[wxWidgets.git] / utils / glcanvas / samples / isosurf / isosurf.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        isosurf.cpp
// Purpose:     wxGLCanvas demo program
// Author:      Brian Paul (original gltk version), Wolfram Gloger
// Modified by: Julian Smart
// Created:     04/01/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// 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 "wx/timer.h"
#include "glcanvas.h"

#include <GL/gl.h>
#include <GL/glu.h>

#include "isosurf.h"

// 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;

GLboolean doubleBuffer = GL_TRUE;

GLboolean smooth = GL_TRUE;
GLboolean lighting = GL_TRUE;


#define MAXVERTS 10000

static GLfloat verts[MAXVERTS][3];
static GLfloat norms[MAXVERTS][3];
static GLint numverts;

static GLfloat xrot;
static GLfloat yrot;


static void read_surface( 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);
}


static void draw_surface( void )
{
   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
   }
#endif
}


static void draw1(void)
{
    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 );

    draw_surface();

    glPopMatrix();

    glFlush();
}


static void InitMaterials(void)
{
    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 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 float lmodel_ambient[] = {1.0, 1.0, 1.0, 1.0};
    static float lmodel_twoside[] = {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);

    glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_mat_shininess);
    glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_mat_specular);
    glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, front_mat_diffuse);
}


static void Init(void)
{
   glClearColor(0.0, 0.0, 0.0, 0.0);

   glShadeModel(GL_SMOOTH);
   glEnable(GL_DEPTH_TEST);

   InitMaterials();

   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
   glFrustum( -1.0, 1.0, -1.0, 1.0, 5, 25 );

   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 );
   }
#endif
}


static void Reshape(int width, int height)
{
  glViewport(0, 0, (GLint)width, (GLint)height);
}


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;
}

// 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)
{
  Args(argc, argv);

  // 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;

  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;
#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 };
#endif

  if(!doubleBuffer
#ifdef __WXGTK__ // JACS
   || !wxGLCanvas::HaveVisual(gl_attrib)
#endif
   )
   {
      printf("don't have double buffer, disabling\n");
#ifdef __WXGTK__
      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" );

  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, -1, title, pos, size, style)
{
    m_canvas = NULL;
}

// Intercept menu commands
void MyFrame::OnExit(wxCommandEvent& event)
{
    Destroy();
}

bool MyFrame::OnClose(void)
{
    return TRUE;
}


/*
 * TestGLCanvas implementation
 */

BEGIN_EVENT_TABLE(TestGLCanvas, wxGLCanvas)
    EVT_SIZE(TestGLCanvas::OnSize)
    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)
{
   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;
   }
}


TestGLCanvas::~TestGLCanvas(void)
{
}

void TestGLCanvas::OnPaint( wxPaintEvent& event )
{
    // This is a dummy, to avoid an endless succession of paint messages.
    // OnPaint handlers must always create a wxPaintDC.
    wxPaintDC dc(this);

    draw1();
    SwapBuffers();
}

void TestGLCanvas::OnSize(wxSizeEvent& event)
{
    SetCurrent();
    int width, height;
    GetClientSize(& width, & height);
    Reshape(width, height);
}

void TestGLCanvas::OnChar(wxKeyEvent& event)
{
    switch(event.KeyCode()) {
    case WXK_ESCAPE:
	exit(0);
    case WXK_LEFT:
	yrot -= 15.0;
	break;
    case WXK_RIGHT:
	yrot += 15.0;
	break;
    case WXK_UP:
	xrot += 15.0;
	break;
    case WXK_DOWN:
	xrot -= 15.0;
	break;
    case 's': case 'S':
	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;
    }

