int main(int argc, char **argv)
{
cg_onscreen_t *onscreen;
cg_error_t *error = NULL;
struct demo demo;
float fovy, aspect, z_near, z_2d, z_far;
uv_loop_t *loop = uv_default_loop();
demo.dev = cg_device_new ();
if (!demo.dev || error != NULL)
c_error("Failed to create Cogl context\n");
onscreen = cg_onscreen_new(demo.dev, WIDTH, HEIGHT);
demo.fb = onscreen;
demo.width = cg_framebuffer_get_width(demo.fb);
demo.height = cg_framebuffer_get_height(demo.fb);
cg_onscreen_show(onscreen);
cg_framebuffer_set_viewport(demo.fb, 0, 0, demo.width, demo.height);
fovy = 45;
aspect = (float)demo.width / (float)demo.height;
z_near = 0.1;
z_2d = 1000;
z_far = 2000;
cg_framebuffer_perspective(demo.fb, fovy, aspect, z_near, z_far);
c_matrix_init_identity(&demo.view);
c_matrix_view_2d_in_perspective(&demo.view, fovy, aspect, z_near, z_2d,
demo.width, demo.height);
cg_framebuffer_set_modelview_matrix(demo.fb, &demo.view);
demo.swap_ready = true;
cg_onscreen_add_frame_callback(demo.fb, frame_event_cb, &demo, NULL);
init_particle_emitters(&demo);
demo.timer = c_timer_new();
demo.spin_rate = 0;
demo.angle_between_emitters = 2 * M_PI / C_N_ELEMENTS(demo.emitter);
uv_idle_init(loop, &demo.idle);
demo.idle.data = &demo;
uv_idle_start(&demo.idle, paint_cb);
cg_uv_set_mainloop(demo.dev, loop);
uv_run(loop, UV_RUN_DEFAULT);
return 0;
}
static void
setup_orthographic_modelview (void)
{
c_matrix_t matrix;
int fb_width = cg_framebuffer_get_width (test_fb);
int fb_height = cg_framebuffer_get_height (test_fb);
/* Set up a non-identity modelview matrix. When the journal is
* flushed it will usually flush the identity matrix. Using the
* non-default matrix ensures that we test that Cogl restores the
* matrix we asked for. The matrix sets up an orthographic transform
* in the modelview matrix */
c_matrix_init_identity (&matrix);
c_matrix_orthographic (&matrix,
0.0f, 0.0f, /* x_1 y_1 */
fb_width,
fb_height,
-1.0f, /* nearval */
1.0f /* farval */);
cg_framebuffer_set_modelview_matrix (test_fb, &matrix);
}
