Firstly, I just want to say thanks to all previous replyer for their expertise
help.
Secondly, I need more help from you guys.
Actually, I found the true issues is the glWindow->Redraw() . it doesn't
force refreshing. It only refresh sometime(like when mouse moving around). It
only refresh on Window.
I try the code below. It refresh on windows. but doesn't on MacOSX( I had move
my mouse to let them refresh.)
Actually, I really fltk to refresh whenever I do Redraw(),or if there are
alternative way which can make me force fltk to refresh.
Thanks first.
/////////////////////////////
#include <FL/Fl.H>
#include <FL/Fl_Gl_Window.H>
#include <FL/gl.h>
#include <memory.h>
//
// Simple resizable 2D GL window
// erco 10/08/05
//
class MyGlWindow : public Fl_Gl_Window {
// DRAW METHOD
// OpenGL window: (w,h) is upper right, (-w,-h) is lower left, (0,0)
is center
//
public:
char* m_pFrameData;
void draw() {
static int cc=0;
if(cc>w())
cc=0;
// First time? init viewport, etc.
if (!valid()) {
valid(1);
glLoadIdentity();
glViewport(0,0,w(),h());
glOrtho(-w(),w(),-h(),h(),-1,1);
}
// Clear screen
glClear(GL_COLOR_BUFFER_BIT);
// Draw white 'X'
glColor3f(1.0, 1.0, 1.0);
glBegin(GL_LINE_STRIP); glVertex2f(w()-cc, h());
glVertex2f(-w()-cc,-h()); glEnd();
glBegin(GL_LINE_STRIP); glVertex2f(w()-cc,-h()); glVertex2f(-w()-cc,
h()); glEnd();
Fl_Gl_Window::draw(); // Aha!
}
// HANDLE WINDOW RESIZING
// If window reshaped, need to readjust viewport/ortho
//
void resize(int X,int Y,int W,int H) {
Fl_Gl_Window::resize(X,Y,W,H);
glLoadIdentity();
glViewport(0,0,W,H);
glOrtho(-W,W,-H,H,-1,1);
redraw();
}
public:
// CONSTRUCTOR
MyGlWindow(int X,int Y,int W,int H,const char*L=0) :
Fl_Gl_Window(X,Y,W,H,L) {
m_pFrameData=new char[1024*1024*3];
}
};
// MAIN
int main() {
Fl_Window win(512, 512);
MyGlWindow mygl(0, 0, win.w(), win.h(),"viewer");
win.resizable(mygl);
win.show();
while(1)
{
// memset(mygl.m_pFrameData,cc++,m_nWidth*m_nHeight*3);
mygl.redraw();
Fl::wait();
}
return(Fl::run());
}
_______________________________________________
fltk-opengl mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk-opengl
