--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// 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);
+}
+
+
projects / wxWidgets.git / blobdiff