);
}
void TestGLCanvas::OnChar(wxKeyEvent& event)
{
- switch(event.KeyCode()) {
+ switch( event.GetKeyCode() )
+ {
case WXK_ESCAPE:
- exit(0);
+ wxTheApp->ExitMainLoop();
+ return;
+
case WXK_LEFT:
- yrot -= 15.0;
- break;
+ yrot -= 15.0;
+ break;
+
case WXK_RIGHT:
- yrot += 15.0;
- break;
+ yrot += 15.0;
+ break;
+
case WXK_UP:
- xrot += 15.0;
- break;
+ xrot += 15.0;
+ break;
+
case WXK_DOWN:
- xrot -= 15.0;
- break;
+ xrot -= 15.0;
+ break;
+
case 's': case 'S':
- smooth = !smooth;
- if (smooth) {
- glShadeModel(GL_SMOOTH);
- } else {
- glShadeModel(GL_FLAT);
- }
- break;
+ smooth = !smooth;
+ if (smooth)
+ {
+ glShadeModel(GL_SMOOTH);
+ }
+ else
+ {
+ glShadeModel(GL_FLAT);
+ }
+ break;
+
case 'l': case 'L':
- lighting = !lighting;
- if (lighting) {
- glEnable(GL_LIGHTING);
- } else {
- glDisable(GL_LIGHTING);
- }
- break;
- default:
- {
+ lighting = !lighting;
+ if (lighting)
+ {
+ glEnable(GL_LIGHTING);
+ }
+ else
+ {
+ glDisable(GL_LIGHTING);
+ }
+ break;
+
+ default:
event.Skip();
- return;
- }
+ return;
}
- Refresh(FALSE);
+ Refresh(false);
}
void TestGLCanvas::OnMouseEvent(wxMouseEvent& event)
static int dragging = 0;
static float last_x, last_y;
- //printf("%f %f %d\n", event.GetX(), event.GetY(), (int)event.LeftIsDown());
- if(event.LeftIsDown()) {
- if(!dragging) {
- dragging = 1;
- } else {
- yrot += (event.GetX() - last_x)*1.0;
- xrot += (event.GetY() - last_y)*1.0;
- Refresh(FALSE);
- }
- last_x = event.GetX();
- last_y = event.GetY();
- } else
- dragging = 0;
-}
-
-void TestGLCanvas::OnEraseBackground(wxEraseEvent& event)
-{
- // Do nothing, to avoid flashing.
+ // Allow default processing to happen, or else the canvas cannot gain focus
+ // (for key events).
+ event.Skip();
+
+ if(event.LeftIsDown())
+ {
+ if(!dragging)
+ {
+ dragging = 1;
+ }
+ else
+ {
+ yrot += (event.GetX() - last_x)*1.0;
+ xrot += (event.GetY() - last_y)*1.0;
+ Refresh(false);
+ }
+ last_x = event.GetX();
+ last_y = event.GetY();
+ }
+ else
+ {
+ dragging = 0;
+ }
}
projects / wxWidgets.git / blobdiff