#include <config.h>
#include <math.h>
+#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>
#include <gtk/gtkgl.h>
#include <GL/glu.h>
#include "gis-opengl.h"
+#include "gis-util.h"
+#include "gis-object.h"
#include "roam.h"
#define FOV_DIST 2000.0
#define MPPX(dist) (4*dist/FOV_DIST)
// #define ROAM_DEBUG
+/******************
+ * Object drawing *
+ ******************/
+static void _gis_opengl_draw_triangle(GisOpenGL *self, GisTriangle *tri)
+{
+}
+
+static void _gis_opengl_draw_quad(GisOpenGL *self, GisQuad *quad)
+{
+}
+
+static void _gis_opengl_draw_callback(GisOpenGL *self, GisCallback *cb)
+{
+}
+
+static void _gis_opengl_draw_marker(GisOpenGL *self, GisMarker *marker)
+{
+ GisProjection *proj = (GisProjection*)self->sphere->view;
+ GisPoint *point = gis_object_center(marker);
+ gis_point_project(point, proj);
+
+ double width = GTK_WIDGET(self)->allocation.width;
+ double height = GTK_WIDGET(self)->allocation.height;
+
+ cairo_set_source_rgba(self->canvas, 1, 1, 1, 1);
+ cairo_arc(self->canvas, point->px, height-point->py, 4, 0, 2*G_PI);
+ cairo_fill(self->canvas);
+ cairo_move_to(self->canvas, point->px+4, height-point->py-8);
+ cairo_set_font_size(self->canvas, 10);
+ cairo_show_text(self->canvas, marker->label);
+}
+
+static void gis_opengl_draw_object(GisOpenGL *self, GisObject *object)
+{
+ g_debug("GisOpenGL: draw_object - Drawing object of type %d", object->type);
+ switch (object->type) {
+ case GIS_TYPE_TRIANGLE: _gis_opengl_draw_triangle(self, GIS_TRIANGLE(object)); break;
+ case GIS_TYPE_QUAD : _gis_opengl_draw_quad (self, GIS_QUAD (object)); break;
+ case GIS_TYPE_CALLBACK: _gis_opengl_draw_callback(self, GIS_CALLBACK(object)); break;
+ case GIS_TYPE_MARKER : _gis_opengl_draw_marker (self, GIS_MARKER (object)); break;
+ default: g_warning("GisOpenGL: draw_object - invalid type %d", object->type);
+ }
+}
+static void gis_opengl_draw_objects(GisOpenGL *self)
+{
+ g_debug("GisOpenGL: draw_objects");
+
+ double width = GTK_WIDGET(self)->allocation.width;
+ double height = GTK_WIDGET(self)->allocation.height;
+ cairo_surface_t *surface = cairo_get_target(self->canvas);
+ int stride = cairo_image_surface_get_stride(surface);
+ guchar *data = cairo_image_surface_get_data(surface);
+ memset(data, 0, height*stride);
+
+ /* Draw objects */
+ for (GList *cur = GIS_VIEWER(self)->objects; cur; cur = cur->next)
+ gis_opengl_draw_object(self, cur->data);
+
+ /* Copy canvas to opengl */
+ glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
+ glMatrixMode(GL_MODELVIEW); glPushMatrix(); glLoadIdentity();
+ glDisable(GL_CULL_FACE);
+ glDisable(GL_DEPTH_TEST);
+ glDisable(GL_LIGHTING);
+ glDisable(GL_COLOR_MATERIAL);
+ glEnable(GL_TEXTURE_2D);
+ glBindTexture(GL_TEXTURE_2D, self->canvas_tex);
+ //glTexSubImage2D(GL_TEXTURE_2D, 0, 0,0, width,height,
+ // GL_RGBA, GL_UNSIGNED_BYTE, data);
+ glBegin(GL_QUADS);
+ glTexCoord2d(0, 0); glVertex3f(-1, 1, 1);
+ glTexCoord2d(1, 0); glVertex3f( 1, 1, 1);
+ glTexCoord2d(1, 1); glVertex3f( 1, -1, 1);
+ glTexCoord2d(0, 1); glVertex3f(-1, -1, 1);
+ glEnd();
+ glMatrixMode(GL_PROJECTION); glPopMatrix();
+ glMatrixMode(GL_MODELVIEW); glPopMatrix();
+}
+
+
+/***********
+ * Helpers *
+ ***********/
+static void _gis_opengl_begin(GisOpenGL *self)
+{
+ g_assert(GIS_IS_OPENGL(self));
+
+ GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self));
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
+
+ if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
+ g_assert_not_reached();
+}
+
+static void _gis_opengl_end(GisOpenGL *self)
+{
