cb71207424
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11148 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
444 lines
9.5 KiB
C++
444 lines
9.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// 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
|
|
|
|
#if !wxUSE_GLCANVAS
|
|
#error Please set wxUSE_GLCANVAS to 1 in setup.h.
|
|
#endif
|
|
|
|
#include "wx/timer.h"
|
|
#include "wx/glcanvas.h"
|
|
|
|
#ifdef __WXMAC__
|
|
# 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 "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] = { 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,
|
|
# ifdef __WXMAC__
|
|
GL_NONE };
|
|
# else
|
|
None };
|
|
# endif
|
|
#endif
|
|
|
|
if(!doubleBuffer)
|
|
{
|
|
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();
|
|
}
|
|
|
|
/*
|
|
* 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);
|
|
|
|
#ifndef __WXMOTIF__
|
|
if (!GetContext()) return;
|
|
#endif
|
|
|
|
SetCurrent();
|
|
|
|
draw1();
|
|
SwapBuffers();
|
|
}
|
|
|
|
void TestGLCanvas::OnSize(wxSizeEvent& event)
|
|
{
|
|
#ifndef __WXMOTIF__
|
|
if (!GetContext()) return;
|
|
#endif
|
|
|
|
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;
|
|
default:
|
|
{
|
|
event.Skip();
|
|
return;
|
|
}
|
|
}
|
|
|
|
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.
|
|
}
|
|
|