    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.
}
Commit	Line	Data
c2265822 JS	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: isosurf.cpp
	3	// Purpose: wxGLCanvas demo program
	4	// Author: Brian Paul (original gltk version), Wolfram Gloger
	5	// Modified by: Julian Smart
	6	// Created: 04/01/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation
	14	#pragma interface
	15	#endif
	16
	17	// For compilers that support precompilation, includes "wx.h".
	18	#include "wx/wxprec.h"
	19
	20	#ifdef __BORLANDC__
	21	#pragma hdrstop
	22	#endif
	23
	24	#ifndef WX_PRECOMP
	25	#include "wx/wx.h"
	26	#endif
	27
	28	#include "wx/timer.h"
	29	#include "glcanvas.h"
	30
	31	#include <GL/gl.h>
	32	#include <GL/glu.h>
	33
	34	#include "isosurf.h"
	35
	36	// The following part is taken largely unchanged from the original C Version
	37
	38	#include <math.h>
	39
	40	GLboolean speed_test = GL_FALSE;
	41	GLboolean use_vertex_arrays = GL_FALSE;
	42
	43	GLboolean doubleBuffer = GL_TRUE;
	44
	45	GLboolean smooth = GL_TRUE;
	46	GLboolean lighting = GL_TRUE;
	47
	48
	49	#define MAXVERTS 10000
	50
	51	static GLfloat verts[MAXVERTS][3];
	52	static GLfloat norms[MAXVERTS][3];
	53	static GLint numverts;
	54
	55	static GLfloat xrot;
	56	static GLfloat yrot;
	57
	58
	59	static void read_surface( char *filename )
	60	{
	61	FILE *f;
	62
	63	f = fopen(filename,"r");
	64	if (!f) {
65	wxString msg("Couldn't read ");
66	msg += filename;
67	wxMessageBox(msg);
68	return;
69	}
70
71	numverts = 0;
72	while (!feof(f) && numverts<MAXVERTS) {
73	fscanf( f, "%f %f %f %f %f %f",
74	&verts[numverts][0], &verts[numverts][1], &verts[numverts][2],
75	&norms[numverts][0], &norms[numverts][1], &norms[numverts][2] );
76	numverts++;
77	}
78	numverts--;
79
80	printf("%d vertices, %d triangles\n", numverts, numverts-2);
81	fclose(f);
82	}
83
84
85	static void draw_surface( void )
86	{
87	GLint i;
88
89	#ifdef GL_EXT_vertex_array
90	if (use_vertex_arrays) {
91	glDrawArraysEXT( GL_TRIANGLE_STRIP, 0, numverts );
92	}
93	else {
94	#endif
95	glBegin( GL_TRIANGLE_STRIP );
96	for (i=0;i<numverts;i++) {
97	glNormal3fv( norms[i] );
98	glVertex3fv( verts[i] );
99	}
100	glEnd();
101	#ifdef GL_EXT_vertex_array
102	}
103	#endif
104	}
105
106
107	static void draw1(void)
108	{
109	glClear( GL_COLOR_BUFFER_BIT \| GL_DEPTH_BUFFER_BIT );
110	glPushMatrix();
111	glRotatef( yrot, 0.0, 1.0, 0.0 );
112	glRotatef( xrot, 1.0, 0.0, 0.0 );
113
114	draw_surface();
115
116	glPopMatrix();
117
118	glFlush();
119	}
120
121
122	static void InitMaterials(void)
123	{
124	static float ambient[] = {0.1, 0.1, 0.1, 1.0};
125	static float diffuse[] = {0.5, 1.0, 1.0, 1.0};
126	static float position0[] = {0.0, 0.0, 20.0, 0.0};
127	static float position1[] = {0.0, 0.0, -20.0, 0.0};
128	static float front_mat_shininess[] = {60.0};
129	static float front_mat_specular[] = {0.2, 0.2, 0.2, 1.0};
130	static float front_mat_diffuse[] = {0.5, 0.28, 0.38, 1.0};
131	/*
132	static float back_mat_shininess[] = {60.0};
133	static float back_mat_specular[] = {0.5, 0.5, 0.2, 1.0};
134	static float back_mat_diffuse[] = {1.0, 1.0, 0.2, 1.0};
135	*/
136	static float lmodel_ambient[] = {1.0, 1.0, 1.0, 1.0};
137	static float lmodel_twoside[] = {GL_FALSE};
138
139	glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
140	glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);
141	glLightfv(GL_LIGHT0, GL_POSITION, position0);