+ g_assert(GIS_IS_OPENGL(self));
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
+ gdk_gl_drawable_gl_end(gldrawable);
+}
/*************
* ROAM Code *
*************/
-static void set_visuals(GisOpenGL *self)
+static void _set_visuals(GisOpenGL *self)
{
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
/* Camera 1 */
double lat, lon, elev, rx, ry, rz;
- gis_view_get_location(self->view, &lat, &lon, &elev);
- gis_view_get_rotation(self->view, &rx, &ry, &rz);
+ gis_viewer_get_location(GIS_VIEWER(self), &lat, &lon, &elev);
+ gis_viewer_get_rotation(GIS_VIEWER(self), &rx, &ry, &rz);
glRotatef(rx, 1, 0, 0);
glRotatef(rz, 0, 0, 1);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
//glShadeModel(GL_FLAT);
+
+ roam_sphere_update_view(self->sphere);
}
static void on_realize(GisOpenGL *self, gpointer _)
{
g_debug("GisOpenGL: on_realize");
- set_visuals(self);
+ _set_visuals(self);
roam_sphere_update_errors(self->sphere);
}
static gboolean on_configure(GisOpenGL *self, GdkEventConfigure *event, gpointer _)
{
g_debug("GisOpenGL: on_configure");
- gis_opengl_begin(self);
+ _gis_opengl_begin(self);
double width = GTK_WIDGET(self)->allocation.width;
double height = GTK_WIDGET(self)->allocation.height;
- glViewport(0, 0, width, height);
+ /* Setup OpenGL Window */
+ glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
double ang = atan(height/FOV_DIST);
gluPerspective(rad2deg(ang)*2, width/height, 1, 20*EARTH_R);
+ /* Recreate the canvas */
+ if (self->canvas) {
+ cairo_surface_destroy(cairo_get_target(self->canvas));
+ cairo_destroy(self->canvas);
+ glDeleteTextures(1, &self->canvas_tex);
+ }
+ g_message("creating %fx%f canvas", width, height);
+ cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
+ self->canvas = cairo_create(surface);
+ glEnable(GL_TEXTURE_2D);
+ glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
+ glPixelStorei(GL_PACK_ALIGNMENT, 1);
+ glGenTextures(1, &self->canvas_tex);
+ glBindTexture(GL_TEXTURE_2D, self->canvas_tex);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
+ cairo_image_surface_get_data(cairo_get_target(self->canvas)));
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+ glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+
+
#ifndef ROAM_DEBUG
roam_sphere_update_errors(self->sphere);
#endif
- gis_opengl_end(self);
+ _gis_opengl_end(self);
return FALSE;
}
-static void on_expose_plugin(GisPlugin *plugin, gchar *name, GisOpenGL *self)
+static void _on_expose_plugin(GisPlugin *plugin, gchar *name, GisOpenGL *self)
{
- set_visuals(self);
+ _set_visuals(self);
glMatrixMode(GL_PROJECTION); glPushMatrix();
glMatrixMode(GL_MODELVIEW); glPushMatrix();
gis_plugin_expose(plugin);
static gboolean on_expose(GisOpenGL *self, GdkEventExpose *event, gpointer _)
{
g_debug("GisOpenGL: on_expose - begin");
- gis_opengl_begin(self);
+ _gis_opengl_begin(self);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
#ifndef ROAM_DEBUG
- gis_plugins_foreach(self->plugins, G_CALLBACK(on_expose_plugin), self);
-
+ gis_plugins_foreach(GIS_VIEWER(self)->plugins,
+ G_CALLBACK(_on_expose_plugin), self);
+ gis_opengl_draw_objects(self);
if (self->wireframe) {
- set_visuals(self);
+ _set_visuals(self);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
roam_sphere_draw(self->sphere);
}
#else
- set_visuals(self);
+ _set_visuals(self);
glColor4f(0.0, 0.0, 9.0, 0.6);
glDisable(GL_TEXTURE_2D);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
roam_sphere_draw(self->sphere);
-
//roam_sphere_draw_normals(self->sphere);
#endif
- set_visuals(self);
- gis_opengl_end(self);
- gis_opengl_flush(self);
+ GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
+ gdk_gl_drawable_swap_buffers(gldrawable);
+
+ _gis_opengl_end(self);
g_debug("GisOpenGL: on_expose - end\n");
return FALSE;
}
-static gboolean on_button_press(GisOpenGL *self, GdkEventButton *event, gpointer _)
-{
- g_debug("GisOpenGL: on_button_press - Grabbing focus");
- gtk_widget_grab_focus(GTK_WIDGET(self));
- return TRUE;
-}
-
static gboolean on_key_press(GisOpenGL *self, GdkEventKey *event, gpointer _)
{
g_debug("GisOpenGL: on_key_press - key=%x, state=%x, plus=%x",
event->keyval, event->state, GDK_plus);
- double lat, lon, elev, pan;
- gis_view_get_location(self->view, &lat, &lon, &elev);
- pan = MIN(elev/(EARTH_R/2), 30);
guint kv = event->keyval;
gdk_threads_leave();
- if (kv == GDK_Left || kv == GDK_h) gis_view_pan(self->view, 0, -pan, 0);
- else if (kv == GDK_Down || kv == GDK_j) gis_view_pan(self->view, -pan, 0, 0);
- else if (kv == GDK_Up || kv == GDK_k) gis_view_pan(self->view, pan, 0, 0);
- else if (kv == GDK_Right || kv == GDK_l) gis_view_pan(self->view, 0, pan, 0);
- else if (kv == GDK_minus || kv == GDK_o) gis_view_zoom(self->view, 10./9);
- else if (kv == GDK_plus || kv == GDK_i) gis_view_zoom(self->view, 9./10);
- else if (kv == GDK_H) gis_view_rotate(self->view, 0, 0, -2);
- else if (kv == GDK_J) gis_view_rotate(self->view, 2, 0, 0);
- else if (kv == GDK_K) gis_view_rotate(self->view, -2, 0, 0);
- else if (kv == GDK_L) gis_view_rotate(self->view, 0, 0, 2);
-
/* Testing */
- else if (kv == GDK_w) {self->wireframe = !self->wireframe; gtk_widget_queue_draw(GTK_WIDGET(self));}
+ if (kv == GDK_w) {
+ self->wireframe = !self->wireframe;
+ gtk_widget_queue_draw(GTK_WIDGET(self));
+ }
#ifdef ROAM_DEBUG
else if (kv == GDK_n) roam_sphere_split_one(self->sphere);
else if (kv == GDK_p) roam_sphere_merge_one(self->sphere);
#else
gdk_threads_enter();
#endif
-
- return TRUE;
+ return FALSE;
}
static gboolean _update_errors_cb(gpointer sphere)
roam_sphere_update_errors(sphere);
return FALSE;
}
-static void on_view_changed(GisView *view,
- gdouble _1, gdouble _2, gdouble _3, GisOpenGL *self)
+static void on_view_changed(GisOpenGL *self,
+ gdouble _1, gdouble _2, gdouble _3)
{
g_debug("GisOpenGL: on_view_changed");
gdk_threads_enter();
- gis_opengl_begin(self);
- set_visuals(self);
+ _gis_opengl_begin(self);
+ _set_visuals(self);
#ifndef ROAM_DEBUG
g_idle_add_full(G_PRIORITY_HIGH_IDLE+30, _update_errors_cb, self->sphere, NULL);
//roam_sphere_update_errors(self->sphere);
#endif
- gis_opengl_redraw(self);
- gis_opengl_end(self);
+ _gis_opengl_end(self);
gdk_threads_leave();
}
{
//g_debug("GisOpenGL: on_idle");
gdk_threads_enter();
- gis_opengl_begin(self);
+ _gis_opengl_begin(self);
if (roam_sphere_split_merge(self->sphere))
- gis_opengl_redraw(self);
- gis_opengl_end(self);
+ gtk_widget_queue_draw(GTK_WIDGET(self));
+ _gis_opengl_end(self);
gdk_threads_leave();
return TRUE;
}
-/***********
- * Methods *
- ***********/
-GisOpenGL *gis_opengl_new(GisWorld *world, GisView *view, GisPlugins *plugins)
+/*********************
+ * GisViewer methods *
+ *********************/
+GisViewer *gis_opengl_new(GisPlugins *plugins)
{
g_debug("GisOpenGL: new");
- GisOpenGL *self = g_object_new(GIS_TYPE_OPENGL, NULL);
- self->world = world;
- self->view = view;
+ GisViewer *self = g_object_new(GIS_TYPE_OPENGL, NULL);
self->plugins = plugins;
- g_object_ref(world);
- g_object_ref(view);
-
- g_signal_connect(self->view, "location-changed", G_CALLBACK(on_view_changed), self);
- g_signal_connect(self->view, "rotation-changed", G_CALLBACK(on_view_changed), self);
