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-rw-r--r--progs/beos/demo.cpp147
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diff --git a/progs/beos/demo.cpp b/progs/beos/demo.cpp
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+// $Id: demo.cpp,v 1.2 2004-08-14 09:59:16 phoudoin Exp $
+
+// Simple BeOS GLView demo
+// Written by Brian Paul
+// Changes by Philippe Houdoin
+// This file is in the public domain.
+
+
+
+#include <stdio.h>
+#include <Application.h>
+#include <Window.h>
+#include <GLView.h>
+
+class MyGL : public BGLView
+{
+public:
+ MyGL(BRect rect, char *name, ulong options);
+
+ virtual void AttachedToWindow();
+ virtual void Pulse();
+ virtual void FrameResized(float w, float h);
+
+private:
+ void Render();
+ void Reshape(float w, float h);
+ float mAngle;
+};
+
+
+class MyWindow : public BWindow
+{
+public:
+ MyWindow(BRect frame);
+ virtual bool QuitRequested();
+};
+
+
+MyWindow::MyWindow(BRect frame)
+ : BWindow(frame, "demo", B_TITLED_WINDOW, B_NOT_ZOOMABLE)
+{
+ // Make OpenGL view and put it in the window
+ BRect r = Bounds();
+ r.InsetBy(5, 5);
+
+ MyGL *gl = new MyGL(r, "GL", BGL_RGB | BGL_DOUBLE);
+ AddChild(gl);
+ SetPulseRate(1000000 / 30);
+}
+
+bool MyWindow::QuitRequested()
+{
+ be_app->PostMessage(B_QUIT_REQUESTED);
+ return true;
+}
+
+
+
+MyGL::MyGL(BRect rect, char *name, ulong options)
+ : BGLView(rect, name, B_FOLLOW_ALL_SIDES, B_PULSE_NEEDED, options)
+{
+ mAngle = 0.0;
+}
+
+
+void MyGL::AttachedToWindow()
+{
+ BGLView::AttachedToWindow();
+
+ LockGL();
+ glClearColor(0.7, 0.7, 0, 0);
+ Reshape(Bounds().Width(), Bounds().Height());
+ UnlockGL();
+}
+
+
+void MyGL::FrameResized(float w, float h)
+{
+ BGLView::FrameResized(w, h);
+
+ LockGL();
+ Reshape(w, h);
+ UnlockGL();
+
+ Render();
+}
+
+
+void MyGL::Pulse()
+{
+ mAngle += 1.0;
+ Render();
+}
+
+
+void MyGL::Render()
+{
+ LockGL();
+
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ glPushMatrix();
+
+ glRotated(mAngle, 0, 0, 1);
+ glColor3f(0, 0, 1);
+
+ glBegin(GL_POLYGON);
+ glVertex2f(-1, -1);
+ glVertex2f( 1, -1);
+ glVertex2f( 1, 1);
+ glVertex2f(-1, 1);
+ glEnd();
+
+ glPopMatrix();
+
+ SwapBuffers();
+
+ UnlockGL();
+}
+
+
+void MyGL::Reshape(float w, float h)
+{
+ glViewport(0, 0, (int) (w + 1), (int) (h + 1));
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ glFrustum(-1, 1, -1, 1, 10, 30);
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0, 0, -18);
+}
+
+
+int main(int argc, char *argv[])
+{
+ BApplication *app = new BApplication("application/demo");
+
+ // make top-level window
+ MyWindow *win = new MyWindow(BRect(100, 100, 500, 500));
+ win->Show();
+
+ app->Run();
+
+ delete app;
+
+ return 0;
+}