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Diffstat (limited to 'progs/beos/demo.cpp')
-rw-r--r-- | progs/beos/demo.cpp | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/progs/beos/demo.cpp b/progs/beos/demo.cpp new file mode 100644 index 00000000000..42f316a71f1 --- /dev/null +++ b/progs/beos/demo.cpp @@ -0,0 +1,147 @@ +// $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; +} |