-
- self->sphere = roam_sphere_new(self);
-
- return g_object_ref(self);
+ return self;
}
-void gis_opengl_center_position(GisOpenGL *self, gdouble lat, gdouble lon, gdouble elev)
+static void gis_opengl_center_position(GisViewer *_self, gdouble lat, gdouble lon, gdouble elev)
{
+ GisOpenGL *self = GIS_OPENGL(_self);
glRotatef(lon, 0, 1, 0);
glRotatef(-lat, 1, 0, 0);
glTranslatef(0, 0, elev2rad(elev));
}
-void gis_opengl_render_tile(GisOpenGL *self, GisTile *tile)
+static void gis_opengl_project(GisViewer *_self,
+ gdouble lat, gdouble lon, gdouble elev,
+ gdouble *px, gdouble *py, gdouble *pz)
+{
+ GisOpenGL *self = GIS_OPENGL(_self);
+ gdouble x, y, z;
+ lle2xyz(lat, lon, elev, &x, &y, &z);
+ gluProject(x, y, z,
+ self->sphere->view->model,
+ self->sphere->view->proj,
+ self->sphere->view->view,
+ px, py, pz);
+}
+
+static void gis_opengl_render_tile(GisViewer *_self, GisTile *tile)
{
+ GisOpenGL *self = GIS_OPENGL(_self);
if (!tile || !tile->data)
return;
GList *triangles = roam_sphere_get_intersect(self->sphere,
g_list_free(triangles);
}
-void gis_opengl_render_tiles(GisOpenGL *opengl, GisTile *tile)
+static void gis_opengl_render_tiles(GisViewer *_self, GisTile *tile)
{
+ GisOpenGL *self = GIS_OPENGL(_self);
/* Only render children if possible */
gboolean has_children = TRUE;
GisTile *child;
if (has_children)
/* Only render children */
gis_tile_foreach(tile, child)
- gis_opengl_render_tiles(opengl, child);
+ gis_opengl_render_tiles(_self, child);
else
/* No children, render this tile */
- gis_opengl_render_tile(opengl, tile);
+ gis_opengl_render_tile(_self, tile);
}
-void gis_opengl_set_height_func(GisOpenGL *self, GisTile *tile,
+static void gis_opengl_set_height_func(GisViewer *_self, GisTile *tile,
RoamHeightFunc height_func, gpointer user_data, gboolean update)
{
+ GisOpenGL *self = GIS_OPENGL(_self);
if (!tile)
return;
/* TODO: get points? */
_gis_opengl_clear_height_func_rec(root->kids[0]);
_gis_opengl_clear_height_func_rec(root->kids[1]);
}
-void gis_opengl_clear_height_func(GisOpenGL *self)
+
+static void gis_opengl_clear_height_func(GisViewer *_self)
{
+ GisOpenGL *self = GIS_OPENGL(_self);
for (int i = 0; i < G_N_ELEMENTS(self->sphere->roots); i++)
_gis_opengl_clear_height_func_rec(self->sphere->roots[i]);
}
-void gis_opengl_redraw(GisOpenGL *self)
+static void gis_opengl_begin(GisViewer *_self)
{
- g_debug("GisOpenGL: redraw");
- gtk_widget_queue_draw(GTK_WIDGET(self));
+ g_assert(GIS_IS_OPENGL(_self));
+ _gis_opengl_begin(GIS_OPENGL(_self));
}
-void gis_opengl_begin(GisOpenGL *self)
-{
- g_assert(GIS_IS_OPENGL(self));
-
- GdkGLContext *glcontext = gtk_widget_get_gl_context(GTK_WIDGET(self));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
- if (!gdk_gl_drawable_gl_begin(gldrawable, glcontext))
- g_assert_not_reached();
-}
-void gis_opengl_end(GisOpenGL *self)
+static void gis_opengl_end(GisViewer *_self)
{
- g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
- gdk_gl_drawable_gl_end(gldrawable);
- gdk_threads_leave();
+ g_assert(GIS_IS_OPENGL(_self));
+ _gis_opengl_end(GIS_OPENGL(_self));
}
-void gis_opengl_flush(GisOpenGL *self)
-{
- g_assert(GIS_IS_OPENGL(self));
- GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable(GTK_WIDGET(self));
- if (gdk_gl_drawable_is_double_buffered(gldrawable))
- gdk_gl_drawable_swap_buffers(gldrawable);
- else
- glFlush();
- gdk_gl_drawable_gl_end(gldrawable);
-}
-
/****************
* GObject code *
****************/
-G_DEFINE_TYPE(GisOpenGL, gis_opengl, GTK_TYPE_DRAWING_AREA);
+G_DEFINE_TYPE(GisOpenGL, gis_opengl, GIS_TYPE_VIEWER);