142	glEnable(GL_LIGHT0);
143
144	glLightfv(GL_LIGHT1, GL_AMBIENT, ambient);
145	glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse);
146	glLightfv(GL_LIGHT1, GL_POSITION, position1);
147	glEnable(GL_LIGHT1);
148
149	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
150	glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
151	glEnable(GL_LIGHTING);
152
153	glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_mat_shininess);
154	glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_mat_specular);
155	glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, front_mat_diffuse);
156	}
157
158
159	static void Init(void)
160	{
161	glClearColor(0.0, 0.0, 0.0, 0.0);
162
163	glShadeModel(GL_SMOOTH);
164	glEnable(GL_DEPTH_TEST);
165
166	InitMaterials();
167
168	glMatrixMode(GL_PROJECTION);
169	glLoadIdentity();
170	glFrustum( -1.0, 1.0, -1.0, 1.0, 5, 25 );
171
172	glMatrixMode(GL_MODELVIEW);
173	glLoadIdentity();
174	glTranslatef( 0.0, 0.0, -6.0 );
175
176	#ifdef GL_EXT_vertex_array
177	if (use_vertex_arrays) {
178	glVertexPointerEXT( 3, GL_FLOAT, 0, numverts, verts );
179	glNormalPointerEXT( GL_FLOAT, 0, numverts, norms );
180	glEnable( GL_VERTEX_ARRAY_EXT );
181	glEnable( GL_NORMAL_ARRAY_EXT );
182	}
183	#endif
184	}
185
186
187	static void Reshape(int width, int height)
188	{
189	glViewport(0, 0, (GLint)width, (GLint)height);
190	}
191
192
193	static GLenum Args(int argc, char **argv)
194	{
195	GLint i;
196
197	for (i = 1; i < argc; i++) {
198	if (strcmp(argv[i], "-sb") == 0) {
199	doubleBuffer = GL_FALSE;
200	}
201	else if (strcmp(argv[i], "-db") == 0) {
202	doubleBuffer = GL_TRUE;
203	}
204	else if (strcmp(argv[i], "-speed") == 0) {
205	speed_test = GL_TRUE;
206	doubleBuffer = GL_TRUE;
207	}
208	else if (strcmp(argv[i], "-va") == 0) {
209	use_vertex_arrays = GL_TRUE;
210	}
211	else {
212	wxString msg("Bad option: ");
213	msg += argv[i];
214	wxMessageBox(msg);
215	return GL_FALSE;
216	}
217	}
218
219	return GL_TRUE;
220	}
221
222	// The following part was written for wxWindows 1.66
223	MyFrame *frame = NULL;
224
225	IMPLEMENT_APP(MyApp)
226
227	// `Main program' equivalent, creating windows and returning main app frame
228	bool MyApp::OnInit(void)
229	{
230	Args(argc, argv);
231
232	// Create the main frame window
233	frame = new MyFrame(NULL, "Isosurf GL Sample", wxPoint(50, 50), wxSize(200, 200));
234
235	// Give it an icon
236	frame->SetIcon(wxIcon("mondrian"));
237
238	// Make a menubar
239	wxMenu *fileMenu = new wxMenu;
240
241	fileMenu->Append(wxID_EXIT, "E&xit");
242	wxMenuBar *menuBar = new wxMenuBar;
243	menuBar->Append(fileMenu, "&File");
244	frame->SetMenuBar(menuBar);
245
246	// Make a TestGLCanvas
247
248	// JACS
249	#ifdef __WXMSW__
250	int *gl_attrib = NULL;
251	#else
252	int gl_attrib[20] = { GLX_RGBA, GLX_RED_SIZE, 1, GLX_GREEN_SIZE, 1,
253	GLX_BLUE_SIZE, 1, GLX_DEPTH_SIZE, 1,
254	GLX_DOUBLEBUFFER, None };
255	#endif
256
257	if(!doubleBuffer
9838df2c	258	#ifdef __WXGTK__ // JACS
c2265822 JS	259	\|\| !wxGLCanvas::HaveVisual(gl_attrib)
	260	#endif
	261	)
	262	{
	263	printf("don't have double buffer, disabling\n");
9838df2c	264	#ifdef __WXGTK__
c2265822 JS	265	gl_attrib[9] = None;
	266	#endif
	267	doubleBuffer = GL_FALSE;
	268	}
	269	frame->m_canvas = new TestGLCanvas(frame, -1, wxPoint(0, 0), wxSize(200, 200), 0, "TestGLCanvas",
	270	gl_attrib);
	271
	272	// Show the frame
