#include <config.h>
+#include <math.h>
#include <gtk/gtk.h>
#include <gtk/gtkgl.h>
#include <GL/gl.h>
+#include <GL/glu.h>
static gboolean expose_start(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
{
+ g_message("opengl:expose_start");
GdkGLContext *glcontext = gtk_widget_get_gl_context(da);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(da);
/* draw in here */
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
- return TRUE;
+ return FALSE;
}
/* Plugins run stuff here */
static gboolean expose_end(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
{
+ g_message("opengl:expose_end");
+
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(da);
if (gdk_gl_drawable_is_double_buffered(gldrawable))
return FALSE;
}
-static gboolean configure(GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
+static gboolean configure_start(GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
{
- GdkGLContext *glcontext = gtk_widget_get_gl_context(da);
+ GdkGLContext *glcontext = gtk_widget_get_gl_context(da);
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(da);
if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
g_assert_not_reached();
- glLoadIdentity();
- glViewport(0, 0, da->allocation.width, da->allocation.height);
- glOrtho(-10,10,-10,10,-20050,10000);
+
+ double width = da->allocation.width;
+ double height = da->allocation.height;
+ double dist = 500*1000; // 500 km
+ glViewport(0, 0, width, height);
+
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
- glScalef(10., 10., 10.);
-
- gdk_gl_drawable_gl_end(gldrawable);
+ glMatrixMode(GL_PROJECTION);
+ glLoadIdentity();
+ double rad = atan(height/2*1000.0/dist); // 1px = 1000 meters
+ double deg = (rad*180)/M_PI;
+ gluPerspective(deg*2, width/height, 0.1f, 10000000.0f);
+
+ glMatrixMode(GL_MODELVIEW);
+ glLoadIdentity();
+ glTranslatef(0.0, 0.0, -dist);
+ glRotatef(-45, 1, 0, 0);
return FALSE;
}
+static gboolean configure_end(GtkWidget *da, GdkEventConfigure *event, gpointer user_data)
+{
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(da);
+ gdk_gl_drawable_gl_end(gldrawable);
+ return FALSE;
+}
gboolean opengl_init(GtkDrawingArea *drawing, GtkNotebook *config)
{
/* Set up OpenGL Stuff */
- g_signal_connect(drawing, "configure-event", G_CALLBACK(configure), NULL);
-
- //g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
- g_signal_connect (drawing, "expose-event", G_CALLBACK(expose_start), NULL);
- g_signal_connect_after(drawing, "expose-event", G_CALLBACK(expose_end), NULL);
+ g_signal_connect (drawing, "configure-event", G_CALLBACK(configure_start), NULL);
+ g_signal_connect_after(drawing, "configure-event", G_CALLBACK(configure_end), NULL);
+ g_signal_connect (drawing, "expose-event", G_CALLBACK(expose_start), NULL);
+ g_signal_connect_after(drawing, "expose-event", G_CALLBACK(expose_end), NULL);
return TRUE;
}