static void gis_opengl_init(GisOpenGL *self)
{
g_debug("GisOpenGL: init");
GDK_KEY_PRESS_MASK);
g_object_set(self, "can-focus", TRUE, NULL);
+ self->sphere = roam_sphere_new(self);
+
#ifndef ROAM_DEBUG
- self->sm_source = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL);
+ self->sm_source[0] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+30, 33, (GSourceFunc)on_idle, self, NULL);
+ self->sm_source[1] = g_timeout_add_full(G_PRIORITY_HIGH_IDLE+10, 500, (GSourceFunc)on_idle, self, NULL);
#endif
- g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL);
- g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL);
- g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL);
+ g_signal_connect(self, "realize", G_CALLBACK(on_realize), NULL);
+ g_signal_connect(self, "configure-event", G_CALLBACK(on_configure), NULL);
+ g_signal_connect(self, "expose-event", G_CALLBACK(on_expose), NULL);
- g_signal_connect(self, "button-press-event", G_CALLBACK(on_button_press), NULL);
- g_signal_connect(self, "enter-notify-event", G_CALLBACK(on_button_press), NULL);
- g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
-}
-static GObject *gis_opengl_constructor(GType gtype, guint n_properties,
- GObjectConstructParam *properties)
-{
- g_debug("GisOpengl: constructor");
- GObjectClass *parent_class = G_OBJECT_CLASS(gis_opengl_parent_class);
- return parent_class->constructor(gtype, n_properties, properties);
+ g_signal_connect(self, "key-press-event", G_CALLBACK(on_key_press), NULL);
+
+ g_signal_connect(self, "location-changed", G_CALLBACK(on_view_changed), NULL);
+ g_signal_connect(self, "rotation-changed", G_CALLBACK(on_view_changed), NULL);
}
static void gis_opengl_dispose(GObject *_self)
{
g_debug("GisOpenGL: dispose");
GisOpenGL *self = GIS_OPENGL(_self);
- if (self->sm_source) {
- g_source_remove(self->sm_source);
- self->sm_source = 0;
+ if (self->sm_source[0]) {
+ g_source_remove(self->sm_source[0]);
+ self->sm_source[0] = 0;
+ }
+ if (self->sm_source[1]) {
+ g_source_remove(self->sm_source[1]);
+ self->sm_source[1] = 0;
}
if (self->sphere) {
roam_sphere_free(self->sphere);
self->sphere = NULL;
}
- if (self->world) {
- g_object_unref(self->world);
- self->world = NULL;
- }
- if (self->view) {
- g_object_unref(self->view);
- self->view = NULL;
- }
G_OBJECT_CLASS(gis_opengl_parent_class)->dispose(_self);
}
static void gis_opengl_finalize(GObject *_self)
{
- g_debug("GisOpenGL: finalize");
+ g_debug("GisViewer: finalize");
GisOpenGL *self = GIS_OPENGL(_self);
+ if (self->canvas) {
+ cairo_surface_destroy(cairo_get_target(self->canvas));
+ cairo_destroy(self->canvas);
+ self->canvas = NULL;
+ }
G_OBJECT_CLASS(gis_opengl_parent_class)->finalize(_self);
}
static void gis_opengl_class_init(GisOpenGLClass *klass)
{
g_debug("GisOpenGL: class_init");
GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
- gobject_class->constructor = gis_opengl_constructor;
- gobject_class->dispose = gis_opengl_dispose;
- gobject_class->finalize = gis_opengl_finalize;
+ gobject_class->dispose = gis_opengl_dispose;
+
+ GisViewerClass *viewer_class = GIS_VIEWER_CLASS(klass);
+ viewer_class->center_position = gis_opengl_center_position;
+ viewer_class->project = gis_opengl_project;
+ viewer_class->clear_height_func = gis_opengl_clear_height_func;
+ viewer_class->set_height_func = gis_opengl_set_height_func;
+ viewer_class->render_tile = gis_opengl_render_tile;
+ viewer_class->render_tiles = gis_opengl_render_tiles;
+ viewer_class->begin = gis_opengl_begin;
+ viewer_class->end = gis_opengl_end;
}