	273	frame->Show(TRUE);
	274
	275	frame->m_canvas->SetCurrent();
	276	read_surface( "isosurf.dat" );
	277
	278	Init();
	279
	280	return TRUE;
	281	}
	282
	283	BEGIN_EVENT_TABLE(MyFrame, wxFrame)
	284	EVT_MENU(wxID_EXIT, MyFrame::OnExit)
	285	END_EVENT_TABLE()
	286
	287	// My frame constructor
	288	MyFrame::MyFrame(wxFrame *frame, const wxString& title, const wxPoint& pos,
	289	const wxSize& size, long style):
	290	wxFrame(frame, -1, title, pos, size, style)
	291	{
	292	m_canvas = NULL;
	293	}
	294
	295	// Intercept menu commands
	296	void MyFrame::OnExit(wxCommandEvent& event)
	297	{
	298	Destroy();
	299	}
	300
	301	bool MyFrame::OnClose(void)
	302	{
	303	return TRUE;
	304	}
	305
	306
	307	/*
	308	* TestGLCanvas implementation
	309	*/
	310
	311	BEGIN_EVENT_TABLE(TestGLCanvas, wxGLCanvas)
	312	EVT_SIZE(TestGLCanvas::OnSize)
	313	EVT_PAINT(TestGLCanvas::OnPaint)
	314	EVT_CHAR(TestGLCanvas::OnChar)
	315	EVT_MOUSE_EVENTS(TestGLCanvas::OnMouseEvent)
	316	EVT_ERASE_BACKGROUND(TestGLCanvas::OnEraseBackground)
	317	END_EVENT_TABLE()
	318
	319	TestGLCanvas::TestGLCanvas(wxWindow *parent, wxWindowID id,
	320	const wxPoint& pos, const wxSize& size, long style, const wxString& name, int* gl_attrib):
	321	wxGLCanvas(parent, id, pos, size, style, name, gl_attrib)
	322	{
	323	parent->Show(TRUE);
	324	SetCurrent();
	325	/* Make sure server supports the vertex array extension */
	326	char* extensions = (char *) glGetString( GL_EXTENSIONS );
	327	if (!extensions \|\| !strstr( extensions, "GL_EXT_vertex_array" )) {
	328	use_vertex_arrays = GL_FALSE;
329	}
330	}
331
332
333	TestGLCanvas::~TestGLCanvas(void)
334	{
335	}
336
337	void TestGLCanvas::OnPaint( wxPaintEvent& event )
338	{
339	// This is a dummy, to avoid an endless succession of paint messages.
340	// OnPaint handlers must always create a wxPaintDC.
341	wxPaintDC dc(this);
342
343	draw1();
344	SwapBuffers();
345	}
346
347	void TestGLCanvas::OnSize(wxSizeEvent& event)
348	{
349	SetCurrent();
350	int width, height;
351	GetClientSize(& width, & height);
352	Reshape(width, height);
353	}
354
355	void TestGLCanvas::OnChar(wxKeyEvent& event)
356	{
357	switch(event.KeyCode()) {
358	case WXK_ESCAPE:
359	exit(0);
360	case WXK_LEFT:
361	yrot -= 15.0;
362	break;
363	case WXK_RIGHT:
364	yrot += 15.0;
365	break;
366	case WXK_UP:
367	xrot += 15.0;
368	break;
369	case WXK_DOWN:
370	xrot -= 15.0;
371	break;
372	case 's': case 'S':
373	smooth = !smooth;
374	if (smooth) {
375	glShadeModel(GL_SMOOTH);
376	} else {
377	glShadeModel(GL_FLAT);
378	}
379	break;
380	case 'l': case 'L':
381	lighting = !lighting;
382	if (lighting) {
383	glEnable(GL_LIGHTING);
384	} else {
385	glDisable(GL_LIGHTING);
386	}
387	break;
388	}
389
06ad8636	390	Refresh(FALSE);
c2265822 JS	391	}
	392
	393	void TestGLCanvas::OnMouseEvent(wxMouseEvent& event)
	394	{
	395	static int dragging = 0;
	396	static float last_x, last_y;
	397
	398	//printf("%f %f %d\n", event.GetX(), event.GetY(), (int)event.LeftIsDown());
	399	if(event.LeftIsDown()) {
	400	if(!dragging) {
	401	dragging = 1;
	402	} else {
	403	yrot += (event.GetX() - last_x)*1.0;
	404	xrot += (event.GetY() - last_y)*1.0;
06ad8636	405	Refresh(FALSE);
c2265822 JS	406	}
	407	last_x = event.GetX();
	408	last_y = event.GetY();
	409	} else
	410	dragging = 0;
	411	}
	412
	413	void TestGLCanvas::OnEraseBackground(wxEraseEvent& event)
	414	{
	415	// Do nothing, to avoid flashing.
	416	}
	417